Bad title. How does ESP32 saves/stores the private key? User can store it in encrypted flash or encrypted nvs Is it secure? Is it hacker proof? And if somehow there is an "code reader" from the microcontroller, does this micro has protective fail safe countermeasure? Relatively secure, not 100%. Isn...

Pointer

Yes I think so.

You can change bootloader log level but that will affect any reboot reason.

This might be a workaround

ulp_set_wakeup_period argument is in microseconds, then converted to cycles by the function

https://github.com/espressif/esp-idf/bl ... ulp.c#L114

Center positive, easy to check with multimeter and you can see the traces. Not an excuse for failing to be documented clearly though.

When you init WiFi and tcpip or bluetooth there are background tasks that will be created to do the low level work. High level things implemented by the user like reading data from sockets will be done in the user's task.

1. in phy lib and/or ROM
2. Antenna attached. I think you want to calibrate to typical operating environment, not shield box