fbulkxfer.cs

Simple code to test usb connections.Try it...

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Text;
using System.Runtime.InteropServices;
using EzUsb;

namespace TestUSB
{
	/// <summary>
	/// Summary description for FBulkXfer.
	/// </summary>
	public class FBulkXfer : System.Windows.Forms.Form
	{
		private int _BlkSize = 1;

		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.Label label5;
		private System.Windows.Forms.Label label6;
		private System.Windows.Forms.Label label7;
		private System.Windows.Forms.ComboBox comboBox1;
		private System.Windows.Forms.TextBox textBoxBlkSize;
		private System.Windows.Forms.TextBox textBoxInData;
		private System.Windows.Forms.TextBox textBoxOutData;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.StatusBarPanel panel1;
		private System.Windows.Forms.StatusBar statusBar;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public FBulkXfer()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.label3 = new System.Windows.Forms.Label();
			this.label4 = new System.Windows.Forms.Label();
			this.label5 = new System.Windows.Forms.Label();
			this.label6 = new System.Windows.Forms.Label();
			this.label7 = new System.Windows.Forms.Label();
			this.comboBox1 = new System.Windows.Forms.ComboBox();
			this.textBoxBlkSize = new System.Windows.Forms.TextBox();
			this.textBoxInData = new System.Windows.Forms.TextBox();
			this.textBoxOutData = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.statusBar = new System.Windows.Forms.StatusBar();
			this.panel1 = new System.Windows.Forms.StatusBarPanel();
			((System.ComponentModel.ISupportInitialize)(this.panel1)).BeginInit();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(16, 16);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(536, 40);
			this.label1.TabIndex = 0;
			this.label1.Text = "This application demonstrates using Bulk Transfers to move data in and out of EZ-" +
				"USB devices using the EZ-USB Generic Device Driver.";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(40, 80);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(288, 24);
			this.label2.TabIndex = 1;
			this.label2.Text = "Follow the steps listed below to see the demonstration.";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(16, 128);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(440, 24);
			this.label3.TabIndex = 2;
			this.label3.Text = "1) Use the \"Ez-USB Control Panel\" application to download \"Ep_Pair.hex\" to a EZ-U" +
				"SB ";
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(16, 166);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(272, 23);
			this.label4.TabIndex = 3;
			this.label4.Text = "2) Choose the EZ-USB Board you selected in Step 1.";
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(16, 203);
			this.label5.Name = "label5";
			this.label5.Size = new System.Drawing.Size(296, 23);
			this.label5.TabIndex = 4;
			this.label5.Text = "3) Enter the number of characters that triggers a transfer:";
			// 
			// label6
			// 
			this.label6.Location = new System.Drawing.Point(16, 240);
			this.label6.Name = "label6";
			this.label6.Size = new System.Drawing.Size(416, 32);
			this.label6.TabIndex = 5;
			this.label6.Text = "4) Enter text into this textbox.  When the number of characters entered equals th" +
				"e  \"trigger\" size, the characters will appear in the output textbox.";
			// 
			// label7
			// 
			this.label7.Location = new System.Drawing.Point(16, 368);
			this.label7.Name = "label7";
			this.label7.Size = new System.Drawing.Size(152, 23);
			this.label7.TabIndex = 6;
			this.label7.Text = "5) See output text here:";
			// 
			// comboBox1
			// 
			this.comboBox1.Location = new System.Drawing.Point(328, 167);
			this.comboBox1.Name = "comboBox1";
			this.comboBox1.Size = new System.Drawing.Size(121, 21);
			this.comboBox1.TabIndex = 7;
			// 
			// textBoxBlkSize
			// 
			this.textBoxBlkSize.Location = new System.Drawing.Point(328, 204);
			this.textBoxBlkSize.Name = "textBoxBlkSize";
			this.textBoxBlkSize.TabIndex = 8;
			this.textBoxBlkSize.Text = "";
			this.textBoxBlkSize.TextChanged += new System.EventHandler(this.textBoxBlkSize_TextChanged);
			// 
			// textBoxInData
			// 
			this.textBoxInData.Location = new System.Drawing.Point(32, 280);
			this.textBoxInData.Multiline = true;
			this.textBoxInData.Name = "textBoxInData";
			this.textBoxInData.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.textBoxInData.Size = new System.Drawing.Size(424, 64);
			this.textBoxInData.TabIndex = 9;
			this.textBoxInData.Text = "";
			this.textBoxInData.TextChanged += new System.EventHandler(this.textBoxInData_TextChanged);
			// 
			// textBoxOutData
			// 
			this.textBoxOutData.Location = new System.Drawing.Point(32, 392);
			this.textBoxOutData.Multiline = true;
			this.textBoxOutData.Name = "textBoxOutData";
			this.textBoxOutData.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.textBoxOutData.Size = new System.Drawing.Size(424, 64);
			this.textBoxOutData.TabIndex = 10;
			this.textBoxOutData.Text = "";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(472, 301);
			this.button1.Name = "button1";
			this.button1.TabIndex = 11;
			this.button1.Text = "Clear";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(472, 413);
			this.button2.Name = "button2";
			this.button2.TabIndex = 12;
			this.button2.Text = "Clear";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// statusBar
			// 
			this.statusBar.Location = new System.Drawing.Point(0, 471);
			this.statusBar.Name = "statusBar";
			this.statusBar.Panels.AddRange(new System.Windows.Forms.StatusBarPanel[] {
																						 this.panel1});
			this.statusBar.ShowPanels = true;
			this.statusBar.Size = new System.Drawing.Size(572, 22);
			this.statusBar.SizingGrip = false;
			this.statusBar.TabIndex = 13;
			// 
			// panel1
			// 
			this.panel1.Width = 572;
			// 
			// FBulkXfer
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(572, 493);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.statusBar,
																		  this.button2,
																		  this.button1,
																		  this.textBoxOutData,
																		  this.textBoxInData,
																		  this.textBoxBlkSize,
																		  this.comboBox1,
																		  this.label7,
																		  this.label6,
																		  this.label5,
																		  this.label4,
																		  this.label3,
																		  this.label2,
																		  this.label1});
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
			this.MaximizeBox = false;
			this.Name = "FBulkXfer";
			this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Hide;
			this.Text = "FBulkXfer";
			this.Load += new System.EventHandler(this.FBulkXfer_Load);
			((System.ComponentModel.ISupportInitialize)(this.panel1)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		private void FBulkXfer_Load(object sender, System.EventArgs e)
		{
			SetupDriverComboBox();
			textBoxBlkSize.Text = _BlkSize.ToString();
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			textBoxInData.Text = "";
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			textBoxOutData.Text = "";
		}

