smartbuck6

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Smart Buck 6 Click

Smart Buck 6 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 : Stefan Filipovic
• Date : May 2025.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of the Smart Buck 6 Click board. The application changes the output voltage of all three buck converters (A, B, and C) in a periodic manner and logs the output current of each. It also monitors the PG (Power Good) pin to detect and log any fault conditions such as over-temperature, overvoltage, undervoltage, or overcurrent.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.SmartBuck6

Example Key Functions

• smartbuck6_cfg_setup This function initializes Click configuration structure to initial values.

  void smartbuck6_cfg_setup ( smartbuck6_cfg_t *cfg );

• smartbuck6_init This function initializes all necessary pins and peripherals used for this Click board.

  err_t smartbuck6_init ( smartbuck6_t *ctx, smartbuck6_cfg_t *cfg );

• smartbuck6_default_cfg This function executes a default configuration of Smart Buck 6 Click board.

  err_t smartbuck6_default_cfg ( smartbuck6_t *ctx );

• smartbuck6_set_buck_vout This function sets the output voltage for one or more buck regulators.

  err_t smartbuck6_set_buck_vout ( smartbuck6_t *ctx, uint8_t buck_sel, uint16_t vout_mv );

• smartbuck6_read_buck_current This function reads and returns the output current of the selected buck regulator.

  err_t smartbuck6_read_buck_current ( smartbuck6_t *ctx, uint8_t buck_sel, uint16_t *current_ma );

• smartbuck6_get_pg_pin This function reads the logic level of the PG pin.

  uint8_t smartbuck6_get_pg_pin ( smartbuck6_t *ctx );

Application Init

Initializes the logger and the Smart Buck 6 Click driver and applies the default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;  
    smartbuck6_cfg_t smartbuck6_cfg;  

    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );
 
    // Click initialization.
    smartbuck6_cfg_setup( &smartbuck6_cfg );
    SMARTBUCK6_MAP_MIKROBUS( smartbuck6_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == smartbuck6_init( &smartbuck6, &smartbuck6_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( SMARTBUCK6_ERROR == smartbuck6_default_cfg ( &smartbuck6 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
 
    log_info( &logger, " Application Task " );
}

Application Task

Periodically increases or decreases the output voltage, reads and logs the output current for each buck channel, and checks for any fault conditions indicated via the PG pin and status registers.

void application_task ( void )
{
    smartbuck6_status_t status;
    static uint16_t vout = SMARTBUCK6_VOUT_MV_MIN;
    static int16_t vout_step = 200;
    uint16_t current = 0;
    if ( smartbuck6_get_pg_pin ( &smartbuck6 ) )
    {
        log_printf( &logger, "\r\n Fault indication detected via PG pin!\r\n" );
        if ( SMARTBUCK6_OK == smartbuck6_read_status ( &smartbuck6, &status ) )
        {
            smartbuck6_display_status ( status );
        }
        smartbuck6_clear_status( &smartbuck6 );
    }
    if ( SMARTBUCK6_OK == smartbuck6_set_buck_vout ( &smartbuck6, SMARTBUCK6_BUCK_ALL, vout ) )
    {
        log_printf ( &logger, "\r\n All outputs voltage: %u mV\r\n", vout );
        vout += vout_step;
        if ( ( vout > SMARTBUCK6_VOUT_MV_MAX ) || ( vout < SMARTBUCK6_VOUT_MV_MIN ) )
        {
            vout_step = -vout_step;
            vout += vout_step;
            vout += vout_step;
        }
        Delay_ms ( 100 );
        if ( SMARTBUCK6_OK == smartbuck6_read_buck_current ( &smartbuck6, SMARTBUCK6_BUCK_A, &current ) )
        {
            log_printf ( &logger, " Buck A current: %u mA\r\n", current );
        }
        if ( SMARTBUCK6_OK == smartbuck6_read_buck_current ( &smartbuck6, SMARTBUCK6_BUCK_B, &current ) )
        {
            log_printf ( &logger, " Buck B current: %u mA\r\n", current );
        }
        if ( SMARTBUCK6_OK == smartbuck6_read_buck_current ( &smartbuck6, SMARTBUCK6_BUCK_C, &current ) )
        {
            log_printf ( &logger, " Buck C current: %u mA\r\n", current );
        }
    }
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );
}

Note

Ensure that a valid power supply and appropriate load are connected to the Click board to observe proper current and fault condition readings.

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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