添加 蓝牙通讯功能

src/common/adapter.ts

@@ -88,6 +88,15 @@ export function onBLECharacteristicValueChange(
 }
 
 /**
+ * 向低功耗蓝牙设备特征值中写入二进制数据。
+ * 注意：必须设备的特征值支持`write`才可以成功调用，
+ * 具体参照 characteristic 的 properties 属性
+ */
+export function writeBLECharacteristicValue(OBJECT: Taro.writeBLECharacteristicValue.Param) {
+  return Taro.writeBLECharacteristicValue(OBJECT)
+}
+
+/**
  * 停止搜寻附近的蓝牙外围设备。
  * 若已经找到需要的蓝牙设备并不需要继续搜索时，建议调用该接口停止蓝牙搜索。
  */
@@ -106,5 +115,6 @@ export const bluetooth = {
   readBLECharacteristicValue,
   notifyBLECharacteristicValueChange,
   onBLECharacteristicValueChange,
+  writeBLECharacteristicValue,
   stopBluetoothDevicesDiscovery
 }

src/common/utils.ts

@@ -55,3 +55,13 @@ export function ArrayBufferToString(buffer: ArrayBuffer) {
   })
   return hexArr.join('')
 }
+
+/** 解析蓝牙接收到的 十六进制 状态 */
+export function getBLEState(buffer: ArrayBuffer) {
+  return new Uint8Array(buffer)[0]
+}
+
+/** 解析蓝牙接收到的数据 */
+export function getBLEData(buffer: ArrayBuffer): string {
+  return String.fromCharCode.apply(null, new Uint8Array(buffer.slice(1, buffer.byteLength)))
+}

src/pages/home/device/device_list/index.tsx

 import api from '@/api/index'
 import { ComponentClass } from 'react'
 import { AtSwipeAction } from 'taro-ui'
-import { showMyToast, ArrayBufferToString } from '@/common/utils'
+import { connect } from '@tarojs/redux'
+import { bluetooth } from '@/common/adapter'
+import ListView from '@/conpoments/list_view'
 import Taro, { Component } from '@tarojs/taro'
+import { View, Text } from '@tarojs/components'
 import DeviceItem from '@/conpoments/device_item'
 import { getFilmList } from '@/actions/asyncCounter'
-import { View, Text, ScrollView } from '@tarojs/components'
-import { bluetooth } from '@/common/adapter'
-import ListView from '@/conpoments/list_view'
-
-import { connect } from '@tarojs/redux'
 import { WIFI_CHARACTERISTIC_ID, BLE_SERVICE_ID } from '@/common'
+import { showMyToast, getBLEState, getBLEData } from '@/common/utils'
 
 import './index.scss'
 export interface IDeviceItem {
@@ -25,7 +24,7 @@ export interface IDeviceItem {
 }
 
 export interface IBluetoothServerListItem {
-  deviceId: string
+  serviceId: string
   characteristics: Taro.getBLEDeviceCharacteristics.PromisedPropCharacteristics
 }
 
@@ -44,11 +43,9 @@ type PageOwnProps = {
 
 type PageState = {
   count: number
-  deviceId: string
   deviceCode: string
   showModal: boolean
   deviceList: IDeviceItem[]
-  bluetoothServerList: IBluetoothServerListItem[]
 }
 
 type IProps = PageStateProps & PageDispatchProps & PageOwnProps
@@ -71,15 +68,15 @@ interface MyDevice {
 )
 class MyDevice extends Component {
   protected page = 1
+  protected deviceId = ''
+  protected bluetoothServerList: IBluetoothServerListItem[] = []
   constructor(props) {
     super(props)
     this.state = {
       count: 0,
-      deviceId: '',
       deviceCode: '',
       deviceList: [],
-      showModal: false,
-      bluetoothServerList: []
+      showModal: false
     }
     this.scanCode = this.scanCode.bind(this)
     this.cancelModal = this.cancelModal.bind(this)
@@ -178,16 +175,14 @@ class MyDevice extends Component {
     await bluetooth.createBLEConnection({ deviceId })
     bluetooth.stopBluetoothDevicesDiscovery()
     showMyToast({ title: '蓝牙连接成功~' })
-    this.setState({ deviceId })
-    setTimeout(() => {
-      this.getWiFiList()
-    }, 0)
+    this.deviceId = deviceId
+    this.getWiFiList()
   }
 
   /** 获取蓝牙服务列表 */
   async getBLEDeviceServices() {
     Taro.showLoading({ title: '获取蓝牙参数...' })
-    const { deviceId } = this.state
+    const { deviceId } = this
     const { services } = await bluetooth.getBLEDeviceServices({ deviceId }) // 获取服务列表
     Taro.showLoading({ title: '获取特征值...' })
     const serveList: Array<Promise<Taro.getBLEDeviceCharacteristics.Promised>> = []
@@ -200,26 +195,63 @@ class MyDevice extends Component {
     }
 
     const serveListRes = await Promise.all(serveList)
-    const bluetoothServerList = serveListRes.map(i => i.characteristics)
+    serveListRes.forEach(({ characteristics }, index) => {
+      this.bluetoothServerList.push({
+        characteristics,
+        serviceId: services[index].uuid
+      })
+    })
     Taro.hideLoading()
-    this.setState({ bluetoothServerList })
-    setTimeout(() => {
-      this.getWiFiList()
-    }, 0)
   }
 
   async getWiFiList() {
     try {
-      const { deviceId } = this.state
+      const { deviceId } = this
+      // 开启通讯
       await bluetooth.notifyBLECharacteristicValueChange({
         deviceId,
         state: true,
         serviceId: BLE_SERVICE_ID,
         characteristicId: WIFI_CHARACTERISTIC_ID
       })
-      bluetooth.onBLECharacteristicValueChange(({ value }) => {
-        const str1 = ArrayBufferToString(value)
-        console.log({ str1 })
+
+      // 来自设备端的通知
+      bluetooth.onBLECharacteristicValueChange(async ({ value }) => {
+        const state = getBLEState(value) // 获取蓝牙状态
+        let advertisData = ''
+        let page = 0
+        // 判断第8位数是否是 1
+        if ((state & 0x80) !== 0) {
+          // 第8位数为 1, 设备端发送资源包
+
+          // 获取当前页
+          page = state & 0x3f
+
+          // 判断第8位数是否是 1
+          if ((state & 0x40) !== 0) {
+            // 新包
+            advertisData = getBLEData(value)
+          } else {
+            // 累加包
+            advertisData += getBLEData(value)
+          }
+          await bluetooth.writeBLECharacteristicValue({
+            deviceId,
+            serviceId: BLE_SERVICE_ID,
+            value: new Uint8Array([page]).buffer,
+            characteristicId: WIFI_CHARACTERISTIC_ID
+          })
+          // console.log({ page })
+          // console.log(page === 0)
+          // console.log({ advertisData })
+          if (page === 0) {
+            // 数据传输完毕
+            console.log(JSON.parse(advertisData))
+          }
+        } else {
+          // 第8位数为 0, 普通响应
+          console.log('第8位数为 0, 普通响应')
+        }
       })
     } catch (error) {
       console.error(error)

tslint.json

@@ -68,6 +68,7 @@
     "curly": false,
     "no-unused-expression": false,
     "no-string-literal": false,
-    "object-literal-key-quotes": false
+    "object-literal-key-quotes": false,
+    "no-bitwise": false
   }
 }