c#写的通过串口写AT指令发短信的程序，大家帮忙看看！
该程序发短信不是很稳定，有时发短信正确，有时又没反应，有时把AT指令一起发了！ 不知道什么原因！
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Collections;
using System.IO.Ports;
namespace MultiLangTest
{
public partial class SerialPortTest : Form
{
private SerialPort sp;
public SerialPortTest()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
Parity p = Parity.None;
switch (comboBox5.Text.ToLower())
{
case "none":
p = Parity.None;
break;
case "odd":
p = Parity.Odd;
break;
case "even":
p = Parity.Even;
break;
case "mark":
p = Parity.Mark;
break;
case "space":
p = Parity.Space;
break;
default:
break;
}
StopBits sb = StopBits.None;
switch (comboBox4.Text.ToLower())
{
case "1":
sb = StopBits.One;
break;
case "1.5":
sb = StopBits.OnePointFive;
break;
case "2":
sb = StopBits.Two;
break;
default:
break;
}
sp = new SerialPort(comboBox1.Text, Convert.ToInt32(comboBox2.Text),
p, Convert.ToInt32(comboBox3.Text), sb);
//sp.DataReceived += new SerialDataReceivedEventHandler(this.ReadSMSData);
if (sp.IsOpen)
{
//MessageBox.Show(string.Format("{0} 串口已经打开", comboBox1.Text));
sp.Close();
sp.Open();
}
try
{
sp.Open();
}
catch (UnauthorizedAccessException ex)
{
MessageBox.Show("错误：" + ex.Message);
return;
}
}
private void button2_Click(object sender, EventArgs e)
{
sp.Write("AT+CMGF=1\r");
sp.Write("AT+CMGs=\"13316979816\"\r");
sp.Write(this.textBox1.Text + "\x01a");//发送短信息，使用Ctrl+Z结束
}
private void groupBox1_Enter(object sender, EventArgs e)
{
}
private void label8_Click(object sender, EventArgs e)
{
}
private void textBox3_TextChanged(object sender, EventArgs e)
{
}
private void comboBox3_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void comboBox6_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void comboBox5_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void groupBox1_Enter_1(object sender, EventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void textBox2_TextChanged(object sender, EventArgs e)
{
}
private void comboBox1_SelectedIndexChanged_1(object sender, EventArgs e)
{
}
private void button4_Click_1(object sender, EventArgs e)
{
sp.Close();
Application.Exit();
}
}
}
[解决办法]
不是Write的，而是AT指令的返回值，比如AT+CMGF=1要返回一个OK，你得处理这个OK之后才去做别的
