使用 javascript 将数据发送到 BLE 设备将不起作用

如何解决使用 javascript 将数据发送到 BLE 设备将不起作用

我有一个蓝牙设备，想用 p5ble 库打开它。 https://itpnyu.github.io/p5ble-website/

设备的 UUID 为 f000aa60-0451-4000-b000-000000000000 当向特征 UUId f000aa61-0451-4000-b000-000000000000 发送 0xAEAA01646456 时，它应该打开。 我在 Android 上使用 NRF Connect 应用程序对此进行了测试，它完美地找到了。

使用我的代码，我可以连接并找到正确的特征并发送数据。但它不会开启。 这是我从脚本中得到的输出：

找到：f000aa61-0451-4000-b000-000000000000 写作 192045191029846 到特征...断开与蓝牙设备的连接...

这里可能有什么问题？

const serviceUuid = "f000aa60-0451-4000-b000-000000000000";
const characteristicsUUID = {
  led:"f000aa61-0451-4000-b000-000000000000"
}
let ledCharacteristic;
let myBLE;

let buttonValue = 0;

function setup() {

  myBLE = new p5ble();

  // Create a 'Connect and Start Notifications' button
  const connectButton = createButton('Connect and Start Notifications')
  connectButton.mousepressed(connectAndStartNotify);
  
  // Create a 'Toggle' button
  const ledButton = createButton('LED on');
  ledButton.position(15,15);
  ledButton.mousepressed(LEDon);
}

function connectAndStartNotify() {
  // Connect to a device by passing the service UUID
  myBLE.connect(serviceUuid,gotcharacteristics);
}

// A function that will be called once got characteristics
function gotcharacteristics(error,characteristics) {
  if (error) console.log('error: ',error);
  for(let i = 0; i < characteristics.length;i++){
  if(characteristics[i].uuid == characteristicsUUID.led){
      ledCharacteristic = characteristics[i];
    console.log("found: "+characteristicsUUID.led)
    }
  }
}

// A function that turns on the LED
function LEDon(){
  myBLE.write(ledCharacteristic,0xAEAA01646456);
  myBLE.disconnect();
}