diff --git a/.vscode/launch.json b/.vscode/launch.json
index c292221..22348e2 100644
--- a/.vscode/launch.json
+++ b/.vscode/launch.json
@@ -19,16 +19,13 @@
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
- "miDebuggerPath": "/usr/bin/arm-none-eabi-gdb",
+ "miDebuggerPath": "/usr/local/bin/arm-none-eabi-gdb",
"debugServerPath": "openocd",
"debugServerArgs": "-f /usr/local/share/openocd/scripts/interface/stlink.cfg -f /usr/local/share/openocd/scripts/target/stm32g0x.cfg",
"serverLaunchTimeout": 20000,
"filterStderr": true,
"filterStdout": false,
"serverStarted": "Info : Listening on port 3333 for gdb connections",
- // "sourceFileMap": {
- // "/work/":"${workspaceFolder}"
- // },
"sourceFileMap": {
"${workspaceRoot}":"${workspaceFolder}"
},
diff --git a/Core/Inc/stm32g0xx_hal_conf.h b/Core/Inc/stm32g0xx_hal_conf.h
index 486c99a..36af324 100644
--- a/Core/Inc/stm32g0xx_hal_conf.h
+++ b/Core/Inc/stm32g0xx_hal_conf.h
@@ -42,9 +42,9 @@ extern "C" {
/* #define HAL_EXTI_MODULE_ENABLED */
/* #define HAL_FDCAN_MODULE_ENABLED */
/* #define HAL_HCD_MODULE_ENABLED */
-/* #define HAL_I2C_MODULE_ENABLED */
+#define HAL_I2C_MODULE_ENABLED
/* #define HAL_I2S_MODULE_ENABLED */
-#define HAL_IWDG_MODULE_ENABLED
+/* #define HAL_IWDG_MODULE_ENABLED */
/* #define HAL_IRDA_MODULE_ENABLED */
/* #define HAL_LPTIM_MODULE_ENABLED */
/* #define HAL_PCD_MODULE_ENABLED */
diff --git a/Core/Src/main.c b/Core/Src/main.c
index c7fa85d..084b369 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -5,13 +5,14 @@
#include "main.h"
-IWDG_HandleTypeDef hiwdg;
UART_HandleTypeDef huart2;
+I2C_HandleTypeDef hi2c1;
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART2_UART_Init(void);
-static void MX_IWDG_Init(void);
+static void MX_I2C1_Init(void);
+
#ifdef __GNUC__
#define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
@@ -28,33 +29,24 @@ PUTCHAR_PROTOTYPE
int main(void)
{
- unsigned int i = 1, j = 40;
-
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
MX_USART2_UART_Init();
- MX_IWDG_Init();
+ MX_I2C1_Init();
- while (1) {
- if (j < 100) {
- j += 10;
+ printf("\r\nStarting I2C Scanning:\r\n");
+ for(uint8_t i = 1; i < 128; i++) {
+ uint8_t ret = HAL_I2C_IsDeviceReady(&hi2c1, (uint16_t)(i<<1), 3, 5);
+ if (ret != HAL_OK) { /* No ACK Received At That Address */
+ printf(" - ");
+ } else if(ret == HAL_OK) {
+ printf("0x%X", i);
}
- else if (j < 200) {
- j += 20;
- }
- else if (j < 400) {
- j += 40;
- }
- if (j > 800) {
- j = 800;
- }
-
- printf("%u: Hello World\r\n", i++);
- HAL_GPIO_TogglePin(LED_GREEN_GPIO_Port, LED_GREEN_Pin);
- HAL_Delay(j);
- HAL_IWDG_Refresh(&hiwdg);
}
+ printf("\r\nDone! \r\n\r\n");
+
+ while(1) {};
}
void SystemClock_Config(void)
@@ -89,24 +81,13 @@ void SystemClock_Config(void)
Error_Handler();
}
- PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2;
+ PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART2 | RCC_PERIPHCLK_I2C1;
PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) {
Error_Handler();
}
}
-static void MX_IWDG_Init(void)
-{
- hiwdg.Instance = IWDG;
- hiwdg.Init.Prescaler = IWDG_PRESCALER_4;
- hiwdg.Init.Window = 4095;
- hiwdg.Init.Reload = 4095;
- if (HAL_IWDG_Init(&hiwdg) != HAL_OK) {
- Error_Handler();
- }
-}
-
static void MX_USART2_UART_Init(void)
{
huart2.Instance = USART2;
@@ -125,6 +106,52 @@ static void MX_USART2_UART_Init(void)
}
}
+/**
+ * @brief I2C1 Initialization Function
+ * @param None
+ * @retval None
+ */
+static void MX_I2C1_Init(void)
+{
+
+ /* USER CODE BEGIN I2C1_Init 0 */
+
+ /* USER CODE END I2C1_Init 0 */
+
+ /* USER CODE BEGIN I2C1_Init 1 */
+
+ /* USER CODE END I2C1_Init 1 */
+ hi2c1.Instance = I2C1;
+ hi2c1.Init.Timing = 0x10707DBC;
+ hi2c1.Init.OwnAddress1 = 0;
+ hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
+ hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
+ hi2c1.Init.OwnAddress2 = 0;
+ hi2c1.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
+ hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
+ hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
+ if (HAL_I2C_Init(&hi2c1) != HAL_OK)
+ {
+ Error_Handler();
+ }
+ /** Configure Analogue filter
+ */
+ if (HAL_I2CEx_ConfigAnalogFilter(&hi2c1, I2C_ANALOGFILTER_ENABLE) != HAL_OK)
+ {
+ Error_Handler();
+ }
+ /** Configure Digital filter
+ */
+ if (HAL_I2CEx_ConfigDigitalFilter(&hi2c1, 0) != HAL_OK)
+ {
+ Error_Handler();
+ }
+ /* USER CODE BEGIN I2C1_Init 2 */
+
+ /* USER CODE END I2C1_Init 2 */
+
+}
+
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
@@ -148,11 +175,3 @@ void Error_Handler(void)
while (1) {
}
}
-
-#ifdef USE_FULL_ASSERT
-void assert_failed(uint8_t *file, uint32_t line)
-{
- /* User can add his own implementation to report the file name and line number,
- ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
-}
-#endif /* USE_FULL_ASSERT */
diff --git a/Core/Src/stm32g0xx_hal_msp.c b/Core/Src/stm32g0xx_hal_msp.c
index a30e4f1..26888cb 100644
--- a/Core/Src/stm32g0xx_hal_msp.c
+++ b/Core/Src/stm32g0xx_hal_msp.c
@@ -32,3 +32,30 @@ void HAL_UART_MspDeInit(UART_HandleTypeDef* huart)
HAL_GPIO_DeInit(GPIOA, USART2_TX_Pin | USART2_RX_Pin);
}
}
+
+void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)
+{
+ GPIO_InitTypeDef GPIO_InitStruct = {0};
+ if(hi2c->Instance == I2C1) {
+ __HAL_RCC_GPIOA_CLK_ENABLE();
+ GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_10;
+ GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
+ GPIO_InitStruct.Pull = GPIO_PULLUP;
+ GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
+ GPIO_InitStruct.Alternate = GPIO_AF6_I2C1;
+ HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
+ __HAL_RCC_I2C1_CLK_ENABLE();
+ HAL_NVIC_SetPriority(I2C1_IRQn, 0, 0);
+ HAL_NVIC_EnableIRQ(I2C1_IRQn);
+ }
+}
+
+void HAL_I2C_MspDeInit(I2C_HandleTypeDef* hi2c)
+{
+ if(hi2c->Instance == I2C1) {
+ __HAL_RCC_I2C1_CLK_DISABLE();
+ HAL_GPIO_DeInit(GPIOA, GPIO_PIN_9);
+ HAL_GPIO_DeInit(GPIOA, GPIO_PIN_10);
+ HAL_NVIC_DisableIRQ(I2C1_IRQn);
+ }
+}
diff --git a/Drivers/STM32G0xx_HAL_Driver/Inc/stm32g0xx_hal_i2c.h b/Drivers/STM32G0xx_HAL_Driver/Inc/stm32g0xx_hal_i2c.h
new file mode 100644
index 0000000..e05d5fa
--- /dev/null
+++ b/Drivers/STM32G0xx_HAL_Driver/Inc/stm32g0xx_hal_i2c.h
@@ -0,0 +1,782 @@
+/**
+ ******************************************************************************
+ * @file stm32g0xx_hal_i2c.h
+ * @author MCD Application Team
+ * @brief Header file of I2C HAL module.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2018 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef STM32G0xx_HAL_I2C_H
+#define STM32G0xx_HAL_I2C_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32g0xx_hal_def.h"
+
+/** @addtogroup STM32G0xx_HAL_Driver
+ * @{
+ */
+
+/** @addtogroup I2C
+ * @{
+ */
+
+/* Exported types ------------------------------------------------------------*/
+/** @defgroup I2C_Exported_Types I2C Exported Types
+ * @{
+ */
+
+/** @defgroup I2C_Configuration_Structure_definition I2C Configuration Structure definition
+ * @brief I2C Configuration Structure definition
+ * @{
+ */
+typedef struct
+{
+ uint32_t Timing; /*!< Specifies the I2C_TIMINGR_register value.
+ This parameter calculated by referring to I2C initialization
+ section in Reference manual */
+
+ uint32_t OwnAddress1; /*!< Specifies the first device own address.
+ This parameter can be a 7-bit or 10-bit address. */
+
+ uint32_t AddressingMode; /*!< Specifies if 7-bit or 10-bit addressing mode is selected.
+ This parameter can be a value of @ref I2C_ADDRESSING_MODE */
+
+ uint32_t DualAddressMode; /*!< Specifies if dual addressing mode is selected.
+ This parameter can be a value of @ref I2C_DUAL_ADDRESSING_MODE */
+
+ uint32_t OwnAddress2; /*!< Specifies the second device own address if dual addressing mode is selected
+ This parameter can be a 7-bit address. */
+
+ uint32_t OwnAddress2Masks; /*!< Specifies the acknowledge mask address second device own address if dual addressing mode is selected
+ This parameter can be a value of @ref I2C_OWN_ADDRESS2_MASKS */
+
+ uint32_t GeneralCallMode; /*!< Specifies if general call mode is selected.
+ This parameter can be a value of @ref I2C_GENERAL_CALL_ADDRESSING_MODE */
+
+ uint32_t NoStretchMode; /*!< Specifies if nostretch mode is selected.
+ This parameter can be a value of @ref I2C_NOSTRETCH_MODE */
+
+} I2C_InitTypeDef;
+
+/**
+ * @}
+ */
+
+/** @defgroup HAL_state_structure_definition HAL state structure definition
+ * @brief HAL State structure definition
+ * @note HAL I2C State value coding follow below described bitmap :\n
+ * b7-b6 Error information\n
+ * 00 : No Error\n
+ * 01 : Abort (Abort user request on going)\n
+ * 10 : Timeout\n
+ * 11 : Error\n
+ * b5 Peripheral initialization status\n
+ * 0 : Reset (peripheral not initialized)\n
+ * 1 : Init done (peripheral initialized and ready to use. HAL I2C Init function called)\n
+ * b4 (not used)\n
+ * x : Should be set to 0\n
+ * b3\n
+ * 0 : Ready or Busy (No Listen mode ongoing)\n
+ * 1 : Listen (peripheral in Address Listen Mode)\n
+ * b2 Intrinsic process state\n
+ * 0 : Ready\n
+ * 1 : Busy (peripheral busy with some configuration or internal operations)\n
+ * b1 Rx state\n
+ * 0 : Ready (no Rx operation ongoing)\n
+ * 1 : Busy (Rx operation ongoing)\n
+ * b0 Tx state\n
+ * 0 : Ready (no Tx operation ongoing)\n
+ * 1 : Busy (Tx operation ongoing)
+ * @{
+ */
+typedef enum
+{
+ HAL_I2C_STATE_RESET = 0x00U, /*!< Peripheral is not yet Initialized */
+ HAL_I2C_STATE_READY = 0x20U, /*!< Peripheral Initialized and ready for use */
+ HAL_I2C_STATE_BUSY = 0x24U, /*!< An internal process is ongoing */
+ HAL_I2C_STATE_BUSY_TX = 0x21U, /*!< Data Transmission process is ongoing */
+ HAL_I2C_STATE_BUSY_RX = 0x22U, /*!< Data Reception process is ongoing */
+ HAL_I2C_STATE_LISTEN = 0x28U, /*!< Address Listen Mode is ongoing */
+ HAL_I2C_STATE_BUSY_TX_LISTEN = 0x29U, /*!< Address Listen Mode and Data Transmission
+ process is ongoing */
+ HAL_I2C_STATE_BUSY_RX_LISTEN = 0x2AU, /*!< Address Listen Mode and Data Reception
+ process is ongoing */
+ HAL_I2C_STATE_ABORT = 0x60U, /*!< Abort user request ongoing */
+ HAL_I2C_STATE_TIMEOUT = 0xA0U, /*!< Timeout state */
+ HAL_I2C_STATE_ERROR = 0xE0U /*!< Error */
+
+} HAL_I2C_StateTypeDef;
+
+/**
+ * @}
+ */
+
+/** @defgroup HAL_mode_structure_definition HAL mode structure definition
+ * @brief HAL Mode structure definition
+ * @note HAL I2C Mode value coding follow below described bitmap :\n
+ * b7 (not used)\n
+ * x : Should be set to 0\n
+ * b6\n
+ * 0 : None\n
+ * 1 : Memory (HAL I2C communication is in Memory Mode)\n
+ * b5\n
+ * 0 : None\n
+ * 1 : Slave (HAL I2C communication is in Slave Mode)\n
+ * b4\n
+ * 0 : None\n
+ * 1 : Master (HAL I2C communication is in Master Mode)\n
+ * b3-b2-b1-b0 (not used)\n
+ * xxxx : Should be set to 0000
+ * @{
+ */
+typedef enum
+{
+ HAL_I2C_MODE_NONE = 0x00U, /*!< No I2C communication on going */
+ HAL_I2C_MODE_MASTER = 0x10U, /*!< I2C communication is in Master Mode */
+ HAL_I2C_MODE_SLAVE = 0x20U, /*!< I2C communication is in Slave Mode */
+ HAL_I2C_MODE_MEM = 0x40U /*!< I2C communication is in Memory Mode */
+
+} HAL_I2C_ModeTypeDef;
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_Error_Code_definition I2C Error Code definition
+ * @brief I2C Error Code definition
+ * @{
+ */
+#define HAL_I2C_ERROR_NONE (0x00000000U) /*!< No error */
+#define HAL_I2C_ERROR_BERR (0x00000001U) /*!< BERR error */
+#define HAL_I2C_ERROR_ARLO (0x00000002U) /*!< ARLO error */
+#define HAL_I2C_ERROR_AF (0x00000004U) /*!< ACKF error */
+#define HAL_I2C_ERROR_OVR (0x00000008U) /*!< OVR error */
+#define HAL_I2C_ERROR_DMA (0x00000010U) /*!< DMA transfer error */
+#define HAL_I2C_ERROR_TIMEOUT (0x00000020U) /*!< Timeout error */
+#define HAL_I2C_ERROR_SIZE (0x00000040U) /*!< Size Management error */
+#define HAL_I2C_ERROR_DMA_PARAM (0x00000080U) /*!< DMA Parameter Error */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+#define HAL_I2C_ERROR_INVALID_CALLBACK (0x00000100U) /*!< Invalid Callback error */
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+#define HAL_I2C_ERROR_INVALID_PARAM (0x00000200U) /*!< Invalid Parameters error */
+/**
+ * @}
+ */
+
+/** @defgroup I2C_handle_Structure_definition I2C handle Structure definition
+ * @brief I2C handle Structure definition
+ * @{
+ */
+typedef struct __I2C_HandleTypeDef
+{
+ I2C_TypeDef *Instance; /*!< I2C registers base address */
+
+ I2C_InitTypeDef Init; /*!< I2C communication parameters */
+
+ uint8_t *pBuffPtr; /*!< Pointer to I2C transfer buffer */
+
+ uint16_t XferSize; /*!< I2C transfer size */
+
+ __IO uint16_t XferCount; /*!< I2C transfer counter */
+
+ __IO uint32_t XferOptions; /*!< I2C sequantial transfer options, this parameter can
+ be a value of @ref I2C_XFEROPTIONS */
+
+ __IO uint32_t PreviousState; /*!< I2C communication Previous state */
+
+ HAL_StatusTypeDef(*XferISR)(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources); /*!< I2C transfer IRQ handler function pointer */
+
+ DMA_HandleTypeDef *hdmatx; /*!< I2C Tx DMA handle parameters */
+
+ DMA_HandleTypeDef *hdmarx; /*!< I2C Rx DMA handle parameters */
+
+ HAL_LockTypeDef Lock; /*!< I2C locking object */
+
+ __IO HAL_I2C_StateTypeDef State; /*!< I2C communication state */
+
+ __IO HAL_I2C_ModeTypeDef Mode; /*!< I2C communication mode */
+
+ __IO uint32_t ErrorCode; /*!< I2C Error code */
+
+ __IO uint32_t AddrEventCount; /*!< I2C Address Event counter */
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ void (* MasterTxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Master Tx Transfer completed callback */
+ void (* MasterRxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Master Rx Transfer completed callback */
+ void (* SlaveTxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Slave Tx Transfer completed callback */
+ void (* SlaveRxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Slave Rx Transfer completed callback */
+ void (* ListenCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Listen Complete callback */
+ void (* MemTxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Memory Tx Transfer completed callback */
+ void (* MemRxCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Memory Rx Transfer completed callback */
+ void (* ErrorCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Error callback */
+ void (* AbortCpltCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Abort callback */
+
+ void (* AddrCallback)(struct __I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode); /*!< I2C Slave Address Match callback */
+
+ void (* MspInitCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Msp Init callback */
+ void (* MspDeInitCallback)(struct __I2C_HandleTypeDef *hi2c); /*!< I2C Msp DeInit callback */
+
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+} I2C_HandleTypeDef;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+/**
+ * @brief HAL I2C Callback ID enumeration definition
+ */
+typedef enum
+{
+ HAL_I2C_MASTER_TX_COMPLETE_CB_ID = 0x00U, /*!< I2C Master Tx Transfer completed callback ID */
+ HAL_I2C_MASTER_RX_COMPLETE_CB_ID = 0x01U, /*!< I2C Master Rx Transfer completed callback ID */
+ HAL_I2C_SLAVE_TX_COMPLETE_CB_ID = 0x02U, /*!< I2C Slave Tx Transfer completed callback ID */
+ HAL_I2C_SLAVE_RX_COMPLETE_CB_ID = 0x03U, /*!< I2C Slave Rx Transfer completed callback ID */
+ HAL_I2C_LISTEN_COMPLETE_CB_ID = 0x04U, /*!< I2C Listen Complete callback ID */
+ HAL_I2C_MEM_TX_COMPLETE_CB_ID = 0x05U, /*!< I2C Memory Tx Transfer callback ID */
+ HAL_I2C_MEM_RX_COMPLETE_CB_ID = 0x06U, /*!< I2C Memory Rx Transfer completed callback ID */
+ HAL_I2C_ERROR_CB_ID = 0x07U, /*!< I2C Error callback ID */
+ HAL_I2C_ABORT_CB_ID = 0x08U, /*!< I2C Abort callback ID */
+
+ HAL_I2C_MSPINIT_CB_ID = 0x09U, /*!< I2C Msp Init callback ID */
+ HAL_I2C_MSPDEINIT_CB_ID = 0x0AU /*!< I2C Msp DeInit callback ID */
+
+} HAL_I2C_CallbackIDTypeDef;
+
+/**
+ * @brief HAL I2C Callback pointer definition
+ */
+typedef void (*pI2C_CallbackTypeDef)(I2C_HandleTypeDef *hi2c); /*!< pointer to an I2C callback function */
+typedef void (*pI2C_AddrCallbackTypeDef)(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode); /*!< pointer to an I2C Address Match callback function */
+
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+/* Exported constants --------------------------------------------------------*/
+
+/** @defgroup I2C_Exported_Constants I2C Exported Constants
+ * @{
+ */
+
+/** @defgroup I2C_XFEROPTIONS I2C Sequential Transfer Options
+ * @{
+ */
+#define I2C_FIRST_FRAME ((uint32_t)I2C_SOFTEND_MODE)
+#define I2C_FIRST_AND_NEXT_FRAME ((uint32_t)(I2C_RELOAD_MODE | I2C_SOFTEND_MODE))
+#define I2C_NEXT_FRAME ((uint32_t)(I2C_RELOAD_MODE | I2C_SOFTEND_MODE))
+#define I2C_FIRST_AND_LAST_FRAME ((uint32_t)I2C_AUTOEND_MODE)
+#define I2C_LAST_FRAME ((uint32_t)I2C_AUTOEND_MODE)
+#define I2C_LAST_FRAME_NO_STOP ((uint32_t)I2C_SOFTEND_MODE)
+
+/* List of XferOptions in usage of :
+ * 1- Restart condition in all use cases (direction change or not)
+ */
+#define I2C_OTHER_FRAME (0x000000AAU)
+#define I2C_OTHER_AND_LAST_FRAME (0x0000AA00U)
+/**
+ * @}
+ */
+
+/** @defgroup I2C_ADDRESSING_MODE I2C Addressing Mode
+ * @{
+ */
+#define I2C_ADDRESSINGMODE_7BIT (0x00000001U)
+#define I2C_ADDRESSINGMODE_10BIT (0x00000002U)
+/**
+ * @}
+ */
+
+/** @defgroup I2C_DUAL_ADDRESSING_MODE I2C Dual Addressing Mode
+ * @{
+ */
+#define I2C_DUALADDRESS_DISABLE (0x00000000U)
+#define I2C_DUALADDRESS_ENABLE I2C_OAR2_OA2EN
+/**
+ * @}
+ */
+
+/** @defgroup I2C_OWN_ADDRESS2_MASKS I2C Own Address2 Masks
+ * @{
+ */
+#define I2C_OA2_NOMASK ((uint8_t)0x00U)
+#define I2C_OA2_MASK01 ((uint8_t)0x01U)
+#define I2C_OA2_MASK02 ((uint8_t)0x02U)
+#define I2C_OA2_MASK03 ((uint8_t)0x03U)
+#define I2C_OA2_MASK04 ((uint8_t)0x04U)
+#define I2C_OA2_MASK05 ((uint8_t)0x05U)
+#define I2C_OA2_MASK06 ((uint8_t)0x06U)
+#define I2C_OA2_MASK07 ((uint8_t)0x07U)
+/**
+ * @}
+ */
+
+/** @defgroup I2C_GENERAL_CALL_ADDRESSING_MODE I2C General Call Addressing Mode
+ * @{
+ */
+#define I2C_GENERALCALL_DISABLE (0x00000000U)
+#define I2C_GENERALCALL_ENABLE I2C_CR1_GCEN
+/**
+ * @}
+ */
+
+/** @defgroup I2C_NOSTRETCH_MODE I2C No-Stretch Mode
+ * @{
+ */
+#define I2C_NOSTRETCH_DISABLE (0x00000000U)
+#define I2C_NOSTRETCH_ENABLE I2C_CR1_NOSTRETCH
+/**
+ * @}
+ */
+
+/** @defgroup I2C_MEMORY_ADDRESS_SIZE I2C Memory Address Size
+ * @{
+ */
+#define I2C_MEMADD_SIZE_8BIT (0x00000001U)
+#define I2C_MEMADD_SIZE_16BIT (0x00000002U)
+/**
+ * @}
+ */
+
+/** @defgroup I2C_XFERDIRECTION I2C Transfer Direction Master Point of View
+ * @{
+ */
+#define I2C_DIRECTION_TRANSMIT (0x00000000U)
+#define I2C_DIRECTION_RECEIVE (0x00000001U)
+/**
+ * @}
+ */
+
+/** @defgroup I2C_RELOAD_END_MODE I2C Reload End Mode
+ * @{
+ */
+#define I2C_RELOAD_MODE I2C_CR2_RELOAD
+#define I2C_AUTOEND_MODE I2C_CR2_AUTOEND
+#define I2C_SOFTEND_MODE (0x00000000U)
+/**
+ * @}
+ */
+
+/** @defgroup I2C_START_STOP_MODE I2C Start or Stop Mode
+ * @{
+ */
+#define I2C_NO_STARTSTOP (0x00000000U)
+#define I2C_GENERATE_STOP (uint32_t)(0x80000000U | I2C_CR2_STOP)
+#define I2C_GENERATE_START_READ (uint32_t)(0x80000000U | I2C_CR2_START | I2C_CR2_RD_WRN)
+#define I2C_GENERATE_START_WRITE (uint32_t)(0x80000000U | I2C_CR2_START)
+/**
+ * @}
+ */
+
+/** @defgroup I2C_Interrupt_configuration_definition I2C Interrupt configuration definition
+ * @brief I2C Interrupt definition
+ * Elements values convention: 0xXXXXXXXX
+ * - XXXXXXXX : Interrupt control mask
+ * @{
+ */
+#define I2C_IT_ERRI I2C_CR1_ERRIE
+#define I2C_IT_TCI I2C_CR1_TCIE
+#define I2C_IT_STOPI I2C_CR1_STOPIE
+#define I2C_IT_NACKI I2C_CR1_NACKIE
+#define I2C_IT_ADDRI I2C_CR1_ADDRIE
+#define I2C_IT_RXI I2C_CR1_RXIE
+#define I2C_IT_TXI I2C_CR1_TXIE
+/**
+ * @}
+ */
+
+/** @defgroup I2C_Flag_definition I2C Flag definition
+ * @{
+ */
+#define I2C_FLAG_TXE I2C_ISR_TXE
+#define I2C_FLAG_TXIS I2C_ISR_TXIS
+#define I2C_FLAG_RXNE I2C_ISR_RXNE
+#define I2C_FLAG_ADDR I2C_ISR_ADDR
+#define I2C_FLAG_AF I2C_ISR_NACKF
+#define I2C_FLAG_STOPF I2C_ISR_STOPF
+#define I2C_FLAG_TC I2C_ISR_TC
+#define I2C_FLAG_TCR I2C_ISR_TCR
+#define I2C_FLAG_BERR I2C_ISR_BERR
+#define I2C_FLAG_ARLO I2C_ISR_ARLO
+#define I2C_FLAG_OVR I2C_ISR_OVR
+#define I2C_FLAG_PECERR I2C_ISR_PECERR
+#define I2C_FLAG_TIMEOUT I2C_ISR_TIMEOUT
+#define I2C_FLAG_ALERT I2C_ISR_ALERT
+#define I2C_FLAG_BUSY I2C_ISR_BUSY
+#define I2C_FLAG_DIR I2C_ISR_DIR
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* Exported macros -----------------------------------------------------------*/
+
+/** @defgroup I2C_Exported_Macros I2C Exported Macros
+ * @{
+ */
+
+/** @brief Reset I2C handle state.
