3D Hall 11 Click

3D Hall 11 Click is a compact add-on board used to detect the strength of a magnetic field in all three dimensions. This board features the TMAG5273, a low-power linear 3D Hall-effect sensor from Texas Instruments. A precision analog signal chain alongside an integrated 12-bit ADC digitizes the measured analog magnetic field values and passes them via the I2C interface to the microcontroller for further processing. It can achieve ultra-high precision at speeds up to 20kSPS for faster and more accurate real-time control and has an integrated temperature sensor available for multiple system functions.

Click Product page

Click library

• Author : Stefan Filipovic
• Date : May 2022.
• Type : I2C type

Software Support

We provide a library for the 3D Hall 11 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 11 Click driver.

Standard key functions :

• c3dhall11_cfg_setup Config Object Initialization function.

  void c3dhall11_cfg_setup ( c3dhall11_cfg_t *cfg );

• c3dhall11_init Initialization function.

  err_t c3dhall11_init ( c3dhall11_t *ctx, c3dhall11_cfg_t *cfg );

• c3dhall11_default_cfg Click Default Configuration function.

  err_t c3dhall11_default_cfg ( c3dhall11_t *ctx );

Example key functions :

• c3dhall11_write_register This function writes a desired data to the selected register by using I2C serial interface.

  err_t c3dhall11_write_register ( c3dhall11_t *ctx, uint8_t reg, uint8_t data_in );

• c3dhall11_read_register This function reads data from the selected register.

  err_t c3dhall11_read_register ( c3dhall11_t *ctx, uint8_t reg, uint8_t *data_out );

• c3dhall11_read_data This function reads new data which consists of X, Y, and Z axis values in mT, and temperature in Celsius. It also reads the angle in Degrees between X and Y by default, and magnitude data as well.

  err_t c3dhall11_read_data ( c3dhall11_t *ctx, c3dhall11_data_t *data_out );

Example Description

This example demonstrates the use of 3D Hall 11 Click board by reading the magnetic flux density from 3 axes, and the angle and magnitude between X and Y axes as well as 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. */
    c3dhall11_cfg_t c3dhall11_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.
    c3dhall11_cfg_setup( &c3dhall11_cfg );
    C3DHALL11_MAP_MIKROBUS( c3dhall11_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == c3dhall11_init( &c3dhall11, &c3dhall11_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    if ( C3DHALL11_ERROR == c3dhall11_default_cfg ( &c3dhall11 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }

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

Application Task

Reads data from the sensor approximately every 100ms and displays the measurement values on the USB UART.

void application_task ( void )
{
    c3dhall11_data_t sensor_data;
    if ( C3DHALL11_OK == c3dhall11_read_data ( &c3dhall11, &sensor_data ) )
    {
        log_printf( &logger, " X-axis: %.1f mT\r\n", sensor_data.x_axis );
        log_printf( &logger, " Y-axis: %.1f mT\r\n", sensor_data.y_axis );
        log_printf( &logger, " Z-axis: %.1f mT\r\n", sensor_data.z_axis );
        log_printf( &logger, " Angle: %.1f Degrees\r\n", sensor_data.angle );
        log_printf( &logger, " Magnitude: %u\r\n", ( uint16_t ) sensor_data.magnitude );
        log_printf( &logger, " Temperature: %.2f Celsius\r\n\n", sensor_data.temperature );
        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.3DHall11

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.