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;
//添加的引用
using System.IO.Ports;
using System.Threading;
using Microsoft.Win32;
namespace JTproject
{
/*创建时间：
功能：监听串口
*创建作者：
**/
public partial class jianting : Form
{
public jianting()
{
InitializeComponent();
}
private SerialPort Sp = new SerialPort();
public delegate void HandleInterfaceUpdataDelegate(string text); //委托，此为重点
private HandleInterfaceUpdataDelegate interfaceUpdataHandle;
// private bool qiii = false;
private void jianting_Load(object sender, EventArgs e)
{
GetComList();
//txtcomid.Focus();
btnPause.Enabled = false;
}
private void UpdateTextBox(string text)
{
txtData.Text = text;
}
//监听
private void btnENT_Click(object sender, EventArgs e)
{
//if ((cmID.Text.Trim() != "") && (cmRate.Text != ""))
if ((cmID.Text.Trim()!= "") && cmRate.Text!= "")
{
interfaceUpdataHandle = new HandleInterfaceUpdataDelegate(UpdateTextBox);//实例化委托对象
Sp.PortName = cmID.Text.Trim();
Sp.BaudRate = Convert.ToInt32(cmRate.Text.Trim());
Sp.Parity = Parity.None;
Sp.StopBits = StopBits.One;
Sp.DataReceived += new SerialDataReceivedEventHandler(Sp_DataReceived);
Sp.ReceivedBytesThreshold = 1;
try
{
Sp.Open();
ATCommand3("AT+CLIP=1\r", "OK");
//txtcomid.ReadOnly = true;
btnPause.Enabled = true;
btnENT.Enabled = false;
}
catch
{
MessageBox.Show("端口" + cmID.Text.Trim() + "打开失败！");
}
}
else
{
MessageBox.Show("请输入正确的端口号和波特率！");
cmID.Focus();
}
}
//暂停
private void btnPause_Click(object sender, EventArgs e)
{
Sp.Close();
btnENT.Enabled = true;
btnPause.Enabled = false;
//txtcomid.ReadOnly = false;
}
private void jianting_FormClosing(object sender, FormClosingEventArgs e)
{
Sp.Close();
}
//sp是串口控件
public void Sp_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
string strTemp = "";
double iSecond = 0.5;
DateTime dtOld = System.DateTime.Now;
DateTime dtNow = System.DateTime.Now;
TimeSpan dtInter;
dtInter = dtNow - dtOld;
int i = Sp.BytesToRead;
if (i > 0)
{
try
{
strTemp = Sp.ReadExisting();
}
catch
{ }
if (strTemp.ToLower().IndexOf("\r") < 0)
{
i = 0;
}
else
{
this.Invoke(interfaceUpdataHandle, strTemp);
}
}
while (dtInter.TotalSeconds < iSecond && i <= 0)
{
dtNow = System.DateTime.Now;
dtInter = dtNow - dtOld;
i = Sp.BytesToRead;
if (i > 0)
{
try
{
strTemp += Sp.ReadExisting();
}
catch
{ }
if (strTemp.ToLower().IndexOf("\r") < 0)
{
i = 0;
}
else
{
this.Invoke(interfaceUpdataHandle, strTemp);
}
}
}
// do null
}
/// <summary>
/// 执行AT指令并返回 成功失败
/// </summary>
/// <param name="ATCmd">AT指令</param>
/// <param name="StCmd">AT指令标准结束标识</param>
/// <returns></returns>
private void ATCommand3(string ATCmd, string StCmd)
{
string response = "";
response = ATCommand(ATCmd, StCmd);
}
/// <summary>
/// 执行AT指令并返回结果字符
/// </summary>
/// <param name="ATCmd">AT指令</param>
/// <param name="StCmd">AT指令标准结束标识</param>
/// <returns></returns>
private string ATCommand(string ATCmd, string StCmd)
{
string response = "";
int i;
if (!ATCmd.EndsWith("\x01a"))
{
if (!(ATCmd.EndsWith("\r") || ATCmd.EndsWith("\r\n")))
{
ATCmd = ATCmd + "\r";
}
}
Sp.WriteLine(ATCmd);
//第一次读响应数据
if (Sp.BytesToRead > 0)
{
response = Sp.ReadExisting();
//去除前端多可能多读取的字符
if (response.IndexOf(ATCmd) > 0)
{
response = response.Substring(response.IndexOf(ATCmd));
}
else
{
}
if (response == "" || response.IndexOf(StCmd) < 0)
{
if (response != "")
{
if (response.Trim() == "ERROR")
{
//throw vError = new UnknowException("Unknown exception in sending command:" + ATCmd);
}
if (response.IndexOf("+CMS ERROR") >= 0)
{
string[] cols = new string[100];
cols = response.Split(';');
if (cols.Length > 1)
{
string errorCode = cols[1];
}
}
}
}
}
//读第一次没有读完的响应数据，直到读到特征数据或超时
for (i = 0; i < 3; i++)
{
Thread.Sleep(1000);
response = response + Sp.ReadExisting();
if (response.IndexOf(StCmd) >= 0)
{
break;
}
}
return response;
}
/// <summary>
/// 从注册表获取系统串口列表
/// </summary>
private void GetComList()
{
RegistryKey keyCom = Registry.LocalMachine.OpenSubKey("Hardware\\DeviceMap\\SerialComm");
if (keyCom != null)
{
string[] sSubKeys = keyCom.GetValueNames();
this.cmID.Items.Clear();
foreach (string sName in sSubKeys)
{
string sValue = (string)keyCom.GetValue(sName);
this.cmID.Items.Add(sValue);
}
}
}
private void cmID_DropDown(object sender, EventArgs e)
{
GetComList();
}
}
}
