Thanks for storytime. Seriously. I actually understand what is at issue
now. Amazing what stories do for ya. So in theory, if i hooked the palm
hotsync cable up to a null modem cable it should work? I had tried to do
that, hotsync cable to gender changer to null modem cable, to device, but it
didn't work. Unfortunately, my device was borrowed so i can't test it out
again, but if you say it should work, then i probally just did something
wrong. When they return my toy, ill try again and let you know. Thanks.
Andrew
Richard Hartman <[EMAIL PROTECTED]> wrote in message
news:20502@palm-dev-forum...
>
> To help you make sense of things, I'll try an analogy w/o
> the RX/TX tech trivia.
>
> For two RS232 devices to talk to each other, one must
> be configured as DTE and the other must be configured
> as DCE. For now, don't bother with what the initials mean
> ... just consider them as similar to magnetic polarity i.e.
> "north" and "south". North sticks to south, but north repels
> north and south repels south.
>
> So, if your computer talks to your Palm through a given
> cable, one device is "north" and the other is "south". If
> your computer talks to a third device through a cable X,
> again one is "north" and the other is "south". Now assume
> your computer is "north", that makes both the palm and
> the other device "south". So if you use cable X to try
> to connect the palm and the third device you've got
> south-to-south and they repel.
>
> You either need a different cable, or you need a little
> device called a "null modem adapter" which performs
> the nifty little trick of converting north polarity to south
> (not possible using real magnets, but it was just an
> analogy ;-)
>
> --
> -Richard M. Hartman
> [EMAIL PROTECTED]
>
> 186,000 mi/sec: not just a good idea, it's the LAW!
>
>
> Andrew Lathrop wrote in message <20387@palm-dev-forum>...
> >
> >Ok. Trying to make sense of what everyone said. I went to a few
websites
> >and tried to figure this out. From
> >http://www.massena.com/darrin/pilot/luiz/item4.htm, i found out about the
> >cradles connections. It said that (Arrows show direction of data, numbers
> >are pins, RX - receiving, TX - trasmitting )
> >6 TX ----> 2 RX ------> 2 RX
> >8 RX<---- 3 TX <------ 3 TX
> >Cradle Cable End Serial Port
> >And i am guessing the third part, that the 2 RX connects to the 2 RX on
my
> >comps serial port, and the 3 TX to the 3 TX.
> >From http://www.loop-back.com/null-mod.html, i figure out how the null
> modem
> >cable i used in the direct serial connection works.
> >2 RX <------- 2 RX <-------- 3 TX <--------- 2 TX
> >3 TX -------> 3 TX --------> 2 RX --------> 3 RX
> >Serial Port Cable End 1 Cable End 2 SerialPort
> >Device 1
> >Device 2
> >The more I look at this, the more confused I get. But, assuiming my
> >diagrams are correct, and that i follow my own train of thought, in both
> >cases the data is switched from RX to TX once. So then in theory, there
> >should be no problem??? If anyone can please explain what i said, or
> >correct me in any way, please let me know. Thanks for the earlier
> >suggestions.
> >Andrew
> >Andrew Lathrop <[EMAIL PROTECTED]> wrote in message
> >news:20279@palm-dev-forum...
> >>
> >> A question. I have written an app that works fine in the emulator. It
> >uses
> >> the serial port to connect to a third device via a direct serial cable.
> >> When the HotSync the program to my Palm, and then try to use it on the
> >Palm,
> >> connecting to the third device using the HotSync cradle. It no longer
> >> works. From what I can tell, the cradle isn't sending out the same
stuff
> >> over the serial cable. Would this be different if i got a third party
> >> serial cable that had no cradle? Which would mean the HotSync cradle
> >steals
> >> the serial port only for its own use. Or does the actual Palm Device
> >handle
> >> serial communications differently? Other apps did work using the
cradle,
> >> but those went back to the serial port on my desktop and i talked to
> >> HyperTerminal. Any ideas? Any input would be greatly appreciated,
> >> Thanks
> >> Andrew
> >>
> >>
> >>
> >>
> >
> >
> >
> >
>
>
>
>
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