ESP32-C3 USB console

[Zambiorix]

Hi,

I have a custom development board with a ESP32-C3 and a USB connector directly connected to pins 18 & 19.
The default UART pins are used for another purpose.

I have a VSCode / PlatformIO / Arduino project.

Uploading works fine.

But how do I get the console output?

    Serial.begin(460800); 

    Serial.println("hello world");

Doesn't return anything ...

Thanks

[me-no-dev]

You need to enable CDC On Boot for Serial to be mapped to the USB port

[Zambiorix]

Thank you,

And how exactly do I do that on my VSCode / PlatformIO / Arduino project?
I have tried many variations of setting build flags in my platformio.ini file, but nothing seems to work.

[me-no-dev]

@Jason2866 do you know what flag needs to be added to PIO?

[Jason2866]

This platformio boards.json should work https://github.com/platformio/platform-espressif32/blob/develop/boards/adafruit_qtpy_esp32c3.json since it is a board which uses CDC too

[Zambiorix]

Thank you

[Zambiorix]

For those with a esp32-c3-devkitm-1 board, or with a custom board, this does the trick:

board = esp32-c3-devkitm-1
monitor_speed = 460800
build_flags = 
	-D ARDUINO_USB_MODE=1
	-D ARDUINO_USB_CDC_ON_BOOT=1

[BeeGeeBee]

This worked a treat with ESP32-C3 Super Mini just arrived from AliExpress. @Zambiorix

[MainWire]

Fix confirmed for ESP32-C3 Super Mini from Aliexpress ✔️

[myhd]

Same here. Bang!