+ * @param __HANDLE__ specifies the I2C Handle.
+ * @retval None
+ */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+#define __HAL_I2C_RESET_HANDLE_STATE(__HANDLE__) do{ \
+ (__HANDLE__)->State = HAL_I2C_STATE_RESET; \
+ (__HANDLE__)->MspInitCallback = NULL; \
+ (__HANDLE__)->MspDeInitCallback = NULL; \
+ } while(0)
+#else
+#define __HAL_I2C_RESET_HANDLE_STATE(__HANDLE__) ((__HANDLE__)->State = HAL_I2C_STATE_RESET)
+#endif
+
+/** @brief Enable the specified I2C interrupt.
+ * @param __HANDLE__ specifies the I2C Handle.
+ * @param __INTERRUPT__ specifies the interrupt source to enable.
+ * This parameter can be one of the following values:
+ * @arg @ref I2C_IT_ERRI Errors interrupt enable
+ * @arg @ref I2C_IT_TCI Transfer complete interrupt enable
+ * @arg @ref I2C_IT_STOPI STOP detection interrupt enable
+ * @arg @ref I2C_IT_NACKI NACK received interrupt enable
+ * @arg @ref I2C_IT_ADDRI Address match interrupt enable
+ * @arg @ref I2C_IT_RXI RX interrupt enable
+ * @arg @ref I2C_IT_TXI TX interrupt enable
+ *
+ * @retval None
+ */
+#define __HAL_I2C_ENABLE_IT(__HANDLE__, __INTERRUPT__) ((__HANDLE__)->Instance->CR1 |= (__INTERRUPT__))
+
+/** @brief Disable the specified I2C interrupt.
+ * @param __HANDLE__ specifies the I2C Handle.
+ * @param __INTERRUPT__ specifies the interrupt source to disable.
+ * This parameter can be one of the following values:
+ * @arg @ref I2C_IT_ERRI Errors interrupt enable
+ * @arg @ref I2C_IT_TCI Transfer complete interrupt enable
+ * @arg @ref I2C_IT_STOPI STOP detection interrupt enable
+ * @arg @ref I2C_IT_NACKI NACK received interrupt enable
+ * @arg @ref I2C_IT_ADDRI Address match interrupt enable
+ * @arg @ref I2C_IT_RXI RX interrupt enable
+ * @arg @ref I2C_IT_TXI TX interrupt enable
+ *
+ * @retval None
+ */
+#define __HAL_I2C_DISABLE_IT(__HANDLE__, __INTERRUPT__) ((__HANDLE__)->Instance->CR1 &= (~(__INTERRUPT__)))
+
+/** @brief Check whether the specified I2C interrupt source is enabled or not.
+ * @param __HANDLE__ specifies the I2C Handle.
+ * @param __INTERRUPT__ specifies the I2C interrupt source to check.
+ * This parameter can be one of the following values:
+ * @arg @ref I2C_IT_ERRI Errors interrupt enable
+ * @arg @ref I2C_IT_TCI Transfer complete interrupt enable
+ * @arg @ref I2C_IT_STOPI STOP detection interrupt enable
+ * @arg @ref I2C_IT_NACKI NACK received interrupt enable
+ * @arg @ref I2C_IT_ADDRI Address match interrupt enable
+ * @arg @ref I2C_IT_RXI RX interrupt enable
+ * @arg @ref I2C_IT_TXI TX interrupt enable
+ *
+ * @retval The new state of __INTERRUPT__ (SET or RESET).
+ */
+#define __HAL_I2C_GET_IT_SOURCE(__HANDLE__, __INTERRUPT__) ((((__HANDLE__)->Instance->CR1 & (__INTERRUPT__)) == (__INTERRUPT__)) ? SET : RESET)
+
+/** @brief Check whether the specified I2C flag is set or not.
+ * @param __HANDLE__ specifies the I2C Handle.
+ * @param __FLAG__ specifies the flag to check.
+ * This parameter can be one of the following values:
+ * @arg @ref I2C_FLAG_TXE Transmit data register empty
+ * @arg @ref I2C_FLAG_TXIS Transmit interrupt status
+ * @arg @ref I2C_FLAG_RXNE Receive data register not empty
+ * @arg @ref I2C_FLAG_ADDR Address matched (slave mode)
+ * @arg @ref I2C_FLAG_AF Acknowledge failure received flag
+ * @arg @ref I2C_FLAG_STOPF STOP detection flag
+ * @arg @ref I2C_FLAG_TC Transfer complete (master mode)
+ * @arg @ref I2C_FLAG_TCR Transfer complete reload
+ * @arg @ref I2C_FLAG_BERR Bus error
+ * @arg @ref I2C_FLAG_ARLO Arbitration lost
+ * @arg @ref I2C_FLAG_OVR Overrun/Underrun
+ * @arg @ref I2C_FLAG_PECERR PEC error in reception
+ * @arg @ref I2C_FLAG_TIMEOUT Timeout or Tlow detection flag
+ * @arg @ref I2C_FLAG_ALERT SMBus alert
+ * @arg @ref I2C_FLAG_BUSY Bus busy
+ * @arg @ref I2C_FLAG_DIR Transfer direction (slave mode)
+ *
+ * @retval The new state of __FLAG__ (SET or RESET).
+ */
+#define I2C_FLAG_MASK (0x0001FFFFU)
+#define __HAL_I2C_GET_FLAG(__HANDLE__, __FLAG__) (((((__HANDLE__)->Instance->ISR) & (__FLAG__)) == (__FLAG__)) ? SET : RESET)
+
+/** @brief Clear the I2C pending flags which are cleared by writing 1 in a specific bit.
+ * @param __HANDLE__ specifies the I2C Handle.
+ * @param __FLAG__ specifies the flag to clear.
+ * This parameter can be any combination of the following values:
+ * @arg @ref I2C_FLAG_TXE Transmit data register empty
+ * @arg @ref I2C_FLAG_ADDR Address matched (slave mode)
+ * @arg @ref I2C_FLAG_AF Acknowledge failure received flag
+ * @arg @ref I2C_FLAG_STOPF STOP detection flag
+ * @arg @ref I2C_FLAG_BERR Bus error
+ * @arg @ref I2C_FLAG_ARLO Arbitration lost
+ * @arg @ref I2C_FLAG_OVR Overrun/Underrun
+ * @arg @ref I2C_FLAG_PECERR PEC error in reception
+ * @arg @ref I2C_FLAG_TIMEOUT Timeout or Tlow detection flag
+ * @arg @ref I2C_FLAG_ALERT SMBus alert
+ *
+ * @retval None
+ */
+#define __HAL_I2C_CLEAR_FLAG(__HANDLE__, __FLAG__) (((__FLAG__) == I2C_FLAG_TXE) ? ((__HANDLE__)->Instance->ISR |= (__FLAG__)) \
+ : ((__HANDLE__)->Instance->ICR = (__FLAG__)))
+
+/** @brief Enable the specified I2C peripheral.
+ * @param __HANDLE__ specifies the I2C Handle.
+ * @retval None
+ */
+#define __HAL_I2C_ENABLE(__HANDLE__) (SET_BIT((__HANDLE__)->Instance->CR1, I2C_CR1_PE))
+
+/** @brief Disable the specified I2C peripheral.
+ * @param __HANDLE__ specifies the I2C Handle.
+ * @retval None
+ */
+#define __HAL_I2C_DISABLE(__HANDLE__) (CLEAR_BIT((__HANDLE__)->Instance->CR1, I2C_CR1_PE))
+
+/** @brief Generate a Non-Acknowledge I2C peripheral in Slave mode.
+ * @param __HANDLE__ specifies the I2C Handle.
+ * @retval None
+ */
+#define __HAL_I2C_GENERATE_NACK(__HANDLE__) (SET_BIT((__HANDLE__)->Instance->CR2, I2C_CR2_NACK))
+/**
+ * @}
+ */
+
+/* Include I2C HAL Extended module */
+#include "stm32g0xx_hal_i2c_ex.h"
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup I2C_Exported_Functions
+ * @{
+ */
+
+/** @addtogroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @{
+ */
+/* Initialization and de-initialization functions******************************/
+HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c);
+HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c);
+
+/* Callbacks Register/UnRegister functions ***********************************/
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+HAL_StatusTypeDef HAL_I2C_RegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID, pI2C_CallbackTypeDef pCallback);
+HAL_StatusTypeDef HAL_I2C_UnRegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID);
+
+HAL_StatusTypeDef HAL_I2C_RegisterAddrCallback(I2C_HandleTypeDef *hi2c, pI2C_AddrCallbackTypeDef pCallback);
+HAL_StatusTypeDef HAL_I2C_UnRegisterAddrCallback(I2C_HandleTypeDef *hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+/**
+ * @}
+ */
+
+/** @addtogroup I2C_Exported_Functions_Group2 Input and Output operation functions
+ * @{
+ */
+/* IO operation functions ****************************************************/
+/******* Blocking mode: Polling */
+HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout);
+HAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout);
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout);
+HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout);
+HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout);
+HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout);
+HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout);
+
+/******* Non-Blocking mode: Interrupt */
+HAL_StatusTypeDef HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_I2C_Master_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size);
+
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
+HAL_StatusTypeDef HAL_I2C_EnableListen_IT(I2C_HandleTypeDef *hi2c);
+HAL_StatusTypeDef HAL_I2C_DisableListen_IT(I2C_HandleTypeDef *hi2c);
+HAL_StatusTypeDef HAL_I2C_Master_Abort_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress);
+
+/******* Non-Blocking mode: DMA */
+HAL_StatusTypeDef HAL_I2C_Master_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_I2C_Master_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size);
+HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size);
+
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions);
+/**
+ * @}
+ */
+
+/** @addtogroup I2C_IRQ_Handler_and_Callbacks IRQ Handler and Callbacks
+ * @{
+ */
+/******* I2C IRQHandler and Callbacks used in non blocking modes (Interrupt and DMA) */
+void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode);
+void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_MemTxCpltCallback(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c);
+void HAL_I2C_AbortCpltCallback(I2C_HandleTypeDef *hi2c);
+/**
+ * @}
+ */
+
+/** @addtogroup I2C_Exported_Functions_Group3 Peripheral State, Mode and Error functions
+ * @{
+ */
+/* Peripheral State, Mode and Error functions *********************************/
+HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c);
+HAL_I2C_ModeTypeDef HAL_I2C_GetMode(I2C_HandleTypeDef *hi2c);
+uint32_t HAL_I2C_GetError(I2C_HandleTypeDef *hi2c);
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* Private constants ---------------------------------------------------------*/
+/** @defgroup I2C_Private_Constants I2C Private Constants
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/* Private macros ------------------------------------------------------------*/
+/** @defgroup I2C_Private_Macro I2C Private Macros
+ * @{
+ */
+
+#define IS_I2C_ADDRESSING_MODE(MODE) (((MODE) == I2C_ADDRESSINGMODE_7BIT) || \
+ ((MODE) == I2C_ADDRESSINGMODE_10BIT))
+
+#define IS_I2C_DUAL_ADDRESS(ADDRESS) (((ADDRESS) == I2C_DUALADDRESS_DISABLE) || \
+ ((ADDRESS) == I2C_DUALADDRESS_ENABLE))
+
+#define IS_I2C_OWN_ADDRESS2_MASK(MASK) (((MASK) == I2C_OA2_NOMASK) || \
+ ((MASK) == I2C_OA2_MASK01) || \
+ ((MASK) == I2C_OA2_MASK02) || \
+ ((MASK) == I2C_OA2_MASK03) || \
+ ((MASK) == I2C_OA2_MASK04) || \
+ ((MASK) == I2C_OA2_MASK05) || \
+ ((MASK) == I2C_OA2_MASK06) || \
+ ((MASK) == I2C_OA2_MASK07))
+
+#define IS_I2C_GENERAL_CALL(CALL) (((CALL) == I2C_GENERALCALL_DISABLE) || \
+ ((CALL) == I2C_GENERALCALL_ENABLE))
+
+#define IS_I2C_NO_STRETCH(STRETCH) (((STRETCH) == I2C_NOSTRETCH_DISABLE) || \
+ ((STRETCH) == I2C_NOSTRETCH_ENABLE))
+
+#define IS_I2C_MEMADD_SIZE(SIZE) (((SIZE) == I2C_MEMADD_SIZE_8BIT) || \
+ ((SIZE) == I2C_MEMADD_SIZE_16BIT))
+
+#define IS_TRANSFER_MODE(MODE) (((MODE) == I2C_RELOAD_MODE) || \
+ ((MODE) == I2C_AUTOEND_MODE) || \
+ ((MODE) == I2C_SOFTEND_MODE))
+
+#define IS_TRANSFER_REQUEST(REQUEST) (((REQUEST) == I2C_GENERATE_STOP) || \
+ ((REQUEST) == I2C_GENERATE_START_READ) || \
+ ((REQUEST) == I2C_GENERATE_START_WRITE) || \
+ ((REQUEST) == I2C_NO_STARTSTOP))
+
+#define IS_I2C_TRANSFER_OPTIONS_REQUEST(REQUEST) (((REQUEST) == I2C_FIRST_FRAME) || \
+ ((REQUEST) == I2C_FIRST_AND_NEXT_FRAME) || \
+ ((REQUEST) == I2C_NEXT_FRAME) || \
+ ((REQUEST) == I2C_FIRST_AND_LAST_FRAME) || \
+ ((REQUEST) == I2C_LAST_FRAME) || \
+ ((REQUEST) == I2C_LAST_FRAME_NO_STOP) || \
+ IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(REQUEST))
+
+#define IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(REQUEST) (((REQUEST) == I2C_OTHER_FRAME) || \
+ ((REQUEST) == I2C_OTHER_AND_LAST_FRAME))
+
+#define I2C_RESET_CR2(__HANDLE__) ((__HANDLE__)->Instance->CR2 &= (uint32_t)~((uint32_t)(I2C_CR2_SADD | I2C_CR2_HEAD10R | I2C_CR2_NBYTES | I2C_CR2_RELOAD | I2C_CR2_RD_WRN)))
+
+#define I2C_GET_ADDR_MATCH(__HANDLE__) ((uint16_t)(((__HANDLE__)->Instance->ISR & I2C_ISR_ADDCODE) >> 16U))
+#define I2C_GET_DIR(__HANDLE__) ((uint8_t)(((__HANDLE__)->Instance->ISR & I2C_ISR_DIR) >> 16U))
+#define I2C_GET_STOP_MODE(__HANDLE__) ((__HANDLE__)->Instance->CR2 & I2C_CR2_AUTOEND)
+#define I2C_GET_OWN_ADDRESS1(__HANDLE__) ((uint16_t)((__HANDLE__)->Instance->OAR1 & I2C_OAR1_OA1))
+#define I2C_GET_OWN_ADDRESS2(__HANDLE__) ((uint16_t)((__HANDLE__)->Instance->OAR2 & I2C_OAR2_OA2))
+
+#define IS_I2C_OWN_ADDRESS1(ADDRESS1) ((ADDRESS1) <= 0x000003FFU)
+#define IS_I2C_OWN_ADDRESS2(ADDRESS2) ((ADDRESS2) <= (uint16_t)0x00FFU)
+
+#define I2C_MEM_ADD_MSB(__ADDRESS__) ((uint8_t)((uint16_t)(((uint16_t)((__ADDRESS__) & (uint16_t)(0xFF00U))) >> 8U)))
+#define I2C_MEM_ADD_LSB(__ADDRESS__) ((uint8_t)((uint16_t)((__ADDRESS__) & (uint16_t)(0x00FFU))))
+
+#define I2C_GENERATE_START(__ADDMODE__,__ADDRESS__) (((__ADDMODE__) == I2C_ADDRESSINGMODE_7BIT) ? (uint32_t)((((uint32_t)(__ADDRESS__) & (I2C_CR2_SADD)) | (I2C_CR2_START) | (I2C_CR2_AUTOEND)) & (~I2C_CR2_RD_WRN)) : \
+ (uint32_t)((((uint32_t)(__ADDRESS__) & (I2C_CR2_SADD)) | (I2C_CR2_ADD10) | (I2C_CR2_START)) & (~I2C_CR2_RD_WRN)))
+
+#define I2C_CHECK_FLAG(__ISR__, __FLAG__) ((((__ISR__) & ((__FLAG__) & I2C_FLAG_MASK)) == ((__FLAG__) & I2C_FLAG_MASK)) ? SET : RESET)
+#define I2C_CHECK_IT_SOURCE(__CR1__, __IT__) ((((__CR1__) & (__IT__)) == (__IT__)) ? SET : RESET)
+/**
+ * @}
+ */
+
+/* Private Functions ---------------------------------------------------------*/
+/** @defgroup I2C_Private_Functions I2C Private Functions
+ * @{
+ */
+/* Private functions are defined in stm32g0xx_hal_i2c.c file */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* STM32G0xx_HAL_I2C_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/Drivers/STM32G0xx_HAL_Driver/Inc/stm32g0xx_hal_i2c_ex.h b/Drivers/STM32G0xx_HAL_Driver/Inc/stm32g0xx_hal_i2c_ex.h
new file mode 100644
index 0000000..41b5554
--- /dev/null
+++ b/Drivers/STM32G0xx_HAL_Driver/Inc/stm32g0xx_hal_i2c_ex.h
@@ -0,0 +1,166 @@
+/**
+ ******************************************************************************
+ * @file stm32g0xx_hal_i2c_ex.h
+ * @author MCD Application Team
+ * @brief Header file of I2C HAL Extended module.
