buck23

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Buck 23 Click

Buck 23 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 : Jan 2023.
• Type : I2C type

Software Support

Example Description

This example demonstrates the use of Buck 23 Click by changing the output voltage.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Buck23

Example Key Functions

• buck23_cfg_setup Config Object Initialization function.

void buck23_cfg_setup ( buck23_cfg_t *cfg );

• buck23_init Initialization function.

err_t buck23_init ( buck23_t *ctx, buck23_cfg_t *cfg );

• buck23_default_cfg Click Default Configuration function.

err_t buck23_default_cfg ( buck23_t *ctx );

• buck23_set_vstep This function sets the voltage output step to 10mV or 12.5mV.

err_t buck23_set_vstep ( buck23_t *ctx, uint8_t vstep );

• buck23_set_vout This function sets the voltage output.

err_t buck23_set_vout ( buck23_t *ctx, uint16_t vout_mv );

• buck23_get_pg_pin This function returns the PG (power good) pin logic state.

uint8_t buck23_get_pg_pin ( buck23_t *ctx );

Application Init

Initializes the driver and performs the device default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    buck23_cfg_t buck23_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.
    buck23_cfg_setup( &buck23_cfg );
    BUCK23_MAP_MIKROBUS( buck23_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == buck23_init( &buck23, &buck23_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( BUCK23_ERROR == buck23_default_cfg ( &buck23 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Changes the output voltage once per second and displays on the USB UART the currently set voltage output value as well as its range and resolution. It also checks and displays the status register content and the power good pin indication.

void application_task ( void )
{
    uint16_t vout_mv;
    uint8_t status;
    if ( BUCK23_OK == buck23_set_vstep ( &buck23, BUCK23_VSTEP_10 ) )
    {
        log_printf ( &logger, " ------------------------------------\r\n" );
        log_printf ( &logger, " VOUT resolution: 10mV\r\n VOUT range: 500mV to 1270mV\r\n" );
        log_printf ( &logger, " ------------------------------------" );
    }
    for ( vout_mv = BUCK23_VOUT_MIN_VSTEP_10; vout_mv <= BUCK23_VOUT_MAX_VSTEP_10; vout_mv += 50 )
    {
        if ( BUCK23_OK == buck23_read_register ( &buck23, BUCK23_REG_STATUS, &status ) )
        {
            log_printf ( &logger, "\r\n STATUS: 0x%.2X\r\n", ( uint16_t ) status );
        }
        if ( BUCK23_OK == buck23_set_vout ( &buck23, vout_mv ) )
        {
            log_printf ( &logger, " VOUT: %u mV\r\n", vout_mv );
        }
        if ( !buck23_get_pg_pin ( &buck23 ) )
        {
            log_printf ( &logger, " ERROR: No power good\r\n" );
            log_printf ( &logger, " Restarting device\r\n" );
            buck23_restart_device ( &buck23 );
            vout_mv -= 50;
        }
        Delay_ms ( 1000 );
    }
    if ( BUCK23_OK == buck23_set_vstep ( &buck23, BUCK23_VSTEP_12_5 ) )
    {
        log_printf ( &logger, " ------------------------------------\r\n" );
        log_printf ( &logger, " VOUT resolution: 12.5mV\r\n VOUT range: 625mV to 1587.5mV\r\n" );
        log_printf ( &logger, " ------------------------------------" );
    }
    for ( vout_mv = BUCK23_VOUT_MIN_VSTEP_12_5; vout_mv <= BUCK23_VOUT_MAX_VSTEP_12_5; vout_mv += 50 )
    {
        if ( BUCK23_OK == buck23_read_register ( &buck23, BUCK23_REG_STATUS, &status ) )
        {
            log_printf ( &logger, "\r\n STATUS: 0x%.2X\r\n", ( uint16_t ) status );
        }
        if ( BUCK23_OK == buck23_set_vout ( &buck23, vout_mv ) )
        {
            log_printf ( &logger, " VOUT: %u mV\r\n", vout_mv );
        }
        if ( !buck23_get_pg_pin ( &buck23 ) )
        {
            log_printf ( &logger, " ERROR: No power good\r\n" );
            log_printf ( &logger, " Restarting device\r\n" );
            buck23_restart_device ( &buck23 );
            vout_mv -= 50;
        }
        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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