微信小程序 蓝牙的实现实例代码

/** * 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    }   }) },})

/** * 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('cd01= ' + that.data.cd01 + 'cd02= ' + that.data.cd02 + 'cd03= ' + that.data.cd03 + 'cd04= ' + that.data.cd04 + 'cd20= ' + that.data.cd20);                  /**                   * 回调获取 设备发过来的数据                   */                  wx.onBLECharacteristicValueChange(function (characteristic) {                    console.log('characteristic value comed:', 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('notifyBLECharacteristicValueChanged success', 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('notifyBLECharacteristicValueChanged success', 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('notifyBLECharacteristicValueChanged success', 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('notifyBLECharacteristicValueChanged success', 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 = 'AA5504B10000B5'    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 => ('00' + x.toString(16)).slice(-2)).join('');  }})