391 lines
13 KiB
JavaScript
391 lines
13 KiB
JavaScript
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// 接收数据
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// 压差站号：01，温湿度站号：02，门控制站号：03
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// 压差 01 03 02 12 34 B5 33
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// 温湿度 01 03 04 02 98 00 BC 7B D5
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// IC卡 20 01 00 08 04 00 00 00 0e 26 fe ab 8f 03
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// ID卡 20 01 00 05 49 00 b5 6a b5 d8 03
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// 卡离开 20 01 00 01 02 fd 03
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// 门控制指令(中盛4路数字IO模块,功能码06):
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// 左门开门: 03 06 00 00 00 01 49 E8
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// 左门关门: 03 06 00 00 00 00 88 28
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// 右门开门: 03 06 00 01 00 01 18 28
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// 右门关门: 03 06 00 01 00 00 D9 E8
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// 卡片放入和离开 起始位20, 所有卡片通过同一通道读取,通过数据库比对判断类型
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// let RS232 = getApp().globalData.RS232
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import store from '@/store/index.js'
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// ========== RS485 优先级消息队列 START ==========
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const PRIORITY = {
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HIGH: 0, // 用户操作（开门/关门/控制指令）
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LOW: 1, // 定时轮询（getTemp/getPressure）
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}
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const rs485Queue = []
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let isRS485Sending = false
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const RS485_SEND_DELAY = 200 // 每条指令间隔200ms，确保总线空闲
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const MAX_QUEUE_SIZE = 3 // 队列最大长度
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/**
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* 将任务按优先级插入队列
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* 规则：
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* 1. 队列最大长度为3
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* 2. 重复指令（相同cmd）不入队，直接丢弃
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* 3. 队列满时，高优先级任务挤掉低优先级任务，否则踢掉最老的（队首）
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*/
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const enqueueTask = (task) => {
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// 规则1: 去重 - 已存在相同cmd的任务则丢弃
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const isDuplicate = rs485Queue.some(t => t.cmd === task.cmd)
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if (isDuplicate) {
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// console.warn('[RS485队列] 丢弃重复任务:', task.cmd)
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return false
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}
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// 规则2: 队列满了，先腾位置
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if (rs485Queue.length >= MAX_QUEUE_SIZE) {
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if (task.priority === PRIORITY.HIGH) {
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// 高优先级：优先挤掉队列中最后一个低优先级任务
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let lastLowIndex = -1
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for (let i = rs485Queue.length - 1; i >= 0; i--) {
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if (rs485Queue[i].priority === PRIORITY.LOW) {
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lastLowIndex = i
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break
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}
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}
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if (lastLowIndex !== -1) {
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// console.warn('[RS485队列] 高优挤掉低优:', rs485Queue[lastLowIndex].cmd)
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rs485Queue.splice(lastLowIndex, 1)
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} else {
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// 没有低优先级可挤，踢掉队首最老的
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// console.warn('[RS485队列] 满,踢掉队首:', rs485Queue[0].cmd)
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rs485Queue.shift()
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}
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} else {
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// 低优先级：直接踢掉队首最老的
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// console.warn('[RS485队列] 满,踢掉队首:', rs485Queue[0].cmd)
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rs485Queue.shift()
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}
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}
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// 规则3: 按优先级插入
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if (task.priority === PRIORITY.HIGH) {
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let insertIndex = rs485Queue.findIndex(t => t.priority === PRIORITY.LOW)
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if (insertIndex === -1) {
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rs485Queue.push(task)
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} else {
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rs485Queue.splice(insertIndex, 0, task)
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}
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} else {
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rs485Queue.push(task)
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}
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// console.log(`[RS485队列] 入队成功, 长度:${rs485Queue.length}, cmd:${task.cmd}`)
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return true
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}
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// ========== RS485 发送超时保护 ==========
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const RS485_SEND_TIMEOUT = 2000 // 发送超时2秒
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/**
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* 带超时的RS485发送封装
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* 防止底层串口驱动卡死导致Promise永久pending，造成队列死锁
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*/
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const sendWithTimeout = (rs485Instance, cmd) => {
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return new Promise((resolve, reject) => {
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const timer = setTimeout(() => {
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console.warn(`[RS485] 发送超时(${RS485_SEND_TIMEOUT}ms), cmd: ${cmd}`)
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reject(new Error('RS485发送超时'))
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}, RS485_SEND_TIMEOUT)
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const result = rs485Instance.sendDataString(cmd)
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if (result && typeof result.then === 'function') {
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result.then(res => {
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clearTimeout(timer)
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resolve(res)
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}).catch(err => {
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clearTimeout(timer)
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reject(err)
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})
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} else {
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clearTimeout(timer)
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resolve(result)
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}
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})
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}
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// ========== RS485 发送超时保护 END ==========
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const processRS485Queue = async () => {
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if (isRS485Sending || rs485Queue.length === 0) {
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return
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}
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isRS485Sending = true
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const task = rs485Queue.shift()
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try {
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let RS485 = getApp().globalData.RS485
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if (!RS485) {
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throw new Error('RS485 not initialized')
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}
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// 使用带超时的发送封装，防止Promise永久pending导致队列死锁
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await sendWithTimeout(RS485, task.cmd)
