Posted on May 17, 2011 at 12:24Hi,
When I configure EXT_Line17(RTC_Alarm) to generate an interrupt, and I Set a alarm, the program don't go in interrupt program.
I want do an auto wake up. I program the RTC Alarm to wake up the STM32 each second in case of RTC.
void RTC_Configuration(void){
PWR_BackupAccessCmd(ENABLE);
BKP_DeInit();
RCC_LSEConfig(RCC_LSE_ON);
while(RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET){}
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
RCC_RTCCLKCmd(ENABLE);
RTC_WaitForSynchro();
RTC_SetPrescaler(32767);
RTC_WaitForLastTask();
RTC_ITConfig(RTC_IT_ALR, ENABLE);
RTC_WaitForLastTask();
}
In the main program, there is
while(1){
RTC_SetAlarm(RTC_GetCounter()+ 1);
RTC_WaitForLastTask();
GPIO_SetBits(GPIOC, GPIO_Pin_9);
Delay(3000); //delay 3s
//PWR_EnterSTOPMode(PWR_Regulator_ON, PWR_STOPEntry_WFI);
//SYSCLKConfig_STOP();
GPIO_ResetBits(GPIOC, GPIO_Pin_9);
}
Normaly, I should have an interrupt in RTC_Alarm , but the interrupt don't occur.
After, I want program the rtc alarm in interrupt of rtc alarm:
void RTCAlarm_IRQHandler(void){
if(RTC_GetITStatus(RTC_IT_ALR) != RESET){
EXTI_ClearITPendingBit(EXTI_Line17);
RTC_WaitForLastTask();
RTC_ClearITPendingBit(RTC_IT_ALR);
RTC_WaitForLastTask();
RTC_SetAlarm(RTC_GetCounter()+ 1);
System_Process();
PWR_EnterSTOPMode(PWR_Regulator_ON, PWR_STOPEntry_WFI);
}
}
This soluce don't run to!
Thanks for your answers
