Is It possible to get time remaining until the end?

[sidneivl]

Hi,

I appreciate your work and I would know if is possible to show the time remaining until the end.

For example, I have a countdown with a specific time using the function in(), but I want to show the time remaining in a display.

I tried use the function every() but in the looping the time is desynchronized because I have some delays.

An exemple of code to illustrate that.

#include <arduino-timer.h>

auto t = timer_create_default();

int timerToShow = 60000;
int timerToShowArduino = 60000;

long previousMillis = 0;
const int maxTime = 1000;

bool counting = false;

bool updateTimer(void *)
{
  timerToShow -= 1000;
  return true;
}

void updateTimerByArduino() {
  timerToShowArduino -= 1000;
}

bool finishTimer(void *) {
  Serial.println("finish");
  counting = false;
  t.cancel();
  return true;
}

void setup()
{
  Serial.begin(9600);
  Serial.println("start");
  counting = true;
  t.in(timerToShow, finishTimer);
  t.every(1000, updateTimer);
}

void loop()
{
  if(millis() - previousMillis >= maxTime) {
        previousMillis = millis();

        t.tick();

        updateTimerByArduino();

        if(counting) {
          Serial.println(String(t.ticks()) + "|" + String(timerToShow) + "|" + String(timerToShowArduino));
        }

        delay(1500);
   }
}

In this case when the call finishTimer() in the correct time, the counters are on 20000 yet.

Can you help me?

Regards

[sidneivl]

I've improved the code using Millis() but your lib have doesn't a function to do that?

void updateTimerByArduino() { timerToShowArduino += (timePast - millis()); timePast = millis(); }

[philj404]

There is no "end" for the timer. Code may add a new task even if the timer happens to have no pending tasks.

timer.ticks() returns the number of ticks it is "safe" to wait before the next pending task is ready.