rcc_clock_setup_in_hse_8mhz_out_72mhz();// use 8 MHz high speed external clock to generate 72 MHz internal clock
#if DEBUG
// enable functionalities for easier debug
DBGMCU_CR|=DBGMCU_CR_IWDG_STOP;// stop independent watchdog counter when code is halted
@ -524,19 +523,11 @@ void main(void)
while(rtc_dcf77_time_flag){// the DCF77 module received a new time
rtc_dcf77_time_flag=false;// reset flag
action=true;// action has been performed
uint8_t*dcf77_time=rtc_dcf77_time();// get time
if(dcf77_time){// ensure it's valid
ticks_time=dcf77_time[1]*TICKS_HOUR+dcf77_time[0]*TICKS_MINUTE;// calculate new time
#if defined(EXTERNAL_RTC) && EXTERNAL_RTC
rtc_ds1307_ticks=ticks_time;// set new time
rtc_ds1307_write_time(0,dcf77_time[0],dcf77_time[1],((dcf77_time[3]+1)%8)+1,dcf77_time[2],dcf77_time[4],dcf77_time[5]);// set date and time
rtc_ds1307_oscillator_enable();// be sure the oscillation is enabled
#else
if(rtc_dcf77_time.valid){// ensure decoded time is valid
ticks_time=rtc_dcf77_time.hours*TICKS_HOUR+rtc_dcf77_time.minutes*TICKS_MINUTE+rtc_dcf77_time.seconds*TICKS_SECOND+(rtc_dcf77_time.milliseconds*TICKS_SECOND)/1000;// calculate new time
rtc_set_counter_val(ticks_time);// set new time to internal RTC
#endif
printf("DCF77 time: 20%02u-%02u-%02u %02u:%02u:00\n",dcf77_time[5],dcf77_time[4],dcf77_time[2],dcf77_time[1],dcf77_time[0]);// display time
rtc_dcf77_off();// switch DCF77 off since we have correct time
printf("DCF77 receiver switched off\n");// notify user
printf("DCF77 time: 20%02u-%02u-%02u %02u:%02u:%02u\n",rtc_dcf77_time.year,rtc_dcf77_time.month,rtc_dcf77_time.day,rtc_dcf77_time.hours,rtc_dcf77_time.minutes,rtc_dcf77_time.seconds);// display time
// never switch of DCF77 receiver since the signal gets better demodulated with time, we always have power, we can always get correct the time
}else{
printf("DCF77 time: error\n");
}
@ -554,10 +545,11 @@ void main(void)
if((ticks_time%TICKS_MINUTE)==0){// one minute passed
printf("%02u:%02u:%02u\n",ticks_time/TICKS_HOUR,(ticks_time%TICKS_HOUR)/TICKS_MINUTE,(ticks_time%TICKS_MINUTE)/TICKS_SECOND);// display external time
}
if((ticks_time%(TICKS_MINUTE*5))==0){// five minutes passed
rtc_dcf77_on();// ensure the module is on in case it switched off because of decoding issues
}
if((ticks_time%TICKS_HOUR)==0){// one hours passed
clock_hours();// show hour markers
rtc_dcf77_on();// switch DCF77 on to update/correct time
printf("DCF77 receiver switched on\n");// notify user
}
if(ticks_time>=TICKS_MIDDAY*2){// one day passed
rtc_set_counter_val(rtc_get_counter_val()%TICKS_MIDDAY);// reset time counter
