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320 lines
10 KiB
320 lines
10 KiB
import * as t from "./tools"
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const app = getApp();
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/*
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import { HTTP } from "../server";
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*/
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/**
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* 蓝牙工具类
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* 封装小程序蓝牙流程方法
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* 处理事件通信
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*/
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class BLEHandler1 {
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constructor(blename, emitter) {
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this.blename = blename //厂家自定义的蓝牙设备名称
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this.emitter = emitter
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this.readCharacteristicId = "0000FFF0-0000-1000-8000-00805F9B34FB"; //能从硬件返回的信息中自动提取
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this.writeCharacteristicId = "0000FFF2-0000-1000-8000-00805F9B34FB"; //能从硬件返回的信息中自动提取
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this.notifyCharacteristicId = "0000FFF1-0000-1000-8000-00805F9B34FB"; //能从硬件返回的信息中自动提取
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this.deviceId = ""; //蓝牙Mac地址
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this.serviceId = "0000FFF3-0000-1000-8000-00805F9B34FB";//具体的serviceId要自己根据硬件提供设置。
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this.receivePacket = [];
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this.recPktLength = 0;
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this.recPktOffset = 0;
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}
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async openAdapter() {
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let [err, res] = await t._openAdapter.call(this);
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if (err != null) {
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this.emitter.emit("channel", {
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type: "connect",
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data: "未打开适配器"
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})
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return false;
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}
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return true
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}
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async startSearch() {
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let [err, res] = await t._startSearch.call(this);
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if (err != null) {
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return;
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}
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this.emitter.emit("channel", {
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type: "connect",
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data: "正在连接中..."
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})
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}
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async onBluetoothFound() {
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let [err, res] = await t._onBluetoothFound.call(this);
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if (err != null) {
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this.emitter.emit("channel", {
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type: "connect",
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data: "未找到设备"
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})
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return false;
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}
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return true
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}
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async getBluetoothDevices() {
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let [err, res] = await t._getBluetoothDevices.call(this);
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if (err != null) {
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this.emitter.emit("channel", {
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type: "connect",
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data: "未找到设备"
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})
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return false;
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}
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return true
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}
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async stopSearchBluetooth() {
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let [err, res] = await t._stopSearchBluetooth.call(this);
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if (err != null) {
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return;
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}
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}
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async connectBlue() {
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let [err, res] = await t._connectBlue.call(this);
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if (err != null) {
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return;
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}
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}
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async setBLEMTU() {
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let [err, res] = await t._setBLEMTU.call(this);
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if (err != null) {
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return;
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}
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}
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async getBLEServices() {
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let [err, res] = await t._getBLEServices.call(this);
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if (err != null) {
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return;
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}
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}
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async getCharacteristics() {
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let [err, res] = await t._getCharacteristics.call(this);
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if (err != null) {
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this.emitter.emit("channel", {
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type: "connect",
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data: "无法订阅特征值"
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})
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// 取消连接
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this.closeBLEConnection()
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this.closeBLEAdapter()
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wx.setStorageSync("bluestatus", "");
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return false;
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}
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this.emitter.emit("channel", {
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type: "connect",
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data: "蓝牙已连接"
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})
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wx.setStorageSync("bluestatus", "on");
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return true
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}
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async notifyBLECharacteristicValueChange() {
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let [err, res] = await t._notifyBLECharacteristicValueChange.call(this);
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if (err != null) {
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return;
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}
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}
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async closeBLEConnection() {
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let [err, res] = await t._closeBLEConnection.call(this);
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if (err != null) {
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return;
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}
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}
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async closeBLEAdapter() {
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let [err, res] = await t._closeBLEAdapter.call(this);
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if (err != null) {
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return;
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}
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}
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async sentOrder(cmd, payload) {
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let data = t._sentOrder(cmd, payload)
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console.log("-- 发送数据:", data)
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let arrayBuffer = new Uint8Array(data).buffer;
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let [err, res] = await t._writeBLECharacteristicValue.call(this, arrayBuffer)
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if (err != null) {
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return false
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}
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console.log("数据发送成功！")
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return true
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}
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// 打开蓝牙适配器状态监听
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onBLEConnectionStateChange() {
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wx.onBLEConnectionStateChange(res => {
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// 该方法回调中可以用于处理连接意外断开等异常情况
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if (!res.connected) {
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this.closeBLEAdapter()
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wx.setStorageSync("bluestatus", "");
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this.emitter.emit("channel", {
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type: "connect",
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data: "蓝牙已断开"
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})
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}
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}, err => {
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console.log('err', err)
