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ArduinoBLE : BLECharacteristic class

value()

Description

Query the current value of the specified BLECharacteristic.

Syntax

bleCharacteristic.value()

Parameters

None

Returns

The current value of the characteristic, value type depends on the constructor used

Example

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

// …

       if (switchCharacteristic.value()) {   // any value other than 0
          Serial.println("LED on");
          digitalWrite(ledPin, HIGH);         // will turn the LED on
        } else {                              // a 0 value
          Serial.println(F("LED off"));
          digitalWrite(ledPin, LOW);          // will turn the LED off
        }

…
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