Bonjour
Est-il possible d'envoyer des informations par le port série de l'ordi avec le langage PHP?
Si oui, comment?

mais quel idée de mettre le php a toutes les sauces  ??
 
php, n'est pas prévu pour ca !! prend un autre language...

Je sais mais j'ai déjà un programme sur php, et j'aimerai ne pas changer de langage pour ne pas tous reprogrammer, comprends tu

avec le C c'est facile (merci les tp de l'iut) mais faut connaitre l'adressage sur la cm du port serie
 
tu devrai developer sous c ou autre et integrer dans ta page php

heink ?
 
struct termios...  

Euh c'est bien le port serie du serveur que tu comptes bidouiller ? (je demande on sait jamais )

   
bon c'est sur faut avoir l'adressage et c'est la que ca devient chiant, mais pas impossible a avoir
on a realiser une interface entre une console distante et le pc qui permettait de diriger un processus industriel  

J'aimerais programmer un analyseur de spectre relier par la connexion RS232 à l'ordi, voilà ce que j'aimerai réaliser

php n'est pas un langage approprié dans ce cas...
 
NOTE:

 
www.phpfreaks.com/quickcode.php
<?
/*
 * PHP Freaks Code Library
 * http://www.phpfreaks.com/quickcode.php
 *
 * Title: Serial port comms with PHP CLI (Windows or DOS)
 * Version: 1.0
 * Author: Tony Frame
 * Date: Sunday, 05/11/2003 - 04:27 AM
 *
 *  
 *
 * NOTICE: This code is available from PHPFreaks.com code Library.
 *         This code is not Copyrighted by PHP Freaks.  
 *
 *         PHP Freaks does not claim authorship of this code.
 *
 *         This code was submitted to our website by a user.  
 *
 *         The user may or may not claim authorship of this code.
 *
 *         If there are any questions about the origin of this code,
 *         please contact the person who submitted it, not PHPFreaks.com!
 *
 *         USE THIS CODE AT YOUR OWN RISK! NO GUARANTEES ARE GIVEN!
 *
 * SHAMELESS PLUG: Need WebHosting? Checkout WebHost Freaks:
 *                 http://www.webhostfreaks.com
 *                 WebHosting by PHP Freaks / The Web Freaks!
*/
 
 
// *    Description / Example:
// *    
// *    Full PHP CLI script to open COM1 or COM2 on Windows and retrieve readings from a digital dial gauge. The data are logged to *.csv file on the local disk and also inserted into a remote (could be local) MySQL database. On startup the script checks for existance of the database and appropriate table - if not found it creates the database and table (as long as it has appropriate priviledges set in the MySQL server).
// *    
// *    The script has been succesfully run on Windows 2K and XP systems where it is started by the Task Scheduler at 12:00 am (ie midnight) every day.
 
?>
 
<?php  
//==============================================================================
// mitutoyo.php - version 1.00 dated 3 May 2003
//
// php 4.3.2rc1 script to read data from a Mitutoyo digital dial gauge, log  
// <time, reading, status> triples to a local ASCII CSV format log file and  
// insert same into a MySQL database server.
//
//==============================================================================
 
//------------------------------------------------------------------------------
// function to set DOS com port parameters.  
// Does sanity check on parity and numerical parameters and then calls the  
// DOS MODE function to set the parameters. The output from the MODE command is
// echoed to the local console. If the MODE command is not successful the  
// script exits.
//------------------------------------------------------------------------------
function set_com($com_no, $baud, $parity, $data, $stop) {
 
//
// check com port number is either 1 or 2
//
  switch ($com_no) {
    case 1 :
      $port_name = "COM1:";
      break;
    case 2 :
      $port_name = "COM2:";
      break;
    default :
      echo("Error : a COM port number of ".$com_no." is not allowed. Allowed range is [1,2]\n" );
      exit;
  }
 
//
// check baud rate
//
  if (($baud < 1200) or ($baud > 9600 )) {
      echo("Error : a baud rate of ".$baud." is not allowed. Allowed range is [1200,9600]\n" );
      exit;
  }
 
//      
// check parity
//  
  switch ($parity) {
    case "EVEN" :
    case "eVEN" :
    case "Even" :
    case "even" :
    case "E" :
    case "e" :
      $parity = "E";
      break;
    case "ODD" :
    case "oDD" :
    case "Odd" :
    case "odd" :
    case "O" :
    case "o" :
      $parity = "O";
      break;
    case "NONE" :
    case "nONE" :
    case "None" :
    case "none" :
    case "N" :
    case "n" :
      $parity = "N";
      break;
    default :
      echo("Error : a parity of ".$parity." is not allowed. Allowed settings are [EVEN, ODD, NONE]\n" );
      exit;
  }
 
//
// check data bits is either 7 or 8
//
  switch ($data) {
    case 7 :
    case 8 :
      break;
    default :
      echo("Error : a data bits value of ".$data." is not allowed. Allowed range is [7,8]\n" );
      exit;
  }
 
