服务器之家

服务器之家 > 正文

微信小程序--Ble蓝牙

时间：2020-09-05 11:54     来源/作者：请叫我小东子

有一段时间没有。没有写关于小程序的文章了。3月28日，微信的api又一次新的更新。期待已久的蓝牙api更新。就开始撸一番。

源码地址

1.简述

蓝牙适配器接口是基础库版本 1.1.0 开始支持。

iOS 微信客户端 6.5.6 版本开始支持，Android 客户端暂不支持

蓝牙总共增加了18个api接口。

2.Api分类

搜索类

连接类

通信类

3.API的具体使用

详细见官网：

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

4. 案例实现

4.1 搜索蓝牙设备

  1. /** 
  2.  * 搜索设备界面 
  3.  */ 
  4. Page({ 
  5.  data: { 
  6.  logs: [], 
  7.  list:[], 
  8.  }, 
  9.  onLoad: function () { 
  10.  console.log('onLoad') 
  11. var that = this; 
  12. // const SDKVersion = wx.getSystemInfoSync().SDKVersion || '1.0.0' 
  13. // const [MAJOR, MINOR, PATCH] = SDKVersion.split('.').map(Number) 
  14. // console.log(SDKVersion); 
  15. // console.log(MAJOR); 
  16. // console.log(MINOR); 
  17. // console.log(PATCH); 
  18.  
  19. // const canIUse = apiName => { 
  20. // if (apiName === 'showModal.cancel') { 
  21. //  return MAJOR >= 1 && MINOR >= 1 
  22. // } 
  23. // return true 
  24. // } 
  25.  
  26. // wx.showModal({ 
  27. // success: function(res) { 
  28. //  if (canIUse('showModal.cancel')) { 
  29. //  console.log(res.cancel) 
  30. //  } 
  31. // } 
  32. // }) 
  33.   //获取适配器 
  34.   wx.openBluetoothAdapter({ 
  35.   success: function(res){ 
  36.   // success 
  37.   console.log("-----success----------"); 
  38.    console.log(res); 
  39.    //开始搜索 
  40.   wx.startBluetoothDevicesDiscovery({ 
  41.  services: [], 
  42.  success: function(res){ 
  43.  // success 
  44.   console.log("-----startBluetoothDevicesDiscovery--success----------"); 
  45.   console.log(res); 
  46.  }, 
  47.  fail: function(res) { 
  48.  // fail 
  49.   console.log(res); 
  50.  }, 
  51.  complete: function(res) { 
  52.  // complete 
  53.   console.log(res); 
  54.  } 
  55. }) 
  56.  
  57.   }, 
  58.   fail: function(res) { 
  59.    console.log("-----fail----------"); 
  60.   // fail 
  61.    console.log(res); 
  62.   }, 
  63.   complete: function(res) { 
  64.   // complete 
  65.    console.log("-----complete----------"); 
  66.    console.log(res); 
  67.   } 
  68.  }) 
  69.  
  70.   wx.getBluetoothDevices({ 
  71.   success: function(res){ 
  72.    // success 
  73.    //{devices: Array[11], errMsg: "getBluetoothDevices:ok"} 
  74.    console.log("getBluetoothDevices"); 
  75.    console.log(res); 
  76.    that.setData({ 
  77.    list:res.devices 
  78.    }); 
  79.    console.log(that.data.list); 
  80.   }, 
  81.   fail: function(res) { 
  82.    // fail 
  83.   }, 
  84.   complete: function(res) { 
  85.    // complete 
  86.   } 
  87.   }) 
  88.  
  89.  }, 
  90.  onShow:function(){ 
  91.  
  92.  }, 
  93.  //点击事件处理 
  94.  bindViewTap: function(e) { 
  95.   console.log(e.currentTarget.dataset.title); 
  96.   console.log(e.currentTarget.dataset.name); 
  97.   console.log(e.currentTarget.dataset.advertisData); 
  98.  
  99.  var title = e.currentTarget.dataset.title; 
  100.  var name = e.currentTarget.dataset.name; 
  101.   wx.redirectTo({ 
  102.   url: '../conn/conn?deviceId='+title+'&name='+name, 
  103.   success: function(res){ 
  104.    // success 
  105.   }, 
  106.   fail: function(res) { 
  107.    // fail 
  108.   }, 
  109.   complete: function(res) { 
  110.    // complete 
  111.   } 
  112.   }) 
  113.  }, 
  114. }) 
 

4.2连接 获取数据

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
/**
 * 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('');
 }
})

5.效果展示

微信小程序--Ble蓝牙

发送校验指令。获取结果

微信小程序--Ble蓝牙

以上就是本文的全部内容，希望本文的内容对大家的学习或者工作能带来一定的帮助，同时也希望多多支持服务器之家！

原文链接：http://blog.csdn.net/u010046908/article/details/68924339

标签：
微信小程序 蓝牙 

相关文章

热门资讯

2020微信伤感网名听哭了 让对方看到心疼的伤感网名大全
2020微信伤感网名听哭了 让对方看到心疼的伤感网名大全 2019-12-26
Intellij idea2020永久破解，亲测可用！！！
Intellij idea2020永久破解，亲测可用！！！ 2020-07-29
歪歪漫画vip账号共享2020_yy漫画免费账号密码共享
歪歪漫画vip账号共享2020_yy漫画免费账号密码共享 2020-04-07
最新idea2020注册码永久激活(激活到2100年)
最新idea2020注册码永久激活(激活到2100年) 2020-07-29
电视剧《琉璃》全集在线观看 琉璃美人煞1-59集免费观看地址
电视剧《琉璃》全集在线观看 琉璃美人煞1-59集免费观看地址 2020-08-12
返回顶部