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mikroSDK Library

3D Hall 14 Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.2

mikroSDK Library: 2.0.0.0

Category: Magnetic

Downloaded: 90 times

Not followed.

License: MIT license  

3D Hall 14 Click is a compact add-on board designed for high-precision position sensing in various applications. This board features the MLX90394, a 3-axis magnetometer from Melexis based on the Triaxis® Hall technology. The MLX90394 offers low power consumption, excellent noise performance, and flexible measurement modes, including intelligent wake-up functions for efficient power management. It communicates via a standard 2-Wire I2C interface and supports fast-mode frequencies up to 1MHz.

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mikroSDK Library Blog


3D Hall 14 Click

3D Hall 14 Click is a compact add-on board designed for high-precision position sensing in various applications. This board features the MLX90394, a 3-axis magnetometer from Melexis based on the Triaxis® Hall technology. The MLX90394 offers low power consumption, excellent noise performance, and flexible measurement modes, including intelligent wake-up functions for efficient power management. It communicates via a standard 2-Wire I2C interface and supports fast-mode frequencies up to 1MHz.

3dhall14_click.png

Click Product page


Click library

  • Author : Stefan Filipovic
  • Date : Apr 2024.
  • Type : I2C type

Software Support

We provide a library for the 3D Hall 14 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 3D Hall 14 Click driver.

Standard key functions :

  • c3dhall14_cfg_setup Config Object Initialization function.

    void c3dhall14_cfg_setup ( c3dhall14_cfg_t *cfg );
  • c3dhall14_init Initialization function.

    err_t c3dhall14_init ( c3dhall14_t *ctx, c3dhall14_cfg_t *cfg );
  • c3dhall14_default_cfg Click Default Configuration function.

    err_t c3dhall14_default_cfg ( c3dhall14_t *ctx );

Example key functions :

  • c3dhall14_get_magnetic_flux This function reads the raw values of X, Y, and Z axis and converts them to magnetic flux data in microTesla.

    err_t c3dhall14_get_magnetic_flux ( c3dhall14_t *ctx, float *x_axis, float *y_axis, float *z_axis );
  • c3dhall14_get_temperature This function reads the raw temperature value and converts it to Celsius.

    err_t c3dhall14_get_temperature ( c3dhall14_t *ctx, float *temperature );
  • c3dhall14_set_range This function sets the magnetic flux measurement range.

    err_t c3dhall14_set_range ( c3dhall14_t *ctx, uint8_t range );

Example Description

This example demonstrates the use of 3D Hall 14 Click board by reading the magnetic field strength from 3 axes and the sensor internal temperature.

The demo application is composed of two sections :

Application Init

Initializes the driver and performs the Click default configuration.


void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    c3dhall14_cfg_t c3dhall14_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.
    c3dhall14_cfg_setup( &c3dhall14_cfg );
    C3DHALL14_MAP_MIKROBUS( c3dhall14_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == c3dhall14_init( &c3dhall14, &c3dhall14_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( C3DHALL14_ERROR == c3dhall14_default_cfg ( &c3dhall14 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
}

Application Task

Reads data from the sensor and displays them on the USB UART every 200ms.

void application_task ( void )
{
    float x_axis = 0;
    float y_axis = 0;
    float z_axis = 0;
    float temperature = 0;
    if ( C3DHALL14_OK == c3dhall14_get_magnetic_flux ( &c3dhall14, &x_axis, &y_axis, &z_axis ) )
    {
        log_printf( &logger, " X-axis: %.1f uT\r\n", x_axis );
        log_printf( &logger, " Y-axis: %.1f uT\r\n", y_axis );
        log_printf( &logger, " Z-axis: %.1f uT\r\n", z_axis );
    }
    if ( C3DHALL14_OK == c3dhall14_get_temperature ( &c3dhall14, &temperature ) )
    {
        log_printf( &logger, " Internal temperature: %.2f C\r\n\n", temperature );
    }
}

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.3DHall14

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.


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