WeChat 애플릿이 Bluetooth를 구현하는 방법에 대한 공유 예

이 글에서는 주로 위챗 애플릿의 블루투스 구현 예제 코드에 대한 관련 정보를 소개합니다. 필요한 친구는

위챗 애플릿의 블루투스 구현 예제 코드

1를 참조하세요. 어댑터 인터페이스 기본 라이브러리 버전 1.1.0부터 지원됩니다. iOS WeChat 클라이언트는 버전 6.5.6부터 지원되지만 Android 클라이언트는 아직 지원되지 않습니다.

Bluetooth에는 총 18개의 API 인터페이스가 추가되었습니다.

2.Api 분류

검색 카테고리Connection 카테고리

Communication 카테고리

3. API의 구체적인 용도

자세한 내용은 공식 홈페이지를 참고하세요:

https://mp.weixin.qq.com/debug/wxadoc/dev/api/bluetooth.html#wxgetconnectedbluethoothdevicesobject

4.1. 블루투스 장치 검색

/**
 * 搜索设备界面
 */
Page({
 data: {
  logs: [],
  list:[],
 },
  onLoad: function () {
  console.log('onLoad')
var that = this;
// const SDKVersion = wx.getSystemInfoSync().SDKVersion || '1.0.0'
// const [MAJOR, MINOR, PATCH] = SDKVersion.split('.').map(Number)
// console.log(SDKVersion);
// console.log(MAJOR);
// console.log(MINOR);
// console.log(PATCH);

// const canIUse = apiName => {
//  if (apiName === 'showModal.cancel') {
//   return MAJOR >= 1 && MINOR >= 1
//  }
//  return true
// }

// wx.showModal({
//  success: function(res) {
//   if (canIUse('showModal.cancel')) {
//    console.log(res.cancel)
//   }
//  }
// })
   //获取适配器
   wx.openBluetoothAdapter({
   success: function(res){
    // success
    console.log("-----success----------");
     console.log(res);
     //开始搜索
    wx.startBluetoothDevicesDiscovery({
 services: [],
 success: function(res){
  // success
   console.log("-----startBluetoothDevicesDiscovery--success----------");
   console.log(res);
 },
 fail: function(res) {
  // fail
   console.log(res);
 },
 complete: function(res) {
  // complete
   console.log(res);
 }
})


   },
   fail: function(res) {
     console.log("-----fail----------");
    // fail
     console.log(res);
   },
   complete: function(res) {
    // complete
     console.log("-----complete----------");
     console.log(res);
   }
  })

   wx.getBluetoothDevices({
    success: function(res){
     // success
     //{devices: Array[11], errMsg: "getBluetoothDevices:ok"}
     console.log("getBluetoothDevices");
     console.log(res);
     that.setData({
     list:res.devices
     });
     console.log(that.data.list);
    },
    fail: function(res) {
     // fail
    },
    complete: function(res) {
     // complete
    }
   })

 },
 onShow:function(){


 },
  //点击事件处理
 bindViewTap: function(e) {
   console.log(e.currentTarget.dataset.title);
   console.log(e.currentTarget.dataset.name);
   console.log(e.currentTarget.dataset.advertisData);

  var title = e.currentTarget.dataset.title;
  var name = e.currentTarget.dataset.name;
   wx.redirectTo({
    url: '../conn/conn?deviceId='+title+'&name='+name,
    success: function(res){
     // success
    },
    fail: function(res) {
     // fail
    },
    complete: function(res) {
     // complete
    }
   })
 },
})

4.2 연결하여 데이터

/**
 * 连接设备。获取数据
 */
Page({
  data: {
    motto: 'Hello World',
    userInfo: {},
    deviceId: '',
    name: '',
    serviceId: '',
    services: [],
    cd20: '',
    cd01: '',
    cd02: '',
    cd03: '',
    cd04: '',
    characteristics20: null,
    characteristics01: null,
    characteristics02: null,
    characteristics03: null,
    characteristics04: null,
    result,

