Two-Wire Automotive Interface (TWAI)

[中文]


What are the considerations when using the ESP32 TWAI® controller?

Please refer to the ESP32 Series SoC Errata > Section ESP32 TWAI Errata.


Does ESP32-S3 support CAN-FD?

The ESP32-S3 itself does not integrate a CAN-FD controller, but users can still use a CAN-FD controller with an SPI interface, such as the MCP2518FD. For subsequent chips like ESP32-C5 support CAN-FD. For more information please refer to esp_driver_twai.


Does ESP32 support interrupt mode for CAN reception?

Yes, it does. The TWAI driver uses receive interrupt, and automatically stores the received information into the RX queue.