buck

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BUCK Click

BUCK 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 : Katarina Perendic
• Date : nov 2019.
• Type : GPIO type

Software Support

Example Description

The demo application displays frequency change and voltage regulation using a BUCK Click.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Buck

Example Key Functions

• buck_cfg_setup Config Object Initialization function.

void buck_cfg_setup ( buck_cfg_t *cfg );

• buck_init Initialization function.

err_t buck_init ( buck_t *ctx, buck_cfg_t *cfg );

• buck_default_cfg Click Default Configuration function.

void buck_default_cfg ( buck_t *ctx );

• buck_switch_frequency Setting the switching frequency function.

void buck_switch_frequency( buck_t *ctx, uint8_t frequency );

• buck_set_mode Select buck mode (Disable / Enable).

void buck_set_mode( buck_t *ctx, uint8_t mode );

• buck_get_power_good Get state internal comparator function.

uint8_t buck_get_power_good( buck_t *ctx );

Application Init

Configuring Clicks and log objects. Settings the Click in the default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;
    buck_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.

    buck_cfg_setup( &cfg );
    BUCK_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    buck_init( &buck, &cfg );
    Delay_ms ( 100 );

    buck_software_reset( &buck );
    buck_default_cfg( &buck );
}

Application Task

This is a example which demonstrates the use of Buck Click board. Checks if it has reached the set output voltage and sets a different frequency to the LT3976 chip every 5 sec.

void application_task ( void )
{
    //  Task implementation.
    if ( buck_get_power_good( &buck ) == 1 )
    {
        log_info( &logger, "----  Power good output voltage!  ----" );
    }
    Delay_ms ( 1000 );

    log_info( &logger, "----  Switching frequency 400kHz!  ----" );
    buck_switch_frequency( &buck, BUCK_FREQ_400KHz );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    log_info( &logger, "----  Switching frequency 800kHz!  ----" );
    buck_switch_frequency( &buck, BUCK_FREQ_800KHz );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
    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.

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