Problem with timers

[a7o]

I tried to get general-purpose timers working, but couldn't succeed. Analyzing the library sources I've found that in the file
https://github.com/stevstrong/Arduino_STM32/blob/master/STM32F4/cores/maple/boards.cpp#L125
the function timerDefaultConfig() is eliminated by putting return statement in the first line. So all the timers aren't initialized and don't work.

[stevstrong]

What exactly is your application and what exactly is not working?
I made that change because I had an application where there was a problem with the default configuration.

[a7o]

Here's my very simple test sketch:

void setup() {

    Serial.begin(115200);
    while (!Serial) delay(10);
    delay(1000);    

    Serial.println ("Timer setup start");

    Timer2.pause();
    int period = Timer2.setPeriod(10000); // in microseconds
    Timer2.setOverflow(1000);
    Timer2.refresh();
    Timer2.resume();

    Serial.print ("Timer setup end, period="); Serial.println (period);
}

void loop() {
      uint16_t cnt = Timer2.getCount();
      Serial.print("timer2 counter: "); Serial.println(cnt);
      delay (500);
}

With your library, I see that the counter is always 0. After deleting the return statement, the counter changes as expected (up to 1000 and then from 0 again).

[stevstrong]

I am not going to enable that line in boards.cpp again.
But I just pushed a commit to solve the issue.

In order to use any timer from now on, one should call

TimerX.init();

This way the timer will be initialized and paused at the same time.

So in your sketch you have to replace
Timer2.pause();
with
Timer2.init();
Please try this and let me know if it works.

[stevstrong]

I just tested your sketch modified as suggested and it works, so I will close this now.
Reopen if it does not work for you.