Bargraph 2 Click

BarGraph 2 Click is a 10-segment bar graph display Click, which uses a high-quality, multicolor bar graph LED display. The bar graph display is a very popular device for displaying various properties, whether it be an audio level, current/voltage level, position of the encoder, and generally any property that can be displayed in a form of a bar graph.

Click Product page

Click library

• Author : MikroE Team
• Date : Dec 2019.
• Type : SPI type

Software Support

We provide a library for the Bargraph2 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 Bargraph2 Click driver.

Standard key functions :

• Config Object Initialization function.

  void bargraph2_cfg_setup ( bargraph2_cfg_t *cfg );

• Initialization function.

  BARGRAPH2_RETVAL bargraph2_init ( bargraph2_t ctx, bargraph2_cfg_t cfg );

Example key functions :

• This function turns on the green LED diode of the chosen segment.

  void bargraph2_led_green ( bargraph2_t *ctx, uint8_t index );

• This function turns on green LED diodes from the starting index to the end index.

  void bargraph2_leds_green ( bargraph2_t *ctx, int start_index, int end_index );

• This function turns off all the LED diodes.

  void bargraph2_lights_out ( bargraph2_t *ctx );

Examples Description

The example starts off with the initalisation and configuration of the logger and Click modules and later on showcases different ways of lighting LED diodes on the Click.

The demo application is composed of two sections :

Application Init

This function initializes and configures the logger and Click modules.

void application_init ( )
{
    log_cfg_t log_cfg;
    bargraph2_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.

    bargraph2_cfg_setup( &cfg );
    BARGRAPH2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    bargraph2_init( &bargraph2, &cfg );
}

Application Task

This function shows the user how to light single and multiple LED diodes.

void application_task ( )
{
    uint8_t cnt; 

    // Single LED switch

    for ( cnt = 1; cnt <= 10 ; cnt++ )
    {
        bargraph2_led_green( &bargraph2, cnt );
        Delay_ms ( 200 );
        bargraph2_led_red( &bargraph2, 10 - ( cnt - 1 ) );
        Delay_ms ( 200 );
    }

    bargraph2_lights_out ( &bargraph2 );

    // Multiple LED switch

    bargraph2_leds_green ( &bargraph2, 1, 10 );
    Delay_ms ( 1000 );
    bargraph2_leds_red ( &bargraph2, 1, 10 );
    Delay_ms ( 1000 );
    bargraph2_leds_yellow ( &bargraph2, 1, 10 );
    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.Bargraph2

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.