Interfacing wavecom M1306B GSM problem

Discussion in 'Embedded Systems and Microcontrollers' started by aamirali, Aug 6, 2014.

  1. aamirali

    Thread Starter Member

    Feb 2, 2012
    415
    1
    I am interfacing wavecom M1306B & facing some problem.

    1. Sometimes when I send a command like "AT\r", I don't get any response from wavecom.

    Even if had 2 sec timeout for reception, after which I resend command but still don't receive anything from wavecom.


    2. I have only used rx & tx lines of wavecom. do wavecom needs all pins of uart for interfacing like CTS, etc.

    Edit:
    When I connect it to PC & use teraterm it works fine. I don't know if teraterm is using all pins of DB9. Buy CTS bit in teraterm shows green flag
     
  2. aamirali

    Thread Starter Member

    Feb 2, 2012
    415
    1
    Datasheet says we have to use flow control:hardware.

    But I have triedin hyperterminal without flowcontrol i.e None, it works fine.

    Should I ground CTS pin of modem to ground. There is 7V coming there.
     
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