Design a portable color analyzer with CLS-16D24-44-DF8/TR8 and ATmega328P

/*!
 * @file main.c
 * @brief Color15 Click example
 *
 * # Description
 * This example demonstrates the use of Color 15 Click board by reading data
 * from 5 channels and converting them to HSL color and displaying those data as 
 * well as the detected color name on the USB UART.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes the driver and performs the Click default configuration.
 *
 * ## Application Task
 * Waits for the data ready interrupt, then reads the values of all channels and converts
 * them to HSL color and displays those data as well as the detected color name on the USB UART
 * every 500ms approximately.
 *
 * @author Stefan Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "color15.h"

static color15_t color15;
static log_t logger;

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    color15_cfg_t color15_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    color15_cfg_setup( &color15_cfg );
    COLOR15_MAP_MIKROBUS( color15_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == color15_init( &color15, &color15_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( COLOR15_ERROR == color15_default_cfg ( &color15 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

void application_task ( void ) 
{
    // Wait for the data ready interrupt indication
    while ( color15_get_int_pin ( &color15 ) );
    
    color15_channels_t channels;
    if ( ( COLOR15_OK == color15_clear_interrupt ( &color15 ) ) &&
         ( COLOR15_OK == color15_get_data ( &color15, &channels ) ) )
    {
        color15_hsl_t hsl;
        color15_rgbw_to_hsl ( &color15, &channels, &hsl );
        log_printf ( &logger, "\r\n Hue: %.1f deg\r\n", hsl.hue );
        log_printf ( &logger, " Saturation: %.1f %%\r\n", hsl.saturation );
        log_printf ( &logger, " Lightness: %.1f %%\r\n", hsl.lightness );
        switch ( color15_get_color ( &hsl ) )
        {
            case COLOR15_RED_COLOR:
            {
                log_printf( &logger, " Color: RED\r\n" );
                break;
            }
            case COLOR15_YELLOW_COLOR:
            {
                log_printf( &logger, " Color: YELLOW\r\n" );
                break;
            }
            case COLOR15_GREEN_COLOR:
            {
                log_printf( &logger, " Color: GREEN\r\n" );
                break;
            }
            case COLOR15_CYAN_COLOR:
            {
                log_printf( &logger, " Color: CYAN\r\n" );
                break;
            }
            case COLOR15_BLUE_COLOR:
            {
                log_printf( &logger, " Color: BLUE\r\n" );
                break;
            }
            case COLOR15_MAGENTA_COLOR:
            {
                log_printf( &logger, " Color: MAGENTA\r\n" );
                break;
            }
            case COLOR15_WHITE_COLOR:
            {
                log_printf( &logger, " Color: WHITE\r\n" );
                break;
            }
            case COLOR15_BLACK_COLOR:
            {
                log_printf( &logger, " Color: BLACK\r\n" );
                break;
            }
            default:
            {
                log_printf( &logger, " Color: UNKNOWN\r\n" );
                break;
            }
        }
    }
}

int main ( void ) 
{
    /* Do not remove this line or clock might not be set correctly. */
    #ifdef PREINIT_SUPPORTED
    preinit();
    #endif
    
    application_init( );
    
    for ( ; ; ) 
    {
        application_task( );
    }

    return 0;
}

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