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stm32g0xx/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_hal_pwr_ex.c
Thomas Klaehn d38bd4ae27 Initial commit 
Signed-off-by: Thomas Klaehn <thomas.klaehn@perinet.io>
2020-12-14 16:21:17 +01:00

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/**
******************************************************************************
* @file stm32g0xx_hal_pwr_ex.c
* @author MCD Application Team
* @brief Extended PWR HAL module driver.
* This file provides firmware functions to manage the following
* functionalities of the Power Controller (PWR) peripheral:
* + Extended Initialization and de-initialization functions
* + Extended Peripheral Control functions
*
******************************************************************************
* @attention
*
* <h2><center>&copy; Copyright (c) 2018 STMicroelectronics.
* All rights reserved.</center></h2>
*
* 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
* @{
*/
/** @addtogroup PWREx
* @{
*/
#ifdef HAL_PWR_MODULE_ENABLED
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup PWR_Extended_Private_Defines PWR Extended Private Defines
* @{
*/
#if defined(PWR_PVD_SUPPORT)
/** @defgroup PWR_PVD_Mode_Mask PWR PVD Mode Mask
* @{
*/
#define PVD_MODE_IT 0x00010000U /*!< Mask for interruption yielded
by PVD threshold crossing */
#define PVD_MODE_EVT 0x00020000U /*!< Mask for event yielded
by PVD threshold crossing */
#define PVD_RISING_EDGE 0x00000001U /*!< Mask for rising edge set as
PVD trigger */
#define PVD_FALLING_EDGE 0x00000002U /*!< Mask for falling edge set as
PVD trigger */
/**
* @}
*/
#endif
/** @defgroup PWREx_TimeOut_Value PWREx Flag Setting Time Out Value
* @{
*/
#define PWR_REGLPF_SETTING_DELAY_6_US 6u /*!< REGLPF should rise in about 5 us plus
2 APB clock. Taking in account max Sysclk at
2 MHz, and rounded to upper value */
#define PWR_VOSF_SETTING_DELAY_6_US 6u /*!< VOSF should rise in about 5 us plus
2 APB clock. Taking in account max Sysclk at
16 MHz, and rounded to upper value */
/**
* @}
*/
/** @defgroup PWREx_Gpio_Pin_Number PWREx Gpio Pin Number
* @{
*/
#define PWR_GPIO_PIN_NB 16u /*!< Number of gpio pin in bank */
/**
* @}
*/
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Exported functions --------------------------------------------------------*/
/** @addtogroup PWREx_Exported_Functions PWR Extended Exported Functions
* @{
*/
/** @addtogroup PWREx_Exported_Functions_Group1 Extended Peripheral Control functions
* @brief Extended Peripheral Control functions
*
@verbatim
===============================================================================
##### Extended Peripheral Initialization and de-initialization functions #####
===============================================================================
[..]
*** PVD configuration ***
=========================
[..]
(+) The PVD is used to monitor the VDD power supply by comparing it to a
threshold selected by the PVD Level (PVDRT[2:0] & PVDFT[2:0] bits in
PWR CR2 register).
(+) PVDO flag is available to indicate if VDD/VDDA is higher or lower
than the PVD threshold. This event is internally connected to the EXTI
line 16 and can generate an interrupt if enabled.
(+) The PVD is stopped in Standby & Shutdown mode.
*** PVM configuration ***
=========================
[..]
@endverbatim
* @{
*/
/**
* @brief Enable battery charging.
* @note When VDD is present, charge the external battery on VBAT through an
* internal resistor.
* @param ResistorSelection specifies the resistor impedance.
* This parameter can be one of the following values:
* @arg @ref PWR_BATTERY_CHARGING_RESISTOR_5 5 kOhms resistor
* @arg @ref PWR_BATTERY_CHARGING_RESISTOR_1_5 1.5 kOhms resistor
* @retval None
*/
void HAL_PWREx_EnableBatteryCharging(uint32_t ResistorSelection)
{
uint32_t tmpreg;
assert_param(IS_PWR_BATTERY_RESISTOR_SELECT(ResistorSelection));
/* Specify resistor selection and enable battery charging */
tmpreg = (PWR->CR4 & ~PWR_CR4_VBRS);
PWR->CR4 = (tmpreg | ResistorSelection | PWR_CR4_VBE);
}
/**
* @brief Disable battery charging.