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2018 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef STM32G0xx_HAL_I2C_EX_H
+#define STM32G0xx_HAL_I2C_EX_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32g0xx_hal_def.h"
+
+/** @addtogroup STM32G0xx_HAL_Driver
+ * @{
+ */
+
+/** @addtogroup I2CEx
+ * @{
+ */
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+
+/** @defgroup I2CEx_Exported_Constants I2C Extended Exported Constants
+ * @{
+ */
+
+/** @defgroup I2CEx_Analog_Filter I2C Extended Analog Filter
+ * @{
+ */
+#define I2C_ANALOGFILTER_ENABLE 0x00000000U
+#define I2C_ANALOGFILTER_DISABLE I2C_CR1_ANFOFF
+/**
+ * @}
+ */
+
+/** @defgroup I2CEx_FastModePlus I2C Extended Fast Mode Plus
+ * @{
+ */
+#define I2C_FMP_NOT_SUPPORTED 0xAAAA0000U /*!< Fast Mode Plus not supported */
+#define I2C_FASTMODEPLUS_PA9 SYSCFG_CFGR1_I2C_PA9_FMP /*!< Enable Fast Mode Plus on PA9 */
+#define I2C_FASTMODEPLUS_PA10 SYSCFG_CFGR1_I2C_PA10_FMP /*!< Enable Fast Mode Plus on PA10 */
+#define I2C_FASTMODEPLUS_PB6 SYSCFG_CFGR1_I2C_PB6_FMP /*!< Enable Fast Mode Plus on PB6 */
+#define I2C_FASTMODEPLUS_PB7 SYSCFG_CFGR1_I2C_PB7_FMP /*!< Enable Fast Mode Plus on PB7 */
+#define I2C_FASTMODEPLUS_PB8 SYSCFG_CFGR1_I2C_PB8_FMP /*!< Enable Fast Mode Plus on PB8 */
+#define I2C_FASTMODEPLUS_PB9 SYSCFG_CFGR1_I2C_PB9_FMP /*!< Enable Fast Mode Plus on PB9 */
+#define I2C_FASTMODEPLUS_I2C1 SYSCFG_CFGR1_I2C1_FMP /*!< Enable Fast Mode Plus on I2C1 pins */
+#define I2C_FASTMODEPLUS_I2C2 SYSCFG_CFGR1_I2C2_FMP /*!< Enable Fast Mode Plus on I2C2 pins */
+#if defined(SYSCFG_CFGR1_I2C3_FMP)
+#define I2C_FASTMODEPLUS_I2C3 SYSCFG_CFGR1_I2C3_FMP /*!< Enable Fast Mode Plus on I2C3 pins */
+#else
+#define I2C_FASTMODEPLUS_I2C3 (uint32_t)(0x00000400U | I2C_FMP_NOT_SUPPORTED) /*!< Fast Mode Plus I2C3 not supported */
+#endif
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions --------------------------------------------------------*/
+
+/** @addtogroup I2CEx_Exported_Functions I2C Extended Exported Functions
+ * @{
+ */
+
+/** @addtogroup I2CEx_Exported_Functions_Group1 Extended features functions
+ * @brief Extended features functions
+ * @{
+ */
+
+/* Peripheral Control functions ************************************************/
+HAL_StatusTypeDef HAL_I2CEx_ConfigAnalogFilter(I2C_HandleTypeDef *hi2c, uint32_t AnalogFilter);
+HAL_StatusTypeDef HAL_I2CEx_ConfigDigitalFilter(I2C_HandleTypeDef *hi2c, uint32_t DigitalFilter);
+HAL_StatusTypeDef HAL_I2CEx_EnableWakeUp(I2C_HandleTypeDef *hi2c);
+HAL_StatusTypeDef HAL_I2CEx_DisableWakeUp(I2C_HandleTypeDef *hi2c);
+void HAL_I2CEx_EnableFastModePlus(uint32_t ConfigFastModePlus);
+void HAL_I2CEx_DisableFastModePlus(uint32_t ConfigFastModePlus);
+
+/* Private constants ---------------------------------------------------------*/
+/** @defgroup I2CEx_Private_Constants I2C Extended Private Constants
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/* Private macros ------------------------------------------------------------*/
+/** @defgroup I2CEx_Private_Macro I2C Extended Private Macros
+ * @{
+ */
+#define IS_I2C_ANALOG_FILTER(FILTER) (((FILTER) == I2C_ANALOGFILTER_ENABLE) || \
+ ((FILTER) == I2C_ANALOGFILTER_DISABLE))
+
+#define IS_I2C_DIGITAL_FILTER(FILTER) ((FILTER) <= 0x0000000FU)
+
+#define IS_I2C_FASTMODEPLUS(__CONFIG__) ((((__CONFIG__) & I2C_FMP_NOT_SUPPORTED) != I2C_FMP_NOT_SUPPORTED) && \
+ ((((__CONFIG__) & (I2C_FASTMODEPLUS_PA9)) == I2C_FASTMODEPLUS_PA9) || \
+ (((__CONFIG__) & (I2C_FASTMODEPLUS_PA10)) == I2C_FASTMODEPLUS_PA10) || \
+ (((__CONFIG__) & (I2C_FASTMODEPLUS_PB6)) == I2C_FASTMODEPLUS_PB6) || \
+ (((__CONFIG__) & (I2C_FASTMODEPLUS_PB7)) == I2C_FASTMODEPLUS_PB7) || \
+ (((__CONFIG__) & (I2C_FASTMODEPLUS_PB8)) == I2C_FASTMODEPLUS_PB8) || \
+ (((__CONFIG__) & (I2C_FASTMODEPLUS_PB9)) == I2C_FASTMODEPLUS_PB9) || \
+ (((__CONFIG__) & (I2C_FASTMODEPLUS_I2C1)) == I2C_FASTMODEPLUS_I2C1) || \
+ (((__CONFIG__) & (I2C_FASTMODEPLUS_I2C2)) == I2C_FASTMODEPLUS_I2C2) || \
+ (((__CONFIG__) & (I2C_FASTMODEPLUS_I2C3)) == I2C_FASTMODEPLUS_I2C3)))
+
+
+
+/**
+ * @}
+ */
+
+/* Private Functions ---------------------------------------------------------*/
+/** @defgroup I2CEx_Private_Functions I2C Extended Private Functions
+ * @{
+ */
+/* Private functions are defined in stm32g0xx_hal_i2c_ex.c file */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* STM32G0xx_HAL_I2C_EX_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_i2c.c b/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_i2c.c
new file mode 100644
index 0000000..1be88e1
--- /dev/null
+++ b/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_i2c.c
@@ -0,0 +1,6613 @@
+/**
+ ******************************************************************************
+ * @file stm32g0xx_hal_i2c.c
+ * @author MCD Application Team
+ * @brief I2C HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the Inter Integrated Circuit (I2C) peripheral:
+ * + Initialization and de-initialization functions
+ * + IO operation functions
+ * + Peripheral State and Errors functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ The I2C HAL driver can be used as follows:
+
+ (#) Declare a I2C_HandleTypeDef handle structure, for example:
+ I2C_HandleTypeDef hi2c;
+
+ (#)Initialize the I2C low level resources by implementing the @ref HAL_I2C_MspInit() API:
+ (##) Enable the I2Cx interface clock
+ (##) I2C pins configuration
+ (+++) Enable the clock for the I2C GPIOs
+ (+++) Configure I2C pins as alternate function open-drain
+ (##) NVIC configuration if you need to use interrupt process
+ (+++) Configure the I2Cx interrupt priority
+ (+++) Enable the NVIC I2C IRQ Channel
+ (##) DMA Configuration if you need to use DMA process
+ (+++) Declare a DMA_HandleTypeDef handle structure for the transmit or receive channel
+ (+++) Enable the DMAx interface clock using
+ (+++) Configure the DMA handle parameters
+ (+++) Configure the DMA Tx or Rx channel
+ (+++) Associate the initialized DMA handle to the hi2c DMA Tx or Rx handle
+ (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on
+ the DMA Tx or Rx channel
+
+ (#) Configure the Communication Clock Timing, Own Address1, Master Addressing mode, Dual Addressing mode,
+ Own Address2, Own Address2 Mask, General call and Nostretch mode in the hi2c Init structure.
+
+ (#) Initialize the I2C registers by calling the @ref HAL_I2C_Init(), configures also the low level Hardware
+ (GPIO, CLOCK, NVIC...etc) by calling the customized @ref HAL_I2C_MspInit(&hi2c) API.
+
+ (#) To check if target device is ready for communication, use the function @ref HAL_I2C_IsDeviceReady()
+
+ (#) For I2C IO and IO MEM operations, three operation modes are available within this driver :
+
+ *** Polling mode IO operation ***
+ =================================
+ [..]
+ (+) Transmit in master mode an amount of data in blocking mode using @ref HAL_I2C_Master_Transmit()
+ (+) Receive in master mode an amount of data in blocking mode using @ref HAL_I2C_Master_Receive()
+ (+) Transmit in slave mode an amount of data in blocking mode using @ref HAL_I2C_Slave_Transmit()
+ (+) Receive in slave mode an amount of data in blocking mode using @ref HAL_I2C_Slave_Receive()
+
+ *** Polling mode IO MEM operation ***
+ =====================================
+ [..]
+ (+) Write an amount of data in blocking mode to a specific memory address using @ref HAL_I2C_Mem_Write()
+ (+) Read an amount of data in blocking mode from a specific memory address using @ref HAL_I2C_Mem_Read()
+
+
+ *** Interrupt mode IO operation ***
+ ===================================
+ [..]
+ (+) Transmit in master mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Transmit_IT()
+ (+) At transmission end of transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback()
+ (+) Receive in master mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Receive_IT()
+ (+) At reception end of transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback()
+ (+) Transmit in slave mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Transmit_IT()
+ (+) At transmission end of transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback()
+ (+) Receive in slave mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Receive_IT()
+ (+) At reception end of transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback()
+ (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback()
+ (+) Abort a master I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT()
+ (+) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback()
+ (+) Discard a slave I2C process communication using @ref __HAL_I2C_GENERATE_NACK() macro.
+ This action will inform Master to generate a Stop condition to discard the communication.
+
+
+ *** Interrupt mode or DMA mode IO sequential operation ***
+ ==========================================================
+ [..]
+ (@) These interfaces allow to manage a sequential transfer with a repeated start condition
+ when a direction change during transfer
+ [..]
+ (+) A specific option field manage the different steps of a sequential transfer
+ (+) Option field values are defined through @ref I2C_XFEROPTIONS and are listed below:
+ (++) I2C_FIRST_AND_LAST_FRAME: No sequential usage, functional is same as associated interfaces in no sequential mode
+ (++) I2C_FIRST_FRAME: Sequential usage, this option allow to manage a sequence with start condition, address
+ and data to transfer without a final stop condition
+ (++) I2C_FIRST_AND_NEXT_FRAME: Sequential usage (Master only), this option allow to manage a sequence with start condition, address
+ and data to transfer without a final stop condition, an then permit a call the same master sequential interface
+ several times (like @ref HAL_I2C_Master_Seq_Transmit_IT() then @ref HAL_I2C_Master_Seq_Transmit_IT()
+ or @ref HAL_I2C_Master_Seq_Transmit_DMA() then @ref HAL_I2C_Master_Seq_Transmit_DMA())
+ (++) I2C_NEXT_FRAME: Sequential usage, this option allow to manage a sequence with a restart condition, address
+ and with new data to transfer if the direction change or manage only the new data to transfer
+ if no direction change and without a final stop condition in both cases
+ (++) I2C_LAST_FRAME: Sequential usage, this option allow to manage a sequance with a restart condition, address
+ and with new data to transfer if the direction change or manage only the new data to transfer
+ if no direction change and with a final stop condition in both cases
+ (++) I2C_LAST_FRAME_NO_STOP: Sequential usage (Master only), this option allow to manage a restart condition after several call of the same master sequential
+ interface several times (link with option I2C_FIRST_AND_NEXT_FRAME).
+ Usage can, transfer several bytes one by one using HAL_I2C_Master_Seq_Transmit_IT(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME)
+ or HAL_I2C_Master_Seq_Receive_IT(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME)
+ or HAL_I2C_Master_Seq_Transmit_DMA(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME)
+ or HAL_I2C_Master_Seq_Receive_DMA(option I2C_FIRST_AND_NEXT_FRAME then I2C_NEXT_FRAME).
+ Then usage of this option I2C_LAST_FRAME_NO_STOP at the last Transmit or Receive sequence permit to call the opposite interface Receive or Transmit
+ without stopping the communication and so generate a restart condition.
+ (++) I2C_OTHER_FRAME: Sequential usage (Master only), this option allow to manage a restart condition after each call of the same master sequential
+ interface.
+ Usage can, transfer several bytes one by one with a restart with slave address between each bytes using HAL_I2C_Master_Seq_Transmit_IT(option I2C_FIRST_FRAME then I2C_OTHER_FRAME)
+ or HAL_I2C_Master_Seq_Receive_IT(option I2C_FIRST_FRAME then I2C_OTHER_FRAME)
+ or HAL_I2C_Master_Seq_Transmit_DMA(option I2C_FIRST_FRAME then I2C_OTHER_FRAME)
+ or HAL_I2C_Master_Seq_Receive_DMA(option I2C_FIRST_FRAME then I2C_OTHER_FRAME).
+ Then usage of this option I2C_OTHER_AND_LAST_FRAME at the last frame to help automatic generation of STOP condition.
+
+ (+) Different sequential I2C interfaces are listed below:
+ (++) Sequential transmit in master I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Seq_Transmit_IT()
+ or using @ref HAL_I2C_Master_Seq_Transmit_DMA()
+ (+++) At transmission end of current frame transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback()
+ (++) Sequential receive in master I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Master_Seq_Receive_IT()
+ or using @ref HAL_I2C_Master_Seq_Receive_DMA()
+ (+++) At reception end of current frame transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback()
+ (++) Abort a master IT or DMA I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT()
+ (+++) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback()
+ (++) Enable/disable the Address listen mode in slave I2C mode using @ref HAL_I2C_EnableListen_IT() @ref HAL_I2C_DisableListen_IT()
+ (+++) When address slave I2C match, @ref HAL_I2C_AddrCallback() is executed and user can
+ add his own code to check the Address Match Code and the transmission direction request by master (Write/Read).
+ (+++) At Listen mode end @ref HAL_I2C_ListenCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ListenCpltCallback()
+ (++) Sequential transmit in slave I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Seq_Transmit_IT()
+ or using @ref HAL_I2C_Slave_Seq_Transmit_DMA()
+ (+++) At transmission end of current frame transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback()
+ (++) Sequential receive in slave I2C mode an amount of data in non-blocking mode using @ref HAL_I2C_Slave_Seq_Receive_IT()
+ or using @ref HAL_I2C_Slave_Seq_Receive_DMA()
+ (+++) At reception end of current frame transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback()
+ (++) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback()
+ (++) Discard a slave I2C process communication using @ref __HAL_I2C_GENERATE_NACK() macro.
+ This action will inform Master to generate a Stop condition to discard the communication.
+
+ *** Interrupt mode IO MEM operation ***
+ =======================================
+ [..]
+ (+) Write an amount of data in non-blocking mode with Interrupt to a specific memory address using
+ @ref HAL_I2C_Mem_Write_IT()
+ (+) At Memory end of write transfer, @ref HAL_I2C_MemTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MemTxCpltCallback()
+ (+) Read an amount of data in non-blocking mode with Interrupt from a specific memory address using
+ @ref HAL_I2C_Mem_Read_IT()
+ (+) At Memory end of read transfer, @ref HAL_I2C_MemRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MemRxCpltCallback()
+ (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback()
+
+ *** DMA mode IO operation ***
+ ==============================
+ [..]
+ (+) Transmit in master mode an amount of data in non-blocking mode (DMA) using
+ @ref HAL_I2C_Master_Transmit_DMA()
+ (+) At transmission end of transfer, @ref HAL_I2C_MasterTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterTxCpltCallback()
+ (+) Receive in master mode an amount of data in non-blocking mode (DMA) using
+ @ref HAL_I2C_Master_Receive_DMA()
+ (+) At reception end of transfer, @ref HAL_I2C_MasterRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MasterRxCpltCallback()
+ (+) Transmit in slave mode an amount of data in non-blocking mode (DMA) using
+ @ref HAL_I2C_Slave_Transmit_DMA()
+ (+) At transmission end of transfer, @ref HAL_I2C_SlaveTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveTxCpltCallback()
+ (+) Receive in slave mode an amount of data in non-blocking mode (DMA) using
+ @ref HAL_I2C_Slave_Receive_DMA()
+ (+) At reception end of transfer, @ref HAL_I2C_SlaveRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_SlaveRxCpltCallback()
+ (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback()
+ (+) Abort a master I2C process communication with Interrupt using @ref HAL_I2C_Master_Abort_IT()
+ (+) End of abort process, @ref HAL_I2C_AbortCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_AbortCpltCallback()
+ (+) Discard a slave I2C process communication using @ref __HAL_I2C_GENERATE_NACK() macro.
+ This action will inform Master to generate a Stop condition to discard the communication.
+
+ *** DMA mode IO MEM operation ***
+ =================================
+ [..]
+ (+) Write an amount of data in non-blocking mode with DMA to a specific memory address using
+ @ref HAL_I2C_Mem_Write_DMA()
+ (+) At Memory end of write transfer, @ref HAL_I2C_MemTxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MemTxCpltCallback()
+ (+) Read an amount of data in non-blocking mode with DMA from a specific memory address using
+ @ref HAL_I2C_Mem_Read_DMA()
+ (+) At Memory end of read transfer, @ref HAL_I2C_MemRxCpltCallback() is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_MemRxCpltCallback()
+ (+) In case of transfer Error, @ref HAL_I2C_ErrorCallback() function is executed and user can
+ add his own code by customization of function pointer @ref HAL_I2C_ErrorCallback()
+
+
+ *** I2C HAL driver macros list ***
+ ==================================
+ [..]
+ Below the list of most used macros in I2C HAL driver.
+
+ (+) @ref __HAL_I2C_ENABLE: Enable the I2C peripheral
+ (+) @ref __HAL_I2C_DISABLE: Disable the I2C peripheral
+ (+) @ref __HAL_I2C_GENERATE_NACK: Generate a Non-Acknowledge I2C peripheral in Slave mode
+ (+) @ref __HAL_I2C_GET_FLAG: Check whether the specified I2C flag is set or not
+ (+) @ref __HAL_I2C_CLEAR_FLAG: Clear the specified I2C pending flag
+ (+) @ref __HAL_I2C_ENABLE_IT: Enable the specified I2C interrupt
+ (+) @ref __HAL_I2C_DISABLE_IT: Disable the specified I2C interrupt
+
+ *** Callback registration ***
+ =============================================
+ [..]
+ The compilation flag USE_HAL_I2C_REGISTER_CALLBACKS when set to 1
+ allows the user to configure dynamically the driver callbacks.
+ Use Functions @ref HAL_I2C_RegisterCallback() or @ref HAL_I2C_RegisterAddrCallback()
+ to register an interrupt callback.
+ [..]
+ Function @ref HAL_I2C_RegisterCallback() allows to register following callbacks:
+ (+) MasterTxCpltCallback : callback for Master transmission end of transfer.
+ (+) MasterRxCpltCallback : callback for Master reception end of transfer.
+ (+) SlaveTxCpltCallback : callback for Slave transmission end of transfer.
+ (+) SlaveRxCpltCallback : callback for Slave reception end of transfer.
+ (+) ListenCpltCallback : callback for end of listen mode.
+ (+) MemTxCpltCallback : callback for Memory transmission end of transfer.
+ (+) MemRxCpltCallback : callback for Memory reception end of transfer.
+ (+) ErrorCallback : callback for error detection.
+ (+) AbortCpltCallback : callback for abort completion process.
+ (+) MspInitCallback : callback for Msp Init.
+ (+) MspDeInitCallback : callback for Msp DeInit.
+ This function takes as parameters the HAL peripheral handle, the Callback ID
+ and a pointer to the user callback function.
+ [..]
+ For specific callback AddrCallback use dedicated register callbacks : @ref HAL_I2C_RegisterAddrCallback().
+ [..]
+ Use function @ref HAL_I2C_UnRegisterCallback to reset a callback to the default
+ weak function.
+ @ref HAL_I2C_UnRegisterCallback takes as parameters the HAL peripheral handle,
+ and the Callback ID.
+ This function allows to reset following callbacks:
+ (+) MasterTxCpltCallback : callback for Master transmission end of transfer.
+ (+) MasterRxCpltCallback : callback for Master reception end of transfer.
+ (+) SlaveTxCpltCallback : callback for Slave transmission end of transfer.
+ (+) SlaveRxCpltCallback : callback for Slave reception end of transfer.
+ (+) ListenCpltCallback : callback for end of listen mode.
+ (+) MemTxCpltCallback : callback for Memory transmission end of transfer.
+ (+) MemRxCpltCallback : callback for Memory reception end of transfer.
+ (+) ErrorCallback : callback for error detection.
+ (+) AbortCpltCallback : callback for abort completion process.
+ (+) MspInitCallback : callback for Msp Init.
+ (+) MspDeInitCallback : callback for Msp DeInit.
+ [..]
+ For callback AddrCallback use dedicated register callbacks : @ref HAL_I2C_UnRegisterAddrCallback().
+ [..]
+ By default, after the @ref HAL_I2C_Init() and when the state is @ref HAL_I2C_STATE_RESET
+ all callbacks are set to the corresponding weak functions:
+ examples @ref HAL_I2C_MasterTxCpltCallback(), @ref HAL_I2C_MasterRxCpltCallback().
+ Exception done for MspInit and MspDeInit functions that are
+ reset to the legacy weak functions in the @ref HAL_I2C_Init()/ @ref HAL_I2C_DeInit() only when
+ these callbacks are null (not registered beforehand).
+ If MspInit or MspDeInit are not null, the @ref HAL_I2C_Init()/ @ref HAL_I2C_DeInit()
+ keep and use the user MspInit/MspDeInit callbacks (registered beforehand) whatever the state.
+ [..]
+ Callbacks can be registered/unregistered in @ref HAL_I2C_STATE_READY state only.
+ Exception done MspInit/MspDeInit functions that can be registered/unregistered
+ in @ref HAL_I2C_STATE_READY or @ref HAL_I2C_STATE_RESET state,
+ thus registered (user) MspInit/DeInit callbacks can be used during the Init/DeInit.
+ Then, the user first registers the MspInit/MspDeInit user callbacks
+ using @ref HAL_I2C_RegisterCallback() before calling @ref HAL_I2C_DeInit()
+ or @ref HAL_I2C_Init() function.
+ [..]
+ When the compilation flag USE_HAL_I2C_REGISTER_CALLBACKS is set to 0 or
+ not defined, the callback registration feature is not available and all callbacks
+ are set to the corresponding weak functions.
+
+ [..]
