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5.2.1 Serial Packet Format
Preamble
Length
Command
Data
CRC
5.2.2 STX3 Legacy Serial Packet Commands
Serial Packet Commands
For all serial packet commands as described below:
AA is the Preamble.
•
NN is the Length.
•
XX is an unspecified byte value
•
CLSB is the least significant CRC byte
•
CMSB is the most significant CRC byte
•
If an improperly formatted command is received, the
operly formatted command is received, the STINGR will return a NAK response:
•
5.2.2.1 Send Data (0x00)
The Send Data command requests the STINGR
0x00
Leader
AA
Example Command:
AA 0E 00
Response:
AA 05 00 D9 C4
The example above commands the STINGR
the STINGR receives a properly formatted Send Data command, it returns an acknowledge response as shown above. If
receives a properly formatted Send Data command, it returns an acknowledge response as shown above. If
receives a properly formatted Send Data command, it returns an acknowledge response as shown above. If
the command is not properly formatted, it will return the NAK response AA 05 FF A1 CB.
the command is not properly formatted, it will return the NAK response
Revision 0.2
06/24/15
Revision 0.2
Revision 0.2
Fixed pattern 0xAA
Fixed pattern 0xAA
Total number of bytes in the serial packet including the preamble
Total number of bytes in the serial packet including the preamble
Total number of bytes in the serial packet including the preamble
Command type (See Table 5 Serial Packet Type). Responses to
Command type (See Table 5 Serial Packet Type). Responses to
Command type (See Table 5 Serial Packet Type). Responses to
commands carry the same command type as the command that
commands carry the same command type as the command that
commands carry the same command type as the command that
initiated the answer
initiated the answer
Data associated with the command or answer
Data associated with the command or answer
16 bit CRC
16 bit CRC
Figure 7 Serial Packet Format
as described below:
byte
byte
STINGR to send from 1 to 144 data bytes over the Globalstar Simplex network.
to send from 1 to 144 data bytes over the Globalstar Simplex network.
payload
Len
cmd
1
XX
NN
00
01 02 03 04 05 06 07 08 09
01 02 03 04 05 06 07 08 09
to send 9 bytes of
Subject To Change without Notice
Subject To Change without Notice
STINGR Users Manual
will return a NAK response:
AA 05 FF A1 CB
payload
payload
2
3
XX
XX
BE E8
user defined data
payload
payload
..
N
CRC1
XX
XX
CLSB
over the Globalstar Simplex network.
he Globalstar Simplex network. If
P a g e
P a g e
| 17
CRC2
CMSB
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