8800retro

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8800 Retro Click

8800 Retro Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : Stefan Filipovic
• Date : Jul 2021.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of 8800 Retro Click board.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.8800Retro

Example Key Functions

• c8800retro_cfg_setup Config Object Initialization function.

void c8800retro_cfg_setup ( c8800retro_cfg_t *cfg );

• c8800retro_init Initialization function.

err_t c8800retro_init ( c8800retro_t *ctx, c8800retro_cfg_t *cfg );

• c8800retro_default_cfg Click Default Configuration function.

err_t c8800retro_default_cfg ( c8800retro_t *ctx );

• c8800retro_display_char This function displays a single character from the predefined charset (IBM BIOS 8x8 font array).

err_t c8800retro_display_char ( c8800retro_t *ctx, uint8_t char_index );

• c8800retro_get_keypad This function reads KEYA and KEYB registers and stores the register's inverted value to the keypad variable.

err_t c8800retro_get_keypad ( c8800retro_t *ctx, uint16_t *keypad );

• c8800retro_display_string This function scrolls a desired string on LEDs.

err_t c8800retro_display_string ( c8800retro_t *ctx, uint8_t scroll_mode, uint16_t scroll_speed_ms, uint8_t *text );

Application Init

Initializes the driver and issues the Click default configuration, then asks the user to select the demo example using the on-board KeyPad.

void application_init ( void )
{
    log_cfg_t log_cfg;                /**< Logger config object. */
    c8800retro_cfg_t c8800retro_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.
    c8800retro_cfg_setup( &c8800retro_cfg );
    C8800RETRO_MAP_MIKROBUS( c8800retro_cfg, MIKROBUS_1 );
    err_t init_flag = c8800retro_init( &c8800retro, &c8800retro_cfg );
    if ( I2C_MASTER_ERROR == init_flag ) 
    {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    c8800retro_default_cfg( &c8800retro );
    c8800retro_select_demo_example( &c8800retro );
}

Application Task

There are 4 different demo examples: KeyPad 4x4, Full charset, Text, and Image. This function will run the previously selected demo example in the loop. The user can always switch the example by pressing the button D4 three times in a row. In order to run the demo examples successfully, please follow the instructions logged on the USB UART.

void application_task ( void )
{
    switch ( demo_example )
    {
        case DEMO_KEYPAD4x4:
        {
            c8800retro_demo_keypad4x4 ( &c8800retro );
            break;
        }
        case DEMO_FULL_CHARSET:
        {
            c8800retro_demo_full_charset ( &c8800retro );
            break;
        }
        case DEMO_TEXT:
        {
            c8800retro_demo_text ( &c8800retro, C8800RETRO_SCROLL_HORIZONTAL_LEFT, 
                                                C8800RETRO_SCROLL_SPEED_MEDIUM, 
                                                c8800retro_demo_string );
            break;
        }
        case DEMO_IMAGE:
        {
            c8800retro_demo_image ( &c8800retro, c8800retro_demo_logo_mikroe );
            break;
        }
        default:
        {
            break;
        }
    }
}

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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