ESP32-C3 RF test mode

[pawel.cern]

Hi,

I have weird problem with RF test mode on ESP32C3. I am using ESP RF Test Tool, version 2.8. On ESP8266 (ESP-WROOM-S2) and ESP32 (ESP-WROOM-32) it works. However, on ESP32-C3 (ESP32-C3-MINI-1 module on ESP32-C3-DEVKIT-1), there is completely no output on management UART. Could you please help fixing this?

A copy of ESP32-C3-DEVKIT-1 mentioned is tested and physically seems to be OK - I can upload ESP-IDF demos and they work fine.

Pawel

[pawel.cern]

So I managed to find cause. It seems problem occurs when ESP ROM log to UART is disabled (UART_PRINT_CONTROL e-fuses burnt). If ESP ROM log is running - RF test firmware also works properly.