ecg7

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ECG 7 Click

ECG 7 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 Filipovic
• Date : Apr 2022.
• Type : ADC/I2C type

Software Support

Example Description

This example demonstrates the use of ECG 7 Click board by reading and displaying the voltage from VOUT BUFF which can be visualized on the SerialPlot application.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.ECG7

Example Key Functions

• ecg7_cfg_setup Config Object Initialization function.

void ecg7_cfg_setup ( ecg7_cfg_t *cfg );

• ecg7_init Initialization function.

err_t ecg7_init ( ecg7_t *ctx, ecg7_cfg_t *cfg );

• ecg7_read_raw_adc This function reads raw ADC value.

err_t ecg7_read_raw_adc ( ecg7_t *ctx, uint16_t *raw_adc );

• ecg7_read_voltage This function reads raw ADC value and converts it to proportional voltage level.

err_t ecg7_read_voltage ( ecg7_t *ctx, float *voltage );

• ecg7_set_vref This function sets the voltage reference for ECG 7 Click driver.

err_t ecg7_set_vref ( ecg7_t *ctx, float vref );

Application Init

Initializes the driver and logger.

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    ecg7_cfg_t ecg7_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.
    ecg7_cfg_setup( &ecg7_cfg );
    ECG7_MAP_MIKROBUS( ecg7_cfg, MIKROBUS_1 );
    err_t init_flag = ecg7_init( &ecg7, &ecg7_cfg );
    if ( ( ADC_ERROR == init_flag ) || ( I2C_MASTER_ERROR == init_flag ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

Reads the output voltage and displays it on the USB UART (SerialPlot) every 4ms approximately.

void application_task ( void )
{
    float ecg7_an_voltage = 0;
    if ( ECG7_OK == ecg7_read_voltage ( &ecg7, &ecg7_an_voltage ) ) 
    {
        log_printf( &logger, "%.3f\r\n", ecg7_an_voltage );
        Delay_ms ( 4 );
    }
}

Note

We recommend using the SerialPlot tool for data visualizing. Please make sure to set up ECG electrodes properly.

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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