sending sms or recieving sms from gsm modem to tracking unit : The Official Microsoft ASP.NET Forums

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maifs

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375 Points

sending sms or recieving sms from gsm modem to tracking unit

Apr 10, 2009 10:49 AM|LINK

want to make an application which can send sms or recieve sms from gsm modem to tracking unit device. i want to write my own whole code means no outer libraries have to use within it. i want to write it my ownself . i have to made not for mobile device, i attached gsm modem with my computer through PCM slot.

Please mark as Answer, if it helps you
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maifs

Moved by anas on Apr 10, 2009 11:01 AM

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SurendraKish...

Contributor

2078 Points

376 Posts

Re: sending sms or recieving sms from gsm modem to tracking unit

Apr 10, 2009 01:16 PM|LINK

Checkout this article. this might help u out.

http://www.codeproject.com/KB/cs/SMS.aspx?fid=457949&df=90&mpp=25&noise=3&sort=Position&view=Quick&fr=51

MARK AS ANSWER IF MY POST HELPED YOU!
THIS REDUCES TIME FOR OTHERS..!

Edited by maifs on Apr 25, 2009 05:31 PM
Edited by maifs on Apr 25, 2009 05:39 PM
Edited by maifs on Apr 25, 2009 05:39 PM
Edited by maifs on Apr 27, 2009 07:28 AM
Edited by maifs on Apr 27, 2009 07:31 AM
Edited by maifs on Apr 27, 2009 07:38 AM
Marked as answer by maifs on Apr 27, 2009 07:56 AM

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maifs

Member

375 Points

378 Posts

Re: sending sms or recieving sms from gsm modem to tracking unit

Apr 10, 2009 03:06 PM|LINK

i have already checked it, it contains libraries but i want to made my own . i want to write the whole code for it not using libraries.

Please mark as Answer, if it helps you
________________________
maifs

Edited by maifs on Apr 25, 2009 05:40 PM
Edited by maifs on Apr 27, 2009 07:29 AM

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irisweb

Member

26 Points

9 Posts

Re: sending sms or recieving sms from gsm modem to tracking unit

Apr 23, 2009 10:22 AM|LINK

Here is a good article on Sending SMS in C# using AT Command GSM Modem. There is a Sample Project for Download. If you need more information on this please feel free to ask to CodeGlobe Contributors

http://codeglobe.blogspot.com/2009/02/sending-sms-in-cnet-using-gsm-modem-and.html

Also there is AT Command Set of Sony Ericssion

http://codeglobe.blogspot.com/2009/02/at-command-set-for-sony-ericsson.html

Edited by maifs on Apr 25, 2009 05:31 PM
Edited by maifs on Apr 25, 2009 05:39 PM
Edited by maifs on Apr 25, 2009 05:39 PM
Edited by maifs on Apr 27, 2009 07:29 AM
Edited by maifs on Apr 27, 2009 07:31 AM
Edited by maifs on Apr 27, 2009 07:38 AM
Marked as answer by maifs on Apr 27, 2009 07:56 AM

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syedyaserahm...

