softpwm.h

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#ifndef SEMF_OUTPUT_SOFTPWM_H_
#define SEMF_OUTPUT_SOFTPWM_H_
 
#include <semf/app/system/timebase.h>
#include <semf/output/digitalout.h>
#include <semf/output/pwm.h>
#include <semf/system/gpio.h>
#include <semf/utils/core/signals/slot.h>
#include <semf/utils/system/softwaretimer.h>
#include <limits>
 
namespace semf
{
class SoftPwm : public Pwm
{
public:
    SoftPwm(Gpio& output, app::TimeBase& timebase, bool inverted = false);
    explicit SoftPwm(const SoftPwm& other) = delete;
    virtual ~SoftPwm() = default;
 
    void setMaxValue(unsigned int maxValue) override;
    unsigned int maxValue() const override;
    void set(unsigned int value, bool inverted = false) override;
    unsigned int value() const override;
    void start() override;
    void stop() override;
    bool isEnabled() const override;
 
private:
    void startOnTime();
    void startOffTime();
    bool checkForConstantSetting();
 
    DigitalOut m_out;
    SoftwareTimer m_pwmCycleTimer;
    SEMF_SLOT(m_startOnTimeSlot, SoftPwm, *this, startOnTime);
    SEMF_SLOT(m_startOffTimeSlot, SoftPwm, *this, startOffTime);
    unsigned int m_pwmValue = 0;
    unsigned int m_maxValue = std::numeric_limits<unsigned int>::max();
};
} /* namespace semf */
#endif /* SEMF_OUTPUT_SOFTPWM_H_ */