View source for Device Info Packet

{| class="wikitable"
! style="background-color:#680022; color:white;" | Field
! style="background-color:#680022; color:white;" | Size (bits)
! style="background-color:#680022; color:white;" | Bit Range
! style="background-color:#680022; color:white;" | Description
! style="background-color:#680022; color:white;" | Breakdown
|-
! colspan="5" style="background:#D3D3D3;" | Header (10 Bytes)
|-
| Start byte
| 8
| 0–7
| Starting character $ (ASCII value 36)
| 

|-
| Data length
| 12
| 08–19
| 2-byte length of the data following the header
| 

|-
| Number of data packets
| 5
| 20–24
| Number of packets (0–32)
| 0–32

|-
| IMEI
| 50
| 25–74
| Unique device identifier
| 

|-
| Packet type
| 5
| 75–79
| Type of packet
| 00 - Device Info

|-
! colspan="5" style="background:#D3D3D3;" | Data
|-
| Time
| 32
| 
| UTC Timestamp
| UTC time in seconds

|-
| Time Zone
| 8
| 
| Timezone in quarter-hours (e.g., 22 = +5:30), quarter-hour increment means each unit represents 15 minutes. The value 22 represents 22 quarter hours. Ranges from -48 to 56, negative timezone to 2's complement representation
| eg: 22 (+5:30) → 22×15=330 minutes → 330÷60=5.5 hours → 5 hours and 30 minutes

|-
| ICCID
| 160
| 
| 20 Bytes, Character string
| 8991000903297069053F

|-
| VID
| 32
| 
| 4 Bytes, Character string
| TRAN

|-
| CELLULAR_MODULE_FV NAME
| 40
| 
| 5 Bytes, Character string
| TSPJT

|-
| CELLULAR_MODULE_FV VERSION
| 80
| 
| 10 Bytes, Character string
| XX.YY.ZZZZ

|-
| CELLULAR_MODULE_FV BUILD NO
| 40
| 
| 5 Bytes, Character string
| YYDDD

|-
| MCU_APP_MODULE_FV NAME
| 40
| 
| 5 Bytes, Character string
| TSPJT

|-
| MCU_APP_MODULE_FV VERSION
| 80
| 
| 10 Bytes, Character string
| XX.YY.ZZZZ

|-
| MCU_APP_MODULE_FV BUILD NO
| 40
| 
| 5 Bytes, Character string
| YYDDD

|-
| MCU_BTL_MODULE_FV NAME
| 40
| 
| 5 Bytes, Character string
| TSPJT

|-
| MCU_BTL_MODULE_FV VERSION
| 80
| 
| 10 Bytes, Character string
| XX.YY.ZZZZ

|-
| MCU_BTL_MODULE_FV BUILD NO
| 40
| 
| 5 Bytes, Character string
| YYDDD

|-
| VN
| 80
| 
| 10 Bytes, Character string
| KL07CP8490

|-
| HWINFO
| 88
| 
| 11 Bytes, Character string
| PCB-0220-AB

|-
! colspan="5" style="background:#D3D3D3;" | Tail(2 Bytes)
|-
| End Character
| 8
| 0–7
| Starting character * (ASCII value 42)
| 

|-
| CRC
| 8
| 8–15
| 8-bit XOR CRC of data starting from $ to * (excluding $ and *)
| 

|}


==Sample Packet==

<pre>
HEX : "2406e0e21aeb7abfd58068778b681638393931393530393132393633373932393833355452414e545344344720332e20302e202020342020202030545344345220332e20302e202020332020202030545344524220332e20302e202020312020202030585858585858585858585043422d303236312d41412ab9"
{"imei": 862942074896044, 
"packet_type": 0, "no_packets": 1, "dateTime": 1752664936, "timezone": 22, "dateTime_tz": "2025-07-16 16:52:16", "iccid": "89919509129637929835", "vid": "TRAN", "cmfv_name": "TSD4G", "cmfv_version": " 3. 0. 4", "cmfv_build": " 0", "mcua_name": "TSD4R", "mcua_version": " 3. 0. 3", "mcua_build": " 0", "mcub_name": "TSDRB", "mcub_version": " 3. 0. 1", "mcub_build": " 0", "vn": "XXXXXXXXXX", "hwinfo_build": "PCB-0261-AA", "error_code": 0, "raw_data": }
</pre>                                                                                              

<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Device Info Packet Parser</title>
  <style>
    body { font-family: Arial, sans-serif; }
    textarea {
      width: 100%; height: 100px; font-family: monospace;
    }
    button {
      padding: 10px 20px;
      border-radius: 20px;
      margin-top: 10px;
      font-weight: bold;
      background-color: #680022;
      color: white;
      border: none;
      cursor: pointer;
    }
    button:hover {
      background-color: #4c0019;
    }
    table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 20px;
    }
    th, td {
      border: 1px solid #ccc;
      padding: 8px;
      text-align: left;
    }
    th {
      background-color: #680022;
      color: white;
    }
  </style>
</head>
<body>

