require 'raspi/Diode.php';
//scan card
$buzzer = new Buzzer();
$buzzer->buzzStop();
$diode = new Diode();
$diode->off();
while (true) {
echo "Wait for card...\n";
do {
$uid = getNfcUID();
} while ($uid == NULL);
echo "Insert {$uid} card\n";
$newCard = new stdClass();
$newCard->cardid = $uid;
addCard($newCard);
$buzzer->buzzStart();
$diode->on();
sleep(1);
$buzzer->buzzStop();
echo "Remember take card back...\n";
while ($uid != NULL && getNfcUID() == $uid) {
}
$diode->off();
}
function getNfcUID()
{
sleep(1);
try {
$match = [];
$lsnfc = shell_exec('sudo lsnfc');
if (preg_match('/UID\\=[a-zA-Z0-9]*/', $lsnfc, $match)) {
