Did the ESP32 lose soft timer functionality? (Timer(-1) now fails)

[echo-lalia]

In the previous major release of MicroPython, I was creating a timer using the line self.timer = Timer(-1).
However, I just found out that in MicroPython v1.26.0 this is causing the error "ValueError: invalid Timer number".

I just did a quick scan over the new release notes, the MicroPython docs for machine.Timer, and the quick reference for the ESP32, but I didn't see any reference to this change.

Does anyone know what happened? Did the software timer get removed? Is this a bug maybe?

[robert-hh]

ESP32 never had soft timers. By chance, Timer(-1) or actually any timer number would have selected a valid hard timer. Since some newer device did not support two timer groups, the check for valid timer numbers has been tightened.

[echo-lalia]

Thanks for the explanation! That makes sense. I guess my old code technically shouldn't have ever worked, haha.