Globalstar ST100 User Manual page 44

8545-0194-01 v1.0
Example Command:
Where:
• Period :
• Payload Byte 0:
• Payload Byte 7:
• Payload Byte 8:
Example Response:
Example Payload:
Where:
See section 4.6: "24 bit location format" for documentation of the encoding/decoding of Globalstar on-air location data.
ST100 User Manual v1
PROPRIETARY TRACK COMMAND FORMAT
BYTE BITS PARAMETER
0 0 - 7 Leader
1 0 - 7 Length
2 0 - 7 Command Code
3-4 0 - 15 Interval
5 0 - 7 Byte 0 value
6 0 - 7 Byte 7 value
7 0 - 7 Byte 8 value
8-9 0 - 15 CRC
00 0A
AA 0A 30 AA BB CC 90 84
0x000A (10 minute intervals)
0xAA
0xBB
0xCC
INITIATE PROPRIETARY TRACK RESPONSE
BYTE BITS PARAMETER
0 0 - 7 Leader
1 0 - 7 Length
2 0 - 7 Command Code
3-4 0 - 15 CRC
AA 05 30 5A F5
0xAA2B4856BFF032BBCC
2B4856
is the 24-bit latitude
BFF032
is the 24-bit longitude
Always a value of 0xAA
0x0A (10 decimal)
0x30 = Initiate proprietary track
Interval in minutes between the track points. 2 to
65535 minutes. (A setting of 2 actually results in
a 2.5 minute interval, any other value results in
an interval of that many minutes).
The value to transmit as byte 0
The value to transmit as byte 7
The value to transmit as byte 8
Always a value of 0xAA
0x5
0x30 = ACK or 0xFF = NAK
30.433051586151 (North)
-90.086817741394 (West)
Confidential & Proprietary Information
DESCRIPTION
DESCRIPTION
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