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mikroSDK Library

LIN HALL Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.17

mikroSDK Library: 2.0.0.0

Category: Magnetic

Downloaded: 189 times

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License: MIT license  

LIN HALL Click carries an MLX90242 linear Hall sensor IC (with built-in active error correction circuitry) and an MCP3201 12-bit ADC.

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  • mikroSDK Library 1.0.0.0
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LIN HALL Click

LIN HALL Click carries an MLX90242 linear Hall sensor IC (with built-in active error correction circuitry) and an MCP3201 12-bit ADC.

linhall_click.png

Click Product page


Click library

  • Author : MikroE Team
  • Date : Jan 2020.
  • Type : SPI type

Software Support

We provide a library for the LinHall 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 LinHall Click driver.

Standard key functions :

  • Config Object Initialization function.

    void linhall_cfg_setup ( linhall_cfg_t *cfg );

  • Initialization function.

    LINHALL_RETVAL linhall_init ( linhall_t ctx, linhall_cfg_t cfg );

  • Click Default Configuration function.

    void linhall_default_cfg ( linhall_t *ctx );

Example key functions :

  • Read 12-bit data function.

    uint16_t linhall_read_data ( linhall_t *ctx );

Examples Description

This is a example which demonstrates the use of Lin Hall Click board.

The demo application is composed of two sections :

Application Init

Initializes SPI and LOG structures, initialization driver enable's SPI and start write log.


void application_init ( void )
{
    log_cfg_t log_cfg;
    linhall_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_printf( &logger, " Application Init \r\n" );

    //  Click initialization.

    linhall_cfg_setup( &cfg );
    LINHALL_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    linhall_init( &linhall, &cfg );

    log_printf( &logger, "  Lin Hall Click  \r\n" );
    log_printf( &logger, "------------------\r\n" );
    Delay_ms ( 100 );

    value_adc_old = 0;
    sensitivity = 30;
}

Application Task

Read 12-bit ADC value from the MCP3201 chip. Results are being sent to the Usart Terminal where you can track their changes. All data logs on usb uart for aproximetly every 100 ms when the ADC value changes.


void application_task ( void )
{
    value_adc = linhall_read_data( &linhall );

    if ( ( ( value_adc - value_adc_old ) > sensitivity ) && ( ( value_adc_old - value_adc ) > sensitivity ) )
    {
        log_printf( &logger, "  ADC Value : %4d \r\n", value_adc );
        log_printf( &logger, "------------------\r\n" );

        value_adc_old = value_adc;
        Delay_ms ( 100 );
    }
}  

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.LinHall

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.


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