我有一个串行设备,用于接收和回复来自VT100类型终端的命令。我可以使用任意数量的终端模拟器'操作此设备。但我想要做的是从.NET Windows应用程序发送一系列命令并接收回复相同的应用程序,以便我可以驱动一个简单的GUI。对于运营商。我不想要的是另一个终端仿真器。似乎使用" System.IO.Serial.SerialPort"我可以打开一个连接,发送一条消息,分配一个代表来接收一条消息,实际收到一条消息......但是我发送的消息(一个命令)没有被解释为我所期望的(当我检查设备的状态时)使用终端仿真器,状态与通过.Net发送的命令不匹配,我收到的消息不是我可以解密的格式。
我认为我需要做的是正确编码命令并正确解码响应...但我找不到明确说明如何执行此操作的文档。
(我在C#工作,但任何.Net示例都会受到赞赏)
我正在使用的代码原型是:
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 在入口和出口之间)Status All
(显示所有的状态 输入
答案 0 :(得分:2)
您的换行符定义设置错误。您有NewLine = "/N"
,但几乎可以肯定需要"\r\n"
或"\n"
。