/opt/STM32F10x_StdPeriph_Lib_V3.5.0/Libraries/STM32F10x_StdPeriph_Driver/src/stm32f10x_rtc.c

Go to the documentation of this file.

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_rtc.h"

#define RTC_LSB_MASK     ((uint32_t)0x0000FFFF)  
#define PRLH_MSB_MASK    ((uint32_t)0x000F0000)  
void RTC_ITConfig(uint16_t RTC_IT, FunctionalState NewState)
{
  /* Check the parameters */
  assert_param(IS_RTC_IT(RTC_IT));  
  assert_param(IS_FUNCTIONAL_STATE(NewState));
  
  if (NewState != DISABLE)
  {
    RTC->CRH |= RTC_IT;
  }
  else
  {
    RTC->CRH &= (uint16_t)~RTC_IT;
  }
}

void RTC_EnterConfigMode(void)
{
  /* Set the CNF flag to enter in the Configuration Mode */
  RTC->CRL |= RTC_CRL_CNF;
}

void RTC_ExitConfigMode(void)
{
  /* Reset the CNF flag to exit from the Configuration Mode */
  RTC->CRL &= (uint16_t)~((uint16_t)RTC_CRL_CNF); 
}

uint32_t RTC_GetCounter(void)
{
  uint16_t tmp = 0;
  tmp = RTC->CNTL;
  return (((uint32_t)RTC->CNTH << 16 ) | tmp) ;
}

void RTC_SetCounter(uint32_t CounterValue)
{ 
  RTC_EnterConfigMode();
  /* Set RTC COUNTER MSB word */
  RTC->CNTH = CounterValue >> 16;
  /* Set RTC COUNTER LSB word */
  RTC->CNTL = (CounterValue & RTC_LSB_MASK);
  RTC_ExitConfigMode();
}

void RTC_SetPrescaler(uint32_t PrescalerValue)
{
  /* Check the parameters */
  assert_param(IS_RTC_PRESCALER(PrescalerValue));
  
  RTC_EnterConfigMode();
  /* Set RTC PRESCALER MSB word */
  RTC->PRLH = (PrescalerValue & PRLH_MSB_MASK) >> 16;
  /* Set RTC PRESCALER LSB word */
  RTC->PRLL = (PrescalerValue & RTC_LSB_MASK);
  RTC_ExitConfigMode();
}

void RTC_SetAlarm(uint32_t AlarmValue)
{  
  RTC_EnterConfigMode();
  /* Set the ALARM MSB word */
  RTC->ALRH = AlarmValue >> 16;
  /* Set the ALARM LSB word */
  RTC->ALRL = (AlarmValue & RTC_LSB_MASK);
  RTC_ExitConfigMode();
}

uint32_t RTC_GetDivider(void)
{
  uint32_t tmp = 0x00;
  tmp = ((uint32_t)RTC->DIVH & (uint32_t)0x000F) << 16;
  tmp |= RTC->DIVL;
  return tmp;
}

void RTC_WaitForLastTask(void)
{
  /* Loop until RTOFF flag is set */
  while ((RTC->CRL & RTC_FLAG_RTOFF) == (uint16_t)RESET)
  {
  }
}

void RTC_WaitForSynchro(void)
{
  /* Clear RSF flag */
  RTC->CRL &= (uint16_t)~RTC_FLAG_RSF;
  /* Loop until RSF flag is set */
  while ((RTC->CRL & RTC_FLAG_RSF) == (uint16_t)RESET)
  {
  }
}

FlagStatus RTC_GetFlagStatus(uint16_t RTC_FLAG)
{
  FlagStatus bitstatus = RESET;
  
  /* Check the parameters */
  assert_param(IS_RTC_GET_FLAG(RTC_FLAG)); 
  
  if ((RTC->CRL & RTC_FLAG) != (uint16_t)RESET)
  {
    bitstatus = SET;
  }
  else
  {
    bitstatus = RESET;
  }
  return bitstatus;
}

void RTC_ClearFlag(uint16_t RTC_FLAG)
{
  /* Check the parameters */
  assert_param(IS_RTC_CLEAR_FLAG(RTC_FLAG)); 
    
  /* Clear the corresponding RTC flag */
  RTC->CRL &= (uint16_t)~RTC_FLAG;
}

ITStatus RTC_GetITStatus(uint16_t RTC_IT)
{
  ITStatus bitstatus = RESET;
  /* Check the parameters */
  assert_param(IS_RTC_GET_IT(RTC_IT)); 
  
  bitstatus = (ITStatus)(RTC->CRL & RTC_IT);
  if (((RTC->CRH & RTC_IT) != (uint16_t)RESET) && (bitstatus != (uint16_t)RESET))
  {
    bitstatus = SET;
  }
  else
  {
    bitstatus = RESET;
  }
  return bitstatus;
}

void RTC_ClearITPendingBit(uint16_t RTC_IT)
{
  /* Check the parameters */
  assert_param(IS_RTC_IT(RTC_IT));  
  
  /* Clear the corresponding RTC pending bit */
  RTC->CRL &= (uint16_t)~RTC_IT;
}

/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/