Help with macro

[Lox]

Hello

I would like to make a macro that does the following:

If i write:

BACKUP(X);

it should expand to:

copy((u8_t *)&place.X_work, (u8_t *)&place.X_backup,
sizeof(X_work_t));


How do i make the macro

This does not work:

#define BACKUP(x) nv_copy((u8_t *)&place.##block##_work, (u8_t
*)&place.##block##_backup, sizeof( ##block##_t))

Thank you.

 

[Jive74]

Il 24/10/2010 14.59, Lox ha scritto:

Hello

I would like to make a macro that does the following:

If i write:

BACKUP(X);

it should expand to:

copy((u8_t *)&place.X_work, (u8_t *)&place.X_backup,
sizeof(X_work_t));


How do i make the macro

This does not work:

#define BACKUP(x) nv_copy((u8_t *)&place.##block##_work, (u8_t
*)&place.##block##_backup, sizeof( ##block##_t))

Thank you.

This should work (don't know why you wrote block instead of x):

#define BACKUP(x) nv_copy((u8_t *)&place. x##_work, (u8_t *)&place.
x##_backup, sizeof( x##_t))

Giovanni

 

[Lox]

Thank you. It works.