buzzer.h

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#pragma once
 
#include <cstdint>
#include <hal/ledc_types.h>
#include <soc/gpio_num.h>
 
class Robot;
 
namespace Device {
    class Buzzer {
    private:
        static constexpr const char* TAG = "Device::Buzzer";
 
        static constexpr gpio_num_t BUZZER_PIN = GPIO_NUM_19;
        static constexpr ledc_timer_t LEDC_TIMER = LEDC_TIMER_1;
        static constexpr ledc_channel_t LEDC_CHANNEL = LEDC_CHANNEL_2;
 
        static constexpr uint16_t INITIAL_FREQUENCY = 100;
        static constexpr uint16_t DUTY_CYCLE = 256;
 
        static constexpr uint16_t FREQUENCY_MIN = 20;
        static constexpr uint16_t FREQUENCY_MAX = 15'000;
 
        Robot& robot;
        uint16_t current_frequency;
        bool turned_off;
 
    public:
        explicit Buzzer(Robot& robot);
        ~Buzzer();

        void initialize();

        void set_frequency(uint16_t frequency);

        void turn_off();
    };
}