EndRun Tempus LX GPS, User Manual

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T e m p u s L X G P S U s e r M a n u a l 64
A P P E N D I X B
65 T e m p u s L X G P S U s e r M a n u a l
U P G R A D I N G T H E F I R M W A R E
Waiting for download using XMODEM 128 or XMODEM 1K (both with CRC).
Control X will abort download.
After about 3 seconds, you should see a capital ‘C’ character appear. When you do, hit the <enter>
key. Now the script will initiate the XMODEM file transfer and display this message to the console:
---Starting file upload, should take about 60 seconds...
After about one minute you should see this message from the script:
/sbin/upgradegps: line 26: 27618 Terminated cat </dev/arm_user
---You should see the GPS sub-system startup message now. If not, you
---may need to check your binary file and re-perform the procedure.
The first message should be ignored. It is only reporting that one of the intermediate processes of the
script execution has been terminated. The next message informs you that the GPS engine file transfer
has completed, and that its start-up messages should appear. First the bootloader message will ap-
pear:
Tempus Bootloader 6010-0050-000 v 1.00 - May 28 2004 17:31:05
In about ten seconds, the GPS engine application start-up messages should appear:
FW 6010-0020-000 v 1.00 - Aug 18 2004 10:47:41
FPGA 6020-0005-000 v 0202
The firmware version should match that of the binary file that you uploaded. At this point, the
up-
gradegps
script terminates its execution, and you will again have the standard Tempus LX console
prompt.
After about one minute, you should query the GPS firmware version using the command:
gpsversion
The upgraded version information should be displayed.
Problems with the
GPS Upgrade
Should you have difficulties with the upgrade due to a corrupt file, power failure during upload, or
other accident, do not be alarmed. Even though you may have lost the existing application program,
the GPS engine bootloader program will remain intact. On boot up, it will check to see if a valid
application program is in the FLASH memory. If there is not, it will immediately go right into the
‘waiting for download’ mode. You may verify this by issuing this command:
cat < /dev/arm_user
You should now see the ‘C’ character being received every three seconds. This is the character that
the GPS engine bootloader sends to indicate to the XMODEM utility that it is wating for a download.
You may now re-try the upload procedure, assuming that you have corrected any original problem
with the binary file. First kill the
cat
command by typing CTRL-C. You should see a command
prompt. Now issue this command to re-transfer the binary file:
upgradegps /tmp/6010-0020-000_3.01.bin