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60 lines
1.6 KiB
60 lines
1.6 KiB
import BLEHandler from "./bleHandler"
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class BLE extends BLEHandler {
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constructor(blename, emitter) {
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super(blename, emitter)
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}
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listen(callback) {
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// 蓝牙事件注册,打开channel
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this.emitter.removeAllListeners("channel")
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this.emitter.on("channel", callback)
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}
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removeListen() {
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// 移除所有蓝牙事件
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this.emitter.removeAllListeners("channel")
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}
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async init() {
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let flow = false
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// 打开蓝牙适配器状态监听
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this.onBLEConnectionStateChange()
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// 蓝牙适配器初始化
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await this.openAdapter()
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// 搜索蓝牙设备
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await this.startSearch()
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// 获取设备ID
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flow = await this.onBluetoothFound()
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if (!flow) return
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// 停止搜索设备
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await this.stopSearchBluetooth()
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// 连接蓝牙
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await this.connectBlue();
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//安卓手机需要设置MTU Size
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await this.setBLEMTU();
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// 获取serviceId
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await this.getBLEServices()
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// 设置特征值
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await this.getCharacteristics();
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// 订阅特征值
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await this.notifyBLECharacteristicValueChange()
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// 打开传输监听，等待设备反馈数据
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this.onBLECharacteristicValueChange()
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}
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// 发送指令
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async send(cmd, payload,timestamp,callback) {
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let flow = await this.sentOrder(cmd, payload,timestamp,callback)
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return flow
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}
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async close() {
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await this.closeBLEConnection()
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await this.closeBLEAdapter()
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}
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}
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export { BLE };
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