Color_sensor.h

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#ifndef COLOR_SENSOR_H
#define COLOR_SENSOR_H
 
#include <Arduino.h>
#include <Wire.h>
 
#include <Supported_sensor.h>

enum color_t {
    black   = 0,
    white   = 1,
    grey    = 2,
    red     = 3,
    green   = 4,
    blue    = 5,
    yellow  = 6,
    cyan    = 7,
    magenta = 8
};

struct rgbc_t {
    uint32_t  c;

    uint32_t  r;

    uint32_t  g;

    uint32_t  b;
};

struct hsl_t {
    uint16_t h;

    uint8_t  s;

    uint8_t  l;
};

struct rgb_t {
    uint8_t r;

    uint8_t g;

    uint8_t b;
};

uint16_t rgb888_to_rgb565 (rgb_t rgb888);

class Color_sensor : public Supported_sensor {
    private:
        const uint32_t port;

        uint8_t i2c_address;

        static const uint8_t DEFAULT_I2C_ADDRESS;

        static const uint32_t I2C_FREQ;

        bool send_cmd (const uint8_t cmd);

        void i2c_request_by_cmd (const uint8_t cmd, uint8_t *const rx_buf, const size_t rx_buf_len);
    
    public:
        Color_sensor (const uint32_t init_port);

        bool begin (const uint8_t init_i2c_address = DEFAULT_I2C_ADDRESS);

        uint8_t get_color ();

        rgb_t get_rgb ();

        hsl_t get_hsl ();

        rgbc_t get_rgbc ();

        void turn_on_light_bulb ();

        void turn_off_light_bulb ();

        void turn_on_indicator_led ();

        void turn_off_indicator_led ();

        bool cal ();
};
 
#endif // #ifndef COLOR_SENSOR_H