  },
  onLoad: function (opt) {
    var that = this;
    console.log("onLoad");
    console.log('deviceId=' + opt.deviceId);
    console.log('name=' + opt.name);
    that.setData({ deviceId: opt.deviceId });
    /**
     * 监听设备的连接状态
     */
    wx.onBLEConnectionStateChanged(function (res) {
      console.log(`device ${res.deviceId} state has changed, connected: ${res.connected}`)
    })
    /**
     * 连接设备
     */
    wx.createBLEConnection({
      deviceId: that.data.deviceId,
      success: function (res) {
        // success
        console.log(res);
        /**
         * 连接成功，后开始获取设备的服务列表
         */
        wx.getBLEDeviceServices({
          // 这里的 deviceId 需要在上面的 getBluetoothDevices中获取
          deviceId: that.data.deviceId,
          success: function (res) {
            console.log('device services:', res.services)
            that.setData({ services: res.services });
            console.log('device services:', that.data.services[1].uuid);
            that.setData({ serviceId: that.data.services[1].uuid });
            console.log('--------------------------------------');
            console.log('device设备的id:', that.data.deviceId);
            console.log('device设备的服务id:', that.data.serviceId);
            /**
             * 延迟3秒，根据服务获取特征 
             */
            setTimeout(function () {
              wx.getBLEDeviceCharacteristics({
                // 这里的 deviceId 需要在上面的 getBluetoothDevices
                deviceId: that.data.deviceId,
                // 这里的 serviceId 需要在上面的 getBLEDeviceServices 接口中获取
                serviceId: that.data.serviceId,
                success: function (res) {
                  console.log('000000000000' + that.data.serviceId);
                  console.log('device getBLEDeviceCharacteristics:', res.characteristics)
                  for (var i = 0; i < 5; i++) {
                    if (res.characteristics[i].uuid.indexOf("cd20") != -1) {
                      that.setData({
                        cd20: res.characteristics[i].uuid,
                        characteristics20: res.characteristics[i]
                      });
                    }
                    if (res.characteristics[i].uuid.indexOf("cd01") != -1) {
                      that.setData({
                        cd01: res.characteristics[i].uuid,
                        characteristics01: res.characteristics[i]
                      });
                    }
                    if (res.characteristics[i].uuid.indexOf("cd02") != -1) {
                      that.setData({
                        cd02: res.characteristics[i].uuid,
                        characteristics02: res.characteristics[i]
                      });
                    } if (res.characteristics[i].uuid.indexOf("cd03") != -1) {
                      that.setData({
                        cd03: res.characteristics[i].uuid,
                        characteristics03: res.characteristics[i]
                      });
                    }
                    if (res.characteristics[i].uuid.indexOf("cd04") != -1) {
                      that.setData({
                        cd04: res.characteristics[i].uuid,
                        characteristics04: res.characteristics[i]
                      });
                    }
                  }
                  console.log(&#39;cd01= &#39; + that.data.cd01 + &#39;cd02= &#39; + that.data.cd02 + &#39;cd03= &#39; + that.data.cd03 + &#39;cd04= &#39; + that.data.cd04 + &#39;cd20= &#39; + that.data.cd20);
                  /**
                   * 回调获取 设备发过来的数据
                   */
                  wx.onBLECharacteristicValueChange(function (characteristic) {
                    console.log(&#39;characteristic value comed:&#39;, characteristic.value)
                    //{value: ArrayBuffer, deviceId: "D8:00:D2:4F:24:17", serviceId: "ba11f08c-5f14-0b0d-1080-007cbe238851-0x600000460240", characteristicId: "0000cd04-0000-1000-8000-00805f9b34fb-0x60800069fb80"}
                    /**
                     * 监听cd04cd04中的结果
                     */
                    if (characteristic.characteristicId.indexOf("cd01") != -1) {
                      const result = characteristic.value;
                      const hex = that.buf2hex(result);
                      console.log(hex);
                    }
                    if (characteristic.characteristicId.indexOf("cd04") != -1) {
                      const result = characteristic.value;
                      const hex = that.buf2hex(result);
                      console.log(hex);
                      that.setData({ result: hex });
                    }

