SerialPort端口通信

最新推荐文章于 2023-07-20 16:24:13 发布

转载最新推荐文章于 2023-07-20 16:24:13 发布 · 156 阅读

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本文介绍了一种通过C#实现串口通信的方法，包括获取可用串口名称、打开串口、发送及接收数据的过程。文中提供了具体的代码实现，如读取注册表获取串口名、设置串口参数并打开串口、定义数据发送格式以及使用委托处理接收的数据。

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遍历机器上的SerialPort

 1:  public static List<string> funList_SerialPortName()

 2:  {

 3:      List<string> lst = new List<string>();

 4:      RegistryKey keyCom = Registry.LocalMachine.OpenSubKey("Hardware\\DeviceMap\\SerialComm");

 5:      if (keyCom != null)

 6:      {

 7:          string[] sSubKeys = keyCom.GetValueNames();

 8:          foreach (string sName in sSubKeys)

 9:          {

10:              string sValue = (string)keyCom.GetValue(sName);

11:              lst.Add(sValue);

12:          }

13:      }

14:      return lst;

15:  }

打开一个端口

 1:  public static void subAlarm_Open(ref System.IO.Ports.SerialPort sp)

 2:  {

 3:      if (sp.IsOpen)

 4:      {

 5:          sp.Close();

 6:      }

 7:      string strSQL = "select AlarmPort,AlarmRate from Basic_PortInfo";

 8:      DataSet ds = new DataSet();

 9:      ds = IdioSoft.ClassDbAccess.ClassDbAccess.funDataset_SQLExecuteNonQuery(strSQL);

10:      sp.PortName = ds.Tables[0].Rows[0]["AlarmPort"].ToString();

11:      sp.BaudRate = ds.Tables[0].Rows[0]["AlarmRate"].ToString().funInt_StringToInt(0);

12:      //停止位等信息也是在这个地方初使化

13:      try

14:      {

15:          sp.Open();

16:      }

17:      catch

18:      {

19:      }

20:  }

发送指令

1:  //发送防区指令

2:  byte[] data = ClassCommand.funString_SubLineZone(CurrentSubLineIndex - 1, intFQ, strStatus);//返回一个byte[]

3:  spAlarm.Write(data, 0, data.Length);

接收指令,这个需要用用委托来实现

1:  delegate void delgSpReceived();

2:  delgSpReceived objdelgSpReceived;

3:  objdelgSpReceived = new delgSpReceived(subSpAlarm_Received);

委托过程

1:  private void subSpAlarm_Received()

2:  {

3:      //操作代码

4:  }

转载于:https://www.cnblogs.com/trueideal/archive/2010/02/28/1675060.html