public function getSerial()
{
if (!isset(self::$_serial)) {
$this->displayDebug('Création de l\'interface série sur le port : ' . $this->getConfiguration('port'));
$serial = new phpSerial();
$serial->deviceSet($this->getConfiguration('port'));
$serial->confBaudRate(9600);
$serial->confParity('none');
$serial->confStopBits(1);
$serial->confCharacterLength(8);
$serial->confFlowControl('none');
$serial->sendParameters("-ignbrk -hupcl -onlcr -echo -echok -echoctl -echoke");
$serial->setValidOutputs(array('OK', 'ERROR', '+CPIN: SIM PIN', '+CPIN: READY', '>', 'COMMAND NOT SUPPORT', '+CMS ERROR: 305'));
self::$_serial = $serial;
$this->cleanDevice();
}
return self::$_serial;
}