Дослідження режимів функціонування інтерфейсу USB

Рис.1

2.Програма в робочому вигляді  (Рис. 2)

 

 

Рис. 2

 

 

 

Графіки передачі посимвольних даних прізвища Куць в системі кодування NRZI.

 

Висновки: виконавши поставлене завдання, я ознайомився з процесом передачі даних через послідовний інтерфейс USB; створив програму передавача даних через послідовний USB інтерфейс, в якій передбачено сканування USB-портів на наявність підключених пристроїв до послідовного USB інтерфейсу, налаштування основних параметрів програми передачі  даних через послідовний USB інтерфейс; а також ознайомився з процесом формування та передачі  посимвольних даних у графічному представленні в схемі кодування NRZI через послідовний USB інтерфейс.

 

 

 

Додаток

Лістинг програми:

 

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

using System.IO;

using System.Runtime.InteropServices;

 

namespace Kuts_USB

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

            MyInit();

        }

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]

        public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam);

        const int WM_DeviceChange = 0x219; //что-то связанное с usb

        const int DBT_DEVICEARRIVAL = 0x8000; //устройство подключено

        const int DBT_DEVICEREMOVECOMPLETE = 0x8004; // устройство отключено

 

        protected override void WndProc(ref Message m)

        {

            base.WndProc(ref m);

 

            if (m.Msg == WM_DeviceChange)

            {

                if (m.WParam.ToInt32() == DBT_DEVICEARRIVAL)

                {

 

                    {

                        {

 

                        }

                    }

 

 

 

                 

 

 

 

  MessageBox.Show("Новий пристрій знайдено!");

 

                }

                if (m.WParam.ToInt32() == DBT_DEVICEREMOVECOMPLETE)

                {

                  

                    MessageBox.Show("Пристрій вилучено");

                }

              

                base.WndProc(ref m);

               

                if (m.Msg == WM_DeviceChange)

                {

                    if (m.WParam.ToInt32() == DBT_DEVICEREMOVECOMPLETE)

                    {

 

                        DriveInfo[] driveinfo = DriveInfo.GetDrives();

                        comboBox2.Items.Clear();

                        foreach (DriveInfo drive in driveinfo)

                        {

                            if ((drive.IsReady == true))

                            {

                                if (drive.DriveType.ToString() == "Removable")

                                    comboBox2.Items.Add(drive.Name.ToString());

 

                            }

                            comboBox2.Text = "";

                            richTextBox1.Text = "";

                            {

                            }

 

 

 

                        }

                    }

                }

            }

        }

          

          

       

 

        private void MyInit()

        {

 

            DriveInfo[] pff = DriveInfo.GetDrives();

            foreach (DriveInfo driveinfo in pff)

            {

                if ((driveinfo.IsReady == true) && (driveinfo.DriveType == DriveType.Removable))

                {

                    if (driveinfo.DriveType.ToString() == "Removable")

                        comboBox2.Items.Add(driveinfo.Name);

                    comboBox2.SelectedIndex = 0;

 

                }

 

 

            }

        }

 

        private void button1_Click(object sender, EventArgs e)

        {

 

            Stream myStream = null;

            OpenFileDialog openFileDialog1 = new OpenFileDialog();

openFileDialog1.InitialDirectory = textBox1.Text.ToString();

 

            openFileDialog1.Filter = "txt files (*.txt)|*.txt";

            openFileDialog1.FilterIndex = 2;

            openFileDialog1.RestoreDirectory = true;

           

 

 

            if (openFileDialog1.ShowDialog() == DialogResult.OK)

            {

                try

                {

                    if ((myStream = openFileDialog1.OpenFile()) != null)

                    {

                        using (myStream)

                        {

                            TextReader read = new StreamReader(openFileDialog1.FileName);

                            richTextBox1.Text = read.ReadToEnd();

                            toolStripStatusLabel1.Text = "Шлях до файлу:  " + openFileDialog1.FileName;

                            read.Close();

 

 

                        }

                    }

                }

                catch (Exception ex)

                {

                    MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);

                }

            }

        }

 

        private void button2_Click(object sender, EventArgs e)

        {

            Stream myStream;

            SaveFileDialog saveFileDialog1 = new SaveFileDialog();

 

            saveFileDialog1.Filter = "txt files (*.txt)|*.txt";

            saveFileDialog1.FilterIndex = 2;

            saveFileDialog1.RestoreDirectory = true;

 

            if (saveFileDialog1.ShowDialog() == DialogResult.OK)

            {

                if ((myStream = saveFileDialog1.OpenFile()) != null)

                {

 

                    myStream.Close();

                    File.WriteAllText(@saveFileDialog1.FileName, richTextBox1.Text.ToString());

                }

            }

        }

 

        private void открытьToolStripMenuItem_Click(object sender, EventArgs e)

        {

            Stream myStream = null;

            OpenFileDialog openFileDialog1 = new OpenFileDialog();

 

            openFileDialog1.InitialDirectory = comboBox2.Items[comboBox2.SelectedIndex].ToString();

            openFileDialog1.Filter = "txt files (*.txt)|*.txt";

            openFileDialog1.FilterIndex = 2;

            openFileDialog1.RestoreDirectory = true;

