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ELM327 OBD-II class for vehicle self-diagnostics, written in PHP
ELM327 OBD-II class for vehicle self-diagnostics, written in PHP, (*1)
To install using Composer, add "mdlayher/obd": "dev-master" to the require section of your composer.json., (*2)
Connect an ELM327 OBD-II device using serial interface, and point the class at its device file location. Optionally, a baud rate, preferred unit system, and verbosity may be specified., (*3)
<?php
// obd demo
require_once __DIR__ . "/vendor/autoload.php";
use \obd\obd as obd;
// Open serial connection
$obd = new obd("/dev/pts/1", obd::BAUD_FAST);
$obd->connect();
// Run a few basic commands
$commands = array("AT I", "AT RV", "AT DP");
printf("Basic commands:\n");
foreach ($commands as $c)
{
printf("\t%s -> %s\n", $c, $obd->command($c));
}
// Call all parameter ID (PID) functions using English units
printf("English:\n");
foreach ($obd->pid as $key => $p)
{
printf("\t%s: %s\n", $key, $p());
}
// Switch to Metric and call a few functions
$obd->set_units(obd::UNIT_METRIC);
printf("Metric:\n");
printf("\tfuel_pressure: %s\n", $obd->pid['fuel_pressure']());
printf("\tspeed: %s\n", $obd->pid['speed']());
ELM327 OBD-II class for vehicle self-diagnostics, written in PHP
MIT
obd obd-ii elm327