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MN002000A © 2004 Navman NZ Ltd. All rights reserved. Proprietary information and specifications subject to change without notice.
3.5.1.17 Message 1180 (flash boot status).
This message is output in the Jupiter flash board
receiver only at start-up to control the flash
download process and to report the results of the
flash ROM checksum validation test. The contents
of the ‘flash boot status’ message are described in
Table 3-21.
3.5.1.18 Message 1190 (error/status)
This message provides diagnostic information if
the receiver encounters an error during execution
of its firmware. The contents of the ‘error/status’
message are described in Table 3-22.
Message ID: 1180
Rate: as required
Message length: 7 words
Word No. Name Type Units Range
1-4 Message header
5 Header checksum
6 Boot status (Note 1) IU short
7 Data checksum
Note 1:
0: checksum = pass
1: checksum = fail
2: copying header
3: waiting for a command
Table 3-21. Message 1180 (flash boot status)
Message ID: 1190
Rate: variable
Message length: 13 words
Word No. Name Type Units Range
1-4 Message header
5 Header checksum
6-7 Set time (Note 1) UDI 10 ms ticks 0 to 4294 967 295
8 Sequence number (Note 2) I 0 to 32 767
9 Class (Note 3) UI 0 to 5
10 Number
I
11 Code environment (CENV) UI
12 Program counter (PC) UI
13 Data checksum
Note 1: Set time is an internal 10 millisecond (T10) count since power-on initialisation enabled the processor interrupts. It is not used
to derive GPS time, but only serves to provide a sequence of events knowledge. The set time or T10 count references the receiver’s
internal time at which the message was created for output. The T10 range is approximately 71 weeks.
Note 2: The sequence number is a count that indicates whether the data in a particular binary message has been updated or
changed since the last message output.
Note 3:
0 = user mode exception
1 = exec mode exception
2 = trap
3 = executive error
4 = executive Service Routine error
5 = user error
Table 3-22 Message 1190 (error/status)