微信小程序如何实现蓝牙的实例分享（微信小程序如何实现蓝牙的实例分享链接）

微信小程序如何实现蓝牙的实例分享（微信小程序如何实现蓝牙的实例分享链接）

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#wxgetconnectedbluethoothdevicesobject-

4. 案例实现

4.1 搜索蓝牙设备

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('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

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发送校验指令。获取结果

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