ESP32 Forum

Hi

I've spent quite a few years on different embedded platforms, but I am new to the ESP32 platform.

I am trying to get CAN/TWAI running on my esp32 device. I have tried using both an ESP32C6 and ESP32S3, but cannot get the TX line to communicate. It remains high. The same goes for the RX line. I pretty much have tried everything I can think of.

I have verified that my CAN transceiver is operational. I am using the TWAI example project provided by the IDF in vsCode.

Any assistance would be appreciated!

Regards
Ezra

Seems to work fine here on both chips. Perhaps an incompatibility with your transceiver? Which one are you using?

@Ezra_Krause A couple of pointers

- Double check which GPIOs you are using and whether they are Input and/or output capable (see Datasheet for list of GPIOs and their capabilities/restrictions)
- Try running the self-test example without the transceiver to see if it's an issue with the GPIOs