embassy-usb support

[bugadani]

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Pull Request Details 📖

Description

This PR uses the (as of yet unreleased) embassy-usb-synopsys-otg crate to implement embassy-usb support for ESP32-S2 and ESP32-S3. The PR also adds an example, similar in functionality to the existing usb_serial example.

Resolves #1191

Testing

Ran the new example on an ESP32-S2-DevKitC-1 and ESP32-S3-DevKitC-1

[bugadani]

This is a bit hacky but it works on at least the S2. There are some code quality issues (e.g. missing documentation), and I couldn't figure out how to make the new dependencies not be included for other targets.

The example is a blend of the esp-hal and the embassy-stm32 usb_serial examples.

[bjoernQ]

Awesome! Do we know if/when embassy-usb-synopsys-otg might get released (since merging this now would prevent us from releasing until then)

I think we should remove the logger-init from the examples - I personally like it but not everyone does (and I think I forgot to remove one of them myself before 🤔 )

[bugadani]

Awesome! Do we know if/when embassy-usb-synopsys-otg might get released (since merging this now would prevent us from releasing until then)

I don't think it needs to cook for long, but dirbaio probably will want to make sure we don't end up breaking embassy-stm32 with the refactoring.

I think we should remove the logger-init from the examples - I personally like it but not everyone does (and I think I forgot to remove one of them myself before 🤔 )

Apologies, it was a leftover of my testing.

[jessebraham]

I am sure we will merge this eventually, however since we're blocked on embassy-usb-synopsys-otg being published I'm just going to convert this to a draft until it's ready for review.

[Dirbaio]

released https://crates.io/crates/embassy-usb-synopsys-otg

[jessebraham]

Oh that was quicker than expected, thanks! 😁

[MabezDev]

As part of #1485, all examples now compile on stable. I believe you're not using type_alias_impl_trait so lets go ahead and remove it.

After that, I think think this is good to go! I got this running with my keyboard firmware and its working well, thanks for looking into this!

[bugadani]

I got this running with my keyboard firmware and its working well, thanks for looking into this!

With this PR I have a better behaved debug probe than my priced-like-gold J-Link 😭

[MabezDev]

Thank you!

[jessebraham]

Thanks, LGTM!

[morfert]

Hey, @MabezDev I have been trying to get usb hid to work. I have used the embassy-usb raspberry pi example as a reference and have managed to make it work.
However, when I add a report id to my hid report descriptor it no longer works even if I prepend each report with the id.

As part of #1485, all examples now compile on stable. I believe you're not using type_alias_impl_trait so lets go ahead and remove it.

After that, I think think this is good to go! I got this running with my keyboard firmware and its working well, thanks for looking into this!

You mentioned you have a keyboard firmware so I was wandering if you knew how I should be adding report ids to the reports.