AT Command

hi
I need to send "AT" Commands to a GSM Modem that is
connected to COM1 but idon't know how to use AT command in php.

best regards

 

I'm not sure if that exsist maybe you need to use other language like activex ?

 

<?php
class comport
{
 	var $port  ;
 	
	function comport( $portno )
	{
		$this->port = @fopen( sprintf( 'COM%d:', $portno ), 'w+' );
		if( !$this->port )
			die("Cannot open COM$portno, please check it is not in use");		
	}
	function write( $data )
	{
		return fwrite( $this->port, $data, strlen( $data ) );	
	}
	function _close( )
	{
		return fclose( $this->port );
	}
}
/**
 I HAVE NO IDEA HOW THESE COMMANDS ARE SUPPOSED TO BE FORMATTED
 FIND OUT IF YOU NEED TO WRITE BINARY DATA OR DECIMAL OR WHATEVER
 by all means try a string first
**/
$at = "AT XXXXX";
/**
 Open com port 1
**/
$com = new comport( 1 );
/**
 Write to com port 1
**/
if( $com->write( $at ) )
	echo "Wrote $at to COM1";
/**
 Close com port 1
**/
$com->_close( );
?>

PHP:

 

I found this interesting, and would edit the above post if I could, I have no idea what phone you use, or if you'll ever come back, but I gotta old moto v220 sitting about at home, so I connected it upto a com port and heres what I came up with :

<?php
error_reporting( 0 );
class v220
{
	var $portno;
	var $phonebooks;
	var $serialno;
	var $revision;
	var $charsets;
	var $modeldesc;
	
	function v220( $portno )
	{
		$this->portno = $portno;
		$testport = $this->command( "AT" );
		
		if( trim( $testport[0] ) != "OK" ):
			die("Cannot send commands to com $this->portno\r\n");
		endif;
		
		$this->phonebooks = $this->getpbs( );
		
		$this->serialno = $this->getserial( );
		
		$this->revision = $this->getrevision( );
		
		$this->charsets = $this->getcharsets( );
		
		$this->modeldesc = $this->getmodeldesc( );
	}
	function selectcharset( $charset )
	{
		if( in_array( $charset, $this->charsets ) ):
			$data = $this->command( "AT+CSCS=$charset" );
			return trim( $data[0] ) == "OK" ? true : false;
		endif;
	}
	function command( $command )
	{
		if( !( $write = fopen( "COM$this->portno:", 'a' ) ) ):
			print("Cannot open com $this->portno for writing\r\n");
			return false;
		else:
			fwrite( $write, $command . "\r\n" );
			fclose( $write );
		endif;
		
		if( !($read = fopen("COM$this->portno:", 'r')) ):
			print("Cannot open com $this->portno for reading\r\n");
		else:
			$data = null;
			while( !feof( $read ) ) :
				$data .= fgets( $read );
				if( preg_match( "#(OK|ERROR)#si", $data, $code )): break; endif;
			endwhile;
			fclose( $read );
		endif;	
		
		return array( $code[1], split("\n", $data ) );
	}
	function extended(  )
	{
		$data = $this->command( "AT+MODE=2" );
		return trim( $data[0] ) == "OK" ? true : false;
	}
	function dextended( )
	{
		$data = $this->command( "AT+MODE=0" );
		return trim( $data[0] ) == "OK" ? true : false;
	}
	function getserial( )
	{
		$data = $this->command( "AT+CGSN" );
		if( trim( $data[0] ) == "OK" ):
			$temp = split( ":", $data[1][1] );
			return trim( $temp[1] );
		endif;
	}
	function getcharsets( )
	{
		$data = $this->command( "AT+CSCS=?" );
		if( trim( $data[0] ) == "OK" ):
			$temp = split( ":", $data[1][1] );
			preg_match_all( '#"(.*?[^"])"#s', $temp[1], $charsets );
			return $charsets[1];
		endif;
	}
	function getmodeldesc( )
	{
		$data = $this->command( "AT+CGMM" );
		if( trim( $data[0] ) == "OK" ):
			$temp = split( ":", $data[1][1] );
			preg_match_all( '#"(.*?[^"])"#s', $temp[1], $mdesc );
			return $mdesc[1];
		endif;
	}
	function searchpbbyname( $name )
	{
		$entries = null;
		$data = $this->command( "AT+MPBF=\"$name\"" );
		if( trim( $data[0] ) == "OK" ):
			foreach( $data[1] as $result )
			{
				preg_match_all( '#"(.*?[^"])"#s', $result, $details );
				if( trim( $details[1][1] ) != "" ):
					$entries[] = $details[1][0];
				endif;
			}	
		endif;
		return $entries;
	}
	function getrevision( )
	{
		$data = $this->command( "AT+CGMR" );
		if( trim( $data[0] ) == "OK" ):
			$temp = split( ":", $data[1][1] );
			return preg_replace('#"#s', '', trim( $temp[1] ) );
		endif;
	}
	function htmlout( $output = "debug.html" )
	{
		$debug = fopen( $output, "w+" );
		foreach( $this as $k => $v )
		{
			switch( $k )
			{
				case "portno" :
					fwrite( $debug, "<h2>Connected to COM$v</h2>\n" );
				break;
				
