ArduinoBLE : BLEDevice class
Query the RSSI (Received signal strength indication) of the BLE device.
The RSSI of the connected BLE device, 127 if the BLE device is not connected.
Corrections, suggestions, and new documentation should be posted to the Forum.
The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.