On 9/4/13 7:35 AM, Didier Juges wrote:
Jim,
You should be able to piggyback a second serial port in parallel with the one
used by NTP (just the Rx line and ground) and use any NMEA decoder.
It does not even have to be the same computer.
I have a quick NMEA decoder for Windows I wrote some time ago somewhere.
Heck, for my application it could be as simple as QBASIC
REM Open serial port
OPEN #1, "COM1:"
REM Read next three messages
FOR I=1, 3
LINE INPUT #1, A$
B$ = B$+A$
NEXT I
REM Close Serial port
CLOSE #1
REM Look for $GPRMC message and parse
k = INSTR(B$, "GPRMC")
if k = 0 then
die a miserable death with an error message
else
finish parsing..
end if
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