微信小程序如何实现蓝牙的实例分享

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

微信小程序 蓝牙的实现实例代码

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#wxgetconnectedbluethoothdevicesobject4. 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){// successconsole.log("-----success----------");console.log(res);//开始搜索wx.startBluetoothDevicesDiscovery({ services: [], success: function(res){// successconsole.log("-----startBluetoothDevicesDiscovery--success----------");console.log(res); }, fail: function(res) {// failconsole.log(res); }, complete: function(res) {// completeconsole.log(res); }})},fail: function(res) {console.log("-----fail----------");// failconsole.log(res);},complete: function(res) {// completeconsole.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) {// successconsole.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 getBluetoothDevicesdeviceId: 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) {// successconsole.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) {// successconsole.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) {// successconsole.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.bufferconsole.log(buffer1)wx.writeBLECharacteristicValue({deviceId: that.data.deviceId,serviceId: that.data.serviceId,characteristicId: that.data.cd20,value: buffer1,success: function (res) {// successconsole.log("success 指令发送成功");console.log(res);},fail: function (res) {// failconsole.log(res);},complete: function (res) {// complete}})},/*** ArrayBuffer 转换为 Hex*/buf2hex: function (buffer) { // buffer is an ArrayBufferreturn 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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