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.IO.Ports;

namespace serial_tools
{
    public partial class Form1 : Form
    {
        String serialPortName;

        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            string[] ports = System.IO.Ports.SerialPort.GetPortNames(); // 獲取本機可用串口端口
            comboBoxPort.Items.AddRange(ports);
            comboBoxPort.SelectedIndex = comboBoxPort.Items.Count > 0 ? 0 : -1; // 有可用端口顯示第一個

            comboBoxBaudrate.Text = "115200"; // 默認波特率
            comboBoxDataBits.Text = "8"; // 默認數(shù)據(jù)位：8
            comboBoxStopbit.Text = "1"; // 默認停止位：1
            comboBoxCheck.Text = "無"; // 默認無校驗
        }

        /// <summary>
        /// 重寫 系統(tǒng)消息函數(shù)
        /// </summary>
        /// <param name="m"></param>
        protected override void WndProc(ref Message m)
        {
           
            base.WndProc(ref m);
        }

        /// <summary>
        /// 串口數(shù)據(jù)接收
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
        {
            int len = serialPort1.BytesToRead; // 獲取可讀字節(jié)數(shù)
            byte[] buff = new byte[len]; // 創(chuàng)建緩存數(shù)據(jù)數(shù)組
            serialPort1.Read(buff, 0, len); // 把數(shù)據(jù)讀取到buff數(shù)組

            string str = Encoding.Default.GetString(buff); // Byte值轉(zhuǎn)ASCII字符串

            Invoke((new Action(() => {
                if (checkBoxHexShow.Checked)
                {
                    textBoxRecv.AppendText(byteToHexStr(buff));
                }
                else
                { 
                    textBoxRecv.AppendText(str);                 
                }
            
            }))); // 對話框追加顯示數(shù)據(jù)
        }


        public static string byteToHexStr(byte[] bytes)
        {
            string hexStr = "";
            try
            {
                if (bytes != null) {
                    for (int i = 0; i < bytes.Length; i++)
                    {
                        hexStr += bytes[i].ToString("X2");
                        hexStr += " "; // 兩個Hex數(shù)值以空格隔開
                    }
                }

                return hexStr;
            }
            catch (Exception)
            {
                return hexStr;
            }
        }

        /// <summary>
        /// 打開關(guān)閉串口
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonPortOnOff_Click(object sender, EventArgs e)
        {
            if (buttonPortOnOff.Text == "打開串口") {
                try
                {
                    serialPort1.PortName = comboBoxPort.Text; // 獲取選擇的串口端口
                    serialPortName = comboBoxPort.Text;
                    serialPort1.BaudRate = int.Parse(comboBoxBaudrate.Text); // 獲取選擇的波特率
                    serialPort1.DataBits = int.Parse(comboBoxDataBits.Text); // 獲取選擇的數(shù)據(jù)位

                    // 設(shè)置停止位
                    if (comboBoxStopbit.Text == "1") { serialPort1.StopBits = StopBits.One; }
                    else if (comboBoxStopbit.Text == "1.5") { serialPort1.StopBits = StopBits.OnePointFive; }
                    else if (comboBoxStopbit.Text == "2") { serialPort1.StopBits = StopBits.Two; }

                    // 設(shè)置奇偶校驗
                    if (comboBoxCheck.Text == "無") { serialPort1.Parity = Parity.None; }
                    else if (comboBoxCheck.Text == "奇校驗") { serialPort1.Parity = Parity.Even; }
                    else if (comboBoxCheck.Text == "偶校驗") { serialPort1.Parity = Parity.Odd; }

                    // 打開串口
                    serialPort1.Open();
                    buttonPortOnOff.Text = "關(guān)閉串口";

                }
                catch (Exception ex)
                {
                    MessageBox.Show("串口打開失敗"+ ex.ToString(), "警告",
                        MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            else
            {
                try
                {
                    serialPort1.Close();
                }
                catch (Exception ex)
                { 
                
                }

                buttonPortOnOff.Text = "打開串口"; 
            }
        }

        /// <summary>
        /// 清空接收數(shù)據(jù)
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonClearRecv_Click(object sender, EventArgs e)
        {
            textBoxRecv.Clear();
        }

        /// <summary>
        /// 發(fā)送數(shù)據(jù)
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonSendData_Click(object sender, EventArgs e)
        {
            String Str = textBoxSend.Text.ToString(); // 獲取發(fā)送文本框里的數(shù)據(jù)
            try
            {
                if (Str.Length > 0) {
                    serialPort1.Write(Str); // 串口發(fā)送數(shù)據(jù)
                }
            }
            catch (Exception)
            { 
            
            }
        }

        /// <summary>
        /// 清除發(fā)送數(shù)據(jù)
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void buttonClearSend_Click(object sender, EventArgs e)
        {
            textBoxSend.Clear();
        }

        private void comboBoxPort_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

        private void comboBoxPort_MouseClick(object sender, MouseEventArgs e)
        {

        }
    }
}