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// 发送后延迟，确保总线空闲再发下一条
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await new Promise(r => setTimeout(r, RS485_SEND_DELAY))
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task.resolve()
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} catch (error) {
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console.error('RS485 send error:', error)
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task.reject(error)
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} finally {
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isRS485Sending = false
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processRS485Queue()
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}
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}
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/**
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* 发送RS485指令（带优先级）
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* @param {string} cmd - 十六进制指令字符串
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* @param {number} priority - 优先级，默认HIGH
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* @returns {Promise}
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*/
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const enqueueRS485Send = (cmd, priority = PRIORITY.HIGH) => {
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return new Promise((resolve, reject) => {
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enqueueTask({ cmd, priority, resolve, reject })
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processRS485Queue()
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})
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}
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/**
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* 清空队列（重连时调用，拒绝所有待发送请求）
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*/
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const clearRS485Queue = () => {
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while (rs485Queue.length > 0) {
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const task = rs485Queue.shift()
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task.reject(new Error('RS485队列已清空（重连中）'))
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}
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isRS485Sending = false // 强制释放发送锁，防止队列死锁
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}
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/**
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* 获取当前队列长度（调试用）
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*/
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const getRS485QueueSize = () => {
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return rs485Queue.length
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}
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// ========== RS485 优先级消息队列 END ==========
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export default {
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// 开左门指令 (通过RS485站号03) - 高优先级
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// 中盛4路数字IO模块,功能码06(写单个保持寄存器)
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LeftDoor: async (status) => {
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// 左门开门: 03 06 00 00 00 01 49 E8
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// 左门关门: 03 06 00 00 00 00 88 28
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let cmd = status ? '03060000000149E8' : '0306000000008828'
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store.state.relay.leftDoor = status
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// door状态 = leftDoor OR rightDoor (任一门打开则door为true)
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store.state.relay.door = store.state.relay.leftDoor || store.state.relay.rightDoor
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await enqueueRS485Send(cmd, PRIORITY.HIGH)
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},
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// 开右门指令 (通过RS485站号03) - 高优先级
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// 中盛4路数字IO模块,功能码06(写单个保持寄存器)
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RightDoor: async (status) => {
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// 右门开门: 03 06 00 01 00 01 18 28
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// 右门关门: 03 06 00 01 00 00 D9 E8
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let cmd = status ? '0306000100011828' : '030600010000D9E8'
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store.state.relay.rightDoor = status
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// door状态 = leftDoor OR rightDoor (任一门打开则door为true)
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store.state.relay.door = store.state.relay.leftDoor || store.state.relay.rightDoor
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await enqueueRS485Send(cmd, PRIORITY.HIGH)
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},
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// 开门关门控制 01
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// Door: async (status) => {
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// let op = status ? '01' : '00'
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// let cmd = '5AA5EE01' + op
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// store.state.relay.door = status
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// let RS232 = getApp().globalData.RS232
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// await RS232.sendDataString(cmd);
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// },
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// 开风机指令 02
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Wind: async (status) => {
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let op = status ? '01' : '00'
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let cmd = '5AA5EE02' + op
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store.state.relay.wind = status
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let RS232 = getApp().globalData.RS232
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await RS232.sendDataString(cmd);
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},
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// 开灯指令 03
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Light: async (status) => {
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let op = status ? '01' : '00'
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let cmd = '5AA5EE03' + op
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store.state.relay.light = status
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let RS232 = getApp().globalData.RS232
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await RS232.sendDataString(cmd);
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},
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// 开真空指令 04
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Vacuum: async (status) => {
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let op = status ? '01' : '00'
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let cmd = '5AA5EE04' + op
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store.state.relay.vacuum = status
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let RS232 = getApp().globalData.RS232
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await RS232.sendDataString(cmd);
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},
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// 开关消毒指令 05
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Disinfect: async (status) => {
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let op = status ? '01' : '00'
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let cmd = '5AA5EE05' + op
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store.state.relay.disinfect = status
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let RS232 = getApp().globalData.RS232
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await RS232.sendDataString(cmd);
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},
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// 获取温湿度（通过RS485站号02）- 低优先级
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getTemp: () => {
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let cmd = '020300000002C438';
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return enqueueRS485Send(cmd, PRIORITY.LOW)
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},
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// 获取压差指令（通过RS485站号01）- 低优先级
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getPressure: () => {
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let cmd = '01030001000295CB'
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return enqueueRS485Send(cmd, PRIORITY.LOW)
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},
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// 导出队列管理方法
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clearRS485Queue,
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getRS485QueueSize,
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// 重置RS485队列锁（供外部重连时调用）
