Did you ever figure out what the problem was? I have the same issue after setting a non existent ssid and password to connect the esp32 to an acces point. After that i couldn't get the esp32 to work as a AP anymore.

For esp32-c3 returns zero if usb is not connected, otherwise returns a positive integer (10). int is_plugged_usb(void){ uint32_t *aa = USB_SERIAL_JTAG_FRAM_NUM_REG; uint32_t first = *aa; vTaskDelay(pdMS_TO_TICKS(10)); return (int) (*aa - first); } How to use this? I am trying to implement it in my ...

Some additional links with code examples. I just don't know how to implement it.

ESP-idf Ping example (incl delay): viewtopic.php?

Alexa Voice Service Ping-Setup: https://developer.amazon.com/docs/alexa

In this project i found on github https://github.com/MrBuddyCasino/ESP32_Alexa , there should be a function that sends a "ping" every 5 minutes to the server it is connected to (amazon's alexa server), to keep the connection alive and avoid the esp32 from beeing reset. This is not implemented yet. I...