ESP32-S3 Serial Communication using on-board USB-to-UART bridge.

[ImanolGo]

Hi,

I was wondering if it is possible to use the on-board USB-to-UART bridge, for serial communication using,
Arduino's serial library.

That is, I've created a test board connecting GPIO20 to USB-D+ pin and GPIO19 to USB-D- pin, which should allow USB 2.0 OTG / USB-JTAG bridge.

https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/api-reference/peripherals/gpio.html

I would appreciate your help, if you already have experience with this topic.

[me-no-dev]

Example: https://github.com/espressif/arduino-esp32/blob/master/libraries/USB/examples/USBSerial/USBSerial.ino
Docs: https://docs.espressif.com/projects/arduino-esp32/en/latest/api/usb_cdc.html
More: https://docs.espressif.com/projects/arduino-esp32/en/latest/tutorials/cdc_dfu_flash.html#usb-cdc

[ImanolGo]

Thanks.

• USB CDC On Boot -> Enabled
• Upload Mode -> UART0 / Hardware CDC

Did the trick.