How to use a macro in ASM file but it is defined in .h file?

[ray]

Posted on June 28, 2014 at 10:46

I define a macrio in .h file using C language:#define VERSION 0x01.But I want to use it in an ASM file. How can I reference it? I try to #include ''*.h'', but it failed.

[Dmitry Bravikov]

Posted on June 28, 2014 at 11:50

It is not possibly. Assembler doesn't know about C language.

[stm322399]

Posted on June 28, 2014 at 13:25

It's a feature that depends on your toolchain.

Example: using GNU toolchain, assembly file  (*.S) are first sent to the C preprocessor, where header files can be included, and macro expanded. Which toolchain do you use ?

[Andrew Neil]

Posted on June 28, 2014 at 20:46

''Assembler doesn't know about C language''

As already noted, it depends on the Assembler.eg, 

http://www.keil.com/forum/8313/

RTFM for the particular assembler in question...

[Andrew Neil]

Posted on June 28, 2014 at 20:51

As suggested in the

http://www.keil.com/forum/8313/

, even if the Assembler in question doesn't support 'C' headers, you could pass the source file through the

'C'

preprocessor - to deal with #include, #define, #if, etc -

before

giving it to the Assembler...

[ray]

Posted on June 29, 2014 at 05:07

Thanks your reply. I use MDK-ARM in keil.