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==Device Info Packet Structure==
==Device Info Packet Structure==
{| class="wikitable"
{| class="wikitable sortable"
! Field
! Size (bits)
! Bit Range
! Description
! Breakdown
|-
|-
! colspan="5" style="background:#D3D3D3;" | Header Info Bytes
! colspan="5" style="background:#D3D3D3;" | Header (10 Bytes)
|-
|-
! Field !! Size (bits) !! Bit Range !! Description !! Breakdown
| Start byte
| 8
| 0–7
| Starting character $ (ASCII value 36)
|
 
|-
|-
| Start Character || 8 || 0–7 || Starting character $ (ASCII value 36) || $
| Data length
| 12
| 08–19
| 2-byte length of the data following the header
|  
 
|-
|-
| Length || 12 || 8–18 || 2-byte length of the data following the header ||  
| Number of data packets
| 5
| 20–24
| Number of packets (0–32)
| 0–32
 
|-
|-
| No of Packets || 5 || 19–23 || NO of data Packets (always 1 with device info) ||  
| IMEI
| 50
| 25–74
| Unique device identifier
|  
 
|-
|-
| IMEI || 50 || 24–74 || Unique device identifier ||  
| Packet type
| 5
| 75–79
| Type of packet
| 00 - Device Info
 
|-
|-
| Packet Type || 5 || 75–79 || Integer type:  
! colspan="5" style="background:#D3D3D3;" | Data
* 00 - Device info Packet 
* 01 - Alert Packet 
* 02 - OTA Packet 
* 03 - Error Packet 
* 04 - Device configuration Packet 
* 05 - IP configuration Packet ||  
|-
|-
! 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
 
|-
|-
| Time || 32 || — || UTC Timestamp (UTC time in seconds) ||  
| CELLULAR_MODULE_FV NAME
| 40
|  
| 5 Bytes, Character string
| TSPJT
 
|-
|-
| Time Zone || 8 || — ||
| CELLULAR_MODULE_FV VERSION
Timezone in quarter hours (e.g., 22 = +5:30). 
| 80
Each unit = 15 minutes. 
|  
Value 22 = 22 × 15 min.
| 10 Bytes, Character string
Range: -48 to 56.
| XX.YY.ZZZZ
Negative timezone in 2's complement. ||
 
|-
|-
| ICCID || 160 || — || 20 Bytes, Character string || 8991000903297069053F
| CELLULAR_MODULE_FV BUILD NO
| 40
|  
| 5 Bytes, Character string
| YYDDD
 
|-
|-
| VID || 32 || — || 4 Bytes, Character string || TRAN
| MCU_APP_MODULE_FV NAME
| 40
|  
| 5 Bytes, Character string
| TSPJT
 
|-
|-
| CELLULAR_MODULE_FV NAME || 40 || — || 5 Bytes, Character string || TSPJT
| MCU_APP_MODULE_FV VERSION
| 80
|  
| 10 Bytes, Character string
| XX.YY.ZZZZ
 
|-
|-
| CELLULAR_MODULE_FV VERSION || 80 || — || 10 Bytes, Character string || XX.YY.ZZZZ
| MCU_APP_MODULE_FV BUILD NO
| 40
|  
| 5 Bytes, Character string
| YYDDD
 
|-
|-
| MCU_APP_MODULE_FV NAME || 40 || — || 5 Bytes, Character string || TSPJT
| MCU_BTL_MODULE_FV NAME
| 40
|  
| 5 Bytes, Character string
| TSPJT
 
|-
|-
| MCU_APP_MODULE_FV VERSION || 80 || — || 10 Bytes, Character string || XX.YY.ZZZZ
| MCU_BTL_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 BUILD NO
| 40
|  
| 5 Bytes, Character string
| YYDDD
 
|-
|-
| VN || 80 || — || 10 Bytes, Character string || KL07CP8490
| VN
| 80
|  
| 10 Bytes, Character string
| KL07CP8490
 
|-
|-
| HWINFO || 88 || — || 11 Bytes, Character string || PCB-0220-AB
| HWINFO
| 88
|  
| 11 Bytes, Character string
| PCB-0220-AB
 
|-
|-
! colspan="5" style="background:#D3D3D3;" | Tail Info (2 Bytes)
! colspan="5" style="background:#D3D3D3;" | Tail(2 Bytes)
|-
|-
| End Character || 8 || 0–7 || Starting character * (ASCII value 42) || *
| End Character
| 8
| 0–7
| Starting character * (ASCII value 42)
|  
 
|-
|-
| CRC || 8 || 8–15 || 8-bit XOR CRC of data from $ to * (excluding $ and *) ||
| CRC
| 8
| 8–15
| 8-bit XOR CRC of data starting from $ to * (excluding $ and *)
|  
 
|}
|}


==Sample Packet==
==Sample Packet==

Revision as of 07:08, 17 June 2025

Device Info Packet Structure

Field Size (bits) Bit Range Description Breakdown
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
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
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

{"HEX":"2406e0e1cabd09208ca06822dac31638393931393530393132393633373932393632

0000000000545344324720322e20302e202020312020202030545344324e20312e20312e2020
20313235303935545344324220302e20302e2020203020202020305e0100005e0100005e0150

43422d303232302d41422a1c","cmfv_build":"0","cmfv_name":"TSD2G","cmfv_version":"2. 0. 1","dateTime":1747114691,"dateTime_tz":"2025-05-13 11:08:11.000","hwinfo_build":"PCB-0220-AB","iccid":"8991950912963792962\u0000","imei":860187062240357,"insert_time":"Tue, 13 May 202505:38:15GMT","mcua_build":"25095","mcua_name":"TSD2N","mcua_version":"1. 1.1","mcub_build":"0","mcub_name":"TSD2B","mcub_version":"0.0.0","packetType":0, "send_time":"2025-05-1311:08:11","timezone":22,"vid":"\u0000\u0000\u0000\u0000", "vn":"^\u0001\u0000\u0000^\u0001\u0000\u0000^\u0001"}

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