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})
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}
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// 收到设备推送的notification
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onBLECharacteristicValueChange() {
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wx.onBLECharacteristicValueChange(res => {
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//let arrbf = new Uint8Array(res.value)
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//console.log(`收到硬件数据反馈！命令码为：${arrbf[2]}`)
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//if (this._checkData(arrbf)) {
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//}
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let arrbf = new Uint8Array(res.value)
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if (arrbf[0] == 0x89 && arrbf[1] == 0x89)
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{
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let dataLength = ((arrbf[10] << 8) & 0xff00) + (arrbf[11] & 0x00ff)
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this.recPktLength = 13 + dataLength
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this.receivePacket = new Uint8Array(this.recPktLength)
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this.recPktOffset = 0
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console.log("开始接收数据：length= " + arrbf.length + " data= " + arrbf)
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this.receivePacket.set(arrbf, this.recPktOffset)
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this.recPktOffset += arrbf.length;
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if( this.recPktOffset == this.recPktLength){
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this.getReceivePacket(this.receivePacket)
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}
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}
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else
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{
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console.log("继续接收数据：length= " + arrbf.length + " data= " + arrbf)
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this.receivePacket.set(arrbf, this.recPktOffset)
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this.recPktOffset += arrbf.length;
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if( this.recPktOffset == this.recPktLength){
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this.getReceivePacket(this.receivePacket)
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}
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}
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})
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}
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/*
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_uploadInfo(message) {
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console.log("-- 准备数据同步！", this._mapToArray(message))
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let bleorder = wx.getStorageSync("bleorder");
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let blecabinet = wx.getStorageSync("blecabinet")
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HTTP({
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url: "cabinet/uploadBlueData",
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methods: "post",
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data: {
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cabinetQrCode: blecabinet,
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order: bleorder,
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message: this._mapToArray(message)
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}
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}).then(res => {
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console.log("✔ 数据同步成功！")
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}, err => {
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console.log('✘ 数据同步失败', err)
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})
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}
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*/
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_mapToArray(arrbf) {
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let arr = []
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arrbf.map(item => {
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arr.push(item)
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})
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return arr
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}
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// 校验数据正确性
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_checkData(arrbf) {
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let packetLen = arrbf.length;
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console.log("接收数据：" + arrbf)
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// 校验帧头帧尾
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if (arrbf[0] != 0x89 || arrbf[1] != 0x89) {
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console.log('不是该设备返回的包')
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return false
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}
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if (packetLen < 14) {
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console.log("包长太短，不是该设备返回的包");
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return false;
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}
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let dataLength = ((arrbf[10] << 8) & 0xff00) + (arrbf[11] & 0x00ff);
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if (dataLength != (packetLen - 13)) {
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let calLen = packetLen - 13;
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console.log("✘ 数据长度错误: " + dataLength + " is not " + calLen);
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return false;
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}
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//校验包
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let check = arrbf[0];
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for (let i = 1; i < packetLen - 1; i++)
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check ^= arrbf[i];
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if (check != arrbf[packetLen - 1]) {
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console.log("crc校验错误，请重发." + check);
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return false;
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}
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console.log('✔ 数据校验成功，接收完整！')
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return true
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}
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getReceivePacket(arrbf)
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{
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let that =this
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let packetLen = arrbf.length;
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console.log("接收数据：" + arrbf)
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// 校验帧头帧尾
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if (arrbf[0] != 0x89 || arrbf[1] != 0x89) {
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console.log('不是该设备返回的包')
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return [0];
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}
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if (packetLen < 14) {
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console.log("包长太短，不是该设备返回的包");
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return [0];
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}
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let dataLength = ((arrbf[10] << 8) & 0xff00) + (arrbf[11] & 0x00ff);
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if (dataLength != (packetLen - 13)) {
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let calLen = packetLen - 13;
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console.log("✘ 数据长度错误: " + dataLength + " is not " + calLen);
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return [0];
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}
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//校验包
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let check = arrbf[0];
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for (let i = 1; i < packetLen - 1; i++)
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check ^= arrbf[i];
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if (check != arrbf[packetLen - 1]) {
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console.log("crc校验错误，请重发." + check);
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return [0];
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}
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//数据解密
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let key = arrbf[3];
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let data_offset = 12;
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let result = new Uint8Array(dataLength)
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for (let i = 0; i < dataLength; i++) {
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result[i] = arrbf[i + data_offset];
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result[i] = (result[i] ^ (key ^ i));
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result[i] += (dataLength - i) ^ key;
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}
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console.log('✔ 数据校验成功，接收完整！ packet= ' + arrbf)
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if(result[0] == 25 && result[result.length-1]==2){//蓝牙录入指纹02,设备返回指纹ID
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app.globalData.fingerprintId = result[22]
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}
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if(result[0] == 25 && (result[result.length-1] == 3 || result[result.length-1] == 2 || result[result.length-1] ==1)){//蓝牙录入指纹01
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app.globalData.backdata = result[result.length-1]
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}
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if(result[0] == 83 && result[1] == 1){
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app.globalData.stop29=true
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}
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if(result[0] == 49 && result[1] == 1){//蓝牙开锁
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app.globalData.openlock=result[1]
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}
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return result;
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}
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}
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export default BLEHandler1
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