Timer not working on core 1

[srjasz]

I have a timer that works when running in a task on core 0 but does not work when running in a task running on core 1.
Thanks

[aliarifat794]

You did not mention which version of the ESP32 you are using. Anyways, is there any other tasks or interrupts that might be interfering with the timer on core 1?

[srjasz]

Thanks for the response.

I am using an S3. There is only a single task running on core 1 and the only thing in the task is the timer.

[MicroController]

What do you mean you have a timer "running in a task"?

[srjasz]

Thanks for responding.
I am using a general purpose timer. Timer 0 in Timer Group 0. The timer is set to count to 200. When it reaches 200 it sets the interrupt flag and restarts at 0. As it is counting up I poll for the interrupt flag. When the flag gets set, I clear it, then continue running the rest of the function.

This has been working in a task on core 0 but when I run that same task on core 1 it does not.

When running in the task the code is bare metal and does not use any API's. The initialization is done using the API's in app_main(). Is it possible that since the initialization is being done in app_main(), which is running on core 0 that it will not work on core 1? Both cores should have identical access to the timer registers so I don't see why that should matter.

Thanks again

[eriksl]

Yes, that is the case and it's documented.