//
// check stop bits is either 0 or 1
//
  switch ($stop) {
    case 0 :
    case 1 :
      break;
    default :
      echo("Error : a stop bits value of ".$stop." is not allowed. Allowed range is [0,1]\n" );
      exit;
  }
 
//
// use DOS mode command to set com port parameters
//
  $cmd_str = "MODE $port_name BAUD=$baud PARITY=$parity DATA=$data STOP=$stop TO=ON OCTS=ON ODSR=OFF IDSR=OFF RTS=HS DTR=ON";
  echo("\nRunning DOS command : \n  $cmd_str ....\n" );
  $output = array();
  exec($cmd_str, $output, $result);
  echo("\nOutput is : \n\n" );
  print_r($output);
 
//
// check exit status from MODE command
//
  switch ($result) {
    case 0 :
      echo("\nCOM port parameters set successfully.\n" );
      break;
    default :
      echo("\nError while trying to set COM port parameters - exiting.\n" );
      exit;
  }
}
//------------------------------------------------------------------------------
 
//------------------------------------------------------------------------------
// Function to open console as a binary input file, echo a prompt and read
// the input which must be terminated by a [CR][LF] ie press the [ENTER] key.
// The [CR][LF] sequence is stripped from the input that is returned to the  
// calling script.
//------------------------------------------------------------------------------
function read($prompt) {  
 
//
// open DOS CON device ie console, display prompt and read input
//  
  $fp=fopen("con", "rb" );
  echo("\n$prompt" );
  $input=fgets($fp, 255);  
  fclose($fp);  
  return str_replace("\r\n", "", $input);  
}
//------------------------------------------------------------------------------
 
//------------------------------------------------------------------------------
// main segment.
// Sets initial values, configures and opens DOS com port, opens local log file,
// connects to database server and then starts the data acquisition (DAQ). The
// time stamped gauge reading and status data are written to the log file and
// inserted into the database. After completion of the DAQ, the com port, log
// file and database connections are closed.  
//------------------------------------------------------------------------------
 
//define("DEBUG", TRUE);
define("DEBUG", FALSE);
$com_no = 1;
$baud = 2400;
$parity = "N";
$data_bits = 8;
$stop_bits = 1;
$log_file_name = "_rdg.csv";
$db_server_address = "localhost";
//$db_server_address = "10.1.34.64;
$db_name = "tko_geomon";
$db_username = "tko_geomon";
$db_password = "";
$table_name = "mitutoyo_gauge";
$gauge_id = 1;
$start_time = 0; // ie any time after midnight
$end_time = 86100; // ie 5 minutes before midnight
//$end_time = 9100;
 
//
// configure and open serial port
//
set_com($com_no, $baud, $parity, $data_bits, $stop_bits);  
echo("\nTrying to open serial port COM$com_no ... \n" );
$serial_port = fopen("COM$com_no", "w+b" );
if ($serial_port) {
  echo("\nSuccessfully opened serial port COM$com_no.\n" );
}
else {
  echo("\nError while trying to open serial port COM$com_no - exiting.\n" );
  exit;
}
 
//
// open log file
//
$log_file_name = time().$log_file_name;
echo("\nTrying to open log file $log_file_name ... \n" );
$log_file = fopen("$log_file_name", "wb" );
if ($log_file) {
  echo("\nSuccessfully opened log file $log_file_name.\n" );
}
else {
  echo("\nError while trying to open log file $log_file_name - exiting.\n" );
  exit;
}
 
//
// open connection to database server
//
echo("\nTrying to connect to database server at $db_server_address\n   with [username]:[password] = [$db_username]:[$db_password]\n" );  
$db = mysql_connect($db_server_address, $db_username, $db_password)
      or die("\nError : " . mysql_error()."\n" );
echo("\nConnected successfully to database server.\n" );
 
//
// select database in the database server
//
echo("\nTrying to select database $db_name ...\n" );  
if (!mysql_select_db($db_name, $db)) {
  echo("\nError : " . mysql_error()."\n" );
  echo("\nTrying to create database $db_name ...\n" );
  if (!mysql_query("CREATE DATABASE $db_name", $db)) {
    echo("\nError : " . mysql_error()."\n" );
    echo("\nError trying to create database $db_name. Giving up!\n" );
    exit;
  }
  else {
    echo("\nSuccessfully created database.\n" );
    echo("\nRe-trying to select database $db_name\n" );  
    if (!mysql_select_db($db_name, $db)) {
      echo("\nError : " . mysql_error()."\n" );
      echo("\nError trying to select database $db_name. Giving up!\n" );
      exit;
    }
  }
}
echo("\nSuccessfully selected database.\n" );
 
