I've managed to get around the problem. Unfortunately my knowledge of microprocessors is sufficiently slim that I don't know whether this may cause other problems. It hasn't so far. I took up the suggestion, from https://thomasolson.com/PROJECTS/BLE/ESP32/, to set CONFIG_DISABLE_HAL_LOCKS to 1. This...

I have a very similar problem to that posted above. Mine arises when using the ESP32Servo library - which calls the LEDC library, which is referred to above. The problem line appears to be 164 of esp32-hal-ledc.c :- LEDC_MUTEX_LOCK();. As with the original query, I can run my ESC (ie ESC library whi...