Raspberry PIO stepper library documentation - 1: intro, set up project and simple example

RE: Raspberry PIO stepper library documentation - 1: intro, set up project and simple example

Jan Cumps — Wed, 06 Aug 2025 15:43:18 GMT

For the Pico2 fans that want to use the 3rd PIO engine that's available on that chip: I created a (probably temporary) branch on GitHub to test how well my PIO design behaves on that 3rd co-controller: https://github.com/jancumps/pio_drv8711_stepper/tree/pico2-risk

I've configured it for ARM architecture. It would work equally good on RISC, but Raspberry's custom GCC toolchain for Pico-RISK hasn't caught up with GCC proper at this time.
For ARM, they don't need a proprietary toolchain. GCC mainstream ARM version does the job. For the RISK cores, they seem to require a custom-built-by-them GCC at the moment.

RE: Raspberry PIO stepper library documentation - 1: intro, set up project and simple example

DAB — Sun, 20 Apr 2025 18:35:26 GMT

Nice update Jan.

RE: Raspberry PIO stepper library documentation - 1: intro, set up project and simple example

shabaz — Fri, 18 Apr 2025 14:48:51 GMT

Advanced use of CMake : ) I didn't know it could fetch the library. That simplifies things greatly!

Small typo, regarding the text:

can be used with any stepper motor driver that supports PIN and DIR operation

you meant this I think:

can be used with any stepper motor driver that supports STEP and DIR operation

If 4 motors were to be controlled, would you create three more motor_t instances using the other unused sm values between 0-3, and then which pins would control the step output for the additional motors?