Originally Posted by brak
I would be extremely interested in finding out more about this - what protocol did they provide specs for? Do you still have access to their documents?
I may still have copies around though i am sure they are out of date now.
The document was for the complete nema sentences, including the proprietary ones which is what i wanted.
In addition, I got the entire Garmin private protocol including their waypoint and route
exchange for upload download and a unique "NEMA OVERLAY"
protocol that allowed both NEMA and GARMIN to exist on the same bus so
I could use Nobeltec
on my computer accepting NEMA and use my own software
to extract waypoints from nobeltec
database and pump
down to Garmin without having to disconnect and reconnect cables
, interrupt nav, or use T switches.
The stuff is ancient now. I ended up designing some "smart" NEMA multiplexer hardware
with sentence filtering and buffering and using a USB interface in parallel direct to the USB port on my garmin. (smart as in microprocessor based, not clever).
I'd try them again for an updated version if you need it.
If you have no luck, let me know and I'll see if i can pull up my old version.