How to select correct include file

[OzGrant 22]

G'day

I'm porting a sketch from F5529 to Tiva, and want to be able to use the sketch on both (until debugged). I thought the following would work:

 

#define _TIVA true    //true for Tiva, false for F5529

#if (_TIVA)
   #include "TM4C_DS18B20.h"
#else
   #include "GFDS18B20.h"
#endif

 

But I get multiple definition of `DS18B20:.. errors , when I compile.

Is there a way around this.

 

 

[cde 334]

Try:

#define _TIVA true    //true for Tiva, false for F5529
#ifdef _TIVA
   #include "TM4C_DS18B20.h"
#endif
#ifndef _TIVA
   #include "GFDS18B20.h"
#endif

[OzGrant 22]

Cde,

Nop, still got the same error

[cde 334]

Try changing the Marco name. _TIVA might trigger something weird. Try TivaBug or something.

[OzGrant 22]

Nope again,

Might have to keep a duplicate copy of sketch for each Launchpad.

But my main problem is the unavailability  of the Tiva Serial1 port, but that's in another post.

Sort of stuck between two launchpads, F5529 one runs out of ROM the other has Serial1 problems.

Anyway will push on.

Grant

[LiviuM 43]

Hello Grant,

 

For the lm4f (TIVAC), Energia.h (../energia/hardware/lm4f/cores/lm4f/) has the following defines:

#if defined(__TM4C129XNCZAD__)
#define TARGET_IS_SNOWFLAKE_RA0
#define PART_TM4C129XNCZAD
#elif defined(__TM4C1294NCPDT__)
#define TARGET_IS_SNOWFLAKE_RA0
#define PART_TM4C1294NCPDT
#elif defined(__LM4F120H5QR__) || defined(__TM4C123GH6PM__)
#define TARGET_IS_BLIZZARD_RB1
#define PART_TM4C1233H6PM
#define PART_LM4F120H5QR
#else
#error "**** No PART defined or unsupported PART ****"
#endif

Maybe you can use some of these defines?

 

Regards,

Liviu

[OzGrant 22]

Still nope,

But tks Livium, at least I can use (__TM4C123GH6PM__) instead of _TIVA. But still get multiple definition of `DS18B20:.. errors

 

#if defined(__TM4C123GH6PM__)
   #include "TM4C_DS18B20.h"
#else
   #include "GFDS18B20.h"
#endif
 

[cde 334]

Wait. Maybe its a whitespace thing. Don't indent those include lines.

[pabigot 355]

Whitespace before #include directives should make no difference. Try just doing:

#include "TM4C_DS18B20.h"

unconditionally and see if the problem goes away. I suspect that with most of your attempts you're only getting that file included, and the problem is entirely within it. (Or that something somewhere else is including the conflicting definitions.)

[OzGrant 22]

Both includes work OK

 

When I comment out  #include "TM4C_DS18B20.h" and leave  #include "GFDS18B20.h" the sketch is compiles and tests OK for F5529

and when I comment out  #include "GFDS18B20.h" and leave  #include "TM4C_DS18B20.h" the sketch is compiles and tests OK for Tiva.

 

I am trying to use the same sketch(while I port over to Tiva),  by making _TIVA true for Tiva, or _TIVA false for F5529.

 

It appears the compiler  always tests both includes, regardless of _TIVA state . 

[abecedarian 330]

What is the text of the actual error you receive?

[OzGrant 22]

G'day

Compied with E14 for a Tiva with the following code

 

#if defined(__TM4C123GH6PM__)
   #include "TM4C_DS18B20.h"
#else
   #include "GFDS18B20.h"
#endif

 

get the following errors

:

GFDS18B20V2\GFDS18B20.cpp.o: In function `DS18B20::DS18B20(unsigned char)':
GFDS18B20.cpp:(.text._ZN7DS18B20C2Eh+0x0): multiple definition of `DS18B20::DS18B20(unsigned char)'
TM4C_DS18B20\TM4C_DS18B20.cpp.o:TM4C_DS18B20.cpp:(.text._ZN7DS18B20C2Eh+0x0): first defined here
GFDS18B20V2\GFDS18B20.cpp.o: In function `DS18B20::DS18B20(unsigned char)':
GFDS18B20.cpp:(.text._ZN7DS18B20C2Eh+0x0): multiple definition of `DS18B20::DS18B20(unsigned char)'

etc. for many many lines

 

It is no longer a big issue as I have now have two sketches, and with the porting is nearly over will only require the sketch to compile on the Tiva. 

Grant

[pabigot 355]

That's not a compiler error related to the include file. It's a linker error because you're putting both object files into the target-specific executable. Link GFDS18B20.cpp.o or TM4C_DS18B20.cpp.o but not both.

[OzGrant 22]

Yes its a linker error that is picking up both includes. But the following should inform the linker what include is to be used, and not Both

 

 

#if defined(__TM4C123GH6PM__)
   #include "TM4C_DS18B20.h"      // use this when compiling with Tiva
#else
   #include "GFDS18B20.h"         //use this when compiling with F5529
#endif

[Rickta59 589]

Yes its a linker error ...

It is easier to figure out what the problem is, if you post all the code you are using.