                  })
                  /**
                   * 顺序开发设备特征notifiy
                   */
                  wx.notifyBLECharacteristicValueChanged({
                    deviceId: that.data.deviceId,
                    serviceId: that.data.serviceId,
                    characteristicId: that.data.cd01,
                    state: true,
                    success: function (res) {
                      // success
                      console.log(&#39;notifyBLECharacteristicValueChanged success&#39;, res);
                    },
                    fail: function (res) {
                      // fail
                    },
                    complete: function (res) {
                      // complete
                    }
                  })
                  wx.notifyBLECharacteristicValueChanged({
                    deviceId: that.data.deviceId,
                    serviceId: that.data.serviceId,
                    characteristicId: that.data.cd02,
                    state: true,
                    success: function (res) {
                      // success
                      console.log(&#39;notifyBLECharacteristicValueChanged success&#39;, res);
                    },
                    fail: function (res) {
                      // fail
                    },
                    complete: function (res) {
                      // complete
                    }
                  })
                  wx.notifyBLECharacteristicValueChanged({
                    deviceId: that.data.deviceId,
                    serviceId: that.data.serviceId,
                    characteristicId: that.data.cd03,
                    state: true,
                    success: function (res) {
                      // success
                      console.log(&#39;notifyBLECharacteristicValueChanged success&#39;, res);
                    },
                    fail: function (res) {
                      // fail
                    },
                    complete: function (res) {
                      // complete
                    }
                  })

                  wx.notifyBLECharacteristicValueChanged({
                    // 启用 notify 功能
                    // 这里的 deviceId 需要在上面的 getBluetoothDevices 或 onBluetoothDeviceFound 接口中获取
                    deviceId: that.data.deviceId,
                    serviceId: that.data.serviceId,
                    characteristicId: that.data.cd04,
                    state: true,
                    success: function (res) {
                      console.log(&#39;notifyBLECharacteristicValueChanged success&#39;, res)
                    }
                  })

                }, fail: function (res) {
                  console.log(res);
                }
              })
            }
              , 1500);
          }
        })
      },
      fail: function (res) {
        // fail
      },
      complete: function (res) {
        // complete
      }
    })
  },

  /**
   * 发送 数据到设备中
   */
  bindViewTap: function () {
    var that = this;
    var hex = &#39;AA5504B10000B5&#39;
    var typedArray = new Uint8Array(hex.match(/[\da-f]{2}/gi).map(function (h) {
      return parseInt(h, 16)
    }))
    console.log(typedArray)
    console.log([0xAA, 0x55, 0x04, 0xB1, 0x00, 0x00, 0xB5])
    var buffer1 = typedArray.buffer
    console.log(buffer1)
    wx.writeBLECharacteristicValue({
      deviceId: that.data.deviceId,
      serviceId: that.data.serviceId,
      characteristicId: that.data.cd20,
      value: buffer1,
      success: function (res) {
        // success
        console.log("success 指令发送成功");
        console.log(res);
      },
      fail: function (res) {
        // fail
        console.log(res);
      },
      complete: function (res) {
        // complete
      }
    })

  },
  /**
   * ArrayBuffer 转换为 Hex
   */
  buf2hex: function (buffer) { // buffer is an ArrayBuffer
    return Array.prototype.map.call(new Uint8Array(buffer), x => (&#39;00&#39; + x.toString(16)).slice(-2)).join(&#39;&#39;);
  }
})

5. 효과 표시

확인 명령을 보냅니다. 결과 얻기

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