program/src/utils/bluetooth.js

export default {
  // 发送开启脑电数据包指令
  sendOpen(deviceId, serviceId, Cid) {
    // 向蓝牙设备发送一个0x00的16进制数据
    let buffer = new ArrayBuffer(8)
    let dataView = new DataView(buffer)
    dataView.setUint8(0, '0xaa')
    dataView.setUint8(1, '0xcc')
    dataView.setUint8(2, '0x03')
    dataView.setUint8(3, '0x00')
    dataView.setUint8(4, '0x00')
    dataView.setUint8(5, '0x00')
    dataView.setUint8(6, '0xff')
    dataView.setUint8(7, '0xfd')
    // 向低功耗蓝牙设备特征值中写入二进制数据
    console.log(buffer)
    wx.writeBLECharacteristicValue({
      deviceId: deviceId,
      serviceId: serviceId,
      characteristicId: Cid,
      value: buffer,
      success: function (res) {
        console.log('开启脑电数据包成功')
        console.log(res)
      },
      fail: function (err) {
        console.log('开启脑电数据包失败')
        console.log(err)
      }

    })
  },
  // 发送开启教具脑控指令
  sendControl(deviceId, serviceId, Cid) {
    const that = this
    // 向蓝牙设备发送一个0x00的16进制数据
    let buffer = new ArrayBuffer(8)
    let dataView = new DataView(buffer)
    dataView.setUint8(0, '0xaa')
    dataView.setUint8(1, '0xcc')
    dataView.setUint8(2, '0x03')
    dataView.setUint8(3, '0x00')
    dataView.setUint8(4, '0x00')
    dataView.setUint8(5, '0x00')
    dataView.setUint8(6, '0x07')
    dataView.setUint8(7, '0xf5')
    // 向低功耗蓝牙设备特征值中写入二进制数据
    console.log(buffer)
    wx.writeBLECharacteristicValue({
      deviceId: deviceId,
      serviceId: serviceId,
      characteristicId: Cid,
      value: buffer,
      success: function (res) {
        console.log('开启教具脑控成功')
        // that.sendOpen()
        console.log(res)
      },
      fail: function (err) {
        console.log('开启教具脑控失败')
        console.log(err)
      }

    })
  },
  // 发送连接玩具指令
  sendConnect(index, deviceId, serviceId, Cid) {
    const that = this
    // 玩具对应指令数组
    let arr = ['0x01', '0x02', '0x03', '0x04', '0x05', '0x06', '0x07', '0x08', '0x09', '0x0a', '0x0b']
    let arr1 = [0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b]
    let CheckSum = ((0x03 + 0x00 + arr1[index] + 0x00 + 0x0a) ^ 0xFFFFFFFF) & 0xFF
    // 向蓝牙设备发送指令
    let buffer = new ArrayBuffer(8)
    let dataView = new DataView(buffer)
    dataView.setUint8(0, '0xaa')
    dataView.setUint8(1, '0xcc')
    dataView.setUint8(2, '0x03')
    dataView.setUint8(3, '0x00')
    dataView.setUint8(4, arr[index])
    dataView.setUint8(5, '0x00')
    dataView.setUint8(6, '0x0a')
    dataView.setUint8(7, '0xf1')
    // 向低功耗蓝牙设备特征值中写入二进制数据
    console.log(buffer)
    wx.writeBLECharacteristicValue({
      deviceId: deviceId,
      serviceId: serviceId,
      characteristicId: Cid,
      value: buffer,
      success: function (res) {
        console.log('发送连接玩具指令成功')
        wx.showLoading({
          title: '正在创建连接',
        })
        console.log(res)
      },
      fail: function (err) {
        console.log('发送连接玩具指令失败')
        wx.showModal({
          showCancel: false,
          title: '提示',
          content: '指令发送失败',
        })
        console.log(err)
      }

