Newsgroup: it.comp.hardware.palmari
Titolo: [TEC] usb\seriale

un saluto a tutti i palmisti,
domandina da palmarista relativamnete niubbo ( nel senso che ho un Palm
III da 5 anni e li mi sono fermato ... ;-) )
nei PPC ( dell axim x5 in particolare) è possibile utilizzare la porta usb
per comunicazioni non di sync. nel senso, se ci metto un convertitore
usb\seriale poi riuscirei ad indirizare la porta come una com ? 
il motivo di ciò ? vorrei attaccarci un gps seriale e le CFC\seriale
costano uno sproposito :...(
grassssie a tutti
alessandro d.
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 una com ?
No, ma esistono cavi all'uopo per il tuo Axim, che escono direttamente in
seriale...
Credo...

 Credo...


Salve posto un thread che ho trovato su Pocket PC Passion : (lo so la cosa
non è proprio elegante .... )
Dell Axim + Serial cable + Hacked Rand Mcnally GPS unit = WORKING! 
Let me start off witht he hardware I have: I have an old Rand Mcnally GPS
unit that was for a Palm 3. I took the unit apart and began modifying the
circuit board until I had a standard rs232 GPS unit. I am not using a NULL
modem since I made a DB9 connector and cusom wired it. What I did was
this: the Tx line (serial out) from the GPS unit is going to pin 3 on the
DB9 male connector. The Rx line (serial in) from the GPS unit is going to
pin 2 on the DB9 male connector. The GND from the GPS unit is going to Pin
5 (Gnd) on the DB9 connector. Pins 1 and 4 on the male DB9 connector are
tied together and are not conneted tot he GPS unit in anyway, this is just
a "handshake" for the Dell. Pins 6 - 9 are left open (not connected to
anything). I am also using Mapopolis. If you want you can go to their
website and download the GPS application to test the setup out, it's the
Maps themselves that you have to purchase from them. 
Here's the fun part: Active synch is like a horny dog looking for any leg
to jump on...it will try to connect to anything that connects to the Axims
COM port. What you have to do BEFORE hooking the Dell serial cable up to
the Axim is turn on your GPS unit (mine had a battery that I connected to
it) and start the GPS program and tell it to connect to the GPS (even
though it isn;t hooked up the Axim yet) that way the GPS program captures
the COM port and has full control of it. Once it's started, connect the
Dell serial cable up to the Axim and watch Active Synch try and make a
connection but fail (this is a good sign) it may not always try but
sometimes will. Clear the error and go to your GPS program. If it timed
out looking for your GPS unit then restart the program (not the Axim), if
it dosn't find your GPS unit then don't give up, simply unplug the DB9 end
of the Dell serial cable from the GPS and plug it back in (make sure the
GPS app is running and looking for the GPS unit). The COM port that the
GPS program should be going out on COM1 so turn off the "Auto Detect COM
port" and tell it to just go straight to COM1, you can leave the "Auto
Detect Baud rate". 
EDIT: Make sure Active Synch shut down by lookig at running apps, active
synch dosn't always shut down cleanley. 
I hope this helps with other serial GPS units. If you have any questions
post them here, I'll be reading up. 
Steve
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