button2

---

Button 2 Click

Button 2 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.

---

Click Library

• Author : Stefan Filipovic
• Date : Jun 2024.
• Type : GPIO type

Software Support

Example Description

This example demonstrates the use of Button 2 Click board by toggling the button LED and switch state on button press.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Button2

Example Key Functions

• button2_cfg_setup Config Object Initialization function.

void button2_cfg_setup ( button2_cfg_t *cfg );

• button2_init Initialization function.

err_t button2_init ( button2_t *ctx, button2_cfg_t *cfg );

• button2_get_int_pin This function returns the INT pin logic state.

uint8_t button2_get_int_pin ( button2_t *ctx );

• button2_toggle_led This function toggles the button LED state by toggling the LED pin logic state.

void button2_toggle_led ( button2_t *ctx );

• button2_enable_led This function enables button LED by setting the LED pin to the high logic state.

void button2_enable_led ( button2_t *ctx );

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    button2_cfg_t button2_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.
    button2_cfg_setup( &button2_cfg );
    BUTTON2_MAP_MIKROBUS( button2_cfg, MIKROBUS_1 );
    if ( DIGITAL_OUT_UNSUPPORTED_PIN == button2_init( &button2, &button2_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
    log_printf ( &logger, " Press button to change switch state\r\n\n" );
    log_printf ( &logger, " SWITCH OFF\r\n\n" );
}

Application Task

Toggles the button LED and switch state on button press and displays the state on the USB UART.

void application_task ( void )
{
    static uint8_t switch_state = BUTTON2_SWITCH_OFF;
    
    if ( BUTTON2_BUTTON_PRESSED == button2_get_int_pin ( &button2 ) )
    {
        button2_toggle_led ( &button2 );
        switch_state ^= BUTTON2_SWITCH_ON;
        if ( BUTTON2_SWITCH_ON == switch_state )
        {
            log_printf ( &logger, " SWITCH ON\r\n\n" );
        }
        else
        {
            log_printf ( &logger, " SWITCH OFF\r\n\n" );
        }
        Delay_ms ( 1000 );
    }
}

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.

---