Color 8 click

Color 8 click is a color-sensing Click board™, a part of our sensor Click board™ line. Sensing the color by utilizing ROHM’s BH1749NUC, an integrated color sensor IC, it comes in the package which also includes the mikroSDK™ software, a library with all the functions.

click Product page

Click library

• Author : MikroE Team
• Date : Dec 2019.
• Type : I2C type

Software Support

We provide a library for the Color8 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Package can be downloaded/installed directly form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for Color8 Click driver.

Standard key functions :

• Config Object Initialization function.

  void color8_cfg_setup ( color8_cfg_t *cfg );

• Initialization function.

  COLOR8_RETVAL color8_init ( color8_t ctx, color8_cfg_t cfg );

Example key functions :

• This function reads data from register.

  uint16_t color8_read_data ( color8_t *ctx, uint8_t reg_data );

• This functions reads 3 color filters and Clear Filters and converts the resulting color from RGB to HSL.

  float color8_get_color_value ( color8_t *ctx );

• This function detect colors.

  uint8_t color8_get_color ( color8_t *ctx, float color_value );

Examples Description

This demo app reads RED, GREEEN, BLUE, IR data and return detect color.

The demo application is composed of two sections :

Application Init

Initialization device device configuration for start measurement.

void application_init ( void )
{
    log_cfg_t log_cfg;
    color8_cfg_t cfg;

    /** 
     * 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 ----\r\n" );

    //  Click initialization.

    color8_cfg_setup( &cfg );
    COLOR8_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    color8_init( &color8, &cfg );

    color8_default_cfg( &color8 );
    log_printf( &logger, "---- Start measurement ----\r\n");
}

Application Task

Reads RED, GREEEN, BLUE and IR data. Converts data to HSL value and return detect color.

void application_task ( void )
{
    uint16_t red_data;
    uint16_t green_data;
    uint16_t blue_data;
    uint16_t ir_data;
    uint8_t is_color;
    float color_value;

    red_data = color8_read_data( &color8, COLOR8_REG_RED_DATA );
    log_printf( &logger, " RED data : %d \r\n", red_data );

    green_data = color8_read_data( &color8, COLOR8_REG_GREEN_DATA );
    log_printf( &logger, " GREEN data : %d \r\n", green_data );

    blue_data = color8_read_data( &color8, COLOR8_REG_BLUE_DATA );
    log_printf( &logger, " BLUE data : %d \r\n", blue_data );

    ir_data = color8_read_data( &color8, COLOR8_REG_IR_DATA );
    log_printf( &logger, " IR data : %d \r\n", ir_data );

    color_value = color8_get_color_value( &color8 );
    log_printf( &logger, " HSL color value : %f \r\n", color_value );

    is_color = color8_get_color( &color8, color_value );
    switch( is_color )
    {
        case 1:
        {
            log_printf( &logger, "--- Color: ORANGE \r\n" );
            break;
        }
        case 2:
        {
            log_printf( &logger, "--- Color: RED \r\n" );
            break;
        }
        case 3:
        {
            log_printf( &logger, "--- Color: PINK \r\n" );
            break;
        }
        case 4:
        {
            log_printf( &logger, "--- Color: PURPLE \r\n" );
            break;
        }
        case 5:
        {
            log_printf( &logger, "--- Color: BLUE \r\n" );
            break;
        }
        case 6:
        {
            log_printf( &logger, "--- Color: CYAN \r\n" );
            break;
        }
        case 7:
        {
            log_printf( &logger, "--- Color: GREEN \r\n" );
            break;
        }
        case 8:
        {
            log_printf( &logger, "--- Color: YELLOW \r\n" );
            break;
        }
        default:
        {
            break;
        }
    }
    Delay_ms ( 1000 );
} 

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.Color8

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.