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 串口试验3
{
public partial class Form1 : Form
{
// SerialPort sp = new SerialPort("com4", 9600, Parity.None, 8, StopBits.One);
private void Form1_Load(object sender, EventArgs e)
{
}
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
SerialPort serialPort = new SerialPort("COM4", 9600, Parity.None, 8, StopBits.One);
serialPort.Open();
}
//string serialReadString;
int s;
private void serialPort_DataReceived_1(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
//serialReadString = sp.ReadExisting();
s = serialPort.ReadByte();
this.richTextBox1.Invoke
(
new MethodInvoker
(
delegate
{
//this.richTextBox1.AppendText(serialReadString);
int flag = 0;
if (s == 0x01)
{
flag = 1;
}
else if (s == 0x02)
{
flag = 2;
}
else if (s == 0x03)
{
flag = 3;
}
else if (s == 0x04)
{
flag = 4;
}
else if (s == 0x05)
{
flag = 5;
}
switch (flag)
{
case 1:
richTextBox1.Text = "桥梁";
break;
case 2:
richTextBox1.Text = "车站";
break;
case 3:
richTextBox1.Text = "隧道";
break;
case 4:
richTextBox1.Text = "临时限速";
break;
case 5:
richTextBox1.Text = "过分相";
break;
}
}
)
);
}
}
}
我想读串口的数据，很据数据的不同在窗体的文本框上显示相应的文字，例如读到01，显示桥梁；读到02显示隧道；独到03显示车站；独到04显示临时限速，读到05显示过分相，可是代码没反应，哪位老师看看我哪里出错了，不胜感激！
