GSM module interfaced with 8051 problem

Discussion in 'Embedded Systems and Microcontrollers' started by Briez, Jun 7, 2013.

  1. Briez

    Thread Starter New Member

    Apr 23, 2013
    4
    0
    hello,

    I am doing gsm based sms sending project using 8051.

    But when i send "AT" command from ucontroller, gsm module replies me by "_U" character.


    What should be the problem?

    Please help me........
     
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