UT-L 7-SEG B Click

UT-L 7-SEG B Click is a compact add-on board that presents an easy solution for adding a numeric or hexadecimal display to your application. This board features two blue JSS-5611BUB-21s, ultra-thin single-digit numeric displays from Ningbo Junsheng Electronics. The displays are medium (0.56 inches in height) and can display letters, numbers, and symbols in a highly readable form. The host MCU can control the light intensity of the red segments of the display.

Click Product page

Click library

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

Software Support

We provide a library for the UT-L 7-SEG B 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 UT-L 7-SEG B Click driver.

Standard key functions :

• utl7segb_cfg_setup Config Object Initialization function.

  void utl7segb_cfg_setup ( utl7segb_cfg_t *cfg );

• utl7segb_init Initialization function.

  err_t utl7segb_init ( utl7segb_t *ctx, utl7segb_cfg_t *cfg );

• utl7segb_default_cfg Click Default Configuration function.

  err_t utl7segb_default_cfg ( utl7segb_t *ctx );

Example key functions :

• utl7segb_display_number UT-L 7-SEG B display number function.

  err_t utl7segb_display_number ( utl7segb_t *ctx, uint8_t base, uint8_t num, uint8_t dot_pos );

• utl7segb_enable UT-L 7-SEG B enable function.

  void utl7segb_enable ( utl7segb_t *ctx );

Example Description

This example demonstrates the use of the UT-L 7-SEG B Click board™ by writing and displaying the desired numbers on the screen.

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. */
    utl7segb_cfg_t utl7segb_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.
    utl7segb_cfg_setup( &utl7segb_cfg );
    UTL7SEGB_MAP_MIKROBUS( utl7segb_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == utl7segb_init( &utl7segb, &utl7segb_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( UTL7SEGB_ERROR == utl7segb_default_cfg ( &utl7segb ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
}

Application Task

The demo application draws numbers, in hexadecimal format, from 0h to FFh on the display.

void application_task ( void )
{
    for ( uint8_t hex_num = 0x00; hex_num < 0xFF; hex_num++ ) 
    {
        if ( UTL7SEGB_OK == utl7segb_display_number( &utl7segb, 
                                                     UTL7SEGB_BASE_NUM_SYS_HEXADECIMAL, 
                                                     hex_num, 
                                                     UTL7SEGB_NO_DOT ) )
        {
            log_printf( &logger, " --- %.2X ---\r\n", ( uint16_t ) hex_num );
            Delay_ms ( 500 );
        }
    }
}

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.UTL7SEGB

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.