[aprssig] Garmin emulation

Stan - N0YXV n0yxv at gihams.org
Thu Jan 12 00:13:58 EST 2006

Somewhat a side thought. If you make it so the data can be played back can
you make it so that the data only shows up on the screen and doesn't get
IGated back to APRS-IS? Maybe it could even have a safety switch so that it
can't run if your connected to the internet.

Just some food for thought.

> -----Original Message-----
> From: aprssig-bounces at lists.tapr.org
> [mailto:aprssig-bounces at lists.tapr.org]On Behalf Of Scott Miller
> Sent: Wednesday, January 11, 2006 1:48 PM
> To: 'TAPR APRS Mailing List'
> Subject: [aprssig] Garmin emulation
> Just wanted to see what everyone thinks of an idea I had.  I've
> been working
> a lot with the Garmin binary protocol for my new project, and in
> the course
> of the development process came up with a test program to emulate
> functions
> of a Garmin GPS.  I found that by connecting a null modem cable
> between two
> serial ports, I could transfer waypoints to and from any mapping program
> that supports Garmin protocol - which is most of them.
> I think something like this might be easiest to deploy as a
> UI-View plugin,
> at least initially.  It wouldn't be completely seamless from the mapping
> side, since you'd have to manually start transfers, but it might open up a
> lot more software options.
> I'm not looking forward to writing a virtual com port driver, though.  And
> all of the commercial loopback drivers I've seen start at $100.  In
> Unix/Linux it's absolutely trivial to set one up, but it could be a real
> pain in Windows.  If anyone knows of a cheap (or free) solution to create
> fake com ports, let me know.
> Scott
> N1VG
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