TWAI: support all devices and improve testing of the peripheral driver

[jessebraham]

With #192 merged we now have a TWAI driver for the ESP32-C3. We should support all remaining devices as well before our next release is published. This can be done all in one swing or with a PR per device, doesn't matter. At the time of writing the ESP32-C2 is the only supported device which does not have TWAI.

• ESP32
• ESP32-C3
• ESP32-C6
• ESP32-H2
• ESP32-S2
• ESP32-S3

In addition to supporting all devices, it would be ideal to convert the example to a "self test", not requiring any external hardware. There is an example in ESP-IDF which does just this, and can be found here. We generally prefer to avoid requiring external hardware whenever possible (I2C being the lone exception) so ideally this peripheral should be no different. If this is not possible/feasible then two ESPs talking to each other would also be an acceptable solution.

• Add listen only and self-test mode support for TWAI #1907
• Self-test example

[markfarnan]

This is awesome !. I'm about to start a (Rust) project which requires TWAI (for connection to NEMA2000), on some existing ESP32 hardware. Is there an ETA for the next release ?

[jessebraham]

There are at least a couple smaller tasks that will need to be done first, but I imagine we should be able to publish new releases at some point in January. I will be back at work next week so I will evaluate where we stand at that time.

[jessebraham]

ESP32-S3 support was added in #325.

I will add support for the remaining two chips.

[jessebraham]

The ESP32-C6 seems to fail in the same way that the ESP32 and ESP32-S2 do, so this will need to be investigated as well.

[noonien]

I have an ESP32-C6 dev board and a motor controller with which i communicate via TWAI if you need to test anything