TivaPWM.hxx

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#ifndef _FREEERTOS_DRIVERS_TI_TIVAPWM_HXX_
#define _FREEERTOS_DRIVERS_TI_TIVAPWM_HXX_
 
#include "PWM.hxx"
 
#include "driverlib/timer.h"
 
 
class TivaPWM : public PWM {
public:
    TivaPWM(unsigned timer_base, unsigned timer, unsigned period, unsigned duty)
        : base_(timer_base), timer_(timer) {
        set_period(period);
        set_duty(duty);
        MAP_TimerControlLevel(base_, timer_, true);
        MAP_TimerEnable(base_, timer_);
    }
    
    void set_period(uint32_t counts) override {
        MAP_TimerLoadSet(base_, timer_, counts);
    }
    virtual uint32_t get_period() override {
        return MAP_TimerLoadGet(base_, timer_);
    };
    void set_duty(uint32_t counts) override {
        MAP_TimerMatchSet(base_, timer_, counts);
    }
    virtual uint32_t get_duty() override {
        return MAP_TimerMatchGet(base_, timer_);
    }
    virtual uint32_t get_period_max() override {
        // @TODO figure out what is the max period
        return 0;
    }
    virtual uint32_t get_period_min() override {
        return 2;
    }
    
private:
    unsigned base_;
    unsigned timer_;
};
 
#endif // _FREEERTOS_DRIVERS_TI_TIVAPWM_HXX_