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Custom getchar

Mik Kleshov

Is there a way to prevent getchar from echoing the input characters? I tried to write my own implementation of getchar, but the linker doesn't seem to let me do that.
- Mike

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  • 0 in reply to Mik Kleshov

    I've taken the Traffic example.
    If I put "char getchar(void){return 0;}" in Serial.c, at link stage I get
    *** ERROR L104: MULTIPLE PUBLIC DEFINITIONS

    I believe the reason for the error is that the function is defined as:

    extern signed char getchar   (void);

    in "stdio.h". Try defining it as a signed char and try it again.

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  • 0 in reply to Mik Kleshov

    I've taken the Traffic example.
    If I put "char getchar(void){return 0;}" in Serial.c, at link stage I get
    *** ERROR L104: MULTIPLE PUBLIC DEFINITIONS

    I believe the reason for the error is that the function is defined as:

    extern signed char getchar   (void);

    in "stdio.h". Try defining it as a signed char and try it again.

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