* @retval None
*/
void HAL_PWREx_DisableBatteryCharging(void)
{
CLEAR_BIT(PWR->CR4, PWR_CR4_VBE);
}
#if defined(PWR_CR3_ENB_ULP)
/**
* @brief Enable POR Monitor sampling mode.
* @note When entering ultra low power modes (standby, shutdown) this feature
* can be enabled to reduce further consumption: Power On Reset monitor
* is then set in sampling mode, and no more in always on mode.
* @retval None
*/
void HAL_PWREx_EnablePORMonitorSampling(void)
{
PWR->CR3 |= PWR_CR3_ENB_ULP;
}
/**
* @brief Disable POR Monitor sampling mode.
* @retval None
*/
void HAL_PWREx_DisablePORMonitorSampling(void)
{
PWR->CR3 &= ~PWR_CR3_ENB_ULP;
}
#endif
#if defined(PWR_PVD_SUPPORT)
/**
* @brief Configure the Power Voltage Detector (PVD).
* @param sConfigPVD pointer to a PWR_PVDTypeDef structure that contains the
PVD configuration information: threshold levels, operating mode.
* @note Refer to the electrical characteristics of your device datasheet for
* more details about the voltage thresholds corresponding to each
* detection level.
* @note User should take care that rising threshold is higher than falling
* one in order to avoid having always PVDO output set.
* @retval HAL_OK
*/
HAL_StatusTypeDef HAL_PWREx_ConfigPVD(PWR_PVDTypeDef *sConfigPVD)
{
/* Check the parameters */
assert_param(IS_PWR_PVD_LEVEL(sConfigPVD->PVDLevel));
assert_param(IS_PWR_PVD_MODE(sConfigPVD->Mode));
/* Set PVD level bits only according to PVDLevel value */
MODIFY_REG(PWR->CR2, (PWR_CR2_PVDFT | PWR_CR2_PVDRT), sConfigPVD->PVDLevel);
/* Clear any previous config, in case no event or IT mode is selected */
__HAL_PWR_PVD_EXTI_DISABLE_EVENT();
__HAL_PWR_PVD_EXTI_DISABLE_IT();
__HAL_PWR_PVD_EXTI_DISABLE_FALLING_EDGE();
__HAL_PWR_PVD_EXTI_DISABLE_RISING_EDGE();
/* Configure interrupt mode */
if((sConfigPVD->Mode & PVD_MODE_IT) == PVD_MODE_IT)
{
__HAL_PWR_PVD_EXTI_ENABLE_IT();
}
/* Configure event mode */
if((sConfigPVD->Mode & PVD_MODE_EVT) == PVD_MODE_EVT)
{
__HAL_PWR_PVD_EXTI_ENABLE_EVENT();
}
/* Configure the edge */
if((sConfigPVD->Mode & PVD_RISING_EDGE) == PVD_RISING_EDGE)
{
__HAL_PWR_PVD_EXTI_ENABLE_RISING_EDGE();
}
if((sConfigPVD->Mode & PVD_FALLING_EDGE) == PVD_FALLING_EDGE)
{
__HAL_PWR_PVD_EXTI_ENABLE_FALLING_EDGE();
}
return HAL_OK;
}
/**
* @brief Enable the Power Voltage Detector (PVD).
* @retval None
*/
void HAL_PWREx_EnablePVD(void)
{
SET_BIT(PWR->CR2, PWR_CR2_PVDE);
}
/**
* @brief Disable the Power Voltage Detector (PVD).
* @retval None
*/
void HAL_PWREx_DisablePVD(void)
{
CLEAR_BIT(PWR->CR2, PWR_CR2_PVDE);
}
#endif
#if defined(PWR_PVM_SUPPORT)
/**
* @brief Enable VDDUSB supply.
* @note Remove VDDUSB electrical and logical isolation, once VDDUSB supply is present.
* @retval None
*/
void HAL_PWREx_EnableVddUSB(void)
{
SET_BIT(PWR->CR2, PWR_CR2_USV);
}
/**
* @brief Disable VDDUSB supply.
* @retval None
*/
void HAL_PWREx_DisableVddUSB(void)
{
CLEAR_BIT(PWR->CR2, PWR_CR2_USV);
}
#endif
#if defined(PWR_CR2_IOSV)
/**
* @brief Enable VDDIO2 supply.
