C/C++ Question Wrapping a library with 2 pairs of .h and .cpp files

[janderkan]

A common CAN.h file looks like this:

#ifndef CAN_H
#define CAN_H
#ifdef ARDUINO_ARCH_ESP32
#include "ESP32SJA1000.h"
#else
#include "MCP2515.h"
#endif
#endif[
/CODE]

And in the 2 referenced .h files are a common definition of CAN:

[CODE=cpp]
extern MCP2515Class CAN;
   
extern ESP32SJA1000Class CAN;

In Arduino i just do :

#include <CAN.h>

after that I can use the CAN object directly.

But I cannot figure out how to do it in a wrapper !

Jan

 

[Erel]

The same include line should work the same from the wrapper. Which error do you get?

Open src\src.ino with Arduino IDE and see what changes you need to make to get it compiling.

 

[janderkan]

In my .h file I use this:

    private:
        MCP2515Class canbus;

and it works.
But this does not work:

    private:
        CAN canbus;

The error is:

rCAN.h:12:4: error: 'CAN' does not name a type
    CAN mycan;

 

[janderkan]

I figured it out, I do not need the declaration in my .h file.
I can just use CAN in my .cpp file.

Jan