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Heart Rate 7 Click

Heart Rate 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.


Click Library

  • Author : Stefan Ilic
  • Date : Dec 2021.
  • Type : I2C type

Software Support

Example Description

This example showcases ability for device to read Heart Rate 7 Click Board.

Example Libraries

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.HeartRate7

Example Key Functions

  • heartrate7_cfg_setup Config Object Initialization function.
void heartrate7_cfg_setup ( heartrate7_cfg_t *cfg );
  • heartrate7_init Initialization function.
err_t heartrate7_init ( heartrate7_t *ctx, heartrate7_cfg_t *cfg );
  • heartrate7_default_cfg Click Default Configuration function.
err_t heartrate7_default_cfg ( heartrate7_t *ctx );
  • heartrate7_write_reg Heart Rate 7 register write function.
void heartrate7_write_reg( heartrate7_t *ctx, uint8_t reg_addr, uint32_t write_data ); 
  • heartrate7_read_reg Heart Rate 7 register reading function.
uint32_t heartrate7_read_reg( heartrate7_t *ctx, uint8_t reg_addr ); 
  • heartrate7_sw_reset Heart Rate 7 software reset function.
void heartrate7_sw_reset( heartrate7_t *ctx );

Application Init

Configures the micro controller for communication and initializes the Click board.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    heartrate7_cfg_t heartrate7_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.
    heartrate7_cfg_setup( &heartrate7_cfg );
    HEARTRATE7_MAP_MIKROBUS( heartrate7_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == heartrate7_init( &heartrate7, &heartrate7_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( HEARTRATE7_ERROR == heartrate7_default_cfg ( &heartrate7 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
}

Application Task

This section shows how the data is processed and sent to the MikroPlot application.

void application_task ( void ) 
{
    sensor_value = heartrate7_get_aled1_val( &heartrate7 );
    log_printf( &logger, "%lu,%lu \r\n", sensor_value, time );
    time += 10;
    Delay_ms ( 10 );
}

Note

For testing this example application SerialPlot was used. There you can see heart rate graphicly shown.

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.