feature request: faster than ms intervals

[mark-hahn]

I need an interrupt every 100 usecs. I assume this is no problem in esp-idf and should be possible in arduino. If needed it could support only 1 timer (direct from hw).

[khoih-prog]

Hi,

Thanks for your interest in the library.

The library already provides a way for you to do that with the function attachInterruptInterval()

// interval (in microseconds) and duration (in milliseconds). Duration = 0 or not specified => run indefinitely    // No params and duration now. To be addes in the future by adding similar functions here or to esp32-hal-timer.c    bool attachInterruptInterval(unsigned long interval, timer_callback callback);

So, to have the interrupt every 100 uS, just call

// interval (in microseconds) 
#define TIMER0_INTERVAL_US    100

// Interval in microsecs
  if (ITimer0.attachInterruptInterval(TIMER0_INTERVAL_US, TimerHandler0))
  {
    Serial.print(F("Starting  ITimer0 OK, millis() = ")); Serial.println(millis());
  }
  else
    Serial.println(F("Can't set ITimer0. Select another freq. or timer"));

Good Luck,

[mark-hahn]

Thanks