350 lines
11 KiB
JavaScript
350 lines
11 KiB
JavaScript
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import Taro from "@tarojs/taro";
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import { handshake, asyncDate } from "./sendOrder";
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import useStore from "@/store/index";
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import { aes128Decrypt } from "@/utils/index";
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import TASK from "./taskQueue";
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const errMsg = {
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0: "正常",
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10000: "未初始化蓝牙适配器",
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10001: "请检查手机蓝牙是否打开或微信是否授权蓝牙",
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10002: "没有找到指定设备",
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10003: "连接失败",
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10004: "没有找到指定服务",
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10005: "没有找到指定特征",
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10006: "当前连接已断开",
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10007: "当前特征不支持此操作",
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10008: "其余所有系统上报的异常",
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10009: "Android系统版本低于4.3不支持蓝牙功能",
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10012: "连接超时",
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10013: "连接超时",
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1509008: "请检查手机定位是否打开或微信是否授权定位",
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};
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class Bluetooth {
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config = {
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serviceId: "4E31BF4A-8507-3A2B-7344-C7EDACD38104", //设备服务id
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NotifyUUID: "4E31BF4B-8507-3A2B-7344-C7EDACD38104",
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WriteUUID: "4E31BF4C-8507-3A2B-7344-C7EDACD38104",
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};
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// 连接状态
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linkFlag = false;
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// 蓝牙是否可用
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available = true;
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// 蓝牙初始化
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isInit = false;
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timeout = null;
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timeout1 = null;
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// 判断是否搜索到设备
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isFindBt = null;
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platform = Taro.getSystemInfoSync().platform;
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appAuthorize = Taro.getAppAuthorizeSetting();
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deviceInfo = {};
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callBack = () => { };
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searchBack = () => { };
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constructor() {
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// if (this.platform == "android") {
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// this.deviceInfo = { deviceId: "50:C0:F0:F2:99:5B", mac: "50:C0:F0:F2:99:5B", name: "W53A", state: false };
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// } else {
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// this.deviceInfo = { deviceId: "", mac: "50:C0:F0:C8:CC:88", name: "W53A", state: false };
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// // this.deviceInfo = { deviceId: "A890AB3C-0BC3-1418-1132-CA27514B147B", mac: "50:C0:F0:F2:99:5B", name: "W53A", state: false };
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// }
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this.onBluetoothAdapterStateChange();
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this.onBLEConnectionStateChange();
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this.onBluetoothDeviceFound();
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}
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// 错误
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fail(res) {
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this.linkFlag = false;
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if (!res.errCode) return;
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let starIde = res.errMsg.indexOf("fail") + 5;
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Taro.showToast({ title: errMsg[res.errCode] || errMsg[res.errno] || res.errMsg.substring(starIde), icon: "none", duration: 3000 });
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}
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// 监测手机蓝牙状态
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onBluetoothAdapterStateChange() {
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Taro.onBluetoothAdapterStateChange(({ available, discovering }) => {
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this.available = available;
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// 手机蓝牙开启
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if (this.available && !this.isInit) {
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Taro.closeBluetoothAdapter({
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success: (res) => {
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this.openBluetoothAdapter();
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},
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});
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console.log("手机蓝牙开启");
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}
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// 手机蓝牙关闭
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if (!available) {
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this.isInit = false;
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this.deviceInfo.state = false;
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this.linkFlag = false;
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this.callBack(this.deviceInfo);
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console.log("手机蓝牙关闭");
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}
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});
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}
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// 初始化蓝牙模块
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openBluetoothAdapter() {
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return Taro.openBluetoothAdapter({
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success: () => {
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console.log("初始化蓝牙模块");
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this.startBluetoothDevicesDiscovery()
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this.isInit = true;
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},
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fail: (err) => {
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this.isInit = false;
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this.fail(err);
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},
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});
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}
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// 开始搜寻附近的蓝牙外围设备
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startBluetoothDevicesDiscovery() {
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console.log("搜索蓝牙");
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if (this.appAuthorize.locationAuthorized != "authorized" && this.platform == "android")
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return Taro.showToast({ title: "请打开微信定位权限", icon: "none", duration: 3000 });
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Taro.startBluetoothDevicesDiscovery({
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allowDuplicatesKey: true,
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powerLevel: "high",
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success: (res) => {
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this.isFindBt = setTimeout(() => {
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if (this.platform == "android") {
