Reset TimeInput Widget from Hardware

Need Help With My Project
1

I’m trying to reset the time input widget once it has executed.
When executing the code below the widget shows a reset (–:--). Though it sets the start time to 23280 seconds (6:28 am). Moreover the t.hasStartTime() shows -1.
When resetting the widget from app side the start time has a value of -16 and the t.hasStartTime() is empty.
What value needs to have the “startAt” in order to properly reset the time input widget from hardware side by having the t.hasStartTime() empty?

FYI: I’m using an ESP8266 and a local server on a Rspberry Pi. The App is for Android. Everything is up to date.

//individual time
BLYNK_WRITE(V8) {   // Scheduler #7 Time Input widget
  TimeInputParam t(param);
  long nowseconds = ((hour() * 3600) + (minute() * 60) + second());
  long startseconds = (t.getStartHour() * 3600) + (t.getStartMinute() * 60);
  int dayadjustment = -1;

  Blynk.virtualWrite(V15, startseconds);
  
  if (weekday() == 1) {
    dayadjustment = 6; // needed for Sunday Time library is day 1 and Blynk is day 7
  }
  if (t.isWeekdaySelected((weekday() + dayadjustment))) { //Time library starts week on Sunday, Blynk on Monday
    //Schedule is ACTIVE today
    if (nowseconds >= startseconds - ((brewtime/1000) + 31) && nowseconds < startseconds - ((brewtime/1000) - 31) && coffeeactive == false) {  // 62s on 60s timer ensures 1 trigger command is sent
      //reset timer in app
      int startAt = -1;
      int stopAt = -1;
      char tz[]= "Europe/Berlin";
      Blynk.virtualWrite(V8, startAt, stopAt, tz);
      //start button
      timer3.setTimeout(780L, []()  {
        coffeeaction();
      });
    }
  }
}

When being able to reset the widget from hardware side I will put the whole function into something like

if (t.hasStartTime()) {

}
2

So, the following solution is a kind of a hack but it seems to work.


//individual time
BLYNK_WRITE(V8) {   // Scheduler #7 Time Input widget
  TimeInputParam t(param);
  long startseconds = (t.getStartHour() * 3600) + (t.getStartMinute() * 60);
  
  if (t.hasStartTime() && startseconds != 23280) {
    long nowseconds = ((hour() * 3600) + (minute() * 60) + second());
    int dayadjustment = -1;
    
    if (weekday() == 1) {
      dayadjustment = 6; // needed for Sunday Time library is day 1 and Blynk is day 7
    }
    if (t.isWeekdaySelected((weekday() + dayadjustment))) { //Time library starts week on Sunday, Blynk on Monday
      //Schedule is ACTIVE today
      if (nowseconds >= startseconds - ((brewtime/1000) + 31) && nowseconds < startseconds - ((brewtime/1000) - 31) && coffeeactive == false) {  // 62s on 60s timer ensures 1 trigger command is sent
        //reset timer in app
        int startAt = -1;
        int stopAt = -1;
        char tz[]= "Europe/Berlin";
        Blynk.virtualWrite(V8, startAt, stopAt, tz);
        //start button
        timer3.setTimeout(780L, []()  {
          coffeeaction();
        });
      }
    }
  } 
}

The condition “if (t.hasStartTime() && startseconds != 23280)” prevents the time input to trigger any action when it was either resetted by the app or by hardware side. As long as you don’t want your action to be started at 6:28 am (=23280 seconds) this should work.
Anyway I really would appreciate a proper solution in order to reset the time input by code.