    })
  },
  //发送断开玩具的指令
  sendEnd(deviceId, serviceId, Cid) {
    //AA CC 03 00 00 00 09 F3
    let buffer = new ArrayBuffer(8)
    let dataView = new DataView(buffer)
    dataView.setUint8(0, '0xaa')
    dataView.setUint8(1, '0xcc')
    dataView.setUint8(2, '0x03')
    dataView.setUint8(3, '0x00')
    dataView.setUint8(4, '0x00')
    dataView.setUint8(5, '0x00')
    dataView.setUint8(6, '0x09')
    dataView.setUint8(7, '0xf3')
    // 向低功耗蓝牙设备特征值中写入二进制数据
    console.log(buffer)
    wx.writeBLECharacteristicValue({
      deviceId: deviceId,
      serviceId: serviceId,
      characteristicId: Cid,
      value: buffer,
      success: function (res) {
        console.log('断开玩具成功')
        // that.sendOpen()
        console.log(res)
      },
      fail: function (err) {
        console.log('断开玩具失败')
        console.log(err)
      }

    })
  },
  // 发送停止发送脑电数据包指令
  sendPause(deviceId, serviceId, Cid) {
    let that = this
    // 向蓝牙设备发送一个0x00的16进制数据
    let buffer = new ArrayBuffer(8)
    let dataView = new DataView(buffer)
    dataView.setUint8(0, '0xaa')
    dataView.setUint8(1, '0xcc')
    dataView.setUint8(2, '0x03')
    dataView.setUint8(3, '0x00')
    dataView.setUint8(4, '0x00')
    dataView.setUint8(5, '0x00')
    dataView.setUint8(6, '0x00')
    dataView.setUint8(7, '0xfc')
    // 向低功耗蓝牙设备特征值中写入二进制数据
    console.log(buffer)
    wx.writeBLECharacteristicValue({
      deviceId: deviceId,
      serviceId: serviceId,
      characteristicId: Cid,
      value: buffer,
      success: function (res) {
        console.log('停止数据发送成功')
        console.log(res)
      },
      fail: function (err) {
        console.log('停止数据发送失败')
        console.log(err)
      }
    })
  },
  // 通过字节码获取玩具
  connect_toy(hexStr) {
    let $toys = [
      {
        id: 1,
        hex: 'aadd0a0000',
        msg: "无连接设备",
        flag: false
      },
      {
        id: 1,
        hex: 'aadd0a0001',
        msg: "已连接到水柱音箱",
        flag: true
      },
      {
        id: 2,
        hex: 'aadd0a0002',
        msg: "已连接到喷雾恐龙（大）",
        flag: true
      },
      {
        id: 3,
        hex: 'aadd0a0003',
        msg: "已连接到喷雾恐龙（小)",
        flag: true
      },
      {
        id: 4,
        hex: 'aadd0a0004',
        msg: "已连接到轨道车",
        flag: true
      },
      {
        id: 5,
        hex: 'aadd0a0005',
        msg: "已连接到碰碰车",
        flag: true
      },
      {
        id: 6,
        hex: 'aadd0a0006',
        msg: "已连接到小车（大）",
        flag: true
      },
      {
        id: 7,
        hex: 'aadd0a0007',
        msg: "已连接到小车（中）",
        flag: true
      },
      {
        id: 8,
        hex: 'aadd0a0008',
        msg: "已连接到小车（小）",
        flag: true
      },
      {
        id: 9,
        hex: 'aadd0a0009',
        msg: '已连接到飞行器（大）',
        flag: true
      },
      {
        id: 10,
        hex: 'aadd0a000a',
        msg: "已连接到飞行器（小）",
        flag: true
      },
      {
        id: 11,
        hex: 'aadd0a000b',
        msg: "已连接到水母灯",
        flag: true
      },
      {
        id: 12,
        hex: 'aadd070000',
        msg: "无连接设备",
        flag: true
      },
    ]

