stepdown2

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Step Down 2 click

The Step Down 2 click is a Click board™ equipped with the L6986HTR, a synchronous step-down switching regulator with operating input voltages from 4V to 38V and output voltage adjustability ranges from 0.85 V to VIN. Because of the main possibilities its features offer, the Step Down 2 click is ideally used for programmable logic controllers (PLCs), decentralized intelligent nodes, sensors, and low noise applications (LNM).

click Product page

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Click library

• Author : MikroE Team
• Date : Feb 2020.
• Type : GPIO type

Software Support

We provide a library for the StepDown2 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 StepDown2 Click driver.

Standard key functions :

• Config Object Initialization function.

void stepdown2_cfg_setup ( stepdown2_cfg_t *cfg );

• Initialization function.

STEPDOWN2_RETVAL stepdown2_init ( stepdown2_t *ctx, stepdown2_cfg_t *cfg );

• Click Default Configuration function.

void stepdown2_default_cfg ( stepdown2_t *ctx );

Example key functions :

• This function reads the digital signal from the RST pin.

uint8_t stepdown2_digital_read_rst ( stepdown2_t *ctx );

• This function writes the specified digital signal to the CS pin.

void stepdown2_digital_write_cs ( stepdown2_t *ctx, uint8_t signal );

Examples Description

This example showcases how to initialize and use the Step Down 2 click. The click is a step-down monolithic switching regulator able to deliver up to 2 A (DC).

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;
    stepdown2_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.

    stepdown2_cfg_setup( &cfg );
    STEPDOWN2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    stepdown2_init( &stepdown2, &cfg );

    stepdown2_digital_write_cs( &stepdown2, 1 );
    Delay_100ms( );
}
  

Application Task

This function checks error input on the RST pin and reports if the device is working properly or not. It does so every second.

void application_task ( )
{
    if ( stepdown2_digital_read_rst( &stepdown2 ) )
    {
        log_printf( &logger, " * The device works as it should. *\r\n" );
    }
    else 
    {
        log_printf( &logger, " * The device does not work as it should. *\r\n" );
    }

    Delay_1sec( );
} 

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.StepDown2

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.

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