baseterm.cs

C#串口编程。详细讲解

using System;
using System.Windows.Forms;
using System.IO;
using JH.CommBase;

public class BaseTerm : CommBase
{
	public static TermForm frm;
	public static BaseTerm term;
	public static CommBaseTermSettings settings;
	public static string settingsFileName = "";

	private int lineCount = 0;

	public class CommBaseTermSettings : CommBaseSettings
	{
		public bool showAsHex = false;
		public bool breakLineOnChar = false;
		public ASCII lineBreakChar = 0;
		public int charsInLine = 0;

		public static new CommBaseTermSettings LoadFromXML(Stream s)
		{
			return (CommBaseTermSettings)LoadFromXML(s, typeof(CommBaseTermSettings));
		}
	}

	/// <summary>
	/// The main entry point for the application.
	/// </summary>
	[STAThread]
	static int Main(string[] args) 
	{
		if (args.Length == 1)
		{
			FileInfo f = new FileInfo(args[0]);
			if (f.Exists)
			{
				settingsFileName = f.Name;
				settings = CommBaseTermSettings.LoadFromXML(f.OpenRead());
				if (settings == null)
				{
					MessageBox.Show("Bad settings file", "CommBase Terminal", MessageBoxButtons.OK);
					return 0;
				}
			}
		}
		else
		{
			settings = new CommBaseTermSettings();
		}
		term = new BaseTerm();
		frm = new TermForm();
		Application.Run(frm);
		return 0;
	}

	public bool Immediate = false;

	public void SendChar(byte c)
	{
		try
		{
			if (Immediate)
				SendImmediate(c);
			else
				Send(c);
		}
		catch (CommPortException e)
		{
			frm.ShowException(e);
		}
	}

	public void SendFile(FileStream fs)
	{
		byte[] buffer = new byte[fs.Length];
		fs.Read(buffer, 0, (int)fs.Length);
		Send(buffer);
	}

	public bool SendCtrl(string s)
	{
		ASCII a = 0;
		try
		{
			a = (ASCII)ASCII.Parse(a.GetType(), s, true);
		}
		catch
		{
			return false;
		}
		SendChar((byte)a);
		return true;
	}
		
	public void setOPTicks(CheckBox chk)
	{
		switch (int.Parse(chk.Tag.ToString()))
		{
			case 0:
				chk.Enabled = base.RTSavailable;
				chk.Checked = base.RTS;
				break;
			case 1:
				chk.Enabled = base.DTRavailable;
				chk.Checked = base.DTR;
				break;
			case 2:
				chk.Enabled = true;
				chk.Checked = base.Break;
				break;
		}
	}

	public void OPClick(CheckBox chk)
	{
		try
		{
			switch (int.Parse(chk.Tag.ToString()))
			{
				case 0: base.RTS = chk.Checked; break;
				case 1: base.DTR = chk.Checked; break;
				case 2: base.Break = chk.Checked; break;
			}
		}
		catch (CommPortException e)
		{
			frm.ShowException(e);
		}
	}

	public new QueueStatus GetQueueStatus()
	{
		return base.GetQueueStatus();
	}

	public new bool IsCongested()
	{
		return base.IsCongested();
	}
		
	public void Settings()
	{
		SettingsForm f = new SettingsForm(settings);
		f.ShowDialog();
	}

	protected override CommBaseSettings CommSettings()
	{
		return settings;
	}

	protected override void OnRxChar(byte c)
	{
		string s; bool nl = false;
		ASCII v = (ASCII)c;
		if (settings.charsInLine > 0)
		{
			nl = (++lineCount >= settings.charsInLine);
		}
		if (settings.breakLineOnChar) if (v == settings.lineBreakChar) nl = true;
		if (nl) lineCount = 0;
		if (settings.showAsHex)
		{
			s = c.ToString("X2");
			if (!nl) s += " ";
		}
		else
		{
			if ((c < 0x20) || (c > 0x7E))
			{
				s = "<" + v.ToString() + ">";
			}
			else
			{
				s = new string((char)c, 1);
			}
		}
		frm.ShowChar(s, nl);
	}

	protected override void OnBreak()
	{
		frm.ShowMsg(">>>> BREAK");
	}

	protected override bool AfterOpen()
	{
		frm.OnOpen();
		ModemStatus m = GetModemStatus();
		frm.SetIndics(m.cts, m.dsr, m.rlsd, m.ring);
		return true;
	}

	protected override void BeforeClose(bool e)
	{
		if ((settings.autoReopen) && (e))
		{
			frm.OnOpen();
		}
		else
		{
			frm.OnClose();
			frm.ShowMsg(">>>> OFFLINE");
		}
	}

	protected override void OnStatusChange(ModemStatus c, ModemStatus v)
	{
		frm.SetIndics(v.cts, v.dsr, v.rlsd, v.ring);
	}
}