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this.stopBluetoothDevicesDiscovery();
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Taro.showModal({
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title: "未搜索到设备",
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content: "1、请检查设备是否在附近，或者设备是否被其他应用连接。2、请检查手机微信应用权限中的‘附近的设备权限’是否打开。",
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showCancel: false,
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success: () => {
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const pages = Taro.getCurrentPages();
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if (pages?.length > 1) {
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Taro.navigateBack();
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}
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},
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});
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}
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this.isFindBt && this.clearTimeoutFn("isFindBt");
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}, 6000);
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},
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fail: (err) => {
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this.fail(err);
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this.stopBluetoothDevicesDiscovery();
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},
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});
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}
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// 监听搜索到新设备的事件
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// 定义一个方法用于处理蓝牙设备发现事件
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onBluetoothDeviceFound() {
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Taro.onBluetoothDeviceFound((res) => {
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const devices = res.devices[0];
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const advertisData = this.ab2hex(devices.advertisData);
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const mac = this.strInsert(String(advertisData).substring(4, 16)).toLocaleUpperCase();
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// 判断是否有搜索到设备
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this.isFindBt && this.clearTimeoutFn("isFindBt");
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if (devices.name && devices.name == "LE-AB2020") {
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const item = {
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deviceId: devices.deviceId,
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mac: mac,
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name: devices.name,
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};
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console.log(JSON.stringify(item), "搜索到设备");
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this.deviceInfo = { ...this.deviceInfo, ...item }
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this.stopBluetoothDevicesDiscovery();
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this.createBleConnection();
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}
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});
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}
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// 蓝牙连接
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createBleConnection() {
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if (!this.available || this.linkFlag) return;
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this.linkFlag = true;
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Taro.setStorageSync("deviceInfo", this.deviceInfo);
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console.log("正在连接设备");
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Taro.createBLEConnection({
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timeout: 8000,
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deviceId: this.deviceInfo.deviceId,
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success: () => {
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this.deviceInfo.state = true;
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this.getBLEDeviceServices();
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// this.getBLEDeviceCharacteristics();
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},
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fail: (res) => {
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this.linkFlag = false;
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console.log(res, this.deviceInfo, "连接错误");
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this.callBack({ ...this.deviceInfo, errCode: 10003 });
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if (!this.deviceInfo.deviceId) return this.timeout && this.clearTimeoutFn("timeout");
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if (this.timeout) return;
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if (res.errno == "1509007") {
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this.closeBluetoothAdapter();
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} else {
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this.timeout = setTimeout(() => {
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this.timeout && this.clearTimeoutFn("timeout");
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this.createBleConnection();
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}, 10000);
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}
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},
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});
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}
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// 获取蓝牙多个service
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getBLEDeviceServices() {
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Taro.getBLEDeviceServices({
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deviceId: this.deviceInfo.deviceId,
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success: (res) => {
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console.log(JSON.stringify(res), 'JSON.stringify(res)');
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this.getBLEDeviceCharacteristics();
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},
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fail: (err) => this.fail(err),
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});
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}
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// 获取蓝牙低功耗设备某个服务中所有特征
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getBLEDeviceCharacteristics() {
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Taro.getBLEDeviceCharacteristics({
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deviceId: this.deviceInfo.deviceId,
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serviceId: this.config.serviceId,
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success: (res) => {
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this.notifyBLECharacteristicValueChange();
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},
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fail: (err) => this.fail(err),
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});
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}
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// 启用蓝牙低功耗设备特征值变化时的 notify 功能
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notifyBLECharacteristicValueChange() {
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Taro.notifyBLECharacteristicValueChange({
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deviceId: this.deviceInfo.deviceId,
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serviceId: this.config.serviceId,
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characteristicId: this.config.NotifyUUID,
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state: true,
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success: (res) => {
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console.log("连接成功");
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this.callBack(this.deviceInfo);
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},
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fail: (err) => this.fail(err),
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});
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}
