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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;
namespace project4
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
System.Windows.Forms.Control.CheckForIllegalCrossThreadCalls = false;
}
private void button1_Click(object sender, EventArgs e)
{
try
{
serialPort1.PortName = comboBox1.Text;//設(shè)置串口號(hào)
serialPort1.BaudRate = Convert.ToInt32(comboBox2.Text, 10);//十進(jìn)制數(shù)據(jù)轉(zhuǎn)換，設(shè)置波特率
serialPort1.Open();//打開(kāi)串口
button1.Enabled = false;//打開(kāi)串口按鈕不可用
button2.Enabled = true;//關(guān)閉串口按鈕可用
}
catch
{
MessageBox.Show("端口錯(cuò)誤,請(qǐng)檢查串口", "錯(cuò)誤");
}
}
private void Form1_Load(object sender, EventArgs e)
{
for (int i = 1; i < 20; i++)
{
comboBox1.Items.Add("COM" + i.ToString());
}
comboBox1.Text = "COM3";//串口號(hào)默認(rèn)值
comboBox2.Text = "9600";//波特率默認(rèn)值
serialPort1.DataReceived += new SerialDataReceivedEventHandler(serialPort1_DataReceived);//添加事件處理程序
}
private void serialPort1_DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (!radioButton3.Checked)//如果接收模式為字符模式
{
string str = serialPort1.ReadExisting();//字符串方式讀
textBox1.AppendText(str);//添加內(nèi)容textBox文本框中依次向后顯示
}
else //如果接收模式為數(shù)值接收
{
//易出現(xiàn)異常：由于線程退出或應(yīng)用程序請(qǐng)求，已中止 I/O 操作
//加入異常處理
try
{
int data;
data = serialPort1.ReadByte();
string str = Convert.ToString(data, 16).ToUpper();//轉(zhuǎn)換為大寫(xiě)十六進(jìn)制字符串
textBox1.AppendText("0x" + (str.Length == 1 ? "0" + str : str) + " ");//空位補(bǔ)“0”
}
catch
{
this.Close();//關(guān)閉當(dāng)前窗體
}
}
}
private void button2_Click(object sender, EventArgs e)
{
try
{
serialPort1.Close();//關(guān)閉串口
button1.Enabled = true;//打開(kāi)串口按鈕可用
button2.Enabled = false;//關(guān)閉串口按鈕不可用
}
catch
{
MessageBox.Show("串口關(guān)閉錯(cuò)誤","錯(cuò)誤");
}
}
private void button3_Click(object sender, EventArgs e)
{
byte[] Data = new byte[1];
if (serialPort1.IsOpen)//判斷串口是否打開(kāi)，如果打開(kāi)執(zhí)行下一步操作
{
if (textBox2.Text != "")
{
if (!radioButton1.Checked)//如果發(fā)送模式是字符模式
{
try
{
serialPort1.WriteLine(textBox2.Text);//寫(xiě)數(shù)據(jù)
}
catch
{
MessageBox.Show("串口數(shù)據(jù)寫(xiě)入錯(cuò)誤", "錯(cuò)誤");//出錯(cuò)提示
serialPort1.Close();
button1.Enabled = true;//打開(kāi)串口按鈕可用
button2.Enabled = false;//關(guān)閉串口按鈕不可用
}
}
else
{
for (int i = 0; i < (textBox2.Text.Length - textBox2.Text.Length % 2) / 2; i++)//取余3運(yùn)算作用是防止用戶輸入的字符為奇數(shù)個(gè)
{
Data[0] = Convert.ToByte(textBox2.Text.Substring(i * 2, 2), 16);
serialPort1.Write(Data, 0, 1);//循環(huán)發(fā)送（如果輸入字符為0A0BB,則只發(fā)送0A,0B）
}
if (textBox2.Text.Length % 2 != 0)//剩下一位單獨(dú)處理
{
Data[0] = Convert.ToByte(textBox2.Text.Substring(textBox2.Text.Length - 1, 1), 16);//單獨(dú)發(fā)送B（0B）
serialPort1.Write(Data, 0, 1);//發(fā)送
}
}
}
}
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
if (textBox2.Text != "")
button3.Enabled = true;//只有當(dāng)發(fā)送文本框內(nèi)的有內(nèi)容時(shí)才可以發(fā)送
else
button3.Enabled = false;
}
private void button4_Click(object sender, EventArgs e)
{
textBox1.Text="";//清屏
}
private void button5_Click(object sender, EventArgs e)
{
this.Close();
}
}
}

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