Hall Current 16 Click

Hall Current 16 Click is a compact add-on board that contains a precise solution for AC/DC current sensing. This board features the ACS37002, a 400kHz high-accuracy current sensor from Allegro Microsystems. This sensor features pin-selectable gains that can be used to configure the device to one of the four defined sensitivities and corresponding current ranges, increasing design flexibility. In addition, an adjustable overcurrent fast fault provides short-circuit detection.

Click Product page

Click library

• Author : Nenad Filipovic
• Date : Jun 2023.
• Type : SPI type

Software Support

We provide a library for the Hall Current 16 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 Hall Current 16 Click driver.

Standard key functions :

• hallcurrent16_cfg_setup Config Object Initialization function.

  void hallcurrent16_cfg_setup ( hallcurrent16_cfg_t *cfg );

• hallcurrent16_init Initialization function.

  err_t hallcurrent16_init ( hallcurrent16_t *ctx, hallcurrent16_cfg_t *cfg );

• hallcurrent16_default_cfg Click Default Configuration function.

  err_t hallcurrent16_default_cfg ( hallcurrent16_t *ctx );

Example key functions :

• hallcurrent16_get_current Hall Current 16 get current function.

  err_t hallcurrent16_get_current ( hallcurrent16_t *ctx, float *current );

• hallcurrent16_get_voltage Hall Current 16 get voltage function.

  err_t hallcurrent16_get_voltage ( hallcurrent16_t *ctx, float *voltage );

• hallcurrent16_get_ovc_fault Hall Current 16 get overcurrent fault function.

  uint8_t hallcurrent16_get_ovc_fault ( hallcurrent16_t *ctx );

Example Description

This example demonstrates the use of Hall Current 16 Click board by reading and displaying the current measurements.

The demo application is composed of two sections :

Application Init

The initialization of SPI module and log UART. After driver initialization, the app sets the default configuration.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    hallcurrent16_cfg_t hallcurrent16_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.
    hallcurrent16_cfg_setup( &hallcurrent16_cfg );
    HALLCURRENT16_MAP_MIKROBUS( hallcurrent16_cfg, MIKROBUS_1 );
    if ( SPI_MASTER_ERROR == hallcurrent16_init( &hallcurrent16, &hallcurrent16_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( HALLCURRENT16_ERROR == hallcurrent16_default_cfg ( &hallcurrent16 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }    
    log_info( &logger, " Application Task " );
    log_printf( &logger, " -------------------- \r\n" );
    Delay_ms ( 100 );
}

Application Task

The app reads the current measurements [A] and displays the results. Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void )
{
    static float current;
    if ( HALLCURRENT16_OK == hallcurrent16_get_current( &hallcurrent16, &current ) )
    {
        log_printf( &logger, " Current : %.3f A \r\n", current );
    }
    log_printf( &logger, " -------------------- \r\n" );
    Delay_ms ( 1000 );
}

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.HallCurrent16

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. UART terminal is available in all MikroElektronika compilers.