+ (@) You can refer to the I2C HAL driver header file for more useful macros
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2018 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32g0xx_hal.h"
+
+/** @addtogroup STM32G0xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup I2C I2C
+ * @brief I2C HAL module driver
+ * @{
+ */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+
+/** @defgroup I2C_Private_Define I2C Private Define
+ * @{
+ */
+#define TIMING_CLEAR_MASK (0xF0FFFFFFU) /*!< I2C TIMING clear register Mask */
+#define I2C_TIMEOUT_ADDR (10000U) /*!< 10 s */
+#define I2C_TIMEOUT_BUSY (25U) /*!< 25 ms */
+#define I2C_TIMEOUT_DIR (25U) /*!< 25 ms */
+#define I2C_TIMEOUT_RXNE (25U) /*!< 25 ms */
+#define I2C_TIMEOUT_STOPF (25U) /*!< 25 ms */
+#define I2C_TIMEOUT_TC (25U) /*!< 25 ms */
+#define I2C_TIMEOUT_TCR (25U) /*!< 25 ms */
+#define I2C_TIMEOUT_TXIS (25U) /*!< 25 ms */
+#define I2C_TIMEOUT_FLAG (25U) /*!< 25 ms */
+
+#define MAX_NBYTE_SIZE 255U
+#define SlaveAddr_SHIFT 7U
+#define SlaveAddr_MSK 0x06U
+
+/* Private define for @ref PreviousState usage */
+#define I2C_STATE_MSK ((uint32_t)((uint32_t)((uint32_t)HAL_I2C_STATE_BUSY_TX | (uint32_t)HAL_I2C_STATE_BUSY_RX) & (uint32_t)(~((uint32_t)HAL_I2C_STATE_READY)))) /*!< Mask State define, keep only RX and TX bits */
+#define I2C_STATE_NONE ((uint32_t)(HAL_I2C_MODE_NONE)) /*!< Default Value */
+#define I2C_STATE_MASTER_BUSY_TX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MASTER)) /*!< Master Busy TX, combinaison of State LSB and Mode enum */
+#define I2C_STATE_MASTER_BUSY_RX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MASTER)) /*!< Master Busy RX, combinaison of State LSB and Mode enum */
+#define I2C_STATE_SLAVE_BUSY_TX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_SLAVE)) /*!< Slave Busy TX, combinaison of State LSB and Mode enum */
+#define I2C_STATE_SLAVE_BUSY_RX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_SLAVE)) /*!< Slave Busy RX, combinaison of State LSB and Mode enum */
+#define I2C_STATE_MEM_BUSY_TX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_TX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MEM)) /*!< Memory Busy TX, combinaison of State LSB and Mode enum */
+#define I2C_STATE_MEM_BUSY_RX ((uint32_t)(((uint32_t)HAL_I2C_STATE_BUSY_RX & I2C_STATE_MSK) | (uint32_t)HAL_I2C_MODE_MEM)) /*!< Memory Busy RX, combinaison of State LSB and Mode enum */
+
+
+/* Private define to centralize the enable/disable of Interrupts */
+#define I2C_XFER_TX_IT (uint16_t)(0x0001U) /* Bit field can be combinated with @ref I2C_XFER_LISTEN_IT */
+#define I2C_XFER_RX_IT (uint16_t)(0x0002U) /* Bit field can be combinated with @ref I2C_XFER_LISTEN_IT */
+#define I2C_XFER_LISTEN_IT (uint16_t)(0x8000U) /* Bit field can be combinated with @ref I2C_XFER_TX_IT and @ref I2C_XFER_RX_IT */
+
+#define I2C_XFER_ERROR_IT (uint16_t)(0x0010U) /* Bit definition to manage addition of global Error and NACK treatment */
+#define I2C_XFER_CPLT_IT (uint16_t)(0x0020U) /* Bit definition to manage only STOP evenement */
+#define I2C_XFER_RELOAD_IT (uint16_t)(0x0040U) /* Bit definition to manage only Reload of NBYTE */
+
+/* Private define Sequential Transfer Options default/reset value */
+#define I2C_NO_OPTION_FRAME (0xFFFF0000U)
+/**
+ * @}
+ */
+
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+
+/** @defgroup I2C_Private_Functions I2C Private Functions
+ * @{
+ */
+/* Private functions to handle DMA transfer */
+static void I2C_DMAMasterTransmitCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMAMasterReceiveCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMASlaveTransmitCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMASlaveReceiveCplt(DMA_HandleTypeDef *hdma);
+static void I2C_DMAError(DMA_HandleTypeDef *hdma);
+static void I2C_DMAAbort(DMA_HandleTypeDef *hdma);
+
+/* Private functions to handle IT transfer */
+static void I2C_ITAddrCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags);
+static void I2C_ITMasterSeqCplt(I2C_HandleTypeDef *hi2c);
+static void I2C_ITSlaveSeqCplt(I2C_HandleTypeDef *hi2c);
+static void I2C_ITMasterCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags);
+static void I2C_ITSlaveCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags);
+static void I2C_ITListenCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags);
+static void I2C_ITError(I2C_HandleTypeDef *hi2c, uint32_t ErrorCode);
+
+/* Private functions to handle IT transfer */
+static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart);
+
+/* Private functions for I2C transfer IRQ handler */
+static HAL_StatusTypeDef I2C_Master_ISR_IT(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources);
+static HAL_StatusTypeDef I2C_Slave_ISR_IT(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources);
+static HAL_StatusTypeDef I2C_Master_ISR_DMA(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources);
+static HAL_StatusTypeDef I2C_Slave_ISR_DMA(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources);
+
+/* Private functions to handle flags during polling transfer */
+static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_WaitOnTXISFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart);
+static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart);
+
+/* Private functions to centralize the enable/disable of Interrupts */
+static void I2C_Enable_IRQ(I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest);
+static void I2C_Disable_IRQ(I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest);
+
+/* Private function to treat different error callback */
+static void I2C_TreatErrorCallback(I2C_HandleTypeDef *hi2c);
+
+/* Private function to flush TXDR register */
+static void I2C_Flush_TXDR(I2C_HandleTypeDef *hi2c);
+
+/* Private function to handle start, restart or stop a transfer */
+static void I2C_TransferConfig(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t Size, uint32_t Mode, uint32_t Request);
+
+/* Private function to Convert Specific options */
+static void I2C_ConvertOtherXferOptions(I2C_HandleTypeDef *hi2c);
+/**
+ * @}
+ */
+
+/* Exported functions --------------------------------------------------------*/
+
+/** @defgroup I2C_Exported_Functions I2C Exported Functions
+ * @{
+ */
+
+/** @defgroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions
+ * @brief Initialization and Configuration functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Initialization and de-initialization functions #####
+ ===============================================================================
+ [..] This subsection provides a set of functions allowing to initialize and
+ deinitialize the I2Cx peripheral:
+
+ (+) User must Implement HAL_I2C_MspInit() function in which he configures
+ all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC ).
+
+ (+) Call the function HAL_I2C_Init() to configure the selected device with
+ the selected configuration:
+ (++) Clock Timing
+ (++) Own Address 1
+ (++) Addressing mode (Master, Slave)
+ (++) Dual Addressing mode
+ (++) Own Address 2
+ (++) Own Address 2 Mask
+ (++) General call mode
+ (++) Nostretch mode
+
+ (+) Call the function HAL_I2C_DeInit() to restore the default configuration
+ of the selected I2Cx peripheral.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Initializes the I2C according to the specified parameters
+ * in the I2C_InitTypeDef and initialize the associated handle.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c)
+{
+ /* Check the I2C handle allocation */
+ if (hi2c == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+ assert_param(IS_I2C_OWN_ADDRESS1(hi2c->Init.OwnAddress1));
+ assert_param(IS_I2C_ADDRESSING_MODE(hi2c->Init.AddressingMode));
+ assert_param(IS_I2C_DUAL_ADDRESS(hi2c->Init.DualAddressMode));
+ assert_param(IS_I2C_OWN_ADDRESS2(hi2c->Init.OwnAddress2));
+ assert_param(IS_I2C_OWN_ADDRESS2_MASK(hi2c->Init.OwnAddress2Masks));
+ assert_param(IS_I2C_GENERAL_CALL(hi2c->Init.GeneralCallMode));
+ assert_param(IS_I2C_NO_STRETCH(hi2c->Init.NoStretchMode));
+
+ if (hi2c->State == HAL_I2C_STATE_RESET)
+ {
+ /* Allocate lock resource and initialize it */
+ hi2c->Lock = HAL_UNLOCKED;
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ /* Init the I2C Callback settings */
+ hi2c->MasterTxCpltCallback = HAL_I2C_MasterTxCpltCallback; /* Legacy weak MasterTxCpltCallback */
+ hi2c->MasterRxCpltCallback = HAL_I2C_MasterRxCpltCallback; /* Legacy weak MasterRxCpltCallback */
+ hi2c->SlaveTxCpltCallback = HAL_I2C_SlaveTxCpltCallback; /* Legacy weak SlaveTxCpltCallback */
+ hi2c->SlaveRxCpltCallback = HAL_I2C_SlaveRxCpltCallback; /* Legacy weak SlaveRxCpltCallback */
+ hi2c->ListenCpltCallback = HAL_I2C_ListenCpltCallback; /* Legacy weak ListenCpltCallback */
+ hi2c->MemTxCpltCallback = HAL_I2C_MemTxCpltCallback; /* Legacy weak MemTxCpltCallback */
+ hi2c->MemRxCpltCallback = HAL_I2C_MemRxCpltCallback; /* Legacy weak MemRxCpltCallback */
+ hi2c->ErrorCallback = HAL_I2C_ErrorCallback; /* Legacy weak ErrorCallback */
+ hi2c->AbortCpltCallback = HAL_I2C_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
+ hi2c->AddrCallback = HAL_I2C_AddrCallback; /* Legacy weak AddrCallback */
+
+ if (hi2c->MspInitCallback == NULL)
+ {
+ hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */
+ }
+
+ /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */
+ hi2c->MspInitCallback(hi2c);
+#else
+ /* Init the low level hardware : GPIO, CLOCK, CORTEX...etc */
+ HAL_I2C_MspInit(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the selected I2C peripheral */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /*---------------------------- I2Cx TIMINGR Configuration ------------------*/
+ /* Configure I2Cx: Frequency range */
+ hi2c->Instance->TIMINGR = hi2c->Init.Timing & TIMING_CLEAR_MASK;
+
+ /*---------------------------- I2Cx OAR1 Configuration ---------------------*/
+ /* Disable Own Address1 before set the Own Address1 configuration */
+ hi2c->Instance->OAR1 &= ~I2C_OAR1_OA1EN;
+
+ /* Configure I2Cx: Own Address1 and ack own address1 mode */
+ if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
+ {
+ hi2c->Instance->OAR1 = (I2C_OAR1_OA1EN | hi2c->Init.OwnAddress1);
+ }
+ else /* I2C_ADDRESSINGMODE_10BIT */
+ {
+ hi2c->Instance->OAR1 = (I2C_OAR1_OA1EN | I2C_OAR1_OA1MODE | hi2c->Init.OwnAddress1);
+ }
+
+ /*---------------------------- I2Cx CR2 Configuration ----------------------*/
+ /* Configure I2Cx: Addressing Master mode */
+ if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT)
+ {
+ hi2c->Instance->CR2 = (I2C_CR2_ADD10);
+ }
+ /* Enable the AUTOEND by default, and enable NACK (should be disable only during Slave process */
+ hi2c->Instance->CR2 |= (I2C_CR2_AUTOEND | I2C_CR2_NACK);
+
+ /*---------------------------- I2Cx OAR2 Configuration ---------------------*/
+ /* Disable Own Address2 before set the Own Address2 configuration */
+ hi2c->Instance->OAR2 &= ~I2C_DUALADDRESS_ENABLE;
+
+ /* Configure I2Cx: Dual mode and Own Address2 */
+ hi2c->Instance->OAR2 = (hi2c->Init.DualAddressMode | hi2c->Init.OwnAddress2 | (hi2c->Init.OwnAddress2Masks << 8));
+
+ /*---------------------------- I2Cx CR1 Configuration ----------------------*/
+ /* Configure I2Cx: Generalcall and NoStretch mode */
+ hi2c->Instance->CR1 = (hi2c->Init.GeneralCallMode | hi2c->Init.NoStretchMode);
+
+ /* Enable the selected I2C peripheral */
+ __HAL_I2C_ENABLE(hi2c);
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ return HAL_OK;
+}
+
+/**
+ * @brief DeInitialize the I2C peripheral.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c)
+{
+ /* Check the I2C handle allocation */
+ if (hi2c == NULL)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the I2C Peripheral Clock */
+ __HAL_I2C_DISABLE(hi2c);
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ if (hi2c->MspDeInitCallback == NULL)
+ {
+ hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */
+ }
+
+ /* DeInit the low level hardware: GPIO, CLOCK, NVIC */
+ hi2c->MspDeInitCallback(hi2c);
+#else
+ /* DeInit the low level hardware: GPIO, CLOCK, NVIC */
+ HAL_I2C_MspDeInit(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ hi2c->State = HAL_I2C_STATE_RESET;
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Initialize the I2C MSP.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MspInit could be implemented in the user file
+ */
+}
+
+/**
+ * @brief DeInitialize the I2C MSP.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MspDeInit could be implemented in the user file
+ */
+}
+
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+/**
+ * @brief Register a User I2C Callback
+ * To be used instead of the weak predefined callback
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param CallbackID ID of the callback to be registered
+ * This parameter can be one of the following values:
+ * @arg @ref HAL_I2C_MASTER_TX_COMPLETE_CB_ID Master Tx Transfer completed callback ID
+ * @arg @ref HAL_I2C_MASTER_RX_COMPLETE_CB_ID Master Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_SLAVE_TX_COMPLETE_CB_ID Slave Tx Transfer completed callback ID
+ * @arg @ref HAL_I2C_SLAVE_RX_COMPLETE_CB_ID Slave Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_LISTEN_COMPLETE_CB_ID Listen Complete callback ID
+ * @arg @ref HAL_I2C_MEM_TX_COMPLETE_CB_ID Memory Tx Transfer callback ID
+ * @arg @ref HAL_I2C_MEM_RX_COMPLETE_CB_ID Memory Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_ERROR_CB_ID Error callback ID
+ * @arg @ref HAL_I2C_ABORT_CB_ID Abort callback ID
+ * @arg @ref HAL_I2C_MSPINIT_CB_ID MspInit callback ID
+ * @arg @ref HAL_I2C_MSPDEINIT_CB_ID MspDeInit callback ID
+ * @param pCallback pointer to the Callback function
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_RegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID, pI2C_CallbackTypeDef pCallback)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if (pCallback == NULL)
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ return HAL_ERROR;
+ }
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ if (HAL_I2C_STATE_READY == hi2c->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2C_MASTER_TX_COMPLETE_CB_ID :
+ hi2c->MasterTxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_MASTER_RX_COMPLETE_CB_ID :
+ hi2c->MasterRxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_SLAVE_TX_COMPLETE_CB_ID :
+ hi2c->SlaveTxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_SLAVE_RX_COMPLETE_CB_ID :
+ hi2c->SlaveRxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_LISTEN_COMPLETE_CB_ID :
+ hi2c->ListenCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_MEM_TX_COMPLETE_CB_ID :
+ hi2c->MemTxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_MEM_RX_COMPLETE_CB_ID :
+ hi2c->MemRxCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_ERROR_CB_ID :
+ hi2c->ErrorCallback = pCallback;
+ break;
+
+ case HAL_I2C_ABORT_CB_ID :
+ hi2c->AbortCpltCallback = pCallback;
+ break;
+
+ case HAL_I2C_MSPINIT_CB_ID :
+ hi2c->MspInitCallback = pCallback;
+ break;
+
+ case HAL_I2C_MSPDEINIT_CB_ID :
+ hi2c->MspDeInitCallback = pCallback;
+ break;
+
+ default :
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else if (HAL_I2C_STATE_RESET == hi2c->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2C_MSPINIT_CB_ID :
+ hi2c->MspInitCallback = pCallback;
+ break;
+
+ case HAL_I2C_MSPDEINIT_CB_ID :
+ hi2c->MspDeInitCallback = pCallback;
+ break;
+
+ default :
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ }
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+ return status;
+}
+
+/**
+ * @brief Unregister an I2C Callback
+ * I2C callback is redirected to the weak predefined callback
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param CallbackID ID of the callback to be unregistered
+ * This parameter can be one of the following values:
+ * This parameter can be one of the following values:
+ * @arg @ref HAL_I2C_MASTER_TX_COMPLETE_CB_ID Master Tx Transfer completed callback ID
+ * @arg @ref HAL_I2C_MASTER_RX_COMPLETE_CB_ID Master Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_SLAVE_TX_COMPLETE_CB_ID Slave Tx Transfer completed callback ID
+ * @arg @ref HAL_I2C_SLAVE_RX_COMPLETE_CB_ID Slave Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_LISTEN_COMPLETE_CB_ID Listen Complete callback ID
+ * @arg @ref HAL_I2C_MEM_TX_COMPLETE_CB_ID Memory Tx Transfer callback ID
+ * @arg @ref HAL_I2C_MEM_RX_COMPLETE_CB_ID Memory Rx Transfer completed callback ID
+ * @arg @ref HAL_I2C_ERROR_CB_ID Error callback ID
+ * @arg @ref HAL_I2C_ABORT_CB_ID Abort callback ID
+ * @arg @ref HAL_I2C_MSPINIT_CB_ID MspInit callback ID
+ * @arg @ref HAL_I2C_MSPDEINIT_CB_ID MspDeInit callback ID
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_UnRegisterCallback(I2C_HandleTypeDef *hi2c, HAL_I2C_CallbackIDTypeDef CallbackID)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ if (HAL_I2C_STATE_READY == hi2c->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2C_MASTER_TX_COMPLETE_CB_ID :
+ hi2c->MasterTxCpltCallback = HAL_I2C_MasterTxCpltCallback; /* Legacy weak MasterTxCpltCallback */
+ break;
+
+ case HAL_I2C_MASTER_RX_COMPLETE_CB_ID :
+ hi2c->MasterRxCpltCallback = HAL_I2C_MasterRxCpltCallback; /* Legacy weak MasterRxCpltCallback */
+ break;
+
+ case HAL_I2C_SLAVE_TX_COMPLETE_CB_ID :
+ hi2c->SlaveTxCpltCallback = HAL_I2C_SlaveTxCpltCallback; /* Legacy weak SlaveTxCpltCallback */
+ break;
+
+ case HAL_I2C_SLAVE_RX_COMPLETE_CB_ID :
+ hi2c->SlaveRxCpltCallback = HAL_I2C_SlaveRxCpltCallback; /* Legacy weak SlaveRxCpltCallback */
+ break;
+
+ case HAL_I2C_LISTEN_COMPLETE_CB_ID :
+ hi2c->ListenCpltCallback = HAL_I2C_ListenCpltCallback; /* Legacy weak ListenCpltCallback */
+ break;
+
+ case HAL_I2C_MEM_TX_COMPLETE_CB_ID :
+ hi2c->MemTxCpltCallback = HAL_I2C_MemTxCpltCallback; /* Legacy weak MemTxCpltCallback */
+ break;
+
+ case HAL_I2C_MEM_RX_COMPLETE_CB_ID :
+ hi2c->MemRxCpltCallback = HAL_I2C_MemRxCpltCallback; /* Legacy weak MemRxCpltCallback */
+ break;
+
+ case HAL_I2C_ERROR_CB_ID :
+ hi2c->ErrorCallback = HAL_I2C_ErrorCallback; /* Legacy weak ErrorCallback */
+ break;
+
+ case HAL_I2C_ABORT_CB_ID :
+ hi2c->AbortCpltCallback = HAL_I2C_AbortCpltCallback; /* Legacy weak AbortCpltCallback */
+ break;
+
+ case HAL_I2C_MSPINIT_CB_ID :
+ hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */
+ break;
+
+ case HAL_I2C_MSPDEINIT_CB_ID :
+ hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */
+ break;
+
+ default :
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else if (HAL_I2C_STATE_RESET == hi2c->State)
+ {
+ switch (CallbackID)
+ {
+ case HAL_I2C_MSPINIT_CB_ID :
+ hi2c->MspInitCallback = HAL_I2C_MspInit; /* Legacy weak MspInit */
+ break;
+
+ case HAL_I2C_MSPDEINIT_CB_ID :
+ hi2c->MspDeInitCallback = HAL_I2C_MspDeInit; /* Legacy weak MspDeInit */
+ break;
+
+ default :
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ break;
+ }
+ }
+ else
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ }
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+ return status;
+}
+
+/**
+ * @brief Register the Slave Address Match I2C Callback
+ * To be used instead of the weak HAL_I2C_AddrCallback() predefined callback
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pCallback pointer to the Address Match Callback function
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_RegisterAddrCallback(I2C_HandleTypeDef *hi2c, pI2C_AddrCallbackTypeDef pCallback)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ if (pCallback == NULL)
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ return HAL_ERROR;
+ }
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ if (HAL_I2C_STATE_READY == hi2c->State)
+ {
+ hi2c->AddrCallback = pCallback;
+ }
+ else
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ }
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+ return status;
+}
+
+/**
+ * @brief UnRegister the Slave Address Match I2C Callback
+ * Info Ready I2C Callback is redirected to the weak HAL_I2C_AddrCallback() predefined callback
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_UnRegisterAddrCallback(I2C_HandleTypeDef *hi2c)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ if (HAL_I2C_STATE_READY == hi2c->State)
+ {
+ hi2c->AddrCallback = HAL_I2C_AddrCallback; /* Legacy weak AddrCallback */
+ }
+ else
+ {
+ /* Update the error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_INVALID_CALLBACK;
+
+ /* Return error status */
+ status = HAL_ERROR;
+ }
+
+ /* Release Lock */
+ __HAL_UNLOCK(hi2c);
+ return status;
+}
+
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_Exported_Functions_Group2 Input and Output operation functions
+ * @brief Data transfers functions
+ *
+@verbatim
+ ===============================================================================
+ ##### IO operation functions #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to manage the I2C data
+ transfers.
+
+ (#) There are two modes of transfer:
+ (++) Blocking mode : The communication is performed in the polling mode.
+ The status of all data processing is returned by the same function
+ after finishing transfer.
+ (++) No-Blocking mode : The communication is performed using Interrupts
+ or DMA. These functions return the status of the transfer startup.
+ The end of the data processing will be indicated through the
+ dedicated I2C IRQ when using Interrupt mode or the DMA IRQ when
+ using DMA mode.
