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Reference > Libraries > Arduinoble > Blecharacteristic.uuid

ArduinoBLE - bleCharacteristic.uuid()

Query the UUID of the specified BLECharacteristic.

Syntax

bleCharacteristic.uuid()

Parameters

None

Returns

  • UUID of the Bluetooth® Low Energy service as a String.

Example


// Bluetooth® Low Energy LED Switch Characteristic - custom 128-bit UUID, read and writable by central
BLEByteCharacteristic switchCharacteristic("19B10001-E8F2-537E-4F6C-D104768A1214", BLERead | BLEWrite);


Serial.print(“Switch characteristic UUID = “);
Serial.println(switchCharacteristic.uuid());