    $toys.forEach(($val, $index) => {
      if (hexStr.substring(0, 10) == $val['hex']) {
        if ($val['flag']) {
          wx.hideLoading()
          wx.showToast({
            title: $val['title'],
            icon: 'success',
            duration: 1500
          })
          console.log($val['title'])

        } else {
          wx.hideLoading()
          wx.showToast({
            title: $val['title'],
            icon: 'nones',
            duration: 1500
          })
        }
        return $val['flag']
      }

    })
  },

  //  获取大包数据 进行绘制图表
  get_big_data(hex) {
    //当s1为 00时 数据有效
    let $s1 = hex.substr(8, 2)

    //专注度数据
    let $att = parseInt("0x" + hex.substr(12, 2))
    console.log('att', $att)
    //放松度数据
    let $med = parseInt("0x" + hex.substr(16, 2))
    console.log('$med', $med)

    //Delta数据
    let $delta_1 = hex.substr(hex.indexOf('0418') + 4, 2)
    let $delta_2 = hex.substr(hex.indexOf('0418') + 6, 2)
    let $delta_3 = hex.substr(hex.indexOf('0418') + 8, 2)
    let $delta = "0x" + $delta_1 << 16 | "0x" + $delta_2 << 8 | "0x" + $delta_3
    console.log('Delta', parseInt($delta, 16))

    //Theta数据
    let $theta_1 = hex.substr(hex.indexOf('0418') + 10, 2)
    let $theta_2 = hex.substr(hex.indexOf('0418') + 12, 2)
    let $theta_3 = hex.substr(hex.indexOf('0418') + 14, 2)
    let $theta = "0x" + $theta_1 << 16 | "0x" + $theta_2 << 8 | "0x" + $theta_3
    console.log('Theta', parseInt($theta, 16))


    //low_Alpha
    let $low_alpha_1 = hex.substr(hex.indexOf('0418') + 16, 2)
    let $low_alpha_2 = hex.substr(hex.indexOf('0418') + 18, 2)
    let $low_alpha_3 = hex.substr(hex.indexOf('0418') + 20, 2)
    let $low_alpha = "0x" + $low_alpha_1 << 16 | "0x" + $low_alpha_2 << 8 | "0x" + $low_alpha_3
    //high_Alpha
    let $high_alpha_1 = hex.substr(hex.indexOf('0418') + 22, 2)
    let $high_alpha_2 = hex.substr(hex.indexOf('0418') + 24, 2)
    let $high_alpha_3 = hex.substr(hex.indexOf('0418') + 26, 2)
    let $high_alpha = "0x" + $high_alpha_1 << 16 | "0x" + $high_alpha_2 << 8 | "0x" + $high_alpha_3
    let $alpha = ($high_alpha << 8) | $low_alpha
    console.log('Alpha', parseInt($alpha, 16))

    //low_beta
    let $low_beta_1 = hex.substr(hex.indexOf('0418') + 28, 2)
    let $low_beta_2 = hex.substr(hex.indexOf('0418') + 30, 2)
    let $low_beta_3 = hex.substr(hex.indexOf('0418') + 32, 2)
    let $low_beta = "0x" + $low_beta_1 << 16 | "0x" + $low_beta_2 << 8 | "0x" + $low_beta_3
    //high_beta
    let $high_beta_1 = hex.substr(hex.indexOf('0418') + 34, 2)
    let $high_beta_2 = hex.substr(hex.indexOf('0418') + 36, 2)
    let $high_beta_3 = hex.substr(hex.indexOf('0418') + 38, 2)
    let $high_beta = "0x" + $low_beta_1 << 16 | "0x" + $low_beta_2 << 8 | "0x" + $low_beta_3
    //Beta数据
    let $beta = ($high_beta << 8) | $low_beta
    console.log('Beta', parseInt($beta, 16))
    return {
      att: $att,
      med: $med,
      delta: $delta,
      theta: $theta,
      alpha: $alpha,
      beta: $beta
    }
  }

}