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.h in assembly

erik malund

.h in assemblym works beautifully as far as #define, sfr and sbit being useful in assembly.

Now I have a case of conditional compile that I need reflected in an assembly module. I have tried to make the assembly IF and $IF work based on a #define.

Using IF it works if I do a #define 1 or #define 0, that, however wil require replacing all #ifdefs in the C. $IF seems not to react to #define

any suggestions?

Erik

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    If you have recent versions of Keil assembler (older versions didn't work):
    You can write the same syntax of conditional expressions as in C, e.g.
    #if instead of "old" $IF

    In include file "numbers.h" (which is used by assembly and c modules) you define:

    #define DEVELOP 2

    In Assembly file "example.a51":
    #include <numbers.h>

#if ( DEVELOP >= 1 )
        MOV  A,P3
        MOV  SBUF,A
#else
        MOV  var,#0
#endif

    It works fine.

    But: An Assembler will not work if you have defined enum's in include files....

    Martin

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  • 0

    If you have recent versions of Keil assembler (older versions didn't work):
    You can write the same syntax of conditional expressions as in C, e.g.
    #if instead of "old" $IF

    In include file "numbers.h" (which is used by assembly and c modules) you define:

    #define DEVELOP 2

    In Assembly file "example.a51":
    #include <numbers.h>

#if ( DEVELOP >= 1 )
        MOV  A,P3
        MOV  SBUF,A
#else
        MOV  var,#0
#endif

    It works fine.

    But: An Assembler will not work if you have defined enum's in include files....

    Martin

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