<?php

// echo chr(10);

include "PHP-Serial/src/PhpSerial.php";

exec("mode COM8 BAUD=57600 PARITY=N data=8 stop=1 xon=off");

$serial = new phpSerial();

$serial->deviceSet("COM8");

$serial->confBaudRate(57600);       //Baud rate: 9600
$serial->confParity("none");            //Parity (this is the "N" in "8-N-1")
$serial->confCharacterLength(8);        //Character length     (this is the "8" in "8-N-1")
$serial->confStopBits(1);               //Stop bits (this is the "1" in "8-N-1")
$serial->confFlowControl("none");

$serial->deviceOpen();
sleep(3);

if (ob_get_level() == 0) ob_start();            //Inicia o Buffer

$read = $serial->readPort();
echo "<pre>".$read."</pre>";

ob_flush();                         //Start Buffer
flush();                                //Send Buff

$gcode[] = "G0x50.0\n";
$gcode[] = "G0x40.0\n";
$gcode[] = "G0x50.3\n";

foreach ($gcode as $line) {
    echo "Enviado: " . $line . "</br>";
    $serial->sendMessage($line);

    $read = $serial->readPort();
    echo "Recebido: <pre>" . $read . "</pre>";

    ob_flush();
    flush();

    if(!$read == "ok"){
        $serial->deviceClose();
        die($read);
    }
}