2908Re: [tracker2] Serial Port
- Feb 7, 2008Understood. My point is that your "Hope that GPS
forwarding from port B to A can eventualy be done"
presumes the actual existence of a "port B" and a
"port A," not just a single serial port physically
instantiated as both a USB connector and an RS-232
connector. The dependency of the operation of the
RS-232 connector on the non-operation of the USB
connector suggests to me that both the USB connector
and the RS-232 connector may be internally connected
to a single, inseparable serial port. However, like I
said, I don't know how Garmin implemented the USB and
RS-232 interfaces, so things might not be as they
--- "Tyson S." <timbercutter@...> wrote:
> The Garmin GPSMAP 60c has both a serial connector____________________________________________________________________________________
> and a USB connector on the back, you can plug the
> serial cable into the back of the Tracker2 and feed
> it NMEA 0183 data at 4800 baud for example. I had
> hoped that I could then plug the USB cable into the
> GPS and computer and then use the Garmin USB
> protocol with a mapping program such as
> USAPhotomaps, but as soon as the gps detects that
> you have plugged in the USB cable it shuts off the
> serial connector to your Tracker2.
> ----- Original Message ----
> From: R. Snyder <rds_6@...>
> To: timbercutter@...
> Sent: Thursday, February 7, 2008 4:00:21 PM
> Subject: Re: [tracker2] Serial Port
> Your hope that the USB and RS-232 port can be used
> separately at the same time presume they are
> ports. It is not uncommon to implement a USB port
> using a USB converter IC, such as FTDI's FT232 or
> Prolific's PL-2303HX. In such a case, it's almost
> necessary to disable the unused port to avoid bus
> contention issues. So, hardware limitations may
> hinder what you propose, but I don't know if that's
> the case with Garmin's hardware.
> Ross N0GSZ
> --- "Tyson S." <timbercutter@...> wrote:
> > Something that I thought would be a cool way to do
> > things was to use the serial connection on the
> > GPSMAP 60c with the T2 and the USB connection with
> > USAPhotomaps, but it's no good. Garmin decided to
> > disable the serial connection as soon as the unit
> > detects a USB connection to something.
> > ----- Original Message ----
> > From: Michel Graveline <ve2wmg@...>
> > To: email@example.com
> > Sent: Thursday, February 7, 2008 3:10:02 PM
> > Subject: [tracker2] Serial Port
> > Thanks to all, that is answering all my question.
> > Hope that GPS
> > forwarding from port B to A can eventualy be done
> > 73
> > Never miss a thing. Make Yahoo your home page.____________________________________________________________________________________
> > http://www.yahoo.com/r/hs
> Never miss a thing. Make Yahoo your home page.____________________________________________________________________________________
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