02 蓝牙模块 - MiEcosystem/miot-plugin-sdk GitHub Wiki

import Device from 'miot/device'

// 此ble对象，即为IBluetooth对象或者IBluetoothLock对象
const ble = Device.getBluetoothLE();

ble.connect().then(ble=>{

 ble.startDiscoverServices("a-b-c-d-e", ...)
  ...
});

...
ble.getService("a-b-c-d-e").startDiscoverCharacteristics("1-2-3-4-5",...)

...
const charac = ble.getService('...').getCharacteristic('...')
charac.setNotify().then(characteristic=>{}).catch(err=>{});
charac.read().then(characteristic=>{characteristic.value ... }).catch(err=>{});
charac.write().then(characteristic=>{}).catch(err=>{})

...

ble.disconnect()

Device.getBluetoothLE()
      .connect(3, {peripheralID:"1-a-b-3-c", timeout:12000})
      .then(ble=>{
         ...
      })
      .catch(err=>{
         ...
      });

正常情况，如果返回的是hexstring，则需要将hexstring转化为普通的string
Device.getBluetoothLE().getVersion().then()

加密情况

function hexCharCodeToStr(hexCharCodeStr) {
 var trimedStr = hexCharCodeStr.trim();
 var rawStr = trimedStr.substr(0, 2).toLowerCase() === "0x"?trimedStr.substr(2):trimedStr;
 var len = rawStr.length;
  if (len % 2 !== 0) {
     alert("Illegal Format ASCII Code!");
     return "";
  }
  var curCharCode;
  var resultStr = [];
  for (var i = 0; i < len; i = i + 2) {
     curCharCode = parseInt(rawStr.substr(i, 2), 16); // ASCII Code Value
     resultStr.push(String.fromCharCode(curCharCode));
  }
  return resultStr.join("");
 }

Device.getBluetoothLE().getVersion(true, true).then(version => {
  var data = Device.getBluetoothLE().securityLock.decryptMessageWithToken(version).then(data => {
      let lastVersion = hexCharCodeToStr(data.result);
      console.log("设备版本为：" + lastVersion);
   })
})

//详细使用示例可以参考com.xiaomi.bledemo/Main/BleSpec.js
       let listener0= DeviceEvent.BLESpecNotifyActionEvent.addListener((device, data) => {
          console.log('receive prop(event) changed notification:' + JSON.stringify(data))
          data.forEach((key, value) => {
            console.log(`receive prop(event) changed notification,prop:${ key }`, JSON.stringify(value));
          });
        });

        this._s1 = BluetoothEvent.bluetoothSeviceDiscovered.addListener((blut, services) => {
          if (services.length <= 0) {
          return;
          }
          console.log('bluetoothSeviceDiscovered', blut.mac, services.map(s => s.UUID), bt.isConnected);

          const s = services.map(s => ({ uuid: s.UUID, char: [] }));
          services.forEach(s => {
            s.startDiscoverCharacteristics();
          });
        }

        bt = Device.getBluetoothLE();
        if(bt.isConnected){
          bt.startDiscoverServices();
          bt.subscribeMessages('prop.2.1','event.2.1').then(res => {
            console.log('subscribe exception success,res:',JSON.stringify(res));
          }).catch(err => console.log('subscribe exception fail'))
        } else if(bt.isConnecting){
          let listener1 = BluetoothEvent.bluetoothConnectionStatusChanged.addListener((blut, isConnect) => {
          console.log('bluetoothConnectionStatusChanged', blut, isConnect);
          if (bt.mac === blut.mac) {
            if(isConnect){
              bt.startDiscoverServices();
              bt.subscribeMessages('prop.2.1','event.2.1').then(res => {
                console.log('subscribe exception success,res:',JSON.stringify(res));
              }).catch(err => console.log('subscribe exception fail'))
            }else{
              console.log('connect bledevice error');
            }
            listener1.remove();
          }
        }else{
          bt.connect(scType,{ did: Device.deviceID }).then(res=>{
            bt.startDiscoverServices();
            bt.subscribeMessages('prop.2.1','event.2.1').then(res => {
              console.log('subscribe exception success,res:',JSON.stringify(res));
              }).catch(err => console.log('subscribe exception fail'))
            });
          });
        }

一次取消订阅多个属性或者事件：
 Device.getBluetoothLE().unsubscribeMessages('prop.2.1','event.2.1);
分多次取消：
Device.getBluetoothLE().unsubscribeMessages('prop.2.1');
Device.getBluetoothLE().unsubscribeMessages('event.2.1');
一次取消所有订阅过的属性或事件：
Device.getBluetoothLE().unsubscribeMessages();

import {BluetoothEvent} from 'miot'
   const subscription = BluetoothEvent.bluetoothServiceDiscovered.addListener(
      (bluetooth, ...services)=>{
         ...
      }
    )
   ...
   subscription.remove()
   ...