用C#写的一个串口通信的问题
今天用C#写了一个单片机串口的上位机，如图，单片机用跳线使串口的第2、3针连接，在本地计算机上实现串口通信电脑发送数据很正常（提示发送成功），但是一点接收缓冲区的数据的时候电脑就没反应的，好像瘫痪了，不知道哪里出错了~~
菜鸟一只，忘高人相助
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 WindowsFormsApplication1
{
public partial class t : Form
{
public t()
{
InitializeComponent();
}
private void t_Load(object sender, EventArgs e)
{
label1.Text = "端口";
button4.Enabled = false;
//get port names
comboBox1.Items.AddRange(System.IO.Ports.SerialPort.GetPortNames());
}
private void button1_Click(object sender, EventArgs e)
{
byte[] data = Encoding.Unicode.GetBytes(textBox1.Text);
string str = Convert.ToBase64String(data);
serialPort1.WriteLine(str);
MessageBox.Show("数据发送成功！", "系统提示");
}
private void button2_Click(object sender, EventArgs e)
{
byte[] data = Convert.FromBase64String(serialPort1.ReadLine());
textBox2.Text = Encoding.Unicode.GetString(data);
//serialPort1.Close();
MessageBox.Show("数据接收成功！", "系统提示");
}
private void button3_Click(object sender, EventArgs e)
{
serialPort1.PortName = "COM4";
serialPort1.BaudRate = 9600;
serialPort1.Open();
button3.Enabled = false;
button4.Enabled = true;
}
private void button4_Click(object sender, EventArgs e)
{
serialPort1.Close();
button4.Enabled = false;
button3.Enabled = true;
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
}
}
线程有冲突 private void button2_Click(object sender, EventArgs e)
{
byte[] data = new byte;
serialPort1.Read( data, 0, data.Lenght );
textBox2.Text = Encoding.Unicode.GetString(data);
//serialPort1.Close();
MessageBox.Show("数据接收成功！", "系统提示");
}
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