Created
May 31, 2020 11:26
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PHP script for Speakercraft MZC control via 3.5mm control port
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| <?php | |
| //Script to control a SpeakerCraft MZC via the 3.5mm control port | |
| // Requires a Serial/USB to quad 3.5mm adapter, eg | |
| //https://www.aliexpress.com/item/2017184095.html | |
| // Requires php and php-dio module | |
| // Tested working on Windows and Linux | |
| $config = array( | |
| 'com_port' => 11, | |
| 'devtty' => 'ttyUSB0', | |
| 'zones' => array( | |
| 1 => 'Lounge', | |
| 2 => '2', | |
| 3 => '3', | |
| 4 => '4', | |
| 5 => '5', | |
| 6 => 'Master Bedroom', | |
| ), | |
| 'sources' => array( | |
| 1 => 'Lounge Chromecast', | |
| 2 => '2', | |
| 3 => '3', | |
| 4 => '4', | |
| 5 => '5', | |
| 6 => 'Bedroom Chromecast', | |
| ), | |
| 'debug' => false, | |
| ); | |
| if (is_file('./last_info.json')) { | |
| $GLOBALS['last_info'] = (array) @json_decode(file_get_contents('./last_info.json'), true); | |
| } else { | |
| $GLOBALS['last_info'] = array(); | |
| } | |
| if (isset($_REQUEST['getinfo'])) { | |
| header('Content-type: application/json'); | |
| echo json_encode($GLOBALS['last_info']); | |
| return; | |
| } | |
| if (!isset($_REQUEST['connect'])) { | |
| ?><!DOCTYPE html><html><head><title>Speakercraft Control</title><meta name="viewport" content="width=device-width, initial-scale=1"></head><body><h1>Speaker Control</h1><form method="post" action="?set"><table><thead><tr><th>Zone</th><th>Source</th></tr></thead><tbody><?php | |
| foreach($config['zones'] as $zone_id => $zone_name) { | |
| echo '<tr><td>' . htmlentities($zone_name) . '</td><td><select name="connect[' . ((int) $zone_id) . ']"><option value="-1">Off</option>'; | |
| foreach ($config['sources'] as $source_id => $source_label) { | |
| echo '<option value="' . ((int) $source_id) . '"'; | |
| if (($GLOBALS['last_info'][$zone_id - 1]['flags'] & 0x2) && | |
| $GLOBALS['last_info'][$zone_id - 1]['source'] == ($source_id - 1)) { | |
| echo ' selected="selected"'; | |
| } | |
| echo '>' . htmlentities($source_label) . '</option>'; | |
| } | |
| echo '</select></td></tr>'; | |
| } | |
| ?></tbody></table><input type="submit" value="Save" /></form></body></html><?php | |
| return; | |
| } | |
| header('Content-type: text/plain'); | |
| //error_reporting(E_ALL); | |
| //ini_set('display_errors', 1); | |
| //while(@ob_end_clean()); | |
| if ($config['debug']) { | |
| echo str_pad('', 512); flush(); | |
| function debug($out) { | |
| echo $out . "\n"; flush(); | |
| } | |
| } else { | |
| function debug($out) {} | |
| } | |
| $dio_flags = O_RDWR; | |
| if(strcasecmp(substr(PHP_OS, 0, 3), 'WIN') == 0) { | |
| exec('mode com' . ((int) $config['com_port']) . ': baud=57600 data=8 stop=1 parity=n xon=off'); | |
| $device = '\\\\.\COM' . ((int) $config['com_port']); | |
| } else { | |
| exec('stty -F /dev/' . basename($config['devtty']) . ' cs8 -parenb -cstopb -clocal -echo -crtscts raw speed 57600'); | |
| $device = '/dev/' . basename($config['devtty']) . ''; | |
| } | |
| $dio = $stream = dio_open($device, $dio_flags); | |
| if (!$dio) return; | |
| $wait_before_start = false; | |
| if ($wait_before_start) { | |
| sleep(1); | |
| debug('Waiting for first 11'); | |
| $data = ''; | |
| do { | |
| $data .= dio_read($dio); | |
| } while(!$data || $data[strlen($data) - 1] != "\x11"); | |
| debug('Received ' . unpack('H*', $data)[1]); | |
| } | |
| $models = array( | |
| 0x05 => 'MZC-66', | |
| ); | |
| do { | |
| $data = send_command($dio, "\x41"); | |
| } while ($data == '' || $data[0] == "\x55"); | |
| debug("Model is: " . rtrim(substr($data, 4))); | |
| // 12 05 02 33 56 65 72 73 69 6f 6e 20 32 2e 32 2e ...3Version 2.2. | |
| // 05 MZC-66 | |
| // 02 33 - firmware version | |
