YD_WeChatApplet/subpackage/bluebooth/search.js

Page({
  data: {
    devices: [],
    isSearching: false,
    status: '未连接',
    connected: false,
    skipCount: 0,
    connectedDeviceId: null,
    deviceServices: [],
    deviceCharacteristics: [],
    blueIsOk: false
  },

  // 1. 初始化蓝牙模块
  startBluetooth() {
    const that = this
    wx.closeBluetoothAdapter({
      success:()=>{
        wx.openBluetoothAdapter({
          success: () => {
            // console.log('蓝牙初始化成功');
            this.setData({
              blueIsOk: true
            })
            that.searchDevices() //开始搜索设备
            // wx.showToast({ title: '蓝牙已开启', icon: 'success' });
          },
          fail: (res) => {
            console.error('蓝牙初始化失败', res);
            wx.showModal({
              title: '提示',
              content: '请打开手机蓝牙并授权小程序使用',
              showCancel: false,
            });
          }
        });
      }
    })
  },

  onLoad(options) {
    this.startBluetooth()
    console.log(options.params)
    if (options.params) {
      this.setData({
        params: options.params.replaceAll('*', '=').replaceAll('@', '&')
      })
      console.log(this.data.params)
    }
  },

  // 2. 搜索设备
  searchDevices() {
    const that = this
    if (!this.data.blueIsOk) return wx.showModal({
      title: '提示',
      content: '请打开手机蓝牙并授权小程序使用',
      showCancel: false,
    });
    this.setData({
      isSearching: true,
      devices: []
    });

    const last_device_id = wx.getStorageSync('device_id')
    const uuid = wx.getStorageSync('uuid')
    // if (uuid != '' && device_id != '') {
    //   wx.getConnectedBluetoothDevices({
    //     services: [uuid],
    //     success: ress => {
    //       console.log('aa', ress)
    //       console.log('看看有没有', ress)
    //       console.log('看看有没有', ress)
    //       console.log('看看有没有', ress)
    //       console.log('看看有没有', ress)
    //       if (ress.devices.length > 0) {
    //         for (let item of ress.devices) {
    //           if (item.deviceId == device_id) {
    //             that.setData({
    //               connectedDeviceId: device_id,
    //               devices: [item, ...that.data.devices]
    //             }, () => {
    //               console.log('nowDevice===========>', that.data.devices)
    //               console.log('nowDevice===========>', that.data.devices)
    //               console.log('nowDevice===========>', that.data.devices)
    //               console.log('nowDevice===========>', that.data.devices)
    //             })
    //           }
    //         }
    //       } else {
    //         //尝试链接原来的蓝牙
    //         wx.closeBLEConnection()
    //         return
    //         wx.showModal({
    //           title: '是否连接上次的设备？',
    //           content: '',
    //           complete: (res) => {
    //             if (res.cancel) {

    //             }

    //             if (res.confirm) {
    //               that.connectDevice({
    //                 currentTarget: {
    //                   dataset: {
    //                     device: {
    //                       deviceId: device_id
    //                     }
    //                   }
    //                 }
    //               })
    //             }
    //           }
    //         })
    //         // that.connectDevice({
    //         //   currentTarget:{
    //         //     dataset:{
    //         //       device:{deviceId:device_id}
    //         //     }
    //         //   }
    //         // })
    //       }
    //     }
    //   })
    // }

    // 启动搜索
    wx.startBluetoothDevicesDiscovery({
      allowDuplicatesKey: false,
      success: () => {
        console.log('开始搜索设备');
        // 监听发现设备事件
        wx.onBluetoothDeviceFound((res) => {
          console.log('发现新设备', res.devices);
          res.devices.forEach(device => {
            if (device.name == 'YD-Jump' || device.name == 'YD_Jump' || device.name == 'YD-O1' || device.localName == 'YD-O1' || device.localName == 'YD-Jump' || device.localName == 'YD_Jump') {
              const exists = this.data.devices.find(d => d.deviceId === device.deviceId);
              if (!exists) {
                if (device.deviceId == last_device_id) {
                  that.connectDevice({
                    currentTarget: {
                      dataset: {
                        device: device
                      }
                    }
                  })
                }
                this.setData({
                  devices: [...this.data.devices, device]
                });
              }
            }
          });
        });
      },
      fail: (err) => {
        console.error('搜索设备失败', err);
        wx.showToast({
          title: '搜索失败',
          icon: 'error'
        });
        this.setData({
          isSearching: false
        });
      }
    });

    // 设置超时自动停止
    setTimeout(() => {
      wx.stopBluetoothDevicesDiscovery();
      this.setData({
        isSearching: false
      });
      console.log('停止搜索');
    }, 9000); // 10秒后停止
  },

