微信小程序连接蓝牙设备控制智能小车

Page({

    data: {

        discoverFlag: false,

        devices: [],

        deviceId: '',

        serviceId: '',

        services: [],

        showFlage: true,

        name: '',

        characteristics: [],

        characteristicId: '',

        showFlage1: false,

        showFlage2: false,

        available: false,

        read: false,

        write: false,

        showKeyboard: false,

        inputKey: true,

        showData: '',

        sliderValue: 1, // 初始值为一档

    },

    sliderChange: function(e) {  

        this.setData({  

          sliderValue: e.detail.value  

        })  

      },

    onLoad: function (options) {

        wx.openBluetoothAdapter({

            success(res) {

                console.log(res)

            }

        })

    },

    onShow: function () {

        let that = this

        wx.getBluetoothAdapterState({

            success(res) {

                console.log(res)

                if (res.available) {

                    that.setData({

                        available: true

                    })

                } else {

                    that.setData({

                        available: false

                    })

                    wx.showToast({

                        title: '请打开蓝牙',

                    })

                }

            }

        })

        wx.openBluetoothAdapter({

            success(res) {

                console.log(res)

            }

        })

    },

    discoverDevices() {

        let that =