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PIC24F16KA102 RTC alarm ignores week day [Solved]

 
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georpo



Joined: 18 Nov 2008
Posts: 281
Location: Athens, Greece.

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PIC24F16KA102 RTC alarm ignores week day [Solved]
PostPosted: Wed Sep 04, 2019 1:06 am     Reply with quote
Hello friends!

I am using the PIC24F16KA102 RTC module and I want to have week day based alarms which does not seem to work.

Everything works OK, I set the date, week day and time, read it back, I set the alarm and read it back and the alarm works as far as it concerns date and time but it ignores the week day.

For example if I set the RTC week day to 0 (Sunday) and the alarm week day to Monday the alarm will occur ignoring the week day.

CCS:5.049


Code:

rtc_time_t write_clock, read_clock;


void SetupRTC(){
   
   setup_rtc(RTC_ENABLE , 0);

}


void WriteTime(){

   write_clock.tm_year=19;
   write_clock.tm_mon=9;
   write_clock.tm_mday=6;
   write_clock.tm_wday=4;
   write_clock.tm_hour=14;
   write_clock.tm_min=30;
   write_clock.tm_sec=0;

    rtc_write(&write_clock);         
}



void WriteAlarm(){
   
   write_clock.tm_year=19;
   write_clock.tm_mon=9;
   write_clock.tm_mday=6;
   write_clock.tm_wday=5;
   write_clock.tm_hour=14;
   write_clock.tm_min=30;
   write_clock.tm_sec=6;

   setup_rtc_alarm(RTC_ALARM_ENABLE | RTC_CHIME_DISABLE, RTC_ALARM_YEAR, 0x00);
   rtc_alarm_write(&write_clock);   
}



#INT_RTC
void RTCISR(){
    Led=1;
}


Code:

#include "24F16KA102.h"
#device ADC=10

#FUSES NOWDT                    //No Watch Dog Timer
#FUSES NOPROTECT                //Code not protected from reading
#FUSES FRC_PLL                  //Internal osc + PLL               
#FUSES NOIESO                   //Internal External Switch Over mode disabled
#FUSES NOPR                     //Pimary oscillator disabled
#FUSES OSCIO                    //OSC2 is general purpose output         
#FUSES NOCKSFSM   //Clock Switching is disabled, fail Safe clock monitor is disabled
#FUSES NOBROWNOUT               //Reset when brownout detected
#FUSES PUT                      //Power Up Timer       
#FUSES MCLR                     //Master Clear pin enabled
#FUSES NOWRT                    //Program memory not write protected
#FUSES NODEBUG                  //No Debug mode for ICD
#FUSES RTCCK_SOSC               //Use secondary oscillator for RTCC



#use delay(int=32M)


Any help appreciated.
_________________
George.
georpo



Joined: 18 Nov 2008
Posts: 281
Location: Athens, Greece.

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PostPosted: Wed Sep 04, 2019 1:21 am     Reply with quote
In reply to myself, you have to set the alarm interval to WEEK

Code:

setup_rtc_alarm(RTC_ALARM_ENABLE | RTC_CHIME_DISABLE, RTC_ALARM_WEEK, 0x00);

_________________
George.
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