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AT89S52 and modem interfacing

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Using the below function.

Code C - [expand]
1
tx_string("AT+CMGR=1");



The above instruction will read the message at index 1. Then due to Serial interrupt code given previously msg_array[] will be filled with the response and message sent by modem or mobile. You have to first make sure at what location or at what index of the respone and message resides the password. Connect your modem or mobile to PC and then delete all the messages in the SIM and then send a SMS the password to that number from another no or the same no. So, your SIM should be now having 1 message which contains the password. After you issur AT+CMGR=1 the modem/mobile will give some response and then display the message (password). Take a screenshot of it and post it. I will then write a code.
 

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