PSoC4 RTCs periodic alarm only triggering once

[AnKr_1499391]

Hi,

I have a very strange problem with a CY8C4248LQI-BL583 device and the RTC component.

I configured the RTC with alarm and I want to trigger a daily action with the alarm,

To test the periodic alarm feature I tried to create a minutely, an hourly or a daily alarm.

But only the daily alarm triggers correcty and it triggers only once.

I use the following code to set the alarm:

RTC_SetAlarmMask( RTC_ALARM_SEC_MASK | RTC_ALARM_MIN_MASK  | RTC_ALARM_HOUR_MASK );   // Set periodic daily alarm

RTC_SetAlarmHandler( AlarmCallbackHandler );       // set Callback Handler for Alarm

RTC_DATE_TIME MyAlarm;

MyAlarm.date = RTC_SetDay( MyAlarm.date, 22 );

MyAlarm.date = RTC_SetMonth( MyAlarm.date, RTC_APRIL);

MyAlarm.date = RTC_SetYear( MyAlarm.date, 2018 );

MyAlarm.time = RTC_SetHours( MyAlarm.time, 11 );

MyAlarm.time = RTC_SetMinutes( MyAlarm.time,  55 );

MyAlarm.time = RTC_SetSecond( MyAlarm.time, 1 );

RTC_SetAlarmDateAndTime( &MyAlarm );      // Alarm is triggered on the next day at 11:55:01

// But Alarm is triggered only once, and not repeated on the day after tomorrow.

This is the Alarm-callback:

void AlarmCallbackHandler(){ 

    RTC_ClearAlarmStatus();           // Clear Alarm Status  

    LED_Write( ~LED_READ() );                             //  toggle LED to detect the alarm has occured

}

What also does not work:

RTC_SetAlarmMask( RTC_ALARM_SEC_MASK | RTC_ALARM_MIN_MASK  );   // Set periodic hourly alarm

// or:

RTC_SetAlarmMask( RTC_ALARM_SEC_MASK  );   // Set periodic minutely alarm

// Same setup/configuration as before...

// But Alarm is NOT triggered in the next hour at minute 55 and second 01 or on each minute with minutely alarm.

Do I have to reenable the alarm somehow?

And if so, how do I do this?

Thanks a lot

Andreas