* @note Remove VDDIO2 electrical and logical isolation, once VDDIO2 supply is present.
* @retval None
*/
void HAL_PWREx_EnableVddIO2(void)
{
SET_BIT(PWR->CR2, PWR_CR2_IOSV);
}
/**
* @brief Disable VDDIO2 supply.
* @retval None
*/
void HAL_PWREx_DisableVddIO2(void)
{
CLEAR_BIT(PWR->CR2, PWR_CR2_IOSV);
}
#endif /* PWR_CR2_IOSV */
#if defined (PWR_PVM_SUPPORT)
/**
* @brief Enable the Power Voltage Monitoring for USB peripheral (power domain Vddio2)
* @retval None
*/
void HAL_PWREx_EnablePVMUSB(void)
{
SET_BIT(PWR->CR2, PWR_PVM_USB);
}
/**
* @brief Disable the Power Voltage Monitoring for USB peripheral (power domain Vddio2)
* @retval None
*/
void HAL_PWREx_DisablePVMUSB(void)
{
CLEAR_BIT(PWR->CR2, PWR_PVM_USB);
}
#endif
#if defined(PWR_PVM_SUPPORT)
/**
* @brief Configure the Peripheral Voltage Monitoring (PVM).
* @param sConfigPVM: pointer to a PWR_PVMTypeDef structure that contains the
* PVM configuration information.
* @note The API configures a single PVM according to the information contained
* in the input structure. To configure several PVMs, the API must be singly
* called for each PVM used.
* @note Refer to the electrical characteristics of your device datasheet for
* more details about the voltage thresholds corresponding to each
* detection level and to each monitored supply.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PWREx_ConfigPVM(PWR_PVMTypeDef *sConfigPVM)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the parameters */
assert_param(IS_PWR_PVM_TYPE(sConfigPVM->PVMType));
assert_param(IS_PWR_PVM_MODE(sConfigPVM->Mode));
/* Configure EXTI 34 interrupts if so required:
scan through PVMType to detect which PVMx is set and
configure the corresponding EXTI line accordingly. */
switch (sConfigPVM->PVMType)
{
case PWR_PVM_USB:
/* Clear any previous config. Keep it clear if no event or IT mode is selected */
__HAL_PWR_PVM_EXTI_DISABLE_EVENT();
__HAL_PWR_PVM_EXTI_DISABLE_IT();
__HAL_PWR_PVM_EXTI_DISABLE_FALLING_EDGE();
__HAL_PWR_PVM_EXTI_DISABLE_RISING_EDGE();
/* Configure interrupt mode */
if((sConfigPVM->Mode & PVM_MODE_IT) == PVM_MODE_IT)
{
__HAL_PWR_PVM_EXTI_ENABLE_IT();
}
/* Configure event mode */
if((sConfigPVM->Mode & PVM_MODE_EVT) == PVM_MODE_EVT)
{
__HAL_PWR_PVM_EXTI_ENABLE_EVENT();
}
/* Configure the edge */
if((sConfigPVM->Mode & PVM_RISING_EDGE) == PVM_RISING_EDGE)
{
__HAL_PWR_PVM_EXTI_ENABLE_RISING_EDGE();
}
if((sConfigPVM->Mode & PVM_FALLING_EDGE) == PVM_FALLING_EDGE)
{
__HAL_PWR_PVM_EXTI_ENABLE_FALLING_EDGE();
}
break;
default:
status = HAL_ERROR;
break;
}
return status;
}
#endif
/**
* @brief Enable Internal Wake-up Line.
* @retval None
*/
void HAL_PWREx_EnableInternalWakeUpLine(void)
{
SET_BIT(PWR->CR3, PWR_CR3_EIWUL);
}
/**
* @brief Disable Internal Wake-up Line.
* @retval None
*/
void HAL_PWREx_DisableInternalWakeUpLine(void)
{
CLEAR_BIT(PWR->CR3, PWR_CR3_EIWUL);
}
/**
* @brief Enable GPIO pull-up state in Standby and Shutdown modes.
* @note Set the relevant PUy bit of PWR_PUCRx register to configure the I/O in
* pull-up state in Standby and Shutdown modes.