+
+ (#) Blocking mode functions are :
+ (++) HAL_I2C_Master_Transmit()
+ (++) HAL_I2C_Master_Receive()
+ (++) HAL_I2C_Slave_Transmit()
+ (++) HAL_I2C_Slave_Receive()
+ (++) HAL_I2C_Mem_Write()
+ (++) HAL_I2C_Mem_Read()
+ (++) HAL_I2C_IsDeviceReady()
+
+ (#) No-Blocking mode functions with Interrupt are :
+ (++) HAL_I2C_Master_Transmit_IT()
+ (++) HAL_I2C_Master_Receive_IT()
+ (++) HAL_I2C_Slave_Transmit_IT()
+ (++) HAL_I2C_Slave_Receive_IT()
+ (++) HAL_I2C_Mem_Write_IT()
+ (++) HAL_I2C_Mem_Read_IT()
+ (++) HAL_I2C_Master_Seq_Transmit_IT()
+ (++) HAL_I2C_Master_Seq_Receive_IT()
+ (++) HAL_I2C_Slave_Seq_Transmit_IT()
+ (++) HAL_I2C_Slave_Seq_Receive_IT()
+ (++) HAL_I2C_EnableListen_IT()
+ (++) HAL_I2C_DisableListen_IT()
+ (++) HAL_I2C_Master_Abort_IT()
+
+ (#) No-Blocking mode functions with DMA are :
+ (++) HAL_I2C_Master_Transmit_DMA()
+ (++) HAL_I2C_Master_Receive_DMA()
+ (++) HAL_I2C_Slave_Transmit_DMA()
+ (++) HAL_I2C_Slave_Receive_DMA()
+ (++) HAL_I2C_Mem_Write_DMA()
+ (++) HAL_I2C_Mem_Read_DMA()
+ (++) HAL_I2C_Master_Seq_Transmit_DMA()
+ (++) HAL_I2C_Master_Seq_Receive_DMA()
+ (++) HAL_I2C_Slave_Seq_Transmit_DMA()
+ (++) HAL_I2C_Slave_Seq_Receive_DMA()
+
+ (#) A set of Transfer Complete Callbacks are provided in non Blocking mode:
+ (++) HAL_I2C_MasterTxCpltCallback()
+ (++) HAL_I2C_MasterRxCpltCallback()
+ (++) HAL_I2C_SlaveTxCpltCallback()
+ (++) HAL_I2C_SlaveRxCpltCallback()
+ (++) HAL_I2C_MemTxCpltCallback()
+ (++) HAL_I2C_MemRxCpltCallback()
+ (++) HAL_I2C_AddrCallback()
+ (++) HAL_I2C_ListenCpltCallback()
+ (++) HAL_I2C_ErrorCallback()
+ (++) HAL_I2C_AbortCpltCallback()
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Transmits in master mode an amount of data in blocking mode.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t tickstart;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Init tickstart for timeout management*/
+ tickstart = HAL_GetTick();
+
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferISR = NULL;
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE);
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE);
+ }
+
+ while (hi2c->XferCount > 0U)
+ {
+ /* Wait until TXIS flag is set */
+ if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+ /* Write data to TXDR */
+ hi2c->Instance->TXDR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferCount--;
+ hi2c->XferSize--;
+
+ if ((hi2c->XferCount != 0U) && (hi2c->XferSize == 0U))
+ {
+ /* Wait until TCR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+ }
+ }
+
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is set */
+ if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ I2C_RESET_CR2(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receives in master mode an amount of data in blocking mode.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t tickstart;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Init tickstart for timeout management*/
+ tickstart = HAL_GetTick();
+
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferISR = NULL;
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_READ);
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ);
+ }
+
+ while (hi2c->XferCount > 0U)
+ {
+ /* Wait until RXNE flag is set */
+ if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Read data from RXDR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ if ((hi2c->XferCount != 0U) && (hi2c->XferSize == 0U))
+ {
+ /* Wait until TCR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+ }
+ }
+
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is set */
+ if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ I2C_RESET_CR2(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmits in slave mode an amount of data in blocking mode.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t tickstart;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Init tickstart for timeout management*/
+ tickstart = HAL_GetTick();
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferISR = NULL;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+
+ /* If 10bit addressing mode is selected */
+ if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT)
+ {
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+ }
+
+ /* Wait until DIR flag is set Transmitter mode */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_DIR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_ERROR;
+ }
+
+ while (hi2c->XferCount > 0U)
+ {
+ /* Wait until TXIS flag is set */
+ if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_ERROR;
+ }
+
+ /* Write data to TXDR */
+ hi2c->Instance->TXDR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferCount--;
+ }
+
+ /* Wait until STOP flag is set */
+ if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ if (hi2c->ErrorCode == HAL_I2C_ERROR_AF)
+ {
+ /* Normal use case for Transmitter mode */
+ /* A NACK is generated to confirm the end of transfer */
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+ }
+
+ /* Clear STOP flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Wait until BUSY flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_ERROR;
+ }
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in slave mode an amount of data in blocking mode
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t tickstart;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Init tickstart for timeout management*/
+ tickstart = HAL_GetTick();
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferISR = NULL;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Wait until ADDR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_ERROR;
+ }
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+
+ /* Wait until DIR flag is reset Receiver mode */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_DIR, SET, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_ERROR;
+ }
+
+ while (hi2c->XferCount > 0U)
+ {
+ /* Wait until RXNE flag is set */
+ if (I2C_WaitOnRXNEFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ /* Store Last receive data if any */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET)
+ {
+ /* Read data from RXDR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferCount--;
+ }
+
+ return HAL_ERROR;
+ }
+
+ /* Read data from RXDR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferCount--;
+ }
+
+ /* Wait until STOP flag is set */
+ if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_ERROR;
+ }
+
+ /* Clear STOP flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Wait until BUSY flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, Timeout, tickstart) != HAL_OK)
+ {
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+ return HAL_ERROR;
+ }
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in master mode an amount of data in non-blocking mode with Interrupt
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
+{
+ uint32_t xfermode;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Master_ISR_IT;
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = I2C_AUTOEND_MODE;
+ }
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_WRITE);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable ERR, TC, STOP, NACK, TXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in master mode an amount of data in non-blocking mode with Interrupt
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
+{
+ uint32_t xfermode;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Master_ISR_IT;
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = I2C_AUTOEND_MODE;
+ }
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_READ);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable ERR, TC, STOP, NACK, RXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in slave mode an amount of data in non-blocking mode with Interrupt
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Slave_ISR_IT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable ERR, TC, STOP, NACK, TXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT | I2C_XFER_LISTEN_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in slave mode an amount of data in non-blocking mode with Interrupt
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Slave_ISR_IT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable ERR, TC, STOP, NACK, RXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT | I2C_XFER_LISTEN_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in master mode an amount of data in non-blocking mode with DMA
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
+{
+ uint32_t xfermode;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Master_ISR_DMA;
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = I2C_AUTOEND_MODE;
+ }
+
+ if (hi2c->XferSize > 0U)
+ {
+ if (hi2c->hdmatx != NULL)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMAMasterTransmitCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmatx->XferHalfCpltCallback = NULL;
+ hi2c->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_WRITE);
+
+ /* Update XferCount value */
+ hi2c->XferCount -= hi2c->XferSize;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR and NACK interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Update Transfer ISR function pointer */
+ hi2c->XferISR = I2C_Master_ISR_IT;
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and generate START condition */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR, TC, STOP, NACK, TXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT);
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in master mode an amount of data in non-blocking mode with DMA
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
+{
+ uint32_t xfermode;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Master_ISR_DMA;
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = I2C_AUTOEND_MODE;
+ }
+
+ if (hi2c->XferSize > 0U)
+ {
+ if (hi2c->hdmarx != NULL)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMAMasterReceiveCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmarx->XferHalfCpltCallback = NULL;
+ hi2c->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Send Slave Address */
+ /* Set NBYTES to read and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_READ);
+
+ /* Update XferCount value */
+ hi2c->XferCount -= hi2c->XferSize;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR and NACK interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Update Transfer ISR function pointer */
+ hi2c->XferISR = I2C_Master_ISR_IT;
+
+ /* Send Slave Address */
+ /* Set NBYTES to read and generate START condition */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR, TC, STOP, NACK, TXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT);
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Transmit in slave mode an amount of data in non-blocking mode with DMA
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+ HAL_StatusTypeDef dmaxferstatus;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Slave_ISR_DMA;
+
+ if (hi2c->hdmatx != NULL)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMASlaveTransmitCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmatx->XferHalfCpltCallback = NULL;
+ hi2c->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR, STOP, NACK, ADDR interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_LISTEN_IT);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Receive in slave mode an amount of data in non-blocking mode with DMA
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
+{
+ HAL_StatusTypeDef dmaxferstatus;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Slave_ISR_DMA;
+
+ if (hi2c->hdmarx != NULL)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMASlaveReceiveCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmarx->XferHalfCpltCallback = NULL;
+ hi2c->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR, STOP, NACK, ADDR interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_LISTEN_IT);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @brief Write an amount of data in blocking mode to a specific memory address
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t tickstart;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Init tickstart for timeout management*/
+ tickstart = HAL_GetTick();
+
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferISR = NULL;
+
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+
+ do
+ {
+ /* Wait until TXIS flag is set */
+ if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Write data to TXDR */
+ hi2c->Instance->TXDR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferCount--;
+ hi2c->XferSize--;
+
+ if ((hi2c->XferCount != 0U) && (hi2c->XferSize == 0U))
+ {
+ /* Wait until TCR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+ }
+
+ }
+ while (hi2c->XferCount > 0U);
+
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ I2C_RESET_CR2(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Read an amount of data in blocking mode from a specific memory address
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
+{
+ uint32_t tickstart;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Init tickstart for timeout management*/
+ tickstart = HAL_GetTick();
+
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferISR = NULL;
+
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, Timeout, tickstart) != HAL_OK)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_GENERATE_START_READ);
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ);
+ }
+
+ do
+ {
+ /* Wait until RXNE flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Read data from RXDR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ if ((hi2c->XferCount != 0U) && (hi2c->XferSize == 0U))
+ {
+ /* Wait until TCR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t) hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+ }
+ }
+ while (hi2c->XferCount > 0U);
+
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is reset */
+ if (I2C_WaitOnSTOPFlagUntilTimeout(hi2c, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ I2C_RESET_CR2(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @brief Write an amount of data in non-blocking mode with Interrupt to a specific memory address
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ uint32_t tickstart;
+ uint32_t xfermode;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Init tickstart for timeout management*/
+ tickstart = HAL_GetTick();
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Master_ISR_IT;
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = I2C_AUTOEND_MODE;
+ }
+
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_NO_STARTSTOP);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable ERR, TC, STOP, NACK, TXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Read an amount of data in non-blocking mode with Interrupt from a specific memory address
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ uint32_t tickstart;
+ uint32_t xfermode;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Init tickstart for timeout management*/
+ tickstart = HAL_GetTick();
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Master_ISR_IT;
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = I2C_AUTOEND_MODE;
+ }
+
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_READ);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+
+ /* Enable ERR, TC, STOP, NACK, RXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+/**
+ * @brief Write an amount of data in non-blocking mode with DMA to a specific memory address
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ uint32_t tickstart;
+ uint32_t xfermode;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Init tickstart for timeout management*/
+ tickstart = HAL_GetTick();
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Master_ISR_DMA;
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = I2C_AUTOEND_MODE;
+ }
+
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+
+
+ if (hi2c->hdmatx != NULL)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMAMasterTransmitCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmatx->XferHalfCpltCallback = NULL;
+ hi2c->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Send Slave Address */
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_NO_STARTSTOP);
+
+ /* Update XferCount value */
+ hi2c->XferCount -= hi2c->XferSize;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR and NACK interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Reads an amount of data in non-blocking mode with DMA from a specific memory address.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be read
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
+{
+ uint32_t tickstart;
+ uint32_t xfermode;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Init tickstart for timeout management*/
+ tickstart = HAL_GetTick();
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MEM;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferISR = I2C_Master_ISR_DMA;
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = I2C_AUTOEND_MODE;
+ }
+
+ /* Send Slave Address and Memory Address */
+ if (I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG, tickstart) != HAL_OK)
+ {
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+
+ if (hi2c->hdmarx != NULL)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMAMasterReceiveCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmarx->XferHalfCpltCallback = NULL;
+ hi2c->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Set NBYTES to write and reload if hi2c->XferCount > MAX_NBYTE_SIZE and generate RESTART */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, I2C_GENERATE_START_READ);
+
+ /* Update XferCount value */
+ hi2c->XferCount -= hi2c->XferSize;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR and NACK interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Checks if target device is ready for communication.
+ * @note This function is used with Memory devices
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param Trials Number of trials
+ * @param Timeout Timeout duration
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout)
+{
+ uint32_t tickstart;
+
+ __IO uint32_t I2C_Trials = 0UL;
+
+ FlagStatus tmp1;
+ FlagStatus tmp2;
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BUSY) == SET)
+ {
+ return HAL_BUSY;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ do
+ {
+ /* Generate Start */
+ hi2c->Instance->CR2 = I2C_GENERATE_START(hi2c->Init.AddressingMode, DevAddress);
+
+ /* No need to Check TC flag, with AUTOEND mode the stop is automatically generated */
+ /* Wait until STOPF flag is set or a NACK flag is set*/
+ tickstart = HAL_GetTick();
+
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF);
+ tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF);
+
+ while ((tmp1 == RESET) && (tmp2 == RESET))
+ {
+ if (Timeout != HAL_MAX_DELAY)
+ {
+ if (((HAL_GetTick() - tickstart) > Timeout) || (Timeout == 0U))
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+
+ tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF);
+ tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF);
+ }
+
+ /* Check if the NACKF flag has not been set */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == RESET)
+ {
+ /* Wait until STOPF flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Device is ready */
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Wait until STOPF flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Clear STOP Flag, auto generated with autoend*/
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+ }
+
+ /* Check if the maximum allowed number of trials has been reached */
+ if (I2C_Trials == Trials)
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR2 |= I2C_CR2_STOP;
+
+ /* Wait until STOPF flag is reset */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout, tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+ }
+
+ /* Increment Trials */
+ I2C_Trials++;
+ }
+ while (I2C_Trials < Trials);
+
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential transmit in master I2C mode an amount of data in non-blocking mode with Interrupt.
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ uint32_t xfermode;
+ uint32_t xferrequest = I2C_GENERATE_START_WRITE;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = XferOptions;
+ hi2c->XferISR = I2C_Master_ISR_IT;
+
+ /* If hi2c->XferCount > MAX_NBYTE_SIZE, use reload mode */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = hi2c->XferOptions;
+ }
+
+ /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if ((hi2c->PreviousState == I2C_STATE_MASTER_BUSY_TX) && (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 0))
+ {
+ xferrequest = I2C_NO_STARTSTOP;
+ }
+ else
+ {
+ /* Convert OTHER_xxx XferOptions if any */
+ I2C_ConvertOtherXferOptions(hi2c);
+
+ /* Update xfermode accordingly if no reload is necessary */
+ if (hi2c->XferCount <= MAX_NBYTE_SIZE)
+ {
+ xfermode = hi2c->XferOptions;
+ }
+ }
+
+ /* Send Slave Address and set NBYTES to write */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, xferrequest);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential transmit in master I2C mode an amount of data in non-blocking mode with DMA.
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ uint32_t xfermode;
+ uint32_t xferrequest = I2C_GENERATE_START_WRITE;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = XferOptions;
+ hi2c->XferISR = I2C_Master_ISR_DMA;
+
+ /* If hi2c->XferCount > MAX_NBYTE_SIZE, use reload mode */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = hi2c->XferOptions;
+ }
+
+ /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if ((hi2c->PreviousState == I2C_STATE_MASTER_BUSY_TX) && (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 0))
+ {
+ xferrequest = I2C_NO_STARTSTOP;
+ }
+ else
+ {
+ /* Convert OTHER_xxx XferOptions if any */
+ I2C_ConvertOtherXferOptions(hi2c);
+
+ /* Update xfermode accordingly if no reload is necessary */
+ if (hi2c->XferCount <= MAX_NBYTE_SIZE)
+ {
+ xfermode = hi2c->XferOptions;
+ }
+ }
+
+ if (hi2c->XferSize > 0U)
+ {
+ if (hi2c->hdmatx != NULL)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMAMasterTransmitCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmatx->XferHalfCpltCallback = NULL;
+ hi2c->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Send Slave Address and set NBYTES to write */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, xferrequest);
+
+ /* Update XferCount value */
+ hi2c->XferCount -= hi2c->XferSize;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR and NACK interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Update Transfer ISR function pointer */
+ hi2c->XferISR = I2C_Master_ISR_IT;
+
+ /* Send Slave Address */
+ /* Set NBYTES to write and generate START condition */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_WRITE);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR, TC, STOP, NACK, TXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT);
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential receive in master I2C mode an amount of data in non-blocking mode with Interrupt
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ uint32_t xfermode;
+ uint32_t xferrequest = I2C_GENERATE_START_READ;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = XferOptions;
+ hi2c->XferISR = I2C_Master_ISR_IT;
+
+ /* If hi2c->XferCount > MAX_NBYTE_SIZE, use reload mode */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = hi2c->XferOptions;
+ }
+
+ /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if ((hi2c->PreviousState == I2C_STATE_MASTER_BUSY_RX) && (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 0))
+ {
+ xferrequest = I2C_NO_STARTSTOP;
+ }
+ else
+ {
+ /* Convert OTHER_xxx XferOptions if any */
+ I2C_ConvertOtherXferOptions(hi2c);
+
+ /* Update xfermode accordingly if no reload is necessary */
+ if (hi2c->XferCount <= MAX_NBYTE_SIZE)
+ {
+ xfermode = hi2c->XferOptions;
+ }
+ }
+
+ /* Send Slave Address and set NBYTES to read */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, xferrequest);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential receive in master I2C mode an amount of data in non-blocking mode with DMA
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ uint32_t xfermode;
+ uint32_t xferrequest = I2C_GENERATE_START_READ;
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX;
+ hi2c->Mode = HAL_I2C_MODE_MASTER;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferOptions = XferOptions;
+ hi2c->XferISR = I2C_Master_ISR_DMA;
+
+ /* If hi2c->XferCount > MAX_NBYTE_SIZE, use reload mode */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ xfermode = hi2c->XferOptions;
+ }
+
+ /* If transfer direction not change and there is no request to start another frame, do not generate Restart Condition */
+ /* Mean Previous state is same as current state */
+ if ((hi2c->PreviousState == I2C_STATE_MASTER_BUSY_RX) && (IS_I2C_TRANSFER_OTHER_OPTIONS_REQUEST(XferOptions) == 0))
+ {
+ xferrequest = I2C_NO_STARTSTOP;
+ }
+ else
+ {
+ /* Convert OTHER_xxx XferOptions if any */
+ I2C_ConvertOtherXferOptions(hi2c);
+
+ /* Update xfermode accordingly if no reload is necessary */
+ if (hi2c->XferCount <= MAX_NBYTE_SIZE)
+ {
+ xfermode = hi2c->XferOptions;
+ }
+ }
+
+ if (hi2c->XferSize > 0U)
+ {
+ if (hi2c->hdmarx != NULL)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMAMasterReceiveCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmarx->XferHalfCpltCallback = NULL;
+ hi2c->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Send Slave Address and set NBYTES to read */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, xfermode, xferrequest);
+
+ /* Update XferCount value */
+ hi2c->XferCount -= hi2c->XferSize;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR and NACK interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_ERROR_IT);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ else
+ {
+ /* Update Transfer ISR function pointer */
+ hi2c->XferISR = I2C_Master_ISR_IT;
+
+ /* Send Slave Address */
+ /* Set NBYTES to read and generate START condition */
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_GENERATE_START_READ);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR, TC, STOP, NACK, TXI interrupt */
+ /* possible to enable all of these */
+ /* I2C_IT_ERRI | I2C_IT_TCI| I2C_IT_STOPI| I2C_IT_NACKI | I2C_IT_ADDRI | I2C_IT_RXI | I2C_IT_TXI */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT);
+ }
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Sequential transmit in slave/device I2C mode an amount of data in non-blocking mode with Interrupt
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+
+ /* Disable Interrupts, to prevent preemption during treatment in case of multicall */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_TX_IT);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* I2C cannot manage full duplex exchange so disable previous IT enabled if any */
+ /* and then toggle the HAL slave RX state to TX state */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN)
+ {
+ /* Disable associated Interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT);
+
