寫出特征值。如果特征在遠程設備上,將發送寫入請求或命令。
用法
bleCharacteristic.writeValue(buffer, length)
bleCharacteristic.writeValue(value)
參數
- buffer: 要寫入值的字節數組
- length: 要寫入的緩衝區參數的字節數
- value: 要寫入的值
返回
- 1關於成功,
- 0失敗
示例
// read the button pin
int buttonState = digitalRead(buttonPin);
if (oldButtonState != buttonState) {
// button changed
oldButtonState = buttonState;
if (buttonState) {
Serial.println("button pressed");
// button is pressed, write 0x01 to turn the LED on
ledCharacteristic.writeValue((byte)0x01);
} else {
Serial.println("button released");
// button is released, write 0x00 to turn the LED off
ledCharacteristic.writeValue((byte)0x00);
}
}
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注:本文由純淨天空篩選整理自arduino.cc大神的英文原創作品 ArduinoBLE - bleCharacteristic.writeValue()。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。