On Sat, 21 Jun 2014, it would appear that Kustaa Nyholm wrote: > On 18/06/2014 16:41, "Maarten Brock" <sourceforge.br...@dse.nl> wrote: >> >> I don't know. I don't work on the pic backend. But try it and you'll find >> out soon enough I guess by looking at the generated asm. > > Maybe I should have tried this first... > > > In the .h I put: > > extern volatile BDT ep0_o; > > > In the .c that includes above I put: > > volatile BDT __at (0x0400+0*8) ep0_o; > > and the compiler says: > > usb_pic_defs.c:9: error 91: extern definition for 'ep0_o' mismatches with > declaration. > usb_pic_defs.h:70: error 177: previously defined here > > > So...maybe I'm too tired but I can't figure out how I can put a > variable at a given address and declare it in the .h file > and define it in the .c file. If I define it at the .h file > then I get into trouble with linker if I include the .h file > in multiple .c files...not god. > > br Kusti
Why not put: #ifndef __VARDEF volatile BDT __at (0x0400+0*8) ep0_o; #define __VARDEF #endif ...other defines in your .h? Joel -- Joel Davidson Austin, TX ------------------------------------------------------------------------------ HPCC Systems Open Source Big Data Platform from LexisNexis Risk Solutions Find What Matters Most in Your Big Data with HPCC Systems Open Source. Fast. Scalable. Simple. Ideal for Dirty Data. Leverages Graph Analysis for Fast Processing & Easy Data Exploration http://p.sf.net/sfu/hpccsystems _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
