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mikroSDK Library

EEG Click

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Author: MIKROE

Last Updated: 2024-10-31

Package Version: 2.1.0.13

mikroSDK Library: 2.0.0.0

Category: Biometrics

Downloaded: 289 times

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License: MIT license  

EEG Click is a Click board™ that allows monitoring of brain activity. Although not suitable for clinical examination, it is quite sufficient to allow some insight into brain activity. EEG Click is equipped with a high-sensitivity circuit which amplifies faint electrical signals from the brain, allowing them to be sampled by a host MCU.

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  • mikroSDK Library 1.0.0.0
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mikroSDK Library Blog


EEG Click

EEG Click is a Click board™ that allows monitoring of brain activity. Although not suitable for clinical examination, it is quite sufficient to allow some insight into brain activity. EEG Click is equipped with a high-sensitivity circuit which amplifies faint electrical signals from the brain, allowing them to be sampled by a host MCU.

eeg_click.png

Click Product page


Click library

  • Author : Jelena Milosavljevic
  • Date : Aug 2021.
  • Type : ADC type

Software Support

We provide a library for the EEG 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 EEG Click driver.

Standard key functions :

  • eeg_cfg_setup Config Object Initialization function.

    void eeg_cfg_setup ( eeg_cfg_t *cfg );
  • eeg_init Initialization function.

    err_t eeg_init ( eeg_t *ctx, eeg_cfg_t *cfg );

Example key functions :

  • eeg_read_an_pin_value This function reads results of AD conversion of the AN pin.

    err_t eeg_read_an_pin_value ( eeg_t *ctx, uint16_t *data_out );
  • eeg_read_an_pin_voltage This function reads results of AD conversion of the AN pin and converts them to proportional voltage level.

    err_t eeg_read_an_pin_voltage ( eeg_t *ctx, float *data_out );

Example Description

This example demonstrates the use of EEG Click board.

The demo application is composed of two sections :

Application Init

Initializes Click board.


void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    eeg_cfg_t eeg_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 " );
    log_printf( &logger, " ----------------------------------------------\r\n" );
    log_printf( &logger, "                ***EEG Click***               \r\n" );
    log_printf( &logger, "----------------------------------------------\r\n" );
    Delay_ms ( 1000 );
    Delay_ms ( 1000 );

    // Click initialization.
    eeg_cfg_setup( &eeg_cfg );
    EEG_MAP_MIKROBUS( eeg_cfg, MIKROBUS_1 );
    if ( ADC_ERROR == eeg_init( &eeg, &eeg_cfg ) ){
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

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

Application Task

Reads ADC value and sends results on serial plotter every 5 ms.


void application_task ( void ) 
{
    uint16_t eeg_an_value = 0;

    if ( eeg_read_an_pin_value( &eeg, &eeg_an_value ) != ADC_ERROR ) {
        log_printf( &logger, " %u,%lu\r\n", eeg_an_value, time );
        Delay_ms ( 5 );
        time += 5;
    }
}

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.EEG

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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