function dmx_request_parameters(&$read_buffer)
{
$data = '';
dmx_write(CMD_GET_PARAMETERS, 0, $data);
usleep(5000);
while (dmx_read($read_buffer)) {
}
if ($x = dmx_get_next_packet($read_buffer)) {
if (substr($x, 0, 2) == chr(DMX_START_BYTE) . chr(RX_GET_PARAMETERS)) {
$config['FW_VER'] = sprintf("V%d.%d", ord(substr($x, 5, 1)), ord(substr($x, 4, 1)));
$config['DMX_BR_TIME'] = ord(substr($x, 6, 1));
$config['DMX_MABR_TIME'] = ord(substr($x, 7, 1));
$config['DMX_OUTPUT_RATE'] = ord(substr($x, 8, 1));
$config['CONFIG_DATA'] = substr($x, 9, -2);
return $config;
}
}
return 0;
}
logformat(sprintf("Firmware Version: %s\n", $fw['FW_VER']));
logformat(sprintf("DMX Output Break Time: %s x 10.67 = %.02f us\n", $fw['DMX_BR_TIME'], $fw['DMX_BR_TIME'] * 10.67));
logformat(sprintf("DMX Mark After Break Time: %s x 10.67 = %.02f us\n", $fw['DMX_MABR_TIME'], $fw['DMX_MABR_TIME'] * 10.67));
logformat(sprintf("DMX Output Rate: %s packets/sec\n", $fw['DMX_OUTPUT_RATE']));
logformat(sprintf("DMX Config Data: %s\n", $fw['CONFIG_DATA']));
$dmx_input = bcd_to_chr($dmx_inputs);
$dmx_output1 = bcd_to_chr($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);
}
}
