Uts_tic.h

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#ifndef UTS_TIC_H
#define UTS_TIC_H
 
#include <Arduino.h>
#include <HardwareTimer.h>
 
#include <Uts_gpio.h>

class Uts_tic : public Uts_gpio {
    private:
        volatile unsigned long echo_rise_ticks;

        volatile unsigned long echo_fall_ticks;

        HardwareTimer *volatile ic_timer;

        volatile uint8_t ic_channel;
        
        bool send_trig ();

        void update ();

        void ic_callback ();

        uint32_t get_ic_echo_pin ();

        friend void uts_tic_tim8_overflow_callback ();

        friend void uts_tic_tim9_overflow_callback ();
 
    public:
        Uts_tic (const uint8_t init_port);

        ~Uts_tic ();

        bool begin ();

        void end ();

        uint16_t read_dist_mm ();
};

extern Uts_tic uts_tics[4];

extern Uts_tic &uts_tic1;

extern Uts_tic &uts_tic2;

extern Uts_tic &uts_tic3;

extern Uts_tic &uts_tic4;
 
#endif // #ifndef UTS_TIC_H