  // 3. 连接设备
  connectDevice(e) {
    if (this.data.connectedDeviceId) { //如果已经链接先断开连接
      this.disconnectDevice()
    }
    const device = e.currentTarget.dataset.device;
    console.log('尝试连接设备', device);
    wx.showLoading({
      title: '连接中...',
    })

    wx.createBLEConnection({
      deviceId: device.deviceId,
      success: () => {
        console.log('连接成功', device.deviceId);
        console.log('连接成功', device);
        wx.showToast({
          title: '连接成功',
          icon: 'success'
        });

        this.setData({
          status: '已连接',
          connected: true,
          connectedDeviceId: device.deviceId
        });
        wx.setStorageSync('device_id', device.deviceId)
        wx.setStorageSync('device_name', device.name)
        if (device.name == 'YD-O1') {
          wx.setStorageSync('uuid', device.advertisServiceUUIDs[0])
        } else {
          // 获取设备的服务
          wx.getBLEDeviceServices({
            deviceId: device.deviceId,
            success: (res) => {
              console.log('设备服务', res.services);
              wx.setStorageSync('uuid', res.services[0].uuid)
            },
            fail: (err) => {
              console.error('获取服务失败', err);
            }
          });
        }
        if (this.data.params) {
          wx.redirectTo({
            url: '/subpackage/train/bluetooth/train?' + this.data.params,
          })
        }
      },
      fail: (err) => {
        console.error('连接失败', err);
        wx.showToast({
          title: '连接失败',
          icon: 'error'
        });
      },
      complete: () => {
        wx.hideLoading()
      }
    });
  },

  // 获取设备的服务
  getDeviceServices(deviceId) {
    wx.getBLEDeviceServices({
      deviceId: deviceId,
      success: (res) => {
        console.log('设备服务', res.services);
        this.setData({
          deviceServices: res.services
        });

        wx.getConnectedBluetoothDevices({
          services: [res.services[0].uuid],
          success: res => {
            console.log('aaaaa333333===>', res)
          }
        })
        wx.getConnectedBluetoothDevices({
          services: [res.services[1].uuid],
          success: res => {
            console.log('aaaaa444444===>', res)
          }
        })

        // 获取第一个服务的特征值
        // if (res.services.length > 0) {
        //   this.getDeviceCharacteristics(deviceId, res.services[0].uuid);
        // }
      },
      fail: (err) => {
        console.error('获取服务失败', err);
      }
    });
  },

  // 获取第一个服务的特征值
  getDeviceCharacteristics(deviceId, serviceId) {
    wx.getBLEDeviceCharacteristics({
      deviceId: deviceId,
      serviceId: serviceId,
      success: (res) => {
        console.log('服务特征值', res.characteristics);
        this.setData({
          deviceCharacteristics: res.characteristics
        });

        // 启动接收数据通知
        this.startNotify(deviceId, serviceId);

        // 发送启动自由跳绳的命令
        this.startFreeJumpRope(deviceId, serviceId);
      },
      fail: (err) => {
        console.error('获取特征值失败', err);
      }
    });
  },

  // 启动接收数据通知
  startNotify(deviceId, serviceId) {
    const characteristics = this.data.deviceCharacteristics;
    characteristics.forEach(characteristic => {
      if (characteristic.properties.notify) {
        wx.notifyBLECharacteristicValueChange({
          deviceId: deviceId,
          serviceId: serviceId,
          characteristicId: characteristic.uuid,
          state: true,
          success: () => {
            console.log('启动数据通知');
          },
          fail: (err) => {
            console.error('启动通知失败', err);
          }
        });
        // 接收数据
        wx.onBLECharacteristicValueChange((res) => {
          console.log('接收到数据', res.value);
          if (res.deviceId === deviceId && res.characteristicId === characteristic.uuid) {
            console.log('接收到数据', res.value);
            this.handleReceivedData(res.value);
          }
        });
      }
    });
  },

  // 发送启动自由跳绳命令
  startFreeJumpRope(deviceId, serviceId) {
    const command = 3; // 启动自由跳绳的命令
    const code = 1;
    const parameter = 0; // 启动自由跳绳，参数为0
    // 获取蓝牙设备的特征值（特征值应是你已经连接的蓝牙设备的写入特征值）
    const characteristic = this.data.deviceCharacteristics.find(c => c.properties.write);
    if (!characteristic) {
      console.error('没有可写的特征值');
      return;
    }
    // 构建命令数据
    const commandData = new ArrayBuffer(4);
    const dataView = new DataView(commandData);
    dataView.setUint8(0, 0x03);
    dataView.setUint8(1, 0x01);
    dataView.setUint8(2, 0x00);
    dataView.setUint8(3, 0x00);

    // 发送命令到设备
    wx.writeBLECharacteristicValue({
      deviceId: deviceId,
      serviceId: serviceId,
      characteristicId: characteristic.uuid,
      value: commandData,
      success: () => {
        console.log("自由跳绳已启动！");
      },
      fail: (error) => {
        console.error("启动自由跳绳失败", error);
      }
    });
  },
  // 处理接收到的数据
  handleReceivedData(arrayBuffer) {
    // 1. 创建 Int16Array 视图（从 ArrayBuffer 读取）
    const int16Array = new Int16Array(arrayBuffer);
    // 2. 检查长度是否足够（至少 3 个元素）
    if (int16Array.length < 3) {
      console.error("Int16Array length is too short!");
      return;
    }
    // 3. 读取索引 2 的值
    const value = int16Array[2];
    // 4. 更新数据
    this.setData({
      skipCount: value
    });
  },

  // 4. 断开连接
  disconnectDevice(id) {
    wx.closeBLEConnection({
      deviceId: id || this.data.connectedDeviceId,
      success: () => {
        console.log('断开连接');
        this.setData({
          status: '未连接',
          connected: false
        });
      }
    });
  }
});