Pin functionality for QFN-80 package

[thelenlucas]

The QFN-80 package (RP2350B/RP2354B) has an additional series of GPIO pins GPIO30-GPIO47. These pins currently exist as type-level variants, but do not have functionality implemented beyond FunctionSIO<C>. In theory, this should be fairly straightforward to implement, because these pins do not introduce any new peripherals in and of themselves, but I don't have any experience in HAL development, and don't know this would be effected.

As an aside, are there any good resources floating around on learning HAL development or "raw" embedded Rust? I'd love to be able to contribute, especially coming from a C/C++ background the macros that seem to impliment the ValidFunction traits seem very arcane.

[jannic]

As an aside, are there any good resources floating around on learning HAL development or "raw" embedded Rust? I'd love to be able to contribute, especially coming from a C/C++ background the macros that seem to impliment the ValidFunction traits seem very arcane.

https://github.com/rust-embedded/awesome-embedded-rust contains a lot of links to learning resources and crates for embedded devices.

Any you could join https://matrix.to/#/#rust-embedded:matrix.org. (Or https://matrix.to/#/#rp-rs:matrix.org for rp2040/rp2350 specific topics.)

[cantudo]

Hey, I also came across this for a project of mine, I am trying to implement the missing pins in #920 . I think I implemented all of them, but I could be wrong. I do not have any experience writing HALs so if you want to take a look, maybe we can work it out together.

[thelenlucas]

This looks well put together from me, though I don't have my hands on test hardware at the moment.

[AtmoPierce]

I'll take a shot against changing the ADC pins, any advice about not implementing RP2350B as a feature for this? That code looks pretty specific to RP2350A.

rp-hal/rp235x-hal/src/adc.rs

Line 284 in 38d28bd

channel!(Gpio29, 3);