* @note This state is effective in Standby and Shutdown modes only if APC bit
* is set through HAL_PWREx_EnablePullUpPullDownConfig() API.
* @note The configuration is lost when exiting the Shutdown mode due to the
* power-on reset, maintained when exiting the Standby mode.
* @note To avoid any conflict at Standby and Shutdown modes exits, the corresponding
* PDy bit of PWR_PDCRx register is cleared unless it is reserved.
* @param GPIO Specify the IO port. This parameter can be PWR_GPIO_A, ..., PWR_GPIO_F
* to select the GPIO peripheral.
* @param GPIONumber Specify the I/O pins numbers.
* This parameter can be one of the following values:
* PWR_GPIO_BIT_0, ..., PWR_GPIO_BIT_15 (except for ports where less
* I/O pins are available) or the logical OR of several of them to set
* several bits for a given port in a single API call.
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_PWREx_EnableGPIOPullUp(uint32_t GPIO, uint32_t GPIONumber)
{
HAL_StatusTypeDef status = HAL_OK;
assert_param(IS_PWR_GPIO(GPIO));
assert_param(IS_PWR_GPIO_BIT_NUMBER(GPIONumber));
switch (GPIO)
{
case PWR_GPIO_A:
SET_BIT(PWR->PUCRA, (GPIONumber & ~PWR_GPIO_BIT_14));
CLEAR_BIT(PWR->PDCRA, (GPIONumber & ~PWR_GPIO_BIT_13));
break;
case PWR_GPIO_B:
SET_BIT(PWR->PUCRB, GPIONumber);
CLEAR_BIT(PWR->PDCRB, GPIONumber);
break;
case PWR_GPIO_C:
SET_BIT(PWR->PUCRC, GPIONumber);
CLEAR_BIT(PWR->PDCRC, GPIONumber);
break;
case PWR_GPIO_D:
SET_BIT(PWR->PUCRD, GPIONumber);
CLEAR_BIT(PWR->PDCRD, GPIONumber);
break;
#if defined(GPI0E)
case PWR_GPIO_E:
SET_BIT(PWR->PUCRE, GPIONumber);
CLEAR_BIT(PWR->PDCRE, GPIONumber);
break;
#endif
case PWR_GPIO_F:
SET_BIT(PWR->PUCRF, GPIONumber);
CLEAR_BIT(PWR->PDCRF, GPIONumber);
break;
default:
status = HAL_ERROR;
break;
}
return status;
}
/**
* @brief Disable GPIO pull-up state in Standby mode and Shutdown modes.
* @note Reset the relevant PUy bit of PWR_PUCRx register used to configure the I/O
* in pull-up state in Standby and Shutdown modes.
* @param GPIO Specifies the IO port. This parameter can be PWR_GPIO_A, ..., PWR_GPIO_F
* to select the GPIO peripheral.
* @param GPIONumber Specify the I/O pins numbers.
* This parameter can be one of the following values:
* PWR_GPIO_BIT_0, ..., PWR_GPIO_BIT_15 (except for ports where less
* I/O pins are available) or the logical OR of several of them to reset
* several bits for a given port in a single API call.
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_PWREx_DisableGPIOPullUp(uint32_t GPIO, uint32_t GPIONumber)
{
HAL_StatusTypeDef status = HAL_OK;
assert_param(IS_PWR_GPIO(GPIO));
assert_param(IS_PWR_GPIO_BIT_NUMBER(GPIONumber));
switch (GPIO)
{
case PWR_GPIO_A:
CLEAR_BIT(PWR->PUCRA, (GPIONumber & ~PWR_GPIO_BIT_14));
break;
case PWR_GPIO_B:
CLEAR_BIT(PWR->PUCRB, GPIONumber);
break;
case PWR_GPIO_C:
CLEAR_BIT(PWR->PUCRC, GPIONumber);
break;
case PWR_GPIO_D:
CLEAR_BIT(PWR->PUCRD, GPIONumber);
break;
#if defined(GPI0E)
case PWR_GPIO_E:
CLEAR_BIT(PWR->PUCRE, GPIONumber);
break;
#endif
case PWR_GPIO_F:
CLEAR_BIT(PWR->PUCRF, GPIONumber);
break;
default:
status = HAL_ERROR;
break;
}
return status;
}
/**
* @brief Enable GPIO pull-down state in Standby and Shutdown modes.
