ECG 5 Click

ECG 5 Click can be used for the development of ECG and Heart-Rate (HR) applications. The Click board™ features the AD8232, an integrated bio-signal front end. This IC has many features necessary for providing accurate ECG measurements, including very high common-mode rejection ratio, high gain with DC blocking capability, adjustable high-pass and low-pass filters, integrated right leg drive (RLD), etc.

Click Product page

Click library

• Author : Stefan Ilic
• Date : Aug 2021.
• Type : ADC type

Software Support

We provide a library for the ECG5 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 ECG5 Click driver.

Standard key functions :

• ecg5_cfg_setup Config Object Initialization function.

  void ecg5_cfg_setup ( ecg5_cfg_t *cfg );

• ecg5_init Initialization function.

  err_t ecg5_init ( ecg5_t *ctx, ecg5_cfg_t *cfg );

Example key functions :

• ecg5_set_mode Mode Setting function.

  void ecg5_setMode( ecg5_t *ctx, uint8_t state );

• ecg5_check_lod_negative LOD- Checking function.

  err_t ecg5_check_LOD_negative( ecg5_t *ctx );

• ecg5_check_lod_positive LOD+ Checking function.

  err_t ecg5_check_lod_positive( ecg5_t *ctx );

Example Description

This is an example which demonstrates the use of ECG 5 Click board.

The demo application is composed of two sections :

Application Init

Initializes ADC and GPIO.

void application_init ( void ) {
    log_cfg_t log_cfg;  /**< Logger config object. */
    ecg5_cfg_t ecg5_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.
    ecg5_cfg_setup( &ecg5_cfg );
    ECG5_MAP_MIKROBUS( ecg5_cfg, MIKROBUS_1 );
    if ( ADC_ERROR == ecg5_init( &ecg5, &ecg5_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 ecg5_an = 0;
    if ( ecg5_read_an_pin_value( &ecg5, &ecg5_an ) == ADC_SUCCESS ) {
        log_printf( &logger, " %u,%lu\r\n ", ecg5_an, time );
    }
    time += 5;
    Delay_ms ( 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.ECG5

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.