Member

209 Points

200 Posts

Re: sending sms or recieving sms from gsm modem to tracking unit

Apr 23, 2009 01:11 PM|LINK

Here is the C# code for sending and receiving sms

using System;
using System.Collections.Generic;
using System.Text;
using System.IO.Ports;
using System.Threading;
namespace ConsoleApplication1
{
class Program
{
static AutoResetEvent readNow = new AutoResetEvent(false);
static SerialPort port;
static void Main(string[] args)
{
try
{
Console.Write("Enter the port name your phone is connected to: ");
string portname = Console.ReadLine();
port = EstablishConnection(portname);
string recievedData = ExecuteCommand("AT", 300);
recievedData = ExecuteCommand("AT+CMGF=1", 300);
Console.Write("Enter the phone number you want to send message to: ");
String phoneNumber = Console.ReadLine();
String command = "AT+CMGS=\"" + phoneNumber + "\"";
Console.Write("Enter the message you want to send: ");
recievedData = ExecuteCommand(command, 300);
string message = Console.ReadLine();
command = message + char.ConvertFromUtf32(26) + "\r";
recievedData = ExecuteCommand(command, 300);
if (recievedData.EndsWith("\r\nOK\r\n")) recievedData = "Message sent successfully";
if (recievedData.Contains("ERROR"))
{
string recievedError = recievedData;
recievedError = recievedError.Trim();
recievedData = "Following error occured while sending the message" + recievedError;
}
Console.WriteLine(recievedData);
Console.ReadLine();
}
catch (Exception e)
{
Console.WriteLine("Error Message: "+e.Message.Trim()+"\r\nHit any key to Exit"); Console.ReadLine();
}
finally
{
if (port != null)
{
port.Close();
port.DataReceived -= new SerialDataReceivedEventHandler(DataReceived);
port = null;
}
}
}
static string ExecuteCommand(string command,int timeout)
{
port.DiscardInBuffer();
port.DiscardOutBuffer();
readNow.Reset();
port.Write(command+"\r");
string recieved = receive(timeout);
return recieved;
}
static string receive(int timeout)
{
string buffer = string.Empty;
do
{
if (readNow.WaitOne(timeout, false))
{
string t = port.ReadExisting();
buffer += t;
}
}
while (!buffer.EndsWith("\r\nOK\r\n") && !buffer.EndsWith("\r\n> ") && !buffer.Contains("ERROR"));
return buffer;
}
static SerialPort EstablishConnection(string portName)
{
SerialPort port = new SerialPort();
port.PortName = portName;
port.BaudRate = 19200;
port.DataBits = 8;
port.StopBits = StopBits.One;
port.Parity = Parity.None; port.ReadTimeout = 300;
port.WriteTimeout = 300;
port.Encoding = Encoding.GetEncoding("iso-8859-1");
port.DataReceived += new SerialDataReceivedEventHandler(DataReceived);
port.Open();
port.DtrEnable = true;
port.RtsEnable = true;
return port;
}
static void DataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (e.EventType == SerialData.Chars) readNow.Set();
}

}
}

Please mark as answer if helpful this is not using any external libraries

Edited by syedyaserahmed on Apr 23, 2009 01:13 PM
Edited by syedyaserahmed on Apr 23, 2009 01:14 PM
Edited by maifs on Apr 25, 2009 05:31 PM
Edited by maifs on Apr 25, 2009 05:39 PM
Edited by maifs on Apr 25, 2009 05:40 PM
Edited by maifs on Apr 27, 2009 07:29 AM
Edited by maifs on Apr 27, 2009 07:31 AM
Edited by maifs on Apr 27, 2009 07:38 AM
Marked as answer by maifs on Apr 27, 2009 07:56 AM

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rastogi.mahe...

Member

117 Points

47 Posts

Re: sending sms or recieving sms from gsm modem to tracking unit

May 29, 2009 08:49 AM|LINK

Hi,

I am using this code on Windows form but Code string recievedData = ExecuteCommand("AT", 300); Hang at this Line

Code is given below

static AutoResetEvent readNow = new AutoResetEvent(false);

static SerialPort port;

private void btnActive_Click(object sender, EventArgs e)

{

try

{

//Console.Write("Enter the port name your phone is connected to: ");

//string portname = Console.ReadLine();

string portname = txtPortName.Text;

port = EstablishConnection(portname);

string recievedData = ExecuteCommand("AT", 300); // Hang On this Line

recievedData = ExecuteCommand("AT+CMGF=1", 300);

// Console.Write("Enter the phone number you want to send message to: ");

//String phoneNumber = Console.ReadLine();

String phoneNumber = txtPhoneNumber.Text;

String command = "AT+CMGS=\"" + phoneNumber + "\"";

//Console.Write("Enter the message you want to send: ");

recievedData = ExecuteCommand(command, 300);

//string message = Console.ReadLine();

string message = txtMessage.Text;

command = message + char.ConvertFromUtf32(26) + "\r"; recievedData = ExecuteCommand(command, 300);

if (recievedData.EndsWith("\r\nOK\r\n"))

recievedData = "Message sent successfully";

if (recievedData.Contains("ERROR"))

{

string recievedError = recievedData;

recievedError = recievedError.Trim();

recievedData = "Following error occured while sending the message" + recievedError;

}

//Console.WriteLine(recievedData);

MessageBox.Show(recievedData);

//Console.ReadLine();

}

catch (Exception ex)

{

//Console.WriteLine("Error Message: " + ex.Message.Trim() + "\r\nHit any key to Exit");

