本文实例为大家分享了微信小程序使用蓝牙小插件，供大家参考，具体内容如下

bluetooth.js

function BLE(options) { this.options = options || { locator: {} };}function ab2hex(buffer) { const hexArr = Array.prototype.map.call( new Uint8Array(buffer), function (bit) { return ('00' + bit.toString(16)).slice(-2) } ) return hexArr.join('-')};BLE.prototype = { open: function (callback) {//打开适配器 成功 调用callback(); wx.openBluetoothAdapter({ success(res) { if (typeof callback != "undefined") { callback(); } }, fail(res) { console.log(res) } }) }, scan: function (callback) {//扫描设备 成功 调用callback(ls); wx.startBluetoothDevicesDiscovery({ success(res) { wx.getBluetoothDevices({ success(res) { console.log(res); var ls = []; for (var i = 0; i < res.devices.length; i++) { console.log(res.devices[i].name); ls[i] = { deviceId: res.devices[i].deviceId, name: res.devices[i].name }; } if (typeof callback!= "undefined"){ callback(ls); } } }) }, fail(res) { console.log(res) return 0; } }) }, link: function (deviceId, callback) {//连接设备 成功 调用callback(); wx.createBLEConnection({ // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接 deviceId: deviceId, success(res) { console.log(res); wx.getBLEDeviceServices({ // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接 deviceId: deviceId, success(res) { console.log(res); wx.getBLEDeviceCharacteristics({ // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接 deviceId: deviceId, // 这里的 serviceId 需要在 getBLEDeviceServices 接口中获取 serviceId: ' ', success(res) { console.log(res) if (typeof callback != "undefined") { callback(); } } }) } }) }, fail(res) { console.log(res) } }) }, write: function (deviceId, value, callback) {//写入数据 成功 调用callback(); const buffer = new ArrayBuffer(value.length); const dataView = new DataView(buffer); for (var i = 0; i < value.length; i++) { dataView.setUint8(i, value[i].charCodeAt()); } console.log(buffer); console.log(buffer); wx.getBLEDeviceServices({ // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接 deviceId: deviceId, success(res) { console.log(res); wx.getBLEDeviceCharacteristics({ // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接 deviceId: deviceId, // 这里的 serviceId 需要在 getBLEDeviceServices 接口中获取 serviceId: '4FAFC201-1FB5-459E-8FCC-C5C9C331914B', success(res) { wx.writeBLECharacteristicValue({ deviceId: deviceId, serviceId: '4FAFC201-1FB5-459E-8FCC-C5C9C331914B', characteristicId: 'BEB5483E-36E1-4688-B7F5-EA07361B26B8', value: buffer, success: function (res) { console.log(res); if (typeof callback != "undefined") { callback(); } }, fail: function (res) { console.log(res); } }) } }) } }) }, read: function (deviceId, callback) {//读取数据 成功 调用callback(xmlString); wx.onBLECharacteristicValueChange(function (characteristic) { var board = ab2hex(characteristic.value); var bigData = board.split('-'); var result = []; for (var i = 0; i < bigData.length; i++) { result.push(String.fromCharCode('0X' + bigData[i])); } var xmlString = result.join(''); if (typeof callback != "undefined") { callback(xmlString); } }); wx.readBLECharacteristicValue({ // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接 deviceId: deviceId, // 这里的 serviceId 需要在 getBLEDeviceServices 接口中获取 serviceId: '4FAFC201-1FB5-459E-8FCC-C5C9C331914B', // 这里的 characteristicId 需要在 getBLEDeviceCharacteristics 接口中获取 characteristicId: 'BEB5483E-36E1-4688-B7F5-EA07361B26B8', success(res) { // console.log('readBLECharacteristicValue:', res.errCode); console.log(res); }, fail(res) { console.log(res); } }) }, close: function (deviceId, callback) {//关闭蓝牙 成功 调用callback(); wx.closeBLEConnection({ deviceId: deviceId, success(res) { console.log(res); if (typeof callback != "undefined") { callback(); } } }) // wx.closeBluetoothAdapter({ // success(res) { // console.log(res); // if (typeof callback != "undefined"){ // callback(); // } // } // }) }}exports.BLE = BLE;

index.js

const Ble = require('../../lib/bluetooch/bluetooch');var ble = new Ble.BLE();

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。