+ /* Abort DMA Xfer if any */
+ if ((hi2c->Instance->CR1 & I2C_CR1_RXDMAEN) == I2C_CR1_RXDMAEN)
+ {
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ if (hi2c->hdmarx != NULL)
+ {
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA RX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx);
+ }
+ }
+ }
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+ hi2c->XferISR = I2C_Slave_ISR_IT;
+
+ if (I2C_GET_DIR(hi2c) == I2C_DIRECTION_RECEIVE)
+ {
+ /* Clear ADDR flag after prepare the transfer parameters */
+ /* This action will generate an acknowledge to the Master */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* REnable ADDR interrupt */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_TX_IT | I2C_XFER_LISTEN_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+}
+
+/**
+ * @brief Sequential transmit in slave/device I2C mode an amount of data in non-blocking mode with DMA
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Interrupts, to prevent preemption during treatment in case of multicall */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_TX_IT);
+
+ /* I2C cannot manage full duplex exchange so disable previous IT enabled if any */
+ /* and then toggle the HAL slave RX state to TX state */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN)
+ {
+ /* Disable associated Interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT);
+
+ if ((hi2c->Instance->CR1 & I2C_CR1_RXDMAEN) == I2C_CR1_RXDMAEN)
+ {
+ /* Abort DMA Xfer if any */
+ if (hi2c->hdmarx != NULL)
+ {
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA RX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx);
+ }
+ }
+ }
+ }
+ else if (hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN)
+ {
+ if ((hi2c->Instance->CR1 & I2C_CR1_TXDMAEN) == I2C_CR1_TXDMAEN)
+ {
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ /* Abort DMA Xfer if any */
+ if (hi2c->hdmatx != NULL)
+ {
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA TX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx);
+ }
+ }
+ }
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY_TX_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+ hi2c->XferISR = I2C_Slave_ISR_DMA;
+
+ if (hi2c->hdmatx != NULL)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmatx->XferCpltCallback = I2C_DMASlaveTransmitCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmatx->XferHalfCpltCallback = NULL;
+ hi2c->hdmatx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Update XferCount value */
+ hi2c->XferCount -= hi2c->XferSize;
+
+ /* Reset XferSize */
+ hi2c->XferSize = 0;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (I2C_GET_DIR(hi2c) == I2C_DIRECTION_RECEIVE)
+ {
+ /* Clear ADDR flag after prepare the transfer parameters */
+ /* This action will generate an acknowledge to the Master */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* Enable ERR, STOP, NACK, ADDR interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_LISTEN_IT);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+}
+
+/**
+ * @brief Sequential receive in slave/device I2C mode an amount of data in non-blocking mode with Interrupt
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+
+ /* Disable Interrupts, to prevent preemption during treatment in case of multicall */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_RX_IT);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* I2C cannot manage full duplex exchange so disable previous IT enabled if any */
+ /* and then toggle the HAL slave TX state to RX state */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN)
+ {
+ /* Disable associated Interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT);
+
+ if ((hi2c->Instance->CR1 & I2C_CR1_TXDMAEN) == I2C_CR1_TXDMAEN)
+ {
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ /* Abort DMA Xfer if any */
+ if (hi2c->hdmatx != NULL)
+ {
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA TX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx);
+ }
+ }
+ }
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+ hi2c->XferISR = I2C_Slave_ISR_IT;
+
+ if (I2C_GET_DIR(hi2c) == I2C_DIRECTION_TRANSMIT)
+ {
+ /* Clear ADDR flag after prepare the transfer parameters */
+ /* This action will generate an acknowledge to the Master */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* REnable ADDR interrupt */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT | I2C_XFER_LISTEN_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+}
+
+/**
+ * @brief Sequential receive in slave/device I2C mode an amount of data in non-blocking mode with DMA
+ * @note This interface allow to manage repeated start condition when a direction change during transfer
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param pData Pointer to data buffer
+ * @param Size Amount of data to be sent
+ * @param XferOptions Options of Transfer, value of @ref I2C_XFEROPTIONS
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Slave_Seq_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t XferOptions)
+{
+ HAL_StatusTypeDef dmaxferstatus;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_TRANSFER_OPTIONS_REQUEST(XferOptions));
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ if ((pData == NULL) || (Size == 0U))
+ {
+ hi2c->ErrorCode = HAL_I2C_ERROR_INVALID_PARAM;
+ return HAL_ERROR;
+ }
+
+ /* Disable Interrupts, to prevent preemption during treatment in case of multicall */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_RX_IT);
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* I2C cannot manage full duplex exchange so disable previous IT enabled if any */
+ /* and then toggle the HAL slave TX state to RX state */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN)
+ {
+ /* Disable associated Interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT);
+
+ if ((hi2c->Instance->CR1 & I2C_CR1_TXDMAEN) == I2C_CR1_TXDMAEN)
+ {
+ /* Abort DMA Xfer if any */
+ if (hi2c->hdmatx != NULL)
+ {
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA TX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx);
+ }
+ }
+ }
+ }
+ else if (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN)
+ {
+ if ((hi2c->Instance->CR1 & I2C_CR1_RXDMAEN) == I2C_CR1_RXDMAEN)
+ {
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ /* Abort DMA Xfer if any */
+ if (hi2c->hdmarx != NULL)
+ {
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Abort DMA RX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx);
+ }
+ }
+ }
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+
+ hi2c->State = HAL_I2C_STATE_BUSY_RX_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_SLAVE;
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+
+ /* Enable Address Acknowledge */
+ hi2c->Instance->CR2 &= ~I2C_CR2_NACK;
+
+ /* Prepare transfer parameters */
+ hi2c->pBuffPtr = pData;
+ hi2c->XferCount = Size;
+ hi2c->XferSize = hi2c->XferCount;
+ hi2c->XferOptions = XferOptions;
+ hi2c->XferISR = I2C_Slave_ISR_DMA;
+
+ if (hi2c->hdmarx != NULL)
+ {
+ /* Set the I2C DMA transfer complete callback */
+ hi2c->hdmarx->XferCpltCallback = I2C_DMASlaveReceiveCplt;
+
+ /* Set the DMA error callback */
+ hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
+
+ /* Set the unused DMA callbacks to NULL */
+ hi2c->hdmarx->XferHalfCpltCallback = NULL;
+ hi2c->hdmarx->XferAbortCallback = NULL;
+
+ /* Enable the DMA channel */
+ dmaxferstatus = HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)pData, hi2c->XferSize);
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA_PARAM;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (dmaxferstatus == HAL_OK)
+ {
+ /* Update XferCount value */
+ hi2c->XferCount -= hi2c->XferSize;
+
+ /* Reset XferSize */
+ hi2c->XferSize = 0;
+ }
+ else
+ {
+ /* Update I2C state */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Update I2C error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+
+ if (I2C_GET_DIR(hi2c) == I2C_DIRECTION_TRANSMIT)
+ {
+ /* Clear ADDR flag after prepare the transfer parameters */
+ /* This action will generate an acknowledge to the Master */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ /* REnable ADDR interrupt */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_RX_IT | I2C_XFER_LISTEN_IT);
+
+ /* Enable DMA Request */
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+}
+
+/**
+ * @brief Enable the Address listen mode with Interrupt.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_EnableListen_IT(I2C_HandleTypeDef *hi2c)
+{
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->XferISR = I2C_Slave_ISR_IT;
+
+ /* Enable the Address Match interrupt */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_LISTEN_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Disable the Address listen mode with Interrupt.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_DisableListen_IT(I2C_HandleTypeDef *hi2c)
+{
+ /* Declaration of tmp to prevent undefined behavior of volatile usage */
+ uint32_t tmp;
+
+ /* Disable Address listen mode only if a transfer is not ongoing */
+ if (hi2c->State == HAL_I2C_STATE_LISTEN)
+ {
+ tmp = (uint32_t)(hi2c->State) & I2C_STATE_MSK;
+ hi2c->PreviousState = tmp | (uint32_t)(hi2c->Mode);
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->XferISR = NULL;
+
+ /* Disable the Address Match interrupt */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Abort a master I2C IT or DMA process communication with Interrupt.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2C_Master_Abort_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress)
+{
+ if (hi2c->Mode == HAL_I2C_MODE_MASTER)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ /* Disable Interrupts and Store Previous state */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_TX)
+ {
+ I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT);
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_TX;
+ }
+ else if (hi2c->State == HAL_I2C_STATE_BUSY_RX)
+ {
+ I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT);
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX;
+ }
+ else
+ {
+ /* Do nothing */
+ }
+
+ /* Set State at HAL_I2C_STATE_ABORT */
+ hi2c->State = HAL_I2C_STATE_ABORT;
+
+ /* Set NBYTES to 1 to generate a dummy read on I2C peripheral */
+ /* Set AUTOEND mode, this will generate a NACK then STOP condition to abort the current transfer */
+ I2C_TransferConfig(hi2c, DevAddress, 1, I2C_AUTOEND_MODE, I2C_GENERATE_STOP);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Note : The I2C interrupts must be enabled after unlocking current process
+ to avoid the risk of I2C interrupt handle execution before current
+ process unlock */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_CPLT_IT);
+
+ return HAL_OK;
+ }
+ else
+ {
+ /* Wrong usage of abort function */
+ /* This function should be used only in case of abort monitored by master device */
+ return HAL_ERROR;
+ }
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_IRQ_Handler_and_Callbacks IRQ Handler and Callbacks
+ * @{
+ */
+
+/**
+ * @brief This function handles I2C event interrupt request.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c)
+{
+ /* Get current IT Flags and IT sources value */
+ uint32_t itflags = READ_REG(hi2c->Instance->ISR);
+ uint32_t itsources = READ_REG(hi2c->Instance->CR1);
+
+ /* I2C events treatment -------------------------------------*/
+ if (hi2c->XferISR != NULL)
+ {
+ hi2c->XferISR(hi2c, itflags, itsources);
+ }
+}
+
+/**
+ * @brief This function handles I2C error interrupt request.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c)
+{
+ uint32_t itflags = READ_REG(hi2c->Instance->ISR);
+ uint32_t itsources = READ_REG(hi2c->Instance->CR1);
+ uint32_t tmperror;
+
+ /* I2C Bus error interrupt occurred ------------------------------------*/
+ if ((I2C_CHECK_FLAG(itflags, I2C_FLAG_BERR) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERRI) != RESET))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_BERR;
+
+ /* Clear BERR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_BERR);
+ }
+
+ /* I2C Over-Run/Under-Run interrupt occurred ----------------------------------------*/
+ if ((I2C_CHECK_FLAG(itflags, I2C_FLAG_OVR) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERRI) != RESET))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_OVR;
+
+ /* Clear OVR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_OVR);
+ }
+
+ /* I2C Arbitration Loss error interrupt occurred -------------------------------------*/
+ if ((I2C_CHECK_FLAG(itflags, I2C_FLAG_ARLO) != RESET) && (I2C_CHECK_IT_SOURCE(itsources, I2C_IT_ERRI) != RESET))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_ARLO;
+
+ /* Clear ARLO flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ARLO);
+ }
+
+ /* Store current volatile hi2c->ErrorCode, misra rule */
+ tmperror = hi2c->ErrorCode;
+
+ /* Call the Error Callback in case of Error detected */
+ if ((tmperror & (HAL_I2C_ERROR_BERR | HAL_I2C_ERROR_OVR | HAL_I2C_ERROR_ARLO)) != HAL_I2C_ERROR_NONE)
+ {
+ I2C_ITError(hi2c, tmperror);
+ }
+}
+
+/**
+ * @brief Master Tx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MasterTxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Master Rx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MasterRxCpltCallback could be implemented in the user file
+ */
+}
+
+/** @brief Slave Tx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_SlaveTxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Slave Rx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_SlaveRxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Slave Address Match callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param TransferDirection Master request Transfer Direction (Write/Read), value of @ref I2C_XFERDIRECTION
+ * @param AddrMatchCode Address Match Code
+ * @retval None
+ */
+__weak void HAL_I2C_AddrCallback(I2C_HandleTypeDef *hi2c, uint8_t TransferDirection, uint16_t AddrMatchCode)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+ UNUSED(TransferDirection);
+ UNUSED(AddrMatchCode);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_AddrCallback() could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Listen Complete callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_ListenCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_ListenCpltCallback() could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Memory Tx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MemTxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MemTxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief Memory Rx Transfer completed callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_MemRxCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief I2C error callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_ErrorCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief I2C abort callback.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval None
+ */
+__weak void HAL_I2C_AbortCpltCallback(I2C_HandleTypeDef *hi2c)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(hi2c);
+
+ /* NOTE : This function should not be modified, when the callback is needed,
+ the HAL_I2C_AbortCpltCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup I2C_Exported_Functions_Group3 Peripheral State, Mode and Error functions
+ * @brief Peripheral State, Mode and Error functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral State, Mode and Error functions #####
+ ===============================================================================
+ [..]
+ This subsection permit to get in run-time the status of the peripheral
+ and the data flow.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Return the I2C handle state.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @retval HAL state
+ */
+HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c)
+{
+ /* Return I2C handle state */
+ return hi2c->State;
+}
+
+/**
+ * @brief Returns the I2C Master, Slave, Memory or no mode.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for I2C module
+ * @retval HAL mode
+ */
+HAL_I2C_ModeTypeDef HAL_I2C_GetMode(I2C_HandleTypeDef *hi2c)
+{
+ return hi2c->Mode;
+}
+
+/**
+* @brief Return the I2C error code.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+* @retval I2C Error Code
+*/
+uint32_t HAL_I2C_GetError(I2C_HandleTypeDef *hi2c)
+{
+ return hi2c->ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup I2C_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Interrupt Sub-Routine which handle the Interrupt Flags Master Mode with Interrupt.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param ITFlags Interrupt flags to handle.
+ * @param ITSources Interrupt sources enabled.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_Master_ISR_IT(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources)
+{
+ uint16_t devaddress;
+ uint32_t tmpITFlags = ITFlags;
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_AF) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_NACKI) != RESET))
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Set corresponding Error Code */
+ /* No need to generate STOP, it is automatically done */
+ /* Error callback will be send during stop flag treatment */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+
+ /* Flush TX register */
+ I2C_Flush_TXDR(hi2c);
+ }
+ else if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_RXNE) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_RXI) != RESET))
+ {
+ /* Remove RXNE flag on temporary variable as read done */
+ tmpITFlags &= ~I2C_FLAG_RXNE;
+
+ /* Read data from RXDR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ else if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_TXIS) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_TXI) != RESET))
+ {
+ /* Write data to TXDR */
+ hi2c->Instance->TXDR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ else if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_TCR) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_TCI) != RESET))
+ {
+ if ((hi2c->XferCount != 0U) && (hi2c->XferSize == 0U))
+ {
+ devaddress = (uint16_t)(hi2c->Instance->CR2 & I2C_CR2_SADD);
+
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ I2C_TransferConfig(hi2c, devaddress, (uint8_t)hi2c->XferSize, I2C_RELOAD_MODE, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ if (hi2c->XferOptions != I2C_NO_OPTION_FRAME)
+ {
+ I2C_TransferConfig(hi2c, devaddress, (uint8_t)hi2c->XferSize, hi2c->XferOptions, I2C_NO_STARTSTOP);
+ }
+ else
+ {
+ I2C_TransferConfig(hi2c, devaddress, (uint8_t)hi2c->XferSize, I2C_AUTOEND_MODE, I2C_NO_STARTSTOP);
+ }
+ }
+ }
+ else
+ {
+ /* Call TxCpltCallback() if no stop mode is set */
+ if (I2C_GET_STOP_MODE(hi2c) != I2C_AUTOEND_MODE)
+ {
+ /* Call I2C Master Sequential complete process */
+ I2C_ITMasterSeqCplt(hi2c);
+ }
+ else
+ {
+ /* Wrong size Status regarding TCR flag event */
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, HAL_I2C_ERROR_SIZE);
+ }
+ }
+ }
+ else if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_TC) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_TCI) != RESET))
+ {
+ if (hi2c->XferCount == 0U)
+ {
+ if (I2C_GET_STOP_MODE(hi2c) != I2C_AUTOEND_MODE)
+ {
+ /* Generate a stop condition in case of no transfer option */
+ if (hi2c->XferOptions == I2C_NO_OPTION_FRAME)
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR2 |= I2C_CR2_STOP;
+ }
+ else
+ {
+ /* Call I2C Master Sequential complete process */
+ I2C_ITMasterSeqCplt(hi2c);
+ }
+ }
+ }
+ else
+ {
+ /* Wrong size Status regarding TC flag event */
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, HAL_I2C_ERROR_SIZE);
+ }
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+
+ if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_STOPF) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_STOPI) != RESET))
+ {
+ /* Call I2C Master complete process */
+ I2C_ITMasterCplt(hi2c, tmpITFlags);
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Interrupt Sub-Routine which handle the Interrupt Flags Slave Mode with Interrupt.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param ITFlags Interrupt flags to handle.
+ * @param ITSources Interrupt sources enabled.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_Slave_ISR_IT(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources)
+{
+ uint32_t tmpoptions = hi2c->XferOptions;
+ uint32_t tmpITFlags = ITFlags;
+
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if STOPF is set */
+ if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_STOPF) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_STOPI) != RESET))
+ {
+ /* Call I2C Slave complete process */
+ I2C_ITSlaveCplt(hi2c, tmpITFlags);
+ }
+
+ if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_AF) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_NACKI) != RESET))
+ {
+ /* Check that I2C transfer finished */
+ /* if yes, normal use case, a NACK is sent by the MASTER when Transfer is finished */
+ /* Mean XferCount == 0*/
+ /* So clear Flag NACKF only */
+ if (hi2c->XferCount == 0U)
+ {
+ if ((hi2c->State == HAL_I2C_STATE_LISTEN) && (tmpoptions == I2C_FIRST_AND_LAST_FRAME)) /* Same action must be done for (tmpoptions == I2C_LAST_FRAME) which removed for Warning[Pa134]: left and right operands are identical */
+ {
+ /* Call I2C Listen complete process */
+ I2C_ITListenCplt(hi2c, tmpITFlags);
+ }
+ else if ((hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN) && (tmpoptions != I2C_NO_OPTION_FRAME))
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Flush TX register */
+ I2C_Flush_TXDR(hi2c);
+
+ /* Last Byte is Transmitted */
+ /* Call I2C Slave Sequential complete process */
+ I2C_ITSlaveSeqCplt(hi2c);
+ }
+ else
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+ }
+ }
+ else
+ {
+ /* if no, error use case, a Non-Acknowledge of last Data is generated by the MASTER*/
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Set ErrorCode corresponding to a Non-Acknowledge */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+
+ if ((tmpoptions == I2C_FIRST_FRAME) || (tmpoptions == I2C_NEXT_FRAME))
+ {
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, hi2c->ErrorCode);
+ }
+ }
+ }
+ else if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_RXNE) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_RXI) != RESET))
+ {
+ if (hi2c->XferCount > 0U)
+ {
+ /* Read data from RXDR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+
+ if ((hi2c->XferCount == 0U) && \
+ (tmpoptions != I2C_NO_OPTION_FRAME))
+ {
+ /* Call I2C Slave Sequential complete process */
+ I2C_ITSlaveSeqCplt(hi2c);
+ }
+ }
+ else if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_ADDR) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_ADDRI) != RESET))
+ {
+ I2C_ITAddrCplt(hi2c, tmpITFlags);
+ }
+ else if ((I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_TXIS) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_TXI) != RESET))
+ {
+ /* Write data to TXDR only if XferCount not reach "0" */
+ /* A TXIS flag can be set, during STOP treatment */
+ /* Check if all data have already been sent */
+ /* If it is the case, this last write in TXDR is not sent, correspond to a dummy TXIS event */
+ if (hi2c->XferCount > 0U)
+ {
+ /* Write data to TXDR */
+ hi2c->Instance->TXDR = *hi2c->pBuffPtr;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ hi2c->XferCount--;
+ hi2c->XferSize--;
+ }
+ else
+ {
+ if ((tmpoptions == I2C_NEXT_FRAME) || (tmpoptions == I2C_FIRST_FRAME))
+ {
+ /* Last Byte is Transmitted */
+ /* Call I2C Slave Sequential complete process */
+ I2C_ITSlaveSeqCplt(hi2c);
+ }
+ }
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Interrupt Sub-Routine which handle the Interrupt Flags Master Mode with DMA.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param ITFlags Interrupt flags to handle.
+ * @param ITSources Interrupt sources enabled.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_Master_ISR_DMA(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources)
+{
+ uint16_t devaddress;
+ uint32_t xfermode;
+
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ if ((I2C_CHECK_FLAG(ITFlags, I2C_FLAG_AF) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_NACKI) != RESET))
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Set corresponding Error Code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+
+ /* No need to generate STOP, it is automatically done */
+ /* But enable STOP interrupt, to treat it */
+ /* Error callback will be send during stop flag treatment */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_CPLT_IT);
+
+ /* Flush TX register */
+ I2C_Flush_TXDR(hi2c);
+ }
+ else if ((I2C_CHECK_FLAG(ITFlags, I2C_FLAG_TCR) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_TCI) != RESET))
+ {
+ /* Disable TC interrupt */
+ __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_TCI);
+
+ if (hi2c->XferCount != 0U)
+ {
+ /* Recover Slave address */
+ devaddress = (uint16_t)(hi2c->Instance->CR2 & I2C_CR2_SADD);
+
+ /* Prepare the new XferSize to transfer */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ xfermode = I2C_RELOAD_MODE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ if (hi2c->XferOptions != I2C_NO_OPTION_FRAME)
+ {
+ xfermode = hi2c->XferOptions;
+ }
+ else
+ {
+ xfermode = I2C_AUTOEND_MODE;
+ }
+ }
+
+ /* Set the new XferSize in Nbytes register */
+ I2C_TransferConfig(hi2c, devaddress, (uint8_t)hi2c->XferSize, xfermode, I2C_NO_STARTSTOP);
+
+ /* Update XferCount value */
+ hi2c->XferCount -= hi2c->XferSize;
+
+ /* Enable DMA Request */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_RX)
+ {
+ hi2c->Instance->CR1 |= I2C_CR1_RXDMAEN;
+ }
+ else
+ {
+ hi2c->Instance->CR1 |= I2C_CR1_TXDMAEN;
+ }
+ }
+ else
+ {
+ /* Call TxCpltCallback() if no stop mode is set */
+ if (I2C_GET_STOP_MODE(hi2c) != I2C_AUTOEND_MODE)
+ {
+ /* Call I2C Master Sequential complete process */
+ I2C_ITMasterSeqCplt(hi2c);
+ }
+ else
+ {
+ /* Wrong size Status regarding TCR flag event */
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, HAL_I2C_ERROR_SIZE);
+ }
+ }
+ }
+ else if ((I2C_CHECK_FLAG(ITFlags, I2C_FLAG_TC) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_TCI) != RESET))
+ {
+ if (hi2c->XferCount == 0U)
+ {
+ if (I2C_GET_STOP_MODE(hi2c) != I2C_AUTOEND_MODE)
+ {
+ /* Generate a stop condition in case of no transfer option */
+ if (hi2c->XferOptions == I2C_NO_OPTION_FRAME)
+ {
+ /* Generate Stop */
+ hi2c->Instance->CR2 |= I2C_CR2_STOP;
+ }
+ else
+ {
+ /* Call I2C Master Sequential complete process */
+ I2C_ITMasterSeqCplt(hi2c);
+ }
+ }
+ }
+ else
+ {
+ /* Wrong size Status regarding TC flag event */
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, HAL_I2C_ERROR_SIZE);
+ }
+ }
+ else if ((I2C_CHECK_FLAG(ITFlags, I2C_FLAG_STOPF) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_STOPI) != RESET))
+ {
+ /* Call I2C Master complete process */
+ I2C_ITMasterCplt(hi2c, ITFlags);
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Interrupt Sub-Routine which handle the Interrupt Flags Slave Mode with DMA.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param ITFlags Interrupt flags to handle.
+ * @param ITSources Interrupt sources enabled.
