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mikroSDK Library

ECG 4 click

Rating:

5

Author: MIKROE

Last Updated: 2019-03-06

Package Version: 1.0.0.0

mikroSDK Library: 1.0.0.0

Category: Biometrics

Downloaded: 4209 times

Not followed.

License: MIT license  

ECG 4 Click is a complete solution for the development of ECG and Heart-Rate (HR) applications, based on the BMD101, a specialized bio-signal sensing System-on-Chip (SoC).

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  • mikroSDK Library 2.0.0.0
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mikroSDK Library Blog

ECG 4 click

ECG 4 click

Native view of the ECG 4 click board.

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ECG 4 click

ECG 4 click

Front and back view of the ECG 4 click board.

View full image

Library Description

The library performs the ECG and Real-time Heart Rate measurements. For more details check documentation..

Key functions:

  • void ecg4_response_handler_set( void ( *handler )( uint8_t*, uint8_t*, uint8_t*, uint8_t* ) ) - Function sets handler on the function that should be performed, for example, function for results logging.
  • void ecg4_uart_isr( void ) - Function performs the uart interrupt routine, reads a data from uart rx buffer and makes a response from the BMD101 device.
  • T_ECG4_RETVAL ecg4_responseReady( void ) - Function returns 1 when response is ready for reading, or 0 if is not ready.

Examples description

The application is composed of the three sections :

  • System Initialization - Initializes peripherals and pins.
  • Application Initialization - Initializes UART interface, performs a reset of the device and powers up control of Low Drop Out (LDO).
  • Application Task - (code snippet) - Always checks does response ready and, when is ready, processes a response. Note : The Sound library is used to play sound on buzzer every time when R interval on the ECG signal happened. The Sound Play command can make a delay time which is necessary for play command to be performed. If you don't need to make sound on buzzer, please disable the Sound Init and Sound Play functions.
void applicationTask()
{
    resp_ready = ecg4_responseReady();
    
    if (resp_ready == _ECG4_RESPONSE_READY)
    {
        processResponse();
    }
}

Additional Functions :

  • interrupt - Always checks does new data ready for reading from uart rx buffer, and if is it true reads one byte data from uart and makes a response sequence.
  • plotData - Sends a desired data (Raw Data) to the serial plotter.
  • logData - Sends data to the uart terminal and shows results.
  • makeResponse - Pars a response to the buffer.
  • processResponse - Processes a parsed response and makes a decide where response will be showed.

Other mikroE Libraries used in the example:

  • Conversions
  • UART
  • Sound

Additional notes and informations

Depending on the development board you are using, you may need USB UART clickUSB 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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