heartrate3  2.0.0.0
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Heart rate 3 Click

Heart rate 3 Click is a mikroBUS add-on board whose functionality is determined by two components: an OSRAM’s SFH7050 pulse oximetry and heart rate monitoring module, and a TI AFE4404 (analong-front-end) IC specialized for bio-sensing.

Click Product page


Click library

  • Author : Jova Stajkovic
  • Date : Dec 2019.
  • Type : I2C type

Software Support

We provide a library for the HeartRate3 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 form compilers IDE(recommended way), or downloaded from our LibStock, or found on mikroE github account.

Library Description

This library contains API for HeartRate3 Click driver.

Standard key functions :

Example key functions :

Examples Description

The demo application shows reflected red, green and ir values.

The demo application is composed of two sections :

Application Init

Initalizes Click driver, resets the device, applies default settings and makes an initial log.

void application_init ( void )
{
log_cfg_t log_cfg;
heartrate3_cfg_t heartrate3_cfg;
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
heartrate3_cfg_setup( &heartrate3_cfg );
HEARTRATE3_MAP_MIKROBUS( heartrate3_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == heartrate3_init( &heartrate3, &heartrate3_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
log_printf( &logger, "----------------------\r\n" );
log_printf( &logger, " Heart rate 3 Click \r\n" );
log_printf( &logger, "----------------------\r\n" );
if ( HEARTRATE3_ERROR == heartrate3_default_cfg ( &heartrate3 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
log_printf( &logger, " Initialised! \r\n" );
log_printf( &logger, "----------------------\r\n" );
log_info( &logger, " Application Task " );
Delay_ms ( 100 );
}

Application Task

This example demonstrates the use of Heart rate 3 board. It is set in default mode,

and reads reflected red, green and ir values and displays the results on USART terminal.

void application_task ( void )
{
err_t error_flag = HEARTRATE3_OK;
if ( heartrate3_check_data_ready ( &heartrate3 ) )
{
error_flag |= heartrate3_read_24bit( &heartrate3, HEARTRATE3_REG_LED2VAL, &led_2 );
error_flag |= heartrate3_read_24bit( &heartrate3, HEARTRATE3_REG_ALED2VAL, &aled_2 );
error_flag |= heartrate3_read_24bit( &heartrate3, HEARTRATE3_REG_LED1VAL, &led_1 );
error_flag |= heartrate3_read_24bit( &heartrate3, HEARTRATE3_REG_ALED1VAL, &aled_1 );
error_flag |= heartrate3_read_24bit( &heartrate3, HEARTRATE3_REG_LED2_ALED2VAL, &led_2_aled_2 );
error_flag |= heartrate3_read_24bit( &heartrate3, HEARTRATE3_REG_LED1_ALED1VAL, &led_1_aled_1 );
if ( HEARTRATE3_OK == error_flag )
{
log_printf( &logger, "%lu;%lu;%lu;%lu;%lu;%lu;\r\n",
led_2, aled_2, led_1, aled_1, led_2_aled_2, led_1_aled_1 );
}
}
}

Note

We recommend using the SerialPlot tool for data visualizing.

The full application code, and ready to use projects can be installed directly form compilers IDE(recommneded) or found on LibStock page or mikroE GitHub accaunt.

Other mikroE Libraries used in the example:

  • MikroSDK.Board
  • MikroSDK.Log
  • Click.HeartRate3

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. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.


HEARTRATE3_REG_LED2_ALED2VAL
#define HEARTRATE3_REG_LED2_ALED2VAL
Definition: heartrate3.h:133
heartrate3_t
Click ctx object definition.
Definition: heartrate3.h:219
HEARTRATE3_REG_LED2VAL
#define HEARTRATE3_REG_LED2VAL
Definition: heartrate3.h:129
HEARTRATE3_ERROR
#define HEARTRATE3_ERROR
Definition: heartrate3.h:79
HEARTRATE3_OK
#define HEARTRATE3_OK
Definition: heartrate3.h:78
HEARTRATE3_REG_LED1_ALED1VAL
#define HEARTRATE3_REG_LED1_ALED1VAL
Definition: heartrate3.h:134
application_task
void application_task(void)
Definition: main.c:88
HEARTRATE3_REG_LED1VAL
#define HEARTRATE3_REG_LED1VAL
Definition: heartrate3.h:131
heartrate3_cfg_t
Click configuration structure definition.
Definition: heartrate3.h:239
heartrate3_check_data_ready
uint8_t heartrate3_check_data_ready(heartrate3_t *ctx)
Check data ready function.
HEARTRATE3_REG_ALED2VAL
#define HEARTRATE3_REG_ALED2VAL
Definition: heartrate3.h:130
heartrate3_write_data
err_t heartrate3_write_data(heartrate3_t *ctx, uint8_t reg_adr, uint32_t wr_data)
Write data function.
application_init
void application_init(void)
Definition: main.c:45
heartrate3_init
err_t heartrate3_init(heartrate3_t *ctx, heartrate3_cfg_t *cfg)
Initialization function.
heartrate3_cfg_setup
void heartrate3_cfg_setup(heartrate3_cfg_t *cfg)
Config Object Initialization function.
HEARTRATE3_MAP_MIKROBUS
#define HEARTRATE3_MAP_MIKROBUS(cfg, mikrobus)
Definition: heartrate3.h:66
heartrate3_default_cfg
err_t heartrate3_default_cfg(heartrate3_t *ctx)
Click Default Configuration function.
heartrate3_read_24bit
err_t heartrate3_read_24bit(heartrate3_t *ctx, uint8_t reg_adr, uint32_t *data_out)
Read 24-bit data function.
HEARTRATE3_REG_ALED1VAL
#define HEARTRATE3_REG_ALED1VAL
Definition: heartrate3.h:132