PWM signal on rp2040

[Emru1]

Can I somewhat use PWM in AtomVM on rp2040?
Is it available from Erlang code, or do I need to write a NIF.

What about rp2040 PIO?

[UncleGrumpy]

We don't have PWM support added for rp2040 yet. That is usually a fairly simple peripheral to support. I have not had time yet to look how it is done in the pico-sdk, but this should be easy enough to add. We don't support PIO yet either, that is a much more complicated situation. The only peripheral (besides WiFi on the PicoW) that we currently support is GPIO, I think I2C, SPI, ADC, PWM are higher priorities than PIO at the moment. I'm not sure about the practicality of including custom user assembly for the PIO driver in the VM, this wouldn't work for release binaries, @pguyot is our rp2040 guru, so maybe he has an idea about this.