<h2>Device Info Packet Parser</h2>
<textarea id="hexInput" placeholder="Paste Device Info Packet here..."></textarea><br>
<button onclick="parseDeviceInfo()">Parse Packet</button>

<h3>Parsed Output:</h3>
<table id="resultTable">
  <thead><tr><th>Field</th><th>Value</th></tr></thead>
  <tbody></tbody>
</table>

<script>
function hexToBits(hex) {
  return hex.match(/.{1,2}/g).map(b => parseInt(b, 16).toString(2).padStart(8, '0')).join('');
}
function bitsToInt(bits) {
  return parseInt(bits, 2);
}
function bitsToSignedInt(bits) {
  const val = parseInt(bits, 2);
  return val >= 2 ** (bits.length - 1) ? val - 2 ** bits.length : val;
}
function bitsToAscii(bits) {
  return bits.match(/.{1,8}/g).map(b => String.fromCharCode(parseInt(b, 2))).join('').replace(/\0/g, '');
}
function bigIntFromBits(bits) {
  return BigInt('0b' + bits).toString();
}

function parseDeviceInfo() {
  const hex = document.getElementById("hexInput").value.trim().toLowerCase();
  const resultBody = document.querySelector("#resultTable tbody");
  resultBody.innerHTML = "";

  if (!hex || !hex.startsWith("24")) {
    alert("Invalid packet! Must start with 24 (hex for $)");
    return;
  }

  const bits = hexToBits(hex);
  const output = (label, value) => {
    const row = document.createElement("tr");
    row.innerHTML = `<td>${label}</td><td>${value}</td>`;
    resultBody.appendChild(row);
  };

  const fields = [
    ["Start Character", 0, 8],
    ["Length", 8, 20],
    ["No of Packets", 20, 25],
    ["IMEI", 25, 75],
    ["Packet Type", 75, 80],
    ["Time", 80, 112],
    ["Time Zone", 112, 119],
    ["ICCID", 120, 279],
    ["VID", 280, 311],
    ["CELLULAR_MODULE_FV NAME", 312, 351],
    ["CELLULAR_MODULE_FV VERSION", 352, 431],
    ["CELLULAR_MODULE_FV BUILD NO", 432, 471],
    ["MCU_APP_MODULE_FV NAME", 472, 511],
    ["MCU_APP_MODULE_FV VERSION", 512, 591],
    ["MCU_APP_MODULE_FV BUILD NO", 592, 631],
    ["MCU_BTL_MODULE_FV NAME", 632, 671],
    ["MCU_BTL_MODULE_FV VERSION", 672, 751],
    ["MCU_BTL_MODULE_FV BUILD NO", 752, 791],
    ["VN", 792, 871],
    ["HWINFO", 872, 959],
    ["End Character", 960, 968],
    ["CRC", 968, 976]
  ];

  for (const [label, start, end] of fields) {
    const val = bits.slice(start, end);
    switch (label) {
      case "IMEI":
        output(label, bigIntFromBits(val));
        break;
      case "Time":
        const timestamp = bitsToInt(val);
        output(label, new Date(timestamp * 1000).toISOString());
        break;
      case "Time Zone":
        const tz = bitsToSignedInt(val);
        const mins = tz * 15;
        const sign = mins >= 0 ? "+" : "-";
        const h = Math.floor(Math.abs(mins) / 60);
        const m = Math.abs(mins % 60);
        output("Time Zone", `${mins} mins (UTC${sign}${h}:${m.toString().padStart(2, '0')})`);
        break;
      case "ICCID":
      case "VID":
      case "CELLULAR_MODULE_FV NAME":
      case "CELLULAR_MODULE_FV VERSION":
      case "CELLULAR_MODULE_FV BUILD NO":
      case "MCU_APP_MODULE_FV NAME":
      case "MCU_APP_MODULE_FV VERSION":
      case "MCU_APP_MODULE_FV BUILD NO":
      case "MCU_BTL_MODULE_FV NAME":
      case "MCU_BTL_MODULE_FV VERSION":
      case "MCU_BTL_MODULE_FV BUILD NO":
      case "VN":
      case "HWINFO":
        output(label, bitsToAscii(val).trim());
        break;
      case "Start Character":
      case "End Character":
        output(label, String.fromCharCode(bitsToInt(val)));
        break;
      case "CRC":
        output(label, bitsToInt(val).toString(16).toUpperCase().padStart(2, '0'));
        break;
      default:
        output(label, bitsToInt(val));
    }
  }
}
</script>

</body>
</html>