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mikroSDK Library

Current Limit Click

Rating:

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.17

mikroSDK Library: 2.0.0.0

Category: Power Switch

Downloaded: 149 times

Not followed.

License: MIT license  

Current Limit Click is a compact add-on board that contains a low-voltage, P-channel MOSFET power switch intended for high-side load switching applications. This board features the MAX890L, a low-resistance power switch with the adjustable, accurate current limit system, and thermal shutdown from Maxim Integrated.

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


Current Limit Click

Current Limit Click is a compact add-on board that contains a low-voltage, P-channel MOSFET power switch intended for high-side load switching applications. This board features the MAX890L, a low-resistance power switch with the adjustable, accurate current limit system, and thermal shutdown from Maxim Integrated.

currentlimit_click.png

Click Product page


Click library

  • Author : Stefan Ilic
  • Date : Jul 2021.
  • Type : SPI type

Software Support

We provide a library for the CurrentLimit 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 from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for CurrentLimit Click driver.

Standard key functions :

  • currentlimit_cfg_setup Config Object Initialization function.

    void currentlimit_cfg_setup ( currentlimit_cfg_t *cfg );
  • currentlimit_init Initialization function.

    err_t currentlimit_init ( currentlimit_t *ctx, currentlimit_cfg_t *cfg );

Example key functions :

  • currentlimit_dev_enable Device enable function.

    void currentlimit_dev_enable ( currentlimit_t *ctx, uint8_t state );
  • currentlimit_set_limit Set Current With Predefined Values Limit function.

    void currentlimit_set_limit ( currentlimit_t *ctx, uint8_t lim_val );
  • currentlimit_set_limit_calc Set Calculated Current Limit function.

    void currentlimit_set_limit_calc ( currentlimit_t *ctx, float lim_val );

Example Description

This example shows capabilities of Current Limit Click board.

The demo application is composed of two sections :

Application Init

Initalizes SPI driver and enables the device.


void application_init ( void ) {
    log_cfg_t log_cfg;  /**< Logger config object. */
    currentlimit_cfg_t currentlimit_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.

    currentlimit_cfg_setup( &currentlimit_cfg );
    CURRENTLIMIT_MAP_MIKROBUS( currentlimit_cfg, MIKROBUS_1 );
    err_t init_flag  = currentlimit_init( &currentlimit, &currentlimit_cfg );
    if ( SPI_MASTER_ERROR == init_flag ) {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }

    currentlimit_dev_enable( &currentlimit, CURRENTLIMIT_ENABLE );
    log_printf( &logger, "    Click  Enabled!    \r\n" );
    log_printf( &logger, "-----------------------\r\n" );
    Delay_ms ( 100 );
    log_info( &logger, " Application Task " );
    display_settings( );
}

Application Task

Reading users input from USART terminal and using it as an index for an array of pre-calculated values that define current limit level.


void application_task ( void ) {
    char inx;
    if ( log_read( &logger, &inx, 1 ) != CURRENTLIMIT_ERROR ) {
        if ( inx >= '1' && inx <= '8' ) {
            currentlimit_set_limit( &currentlimit, lim_val[ inx - 49 ] );
            log_printf( &logger, " Selected mode %d, \r\n Current limit is %d mA \r\n", ( uint16_t ) inx - 48, lim_data[ inx - 49 ] );
            log_printf( &logger, "- - - - - - - - - - - - - - - \r\n" );
        } else { 
            log_printf( &logger, "- - - - - - - - - - - - - - - \r\n" );
            log_printf( &logger, " Data not in range! \r\n" );
            log_printf( &logger, "- - - - - - - - - - - - - - - \r\n" );
            display_settings( );
        }
    }
}

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.CurrentLimit

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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