IPAQ serial device

[marko]

Hi all,
I want to connect my external device to HP IPAQ serie 6300 Microsoft ppc
2003.

I found with ppc a serial/usb cable and I try to connect this with a mini
tester to verify DSR CTR RTS signals.
I used ZTERM ppc to open serial port but leds (on mini-tester) was always
turned off. (NB. on my desktop mini-teser work fine!)

So, I download a compact framework serial port tester and I try to do the
same tests without success. Can you help me to know how open and use serial
port?

Another question is how use GSM modem by code. I'm be able to make call with
precharged telephone software, but I want interface my program with internal
modem device.
Please let me know to more info.

Thanks
mkz.

 

[nzpcmad]

Use the OpenNETCF Serial port classes.

There is an example in the Sample folder.

To use the modem just send the AT command to the serial port defined
above.

To see which serial port have a look in the registry. Other posts I
have used state:

"Export the registry using the Remote Registry Editor that you can
download with eVC 4.0. This is your base registry. There should be
some number of COM ports identified in the HKLM\Drivers\Active section
of the registry."

Thanks

 

[Dick Grier]

Hi,

Are you using an internal serial port? If so, the cable that is furnished
for it is wired as a null-modem. This means that Tx and Rx are reversed, as
are CTS and RTS and DTR and CD. DSR isn't exposed, AFAIK. This cable is
designed to connect your PPC to a PC.

To reverse these connections to connect to most external (not another PC),
you must add another null-modem adapter or cable in series with the cable
you are using.

Dick

--
Richard Grier (Microsoft Visual Basic MVP)

See www.hardandsoftware.net for contact information.

Author of Visual Basic Programmer's Guide to Serial Communications, 4th
Edition ISBN 1-890422-28-2 (391 pages) published July 2004. See
www.mabry.com/vbpgser4 to order.