Hi,
If it is working ok in hyperterminal then I would suggest you
have a problem in the PIC. I don't know how you are doing
the rs232 receive routine but would start looking there. I
suspect you are missing characters.

A good idea is to set aside a RAM buffer to use for rs232 rx
and all the rs232 rx interrupt does it put the character in it.
Then in a main loop keep checking the last character in for
a delimiter ie in this case should be a carriage return, then
process the info in the buffer.

Hope that is of some help.

Cheers,
Peter Mcalpine

-----Original Message-----
From: pic microcontroller discussion list
[mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Jinx
Sent: Wednesday, 17 March 2004 10:49 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC:] Anybody using Siemens MC35 and PIC ?


> what is the exact command that you are sending to MC35?

The sequence I'm using is at

http://home.clear.net.nz/pages/joecolquitt/mc35.html

> You are working in Text or PDU mode?

Text

The problem is that there isn't always a concluding OK coming
from the MC35. The diagram at the above address shows the
OK included on the top memory dump, and OK missing in the
memory dump below that. And it appears the MC35 just sends
garbage instead of terminating the message properly as it does
in the top example

Everything else I've tried seeems to be working OK (sending SMS
from the MC35 to a cellphone or e-mail address for example). Part
of the problem is that there are so many parameters for commands
in the AT Manual and I'm fairly ignorant of what they all do. The lack
of examples and very technicalese descriptions don't help. It's been
on hold for a few days and I did plan to look up a user group

The problem with CMGL hasn't manifested itself (yet) using Hyper-
terminal and the same set-up commands, which is puzzling. Electrically
the PIC+MAX232 and the PC are quite close. I've looked at the data
stream with an oscilloscope and logic analyser but can'[t detect any
kind of breakdown. The MC35 itself seems to be the source of the bad
data

If you can see anything wrong or missing I'd be grateful for any advice

thanks

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