ledc.h

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#pragma once
 
#include <vector>
#include <soc/gpio_num.h>
#include <driver/ledc.h>
#include <freertos/FreeRTOS.h>

namespace HAL::LEDC {
    struct timer_config_t {
        ledc_timer_t timer;
        uint32_t frequency;
        ledc_timer_bit_t resolution;
    };
 
    struct channel_config_t {
        ledc_channel_t channel;
        ledc_timer_t timer;
        gpio_num_t gpio_pin;
        uint32_t duty;
    };

    class Controller {
    private:
        static constexpr const char* TAG = "HAL::LEDC";
 
        static constexpr ledc_mode_t SPEED_MODE = LEDC_LOW_SPEED_MODE;
 
        mutable SemaphoreHandle_t mutex;
 
        struct saved_channel_config_t {
            ledc_channel_t channel;
            gpio_num_t gpio_pin;
        };
 
        std::vector<ledc_timer_t> registered_timers;
        std::vector<saved_channel_config_t> registered_channels;
 
    private:
        explicit Controller();
        ~Controller();
 
    public:
        Controller(const Controller&) = delete;
        Controller& operator=(const Controller&) = delete;

        static Controller& get_instance() {
            static Controller _instance;
            return _instance;
        }

        void shutdown();

        void add_timer(const timer_config_t& config);

        void add_channel(const channel_config_t& config);

        void set_frequency(ledc_timer_t ledc_timer, uint32_t frequency) const;

        void set_duty(ledc_channel_t ledc_channel, uint32_t duty) const;
    };
}