* @note Set the relevant PDy bit of PWR_PDCRx register to configure the I/O in
* pull-down state in Standby and Shutdown modes.
* @note This state is effective in Standby and Shutdown modes only if APC bit
* is set through HAL_PWREx_EnablePullUpPullDownConfig() API.
* @note The configuration is lost when exiting the Shutdown mode due to the
* power-on reset, maintained when exiting the Standby mode.
* @note To avoid any conflict at Standby and Shutdown modes exits, the corresponding
* PUy bit of PWR_PUCRx register is cleared unless it is reserved.
* @param GPIO Specify the IO port. This parameter can be PWR_GPIO_A..PWR_GPIO_F
* to select the GPIO peripheral.
* @param GPIONumber Specify the I/O pins numbers.
* This parameter can be one of the following values:
* PWR_GPIO_BIT_0, ..., PWR_GPIO_BIT_15 (except for ports where less
* I/O pins are available) or the logical OR of several of them to set
* several bits for a given port in a single API call.
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_PWREx_EnableGPIOPullDown(uint32_t GPIO, uint32_t GPIONumber)
{
HAL_StatusTypeDef status = HAL_OK;
assert_param(IS_PWR_GPIO(GPIO));
assert_param(IS_PWR_GPIO_BIT_NUMBER(GPIONumber));
switch (GPIO)
{
case PWR_GPIO_A:
SET_BIT(PWR->PDCRA, (GPIONumber & ~PWR_GPIO_BIT_13));
CLEAR_BIT(PWR->PUCRA, (GPIONumber & ~PWR_GPIO_BIT_14));
break;
case PWR_GPIO_B:
SET_BIT(PWR->PDCRB, GPIONumber);
CLEAR_BIT(PWR->PUCRB, GPIONumber);
break;
case PWR_GPIO_C:
SET_BIT(PWR->PDCRC, GPIONumber);
CLEAR_BIT(PWR->PUCRC, GPIONumber);
break;
case PWR_GPIO_D:
SET_BIT(PWR->PDCRD, GPIONumber);
CLEAR_BIT(PWR->PUCRD, GPIONumber);
break;
#if defined(GPIOE)
case PWR_GPIO_E:
SET_BIT(PWR->PDCRE, GPIONumber);
CLEAR_BIT(PWR->PUCRE, GPIONumber);
break;
#endif
case PWR_GPIO_F:
SET_BIT(PWR->PDCRF, GPIONumber);
CLEAR_BIT(PWR->PUCRF, GPIONumber);
break;
default:
status = HAL_ERROR;
break;
}
return status;
}
/**
* @brief Disable GPIO pull-down state in Standby and Shutdown modes.
* @note Reset the relevant PDy bit of PWR_PDCRx register used to configure the I/O
* in pull-down state in Standby and Shutdown modes.
* @param GPIO Specifies the IO port. This parameter can be PWR_GPIO_A..PWR_GPIO_F
* to select the GPIO peripheral.
* @param GPIONumber Specify the I/O pins numbers.
* This parameter can be one of the following values:
* PWR_GPIO_BIT_0, ..., PWR_GPIO_BIT_15 (except for ports where less
* I/O pins are available) or the logical OR of several of them to reset
* several bits for a given port in a single API call.
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_PWREx_DisableGPIOPullDown(uint32_t GPIO, uint32_t GPIONumber)
{
HAL_StatusTypeDef status = HAL_OK;
assert_param(IS_PWR_GPIO(GPIO));
assert_param(IS_PWR_GPIO_BIT_NUMBER(GPIONumber));
switch (GPIO)
{
case PWR_GPIO_A:
CLEAR_BIT(PWR->PDCRA, (GPIONumber & ~PWR_GPIO_BIT_13));
break;
case PWR_GPIO_B:
CLEAR_BIT(PWR->PDCRB, GPIONumber);
break;
case PWR_GPIO_C:
CLEAR_BIT(PWR->PDCRC, GPIONumber);
break;
case PWR_GPIO_D:
CLEAR_BIT(PWR->PDCRD, GPIONumber);
break;
#if defined(GPIOE)
case PWR_GPIO_E:
CLEAR_BIT(PWR->PDCRE, GPIONumber);
break;
#endif
case PWR_GPIO_F:
CLEAR_BIT(PWR->PDCRF, GPIONumber);
break;
default:
status = HAL_ERROR;
break;
}
return status;
}
/**
* @brief Enable pull-up and pull-down configuration.
