Output to parallel port

This is a discussion on Output to parallel port within the C Programming forums, part of the General Programming Boards category; I am trying to write a number to the parallel port data lines and when I use the following code, ...

  1. #1
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    Output to parallel port

    I am trying to write a number to the parallel port data lines and when I use the following code, my program crashes.

    #include <conio.h>
    #define data 0x378

    scanf("%i",&bits);
    _outp(data,bits);

    Any ideas?

  2. #2
    ATH0 quzah's Avatar
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    Re: Output to parallel port

    Originally posted by samuraijack
    I am trying to write a number to the parallel port data lines and when I use the following code, my program crashes.

    #include <conio.h>
    #define data 0x378

    scanf("%i",&bits);
    _outp(data,bits);

    Any ideas?
    Wow. You're lucky it compiles. You don't even have a main function...

    Quzah.
    Hope is the first step on the road to disappointment.

  3. #3
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    I do have a main function, I just didn't think that I needed to put that in aswel.

    #include <conio.h>
    #define data 0x378

    int main(void)
    {
    scanf("%i",&bits);
    _outp(data,bits);
    }

    Any ideas?
    Last edited by samuraijack; 01-27-2003 at 03:18 AM.

  4. #4
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    I have been looking into this one and have found out that because I am using Windows NT 4 I can not just use the windows drivers and must make my own with windows DDK.

    Before I begin does anybody know of a way around this?

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