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problem with macro

odvud noy

the following type of macro defining causing error , what should i do? plz help.

#define LCD_DATA P2

error: 'LCD_DATA': undefined identifier

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  • 0 in reply to odvud noy

    Well, where do you have your #define?

    And have you spelled your #define correctly?

    Because the error message indicates that the preprocessor have not seen and replaced LCD_DATA - but the preprocessor will not generate an error for any unknown symbols. The compiler will, if LCD_DATA is still visible after the preprocessing step.

    So show us real code that gives the error.

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  • 0 in reply to odvud noy

    Well, where do you have your #define?

    And have you spelled your #define correctly?

    Because the error message indicates that the preprocessor have not seen and replaced LCD_DATA - but the preprocessor will not generate an error for any unknown symbols. The compiler will, if LCD_DATA is still visible after the preprocessing step.

    So show us real code that gives the error.

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