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resetRS485Lock() {
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clearRS485Queue() // 内部已包含清队列 + 释放锁
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},
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// 解析门卡数据，返回卡号
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parse232dData: (hexString) => {
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// IC卡 20 01 00 08 04 00 00 00 0e 26 fe ab 8f 03
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// ID卡 20 01 00 05 49 00 b5 6a b5 d8 03
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// 卡离开 20 01 00 01 02 fd 03
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// 01 地址， 04 00 卡类型，0e 26 fe ab 卡号，8f 校验 03固定值
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// 人员卡地址号0，卡号4个字节，倒数4个字节，倒数一位03固定值，倒数二位校验
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// 内镜卡地址号1-16，卡号4个字节，倒数4个字节，倒数一位03固定值，倒数二位校验
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// 卡离开8位，卡进入11位和14位
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// 移除空格和换行符
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const hexStr = hexString.replace(/\s+/g, '');
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// 验证输入
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if (hexStr.length === 0) {
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throw new Error('请输入Modbus十六进制数据');
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}
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if (hexStr.length % 2 !== 0) {
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throw new Error('请输入有效的Modbus十六进制数据');
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}
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// 解析后的数据对象
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let data = {};
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// 刷卡数据 起始字节20，第二字节站号，结束字节03
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if (hexStr.substr(0, 2) == '20' && hexStr.substr(hexStr.length - 2, 2) == '03') {
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// 卡数据
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let hexNum = hexStr.substr(hexStr.length - 12, 8)
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// 第二位是地址
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let addHex = hexStr.substr(2, 2)
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// 转换成10进制地址号
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let address = parseInt(addHex, 16)
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// 解析后的数据 { address: 0, number: 12345678, cardType: 'ic', action: 'enter', type: 'person' }
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data.address = address
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if (hexStr.length == 28) {
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// 14字节是IC卡号
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let icNo = parseInt(hexNum, 16)
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data.number = icNo
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data.cardType = 'ic'
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data.action = 'enter'
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}
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if (hexStr.length == 22) {
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// 11字节是ID卡号
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let idNo = parseInt(hexNum, 16)
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data.number = idNo
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data.cardType = 'id'
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data.action = 'enter'
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}
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if (hexStr.length == 14) {
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// 7字节是卡离开
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data.action = 'leave'
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}
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if (address == 0) {
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// 人员卡
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data.type = 'person'
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}
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if (address >= 1 && address <= 16) {
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// 内镜卡
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data.type = 'internal'
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}
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}
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// 关门上报指令
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// if (hexStr.toUpperCase() == '5AA50000000000FF') {
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// // 开门数据 8个字节
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// data.action = 'door'
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// }
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return data
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},
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parse485Data: (hexString) => {
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// 移除空格和换行符
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const hexStr = hexString.replace(/\s+/g, '');
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// 压差站号：01，温湿度站号：02
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let addHex = hexStr.substr(0, 2)
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let data = {}
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if (hexStr.length == 14 || hexStr.length == 18) {
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if (addHex == '01') {
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let pressure = parseInt(hexStr.substr(6, 4), 16);
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data.pressure = pressure / 10
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}
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if (addHex == '02') {
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let humi = parseInt(hexStr.substr(6, 4), 16);
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let temp = parseInt(hexStr.substr(10, 4), 16);
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// 温湿度上报数据异常处理，取正常温湿度范围内数据
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temp = (temp / 10).toFixed(1)
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if (temp >= 0 && temp < 100) {
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data.temp = temp
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}
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humi = (humi / 10).toFixed(1)
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if (humi >= 0 && humi < 100) {
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data.humi = humi
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}
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}
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if (addHex == '03') {
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// 中盛4路数字IO控制器, 站号：03
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// 左门开门: 03 06 00 01 00 01 18 28
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// 左门关门: 03 06 00 01 00 00 D9 E8
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// 03040200010130
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// 右门开门: 03 06 00 00 00 01 49 E8
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// 右门关门: 03 06 00 00 00 00 88 28
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// 03040200024131
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// 关门状态上报(功能码04,读输入寄存器):
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// DI状态变化上报,解析左右门触点触发
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let funcHex = hexStr.substr(8, 2);
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if (funcHex == '01') {
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// 左门关
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data.action = 'LeftDoor'
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data.status = 'closed'
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}
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if (funcHex == '02') {
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// 右门关
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data.action = 'RightDoor'
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data.status = 'closed'
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}
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if (funcHex == '03') {
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// 2个门关
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data.action = 'door'
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data.status = 'closed'
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}
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// console.log('parse485Data:',hexStr, data)
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}
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}
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return data
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},
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} |