Programming ESP32-C3-Mini using serial port

[ulfh2025]

I wonder if it is possible to program the ESP32-C3-Mini using the serieal input instead of using USB, and if so how to do it.

Best regards

Ulf H.

[ESP_Minatel]

Hi,

Yes, you can flash via UART on the GPIO20 and GPIO21 (pads 30 and 31 on the ESP32-C3-MINI-1).
To flash, you need to get into download mode using the GPIO9 during the boot.

Please see the datasheet and all the information you need will be there.

[ulfh2025]

That was whar I thought, but it does not work for me, so it looks like I will have to check my project

[ESP_Minatel]

If you can, share the schematics and more details on how you are connecting the signals.