tkl/stm32g0xx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

I2c tx/rx non-blocking

Browse Source
This commit is contained in:
Thomas Klaehn 2021-07-05 16:23:27 +02:00
parent 97862f34a6
commit ea151c4285
3 changed files with 38 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
Core/Src/main.c
View File

@ -8,6 +8,8 @@
UART_HandleTypeDef huart2;
I2C_HandleTypeDef hi2c1;
uint8_t data[2] = {0};
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART2_UART_Init(void);
@ -35,21 +37,26 @@ int main(void)
MX_USART2_UART_Init();
MX_I2C1_Init();
uint8_t data[2] = {0};
data[0] = 1; // Config register
if(HAL_I2C_Master_Transmit(&hi2c1, (uint16_t)(0x48 << 1), data,1, 1000) != HAL_OK) {
if(HAL_I2C_Master_Transmit_IT(&hi2c1, (uint16_t)(0x48 << 1), data, 1) != HAL_OK) {
printf("I2c tx failed.\r\n");
} else {
if(HAL_I2C_Master_Receive(&hi2c1, (uint16_t)(0x48 << 1), data, 2, 1000) != HAL_OK) {
printf("I2c rx failed.\r\n");
} else {
uint16_t config = (uint16_t)(data[0] << 8) | data[1];
printf("ADS1115 config register: 0x%04x\r\n", config);
}
}
while(1) {};
}
void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c)
{
if(HAL_I2C_Master_Receive_IT(&hi2c1, (uint16_t)(0x48 << 1), data, 2) != HAL_OK) {
printf("I2c rx failed.\r\n");
}
}
void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c)
{
uint16_t config = (uint16_t)(data[0] << 8) | data[1];
printf("ADS1115 config register: 0x%04x\r\n", config);
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};

19
Core/Src/stm32g0xx_it.c
View File

@ -1,16 +1,16 @@
#include "main.h"
#include "stm32g0xx_it.h"
extern I2C_HandleTypeDef hi2c1;
void NMI_Handler(void)
{
while (1) {
}
while (1) {}
}
void HardFault_Handler(void)
{
while (1) {
}
while (1) {}
}
void SVC_Handler(void)
@ -23,5 +23,14 @@ void PendSV_Handler(void)
void SysTick_Handler(void)
{
HAL_IncTick();
HAL_IncTick();
}
void I2C1_IRQHandler(void)
{
if(hi2c1.Instance->ISR & (I2C_FLAG_BERR | I2C_FLAG_ARLO | I2C_FLAG_OVR)) {
HAL_I2C_ER_IRQHandler(&hi2c1);
} else {
HAL_I2C_EV_IRQHandler(&hi2c1);
}
}

16
Makefile
View File

@ -12,18 +12,18 @@ Core/Src/stm32g0xx_hal_msp.c \
Core/Src/system_stm32g0xx.c \
Core/Src/syscalls.c \
Core/Src/sysmem.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_rcc.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_cortex.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_rcc_ex.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_gpio.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_dma.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_i2c.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_i2c_ex.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_pwr.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_pwr_ex.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_iwdg.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_rcc.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_rcc_ex.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_uart_ex.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_uart.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_gpio.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_i2c.c \
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_i2c_ex.c
Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_uart.c
ASM_SOURCES = \
Core/Startup/startup_stm32g031y8yx.s
@ -64,7 +64,7 @@ LIBS = -lc -lm -lnosys
LIBDIR =
LDFLAGS = $(MCU) -specs=nano.specs -T$(LDSCRIPT) $(LIBDIR) $(LIBS) -Wl,-Map=$(BUILD_DIR)/$(TARGET).map,--cref -Wl,--gc-sections
all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(TARGET).bin
all: $(BUILD_DIR)/$(TARGET).elf
OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
vpath %.c $(sort $(dir $(C_SOURCES)))