Unsafe GPIO API

[go2sh]

Hello,

I was playing around with zephyr + rust and I was under the impression that the interaction with devices could happen in a safe manner.

So take this as a feature request / bug report / question, how to make the gpio API safe? Is it just error handling what is missing?

BR,
go2sh

[d3zd3z]

I think #111 which recently merged should make this a lot better. I've both removed the GpioToken, from the API, and made only the get_instance require unsafe. This was kind of a compromise. The problem here is that Zephyr GPIO API doesn't really specify whether it is thread safe, and it kind of depends on the particular driver. With this change, if should be possible to mostly use the GPIOs without needing unsafe, but it is important to understand what can be done safely with a given GPIO driver.

Does this address your concern?

[go2sh]

Hi

That is perfect. The driver i use is thread safe. We are currently creating a show case for the zephyr and rust for customers. The unsafe sparked so questions.

Thank you, for your work. I'm currently upscaling my rust knowledge, hopefully I can contribute soon as well.