Home Page Forums Raspberry Pi Shields How to understand if a GSM/GPRS Shield is powered up in code?

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    Hi ,

    I have a GSM/GPRS Module. I power up my module via code using these lines

    But I want to add a check of execute this code if only module is not powered up. So which pin should I check?

    Additionaly I see there two version of this module. How should I know which one is my module?

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