8x8

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8x8 click

8x8 click is a 64 LED matrix display Click board™, composed of SMD LEDs organized in 8 rows by 8 columns.

• Product page - 8x8 Y click
• Product page - 8x8 G click
• Product page - 8x8 B click
• Product page - 8x8 R click

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Click library

• Author : Katarina Perendic
• Date : nov 2019.
• Type : SPI type

Software Support

We provide a library for the 8x8 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 8x8 Click driver.

Standard key functions :

• Config Object Initialization function.

void c8x8_cfg_setup ( c8x8_cfg_t *cfg );

• Initialization function.

C8X8_RETVAL c8x8_init ( c8x8_t *ctx, c8x8_cfg_t *cfg );

• Click Default Configuration function.

void c8x8_default_cfg ( c8x8_t *ctx );

Example key functions :

• Scroll string function

void c8x8_set_speed_scroll( c8x8_t *ctx, uint8_t speed );

• Function for displaying one character

void c8x8_display_byte( c8x8_t *ctx, char tx_byte );

• Image display function

void c8x8_display_image( c8x8_t *ctx, uint8_t *p_image );

Examples Description

This demo example shows a drawing of Image, new create string and character on the screen.

The demo application is composed of two sections :

Application Init

Configuring clicks and log objects. Settings the click in the default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;
    c8x8_cfg_t cfg;

    //  Logger initialization.

    log_cfg.level = LOG_LEVEL_DEBUG;
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    c8x8_cfg_setup( &cfg );
    C8X8_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    c8x8_init( &c8x8, &cfg );

    log_info( &logger, "---- Default matrix config ----" );
    c8x8_default_cfg( &c8x8 );
    Delay_1sec( );
}

Application Task

Shows one byte, then scrolls the string and image, every 1 sec.

void application_task ( void )
{
    //  Task implementation.

    log_info( &logger, "> Display Character ..." );
    c8x8_display_byte( &c8x8, demo_char );
    Delay_ms( 1000 );

    log_info( &logger, "> Display String ..." );
    c8x8_display_string( &c8x8, &demo_string[ 0 ] );
    Delay_ms( 1000 );

    log_info( &logger, "> Display Image ON ..." );
    c8x8_display_image( &c8x8, &demo_img_on[ 0 ] );
    Delay_ms( 500 );

    log_info( &logger, "> Display Image OFF ..." );
    c8x8_display_image( &c8x8, &demo_img_off[ 0 ] );
    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.8x8

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.

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