165 lines
4.6 KiB
JavaScript
165 lines
4.6 KiB
JavaScript
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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connected: false,
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name: '',
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weight: "",
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imp: "",
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devices: [],
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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,
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interval: 500, //上报设备的间隔
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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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let that = this
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wx.onBluetoothDeviceFound((res) => {
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res.devices.forEach(device => {
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device.advertisData = device.advertisData ? device.advertisData : ''
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if (!device.name && !device.localName) {
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let value = ab2hex(device.advertisData, "")
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let id = value.substring(12, 16)
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if (value.indexOf('c0') !== -1 && id == '0002') {
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device.name = "PCL-体脂称"
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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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device.macAddr = ab2hex(tempMac, ':').toUpperCase()
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//
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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 dataT = {}
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if (idx === -1) {
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dataT[`devices[${foundDevices.length}]`] = device
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} else {
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dataT[`devices[${idx}]`] = device
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}
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this.setData(dataT)
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let msg = parseInt(value.substring(16, 18), 16).toString(2)
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let weight = parseInt(value.substring(4, 8), 16)
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let type = msg.substring(5, 6) //0实时,1稳定
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let num = msg.substring(3, 5) //小数点
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let unit = msg.substring(1, 3) //单位
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let dw1 = "kg"
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if (unit == "10") {
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dw1 = "lb"
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}
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if (num == "00") {
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weight = parseInt(value.substring(4, 8), 16) / 10
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}
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if (num == "10") {
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if (unit == "10") {
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dw1 = "lb"
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weight = parseInt(value.substring(4, 8), 16) / 10
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} else {
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weight = parseInt(value.substring(4, 8), 16) / 100
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}
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}
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that.setData({
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weight: "您的实时体重是：" + weight + dw1
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})
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if (type == '1') {
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that.setData({
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weight: "您的稳定体重是：" + weight + dw1
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})
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that.setData({
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imp:"阻抗是：" + parseInt(value.substring(8, 12), 16) / 10
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})
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}
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}
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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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//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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wx.stopBluetoothDevicesDiscovery();
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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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imp: ""
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})
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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.stopBluetoothDevicesDiscovery();
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wx.closeBluetoothAdapter()
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this._discoveryStarted = false
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wx.showToast({
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title: '结束流程',
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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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imp: ""
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})
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},
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});
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