* @note When APC bit is set, the I/O pull-up and pull-down configurations defined in
* PWR_PUCRx and PWR_PDCRx registers are applied in Standby and Shutdown modes.
* @note Pull-up set by PUy bit of PWR_PUCRx register is not activated if the corresponding
* PDy bit of PWR_PDCRx register is also set (pull-down configuration priority is higher).
* HAL_PWREx_EnableGPIOPullUp() and HAL_PWREx_EnableGPIOPullDown() APIs ensure there
* is no conflict when setting PUy or PDy bit.
* @retval None
*/
void HAL_PWREx_EnablePullUpPullDownConfig(void)
{
SET_BIT(PWR->CR3, PWR_CR3_APC);
}
/**
* @brief Disable pull-up and pull-down configuration.
* @note When APC bit is cleared, the I/O pull-up and pull-down configurations defined in
* PWR_PUCRx and PWR_PDCRx registers are not applied in Standby and Shutdown modes.
* @retval None
*/
void HAL_PWREx_DisablePullUpPullDownConfig(void)
{
CLEAR_BIT(PWR->CR3, PWR_CR3_APC);
}
#if defined(PWR_CR3_RRS)
/**
* @brief Enable SRAM content retention in Standby mode.
* @note When RRS bit is set, SRAM is powered by the low-power regulator in
* Standby mode and its content is kept.
* @retval None
*/
void HAL_PWREx_EnableSRAMRetention(void)
{
SET_BIT(PWR->CR3, PWR_CR3_RRS);
}
/**
* @brief Disable SRAM content retention in Standby mode.
* @note When RRS bit is reset, SRAM is powered off in Standby mode
* and its content is lost.
* @retval None
*/
void HAL_PWREx_DisableSRAMRetention(void)
{
CLEAR_BIT(PWR->CR3, PWR_CR3_RRS);
}
#endif
/**
* @brief Enable Flash Power Down.
* @note This API allows to enable flash power down capabilities in low power
* run, low power sleep and stop modes.
* @param PowerMode this can be a combination of following values:
* @arg @ref PWR_FLASHPD_LPRUN
* @arg @ref PWR_FLASHPD_LPSLEEP
* @arg @ref PWR_FLASHPD_STOP
* @retval None
*/
void HAL_PWREx_EnableFlashPowerDown(uint32_t PowerMode)
{
assert_param(IS_PWR_FLASH_POWERDOWN(PowerMode));
PWR->CR1 |= PowerMode;
}
/**
* @brief Disable Flash Power Down.
* @note This API allows to disable flash power down capabilities in low power
* run, low power sleep and stop modes.
* @param PowerMode this can be a combination of following values:
* @arg @ref PWR_FLASHPD_LPRUN
* @arg @ref PWR_FLASHPD_LPSLEEP
* @arg @ref PWR_FLASHPD_STOP
* @retval None
*/
void HAL_PWREx_DisableFlashPowerDown(uint32_t PowerMode)
{
assert_param(IS_PWR_FLASH_POWERDOWN(PowerMode));
PWR->CR1 &= ~PowerMode;
}
/**
* @brief Return Voltage Scaling Range.
* @retval VOS bit field:
* @arg @ref PWR_REGULATOR_VOLTAGE_SCALE1
* @arg @ref PWR_REGULATOR_VOLTAGE_SCALE2
*/
uint32_t HAL_PWREx_GetVoltageRange(void)
{
return (PWR->CR1 & PWR_CR1_VOS);
}
/**
* @brief Configure the main regulator output voltage.
* @param VoltageScaling specifies the regulator output voltage to achieve
* a tradeoff between performance and power consumption.
* This parameter can be one of the following values:
* @arg @ref PWR_REGULATOR_VOLTAGE_SCALE1 Regulator voltage output range 1 mode,
* typical output voltage at 1.2 V,
* system frequency up to 64 MHz.
* @arg @ref PWR_REGULATOR_VOLTAGE_SCALE2 Regulator voltage output range 2 mode,
* typical output voltage at 1.0 V,
* system frequency up to 16 MHz.
