stm32f7xx_hal_pwr.c

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/* Includes ------------------------------------------------------------------*/
#include "stm32f7xx_hal.h"

#ifdef HAL_PWR_MODULE_ENABLED

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define PVD_MODE_IT               ((uint32_t)0x00010000U)
#define PVD_MODE_EVT              ((uint32_t)0x00020000U)
#define PVD_RISING_EDGE           ((uint32_t)0x00000001U)
#define PVD_FALLING_EDGE          ((uint32_t)0x00000002U)

#define  PWR_EWUP_MASK                          ((uint32_t)0x00003F00)

/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

void HAL_PWR_DeInit(void)
{
  __HAL_RCC_PWR_FORCE_RESET();
  __HAL_RCC_PWR_RELEASE_RESET();
}

void HAL_PWR_EnableBkUpAccess(void)
{
  /* Enable access to RTC and backup registers */
  SET_BIT(PWR->CR1, PWR_CR1_DBP);
}

void HAL_PWR_DisableBkUpAccess(void)
{
  /* Disable access to RTC and backup registers */
    CLEAR_BIT(PWR->CR1, PWR_CR1_DBP);
}

void HAL_PWR_ConfigPVD(PWR_PVDTypeDef *sConfigPVD)
{
  /* Check the parameters */
  assert_param(IS_PWR_PVD_LEVEL(sConfigPVD->PVDLevel));
  assert_param(IS_PWR_PVD_MODE(sConfigPVD->Mode));
  
  /* Set PLS[7:5] bits according to PVDLevel value */
  MODIFY_REG(PWR->CR1, PWR_CR1_PLS, sConfigPVD->PVDLevel);
  
  /* Clear any previous config. Keep it clear if no event or IT mode is selected */
  __HAL_PWR_PVD_EXTI_DISABLE_EVENT();
  __HAL_PWR_PVD_EXTI_DISABLE_IT();
  __HAL_PWR_PVD_EXTI_DISABLE_RISING_EDGE();
  __HAL_PWR_PVD_EXTI_DISABLE_FALLING_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();
  }
}

void HAL_PWR_EnablePVD(void)
{
  /* Enable the power voltage detector */
    SET_BIT(PWR->CR1, PWR_CR1_PVDE);
}

void HAL_PWR_DisablePVD(void)
{
  /* Disable the power voltage detector */
    CLEAR_BIT(PWR->CR1, PWR_CR1_PVDE);
}

void HAL_PWR_EnableWakeUpPin(uint32_t WakeUpPinPolarity)
{
  assert_param(IS_PWR_WAKEUP_PIN(WakeUpPinPolarity));
  
  /* Enable wake-up pin */
  SET_BIT(PWR->CSR2, (PWR_EWUP_MASK & WakeUpPinPolarity));
    
  /* Specifies the Wake-Up pin polarity for the event detection
    (rising or falling edge) */
  MODIFY_REG(PWR->CR2, (PWR_EWUP_MASK & WakeUpPinPolarity), (WakeUpPinPolarity >> 0x06));
}

void HAL_PWR_DisableWakeUpPin(uint32_t WakeUpPinx)
{
  assert_param(IS_PWR_WAKEUP_PIN(WakeUpPinx));

  CLEAR_BIT(PWR->CSR2, WakeUpPinx);
}
  
void HAL_PWR_EnterSLEEPMode(uint32_t Regulator, uint8_t SLEEPEntry)
{
  /* Check the parameters */
  assert_param(IS_PWR_REGULATOR(Regulator));
  assert_param(IS_PWR_SLEEP_ENTRY(SLEEPEntry));

  /* Clear SLEEPDEEP bit of Cortex System Control Register */
  CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPDEEP_Msk));

  /* Select SLEEP mode entry -------------------------------------------------*/
  if(SLEEPEntry == PWR_SLEEPENTRY_WFI)
  {   
    /* Request Wait For Interrupt */
    __WFI();
  }
  else
  {
    /* Request Wait For Event */
    __SEV();
    __WFE();
    __WFE();
  }
}

void HAL_PWR_EnterSTOPMode(uint32_t Regulator, uint8_t STOPEntry)
{
  uint32_t tmpreg = 0;
  
  /* Check the parameters */
  assert_param(IS_PWR_REGULATOR(Regulator));
  assert_param(IS_PWR_STOP_ENTRY(STOPEntry));
  
  /* Select the regulator state in Stop mode ---------------------------------*/
  tmpreg = PWR->CR1;
  /* Clear PDDS and LPDS bits */
  tmpreg &= (uint32_t)~(PWR_CR1_PDDS | PWR_CR1_LPDS);
  
  /* Set LPDS, MRLVDS and LPLVDS bits according to Regulator value */
  tmpreg |= Regulator;
  
  /* Store the new value */
  PWR->CR1 = tmpreg;
  
  /* Set SLEEPDEEP bit of Cortex System Control Register */
  SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
  
  /* Select Stop mode entry --------------------------------------------------*/
  if(STOPEntry == PWR_STOPENTRY_WFI)
  {   
    /* Request Wait For Interrupt */
    __WFI();
  }
  else
  {
    /* Request Wait For Event */
    __SEV();
    __WFE();
    __WFE();
  }
  /* Reset SLEEPDEEP bit of Cortex System Control Register */
  SCB->SCR &= (uint32_t)~((uint32_t)SCB_SCR_SLEEPDEEP_Msk);  
}

void HAL_PWR_EnterSTANDBYMode(void)
{
  /* Select Standby mode */
  PWR->CR1 |= PWR_CR1_PDDS;
  
  /* Set SLEEPDEEP bit of Cortex System Control Register */
  SCB->SCR |= 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();
}

void HAL_PWR_PVD_IRQHandler(void)
{
  /* Check PWR Exti flag */
  if(__HAL_PWR_PVD_EXTI_GET_FLAG() != RESET)
  {
    /* PWR PVD interrupt user callback */
    HAL_PWR_PVDCallback();
    
    /* Clear PWR Exti pending bit */
    __HAL_PWR_PVD_EXTI_CLEAR_FLAG();
  }
}

__weak void HAL_PWR_PVDCallback(void)
{
  /* NOTE : This function Should not be modified, when the callback is needed,
            the HAL_PWR_PVDCallback could be implemented in the user file
   */ 
}

void HAL_PWR_EnableSleepOnExit(void)
{
  /* Set SLEEPONEXIT bit of Cortex System Control Register */
  SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPONEXIT_Msk));
}

void HAL_PWR_DisableSleepOnExit(void)
{
  /* Clear SLEEPONEXIT bit of Cortex System Control Register */
  CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SLEEPONEXIT_Msk));
}

void HAL_PWR_EnableSEVOnPend(void)
{
  /* Set SEVONPEND bit of Cortex System Control Register */
  SET_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SEVONPEND_Msk));
}

void HAL_PWR_DisableSEVOnPend(void)
{
  /* Clear SEVONPEND bit of Cortex System Control Register */
  CLEAR_BIT(SCB->SCR, ((uint32_t)SCB_SCR_SEVONPEND_Msk));
}

#endif /* HAL_PWR_MODULE_ENABLED */

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/