用于发送到串行端口的powershell cmdlet

如何解决用于发送到串行端口的powershell cmdlet

我正在尝试创建一个powershell cmdlet，该cmdlet将使用字符串作为输入参数将十六进制字符串发送到COM端口。 我在COM上有一个小型uC，它基于输入的十六进制字符串控制2个继电器。 我对Powershell完全陌生，所以...

从cmdline Powershell中

手动输入命令，但是它可以工作。 这是我想出的：

using System.Management.Automation;  // Windows PowerShell assembly.
using System.IO.Ports.SerialPort;

namespace ControlPort
{
  // Declare the class as a cmdlet and specify the
  // appropriate verb and noun for the cmdlet name.
  [Cmdlet(VerbsCommunications.Send,"ControlCOM11",SupportsTransactions=true)]
  
  public class SendControlCommand : Cmdlet
  {
    $port= new-Object System.IO.Ports.SerialPort COM11,9600,None,8,one;
    $port.open();
    
    // Declare the parameters for the cmdlet.
    [Parameter(Mandatory=true)]
    public string command
    {
      get { return command; }
      set { command = value; }
    }
    private string command;

    // Override the ProcessRecord method to process
    // the supplied user name and write out a
    // greeting to the user by calling the WriteObject
    // method.    
    
    protected override void ProcessRecord(command)
    {
        if (TransactionAvailable())
        {
            using (CurrentPSTransaction)
            {
                if(command == "RELAY2ON")
                  {
                    const [Byte[]] $relay2on = 0x52,0x45,0x4C,0x41,0x59,0x32,0x4F,0x4E,0x3B;
                    $port.Write($relay2on,$relay2on.Count);
                  }
      
                if(command == "RELAY2OFF")
                  {
                    const [Byte[]] $relay2off = 0x52,0x46,0x3B;
                    $port.Write($relay2off,$relay2off.Count);
                  }
            
            }   
        
        }       
      
    }
  }
}

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非常感谢您的帮助。