4dotmatrixr

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4Dot-Matrix R Click

4Dot-Matrix R 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 : MikroE Team
• Date : May 2020.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of 4Dot-Matrix R Click board.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.4dotmatrixr

Example Key Functions

• c4dotmatrixr_cfg_setup Config Object Initialization function.

void c4dotmatrixr_cfg_setup ( c4dotmatrixr_cfg_t *cfg );

• c4dotmatrixr_init Initialization function.

err_t c4dotmatrixr_init ( c4dotmatrixr_t *ctx, c4dotmatrixr_cfg_t *cfg );

• c4dotmatrixr_default_cfg Click Default Configuration function.

void c4dotmatrixr_default_cfg ( c4dotmatrixr_t *ctx );

• c4dot_write_char 4DotMatrix Char Write.

void c4dot_write_char ( c4dotmatrixr_t *ctx, uint8_t char_num, uint8_t char_value );

• c4dot_write_char0 4DotMatrix Char 0 Write.

void c4dot_write_char0 ( c4dotmatrixr_t *ctx, uint8_t char_value );

• c4dot_write_text 4DotMatrix Text Write.

void c4dot_write_text ( c4dotmatrixr_t *ctx, uint8_t *text_to_write );

Application Init

Initializes the driver and performs the Click default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;
    c4dotmatrixr_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 ----" );

    //  Click initialization.

    c4dotmatrixr_cfg_setup( &cfg );
    C4DOTMATRIXR_MAP_MIKROBUS( cfg, MIKROBUS_POSITION_4DOTMATRIXR );
    c4dotmatrixr_init( &c4dotmatrixr, &cfg );
    
    c4dotmatrixr_default_cfg ( &c4dotmatrixr );
    log_info( &logger, "---- Application Task ----" );
}

Application Task

Displays a desired text message and then numbers from -20 to 20 on the Click board. Each step will be logged on the USB UART where you can track the program flow.

void application_task ( void )
{
    int8_t i;
    log_printf( &logger, "------------------------------------\r\n" );
    log_printf( &logger, "Displaying \"Mikroelektronika\" on the Click board...\r\n" );
    for ( i = 0; i < 20; i++ )
    {
        c4dot_write_text(  &c4dotmatrixr, text + i );
        Delay_ms ( 150 );
    }
        
    // Clear and delay.
    c4dot_clear_display( &c4dotmatrixr );
    Delay_ms ( 500 );
        
    log_printf( &logger, "Displaying all integer numbers from -20 to 20 on the Click board...\r\n" );
    // Write some numbers on the display.
    for ( i = -20; i <= 20; i++ )
    {
        c4dot_write_int_dec( &c4dotmatrixr, i );
        Delay_ms ( 150 );
    }

    // Clear and delay.
    c4dot_clear_display( &c4dotmatrixr );
    Delay_ms ( 500 );
}

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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