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_Slave_ISR_DMA(struct __I2C_HandleTypeDef *hi2c, uint32_t ITFlags, uint32_t ITSources)
+{
+ uint32_t tmpoptions = hi2c->XferOptions;
+ uint32_t treatdmanack = 0U;
+ HAL_I2C_StateTypeDef tmpstate;
+
+ /* Process locked */
+ __HAL_LOCK(hi2c);
+
+ /* Check if STOPF is set */
+ if ((I2C_CHECK_FLAG(ITFlags, I2C_FLAG_STOPF) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_STOPI) != RESET))
+ {
+ /* Call I2C Slave complete process */
+ I2C_ITSlaveCplt(hi2c, ITFlags);
+ }
+
+ if ((I2C_CHECK_FLAG(ITFlags, I2C_FLAG_AF) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_NACKI) != RESET))
+ {
+ /* Check that I2C transfer finished */
+ /* if yes, normal use case, a NACK is sent by the MASTER when Transfer is finished */
+ /* Mean XferCount == 0 */
+ /* So clear Flag NACKF only */
+ if ((I2C_CHECK_IT_SOURCE(ITSources, I2C_CR1_TXDMAEN) != RESET) ||
+ (I2C_CHECK_IT_SOURCE(ITSources, I2C_CR1_RXDMAEN) != RESET))
+ {
+ /* Split check of hdmarx, for MISRA compliance */
+ if (hi2c->hdmarx != NULL)
+ {
+ if (I2C_CHECK_IT_SOURCE(ITSources, I2C_CR1_RXDMAEN) != RESET)
+ {
+ if (__HAL_DMA_GET_COUNTER(hi2c->hdmarx) == 0U)
+ {
+ treatdmanack = 1U;
+ }
+ }
+ }
+
+ /* Split check of hdmatx, for MISRA compliance */
+ if (hi2c->hdmatx != NULL)
+ {
+ if (I2C_CHECK_IT_SOURCE(ITSources, I2C_CR1_TXDMAEN) != RESET)
+ {
+ if (__HAL_DMA_GET_COUNTER(hi2c->hdmatx) == 0U)
+ {
+ treatdmanack = 1U;
+ }
+ }
+ }
+
+ if (treatdmanack == 1U)
+ {
+ if ((hi2c->State == HAL_I2C_STATE_LISTEN) && (tmpoptions == I2C_FIRST_AND_LAST_FRAME)) /* Same action must be done for (tmpoptions == I2C_LAST_FRAME) which removed for Warning[Pa134]: left and right operands are identical */
+ {
+ /* Call I2C Listen complete process */
+ I2C_ITListenCplt(hi2c, ITFlags);
+ }
+ else if ((hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN) && (tmpoptions != I2C_NO_OPTION_FRAME))
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Flush TX register */
+ I2C_Flush_TXDR(hi2c);
+
+ /* Last Byte is Transmitted */
+ /* Call I2C Slave Sequential complete process */
+ I2C_ITSlaveSeqCplt(hi2c);
+ }
+ else
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+ }
+ }
+ else
+ {
+ /* if no, error use case, a Non-Acknowledge of last Data is generated by the MASTER*/
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Set ErrorCode corresponding to a Non-Acknowledge */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+
+ /* Store current hi2c->State, solve MISRA2012-Rule-13.5 */
+ tmpstate = hi2c->State;
+
+ if ((tmpoptions == I2C_FIRST_FRAME) || (tmpoptions == I2C_NEXT_FRAME))
+ {
+ if ((tmpstate == HAL_I2C_STATE_BUSY_TX) || (tmpstate == HAL_I2C_STATE_BUSY_TX_LISTEN))
+ {
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX;
+ }
+ else if ((tmpstate == HAL_I2C_STATE_BUSY_RX) || (tmpstate == HAL_I2C_STATE_BUSY_RX_LISTEN))
+ {
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_RX;
+ }
+ else
+ {
+ /* Do nothing */
+ }
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, hi2c->ErrorCode);
+ }
+ }
+ }
+ else
+ {
+ /* Only Clear NACK Flag, no DMA treatment is pending */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+ }
+ }
+ else if ((I2C_CHECK_FLAG(ITFlags, I2C_FLAG_ADDR) != RESET) && (I2C_CHECK_IT_SOURCE(ITSources, I2C_IT_ADDRI) != RESET))
+ {
+ I2C_ITAddrCplt(hi2c, ITFlags);
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Master sends target device address followed by internal memory address for write request.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart)
+{
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)MemAddSize, I2C_RELOAD_MODE, I2C_GENERATE_START_WRITE);
+
+ /* Wait until TXIS flag is set */
+ if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* If Memory address size is 8Bit */
+ if (MemAddSize == I2C_MEMADD_SIZE_8BIT)
+ {
+ /* Send Memory Address */
+ hi2c->Instance->TXDR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+ /* If Memory address size is 16Bit */
+ else
+ {
+ /* Send MSB of Memory Address */
+ hi2c->Instance->TXDR = I2C_MEM_ADD_MSB(MemAddress);
+
+ /* Wait until TXIS flag is set */
+ if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Send LSB of Memory Address */
+ hi2c->Instance->TXDR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+
+ /* Wait until TCR flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TCR, RESET, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Master sends target device address followed by internal memory address for read request.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param DevAddress Target device address: The device 7 bits address value
+ * in datasheet must be shifted to the left before calling the interface
+ * @param MemAddress Internal memory address
+ * @param MemAddSize Size of internal memory address
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout, uint32_t Tickstart)
+{
+ I2C_TransferConfig(hi2c, DevAddress, (uint8_t)MemAddSize, I2C_SOFTEND_MODE, I2C_GENERATE_START_WRITE);
+
+ /* Wait until TXIS flag is set */
+ if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* If Memory address size is 8Bit */
+ if (MemAddSize == I2C_MEMADD_SIZE_8BIT)
+ {
+ /* Send Memory Address */
+ hi2c->Instance->TXDR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+ /* If Memory address size is 16Bit */
+ else
+ {
+ /* Send MSB of Memory Address */
+ hi2c->Instance->TXDR = I2C_MEM_ADD_MSB(MemAddress);
+
+ /* Wait until TXIS flag is set */
+ if (I2C_WaitOnTXISFlagUntilTimeout(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Send LSB of Memory Address */
+ hi2c->Instance->TXDR = I2C_MEM_ADD_LSB(MemAddress);
+ }
+
+ /* Wait until TC flag is set */
+ if (I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TC, RESET, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief I2C Address complete process callback.
+ * @param hi2c I2C handle.
+ * @param ITFlags Interrupt flags to handle.
+ * @retval None
+ */
+static void I2C_ITAddrCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags)
+{
+ uint8_t transferdirection;
+ uint16_t slaveaddrcode;
+ uint16_t ownadd1code;
+ uint16_t ownadd2code;
+
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(ITFlags);
+
+ /* In case of Listen state, need to inform upper layer of address match code event */
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) == (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ transferdirection = I2C_GET_DIR(hi2c);
+ slaveaddrcode = I2C_GET_ADDR_MATCH(hi2c);
+ ownadd1code = I2C_GET_OWN_ADDRESS1(hi2c);
+ ownadd2code = I2C_GET_OWN_ADDRESS2(hi2c);
+
+ /* If 10bits addressing mode is selected */
+ if (hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT)
+ {
+ if ((slaveaddrcode & SlaveAddr_MSK) == ((ownadd1code >> SlaveAddr_SHIFT) & SlaveAddr_MSK))
+ {
+ slaveaddrcode = ownadd1code;
+ hi2c->AddrEventCount++;
+ if (hi2c->AddrEventCount == 2U)
+ {
+ /* Reset Address Event counter */
+ hi2c->AddrEventCount = 0U;
+
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call Slave Addr callback */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->AddrCallback(hi2c, transferdirection, slaveaddrcode);
+#else
+ HAL_I2C_AddrCallback(hi2c, transferdirection, slaveaddrcode);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ else
+ {
+ slaveaddrcode = ownadd2code;
+
+ /* Disable ADDR Interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call Slave Addr callback */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->AddrCallback(hi2c, transferdirection, slaveaddrcode);
+#else
+ HAL_I2C_AddrCallback(hi2c, transferdirection, slaveaddrcode);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ /* else 7 bits addressing mode is selected */
+ else
+ {
+ /* Disable ADDR Interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call Slave Addr callback */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->AddrCallback(hi2c, transferdirection, slaveaddrcode);
+#else
+ HAL_I2C_AddrCallback(hi2c, transferdirection, slaveaddrcode);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ /* Else clear address flag only */
+ else
+ {
+ /* Clear ADDR flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ADDR);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ }
+}
+
+/**
+ * @brief I2C Master sequential complete process.
+ * @param hi2c I2C handle.
+ * @retval None
+ */
+static void I2C_ITMasterSeqCplt(I2C_HandleTypeDef *hi2c)
+{
+ /* Reset I2C handle mode */
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* No Generate Stop, to permit restart mode */
+ /* The stop will be done at the end of transfer, when I2C_AUTOEND_MODE enable */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_TX)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_TX;
+ hi2c->XferISR = NULL;
+
+ /* Disable Interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterTxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ /* hi2c->State == HAL_I2C_STATE_BUSY_RX */
+ else
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX;
+ hi2c->XferISR = NULL;
+
+ /* Disable Interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterRxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+}
+
+/**
+ * @brief I2C Slave sequential complete process.
+ * @param hi2c I2C handle.
+ * @retval None
+ */
+static void I2C_ITSlaveSeqCplt(I2C_HandleTypeDef *hi2c)
+{
+ uint32_t tmpcr1value = READ_REG(hi2c->Instance->CR1);
+
+ /* Reset I2C handle mode */
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* If a DMA is ongoing, Update handle size context */
+ if (I2C_CHECK_IT_SOURCE(tmpcr1value, I2C_CR1_TXDMAEN) != RESET)
+ {
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+ }
+ else if (I2C_CHECK_IT_SOURCE(tmpcr1value, I2C_CR1_RXDMAEN) != RESET)
+ {
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+ }
+ else
+ {
+ /* Do nothing */
+ }
+
+ if (hi2c->State == HAL_I2C_STATE_BUSY_TX_LISTEN)
+ {
+ /* Remove HAL_I2C_STATE_SLAVE_BUSY_TX, keep only HAL_I2C_STATE_LISTEN */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX;
+
+ /* Disable Interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveTxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+
+ else if (hi2c->State == HAL_I2C_STATE_BUSY_RX_LISTEN)
+ {
+ /* Remove HAL_I2C_STATE_SLAVE_BUSY_RX, keep only HAL_I2C_STATE_LISTEN */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_RX;
+
+ /* Disable Interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveRxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+}
+
+/**
+ * @brief I2C Master complete process.
+ * @param hi2c I2C handle.
+ * @param ITFlags Interrupt flags to handle.
+ * @retval None
+ */
+static void I2C_ITMasterCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags)
+{
+ uint32_t tmperror;
+ uint32_t tmpITFlags = ITFlags;
+ __IO uint32_t tmpreg;
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Disable Interrupts and Store Previous state */
+ if (hi2c->State == HAL_I2C_STATE_BUSY_TX)
+ {
+ I2C_Disable_IRQ(hi2c, I2C_XFER_TX_IT);
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_TX;
+ }
+ else if (hi2c->State == HAL_I2C_STATE_BUSY_RX)
+ {
+ I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT);
+ hi2c->PreviousState = I2C_STATE_MASTER_BUSY_RX;
+ }
+ else
+ {
+ /* Do nothing */
+ }
+
+ /* Clear Configuration Register 2 */
+ I2C_RESET_CR2(hi2c);
+
+ /* Reset handle parameters */
+ hi2c->XferISR = NULL;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+
+ if (I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_AF) != RESET)
+ {
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Set acknowledge error code */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+
+ /* Fetch Last receive data if any */
+ if ((hi2c->State == HAL_I2C_STATE_ABORT) && (I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_RXNE) != RESET))
+ {
+ /* Read data from RXDR */
+ tmpreg = (uint8_t)hi2c->Instance->RXDR;
+ UNUSED(tmpreg);
+ }
+
+ /* Flush TX register */
+ I2C_Flush_TXDR(hi2c);
+
+ /* Store current volatile hi2c->ErrorCode, misra rule */
+ tmperror = hi2c->ErrorCode;
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ if ((hi2c->State == HAL_I2C_STATE_ABORT) || (tmperror != HAL_I2C_ERROR_NONE))
+ {
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, hi2c->ErrorCode);
+ }
+ /* hi2c->State == HAL_I2C_STATE_BUSY_TX */
+ else if (hi2c->State == HAL_I2C_STATE_BUSY_TX)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->PreviousState = I2C_STATE_NONE;
+
+ if (hi2c->Mode == HAL_I2C_MODE_MEM)
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MemTxCpltCallback(hi2c);
+#else
+ HAL_I2C_MemTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterTxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ /* hi2c->State == HAL_I2C_STATE_BUSY_RX */
+ else if (hi2c->State == HAL_I2C_STATE_BUSY_RX)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->PreviousState = I2C_STATE_NONE;
+
+ if (hi2c->Mode == HAL_I2C_MODE_MEM)
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MemRxCpltCallback(hi2c);
+#else
+ HAL_I2C_MemRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->MasterRxCpltCallback(hi2c);
+#else
+ HAL_I2C_MasterRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+}
+
+/**
+ * @brief I2C Slave complete process.
+ * @param hi2c I2C handle.
+ * @param ITFlags Interrupt flags to handle.
+ * @retval None
+ */
+static void I2C_ITSlaveCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags)
+{
+ uint32_t tmpcr1value = READ_REG(hi2c->Instance->CR1);
+ uint32_t tmpITFlags = ITFlags;
+ HAL_I2C_StateTypeDef tmpstate = hi2c->State;
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Disable Interrupts and Store Previous state */
+ if ((tmpstate == HAL_I2C_STATE_BUSY_TX) || (tmpstate == HAL_I2C_STATE_BUSY_TX_LISTEN))
+ {
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_TX_IT);
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_TX;
+ }
+ else if ((tmpstate == HAL_I2C_STATE_BUSY_RX) || (tmpstate == HAL_I2C_STATE_BUSY_RX_LISTEN))
+ {
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_RX_IT);
+ hi2c->PreviousState = I2C_STATE_SLAVE_BUSY_RX;
+ }
+ else
+ {
+ /* Do nothing */
+ }
+
+ /* Disable Address Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ /* Clear Configuration Register 2 */
+ I2C_RESET_CR2(hi2c);
+
+ /* Flush TX register */
+ I2C_Flush_TXDR(hi2c);
+
+ /* If a DMA is ongoing, Update handle size context */
+ if (I2C_CHECK_IT_SOURCE(tmpcr1value, I2C_CR1_TXDMAEN) != RESET)
+ {
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ if (hi2c->hdmatx != NULL)
+ {
+ hi2c->XferCount = (uint16_t)__HAL_DMA_GET_COUNTER(hi2c->hdmatx);
+ }
+ }
+ else if (I2C_CHECK_IT_SOURCE(tmpcr1value, I2C_CR1_RXDMAEN) != RESET)
+ {
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ if (hi2c->hdmarx != NULL)
+ {
+ hi2c->XferCount = (uint16_t)__HAL_DMA_GET_COUNTER(hi2c->hdmarx);
+ }
+ }
+ else
+ {
+ /* Do nothing */
+ }
+
+ /* Store Last receive data if any */
+ if (I2C_CHECK_FLAG(tmpITFlags, I2C_FLAG_RXNE) != RESET)
+ {
+ /* Remove RXNE flag on temporary variable as read done */
+ tmpITFlags &= ~I2C_FLAG_RXNE;
+
+ /* Read data from RXDR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ if ((hi2c->XferSize > 0U))
+ {
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+ }
+ }
+
+ /* All data are not transferred, so set error code accordingly */
+ if (hi2c->XferCount != 0U)
+ {
+ /* Set ErrorCode corresponding to a Non-Acknowledge */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->XferISR = NULL;
+
+ if (hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
+ {
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, hi2c->ErrorCode);
+
+ /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */
+ if (hi2c->State == HAL_I2C_STATE_LISTEN)
+ {
+ /* Call I2C Listen complete process */
+ I2C_ITListenCplt(hi2c, tmpITFlags);
+ }
+ }
+ else if (hi2c->XferOptions != I2C_NO_OPTION_FRAME)
+ {
+ /* Call the Sequential Complete callback, to inform upper layer of the end of Transfer */
+ I2C_ITSlaveSeqCplt(hi2c);
+
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->PreviousState = I2C_STATE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ListenCpltCallback(hi2c);
+#else
+ HAL_I2C_ListenCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ else if (hi2c->State == HAL_I2C_STATE_BUSY_RX)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->PreviousState = I2C_STATE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveRxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveRxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->PreviousState = I2C_STATE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->SlaveTxCpltCallback(hi2c);
+#else
+ HAL_I2C_SlaveTxCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+}
+
+/**
+ * @brief I2C Listen complete process.
+ * @param hi2c I2C handle.
+ * @param ITFlags Interrupt flags to handle.
+ * @retval None
+ */
+static void I2C_ITListenCplt(I2C_HandleTypeDef *hi2c, uint32_t ITFlags)
+{
+ /* Reset handle parameters */
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->PreviousState = I2C_STATE_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->XferISR = NULL;
+
+ /* Store Last receive data if any */
+ if (I2C_CHECK_FLAG(ITFlags, I2C_FLAG_RXNE) != RESET)
+ {
+ /* Read data from RXDR */
+ *hi2c->pBuffPtr = (uint8_t)hi2c->Instance->RXDR;
+
+ /* Increment Buffer pointer */
+ hi2c->pBuffPtr++;
+
+ if ((hi2c->XferSize > 0U))
+ {
+ hi2c->XferSize--;
+ hi2c->XferCount--;
+
+ /* Set ErrorCode corresponding to a Non-Acknowledge */
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ }
+ }
+
+ /* Disable all Interrupts*/
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_RX_IT | I2C_XFER_TX_IT);
+
+ /* Clear NACK Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the Listen Complete callback, to inform upper layer of the end of Listen usecase */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ListenCpltCallback(hi2c);
+#else
+ HAL_I2C_ListenCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+}
+
+/**
+ * @brief I2C interrupts error process.
+ * @param hi2c I2C handle.
+ * @param ErrorCode Error code to handle.
+ * @retval None
+ */
+static void I2C_ITError(I2C_HandleTypeDef *hi2c, uint32_t ErrorCode)
+{
+ HAL_I2C_StateTypeDef tmpstate = hi2c->State;
+ uint32_t tmppreviousstate;
+
+ /* Reset handle parameters */
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+ hi2c->XferOptions = I2C_NO_OPTION_FRAME;
+ hi2c->XferCount = 0U;
+
+ /* Set new error code */
+ hi2c->ErrorCode |= ErrorCode;
+
+ /* Disable Interrupts */
+ if ((tmpstate == HAL_I2C_STATE_LISTEN) ||
+ (tmpstate == HAL_I2C_STATE_BUSY_TX_LISTEN) ||
+ (tmpstate == HAL_I2C_STATE_BUSY_RX_LISTEN))
+ {
+ /* Disable all interrupts, except interrupts related to LISTEN state */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_RX_IT | I2C_XFER_TX_IT);
+
+ /* keep HAL_I2C_STATE_LISTEN if set */
+ hi2c->State = HAL_I2C_STATE_LISTEN;
+ hi2c->XferISR = I2C_Slave_ISR_IT;
+ }
+ else
+ {
+ /* Disable all interrupts */
+ I2C_Disable_IRQ(hi2c, I2C_XFER_LISTEN_IT | I2C_XFER_RX_IT | I2C_XFER_TX_IT);
+
+ /* If state is an abort treatment on going, don't change state */
+ /* This change will be do later */
+ if (hi2c->State != HAL_I2C_STATE_ABORT)
+ {
+ /* Set HAL_I2C_STATE_READY */
+ hi2c->State = HAL_I2C_STATE_READY;
+ }
+ hi2c->XferISR = NULL;
+ }
+
+ /* Abort DMA TX transfer if any */
+ tmppreviousstate = hi2c->PreviousState;
+ if ((hi2c->hdmatx != NULL) && ((tmppreviousstate == I2C_STATE_MASTER_BUSY_TX) || (tmppreviousstate == I2C_STATE_SLAVE_BUSY_TX)))
+ {
+ if ((hi2c->Instance->CR1 & I2C_CR1_TXDMAEN) == I2C_CR1_TXDMAEN)
+ {
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+ }
+
+ if (HAL_DMA_GetState(hi2c->hdmatx) != HAL_DMA_STATE_READY)
+ {
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmatx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Abort DMA TX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmatx) != HAL_OK)
+ {
+ /* Call Directly XferAbortCallback function in case of error */
+ hi2c->hdmatx->XferAbortCallback(hi2c->hdmatx);
+ }
+ }
+ else
+ {
+ I2C_TreatErrorCallback(hi2c);
+ }
+ }
+ /* Abort DMA RX transfer if any */
+ else if ((hi2c->hdmarx != NULL) && ((tmppreviousstate == I2C_STATE_MASTER_BUSY_RX) || (tmppreviousstate == I2C_STATE_SLAVE_BUSY_RX)))
+ {
+ if ((hi2c->Instance->CR1 & I2C_CR1_RXDMAEN) == I2C_CR1_RXDMAEN)
+ {
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+ }
+
+ if (HAL_DMA_GetState(hi2c->hdmarx) != HAL_DMA_STATE_READY)
+ {
+ /* Set the I2C DMA Abort callback :
+ will lead to call HAL_I2C_ErrorCallback() at end of DMA abort procedure */
+ hi2c->hdmarx->XferAbortCallback = I2C_DMAAbort;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Abort DMA RX */
+ if (HAL_DMA_Abort_IT(hi2c->hdmarx) != HAL_OK)
+ {
+ /* Call Directly hi2c->hdmarx->XferAbortCallback function in case of error */
+ hi2c->hdmarx->XferAbortCallback(hi2c->hdmarx);
+ }
+ }
+ else
+ {
+ I2C_TreatErrorCallback(hi2c);
+ }
+ }
+ else
+ {
+ I2C_TreatErrorCallback(hi2c);
+ }
+}
+
+/**
+ * @brief I2C Error callback treatment.
+ * @param hi2c I2C handle.
+ * @retval None
+ */
+static void I2C_TreatErrorCallback(I2C_HandleTypeDef *hi2c)
+{
+ if (hi2c->State == HAL_I2C_STATE_ABORT)
+ {
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->PreviousState = I2C_STATE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->AbortCpltCallback(hi2c);
+#else
+ HAL_I2C_AbortCpltCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+ else
+ {
+ hi2c->PreviousState = I2C_STATE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+#if (USE_HAL_I2C_REGISTER_CALLBACKS == 1)
+ hi2c->ErrorCallback(hi2c);
+#else
+ HAL_I2C_ErrorCallback(hi2c);
+#endif /* USE_HAL_I2C_REGISTER_CALLBACKS */
+ }
+}
+
+/**
+ * @brief I2C Tx data register flush process.
+ * @param hi2c I2C handle.
+ * @retval None
+ */
+static void I2C_Flush_TXDR(I2C_HandleTypeDef *hi2c)
+{
+ /* If a pending TXIS flag is set */
+ /* Write a dummy data in TXDR to clear it */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXIS) != RESET)
+ {
+ hi2c->Instance->TXDR = 0x00U;
+ }
+
+ /* Flush TX register if not empty */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXE) == RESET)
+ {
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_TXE);
+ }
+}
+
+/**
+ * @brief DMA I2C master transmit process complete callback.
+ * @param hdma DMA handle
+ * @retval None
+ */
+static void I2C_DMAMasterTransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ /* If last transfer, enable STOP interrupt */
+ if (hi2c->XferCount == 0U)
+ {
+ /* Enable STOP interrupt */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_CPLT_IT);
+ }
+ /* else prepare a new DMA transfer and enable TCReload interrupt */
+ else
+ {
+ /* Update Buffer pointer */
+ hi2c->pBuffPtr += hi2c->XferSize;
+
+ /* Set the XferSize to transfer */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ }
+
+ /* Enable the DMA channel */
+ if (HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)hi2c->pBuffPtr, (uint32_t)&hi2c->Instance->TXDR, hi2c->XferSize) != HAL_OK)
+ {
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, HAL_I2C_ERROR_DMA);
+ }
+ else
+ {
+ /* Enable TC interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_RELOAD_IT);
+ }
+ }
+}
+
+/**
+ * @brief DMA I2C slave transmit process complete callback.
+ * @param hdma DMA handle
+ * @retval None
+ */
+static void I2C_DMASlaveTransmitCplt(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */
+ uint32_t tmpoptions = hi2c->XferOptions;
+
+ if ((tmpoptions == I2C_NEXT_FRAME) || (tmpoptions == I2C_FIRST_FRAME))
+ {
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_TXDMAEN;
+
+ /* Last Byte is Transmitted */
+ /* Call I2C Slave Sequential complete process */
+ I2C_ITSlaveSeqCplt(hi2c);
+ }
+ else
+ {
+ /* No specific action, Master fully manage the generation of STOP condition */
+ /* Mean that this generation can arrive at any time, at the end or during DMA process */
+ /* So STOP condition should be manage through Interrupt treatment */
+ }
+}
+
+/**
+ * @brief DMA I2C master receive process complete callback.
