Error in my PWM library

[S Ganesh]

Hi I am creating a PWM library in c++ to use in my project. I have started working on it below is part of my code it is not complete yet. I have writing a bit by bit code and building it to find errors and I find some error. So I stopped. Even though I had defined right parameters it is giving error. It should preprocess first #if and assign TCC0A with 0x80. But it skipping #if, #elif and last #else is execuing. Please help me to correct given code.

IDE: Atmel Studio 7.0

MCU: ATmega328p

Code:

/************************************************************

                                     PWM.h file

************************************************************/

 

#ifndef PWM_H_

#define PWM_H_

 

//PWM outputs

#define OC0A 1

#define OC0B 2

 

//PWM modes

#define NINV 0b10000000      //Non-inverting Mode

#define INV  0b11000000      //Inverting Mode

 

#include <avr/io.h>

 

class PWM

{ 

    public:

        void Initialize(unsigned char PWMoutputpin,  unsigned char PWMmode)

    {

           TCCR0A = 0x00; TCCR0B = 0x00;

       #if ((PWMoutputpin == OC0A) && (PWMmode == NINV))

             TCCR0A |= NINV;

  

   #elif ((PWMoutputpin == OC0A) && (PWMmode == INV))

          TCCR0A |= INV;

 

    #elif ((PWMoutputpin == OC0B) && (PWMmode == NINV))

            TCCR0A |= (NINV >> 2);

 

    #elif ((PWMoutputpin == OC0B) && (PWMmode == INV))

            TCCR0A |= (INV >> 2);

 

    #else

      #error PWM::Initialize() parameters not defined properly.

  #endif

   }

};

#endif /* PWM_H_ */

/******************************* END **********************/

 

 

/************************************************************

                                      main.cpp file

************************************************************/

#include <avr/io.h>

#include "PWM.h"

 

int main(void)

{

    PWM p;

    p.Initialize(OC0A,NINV);

    return 0;

}

[Ashutosh Bhatt]

why are you writing PWM_H_   ?

it should be PWM_H only

[Saatwik]

if you are getting error that PWM_H_ file in not found then you should check first your library name if it is PWM.h make sure in the program it is same at the time of include.

 

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