ESP32 Forum

The ESP32 Datasheet is missing of a CAN-Bus chapter section.

https://www.espressif.com/sites/default ... eet_en.pdf
https://www.espressif.com/sites/default ... nes_en.pdf

There is a more detailed datasheet? I can't find it.
On ESP-IDF guide i read that I can connect the Rx\Tx lines almost on all GPIO's. But my experience tell me that is better to investigate when there is nothing explicit on hardware datasheets.
Anyway, I need to validate my design before first pcbs production:
I need to know if on a ESP32 I can connect Trasceiver RX\TX Lines as follow:

Can Rx on GPIO4 of ESP32
Can Tx on GPIO16 of ESP32

Can anyone help me with an assertation of this connetions?
Thank you in advice.
Best regards.

Look for a peripheral called TWAI. Also, you can route the can bus pins to any output-capable GPIO pins, 4 and 16 should work just fine given that your ESP32 does not use PSRAM or 1.8V flash (in which case GPIO16 will be unusable).

I was wrong with that GPIOs because I use a module with PSRAM.
I forget to check also the module datasheet:
https://www.mouser.it/datasheet/2/891/e ... 855913.pdf

I moved my GPIO:
CAN_RX on GPIO18
CAN_TX on GPIO19

and in another product, same module but I have an SPI on GPIO 5,18,19,23 so I move to:
CAN_RX on GPIO21
CAN_TX on GPIO22

Maybe now I will have it correct.
Thank you for the reply.