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微信小程序模板_微信小程序 蓝牙的完成实例代码

类别:媒体报道 发布时间:2021-01-11 浏览人次:

微信小程序 蓝牙的实现实例代码     投稿:lqh   这篇文章主要介绍了微信小程序 蓝牙的实现实例代码的相关资料,需要的朋友可以参考下

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:

debug/wxadoc/dev/#wxgetconnectedbluethoothdevicesobject

4. 案例实现

4.1 搜索蓝牙设备

 * 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);

//{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(){
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连接 获取数据

 * 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('' + that.data.serviceId);
 console.log('device getBLEDeviceCharacteristics:', res.characteristics)
 for (var i = 0; i 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('ed:', characteristic.value)
 //{value: ArrayBuffer, deviceId: "D8:00:D2:4F:24:17", serviceId: "ba11f08c-5f14-0b0d-1080-007cbe238851-0x", characteristicId: "0000cd04-0-00805f9b34fb-0xfb80"}
 * 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('ess', 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('ess', 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('ess', 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('ess', 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

发送校验指令。获取结果

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