ErrorStatus RTC_SetTime()

in CORTEX_M0_FT32F072_KEIL/Source/Libraries/FT32F0xx_Driver/Src/ft32f0xx_rtc.c [424:519]

• 79 lines of code
• 8 McCabe index (conditional complexity)

ErrorStatus RTC_SetTime(uint32_t RTC_Format, RTC_TimeTypeDef* RTC_TimeStruct)
{
  uint32_t tmpreg = 0;
  ErrorStatus status = ERROR;

  /* Check the parameters */
  assert_param(IS_RTC_FORMAT(RTC_Format));
  
  if (RTC_Format == RTC_Format_BIN)
  {
    if ((RTC->CR & RTC_CR_FMT) != (uint32_t)RESET)
    {
      assert_param(IS_RTC_HOUR12(RTC_TimeStruct->RTC_Hours));
      assert_param(IS_RTC_H12(RTC_TimeStruct->RTC_H12));
    }
    else
    {
      RTC_TimeStruct->RTC_H12 = 0x00;
      assert_param(IS_RTC_HOUR24(RTC_TimeStruct->RTC_Hours));
    }
    assert_param(IS_RTC_MINUTES(RTC_TimeStruct->RTC_Minutes));
    assert_param(IS_RTC_SECONDS(RTC_TimeStruct->RTC_Seconds));
  }
  else
  {
    if ((RTC->CR & RTC_CR_FMT) != (uint32_t)RESET)
    {
      tmpreg = RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Hours);
      assert_param(IS_RTC_HOUR12(tmpreg));
      assert_param(IS_RTC_H12(RTC_TimeStruct->RTC_H12)); 
    } 
    else
    {
      RTC_TimeStruct->RTC_H12 = 0x00;
      assert_param(IS_RTC_HOUR24(RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Hours)));
    }
    assert_param(IS_RTC_MINUTES(RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Minutes)));
    assert_param(IS_RTC_SECONDS(RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Seconds)));
  }
  
  /* Check the input parameters format */
  if (RTC_Format != RTC_Format_BIN)
  {
    tmpreg = (((uint32_t)(RTC_TimeStruct->RTC_Hours) << 16) | \
             ((uint32_t)(RTC_TimeStruct->RTC_Minutes) << 8) | \
             ((uint32_t)RTC_TimeStruct->RTC_Seconds) | \
             ((uint32_t)(RTC_TimeStruct->RTC_H12) << 16)); 
  }
  else
  {
    tmpreg = (uint32_t)(((uint32_t)RTC_ByteToBcd2(RTC_TimeStruct->RTC_Hours) << 16) | \
                   ((uint32_t)RTC_ByteToBcd2(RTC_TimeStruct->RTC_Minutes) << 8) | \
                   ((uint32_t)RTC_ByteToBcd2(RTC_TimeStruct->RTC_Seconds)) | \
                   (((uint32_t)RTC_TimeStruct->RTC_H12) << 16));
  } 

  /* Disable the write protection for RTC registers */
  RTC->WPR = 0xCA;
  RTC->WPR = 0x53;

  /* Set Initialization mode */
  if (RTC_EnterInitMode() == ERROR)
  {
    status = ERROR;
  } 
  else
  {
    /* Set the RTC_TR register */
    RTC->TR = (uint32_t)(tmpreg & RTC_TR_RESERVED_MASK);

    /* Exit Initialization mode */
    RTC_ExitInitMode(); 
	
    /* If  RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
    if ((RTC->CR & RTC_CR_BYPSHAD) == RESET)
    {
      if (RTC_WaitForSynchro() == ERROR)
      {
        status = ERROR;
      }
      else
      {
        status = SUCCESS;
      }
    }
    else
    {
      status = SUCCESS;
    }
  
  }
  /* Enable the write protection for RTC registers */
  RTC->WPR = 0xFF;
    
  return status;
}