TWatch-2020 RTC Alarm Example

RTC.ino

TTGOClass *ttgo;

bool rtcIrq = false;

void setup() {
    ttgo = TTGOClass::getWatch();
    ttgo->begin();
    ttgo->openBL();

    pinMode(RTC_INT_PIN, INPUT_PULLUP);
    attachInterrupt(RTC_INT_PIN, [] {
        rtcIrq = 1;
    }, FALLING);

    ttgo->rtc->disableAlarm();
    ttgo->rtc->setDateTime(2020, 8, 12, 15, 0, 53);
    ttgo->rtc->setAlarmByMinutes(1);
    ttgo->rtc->enableAlarm();
}

void loop() {
  if (rtcIrq) {
    rtcIrq = 0;
    detachInterrupt(RTC_INT_PIN);
    ttgo->rtc->resetAlarm();
    ttgo->tft->setTextColor(TFT_WHITE, TFT_RED);
    ttgo->tft->drawString("RTC Alarm", 60, 118, 4);
  }
  delay(1000);
}