reset after deadlock

[bitrat]

Hi,

I've been experimenting with handling deadlocks in MicroPython on ESP32 Thingy.

Can I use an interrupt handler to reset the system? I've tried handling an edge on pin 0 but either it isn't called or it's code is blocked.

I'd like to modify/remove main.py and call machine.reset() from the interrupt. Is this possible?


Cheers,
Bitrat

[jimmo]

I think esp32 pin interrupts are "soft" which means they need to be scheduled by MicroPython, which won't work if you're deadlocked.

Would the watchdog timer (WDT) be useful for this?

[bitrat]

Thanks jimmo,

yeah I'll need to do something more robust with the WDT eventually. i was just looking for an easier way to unbrick my device while debugging (I'm writing some monitor classes).

I'll be using C eventually so not too worried. I guess it's the FreeRTOS layer that catches the real irq.

Cheers!