3D Hall 2 Click

3D Hall 2 Click is a very accurate magnetic field sensing Click board™, used to sense the magnetic field strength in three perpendicular axes. It relies on a TLV493D-A1B6, a low power 3D magnetic sensor from Infineon.

Click Product page

Click library

• Author : MikroE Team
• Date : Dec 2019.
• Type : I2C type

Software Support

We provide a library for the 3d Hall 2 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for 3d Hall 2 Click driver.

Standard key functions :

• c3dhall2_cfg_setup Config Object Initialization function.

  void c3dhall2_cfg_setup ( c10x10rgb_cfg_t *cfg );

• c3dhall2_init Initialization function.

  err_t c3dhall2_init ( c3dhall2_t *ctx, c3dhall2_cfg_t *cfg );

• c3dhall2_default_cfg Default configuration initialization function.

  err_t c3dhall2_default_cfg( c3dhall2_t *ctx );

Example key functions :

• c3dhall2_read_data This function reads data from register.

  err_t c3dhall2_read_data ( c3dhall2_t *ctx, uint8_t *data_buf, uint16_t len );

• c3dhall2_get_axis_temp_data This function gets temperature and axis data.

  err_t c3dhall2_get_axis_temp_data ( c3dhall2_t *ctx, float *axis_data, float *temp_data );

• c3dhall2_configuration This function configures the chip for measurement.

  err_t c3dhall2_configuration ( c3dhall2_t *ctx, uint8_t settings1, uint8_t settings2 );

Examples Description

This example reads X/Y/Z hall axis and temperature data and converts it to human readable format.

The demo application is composed of two sections :

Application Init

Initializes the driver and configures the Click board.

void application_init ( void )
{
    log_cfg_t log_cfg;
    c3dhall2_cfg_t cfg;

    /** 
     * 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.
    c3dhall2_cfg_setup( &cfg );
    C3DHALL2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    c3dhall2_init( &c3dhall2, &cfg );
    c3dhall2_default_cfg( &c3dhall2 );
}

Application Task

Reads X/Y/Z hall axis and Temperature data. All data logs on the USBUART every 200ms.

void application_task ( void )
{
    float xyz_axis[ 3 ] = { 0 };
    float temperature = 0;
    if ( C3DHALL2_OK == c3dhall2_get_axis_temp_data( &c3dhall2, &xyz_axis[ 0 ], &temperature ) )
    {
        log_printf( &logger, " Axis X: %.2f mT\r\n", xyz_axis[ 0 ] );
        log_printf( &logger, " Axis Y: %.2f mT\r\n", xyz_axis[ 1 ] );
        log_printf( &logger, " Axis Z: %.2f mT\r\n", xyz_axis[ 2 ] );
        log_printf( &logger, " Temperature: %.2f C\r\n\n", temperature );
        Delay_ms ( 200 );
    }
}

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.3dHall2

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.