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HP-48G IR connectivity
Message #1 Posted by Thomas Radtke on 12 July 2011, 1:34 p.m.

I'd like to transfer files between my 48G and my PC.

Here's what I did:

Installing USB-serial converter on Win7 (FTDI/FT232RL)
Connect Jeteye IR device
Setup Windows NT 4.0sp6 in VirtualBox
Connect host port to guest port
Start WinNT
Install Quickbeam

Now, Jeteye works basically. The IR detector scans for devices every three seconds and you see the red LED lighten up at this interval. However, no IR device is detected, allthough the 48G has flag 33 set and is in server mode (and of course just in front of Jeteye).

I'm lost.

Thanks,

Thomas

      
Re: HP-48G IR connectivity
Message #2 Posted by Marcus von Cube, Germany on 12 July 2011, 1:41 p.m.,
in response to message #1 by Thomas Radtke

Are you sure the 48G is an IRDA device? I assume it's just serial over IR. You should try without the driver installed. Just use the comport provided by the FTDI driver.

            
Re: HP-48G IR connectivity
Message #3 Posted by Thomas Radtke on 12 July 2011, 2:18 p.m.,
in response to message #2 by Marcus von Cube, Germany

Thank you Marcus,

I didn't noticed the Quickbeam software conforms to IrDA :-/. Ok, deinstalled the package, rebooted NT4. Now not even the LED lights up when I fire up the connectivity software. Of course, I changed the COM port from the no longer available number 4 to number 1, even specified base address and IRQ after that failed, but still to no avail.

Any further ideas?

      
Re: HP-48G IR connectivity
Message #4 Posted by Christoph Giesselink on 12 July 2011, 2:01 p.m.,
in response to message #1 by Thomas Radtke

Many year ago I wrote an article about this topic. The article is available at http://www.hpcalc.org/details.php?id=4856.

Christoph

            
Re: HP-48G IR connectivity
Message #5 Posted by Thomas Radtke on 12 July 2011, 2:49 p.m.,
in response to message #4 by Christoph Giesselink

"The IR transfer with IrDA hardware between PC and HP calculator might work, but because of the many exceptions, explained above, it mostly will fail."

Yes indeed ;-).

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