Has anyone used Grass to read in GPS type data from the PC's serial
port? If so, which pieces of GRASS was used?
-jr-
J.R. Spidell (jspidell@cl08.cnde.iastate.edu) writes on 9 May 94:
Has anyone used Grass to read in GPS type data from the PC's serial
port? If so, which pieces of GRASS was used?
Are you talking about simply transferring data from the PC (base station)
to your GRASS machine (work station), or do you have UNIX/GRASS on
the PC and wish to read in data directly from your mobile (hand held?)
unit? I.e., I do not understand *what's* connected *where* or what the
objective is.
The only thing that reads data from a serial port (that I'm aware of)
is v.digit. You may, however, get it or 'kermit' (a non-GRASS
program) to do what you want.
"I've never tried this but..." perhaps the new configurable
v.digit could be taught to send the right codes so that
a mobile unit or PC could send the data through serial ports.
Could be a fun way to spend an afternoon 
The only GPS stuff that I've played with (Trimble) came with DOS software
that wrote GRASS site lists...
--Darrell
James Darrell McCauley, Purdue Univ, West Lafayette, IN 47907-1146, USA
mccauley@ecn.purdue.edu, mccauley%ecn@purccvm.bitnet, pur-ee!mccauley
** will finish PhD/engr in 9/94 - need job. inquiries welcome (no hh, plz) **
** Personal WWW page URL ftp://pasture.ecn.purdue.edu/pub/mccauley/me.html **
In article <9405100341.AA11314@cl08.cnde.iastate.edu> you write:
Has anyone used Grass to read in GPS type data from the PC's serial
port? If so, which pieces of GRASS was used?-jr-
-jr-
How about some more facts (ie. type of GPS, problems you are
experiencing, system you want to load the GPS data onto, etc.)
Right now, your request for assistance is a bit vague.
We use a TRIMBLE pathfinder as our GPS, and correct the data using TRIMBLE
software on a PC. We transfer the GPS/GIS output to a UNIX workstation by
one of two methods; via floppy disk or a communications package (PROCOMM).
We have a shareware package of floppy disk read/write utilities installed on
the workstation to read DOS floppies (MTOOLS).
The PC & workstation are connected via serial ports; we use PROCOMM to set
up a dumb terminal/remote login environment, and then transfer files
(at 19200 baud) via 'kermit' protocol. We also move 'tiff' files from the
workstation to the PC in this manne.r
GRASS or any GRASS module does not enter into the transfer of GPS data, at
least in our setup.
Ronald Thomas ront@meeker.cfnr.colostate.edu
Natural Resource Spec. (GIS) ^^^ Phone: 303-586-1285
Resources Management Division ^^ ^^^^^ FAX: 303-586-1310
Rocky Mountain National Park ^^^ ^^^^^^^ Estes Park, CO 80517