* @note When moving from Range 1 to Range 2, the system frequency must be decreased to
* a value below 16 MHz before calling HAL_PWREx_ControlVoltageScaling() API.
* When moving from Range 2 to Range 1, the system frequency can be increased to
* a value up to 64 MHz after calling HAL_PWREx_ControlVoltageScaling() API.
* @note When moving from Range 2 to Range 1, the API waits for VOSF flag to be
* cleared before returning the status. If the flag is not cleared within
* 6 microseconds, HAL_TIMEOUT status is reported.
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_PWREx_ControlVoltageScaling(uint32_t VoltageScaling)
{
uint32_t wait_loop_index;
assert_param(IS_PWR_VOLTAGE_SCALING_RANGE(VoltageScaling));
/* Modify voltage scaling range */
MODIFY_REG(PWR->CR1, PWR_CR1_VOS, VoltageScaling);
/* In case of Range 1 selected, we need to ensure that main regulator reaches new value */
if(VoltageScaling == PWR_REGULATOR_VOLTAGE_SCALE1)
{
/* Set timeout value */
wait_loop_index = ((PWR_VOSF_SETTING_DELAY_6_US * SystemCoreClock ) / 1000000U) + 1U;
/* Wait until VOSF is reset */
while(HAL_IS_BIT_SET(PWR->SR2, PWR_SR2_VOSF))
{
if(wait_loop_index != 0U)
{
wait_loop_index--;
}
else
{
return HAL_TIMEOUT;
}
}
}
return HAL_OK;
}
/**
* @brief Enter Low-power Run mode
* @note System clock frequency has to be decreased below 2 MHz before entering
* low power run mode
* @note In Low-power Run mode, all I/O pins keep the same state as in Run mode.
* @retval None
*/
void HAL_PWREx_EnableLowPowerRunMode(void)
{
/* Set Regulator parameter */
SET_BIT(PWR->CR1, PWR_CR1_LPR);
}
/**
* @brief Exit Low-power Run mode.
* @note Before HAL_PWREx_DisableLowPowerRunMode() completion, the function checks that
* REGLPF has been properly reset (otherwise, HAL_PWREx_DisableLowPowerRunMode
* returns HAL_TIMEOUT status). The system clock frequency can then be
* increased above 2 MHz.
* @retval HAL Status
*/
HAL_StatusTypeDef HAL_PWREx_DisableLowPowerRunMode(void)
{
uint32_t wait_loop_index = ((PWR_REGLPF_SETTING_DELAY_6_US * SystemCoreClock ) / 1000000U) + 1U;
/* Clear LPR bit */
CLEAR_BIT(PWR->CR1, PWR_CR1_LPR);
/* Wait until REGLPF is reset */
while(HAL_IS_BIT_SET(PWR->SR2, PWR_SR2_REGLPF))
{
if(wait_loop_index != 0U)
{
wait_loop_index--;
}
else
{
return HAL_TIMEOUT;
}
}
return HAL_OK;
}
#if defined(PWR_SHDW_SUPPORT)
/**
* @brief Enter Shutdown mode.
* @note In Shutdown mode, the PLL, the HSI, the LSI and the HSE oscillators are switched
* off. The voltage regulator is disabled and Vcore domain is powered off.
* SRAM and registers contents are lost except for registers in the Backup domain.
* The BOR is not available.
* @note The I/Os can be configured either with a pull-up or pull-down or can
* be kept in analog state.
* HAL_PWREx_EnableGPIOPullUp() and HAL_PWREx_EnableGPIOPullDown()
* respectively enable Pull Up and PullDown state.
* HAL_PWREx_DisableGPIOPullUp() & HAL_PWREx_DisableGPIOPullDown()
* disable the same. These states are effective in Standby mode only if
* APC bit is set through HAL_PWREx_EnablePullUpPullDownConfig() API.
* @retval None
* @retval None
*/
void HAL_PWREx_EnterSHUTDOWNMode(void)
{
/* Set Shutdown mode */
MODIFY_REG(PWR->CR1, PWR_CR1_LPMS, PWR_LOWPOWERMODE_SHUTDOWN);
/* Set SLEEPDEEP bit of Cortex System Control Register */
SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));
/* This option is used to ensure that store operations are completed */
#if defined ( __CC_ARM)
__force_stores();
#endif
/* Request Wait For Interrupt */
__WFI();
}
#endif
#if defined(PWR_PVD_SUPPORT) && defined(PWR_PVM_SUPPORT)
/**
* @brief This function handles the PWR PVD interrupt request.
