ESP32 #4: esp-idf - playing with BLE / Bluetooth

Playing with #ESP32 and bluetooth low energy (BLE)

Android:
nRF Connect for Mobile from Nordic Semiconductor ASA
https://play.google.com/store/apps/details?id=no.nordicsemi.android.mcp&hl=en

Espressif Esp-idf
https://github.com/espressif/esp-idf