0
edits
Changes
→Codec 8 Extended
[[Image:Ggg.png|Ggg.png]]
[[Image:Ggg.png|Ggg.png]]
00000000 4 zeros, 4 bytes
0000005F data length, 4 bytes
8E – Codec ID
01- Number of Data (1 record)
1’st record data
0000015FBA40B620– Timestamp in milliseconds (1510658324000)
GMT: Tuesday, November 14, 2017 11:18:44 AM
00 – Priority
GPS Element
0F0DCDE4 – Longitude 252562916 = 25, 2562916º N
20959D30 – Latitude 546676016 = 54,6676016 º E
008A – Altitude 138 meters
0000 – Angle 0º
06 – 6 Visible sattelites
0000 – 0 km/h speed
IO Element
0000 – IO element ID of Event generated (in this case when 0000 – data generated not on event)
0006 – 6 IO elements in record (total)
0001 – 1 IO elements, which length is 1 Byte
00EF – IO element ID = 239 (dec)
00 – IO element’s value
0001 – 1 IO elements, which length is 2 Byte
0011 – IO element ID = 17 (dec )
001E – IO element’s value
0001 – 1 IO elements, which length is 4 Byte
0010 – IO element ID = 16 (dec )
0000CBDF – IO element’s value
0002 – 2 IO elements, which length is 2 Byte
000B – IO element ID = 11 (dec )
000000003544C875 – IO element’s value
000E – IO element ID = 14 (dec )
0000000029BFE4D1 – IO element’s value
01 – Number of Data (1 record)
0000D153 – CRC-16, 4 Bytes (first 2 are always zeros
'''<big>Codec 8 extended protocol sending over UDP</big>'''
*'''AVL data packet'''
AVL data packet is the same as with codec 8, except codec ID is changed to 0x8E.
Example:
Module sends the data:
{| class="wikitable"
|-
!style="background: black; color: white;"| UDP channel header !!style="background: black; color: white;"| AVL packet header !!style="background: black; color: white;"| AVL data array
|-
| Len – 253,
Id – 0xCAFE, Packet type – 01
|| AVL packet id – 0xDD,
IMEI – 1234567890123456
|| Codec Id – 8E, NumberOfData – 02.
(Encoded using continuous bit stream
|-
| 00FDCAFE01 || DD000F3133343536373839303132333435 ||8E02…(data elements)…02
|}
<small>Table 9. Example packet send to server</small>
Server must respond with acknowledgment:
{| class="wikitable"
|-
!style="background: black; color: white;"| UDP channel header!!style="background: black; color: white;"| AVL packet acknowledgment
|-
| Len – 5,
Id – 0xCAFE, Packet type – 01
|| AVL packet id -0xDD
Number of Accepted Data -2
|-
| 0005CAFE01 || DD02
|}
<small>Table 10. Example packet server response</small>
== <big>Codec 12 Nebaigta</big> ==
== <big>Codec 12 Nebaigta</big> ==