topic Re: calling functions from external files in Classic/Legacy CodeWarrior

calling functions from external files

antony_GB — Wed, 19 Jan 2011 20:17:38 GMT

Hello everybody,

Please excuse my newb question. The problem I am having is that I can't seem to call functions defined in external files. At the moment, in order to try and do so, I am using the following structure:

In "Main.c"

---------------------------------------------------------------

#include "header_file.h"

/*call function*/

<r-type> <function_name> ();

---------------------------------------------------------------

In "header_file.h"

--------------------------------------------------------------

/*function prototype*/

<r-type> <function_name> (<p-type> <p-name>)

--------------------------------------------------------------

In "file_containing_function.c"

-------------------------------------------------------------

/*define function*/

<r-type> <function_name> (<p-type> <p_name>)

{

some_code;

}

-------------------------------------------------------------

The main.c file obviously already exists, however I have added both the "header_file.h" containing the function prototype; and the "file_containing_function.c" which defines my function to my project. Can somebody please explain to me why when in debug mode, I cannot view the 'stack crawl window' step through the function in the external file. It simply seems to bypass the function call altogether.

Thanks for your help.

Re: calling functions from external files

CrasyCat — Wed, 19 Jan 2011 21:14:42 GMT

Hello

First I assume there is a typo in your initial post. Content of main.c should read as:

In "main.c"

---------------------------------------------------------------

#include "header_file.h"

<r-type> retval;

/*call function*/

retVal = <function_name> ();

---------------------------------------------------------------

Then next question is which CPU are you targeting (HC08, HC12, Coldfire, ..)
- Which version of CodeWarrior are you using?
   To retrieve that info:
      - Start CodeWarrior
      - Select Help -> About Freescale CodeWarrior
      - Click on "Install Products"
      - CodeWarrior version used is displayed on top in the Installed Products dialog.

Finally did you enable generation of debug information on file_containing_function.c?

Please check FAQ-27442 on www.freescale.com for more details on how to figure that out.

CrasyCat

Re: calling functions from external files

antony_GB — Wed, 19 Jan 2011 22:16:02 GMT

Thanks CrasyCat for correcting my syntax. Problem solved.