Re: [avr-gcc-list] Communicate with GSM phone over RS 232

[Sławomir Kawałek]

Hello!

We have implemented communication with S35i and C35 but unfortunately this
is commercial project and I cannot send you the source code.



But.I may send you some additional information, for example AT command for
GSM. If you want this please contact me.



Some other info:



GSM support two mode of sending SMS:

    1.. Plain text ( this is not supported by C35 and S35)
    2.. PDU mode - this is supported by C35 and S35.


It is easier implement Plain text mode and as I know Nokia supports this
mode.

PDU is a special coded text and it takes a lot of time to implement it in C.



Another problem it a hardware problem, you should limit output voltage of TX
to 2.7V. If you don't do this, the telephone sometimes "gets crazy".and
display is not good visible.

And the last info the speed of UART should be 19200.

I hope my mail help you a little : )





Slawomir Kawalek




----- Original Message -----
From: "Robert Rozman" <address@hidden>
Cc: <address@hidden>
Sent: Monday, June 17, 2002 2:23 PM
Subject: [avr-gcc-list] Communicate with GSM phone over RS 232


> Hello,
>
> I wonder if anyone tried or succeeded to implement communication with GSM
phone
> over RS232 (I'm specially interested in SMS handling for Siemens phones) ?
>
> Is anyone willing to share some example or start up code ?
>
> Thanks in advance,
>
> Robert Rozman
>
>
> avr-gcc-list at http://avr1.org
>


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