 

            if (openFileDialog1.ShowDialog() == DialogResult.OK)

            {

                try

                {

                    if ((myStream = openFileDialog1.OpenFile()) != null)

                    {

                        using (myStream)

                        {

                            TextReader read = new StreamReader(openFileDialog1.FileName);

                            richTextBox1.Text = read.ReadToEnd();

                            read.Close();

 

                        }

                    }

                }

                catch (Exception ex)

                {

                    MessageBox.Show("Error: Could not read file from disk. Original error: " + ex.Message);

                }

            }

        }

 

        private void button3_Click(object sender, EventArgs e)

        {

            DriveInfo[] driveinfo = DriveInfo.GetDrives();

            comboBox2.Items.Clear();

            foreach (DriveInfo drive in driveinfo)

            {

                if ((drive.IsReady == true))

                {

                    if (drive.DriveType.ToString() == "Removable")

                        comboBox2.Items.Add(drive.Name.ToString());

 

                }

                comboBox2.Text = "";

                richTextBox1.Text = "";

               

                label1.Text = "";

                label2.Text = "";

                label4.Text = "";

                label5.Text = "";

                label6.Text = "";

                label7.Text = "";

                label8.Text = "";

                label9.Text = "";

                textBox1.Text = "";

                textBox2.Text = "";

                listBox1.Items.Clear();

                toolStripStatusLabel1.Text = "";

                progressBar1.Value = 0;

            }

        }

 

        private void toolStripStatusLabel1_Click(object sender, EventArgs e)

        {

 

        }

 

        private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)

        {

            Drive_Info = new System.IO.DriveInfo(comboBox2.Text);

            label1.Text = Drive_Info.Name;

            if (Drive_Info.IsReady)

            {

               

               

                label4.Text = Drive_Info.DriveFormat;

                label5.Text = Drive_Info.DriveType.ToString();

                label6.Text =  Drive_Info.RootDirectory.FullName;

                label2.Text = comboBox2.SelectedItem.ToString() + "*.txt";

                label8.Text =  + (Drive_Info.TotalFreeSpace / 1024 / 1024) + " Mb";

                long usedSpace = 0;

                usedSpace = Drive_Info.TotalSize - Drive_Info.TotalFreeSpace;

                label9.Text = (usedSpace / 1024 ) + " Kb";

                textBox3.Text = (usedSpace / 1024) + "";

                label7.Text = + (Drive_Info.TotalSize / 1024 ) + " Mb";

                textBox1.Text = comboBox2.SelectedItem.ToString();

                textBox2.Text = comboBox2.SelectedItem.ToString();

                richTextBox1.Text = "";

                listBox1.Items.Clear();

 

               

                progressBar1.Maximum = 3956440;

                progressBar1.Minimum = 0;

                 progressBar1.Value = Convert.ToInt32(textBox3.Text);

 

                DirectoryInfo dir = new DirectoryInfo(textBox1.Text.ToString());

                foreach (FileInfo files in dir.GetFiles("*.txt"))

                {

                    listBox1.Items.Add(files.Name);

                }

 

            }

        }

 

        private void button4_Click(object sender, EventArgs e)

        {

            {

                DriveInfo[] drives = DriveInfo.GetDrives();

                foreach (DriveInfo drive in drives)

                {

                    if ((drive.IsReady == true) && (drive.DriveType == DriveType.Removable))

                    {

                        openFileDialog1.InitialDirectory = comboBox2.Text.ToString();

                                          

 

 

                    }

 

                }

 

            }

        }

 

        private void button5_Click(object sender, EventArgs e)

 

openFileDialog1.InitialDirectory = textBox1.Text.ToString();

            TextReader read = new StreamReader(textBox1.Text);

            richTextBox1.Text = read.ReadToEnd();

            read.Close();

            toolStripStatusLabel1.Text = "Шлях до файлу:  " + textBox1.Text ;

                  }

 

        private void button6_Click(object sender, EventArgs e)

       

        private void Form1_Load(object sender, EventArgs e)

        {

            System.IO.DriveInfo[] drives = System.IO.DriveInfo.GetDrives();

            for (int i = 0; i <= drives.Length - 1; i++)

           

        }

 

        private void button6_Click_1(object sender, EventArgs e)

        {

            SaveFileDialog saveFile1 = new SaveFileDialog();

            saveFile1.DefaultExt = "*.txt";

            saveFile1.Filter = "Text files|*.txt";

           if (saveFile1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&

                saveFile1.FileName.Length > 0)

            {

                using (StreamWriter sw = new StreamWriter(saveFile1.FileName, true))

                {

                    sw.WriteLine(richTextBox1.Text);

                    sw.Close();

                }

            }

        }

        public DriveInfo Drive_Info { get; set; }

 

        private void button7_Click(object sender, EventArgs e)

       

        private void button8_Click(object sender, EventArgs e)

        {

            StreamWriter sw = new StreamWriter(textBox2.Text.ToString());

            sw.WriteLine(richTextBox1.Text);

            sw.Close();

            MessageBox.Show("Файл  " + textBox2.Text.ToString() + "  збережено",

            "Зберегти файл",

            MessageBoxButtons.OK,

            MessageBoxIcon.Exclamation,

            MessageBoxDefaultButton.Button1);

        }