+ * @param hdma DMA handle
+ * @retval None
+ */
+static void I2C_DMAMasterReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ /* If last transfer, enable STOP interrupt */
+ if (hi2c->XferCount == 0U)
+ {
+ /* Enable STOP interrupt */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_CPLT_IT);
+ }
+ /* else prepare a new DMA transfer and enable TCReload interrupt */
+ else
+ {
+ /* Update Buffer pointer */
+ hi2c->pBuffPtr += hi2c->XferSize;
+
+ /* Set the XferSize to transfer */
+ if (hi2c->XferCount > MAX_NBYTE_SIZE)
+ {
+ hi2c->XferSize = MAX_NBYTE_SIZE;
+ }
+ else
+ {
+ hi2c->XferSize = hi2c->XferCount;
+ }
+
+ /* Enable the DMA channel */
+ if (HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->RXDR, (uint32_t)hi2c->pBuffPtr, hi2c->XferSize) != HAL_OK)
+ {
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, HAL_I2C_ERROR_DMA);
+ }
+ else
+ {
+ /* Enable TC interrupts */
+ I2C_Enable_IRQ(hi2c, I2C_XFER_RELOAD_IT);
+ }
+ }
+}
+
+/**
+ * @brief DMA I2C slave receive process complete callback.
+ * @param hdma DMA handle
+ * @retval None
+ */
+static void I2C_DMASlaveReceiveCplt(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */
+ uint32_t tmpoptions = hi2c->XferOptions;
+
+ if ((__HAL_DMA_GET_COUNTER(hi2c->hdmarx) == 0U) && \
+ (tmpoptions != I2C_NO_OPTION_FRAME))
+ {
+ /* Disable DMA Request */
+ hi2c->Instance->CR1 &= ~I2C_CR1_RXDMAEN;
+
+ /* Call I2C Slave Sequential complete process */
+ I2C_ITSlaveSeqCplt(hi2c);
+ }
+ else
+ {
+ /* No specific action, Master fully manage the generation of STOP condition */
+ /* Mean that this generation can arrive at any time, at the end or during DMA process */
+ /* So STOP condition should be manage through Interrupt treatment */
+ }
+}
+
+/**
+ * @brief DMA I2C communication error callback.
+ * @param hdma DMA handle
+ * @retval None
+ */
+static void I2C_DMAError(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* Disable Acknowledge */
+ hi2c->Instance->CR2 |= I2C_CR2_NACK;
+
+ /* Call the corresponding callback to inform upper layer of End of Transfer */
+ I2C_ITError(hi2c, HAL_I2C_ERROR_DMA);
+}
+
+/**
+ * @brief DMA I2C communication abort callback
+ * (To be called at end of DMA Abort procedure).
+ * @param hdma DMA handle.
+ * @retval None
+ */
+static void I2C_DMAAbort(DMA_HandleTypeDef *hdma)
+{
+ I2C_HandleTypeDef *hi2c = (I2C_HandleTypeDef *)(((DMA_HandleTypeDef *)hdma)->Parent); /* Derogation MISRAC2012-Rule-11.5 */
+
+ /* Reset AbortCpltCallback */
+ if (hi2c->hdmatx != NULL)
+ {
+ hi2c->hdmatx->XferAbortCallback = NULL;
+ }
+ if (hi2c->hdmarx != NULL)
+ {
+ hi2c->hdmarx->XferAbortCallback = NULL;
+ }
+
+ I2C_TreatErrorCallback(hi2c);
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param Flag Specifies the I2C flag to check.
+ * @param Status The new Flag status (SET or RESET).
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout, uint32_t Tickstart)
+{
+ while (__HAL_I2C_GET_FLAG(hi2c, Flag) == Status)
+ {
+ /* Check for the Timeout */
+ if (Timeout != HAL_MAX_DELAY)
+ {
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+ return HAL_ERROR;
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout for specific usage of TXIS flag.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnTXISFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
+{
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXIS) == RESET)
+ {
+ /* Check if a NACK is detected */
+ if (I2C_IsAcknowledgeFailed(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check for the Timeout */
+ if (Timeout != HAL_MAX_DELAY)
+ {
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout for specific usage of STOP flag.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnSTOPFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
+{
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET)
+ {
+ /* Check if a NACK is detected */
+ if (I2C_IsAcknowledgeFailed(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check for the Timeout */
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles I2C Communication Timeout for specific usage of RXNE flag.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_WaitOnRXNEFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
+{
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == RESET)
+ {
+ /* Check if a NACK is detected */
+ if (I2C_IsAcknowledgeFailed(hi2c, Timeout, Tickstart) != HAL_OK)
+ {
+ return HAL_ERROR;
+ }
+
+ /* Check if a STOPF is detected */
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == SET)
+ {
+ /* Check if an RXNE is pending */
+ /* Store Last receive data if any */
+ if ((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE) == SET) && (hi2c->XferSize > 0U))
+ {
+ /* Return HAL_OK */
+ /* The Reading of data from RXDR will be done in caller function */
+ return HAL_OK;
+ }
+ else
+ {
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Clear Configuration Register 2 */
+ I2C_RESET_CR2(hi2c);
+
+ hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+
+ /* Check for the Timeout */
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief This function handles Acknowledge failed detection during an I2C Communication.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param Timeout Timeout duration
+ * @param Tickstart Tick start value
+ * @retval HAL status
+ */
+static HAL_StatusTypeDef I2C_IsAcknowledgeFailed(I2C_HandleTypeDef *hi2c, uint32_t Timeout, uint32_t Tickstart)
+{
+ if (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)
+ {
+ /* Wait until STOP Flag is reset */
+ /* AutoEnd should be initiate after AF */
+ while (__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF) == RESET)
+ {
+ /* Check for the Timeout */
+ if (Timeout != HAL_MAX_DELAY)
+ {
+ if (((HAL_GetTick() - Tickstart) > Timeout) || (Timeout == 0U))
+ {
+ hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ }
+ }
+
+ /* Clear NACKF Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
+
+ /* Clear STOP Flag */
+ __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_STOPF);
+
+ /* Flush TX register */
+ I2C_Flush_TXDR(hi2c);
+
+ /* Clear Configuration Register 2 */
+ I2C_RESET_CR2(hi2c);
+
+ hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
+ hi2c->State = HAL_I2C_STATE_READY;
+ hi2c->Mode = HAL_I2C_MODE_NONE;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_ERROR;
+ }
+ return HAL_OK;
+}
+
+/**
+ * @brief Handles I2Cx communication when starting transfer or during transfer (TC or TCR flag are set).
+ * @param hi2c I2C handle.
+ * @param DevAddress Specifies the slave address to be programmed.
+ * @param Size Specifies the number of bytes to be programmed.
+ * This parameter must be a value between 0 and 255.
+ * @param Mode New state of the I2C START condition generation.
+ * This parameter can be one of the following values:
+ * @arg @ref I2C_RELOAD_MODE Enable Reload mode .
+ * @arg @ref I2C_AUTOEND_MODE Enable Automatic end mode.
+ * @arg @ref I2C_SOFTEND_MODE Enable Software end mode.
+ * @param Request New state of the I2C START condition generation.
+ * This parameter can be one of the following values:
+ * @arg @ref I2C_NO_STARTSTOP Don't Generate stop and start condition.
+ * @arg @ref I2C_GENERATE_STOP Generate stop condition (Size should be set to 0).
+ * @arg @ref I2C_GENERATE_START_READ Generate Restart for read request.
+ * @arg @ref I2C_GENERATE_START_WRITE Generate Restart for write request.
+ * @retval None
+ */
+static void I2C_TransferConfig(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t Size, uint32_t Mode, uint32_t Request)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+ assert_param(IS_TRANSFER_MODE(Mode));
+ assert_param(IS_TRANSFER_REQUEST(Request));
+
+ /* update CR2 register */
+ MODIFY_REG(hi2c->Instance->CR2, ((I2C_CR2_SADD | I2C_CR2_NBYTES | I2C_CR2_RELOAD | I2C_CR2_AUTOEND | (I2C_CR2_RD_WRN & (uint32_t)(Request >> (31U - I2C_CR2_RD_WRN_Pos))) | I2C_CR2_START | I2C_CR2_STOP)), \
+ (uint32_t)(((uint32_t)DevAddress & I2C_CR2_SADD) | (((uint32_t)Size << I2C_CR2_NBYTES_Pos) & I2C_CR2_NBYTES) | (uint32_t)Mode | (uint32_t)Request));
+}
+
+/**
+ * @brief Manage the enabling of Interrupts.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param InterruptRequest Value of @ref I2C_Interrupt_configuration_definition.
+ * @retval None
+ */
+static void I2C_Enable_IRQ(I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest)
+{
+ uint32_t tmpisr = 0U;
+
+ if ((hi2c->XferISR == I2C_Master_ISR_DMA) || \
+ (hi2c->XferISR == I2C_Slave_ISR_DMA))
+ {
+ if ((InterruptRequest & I2C_XFER_LISTEN_IT) == I2C_XFER_LISTEN_IT)
+ {
+ /* Enable ERR, STOP, NACK and ADDR interrupts */
+ tmpisr |= I2C_IT_ADDRI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ERRI;
+ }
+
+ if (InterruptRequest == I2C_XFER_ERROR_IT)
+ {
+ /* Enable ERR and NACK interrupts */
+ tmpisr |= I2C_IT_ERRI | I2C_IT_NACKI;
+ }
+
+ if (InterruptRequest == I2C_XFER_CPLT_IT)
+ {
+ /* Enable STOP interrupts */
+ tmpisr |= (I2C_IT_STOPI | I2C_IT_TCI);
+ }
+
+ if (InterruptRequest == I2C_XFER_RELOAD_IT)
+ {
+ /* Enable TC interrupts */
+ tmpisr |= I2C_IT_TCI;
+ }
+ }
+ else
+ {
+ if ((InterruptRequest & I2C_XFER_LISTEN_IT) == I2C_XFER_LISTEN_IT)
+ {
+ /* Enable ERR, STOP, NACK, and ADDR interrupts */
+ tmpisr |= I2C_IT_ADDRI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ERRI;
+ }
+
+ if ((InterruptRequest & I2C_XFER_TX_IT) == I2C_XFER_TX_IT)
+ {
+ /* Enable ERR, TC, STOP, NACK and RXI interrupts */
+ tmpisr |= I2C_IT_ERRI | I2C_IT_TCI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_TXI;
+ }
+
+ if ((InterruptRequest & I2C_XFER_RX_IT) == I2C_XFER_RX_IT)
+ {
+ /* Enable ERR, TC, STOP, NACK and TXI interrupts */
+ tmpisr |= I2C_IT_ERRI | I2C_IT_TCI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_RXI;
+ }
+
+ if (InterruptRequest == I2C_XFER_CPLT_IT)
+ {
+ /* Enable STOP interrupts */
+ tmpisr |= I2C_IT_STOPI;
+ }
+ }
+
+ /* Enable interrupts only at the end */
+ /* to avoid the risk of I2C interrupt handle execution before */
+ /* all interrupts requested done */
+ __HAL_I2C_ENABLE_IT(hi2c, tmpisr);
+}
+
+/**
+ * @brief Manage the disabling of Interrupts.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2C.
+ * @param InterruptRequest Value of @ref I2C_Interrupt_configuration_definition.
+ * @retval None
+ */
+static void I2C_Disable_IRQ(I2C_HandleTypeDef *hi2c, uint16_t InterruptRequest)
+{
+ uint32_t tmpisr = 0U;
+
+ if ((InterruptRequest & I2C_XFER_TX_IT) == I2C_XFER_TX_IT)
+ {
+ /* Disable TC and TXI interrupts */
+ tmpisr |= I2C_IT_TCI | I2C_IT_TXI;
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) != (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ /* Disable NACK and STOP interrupts */
+ tmpisr |= I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ERRI;
+ }
+ }
+
+ if ((InterruptRequest & I2C_XFER_RX_IT) == I2C_XFER_RX_IT)
+ {
+ /* Disable TC and RXI interrupts */
+ tmpisr |= I2C_IT_TCI | I2C_IT_RXI;
+
+ if (((uint32_t)hi2c->State & (uint32_t)HAL_I2C_STATE_LISTEN) != (uint32_t)HAL_I2C_STATE_LISTEN)
+ {
+ /* Disable NACK and STOP interrupts */
+ tmpisr |= I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ERRI;
+ }
+ }
+
+ if ((InterruptRequest & I2C_XFER_LISTEN_IT) == I2C_XFER_LISTEN_IT)
+ {
+ /* Disable ADDR, NACK and STOP interrupts */
+ tmpisr |= I2C_IT_ADDRI | I2C_IT_STOPI | I2C_IT_NACKI | I2C_IT_ERRI;
+ }
+
+ if (InterruptRequest == I2C_XFER_ERROR_IT)
+ {
+ /* Enable ERR and NACK interrupts */
+ tmpisr |= I2C_IT_ERRI | I2C_IT_NACKI;
+ }
+
+ if (InterruptRequest == I2C_XFER_CPLT_IT)
+ {
+ /* Enable STOP interrupts */
+ tmpisr |= I2C_IT_STOPI;
+ }
+
+ if (InterruptRequest == I2C_XFER_RELOAD_IT)
+ {
+ /* Enable TC interrupts */
+ tmpisr |= I2C_IT_TCI;
+ }
+
+ /* Disable interrupts only at the end */
+ /* to avoid a breaking situation like at "t" time */
+ /* all disable interrupts request are not done */
+ __HAL_I2C_DISABLE_IT(hi2c, tmpisr);
+}
+
+/**
+ * @brief Convert I2Cx OTHER_xxx XferOptions to functional XferOptions.
+ * @param hi2c I2C handle.
+ * @retval None
+ */
+static void I2C_ConvertOtherXferOptions(I2C_HandleTypeDef *hi2c)
+{
+ /* if user set XferOptions to I2C_OTHER_FRAME */
+ /* it request implicitly to generate a restart condition */
+ /* set XferOptions to I2C_FIRST_FRAME */
+ if (hi2c->XferOptions == I2C_OTHER_FRAME)
+ {
+ hi2c->XferOptions = I2C_FIRST_FRAME;
+ }
+ /* else if user set XferOptions to I2C_OTHER_AND_LAST_FRAME */
+ /* it request implicitly to generate a restart condition */
+ /* then generate a stop condition at the end of transfer */
+ /* set XferOptions to I2C_FIRST_AND_LAST_FRAME */
+ else if (hi2c->XferOptions == I2C_OTHER_AND_LAST_FRAME)
+ {
+ hi2c->XferOptions = I2C_FIRST_AND_LAST_FRAME;
+ }
+ else
+ {
+ /* Nothing to do */
+ }
+}
+
+/**
+ * @}
+ */
+
+#endif /* HAL_I2C_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_i2c_ex.c b/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_i2c_ex.c
new file mode 100644
index 0000000..88b8a2e
--- /dev/null
+++ b/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_i2c_ex.c
@@ -0,0 +1,335 @@
+/**
+ ******************************************************************************
+ * @file stm32g0xx_hal_i2c_ex.c
+ * @author MCD Application Team
+ * @brief I2C Extended HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of I2C Extended peripheral:
+ * + Extended features functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### I2C peripheral Extended features #####
+ ==============================================================================
+
+ [..] Comparing to other previous devices, the I2C interface for STM32G0xx
+ devices contains the following additional features
+
+ (+) Possibility to disable or enable Analog Noise Filter
+ (+) Use of a configured Digital Noise Filter
+ (+) Disable or enable wakeup from Stop mode(s)
+ (+) Disable or enable Fast Mode Plus
+
+ ##### How to use this driver #####
+ ==============================================================================
+ [..] This driver provides functions to configure Noise Filter and Wake Up Feature
+ (#) Configure I2C Analog noise filter using the function HAL_I2CEx_ConfigAnalogFilter()
+ (#) Configure I2C Digital noise filter using the function HAL_I2CEx_ConfigDigitalFilter()
+ (#) Configure the enable or disable of I2C Wake Up Mode using the functions :
+ (++) HAL_I2CEx_EnableWakeUp()
+ (++) HAL_I2CEx_DisableWakeUp()
+ (#) Configure the enable or disable of fast mode plus driving capability using the functions :
+ (++) HAL_I2CEx_EnableFastModePlus()
+ (++) HAL_I2CEx_DisableFastModePlus()
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * © Copyright (c) 2018 STMicroelectronics.
+ * All rights reserved.
+ *
+ * This software component is licensed by ST under BSD 3-Clause license,
+ * the "License"; You may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at:
+ * opensource.org/licenses/BSD-3-Clause
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32g0xx_hal.h"
+
+/** @addtogroup STM32G0xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup I2CEx I2CEx
+ * @brief I2C Extended HAL module driver
+ * @{
+ */
+
+#ifdef HAL_I2C_MODULE_ENABLED
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/** @defgroup I2CEx_Exported_Functions I2C Extended Exported Functions
+ * @{
+ */
+
+/** @defgroup I2CEx_Exported_Functions_Group1 Extended features functions
+ * @brief Extended features functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Extended features functions #####
+ ===============================================================================
+ [..] This section provides functions allowing to:
+ (+) Configure Noise Filters
+ (+) Configure Wake Up Feature
+ (+) Configure Fast Mode Plus
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Configure I2C Analog noise filter.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2Cx peripheral.
+ * @param AnalogFilter New state of the Analog filter.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2CEx_ConfigAnalogFilter(I2C_HandleTypeDef *hi2c, uint32_t AnalogFilter)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+ assert_param(IS_I2C_ANALOG_FILTER(AnalogFilter));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the selected I2C peripheral */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /* Reset I2Cx ANOFF bit */
+ hi2c->Instance->CR1 &= ~(I2C_CR1_ANFOFF);
+
+ /* Set analog filter bit*/
+ hi2c->Instance->CR1 |= AnalogFilter;
+
+ __HAL_I2C_ENABLE(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Configure I2C Digital noise filter.
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2Cx peripheral.
+ * @param DigitalFilter Coefficient of digital noise filter between Min_Data=0x00 and Max_Data=0x0F.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2CEx_ConfigDigitalFilter(I2C_HandleTypeDef *hi2c, uint32_t DigitalFilter)
+{
+ uint32_t tmpreg;
+
+ /* Check the parameters */
+ assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
+ assert_param(IS_I2C_DIGITAL_FILTER(DigitalFilter));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the selected I2C peripheral */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /* Get the old register value */
+ tmpreg = hi2c->Instance->CR1;
+
+ /* Reset I2Cx DNF bits [11:8] */
+ tmpreg &= ~(I2C_CR1_DNF);
+
+ /* Set I2Cx DNF coefficient */
+ tmpreg |= DigitalFilter << 8U;
+
+ /* Store the new register value */
+ hi2c->Instance->CR1 = tmpreg;
+
+ __HAL_I2C_ENABLE(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Enable I2C wakeup from Stop mode(s).
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2Cx peripheral.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2CEx_EnableWakeUp(I2C_HandleTypeDef *hi2c)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_WAKEUP_FROMSTOP_INSTANCE(hi2c->Instance));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the selected I2C peripheral */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /* Enable wakeup from stop mode */
+ hi2c->Instance->CR1 |= I2C_CR1_WUPEN;
+
+ __HAL_I2C_ENABLE(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Disable I2C wakeup from Stop mode(s).
+ * @param hi2c Pointer to a I2C_HandleTypeDef structure that contains
+ * the configuration information for the specified I2Cx peripheral.
+ * @retval HAL status
+ */
+HAL_StatusTypeDef HAL_I2CEx_DisableWakeUp(I2C_HandleTypeDef *hi2c)
+{
+ /* Check the parameters */
+ assert_param(IS_I2C_WAKEUP_FROMSTOP_INSTANCE(hi2c->Instance));
+
+ if (hi2c->State == HAL_I2C_STATE_READY)
+ {
+ /* Process Locked */
+ __HAL_LOCK(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_BUSY;
+
+ /* Disable the selected I2C peripheral */
+ __HAL_I2C_DISABLE(hi2c);
+
+ /* Enable wakeup from stop mode */
+ hi2c->Instance->CR1 &= ~(I2C_CR1_WUPEN);
+
+ __HAL_I2C_ENABLE(hi2c);
+
+ hi2c->State = HAL_I2C_STATE_READY;
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(hi2c);
+
+ return HAL_OK;
+ }
+ else
+ {
+ return HAL_BUSY;
+ }
+}
+
+/**
+ * @brief Enable the I2C fast mode plus driving capability.
+ * @param ConfigFastModePlus Selects the pin.
+ * This parameter can be one of the @ref I2CEx_FastModePlus values
+ * @note For I2C1, fast mode plus driving capability can be enabled on all selected
+ * I2C1 pins using I2C_FASTMODEPLUS_I2C1 parameter or independently
+ * on each one of the following pins PB6, PB7, PB8 and PB9.
+ * @note For remaining I2C1 pins (PA14, PA15...) fast mode plus driving capability
+ * can be enabled only by using I2C_FASTMODEPLUS_I2C1 parameter.
+ * @note For all I2C2 pins fast mode plus driving capability can be enabled
+ * only by using I2C_FASTMODEPLUS_I2C2 parameter.
+ * @note For all I2C3 pins fast mode plus driving capability can be enabled
+ * only by using I2C_FASTMODEPLUS_I2C3 parameter.
+ * @retval None
+ */
+void HAL_I2CEx_EnableFastModePlus(uint32_t ConfigFastModePlus)
+{
+ /* Check the parameter */
+ assert_param(IS_I2C_FASTMODEPLUS(ConfigFastModePlus));
+
+ /* Enable SYSCFG clock */
+ __HAL_RCC_SYSCFG_CLK_ENABLE();
+
+ /* Enable fast mode plus driving capability for selected pin */
+ SET_BIT(SYSCFG->CFGR1, (uint32_t)ConfigFastModePlus);
+}
+
+/**
+ * @brief Disable the I2C fast mode plus driving capability.
+ * @param ConfigFastModePlus Selects the pin.
+ * This parameter can be one of the @ref I2CEx_FastModePlus values
+ * @note For I2C1, fast mode plus driving capability can be disabled on all selected
+ * I2C1 pins using I2C_FASTMODEPLUS_I2C1 parameter or independently
+ * on each one of the following pins PB6, PB7, PB8 and PB9.
+ * @note For remaining I2C1 pins (PA14, PA15...) fast mode plus driving capability
+ * can be disabled only by using I2C_FASTMODEPLUS_I2C1 parameter.
+ * @note For all I2C2 pins fast mode plus driving capability can be disabled
+ * only by using I2C_FASTMODEPLUS_I2C2 parameter.
+ * @note For all I2C3 pins fast mode plus driving capability can be disabled
+ * only by using I2C_FASTMODEPLUS_I2C3 parameter.
+ * @retval None
+ */
+void HAL_I2CEx_DisableFastModePlus(uint32_t ConfigFastModePlus)
+{
+ /* Check the parameter */
+ assert_param(IS_I2C_FASTMODEPLUS(ConfigFastModePlus));
+
+ /* Enable SYSCFG clock */
+ __HAL_RCC_SYSCFG_CLK_ENABLE();
+
+ /* Disable fast mode plus driving capability for selected pin */
+ CLEAR_BIT(SYSCFG->CFGR1, (uint32_t)ConfigFastModePlus);
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* HAL_I2C_MODULE_ENABLED */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/