//
// check tables in the database
//
echo("\nChecking database structure ...\n" );
$table_list = mysql_list_tables($db_name, $db);
if (!$table_list) {
  echo("\nError : " . mysql_error()."\n" );
  exit;
}
else {
  if (mysql_num_rows($table_list) < 1) {
    echo("\nNo tables found in database $db_name.\n\nCreating new table $table_name ...\n" );
    if (!mysql_query("CREATE TABLE $table_name (
                        id smallint(5) unsigned NOT NULL,  
                        rdg_time datetime NOT NULL,  
                        rdg_data float(10,3) default NULL,  
                        rdg_status varchar(10) default NULL,  
                        PRIMARY KEY  (id, rdg_time)
                      ) TYPE=MyISAM COMMENT='Mitutoyo digital dial gauge data'", $db)) {
      echo("\nError : " . mysql_error()."\n" );
      echo("\nError trying to create table. Giving up!\n" );
      exit;
    }
    else {
       echo("\nSuccessfully created table.\n" );
    }
  }
  else {
    $i = 0;
    while ( ($i < mysql_num_rows($table_list)) and (mysql_tablename($table_list, $i) != $table_name) ) {
      $i = $i + 1;
    }
    if ($i < mysql_num_rows($table_list)) {
      if (mysql_tablename($table_list, $i) == $table_name) {
        echo("\nFound table $table_name.\n" );
      }
      else {
        echo("\nDatabase contains tables but not $table_name. Exiting.\n" );
        exit;
      }
    }
    else {
      echo("\nDatabase contains tables but not $table_name. Exiting.\n" );
      exit;
    }
  }
}
 
//
// read data from gauge, write to log file and insert into database
//
echo("\nStarting data aquisition ...\n\n" );
$last_time = time();
$time_array = localtime(time());
$elapsed_time = $time_array[0] + 60*($time_array[1] + 60*$time_array[2]);
 
while (($elapsed_time > $start_time) and ($elapsed_time < $end_time)) {  
//for ($ctr = 1; $ctr <= 3; $ctr++) {
   
  $time_array = localtime(time());
  $elapsed_time = $time_array[0] + 60*($time_array[1] + 60*$time_array[2]);
 
  // busy wait until at least 1s elapsed
  while (time() == $last_time) ;
  $last_time = time();
  if (DEBUG) {
    echo("\nTrying to write to serial port COM$com_no... \n" );
  }
  $result = fwrite($serial_port, "1" );
  fflush($serial_port);
  if ($result) {
    if (DEBUG) {
      echo("\nSuccessfully wrote $result bytes to serial port COM$com_no.\n" );
    }
  }
  else {
    echo("\nError while trying to write to serial port COM$com_no.\n" );
  }
  if (DEBUG) {
    echo("\nTrying to read from serial port COM$com_no... \n" );
  }
  $data = NULL;
  $status = str_replace(array("\r", "\n" ), array('', ''), fgets($serial_port, 4));
  $rdg_time = date("Y-m-d H:i:s" );
  if ($status <> "01A" ) {
    echo("Error in reading data. Code = $status.\n" );
  }
  else {
    $data = str_replace(array("\r", "\n" ), array('', ''),fgets($serial_port, 11));
    echo("$rdg_time $elapsed_time $data\n" );
  }
  fwrite($log_file, $rdg_time.", $data, $status\n" );
  fflush($log_file);
  $sql = "INSERT IGNORE INTO $table_name (id, rdg_time, rdg_data, rdg_status) VALUES ('$gauge_id', '$rdg_time', '$data', '$status')";
  if (DEBUG) {
    echo("\nSQL query is [$sql].\n" );
  }
  if (!mysql_query($sql, $db)) {
    echo("\nError : " . mysql_error()."\n" );
  }
}
echo("\nCompleted data aquisition.\n" );
 
//
// close serial port
//
echo("\nTrying to close serial port COM$com_no ... \n" );
$result = fclose($serial_port);
if ($result) {
  echo("\nSuccessfully closed serial port COM$com_no.\n" );
}
else {
  echo("\nError while trying to close serial port COM$com_no.\n" );
}
 
//
// close log file
//
echo("\nTrying to close log file $log_file_name ... \n" );
$result = fclose($log_file);
if ($result) {
  echo("\nSuccessfully closed log file $log_file_name.\n" );
}
else {
  echo("\nError while trying to close log file $log_file_name.\n" );
}
 
//
// close database connection
//
echo("\nTrying to close connection to database server at $db_server_address ... \n" );
$result = mysql_close($db);
if ($result) {
  echo("\nSuccessfully closed connection to database server at $db_server_address.\n" );
}
else {
  echo("\nError while trying to close connection to database server at $db_server_address.\n" );
}
 
//
// dummy read to prevent console screen closing before user has time to read messages
// only used during development / debugging - use in conjunction with for loop at line 288
// instead of while loop at line 287 in the read data section above
//
//$dump = read("Press [Enter] to continue ... " );  
//------------------------------------------------------------------------------
 
?>

On peut donc "tout" faire avec php

Oui mais c'est legerement de la triche la , on utilise php juste pour lancer un programme C/des commandes shell