if I define a macro, or use static const value, in an embedded system,
which kind of memory will be used, chip flash or chip ram?
Which way is better?
if I define a macro, or use static const value, in an embedded system,
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if I define a macro, or use static const value, in an embedded system,
which kind of memory will be used, chip flash or chip ram?
Which way is better?
Well, if you #define a macro, no additional memory or code space (flash) allocated for it. All job done in compile stage.
If you use a
static constglobal variable, binary codes will generated for initial value and memory allocated for it. both flash (bin file size bigger) and memory (chip ram) used.