linhall2

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LIN Hall 2 Click

LIN Hall 2 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : Stefan Ilic
• Date : Oct 2023.
• Type : ADC type

Software Support

Example Description

This is an example which demonstrates the use of LIN Hall 2 Click board by measuring magnetic field density and showing it in mT as well as detecting the orientation of the magnet.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.LINHall2

Example Key Functions

• linhall2_cfg_setup Config Object Initialization function.

  void linhall2_cfg_setup ( linhall2_cfg_t *cfg );

• linhall2_init Initialization function.

  err_t linhall2_init ( linhall2_t *ctx, linhall2_cfg_t *cfg );

• linhall2_read_an_pin_voltage LIN Hall 2 read AN pin voltage level function.

  err_t linhall2_read_an_pin_voltage ( linhall2_t *ctx, float *data_out );

• linhal2_set_en_pin LIN Hall 2 set EN pin state function.

  void linhal2_set_en_pin ( linhall2_t *ctx, uint8_t pin_state );

• linhal2_get_flux_density LIN Hall 2 read flux density function.

  err_t linhal2_get_flux_density ( linhall2_t *ctx, float *data_out );

Application Init

The initialization of ADC module and log UART.

void application_init ( void )
{
    log_cfg_t log_cfg;  
    linhall2_cfg_t linhall2_cfg;  

    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );
 
    // Click initialization.
    linhall2_cfg_setup( &linhall2_cfg );
    LINHALL2_MAP_MIKROBUS( linhall2_cfg, MIKROBUS_POSITION_LINHALL2 );
    if ( ADC_ERROR == linhall2_init( &linhall2, &linhall2_cfg ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    linhal2_set_en_pin( &linhall2, LINHALL2_ENABLE_DEVICE );
    
    log_info( &logger, " Application Task " );
}

Application Task

The demo application reads the Magnetic field density and showing it in mT as well as the orientation of the magnet.

void application_task ( void ) 
{
    float mag_flux = 0;
    if ( LINHALL2_OK == linhal2_get_flux_density ( &linhall2, &mag_flux ) ) 
    {
        log_printf( &logger, " Magnetic flux density: %.3f[mT]\r\n", mag_flux );
        if ( 0 < mag_flux )
        {
            log_printf( &logger, " Magnetic field oriented South \r\n\n" );
        }
        else
        {
            log_printf( &logger, " Magnetic field oriented North \r\n\n" );
        }
        Delay_ms ( 1000 );
    }
}

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.

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