PPM Generator for the RP2040 using PIO

Based on the work from Elmot.

This library generates a pulse train commonly used in the RC (remote control) field to communicate between a controller and an external transmitter or a secondary controller.

Here is what the pulse train looks like:

Utils

Online tool to compile PIO code for the RP2040:

WOKWI_PIOASM

Note

PIO_INTR_SM0_TXNFULL_LSB was defined in multiple place and was causing build issues, so I replaced it with pis_sm0_tx_fifo_not_full.