0602

utils/cmd.js

@@ -172,6 +172,34 @@ const getRS485QueueSize = () => {
 }
 // ========== RS485 优先级消息队列 END ==========
 
+// ========== RS232 超时保护 START ==========
+// RS232波特率115200极快(~1ms/条)，无需队列，仅需超时保护防止Promise永久pending
+
+const RS232_SEND_TIMEOUT = 1000  // 发送超时1秒（对115200绰绰有余）
+
+/**
+ * 带超时的RS232发送封装
+ * 防止底层串口驱动卡死导致Promise永久pending
+ */
+const sendRS232WithTimeout = (rs232Instance, cmd) => {
+    return new Promise((resolve, reject) => {
+        const timer = setTimeout(() => {
+            console.warn(`[RS232] 发送超时(${RS232_SEND_TIMEOUT}ms), cmd: ${cmd}`)
+            reject(new Error('RS232发送超时'))
+        }, RS232_SEND_TIMEOUT)
+
+        const result = rs232Instance.sendDataString(cmd)
+        if (result && typeof result.then === 'function') {
+            result.then(res => { clearTimeout(timer); resolve(res) })
+                  .catch(err => { clearTimeout(timer); reject(err) })
+        } else {
+            clearTimeout(timer)
+            resolve(result)
+        }
+    })
+}
+// ========== RS232 超时保护 END ==========
+
 export default {
     // 开左门指令 (通过RS485站号03) - 高优先级
     // 中盛4路数字IO模块,功能码06(写单个保持寄存器)
@@ -211,7 +239,7 @@ export default {
         let cmd = '5AA5EE02' + op
         store.state.relay.wind = status
         let RS232 = getApp().globalData.RS232
-        await RS232.sendDataString(cmd);
+        await sendRS232WithTimeout(RS232, cmd)
     },
     // 开灯指令 03
     Light: async (status) => { 
@@ -219,7 +247,7 @@ export default {
         let cmd = '5AA5EE03' + op
         store.state.relay.light = status
         let RS232 = getApp().globalData.RS232
-        await RS232.sendDataString(cmd);
+        await sendRS232WithTimeout(RS232, cmd)
     },
     // 开真空指令 04
     Vacuum: async (status) => { 
@@ -227,7 +255,7 @@ export default {
         let cmd = '5AA5EE04' + op
         store.state.relay.vacuum = status
         let RS232 = getApp().globalData.RS232
-        await RS232.sendDataString(cmd);
+        await sendRS232WithTimeout(RS232, cmd)
     },
     // 开关消毒指令 05
     Disinfect: async (status) => {
@@ -235,7 +263,7 @@ export default {
         let cmd = '5AA5EE05' + op
         store.state.relay.disinfect = status
         let RS232 = getApp().globalData.RS232
-        await RS232.sendDataString(cmd);
+        await sendRS232WithTimeout(RS232, cmd)
     },
     // 获取温湿度（通过RS485站号02）- 低优先级
     getTemp: () => {