		private void textBoxBlkSize_TextChanged(object sender, System.EventArgs e)
		{
			_BlkSize = int.Parse( textBoxBlkSize.Text );
			if( _BlkSize > Usb.MaxBlkSize )
			{
				_BlkSize = Usb.MaxBlkSize;
				textBoxBlkSize.Text = _BlkSize.ToString();
			}
		}

		private void textBoxInData_TextChanged(object sender, System.EventArgs e)
		{
			if( textBoxInData.Text.Length >= _BlkSize )
			{
				string inText = textBoxInData.Text;
				int byteCount = inText.Length;
				Usb usb = new Usb();
				usb.OnErrorMessage += new Usb.ErrorMessage( this.ErrorMessageHandler );
				if( usb.Open( (string)comboBox1.SelectedItem ) )
				{
					char[] data = inText.ToCharArray();
					int size = Buffer.ByteLength( data );
					byte[] byteBuf = new byte[size];
					Buffer.BlockCopy( data, 0, byteBuf, 0, size );
					int count = usb.BulkWrite( byteBuf, 1 );
					if( count != 0 )
					{
						byteBuf = usb.BulkRead( 0 );
						if( byteBuf != null )
						{
							data = new char[byteBuf.Length];
							Buffer.BlockCopy( byteBuf, 0, data, 0, data.Length );
							string msg = new String( data );
							textBoxOutData.Text = msg;
						}
						else
						{
							MessageBox.Show( "Bulk Read failed.",
								"EZ-USB Error", MessageBoxButtons.OK, MessageBoxIcon.Error );
						}
					}
					else
					{
						MessageBox.Show( "Bulk Write failed.",
							"EZ-USB Error", MessageBoxButtons.OK, MessageBoxIcon.Error );
					}
					usb.Close();
				}
			}
		}
		
		private const int MAX_USB_DEV_NUMBER = 32;

		private void SetupDriverComboBox()
		{
			comboBox1.Items.Clear();

			Usb usb = new Usb();
			usb.OnErrorMessage += new Usb.ErrorMessage( this.ErrorMessageHandler );
			bool found = false;
			for( int j = 0 ; j < MAX_USB_DEV_NUMBER ; j++ )
			{
				StringBuilder driverName = new StringBuilder( "ezusb-" + j.ToString() );
				if( usb.Open( driverName.ToString() ) )
				{
					comboBox1.Items.Add( driverName.ToString() );
					found = true;
					usb.Close();
				}
			}
			if( !found )
			{
				MessageBox.Show( "No EZ-USB device drivers were found.  Perhaps no device is connected.",
					"EZ-USB Error", MessageBoxButtons.OK, MessageBoxIcon.Error );
			}
			else
			{
				statusBar.Panels[0].Text = "";
				comboBox1.SelectedIndex = 0;
				comboBox1.Select( 0, 0 );
			}
		}

		private void ErrorMessageHandler( object sender, ErrorEventArgs e )
		{
			statusBar.Panels[0].Text = e.Message;
		}
	}
}