微信小程序之Ble藍牙的實現方法

小編給大家分享一下微信小程序之Ble藍牙的實現方法，相信大部分人都還不怎么了解，因此分享這篇文章給大家參考一下，希望大家閱讀完這篇文章后大有收獲，下面讓我們一起去了解一下吧！

1.簡述

藍牙適配器接口是基礎庫版本 1.1.0 開始支持。

iOS 微信客戶端 6.5.6 版本開始支持，Android 客戶端暫不支持

藍牙總共增加了18個api接口。

2.Api分類

搜索類

連接類

通信類

3.API的具體使用

詳細見官網：

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

4. 案例實現

4.1 搜索藍牙設備

/**
 * 搜索設備界面
 */
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)
//  }
// }
// })
  //獲取適配器
  wx.openBluetoothAdapter({
  success: function(res){
  // success
  console.log("-----success----------");
   console.log(res);
   //開始搜索
  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(){

 },
 //點擊事件處理
 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連接 獲取數據

/**
 * 連接設備。獲取數據
 */
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 });
  /**
   * 監聽設備的連接狀態
   */
  wx.onBLEConnectionStateChanged(function (res) {
   console.log(`device ${res.deviceId} state has changed, connected: ${res.connected}`)
  })
  /**
   * 連接設備
   */
  wx.createBLEConnection({
   deviceId: that.data.deviceId,
   success: function (res) {
    // success
    console.log(res);
    /**
     * 連接成功，后開始獲取設備的服務列表
     */
    wx.getBLEDeviceServices({
     // 這里的 deviceId 需要在上面的 getBluetoothDevices中獲取
     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設備的id:', that.data.deviceId);
      console.log('device設備的服務id:', that.data.serviceId);
      /**
       * 延遲3秒，根據服務獲取特征 
       */
      setTimeout(function () {
       wx.getBLEDeviceCharacteristics({
        // 這里的 deviceId 需要在上面的 getBluetoothDevices
        deviceId: that.data.deviceId,
        // 這里的 serviceId 需要在上面的 getBLEDeviceServices 接口中獲取
        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);
         /**
          * 回調獲取 設備發過來的數據
          */
         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"}
          /**
           * 監聽cd04cd04中的結果
           */
          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 });
          }

         })
         /**
          * 順序開發設備特征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({
          // 啟用 notify 功能
          // 這里的 deviceId 需要在上面的 getBluetoothDevices 或 onBluetoothDeviceFound 接口中獲取
          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
   }
  })
 },

 /**
  * 發送 數據到設備中
  */
 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 指令發送成功");
    console.log(res);
   },
   fail: function (res) {
    // fail
    console.log(res);
   },
   complete: function (res) {
    // complete
   }
  })

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

5.效果展示

發送校驗指令。獲取結果

以上是“微信小程序之Ble藍牙的實現方法”這篇文章的所有內容，感謝各位的閱讀！相信大家都有了一定的了解，希望分享的內容對大家有所幫助，如果還想學習更多知識，歡迎關注億速云行業資訊頻道！