pas-co2-pwm-sw.hpp

Go to the documentation of this file.

#ifndef PAS_CO2_PWM_SW_HPP_
#define PAS_CO2_PWM_SW_HPP_

#include "pas-co2-conf.hpp"

#if IS_INTF(PAS_CO2_INTF_PWM_SW)

#include "pas-co2-pal-gpio.hpp"
#include "pas-co2-pal-timer.hpp"
#include "pas-co2-pal-pwm.hpp"

namespace pasco2
{

class PWMSW : public PWM
{
    public:
 
        enum Mode_t
        {
            MODE_POLLING,               
            MODE_INTERRUPT              
        };

                    PWMSW   (GPIO  * const pwmIn, 
                             Timer * const timer,
                             Mode_t        mode);
                                    
                   ~PWMSW   ();
        Error_t     init    ();
        Error_t     deinit  ();
        Error_t     getDuty (double & duty); 

    private:

        GPIO  * const pwmIn;
        Timer * const timer;
        Mode_t        mode;

        volatile bool risingEdgeEvent;                  
        volatile bool fallingEdgeEvent;

        static constexpr uint8_t pulseTrainLen = 160; 
        void poll      ();


        typedef void (* cback_t)(void *);

        static constexpr uint8_t   maxGPIOObjs = 4;             
        static           uint8_t   idxNext;                     
        static           PWMSW   * objPtrVector[maxGPIOObjs];   
        static void              * fnPtrVector [maxGPIOObjs];   
    protected:

               void         callback    ();

        static void         int0Handler ();
        static void         int1Handler ();
        static void         int2Handler ();
        static void         int3Handler ();

        static void       * isrRegister (PWMSW *objPtr);
};

}
#endif 
#endif