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mikroSDK Library

MagAccel Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.6

mikroSDK Library: 2.0.0.0

Category: Motion

Downloaded: 186 times

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License: MIT license  

Mag&Accel Click is a compact add-on board representing a moving object and magnetic switch as a single solution. This board features the NMH1000, a Hall-effect magnetic field switch, and the FXLS8974CF, a 3-axis low-g accelerometer, both from NXP Semiconductor.

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mikroSDK Library Blog


MagAccel Click

Mag&Accel Click is a compact add-on board representing a moving object and magnetic switch as a single solution. This board features the NMH1000, a Hall-effect magnetic field switch, and the FXLS8974CF, a 3-axis low-g accelerometer, both from NXP Semiconductor.

magaccel_click.png

Click Product page


Click library

  • Author : Nenad Filipovic
  • Date : Nov 2023.
  • Type : I2C type

Software Support

We provide a library for the MagAccel 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 MagAccel Click driver.

Standard key functions :

  • magaccel_cfg_setup Config Object Initialization function.

    void magaccel_cfg_setup ( magaccel_cfg_t *cfg );
  • magaccel_init Initialization function.

    err_t magaccel_init ( magaccel_t *ctx, magaccel_cfg_t *cfg );
  • magaccel_default_cfg Click Default Configuration function.

    err_t magaccel_default_cfg ( magaccel_t *ctx );

Example key functions :

  • magaccel_get_axes_data This function reads the accelerometer sensor axes data.

    err_t magaccel_get_axes_data ( magaccel_t *ctx, magaccel_axes_t *axes );
  • magaccel_set_op_mode This function sets the desired operating mode of the sensor.

    err_t magaccel_set_op_mode ( magaccel_t *ctx, uint8_t op_mode );
  • magaccel_check_mag_field This function checks the magnetic field y by reading the states of the FLD (AN) pin.

    uint8_t magaccel_check_mag_field ( magaccel_t *ctx );

Example Description

This library contains API for the Mag&Accel Click driver. The library initializes and defines the I2C drivers to write and read data from registers, as well as the default configuration for reading accelerator data.

The demo application is composed of two sections :

Application Init

The initialization of the I2C module, log UART, and additional pins. After the driver init, the app executes a default configuration.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    magaccel_cfg_t magaccel_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.
    magaccel_cfg_setup( &magaccel_cfg );
    MAGACCEL_MAP_MIKROBUS( magaccel_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == magaccel_init( &magaccel, &magaccel_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( MAGACCEL_ERROR == magaccel_default_cfg ( &magaccel ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
    log_printf( &logger, "_________________\r\n" );
}

Application Task

This example demonstrates the use of the Mag&Accel Click board. Measures and displays acceleration data for the X-axis, Y-axis, and Z-axis and the presence of a magnetic field. Results are being sent to the UART Terminal, where you can track their changes.

void application_task ( void ) 
{
    if ( MAGACCEL_DATA_READY == magaccel_check_data_ready( &magaccel ) )
    {
        magaccel_axes_t acc_axis;
        magaccel_get_axes_data( &magaccel, &acc_axis );

        if ( MAGACCEL_DET_MAG_FIELD == magaccel_check_mag_field( &magaccel ) )
        {
            log_printf( &logger, " Presence of a magnetic field\r\n" );
            log_printf( &logger, "_________________\r\n" );
        }

        log_printf( &logger, " Accel X: %.2f mg\r\n", acc_axis.x );
        log_printf( &logger, " Accel Y: %.2f mg\r\n", acc_axis.y );
        log_printf( &logger, " Accel Z: %.2f mg\r\n", acc_axis.z );
        log_printf( &logger, "_________________\r\n" );
        Delay_ms ( 100 );
    }
}

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.MagAccel

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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