//Console.ReadLine();

MessageBox.Show(ex.ToString());

}

finally

{

if (port != null)

{

port.Close();

port.DataReceived -= new SerialDataReceivedEventHandler(DataReceived); port = null;

}

static string ExecuteCommand(string command, int timeout)

{

port.DiscardInBuffer();

port.DiscardOutBuffer();

readNow.Reset(); port.Write(command + "\r");string recieved = receive(timeout); return recieved;

}

static string receive(int timeout)

{

string buffer = string.Empty;

do

{

if (readNow.WaitOne(timeout, false))

{

string t = port.ReadExisting();

buffer += t;

}

while (!buffer.EndsWith("\r\nOK\r\n") && !buffer.EndsWith("\r\n> ") && !buffer.Contains("ERROR"));return buffer;

}

static SerialPort EstablishConnection(string portName)

{

SerialPort port = new SerialPort();

port.PortName = portName;

port.BaudRate = 19200;

//port.BaudRate = 9600;

port.DataBits = 8;

port.StopBits = StopBits.One;port.Parity = Parity.None;

port.ReadTimeout = 300;

port.WriteTimeout = 300;

port.Encoding = Encoding.GetEncoding("iso-8859-1");port.DataReceived += new SerialDataReceivedEventHandler(DataReceived);

port.Open();

port.DtrEnable = true;

port.RtsEnable = true; return port;

}

static void DataReceived(object sender, SerialDataReceivedEventArgs e)

{

if (e.EventType == SerialData.Chars) readNow.Set();

}

Please help me. It's Urgent

Reply

syedyaserahm...

Member

209 Points

200 Posts

Re: sending sms or recieving sms from gsm modem to tracking unit

May 30, 2009 07:32 AM|LINK

Hi! Rastogi

Please check your connection details, might be the problem with the port i think it is not connected properly, and one more thing according to me the baud rate must be around 11,000 .

test the connection with hyper terminal with the same parameter that ur setting in the program and test the AT commands.

i hope this will solve your problem .

Reply

maifs

Member

375 Points

378 Posts

Re: sending sms or recieving sms from gsm modem to tracking unit

Nov 20, 2009 09:01 PM|LINK

i am facing a problem when sendig or receiving messages from GSM modem.

when i try to debug this below code then it throws an exception such as:

{System.ArgumentException: The given port name does not start with COM/com or does not resolve to a valid serial port.
Parameter name: portName
   at System.IO.Ports.SerialStream..ctor(String portName, Int32 baudRate, Parity parity, Int32 dataBits, StopBits stopBits, Int32 readTimeout, Int32 writeTimeout, Handshake handshake, Boolean dtrEnable, Boolean rtsEnable, Boolean discardNull, Byte parityReplace)
   at System.IO.Ports.SerialPort.Open()
   at _Default.EstablishConnection(String portName) in e:\Lectures\sullAll\lectures\finalProject\Final Project Application\VehicleTrackingSystem\Default.aspx.cs:line 106
   at _Default.btnSubmit_Click(Object sender, EventArgs e) in e:\Lectures\sullAll\lectures\finalProject\Final Project Application\VehicleTrackingSystem\Default.aspx.cs:line 33}

i am trying this..

Please mark as Answer, if it helps you
________________________
maifs

Edited by maifs on Nov 21, 2009 12:23 PM

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jayakumari

Member

6 Points

4 Posts

Re: sending sms or recieving sms from with our gsm modem

Nov 23, 2009 10:15 AM|LINK

i need a asp.net coding to send sms from pc

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maifs

sending sms or recieving sms from gsm modem to tracking unit

SurendraKish...

Re: sending sms or recieving sms from gsm modem to tracking unit

maifs

Re: sending sms or recieving sms from gsm modem to tracking unit

irisweb

Re: sending sms or recieving sms from gsm modem to tracking unit

syedyaserahm...

Re: sending sms or recieving sms from gsm modem to tracking unit

rastogi.mahe...

Re: sending sms or recieving sms from gsm modem to tracking unit

syedyaserahm...

Re: sending sms or recieving sms from gsm modem to tracking unit

maifs

Re: sending sms or recieving sms from gsm modem to tracking unit

jayakumari

Re: sending sms or recieving sms from with our gsm modem

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