329 lines
8.0 KiB
JavaScript
329 lines
8.0 KiB
JavaScript
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const util = require("../../utils/util");
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const {
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inArray,
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ab2hex
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} = util
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Page({
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data: {
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devices: [],
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connected: false,
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cmd: '',
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name: '',
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weight: "",
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text: "",
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imp: "",
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deviceId: null,
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},
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onLoad: function() {},
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// 初始化蓝牙模块
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openBluetoothAdapter() {
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wx.openBluetoothAdapter({
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success: (res) => {
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console.log('openBluetoothAdapter success', res)
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wx.showToast({
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title: '蓝牙连接中',
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icon: "none"
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})
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this.startBluetoothDevicesDiscovery()
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},
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fail: (res) => {
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if (res.errCode === 10001) {
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wx.showToast({
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title: '请打开蓝牙',
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icon: "none"
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})
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// 监听本机蓝牙状态变化的事件
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wx.onBluetoothAdapterStateChange((res) => {
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console.log('onBluetoothAdapterStateChange', res)
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if (res.available) {
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this.startBluetoothDevicesDiscovery()
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}
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})
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}
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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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if (this._discoveryStarted) {
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return
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}
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this._discoveryStarted = true
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wx.startBluetoothDevicesDiscovery({
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allowDuplicatesKey: true, //是否允许重复上报同一设备
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services: [ //要搜索蓝牙设备主 service 的 uuid 列表
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"FFE0",
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],
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success: (res) => {
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console.log('startBluetoothDevicesDiscovery success', res)
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this.onBluetoothDeviceFound()
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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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wx.stopBluetoothDevicesDiscovery()
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},
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// 找到新设备的事件
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onBluetoothDeviceFound() {
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wx.onBluetoothDeviceFound((res) => {
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res.devices.forEach(device => {
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if (device.name.indexOf('AiLink_') != -1) {
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wx.stopBluetoothDevicesDiscovery() //搜索到名称为“AiLink_”的蓝牙后，停止搜寻附近的蓝牙
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const foundDevices = this.data.devices
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const idx = inArray(foundDevices, 'deviceId', device.deviceId)
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const data = {}
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let buff = device.advertisData.slice(-6)
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device.mac = new Uint8Array(buff) // 保存广播数据中的mac地址，这是由于iOS不直接返回mac地址
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let tempMac = Array.from(device.mac)
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tempMac.reverse()
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device.macAddr = ab2hex(tempMac, ':').toUpperCase()
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if (idx === -1) {
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data[`devices[${foundDevices.length}]`] = device
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} else {
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data[`devices[${idx}]`] = device
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}
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console.log("131", data)
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this.setData(data)
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}
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})
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})
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},
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// 连接低功耗蓝牙设备
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createBLEConnection(e) {
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this._connLoading = true
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wx.showLoading({
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title: '连接中',
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})
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setTimeout(() => {
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if (this._connLoading) {
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this._connLoading = false
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wx.hideLoading()
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}
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}, 6000)
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const ds = e.currentTarget.dataset
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const index = ds.index
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this._device = this.data.devices[index]
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const deviceId = ds.deviceId
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const name = ds.name
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this.mac = ds.mac
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wx.createBLEConnection({
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deviceId,
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success: (res) => {
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this.setData({
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connected: true,
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name,
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deviceId,
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})
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console.log("createBLEConnection:success")
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this.onBLEConnectionStateChange()
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this.getBLEDeviceServices(deviceId)
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},
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fail: res => {
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this._connLoading = false
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wx.hideLoading()
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wx.showToast({
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title: '连接失败',
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icon: 'none'
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})
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}
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})
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},
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//监听蓝牙连接状态
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onBLEConnectionStateChange() {
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wx.onBLEConnectionStateChange((res) => {
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if (!res.connected) {
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setTimeout(() => {
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wx.showToast({
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title: '连接已断开',
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icon: 'none'
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})
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}, 500)
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this.setData({
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connected: false,
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devices: [],
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weight: "",
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text: "",
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imp: ""
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})
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}
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})
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},
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// 获取蓝牙设备的 serviceId
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getBLEDeviceServices(deviceId) {
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wx.getBLEDeviceServices({
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deviceId,
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success: (res) => {
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for (let i = 0; i < res.services.length; i++) {
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if (res.services[i].isPrimary && res.services[i].uuid.indexOf('FFE0') > -1) {
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wx.showLoading({
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title: '获取设备的UUID成功',
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})
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this.getBLEDeviceCharacteristics(deviceId, res.services[i].uuid)
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return
