我目前正在使用一种名为 Fluke 5500A 多产品校准设备的设备。我用 C# 编写了一个小程序来与之交互并了解更多关于它的工作原理，但不幸的是 SerialPort.DataReceived 给了我一些非常奇怪的结果。该程序不长，因此我将在此处将其全部发布：
class Program
{
static public bool isExecuting = true;
static private string serialCommand;
static private string dataReceived;
static void Main(string[] args)
{
SerialPortConnection serialPort = new SerialPortConnection();
serialPort.OpenSerialConnection();
while (isExecuting == true)
{
Console.WriteLine("Enter a command or type q to quit.");
serialCommand = Console.ReadLine().ToUpper();
if (serialCommand == "Q")
isExecuting = false;
else if (serialCommand == "CLEAR")
Console.Clear();
else
{
dataReceived = serialPort.WriteSerialConnection(serialCommand);
Console.WriteLine(dataReceived);
}
}
serialPort.CloseSerialConnection();
}
}
}
还有我的 SerialPortConnection 类：
public class SerialPortConnection
{
private SerialPort serialPort;
private string dataReceived = "none";
public SerialPortConnection(string comPort = "Com3", int baud = 9600, System.IO.Ports.Parity parity = System.IO.Ports.Parity.None, int dataBits = 8, System.IO.Ports.StopBits stopBits = System.IO.Ports.StopBits.One)
{
serialPort = new SerialPort(comPort, baud, parity, dataBits, stopBits);
}
public void OpenSerialConnection()
{
try
{
serialPort.Open();
}
catch (Exception e)
{
Console.Write("\nError");
Console.Write(e);
}
}
public string WriteSerialConnection(string SerialCommand)
{
try
{
serialPort.Write(String.Format(SerialCommand + "\r"));
dataReceived = serialPort.ReadExisting();
return dataReceived;
}
catch (Exception e)
{
Console.Write("\nError");
Console.Write(e);
return "Execution Unsuccessful";
}
}
public void CloseSerialConnection()
{
try
{
serialPort.Close();
}
catch (Exception e)
{
Console.Write("\nError");
Console.Write(e);
}
}
}
我目前的问题是控制台的输出看起来像这样：
Enter a command or type q to quit.
*IDN?
Enter a command or type q to quit.
OUT 50V <-- Command input
*IDN? <-- Previous command echoed back
FLUKE,5500A,8030005,2.61+1.3+2.0+* <-- Data received from previous command
161>
Enter a command or type q to quit.
OPER
OUT 50V
162>
Enter a command or type q to quit.
STBY
OPER
163>
Enter a command or type q to quit.
*RST
STBY
164>
Enter a command or type q to quit.
这些命令执行得很好，但控制台的输出似乎是最后一个执行的命令以及该命令返回的任何数据。我不知道为什么会这样。
编辑：
感谢 Robert P 的回答，我实现了以下代码：
var received = "";
bool isReading = true;
while (isReading == true)
{
try
{
received += serialPort.ReadExisting();
if (received.Contains('>'))
isReading = false;
}
catch (Exception e)
{
}
}
Console.WriteLine(received);