Subject: Temperture data acq RS232 network system.
From: ACRE NL
Date: 11/16/2002, 8:09 AM


 > Here is a sample of only one sentence from the GPS.
there are other sentences with other data.

S-Ident Z Time  uSEC    Latitude   Longit     Speed  Hdg D-M-Yr  Checksum
$GPRMC,144051.023550,A,3352.269,N,11823.157,W,0000.4,190,120593,,,*27

Here is a little real time test program to run. It checks if you can acess
the hardware clock and hardware timer directly.
There is both the QB source shown here and the compiled
version attached.

If it runs on Windows 95 in a DOS window on your notebook
then the ON COMM command should work as well.



Paul, Things may have gotten simpler as I realized I already had a cable
that hooks to the PC serial port used to load database updates from the PC
to the Garmin.  I'll have to check it out to see if I can get the NEMA data
over it - it might not be wired right for that purpose.

Ed

You will eventually have to make a new cable with three wires as
the GPS should go on the end of the daisy chain loop.

TX(out) from PC, RX (in) mod 1, TX to mod 2, RX mod 2, TX to GPS RX GPS TX
back to PC.

Paul Lamar
 
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