RTCC interrupt occurs but not jumping in interrupt routine

[nikola.vasovic]

Hi All,

I have a problem with RTCC internal module alarm interrupt, in fact, what is happening is that i can see in the main() that interrupt alarm flag is raised, by checking IFS3.RTCIF but it does not jumps in the interupt service routine??????????? any idea why is this happening?

controller: PIC24FJ128GA308
compiler: mikroC pro 6.2.1

code:

Code: Select all

void rtc_alarm_interrup() iv IVT_ADDR_RTCCINTERRUPT ics ICS_AUTO
{
   led_RGB(GREEN);
   Delay_ms(1000);
   IFS3 = IFS3 & 0xBFFF;                                                        // Clear RTC flag
}

void main()
{
  uc_init();
  RTC_DeactivateAlarm();
  RTC_SetTime(0, 0, 0); // h m s
  RTC_SetDate(10, 7, 16); // d m y
  Delay_ms(100);
  RTC_ActivateAlarm(0b00000010,1); // 10sec alarm

  while(1)
  {
    if(IFS3.RTCIF==1)
    {
      led_RGB(BLUE);
      Delay_ms(1000);
      IFS3.RTCIF=0;
    }
    
    led_RGB(RED);
  }                                                                             // end while (1)
}     

...

Code: Select all

void RTC_ActivateAlarm(unsigned short alarm_mask, unsigned short alarm_int)
{
  ALCFGRPT = 0xC000 |((alarm_mask & 0x0F) << 10);

  if(alarm_int==1)      // If true, we activate the interrupt
  {
    IFS3 = IFS3 & 0xBFFF;  // Clear RTC flag
    IEC3 = IEC3 | 0x4000;   // Enable RTC Int
  }
}

Regards
Nikola

[nikola.vasovic]

Sorted, from some reason works only when interrupt priority is 7 ....

Nikola

[divivoma]

Any update on this topic?