从.net发送和接收到串行设备" like;VT 100
本文关键字:quot VT like net | 更新日期: 2023-09-27 17:53:06
我有一个串行设备,用于接收和回复来自VT100型终端的命令。我可以使用任意数量的"终端模拟器"来操作这个设备。但是我想做的是从。net Windows应用程序发送一系列命令,并接收来自同一应用程序的回复,这样我就可以驱动一个对操作人员来说"非常简单"的GUI。我不想要的是另一个终端模拟器。似乎使用"System.IO.Serial。SerialPort"我可以打开连接,发送消息,分配一个委托来接收消息,实际接收消息……但是我发送的消息(命令)没有被解释为我期望的(当我用终端模拟器检查设备的状态时,状态与通过。net发送的命令不匹配),并且我收到的消息不是我可以破译的格式。
我认为我需要做的是正确编码命令并正确解码响应…但是我找不到任何文档清楚地解释如何做到这一点。
(我在c#中工作,但任何。net示例都会受到赞赏)
我正在工作的代码原型这是:
using System;
using System.IO.Ports;
using System.Text;
namespace busmanager
{
public class buslink
{
SerialPort _serialPort;
Boolean _echo;
Delegate _receiver;
//Defaut Ctor:
public buslink(Delegate Receiver)
{
String[] SerialPorts = System.IO.Ports.SerialPort.GetPortNames();
if (SerialPort.GetPortNames().Length > 0)
{
SetChannel(PortDefinitions.GetDefaults(SerialPort.GetPortNames()[0]), Receiver);
}
else
{
throw new Exception("Unable to connect to serial port");
}
}
//Custom Ctor: for externally defined PortDefinitions
public buslink(PortDefinitions PortDefinitions, Delegate Receiver)
{
SetChannel(PortDefinitions, Receiver);
}
private void SetChannel(PortDefinitions PortDefinitions, Delegate Receiver)
{
_serialPort = new SerialPort()
{
PortName = PortDefinitions.PortName,
//BaudRate = PortDefinitions.BaudRate,
Parity = PortDefinitions.Parity,
StopBits = PortDefinitions.StopBits,
DataBits = PortDefinitions.DataBits,
Handshake = PortDefinitions.Handshake,
ReadTimeout = PortDefinitions.ReadTimeout,
WriteTimeout = PortDefinitions.WriteTimeout,
NewLine = "'n",
Encoding = System.Text.Encoding.ASCII,
DtrEnable = true,
};
_echo = PortDefinitions.Echo;
_serialPort.DataReceived += new SerialDataReceivedEventHandler(_serialPort_DataReceived);
_serialPort.Open();
_receiver = Receiver;
}
void _serialPort_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
byte[] c = new byte[1000];
int x = _serialPort.Read(c,0,1000);
string d = c.ToString();
_receiver.DynamicInvoke(_serialPort.ReadExisting());
}
public string Send(string Cmd)
{
Cmd = Cmd.ToUpper();
byte[] sendBytes = Encoding.ASCII.GetBytes(Cmd);
try
{
if (ValidateCmd(Cmd))
{
_serialPort.WriteLine(Cmd);
if (_echo)
{
return "ECHO: " + Cmd;
}
}
}
catch (Exception ex)
{
throw ex;
}
return string.Empty;
}
private bool ValidateCmd(string Cmd)
{
return true;
}
public void Dispose()
{
_serialPort.Close();
_serialPort.Dispose();
}
}
public struct PortDefinitions
{
public string PortName { get; set; }
public int BaudRate { get; set; }
public Parity Parity { get; set; }
public StopBits StopBits { get; set; }
public int DataBits { get; set; }
public Handshake Handshake { get; set; }
public int ReadTimeout { get; set; }
public int WriteTimeout { get; set; }
public bool Echo { get; set; }
public static PortDefinitions GetDefaults(string PortName)
{
return new PortDefinitions()
{
PortName = PortName.ToUpper(),
BaudRate = 9600,
Parity = Parity.None,
StopBits = StopBits.One,
DataBits = 8,
Handshake = Handshake.None,
ReadTimeout = 1000,
WriteTimeout = 1000,
Echo = true
};
}
}
}
该设备是专有的,但它接受的命令是:
InX
OutY
(其中X和Y是设备上的端口,并创建连接In和Out端口之间)Status All
(显示所有状态输入
您的换行定义设置错误。你有NewLine = "/N"
,但你几乎肯定需要它是"'r'n"
或"'n"
。