Posted on April 03, 2017 at 17:15Hello,
I am having issues with the Real Time clock. Occasionally it will miss its interrupt ( always when I stop the debugger )
I am not setting the date/time as I just want to have interrupt trigger a second from the current time
I have a catch so when I increment the seconds in the TR counter and it reaches 60 to set to zero so just want to make sure my code is correct
My code
uint32_t value = 0U;
// Disable the write protection for RTC registers
RTC->WPR = 0xCAU;
RTC->WPR = 0x53U;
// Disable the Alarm timer
RTC->CR &= ~(RTC_CR_ALRAE);
// Clear flag Wake-Up
RTC->ISR &= ~( RTC_ISR_ALRAF );
while((RTC->ISR & RTC_ISR_ALRAWF) != RTC_ISR_ALRAWF) /* (3) */
{
/* add time out here for a robust application */
}
RTC->ISR |= RTC_ISR_INIT;
while((RTC->ISR & RTC_ISR_INITF) != RTC_ISR_INITF) /* (3) */
{
/* add time out here for a robust application */
}
value = ( RTC->TR ) ;
value = RTCBcdToByteSeconds(value);
value = value + 1;
value = RTCByteToBcdSeconds( value );
// Configure the AlarmA
//RTC->ALRMAR = RTC_ALRMAR_MSK4 | RTC_ALRMAR_MSK3 | RTC_ALRMAR_MSK2 | RTC_ALRMAR_MSK1;
RTC->ALRMAR = RTC_ALRMAR_MSK4 | RTC_ALRMAR_MSK3 | RTC_ALRMAR_MSK2 | value;
//RTC->ALRMASSR = RTC_ALRMBSSR_MASKSS | ( RTC->SSR & RTC_ALRMASSR_SS );
// Configure the Interrupt in the RTC_CR register
RTC->CR |= RTC_CR_ALRAIE;
// Enable the Wakeup Timer
RTC->CR |= RTC_CR_ALRAE;
RTC->ISR &= ~(RTC_ISR_INIT);
// Enable the write protection for RTC registers
RTC->WPR = 0xFFU;