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//监听设备返回的数据
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onBLECharacteristicValueChange(fn) {
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Taro.onBLECharacteristicValueChange((data) => {
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let bytes = new Uint8Array(data.value);
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let aesBytes = null;
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let value = String(this.ab2hex(bytes));
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// 长度在16内的需要解密
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if (bytes.byteLength == 17 && bytes[0] == 0xfc) {
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let aesText = this.strInsert(aes128Decrypt(value.substring(2))).split(":");
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let bf = new ArrayBuffer(aesText.length);
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let dv = new DataView(bf);
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aesText.forEach((item, index) => {
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dv.setUint8(index, `0x${item}`);
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});
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aesBytes = new Uint8Array(bf);
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}
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// 获取电量
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if (aesBytes && aesBytes[1] == 0xa1 && aesBytes[2] == 0x07 && aesBytes[3] == 0xb3) {
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useStore.setState((state) => {
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state.battery = aesBytes[4];
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});
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}
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console.log(`设备回复====>${bytes.byteLength == 17 ? String(this.ab2hex(aesBytes)) : value}`);
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TASK.executeTask();
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fn && fn(bytes, aesBytes, value);
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});
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}
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// 向蓝牙写入数据
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writeBleValue(value) {
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console.log("发送指令====>" + String(this.ab2hex(value)).toLocaleUpperCase());
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return Taro.writeBLECharacteristicValue({
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deviceId: this.deviceInfo.deviceId,
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serviceId: this.config.serviceId,
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characteristicId: this.config.WriteUUID,
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writeType: "writeNoResponse",
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value: value,
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success(res) {
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console.log('writeBLECharacteristicValue success', JSON.stringify(res));
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}
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});
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}
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//蓝牙断开
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onBLEConnectionStateChange() {
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Taro.onBLEConnectionStateChange((res) => {
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if (!res.connected) {
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console.log(res, "蓝牙断开");
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this.deviceInfo.state = res.connected;
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this.callBack(this.deviceInfo);
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this.linkFlag = false;
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if (!this.available || this.timeout || !this.isInit || !this.deviceInfo.deviceId) return;
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this.timeout = setTimeout(() => {
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this.timeout && this.clearTimeoutFn("timeout");
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this.createBleConnection();
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}, 1000);
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}
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});
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}
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//停止搜寻附近的蓝牙外围设备
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stopBluetoothDevicesDiscovery() {
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this.isFindBt && this.clearTimeoutFn("isFindBt");
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Taro.stopBluetoothDevicesDiscovery();
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console.log("停止搜寻");
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}
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// 断开与蓝牙低功耗设备的连接
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closeBluetoothAdapter() {
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return new Promise((resolve, reject) => {
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this.linkFlag = false;
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this.deviceInfo = { state: false };
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wx.removeStorageSync("deviceInfo");
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this.callBack(this.deviceInfo);
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Taro.closeBluetoothAdapter({
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success: (res) => {
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this.openBluetoothAdapter().then(resolve).catch(reject);
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},
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});
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})
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}
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// 设备响应回调
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deviceCallBack(fn) {
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this.callBack = fn;
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}
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// 转换二进制数据
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ab2hex(buffer) {
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if (!buffer) return;
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const hexArr = Array.prototype.map.call(new Uint8Array(buffer), function (bit) {
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return ("00" + bit.toString(16)).slice(-2);
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});
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return hexArr.join("").toLocaleLowerCase();
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}
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/**
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* 字符串插入字符
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* @param {*} str 字符串
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* @param {*} length 间隔多少个插入
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* @param {*} fmt 插入符号
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* @returns
|
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|
|
*/
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|
strInsert(str, length = 2, fmt = ":") {
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|
if (!str || !str.length) return "";
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|
var reg = new RegExp("\\w{1," + length + "}", "g");
|
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|
|
let ma = str.match(reg);
|
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|
|
return ma.join(fmt).toLocaleLowerCase();
|
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|
|
}
|
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|
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|
|
// 清除计时器
|
|||
|
|
clearTimeoutFn(name) {
|
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|
|
clearTimeout(this[name]);
|
|||
|
|
this[name] = null;
|
|||
|
|
}
|
|||
|
|
}
|
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|
|
|
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|
|
export default new Bluetooth();
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