Ask AI to make it.
Example: (in this case I have a html page to initiate the test).
<?php
// KONFIGURATION - Ret disse til din server
$server_ip = "";
$server_port = 6991;
$imei = "12345678"; //aktiv
// 1. Modtag data fra browseren
$input = json_decode(file_get_contents('php://input'), true);
if (!$input) die("Ingen data modtaget");
$lat = $input\['lat'\];
$lon = $input\['lon'\];
$alt = $input\['alt'\];
$speed = $input\['speed'\];
$angle = $input\['angle'\];
// 2. Forbered binære data (Codec 8 format)
$timestamp = floor(microtime(true) \* 1000); // Millisekunder
// AVL Data start
$avl_data = pack("J", $timestamp); // Timestamp (8 bytes)
$avl_data .= pack("C", 0x00); // Priority (1 byte)
$avl_data .= pack("N", (int)($lon \* 10000000)); // Longitude (4 bytes)
$avl_data .= pack("N", (int)($lat \* 10000000)); // Latitude (4 bytes)
$avl_data .= pack("n", (int)$alt); // Altitude (2 bytes)
$avl_data .= pack("n", (int)$angle); // Angle (2 bytes)
$avl_data .= pack("C", 0x07); // Satellites (1 byte)
$avl_data .= pack("n", (int)$speed); // Speed (2 bytes)
// IO Data (Vi emulerer dine værdier)
$avl_data .= pack("C", 0x00); // Event ID (0 = none)
$avl_data .= pack("C", 0x05); // Total IO Count (5 stk)
// 1-byte IOs (239=Ignition, 240=Movement, 21=GSM)
$avl_data .= pack("C", 3); // Antal 1-byte
$avl_data .= pack("C", 239) . pack("C", 0); // Ignition off
$avl_data .= pack("C", 240) . pack("C", 0); // Movement off
$avl_data .= pack("C", 21) . pack("C", 4); // GSM signal 4
// 2-byte IOs (66=Ext Voltage, 67=Battery)
$avl_data .= pack("C", 2); // Antal 2-byte
$avl_data .= pack("C", 66) . pack("n", 0); // Ext Voltage 0
$avl_data .= pack("C", 67) . pack("n", 3701); // Battery 3.7V
// 4-byte IOs (0 stk)
$avl_data .= pack("C", 0);
// 8-byte IOs (0 stk)
$avl_data .= pack("C", 0);
// Pak hele AVL pakken ind
$full_package = pack("C", 0x08); // Codec ID
$full_package .= pack("C", 0x01); // Record Count
$full_package .= $avl_data;
$full_package .= pack("C", 0x01); // Record Count Again
// Beregn CRC-16 (Teltonika bruger IBM/A001)
function teltonika_crc16($data) {
$crc = 0x0000;
for ($i = 0; $i < strlen($data); $i++) {
$crc ^= ord($data\[$i\]);
for ($j = 0; $j < 8; $j++) {
if ($crc & 0x0001) $crc = ($crc >> 1) ^ 0xA001;
else $crc >>= 1;
}
}
return $crc;
}
$crc = teltonika_crc16($full_package);
$data_len = strlen($full_package);
// Den endelige TCP ramme
$tcp_frame = pack("N", 0x00000000); // Preamble
$tcp_frame .= pack("N", $data_len); // Længde
$tcp_frame .= $full_package;
$tcp_frame .= pack("N", $crc); // CRC (4 bytes i TCP)
// 3. Send til serveren via Socket
$socket = fsockopen($server_ip, $server_port, $errno, $errstr, 5);
if (!$socket) {
die("Kunne ikke forbinde til server: $errstr");
}
// A. Send IMEI
$imei_packet = pack("n", strlen($imei)) . $imei;
fwrite($socket, $imei_packet);
$response = fread($socket, 1);
if (ord($response) !== 0x01) {
die("Server afviste IMEI");
}
// B. Send AVL Data
fwrite($socket, $tcp_frame);
$ack = fread($socket, 4); // Server svarer med 4-byte record count
fclose($socket);
echo "Succes! Server modtog data. ACK: " . bin2hex($ack);