• lanya


    1. var app = getApp()
    2.  
      Page({
    3.  
      data: {
    4.  
      motto: 'Hello World',
    5.  
      openBLE:'打开蓝牙设备',
    6.  
      startBLEDiscovery:'初始化蓝牙设备',
    7.  
      startBLEDevices:'目标定位',
    8.  
      reStartSearchBLE:'重置蓝牙',
    9.  
      startSearchBLE:'默认空',
    10.  
      userInfo: {},
    11.  
      deviceId: '',
    12.  
      searchFlag:true,
    13.  
      deviceRSSI:'',
    14.  
      deviceName:'',
    15.  
      deviceId:[],
    16.  
      advertisServiceUUIDs: [],
    17.  
      advertisData:[],
    18.  
      canvasPointX:'',
    19.  
      canvasPointY:'',
    20.  
      avatarUrl:'../index/bg-image.jpg',
    21.  
      showPosition:''
    22.  
      },
    23.  
      //事件处理函数
    24.  
      bindViewTap: function() {
    25.  
      wx.navigateTo({
    26.  
      url: '../logs/logs'
    27.  
      })
    28.  
      },
    29.  
      onLoad: function () {
    30.  
      var that = this
    31.  
      //调用应用实例的方法获取全局数据
    32.  
      //that.setData({ deviceId: opt.deviceId })
    33.  
      app.getUserInfo(function(userInfo){
    34.  
      //更新数据
    35.  
      that.setData({
    36.  
      userInfo:userInfo
    37.  
      })
    38.  
      //判断兼容性
    39.  
      if (wx.openBluetoothAdapter) {
    40.  
      //打开蓝牙适配器,如果没有打开 showtoast
    41.  
      wx.openBluetoothAdapter({
    42.  
      success: function(res){
    43.  
      // success
    44.  
      //获取本机的蓝牙适配器状态
    45.  
      wx.getBluetoothAdapterState({
    46.  
      success: function(res){
    47.  
      // success
    48.  
      that.setData({
    49.  
      searchFlag:true
    50.  
      })
    51.  
      },
    52.  
      fail: function(res) {
    53.  
      // fail
    54.  
      that.setData({
    55.  
      searchFlag:false
    56.  
      })
    57.  
      },
    58.  
      complete: function(res) {
    59.  
      // complete
    60.  
      }
    61.  
      })
    62.  
      },
    63.  
      fail: function(res) {
    64.  
      // fail 本机是否已经打开蓝牙设备
    65.  
      wx.showToast({title:'请打开本机蓝牙设备,重新扫码', duration:10000 })
    66.  
      },
    67.  
      complete: function(res) {
    68.  
      // complete
    69.  
      }
    70.  
      })
    71.  
      } else {
    72.  
      // 如果希望用户在最新版本的客户端上体验您的小程序,可以这样子提示
    73.  
      wx.showModal({
    74.  
      title: '提示',
    75.  
      content: '当前微信版本过低,无法使用该功能,请升级到最新微信版本后重试。'
    76.  
      })
    77.  
      }
    78.  
       
    79.  
      })
    80.  
      },
    81.  
       
    82.  
      startBLEDevices: function(){
    83.  
      var that = this
    84.  
      wx.startBluetoothDevicesDiscovery({
    85.  
      services: [],
    86.  
      success: function(res){
    87.  
      //获取本机蓝牙设备状态
    88.  
      // success
    89.  
      that.setData({
    90.  
      showPosition:setInterval(that.devicesFunc,1000)
    91.  
      })
    92.  
      },
    93.  
      fail: function(res) {
    94.  
      // fail
    95.  
      },
    96.  
      complete: function(res) {
    97.  
      // complete
    98.  
      }
    99.  
      })
    100.  
      },
    101.  
      // startBLEDevices: function(){
    102.  
      // var that = this
    103.  
      // that.setData({
    104.  
      // showPosition:setInterval(that.devicesFunc,1000)
    105.  
      // })
    106.  
      // },
    107.  
      devicesFunc: function(){
    108.  
      var that = this
    109.  
       
    110.  
      wx.getBluetoothDevices({
    111.  
      success: function(res){
    112.  
      // console.log(res);
    113.  
      var arrayRSSI = new Array();
    114.  
      var arraydeviceName = new Array();
    115.  
      var arraydeviceId = new Array();
    116.  
      // var arrayUUIDs = new Array();
    117.  
      var arrayadvertisData = new Array();
    118.  
      var pointADistance = '';
    119.  
      var pointBDistance = '';
    120.  
      var pointCDistance = '';
    121.  
      for(var i = 0; i<res.devices.length;i++){
    122.  
      //console.log(res.devices[i].name);
    123.  
      if(res.devices[i].name.indexOf('craft')==0){
    124.  
      //console.log(res.devices[i]);
    125.  
      arrayRSSI.push(res.devices[i].RSSI);
    126.  
      arraydeviceName.push(res.devices[i].name);
    127.  
      arraydeviceId[i]= res.devices[i].deviceId;
    128.  
      arrayUUIDs[i]= res.devices[i].advertisServiceUUIDs[i];
    129.  
      arrayadvertisData[i]= res.devices[i].advertisData ;
    130.  
      调用计算rssi对应距离的函数
    131.  
      var iRssi = Math.abs(arrayRSSI[i]);
    132.  
      var power = (iRssi-59)/(10*2.0);
    133.  
      var mm = Math.pow(10, power);
    134.  
      console.log(arraydeviceName[i]+"距离的位置是"+mm+"米");
    135.  
      01,02,03分别为,(2,0),(2,2),(0,2)固定坐标点,做定位
    136.  
       
