Interfacing gsm modem, rtc, and at89c52 microcontroller

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prabin20

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Hi Guys, hw r u all ......? i am working on a project, in which i have to send sms continuously after certain intervals of time. The sms will be sent through GSM Modem Sim 300 attached with the AT89C52 Micro controller.To provide time, i will use RTC.

The SMS send through GSM modem should have format like :

-----------------------------------------------------
New SMS:
Time:Monday, 22 April 2013, 09:00 HRS
#Message#
-----------------------------------------------------

Guys, please help me out !!!
 

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