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8051 interfacing with GSM Nokia 6080 mobile
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Ajay Bhargav
Fri Jul 03 2009, 06:56AM
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you better try this way..
change the sms format like add a starting and ending byte to your message
e.g. *Switch1ON#
so it will be easy for you to read. you wait for * and after receiving * start storing data till #.


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logistic
Fri Jul 03 2009, 07:18AM
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Thank you Ajay.

I understand the concept. Its no problem. The problem i am facing is storing the Data in array in assembly language.

I have tried using something like:
mov dptr,#Test
movx @dptr,a
inc dptr

Test: DB " ", 00H

but this does not work on hyperterminal (however shows correct output in pinnacle simulation
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Ajay Bhargav
Mon Jul 06 2009, 03:32AM
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which controller are you using?

do you have XRAM in your controller?
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logistic
Mon Jul 06 2009, 06:45AM
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i dont know about XRAM, its just simple AT89S51 microcontroller.
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Ajay Bhargav
Wed Jul 08 2009, 06:21AM
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movx command is for external ram. can you post your code so i can help better?
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logistic
Wed Jul 29 2009, 05:28AM
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Can you help me understand the command AT+CNMI

I want to get an interrupt on my uC (At89S51) when a new SMS arrives. I am using Nokia 6080.

Currently i am trying AT+CNMI=2,3,2,0,0

What does this mean.
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Ajay Bhargav
Wed Jul 29 2009, 02:26PM
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you wont get any interrupt, but you can get an unsolicited response from mobile whenever you get a new sms.

have you gone through the CNMI description? what part you did not understand?
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logistic
Wed Jul 29 2009, 05:31PM
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Ajay what do you mean by unsolicited response?

How would the controller know if a new message has arrived?

No sorry i haven't gone through the description of CNMI. Just read somewhere that we need to send it.

Can you please kindly help me understand how to let the controller know when a new message arrives.
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logistic
Thu Jul 30 2009, 11:06AM
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on the following link its written

AT+CNMI New Message Indications to TE

So i thought it meant interrupt on Tx pin. I know i was mistaken but is there any way round this?

http://www.parallax.com/Portals/0/Education/custapps/Nokia_AThelp.pdf
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ExperimenterUK
Fri Jul 31 2009, 08:22AM
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logistic wrote ...

Ajay what do you mean by unsolicited response?


Normally you (the micro) sends a command and the phone replies.
An unsolicited response is sent by the phone without the micro asking for it.


Just continuously monitor any chars from the phone
until a message arrives saying "you have an SMS"




[ Edited Fri Jul 31 2009, 08:28AM ]
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