VueUse useBluetooth Vue 蓝牙相关的函数

VueUse useBluetooth  响应式Web蓝牙API。提供与低功耗蓝牙外设连接和交互的能力。 Web蓝牙API允许网站使用通用属性配置文件(GATT)通过蓝牙4无线标准发现并与设备通信。
注:它目前在Android M, Chrome OS, Mac和Windows 10中部分实现。有关浏览器兼容性的完整概述，请参阅Web蓝牙API浏览器兼容性 注意:关于web蓝牙API规范，需要注意一些注意事项。请参阅Web蓝牙W3C草案报告，了解有关设备检测和连接的许多警告。
注:此API在Web Workers中不可用(未通过WorkerNavigator暴露)。

代码示例

import { useBluetooth } from '@vueuse/core'

const {
  isSupported,//是否支持蓝牙
  isConnected,//是否连接
  device,//蓝牙设备
  requestDevice,//请求连接蓝牙
  server, //蓝牙相关的服务接口
} = useBluetooth({
  acceptAllDevices: true,
})

请求连接蓝牙

<template>
  <button @click="requestDevice()">
    Request Bluetooth Device
  </button>
</template>

举一个获取电池电量的例子

import { pausableWatch, useBluetooth } from '@vueuse/core'

const {
  isSupported,
  isConnected,
  device,
  requestDevice,
  server,
} = useBluetooth({
  acceptAllDevices: true,
  optionalServices: [
    'battery_service',
  ],
})


const batteryPercent = ref<undefined | number>()
const isGettingBatteryLevels = ref(false)

async function getBatteryLevels() {
  isGettingBatteryLevels.value = true

  // Get the battery service:
  const batteryService = await server.getPrimaryService('battery_service')

  // Get the current battery level
  const batteryLevelCharacteristic = await batteryService.getCharacteristic(
    'battery_level',
  )

  // Listen to when characteristic value changes on `characteristicvaluechanged` event:
  batteryLevelCharacteristic.addEventListener('characteristicvaluechanged', (event) => {
    batteryPercent.value = event.target.value.getUint8(0)
  })

  // Convert received buffer to number:
  const batteryLevel = await batteryLevelCharacteristic.readValue()

  batteryPercent.value = await batteryLevel.getUint8(0)
}

const { stop } = pausableWatch(isConnected, (newIsConnected) => {
  if (!newIsConnected || !server.value || isGettingBatteryLevels.value)
    return
  // Attempt to get the battery levels of the device:
  getBatteryLevels()
  // We only want to run this on the initial connection, as we will use an event listener to handle updates:
  stop()
})

蓝牙相关的函数和方法太多了，请访问Chrome 官方文档 https://googlechrome.github.io/samples/web-bluetooth/battery-level.html