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}
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}
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}
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})
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},
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// 获取蓝牙设备某个服务中所有特征值(characteristic)
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/**
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* read: true读,write: true写,notify: true广播
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*/
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getBLEDeviceCharacteristics(deviceId, serviceId) {
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this._deviceId = deviceId
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this._serviceId = serviceId
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this._device.serviceId = serviceId
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wx.getBLEDeviceCharacteristics({
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deviceId,
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serviceId,
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success: (res) => {
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console.log('getBLEDeviceCharacteristics success', res.characteristics)
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wx.showLoading({
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title: '获取特征值成功',
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})
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//FFE1：write: true， FFE2：notify: true，FFE3：read: true, write: true, notify: true,
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for (let i = 0; i < res.characteristics.length; i++) {
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let characteristic = res.characteristics[i];
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if (characteristic.uuid.indexOf("FFE2") != -1) {
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if (characteristic.properties.notify == true) {
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this.notifyBLECharacteristicValue(deviceId, serviceId, characteristic
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.uuid)
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console.log("ffe2服务的notifyId获取成功")
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}
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if (characteristic.properties.read == true) {
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that.readId = characteristic.uuid
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}
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if (characteristic.properties.write == true) {
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that.writeId = characteristic.uuid
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}
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break;
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}
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}
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},
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fail(res) {
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console.error('getBLEDeviceCharacteristics', res)
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}
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})
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},
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//解析蓝牙返回数据
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notifyBLECharacteristicValue(deviceId, serviceId, notifyId) {
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let that = this
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wx.notifyBLECharacteristicValueChange({
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state: true, // 启用 notify 功能
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deviceId: deviceId,
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serviceId: serviceId,
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characteristicId: notifyId,
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success(res) {
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wx.onBLECharacteristicValueChange(function(res) {
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let value = ab2hex(res.value);
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let num = value.substring(18, 19)
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let dw = value.substring(19, 20)
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let typeInfo = value.substring(10, 12)
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console.log("16进制转化:", value);
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if (value.length == 26) {
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let data = parseInt(value.substring(13, 18), 16)
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let dw1 = "kg"
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if (dw == "1") {
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dw1 = "斤"
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console.log("体重单位：斤")
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}
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if (dw == "4") {
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dw1 = "st:lb"
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console.log("体重单位：st:lb,计算方法：1 * data + 5")
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}
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if (dw == "6") {
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dw1 = "lb"
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console.log("体重单位：lb")
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}
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if (num == "1") {
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data = parseInt(value.substring(13, 18), 16) / 10
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console.log("体重小数点后1位")
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}
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if (num == "2") {
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data = parseInt(value.substring(13, 18), 16) / 100
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console.log("体重小数点后2位")
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}
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if (num == "3") {
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data = parseInt(value.substring(13, 18), 16) / 1000
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console.log("体重小数点后3位")
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}
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if (typeInfo == "01") {
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console.log("实时体重：", data)
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that.setData({
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weight: "实时体重是：" + data + dw1
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})
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}
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if (typeInfo == "02") {
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console.log("稳定体重：", data)
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that.setData({
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weight: "稳定体重是：" + data + dw1
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})
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}
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}
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if (value.length == 30) {
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console.log("阻抗值：", value)
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if (typeInfo == "03") {
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let imp = parseInt(value.substring(17, 22), 16)
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that.setData({
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imp: "阻抗值：" + imp
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})
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}
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}
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if (value.toUpperCase() == "A90026023000589A") {
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console.log("测量完成")
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that.setData({
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text: "测量完成"
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})
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}
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});
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},
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fail(res) {
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console.log("测量失败", res.value);
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}
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});
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},
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/**
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* 断开蓝牙模块
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*/
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closeBluetoothAdapter() {
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wx.closeBluetoothAdapter()
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this._discoveryStarted = false
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wx.showToast({
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title: '断开蓝牙模块',
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icon: 'none'
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})
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this.setData({
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devices: [],
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weight: "",
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text: "",
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imp: ""
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})
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},
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// 断开与低功耗蓝牙设备的连接
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closeBLEConnection() {
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wx.closeBLEConnection({
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deviceId: this._deviceId
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})
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wx.showToast({
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title: '断开蓝牙连接',
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icon: 'none'
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})
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this.setData({
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connected: false,
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devices: [],
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text: "",
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weight: "",
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imp: ""
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})
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},
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});
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