* @note This API should be called under the PVD_IRQHandler().
* @retval None
*/
void HAL_PWREx_PVD_PVM_IRQHandler(void)
{
/* Check PWR PVD exti Rising flag */
if(__HAL_PWR_PVD_EXTI_GET_RISING_FLAG() != 0x0U)
{
/* Clear PVD exti pending bit */
__HAL_PWR_PVD_EXTI_CLEAR_RISING_FLAG();
/* PWR PVD interrupt rising user callback */
HAL_PWREx_PVD_PVM_Rising_Callback();
}
/* Check PWR exti fallling flag */
if(__HAL_PWR_PVD_EXTI_GET_FALLING_FLAG() != 0x0U)
{
/* Clear PVD exti pending bit */
__HAL_PWR_PVD_EXTI_CLEAR_FALLING_FLAG();
/* PWR PVD interrupt falling user callback */
HAL_PWREx_PVD_PVM_Falling_Callback();
}
/* Check PWR PVM exti Rising flag */
if(__HAL_PWR_PVM_EXTI_GET_RISING_FLAG() != 0x0U)
{
/* Clear PVM exti pending bit */
__HAL_PWR_PVM_EXTI_CLEAR_RISING_FLAG();
/* PWR PVD PVM interrupt rising user callback */
HAL_PWREx_PVD_PVM_Rising_Callback();
}
/* Check PWR PVM exti fallling flag */
if(__HAL_PWR_PVM_EXTI_GET_FALLING_FLAG() != 0x0U)
{
/* Clear PVM exti pending bit */
__HAL_PWR_PVM_EXTI_CLEAR_FALLING_FLAG();
/* PWR PVM interrupt falling user callback */
HAL_PWREx_PVD_PVM_Falling_Callback();
}
}
/**
* @brief PWR PVD interrupt rising callback
* @retval None
*/
__weak void HAL_PWREx_PVD_PVM_Rising_Callback(void)
{
/* NOTE : This function should not be modified; when the callback is needed,
the HAL_PWR_PVD_Rising_Callback can be implemented in the user file
*/
}
/**
* @brief PWR PVD interrupt Falling callback
* @retval None
*/
__weak void HAL_PWREx_PVD_PVM_Falling_Callback(void)
{
/* NOTE : This function should not be modified; when the callback is needed,
the HAL_PWR_PVD_Falling_Callback can be implemented in the user file
*/
}
#elif defined(PWR_PVD_SUPPORT)
/**
* @brief This function handles the PWR PVD interrupt request.
* @note This API should be called under the PVD_IRQHandler().
* @retval None
*/
void HAL_PWREx_PVD_IRQHandler(void)
{
/* Check PWR exti Rising flag */
if(__HAL_PWR_PVD_EXTI_GET_RISING_FLAG() != 0x0U)
{
/* Clear PVD exti pending bit */
__HAL_PWR_PVD_EXTI_CLEAR_RISING_FLAG();
/* PWR PVD interrupt rising user callback */
HAL_PWREx_PVD_Rising_Callback();
}
/* Check PWR exti fallling flag */
if(__HAL_PWR_PVD_EXTI_GET_FALLING_FLAG() != 0x0U)
{
/* Clear PVD exti pending bit */
__HAL_PWR_PVD_EXTI_CLEAR_FALLING_FLAG();
/* PWR PVD interrupt falling user callback */
HAL_PWREx_PVD_Falling_Callback();
}
}
/**
* @brief PWR PVD interrupt rising callback
* @retval None
*/
__weak void HAL_PWREx_PVD_Rising_Callback(void)
{
/* NOTE : This function should not be modified; when the callback is needed,
the HAL_PWR_PVD_Rising_Callback can be implemented in the user file
*/
}
/**
* @brief PWR PVD interrupt Falling callback
* @retval None
*/
__weak void HAL_PWREx_PVD_Falling_Callback(void)
{
/* NOTE : This function should not be modified; when the callback is needed,
the HAL_PWR_PVD_Falling_Callback can be implemented in the user file
*/
}
#endif
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_PWR_MODULE_ENABLED */
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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