function dmx_write($cmd, $s, $data)
{
global $debug, $dmx;
$sLSB = $s % 256;
$sMSB = floor($s / 256);
$packet = chr(DMX_START_BYTE) . chr($cmd) . chr($sLSB) . chr($sMSB) . $data . chr(DMX_END_BYTE);
if ($debug) {
printf("Sent: %s\n", hex_display($packet));
}
return fwrite($dmx, $packet);
}
function dmx_write($cmd, $s, &$data)
{
global $debug, $dmx;
$sLSB = $s % 256;
$sMSB = floor($s / 256);
$packet = chr(DMX_START_BYTE) . chr($cmd) . chr($sLSB) . chr($sMSB) . $data . chr(DMX_END_BYTE);
if ($debug & DMX_DEBUG_ID) {
logformat(sprintf("Sent: %s\n", hex_display($packet)));
}
$w = fwrite($dmx, $packet);
fflush($dmx);
return $w;
}
$dmx_output1 = bcd_to_chr($dmx_outputs1);
$dmx_output2 = bcd_to_chr($dmx_outputs2);
dmx_set_levels_U1($dmx_output1);
dmx_set_levels_U2($dmx_output2);
dmx_set_dmx_receive_mode(SEND_ON_CHANGE_ONLY);
while (1) {
if ($must_exit) {
break;
}
if (dmx_read($read_buffer)) {
//got some input from the interface
while ($packet = dmx_get_next_packet($read_buffer)) {
$di = '';
if ($p = dmx_get_dmx_change_data($packet, $dmx_input)) {
if ($debug & DMX_DEBUG_ID) {
logformat(sprintf("DMX Received: %s\n", hex_display($dmx_input)));
}
$di = chr_to_bcd($dmx_input);
dmx_write_shared_memory($shm_id, $di, 0, 0);
//send xap event(s)
for ($i = 0; $i < 128; $i++) {
if (substr($di, $i * 2, 2) != substr($dmx_inputs, $i * 2, 2)) {
send_dmx_input_level_event_message($i, $di);
}
}
$dmx_inputs = $di;
}
}
} else {
$outs1_changed = 0;
$outs2_changed = 0;
