Multiple definition of a variable in a multi-file sketch

Projects Programming
4

Thanks, gfvalvo.

I tried your suggestion and prepended "extern" to the variable definitions in multi_file.h. That did not remedy the problem. Here is the code for the updated file.

/* FILE: multi_file.h */

#ifndef multi_file_h
#define multi_file_h

#include "Arduino.h"

extern byte var_1 = 0;
void fnc_1( void );
extern byte var_2 = 0;
void fnc_2( void );

#endif