    137.  
      if(res.devices[i].name.indexOf('craft01')==0){
    138.  
       
    139.  
      var pointARSSi = res.devices[i].RSSI ;
    140.  
      var iRssi = Math.abs(pointARSSi);
    141.  
      var power = (iRssi-55)/(10*2.0);
    142.  
      var pointADistance = Math.pow(10, power);
    143.  
      console.log("a"+pointADistance);
    144.  
      console.log(pointARSSi);
    145.  
       
    146.  
      }
    147.  
      if(res.devices[i].name.indexOf('craft02')==0){
    148.  
       
    149.  
      var pointBRSSi = res.devices[i].RSSI;
    150.  
      var iRssi = Math.abs(pointBRSSi);
    151.  
      var power = (iRssi-55)/(10*2.0);
    152.  
      var pointBDistance = Math.pow(10, power);
    153.  
      console.log("b"+pointBDistance);
    154.  
      console.log(pointBRSSi);
    155.  
       
    156.  
      }
    157.  
      if(res.devices[i].name.indexOf('craft03')==0){
    158.  
       
    159.  
      var pointCRSSi = res.devices[i].RSSI;
    160.  
      var iRssi = Math.abs(pointCRSSi);
    161.  
      var power = (iRssi-57)/(10*2.0);
    162.  
      var pointCDistance = Math.pow(10, power);
    163.  
      console.log("c"+pointCDistance);
    164.  
      console.log(pointCRSSi);
    165.  
      }
    166.  
      }
    167.  
      }
    168.  
      // 从 arrayRSSI 取三个距离定位点最近的ibeacon参与定位
    169.  
      if(arrayRSSI.length > 3){
    170.  
      //根据arrayRSSI进行信号强弱排序.距离越远rssi值越小
    171.  
      for(var i = 0 ; i < arrayRSSI.length ; i ++){
    172.  
      for(var j = i+1 ; j< arrayRSSI.length ; j++){
    173.  
      if(arrayRSSI[i]<arrayRSSI[j]){
    174.  
      var select = arrayRSSI[i];
    175.  
      arrayRSSI[i] = arrayRSSI[j];
    176.  
      arrayRSSI[j] = select;
    177.  
      }
    178.  
      }
    179.  
      }
    180.  
      //获取最近的三个距离
    181.  
      for(var i = 0 ; i < 3; i++){
    182.  
      if(i==0){
    183.  
      var pointARSSi = res.devices[i].RSSI ;
    184.  
      var iRssi = Math.abs(pointARSSi);
    185.  
      var power = (iRssi-55)/(10*2.0);
    186.  
      var pointADistance = Math.pow(10, power);
    187.  
      console.log("a"+pointADistance);
    188.  
      console.log(pointARSSi);
    189.  
      }
    190.  
      if(i==1){
    191.  
       
    192.  
      var pointBRSSi = res.devices[i].RSSI;
    193.  
      var iRssi = Math.abs(pointBRSSi);
    194.  
      var power = (iRssi-55)/(10*2.0);
    195.  
      var pointBDistance = Math.pow(10, power);
    196.  
      console.log("b"+pointBDistance);
    197.  
      console.log(pointBRSSi);
    198.  
      }
    199.  
      if(i==2){
    200.  
      var pointCRSSi = res.devices[i].RSSI;
    201.  
      var iRssi = Math.abs(pointCRSSi);
    202.  
      var power = (iRssi-57)/(10*2.0);
    203.  
      var pointCDistance = Math.pow(10, power);
    204.  
      console.log("c"+pointCDistance);
    205.  
      console.log(pointCRSSi);
    206.  
      }
    207.  
      }
    208.  
      }
    209.  
      //获取定位点的x和y
    210.  
      if(!pointADistance==''&&!pointBDistance==''&&!pointCDistance==''){
    211.  
      var pointDX='';var pointDY = '';
    212.  
      var p = Math.pow(pointADistance,2)/10-Math.pow(pointBDistance,2)/10;
    213.  
      pointDX = 2.5 - p;
    214.  
       
    215.  
      var m = Math.pow(pointADistance,2)/10-Math.pow(pointCDistance,2)/10;
    216.  
      pointDY = 2.5 - m;
    217.  
       
