Hi,

today I wanted to create an own c-file where I can put some of my own functions for testing etc..
But during compilation I get following error:

main.c🙁.text+0x262): undefined reference to `mb_test'

What I did:Â´

1. I created a mb.h file:

#ifndef MB_H_
#define MB_H_

void mb_test(int var1);

#endif /* MB_H_ */

2. I created mb.c file:

#include "mb.h"

void mb_test(int var1)
{
  // todo
}

3. I included the mb.h into main.c:

#include "platform.h"
#include "stdlib.h"
#include "core.h"
#include "conf.h"
#include "gui.h"
#include "gui_draw.h"
#include "histogram.h"
#include "raw.h"
#include "console.h"
#include "shooting.h"

#include "edgeoverlay.h"
#include "module_load.h"

#include "mb.h" // mrBurns

4. I called mb_test(1) from main.c:

   ...
  shooting_init();

   // mrBurns test
   mb_test(1);
   // mrBurns test

   while (1)
   ...

5. I compiled the code

Two question here:

1. Why I get this compiler error?

2. What is the right place to put some code for testing e.g. read third terminal of battery, read usb pulses, pulse LEDs etc.. I mean just for testing the code and do some measurements with oscilloscope. I want to create some code which is immediatley executed after the cam starts.

Thanks a lot!