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serial_port.cs
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serial_port.cs
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//////////////////////////////////////////////////////////////////////
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO.Ports;
//////////////////////////////////////////////////////////////////////
namespace KP184
{
//////////////////////////////////////////////////////////////////////
public class serial_port
{
//////////////////////////////////////////////////////////////////////
public SerialPort port = new SerialPort();
//////////////////////////////////////////////////////////////////////
public void open()
{
if(!port.IsOpen)
{
bool open_it = true;
if(string.IsNullOrEmpty(port.PortName))
{
Log.Error($"No com port set");
open_it = false;
}
if(port.BaudRate == 0)
{
Log.Error($"Baud rate not set");
open_it = false;
}
if(open_it)
{
port.DataBits = 8;
port.Parity = Parity.None;
port.StopBits = StopBits.One;
port.ReadTimeout = 1000;
port.WriteTimeout = 1000;
try
{
Log.Verbose($"Opening serial port '{port.PortName}' at {port.BaudRate} baud");
port.Open();
}
catch(System.IO.IOException e)
{
Log.Error($"Error opening {port.PortName}");
throw;
}
}
}
}
//////////////////////////////////////////////////////////////////////
public void flush()
{
Log.Debug("Flush com port");
port.DiscardInBuffer();
port.DiscardOutBuffer();
}
//////////////////////////////////////////////////////////////////////
public void close()
{
if(port.IsOpen)
{
Log.Debug($"Closing {port.PortName}");
port.Close();
}
}
//////////////////////////////////////////////////////////////////////
public void write(byte[] message, int len)
{
open();
try
{
port.Write(message, 0, len);
}
catch(System.IO.IOException e)
{
Log.Error($"Error writing to {port.PortName}");
throw;
}
catch(InvalidOperationException e)
{
Log.Error($"Error writing to {port.PortName}");
throw;
}
catch(TimeoutException e)
{
Log.Error($"Timeout reading from {port.PortName}");
}
}
//////////////////////////////////////////////////////////////////////
public void read(byte[] buffer, int len)
{
open();
try
{
port.Read(buffer, 0, len);
}
catch(System.IO.IOException e)
{
Log.Error($"Error reading from {port.PortName}");
throw;
}
catch(InvalidOperationException e)
{
Log.Error($"Error reading from {port.PortName}");
throw;
}
catch(TimeoutException e)
{
Log.Error($"Timeout reading from {port.PortName}");
}
}
}
}