    218.  
      console.log('目标所在位置X是'+pointDX);
    219.  
      console.log('目标所在位置Y是'+pointDY);
    220.  
      if(pointDX > 0 && pointDY > 0){
    221.  
      wx.showToast({title:'欢迎进入25楼craft', duration:4000 });
    222.  
      }
    223.  
      that.setData({
    224.  
      canvasPointX:pointDX,
    225.  
      canvasPointY:pointDY
    226.  
      })
    227.  
       
    228.  
      //创建画布
    229.  
      //计算坐标点在规定canvas上的位置显示
    230.  
      var context = wx.createCanvasContext();
    231.  
      context.setStrokeStyle("#00ff00");
    232.  
      //a,b,c,d,e,f a,b起始坐标,c半径,d,e起始和终止角度
    233.  
      context.arc(that.data.canvasPointX*30,that.data.canvasPointY*30,5,0,2*Math.PI);
    234.  
      context.fill();
    235.  
      wx.drawCanvas({
    236.  
      canvasId: 'firstCanvas',
    237.  
      actions: context.getActions() // 获取绘图动作数组
    238.  
      })
    239.  
       
    240.  
      wx.showModal({title:'X轴:'+pointDX+'Y轴:'+pointDY, duration:5000 });
    241.  
      //开始网络请求
    242.  
      wx.request({
    243.  
      url: 'http://craftww.cn/weixinIbeacon/index.php',
    244.  
      data: {},
    245.  
      method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT
    246.  
      // header: {}, // 设置请求的 header
    247.  
      success: function(res){
    248.  
      // success
    249.  
      },
    250.  
      fail: function(res) {
    251.  
      // fail
    252.  
      },
    253.  
      complete: function(res) {
    254.  
      // complete
    255.  
      }
    256.  
      })
    257.  
       
    258.  
      }else{
    259.  
      wx.showToast({title:'正在搜索...', duration:1000 })
    260.  
      开始网络请求
    261.  
      wx.request({
    262.  
      url: 'http://craftww.cn/weixinIbeacon/index.php',
    263.  
      data: {},
    264.  
      method: 'GET', // OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT
    265.  
      // header: {}, // 设置请求的 header
    266.  
      success: function(res){
    267.  
      // success
    268.  
      },
    269.  
      fail: function(res) {
    270.  
      // fail
    271.  
      },
    272.  
      complete: function(res) {
    273.  
      // complete
    274.  
      }
    275.  
      })
    276.  
      }
    277.  
       
    278.  
      },
    279.  
      fail: function(res) {
    280.  
      // fail
    281.  
      },
    282.  
      complete: function(res) {
    283.  
      // complete
    284.  
      }
    285.  
      })
    286.  
      } ,
    287.  
      //动态显示
    288.  
      createList: function(thisName){
    289.  
      var that = this
    290.  
      that.setData({
    291.  
      array:[{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"},{deviceDistance:"1"}]
    292.  
      })
    293.  
      },
    294.  
      reStartSearchBLE: function(){
    295.  
      var that = this
    296.  
      //清除本地数据缓存
    297.  
      wx.stopBluetoothDevicesDiscovery({
    298.  
      success: function(res){
    299.  
      // success
    300.  
      },
    301.  
      fail: function(res) {
    302.  
      // fail
    303.  
      },
    304.  
      complete: function(res) {
    305.  
      // complete
    306.  
      }
    307.  
      })
    308.  
      wx.clearStorageSync();
    309.  
      clearInterval(that.data.showPosition);
    310.  
      console.log(that.data.showPosition);
    311.  
      // that.context.clearRect(0,0,canvas.width,canvas.height);
    312.  
      //断开蓝牙
    313.  
      var that = this
    314.  
      wx.closeBluetoothAdapter({
    315.  
      success: function(res){
    316.  
      // success
    317.  
      console.log('重置成功');
    318.  
      //打开蓝牙适配器,如果没有打开 showtoast
    319.  
      wx.openBluetoothAdapter({
    320.  
      success: function(res){
    321.  
      // success
    322.  
      //获取本机的蓝牙适配器状态
    323.  
      wx.getBluetoothAdapterState({
    324.  
      success: function(res){
    325.  
      // success
    326.  
       
    327.  
      },
    328.  
      fail: function(res) {
    329.  
      // fail
    330.  
      },
    331.  
      complete: function(res) {
    332.  
      // complete
    333.  
      }
    334.  
      })
    335.  
      },
    336.  
      fail: function(res) {
    337.  
      },
    338.  
      complete: function(res) {
    339.  
      // complete
    340.  
      }
    341.  
      })
    342.  
      },
    343.  
      fail: function(res) {
    344.  
      // fail
    345.  
      },
    346.  
      complete: function(res) {
    347.  
      // complete
    348.  
      }
    349.  
      })
    350.  
      }
    351.  
      //zheli
    352.  
      })
    353.  
       
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  • 原文地址:https://www.cnblogs.com/moonvan/p/9453286.html
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