				case "phonebooks" :
					fwrite( $debug, "<h2>Phonebooks available</h2>\n" );
					fwrite( $debug, "<ul>\n" );
					foreach( $v as $phonebook )
					{
						fwrite( $debug, "<li>$phonebook</li>\n" );
					}
					fwrite( $debug, "</ul>\n" );
				break;
				
				case "serialno" :
					fwrite( $debug, "<h2>Serial : $v</h2>\n" );
				break;
				
				case "revision" :
					fwrite( $debug, "<h2>Revision : $v</h2>\n" );
				break;
				
				case "charsets" :
					fwrite( $debug, "<h2>Charsets available</h2>\n" );
					fwrite( $debug, "<ul>\n" );
					foreach( $v as $charset )
					{
						fwrite( $debug, "<li>$charset</li>\n" );
					}
					fwrite( $debug, "</ul>\n" );
				break;
				
				case "modeldesc" :
					fwrite( $debug, "<h2>Model description data</h2>\n" );
					fwrite( $debug, "<ul>\n" );
					foreach( $v as $mdesc )
					{
						fwrite( $debug, "<li>$mdesc</li>\n" );
					}
					fwrite( $debug, "</ul>\n" );
				break;
			}
		}
		fclose( $debug );
	}
	function getpbs( )
	{
		$data = $this->command( "AT+CPBS=?" );
		if( trim( $data[0] ) == "OK" ):
			preg_match_all( '#"([A-Z]{2})"#si', $data[1][1], $pbs );
		else:
			return false;
		endif;
		return $pbs[1]; 
	}
}
$com = new v220( 3 );
$com->htmlout( );
?>

PHP:

and that gives me in html

Connected to COM3
Phonebooks available

* ME
* SM
* MT
* ON
* DC
* MC
* RC
* AD
* QD

Serial : IMEI353872006091164
Revision : R364_G_0B.D1.09R
Charsets available

* 8859-1
* ASCII
* GSM
* UCS2
* UTF8

Model description data

* GSM900
* GSM1800
* GSM1900
* MODEL=V220

I dunno what else you might do with it, but it's a working example, and gives you a generic command() method ..... enjoy ......

 

Hello KrakJoe, I need ur help

Could u find me a solution to this problem which is at this mentioned at this post,

http://forums.digitalpoint.com/showthread.php?t=304960

Quick help is needed

 

sorry i forget to say i'm working with linux fedora
i just need to know how to use AT command in linux
at the final i shoud use AT Command in my php application in linux.

 

change COM to /dev/ttsy0 or whatever it is on ur os.....got no linux locally so cant test it, but I know it'll work.......

 

i changed COM to /dev/ttsy0 but fopen cann't do any thing
on it.

Error:
Cannot open ttyS...

i guess that ttyS is not a file like com port in windows.

 

i changed ttyS permission and used your code, but i can't read
from serial port with "fread" or "fputs".

 

That's right, the reason being fgets reads upto a new line properly on serial ports, fread doesn't it waits for data and the port hangs, it might not be ttsy0 that was a guess you need to know your modem device, and should not need to change it's permissions.

COM ports and /dev/ttsy0 is the same thing, definately.