上位机与通信组件（二）

1、串口对象接收回调事件

1 serialPort.DataReceived += SerialPort_DataReceived; // 数据接收
2 
3 void SerialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
4 {
5     SerialPort serialPort1 = (sender as SerialPort);
6     byte[] buffer = new byte[serialPort1.BytesToRead];
7    (sender as SerialPort).Read(buffer, 0, serialPort1.BytesToRead);
8 }
View Code

2、串口断线重连

（1）接口断接

 1         private void Reconnect()
 2         {
 3             SerialPort serialPort = new SerialPort();
 4             serialPort = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);
 5             serialPort.Open();
 6 
 7             while (true)
 8             {
 9                 if (serialPort.IsOpen)
10                 {
11                     Console.WriteLine("已连接");
12                 }
13                 else
14                 {                    
15                     try
16                     {
17                         Console.WriteLine("串口断开，正在重新连接");
18                         serialPort.Open();
19                         break;
20                     }
21                     catch(Exception ex) 
22                     {
23                         Console.WriteLine(ex.Message);
24                     }
25                 }
26             }
27         }
View Code

（2）链路断接，需要设备双方处理，发心跳

 

posted @ 2023-07-06 15:21  逆风起降  阅读(5)  评论(0)  编辑  收藏  举报