| // Reset state | |
| // send_command($dio, "\x40"); | |
| if (!empty($_REQUEST['connect'])) { | |
| foreach($_REQUEST['connect'] as $zone => $source) { | |
| if ($source == -1) { | |
| send_command($dio, "\xA1" . chr($zone - 1)); | |
| } else { | |
| connect($dio, $zone, $source); | |
| } | |
| } | |
| } else { | |
| connect($dio, 6, 6); | |
| connect($dio, 1, 1); | |
| } | |
| sleep(1); | |
| $data = send_command($dio, "\x41"); | |
| if (!empty($_REQUEST['connect'])) { | |
| header('Location: ' . basename(__FILE__)); | |
| } | |
| // turn off 0xa1 0xff (all) | |
| // send_command($dio, "\xA1\xFF"); | |
| // turn off zone 1 | |
| // send_command($dio, "\xA1\x00"); | |
| /* | |
| 0x20 - zone status | |
| 0x05 - zone id | |
| 0x00 - reserved | |
| 0x02 - Flags | |
| b0=0/1 – Unmuted/Muted | |
| b1=0/1 – Zone Off/Zone On | |
| b2=0/1 – Normal Mode/Party Mode | |
| b3=0/1 – Not Party Master/Party Master | |
| b4-b7 – reserved | |
| - 0x02 on 0x00 off | |
| 0x05 - source id | |
| 0x3d - volume level 0-100 | |
| 0x00 - bass | |
| 0x00 - treble | |
| 0x18 - actual volume | |
| */ | |
| //55 0b 20 05 00 02 05 3d 00 00 18 1f - zone 6 connected to source 6 | |
| //55 0b 20 05 00 02 04 3d 00 00 18 20 - zone 6 connected to source 5 | |
| //55 0b 20 05 00 00 ff 3d 00 00 18 27 | |
| //55 0b 20 05 00 00 ff 3d 00 00 18 27 | |
| //55 0b 20 05 00 02 03 3d 00 00 18 21 - zone 6 connected to source 4 | |
| function capture_last_info($packet) { | |
| if (preg_match('@(\x55.*?)(\x11|$)@', $packet, $match)) { | |
| $info = $match[1]; | |
| while ($info && $info[0] != "\x11") { | |
| if ($info[0] != "\x55") { | |
| debug('bad info is ' . unpack('H*', $info[0])[1]); | |
| return; | |
| } | |
| $len = ord($info[1]); | |
| $chunk = substr($info, 2, $len - 1); | |
| if ($chunk[0] == "\x20") { // status update | |
| $zoneinfo = unpack('C/Czone/C/Cflags/Csource/Cvolume/Cbass/Ctreble/Cactualvol', $chunk); | |
| $GLOBALS['last_info'][$zoneinfo['zone']] = $zoneinfo; | |
| } | |
| $info = substr($info, $len + 1); | |
| } | |
| file_put_contents('./last_info.json', json_encode($GLOBALS['last_info'])); | |
| } | |
| } | |
| function crc16_arc($data, $raw = true) | |
| { | |
| $crc = 0x0; | |
| for ($pos = 0; $pos < strlen($data); $pos++) | |
| { | |
| $crc ^= ord($data[$pos]); // XOR byte into least sig. byte of crc | |
| for ($i = 8; $i != 0; $i--) { // Loop over each bit | |
| if (($crc & 0x0001) != 0) { // If the LSB is set | |
| $crc >>= 1; // Shift right and XOR 0xA001 | |
| $crc ^= 0xA001; | |
| } else { // Else LSB is not set | |
| $crc >>= 1; // Just shift right | |
| } | |
| } | |
| } | |
| if ($raw) { | |
| return pack('n', $crc); | |
| } | |
| return $crc; | |
| } | |
| function send_command($dio, $command) { | |
| $data = ''; | |
| do { | |
| $data .= dio_read($dio); | |
| $byte = $data ? $data[strlen($data) - 1] : ''; | |
| } while ($byte != "\x11"); | |
| debug("Pre-received " . unpack('H*', $data)[1]); | |
| capture_last_info($data); | |
| if ($command == null) return; | |
| $len = strlen($command); | |
| $data = pack('C', $len + 3) . $command; | |
| $tosend = $data . crc16_arc("\x01" . $data); | |
| debug("Sending 01" . unpack('H*', $tosend)[1]); | |
| dio_write($dio, "\x01" . $tosend, ($len + 3) + 1); | |
| $data = ''; | |
| do { | |
| $data .= dio_read($dio); | |
| $byte = $data ? $data[strlen($data) - 1] : ''; | |
| } while($byte != "\x11"); | |
| debug("Received " . unpack('H*', $data)[1]); | |
| capture_last_info($data); | |
| $data = trim($data, "\x11\x13"); | |
| if ($data && $data[0] == "\x55") return send_command($dio, $command); | |
| return $data; | |
| } | |
| function connect($dio, $zone, $source) { | |
| $data = send_command($dio, "\xa3" . chr($zone - 1) . chr($source - 1)); | |
| } |
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