<?php
$fd = dio_open('/dev/ttyS0', O_RDWR | O_NOCTTY | O_NONBLOCK);
dio_fcntl($fd, F_SETFL, O_SYNC);
dio_tcsetattr($fd, array(
'baud' => 9600,
'bits' => 8,
'stop' => 1,
'parity' => 0
));
while (1) {
$data = dio_read($fd, 256);
if ($data) {
echo $data;
}
}
?>