837cb8865f
新增 lib/bt-monitor.js： - 每 3 秒轮询 bluetoothctl show + hcitool con - connected（ACL 连接存在）→ 常亮 - scanning/connecting（Discovering: yes）→ 闪烁 - 无 adapter / Powered: no / 静止 → 熄灭 client.js：启动时开启 BtMonitor，stop() 时清理 provisioning.js：移除所有 led.bt 调用，BT 灯统一由 BtMonitor 管理 Made-with: Cursor
108 lines
2.8 KiB
JavaScript
108 lines
2.8 KiB
JavaScript
'use strict';
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const { execSync } = require('child_process');
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const fs = require('fs');
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const log = require('./logger');
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const led = require('./led');
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const POLL_INTERVAL_MS = 3000;
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function findBin(name, candidates) {
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for (const p of candidates) {
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try { fs.accessSync(p); return p; } catch (_) {}
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}
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return name; // fallback: rely on PATH
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}
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/**
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* 监控蓝牙状态，驱动 BT 指示灯（b6）。
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*
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* 状态优先级：
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* connected → 常亮 (hcitool con 检测到 ACL 连接)
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* scanning → 闪烁 (bluetoothctl show: Discovering: yes)
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* connecting → 闪烁 (bluetoothctl devices: 有 Connecting 状态)
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* off → 熄灭 (adapter 不存在 / Powered: no / 静止)
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*/
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class BtMonitor {
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constructor() {
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this._timer = null;
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this._btctl = findBin('bluetoothctl', [
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'/usr/bin/bluetoothctl', '/bin/bluetoothctl',
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]);
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this._hcitool = findBin('hcitool', [
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'/usr/bin/hcitool', '/usr/sbin/hcitool', '/bin/hcitool',
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]);
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}
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start() {
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this._poll();
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this._timer = setInterval(() => this._poll(), POLL_INTERVAL_MS);
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log.info('bt', 'BT 状态监控已启动');
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}
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stop() {
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if (this._timer) {
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clearInterval(this._timer);
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this._timer = null;
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}
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led.bt.off();
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log.info('bt', 'BT 状态监控已停止');
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}
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// ── 内部 ──────────────────────────────────────────────────────────────────
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_poll() {
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try {
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const state = this._getBtState();
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if (state === 'connected') {
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led.bt.on();
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} else if (state === 'scanning' || state === 'connecting') {
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led.bt.blink();
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} else {
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led.bt.off();
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}
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} catch (e) {
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log.warn('bt', `状态检测异常: ${e.message}`);
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led.bt.off();
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}
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}
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_exec(cmd, timeout = 3000) {
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return execSync(cmd, {
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timeout,
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stdio: ['ignore', 'pipe', 'ignore'],
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encoding: 'utf8',
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});
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}
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_getBtState() {
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// 1. 检查 adapter 是否存在且已开启
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let show;
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try {
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show = this._exec(`${this._btctl} show`);
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} catch (_) {
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return 'off'; // bluetoothctl 不可用 或 无 adapter
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}
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if (!show.includes('Powered: yes')) return 'off';
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// 2. 检查是否有已连接的 ACL 设备（A2DP 连接）
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try {
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const con = this._exec(`${this._hcitool} con`);
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if (/ACL\s+[0-9A-Fa-f:]{17}/i.test(con)) return 'connected';
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} catch (_) {}
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// 3. 部分版本支持 bluetoothctl devices Connected
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try {
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const devs = this._exec(`${this._btctl} devices Connected`);
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if (devs.trim()) return 'connected';
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} catch (_) {}
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// 4. 检查是否正在扫描
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if (show.includes('Discovering: yes')) return 'scanning';
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return 'off';
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}
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}
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module.exports = { BtMonitor };
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