AlphaNum G 2 Click

AlphaNum G 2 Click is a compact add-on board that represents an easy solution for adding numeric or hexadecimal displays to your application. This board features the LTP-3862, a dual-digit 16-segment alphanumeric green display from Lite-ON. It is a 0.3” (7.62mm) display with black face and white segments. The LED segments use common anodes, and besides segments, the decimal point (DP) dot is also available.

Click Product page

Click library

• Author : Nenad Filipovic
• Date : Sep 2023.
• Type : SPI type

Software Support

We provide a library for the AlphaNum G 2 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for AlphaNum G 2 Click driver.

Standard key functions :

• alphanumg2_cfg_setup Config Object Initialization function.

  void alphanumg2_cfg_setup ( alphanumg2_cfg_t *cfg );

• alphanumg2_init Initialization function.

  err_t alphanumg2_init ( alphanumg2_t *ctx, alphanumg2_cfg_t *cfg );

• alphanumg2_default_cfg Click Default Configuration function.

  err_t alphanumg2_default_cfg ( alphanumg2_t *ctx );

Example key functions :

• alphanumg2_display_character AlphaNum G 2 display character function.

  err_t alphanumg2_display_character ( alphanumg2_t *ctx, uint8_t left_char, uint16_t left_brightness, uint8_t right_char, uint16_t right_brightness );

• alphanumg2_set_led_output AlphaNum G 2 set LED output function.

  err_t alphanumg2_set_led_output ( alphanumg2_t *ctx, uint16_t seg_bit_mask, alphanumg2_dot_t seg_dot, uint16_t brightness );

Example Description

This example demonstrates the use of the AlphaNum G 2 Click board™ by writing and displaying the desired alphanumeric characters.

The demo application is composed of two sections :

Application Init

Initialization of SPI module and log UART. After driver initialization, the app executes a default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    alphanumg2_cfg_t alphanumg2_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.
    alphanumg2_cfg_setup( &alphanumg2_cfg );
    ALPHANUMG2_MAP_MIKROBUS( alphanumg2_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == alphanumg2_init( &alphanumg2, &alphanumg2_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( ALPHANUMG2_ERROR == alphanumg2_default_cfg ( &alphanumg2 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
    log_printf( &logger, "------------------------\r\n" );
    Delay_ms ( 100 );
}

Application Task

The demo application displays digits from '0' to '9', symbols: colon, semicolon, less-than, equals-to, greater-than, question mark, at sign and capital alphabet letters, on both alphanumeric segments of the Click. Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void )
{
    log_printf( &logger, " %c %c\r\n", character, character + 1 );
    if ( ALPHANUMG2_OK == alphanumg2_display_character( &alphanumg2, 
                                                        character, ALPHANUMG2_BRIGHTNESS_MAX, 
                                                        character + 1, ALPHANUMG2_BRIGHTNESS_MAX ) )
    {
        character++;
        if ( ASCII_CHARACTER_UPPERCASE_Z <= character )
        {
            character = ASCII_CHARACTER_DIGIT_0;
            log_printf( &logger, "------------------------\r\n" );
            Delay_ms ( 1000 );
        }
    }
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.AlphaNumG2

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. UART terminal is available in all MikroElektronika compilers.