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我尝试 了用于 Web 蓝牙的Google/chrome 示例。看起来 device.gatt.connect() 只能在 navigator.bluetooth.requestDevice() 的承诺范围内工作。我按照示例保存设备并稍后调用 device.gatt.connect() ，它永远等待并且没有返回。我正在使用 Mac OSX 10.13.3 和 chrome64 以及 Android BLE 外设模拟器（来自 Google playstore）

代码段...

  var bluetoothDevice;
  navigator.bluetooth.requestDevice({
     acceptAllDevices: true})
  .then(device => {
    bluetoothDevice = device;
    bluetoothDevice.addEventListener('gattserverdisconnected', onDisconnected);
    connect();
    ....
    });
    ....
   });

  function connect() {
  exponentialBackoff(3 /* max retries */, 10 /* seconds delay */,
    function toTry() {
      time('Connecting to Bluetooth Device... ');

      /***** Issue here *****
      bluetoothDevice.gatt.connect() called by neither return nor catch error 
      ***********************/
      return bluetoothDevice.gatt.connect().catch(error => {
        log('Argh! ' + error);
      });
    },
    function success() {
      log('> Bluetooth Device connected. Try disconnect it now.');
    },
    function fail() {
      time('Failed to reconnect.');
    });
   }

任何人都可以解释如何重新连接绑定设备？

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0 回答 0