Alarm interrupt using RTC

[vaibhav]

Posted on May 01, 2009 at 16:42

Alarm interrupt using RTC

[jramirez]

Posted on May 17, 2011 at 13:03

also when you set the alarm dont do this:

RTC_SetCounter(0x00015170);

RTC_ALR_FLAG = 0x00015170 + 2 ;

RTC_SetAlarm((RTC_ALR_FLAG));

since you dont know for sure that the counter is at that value still. of course if you set up the tick to be every 1 second then i guess its ok, a better way i think is like this.

/* Alarm in 3 second */

RTC_SetAlarm(RTC_GetCounter()+3);

[jramirez]

Posted on May 17, 2011 at 13:03

hi,

Maybe you have solved this problem by now, but anyways heres my answer you said you wanted to use the alarm interrupt but in the function NVIC you call NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQChannel; there is actually two handlers I actually made the same mistake but the opposite direction there are tow handlers if you scroll down on your stm32...it.c file youll see the RTCAlarm_IRQ and the RTC_IRQ anyways just change that in the NVIC function and it should work, and if it does let me know because for some reason i cant get the alarm interrupt to work but i had no issues with the sec interrupt hope its not too late

[vaibhav]

Posted on May 17, 2011 at 13:03

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