Oximeter Click

Oximeter Click is a versatile photometric Click board�, perfectly suited for measuring the blood oxygen saturation.

Click Product page

Click library

• Author : MikroE Team
• Date : Dec 2019.
• Type : I2C type

Software Support

We provide a library for the Oximeter 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 Oximeter Click driver.

Standard key functions :

• oximeter_cfg_setup Config Object Initialization function.

  void oximeter_cfg_setup ( oximeter_cfg_t *cfg ); 

• oximeter_init Initialization function.

  err_t oximeter_init ( oximeter_t *ctx, oximeter_cfg_t *cfg );

• oximeter_default_cfg Click Default Configuration function.

  void oximeter_default_cfg ( oximeter_t *ctx );

Example key functions :

• oximeter_write_reg Function writes 16-bit data to the register.

  err_t oximeter_write_reg ( oximeter_t* ctx, uint8_t reg, uint16_t data_in );

• oximeter_set_time_slot_a Function performs the configuration for Time Slot A and enables the interrupt for this Slot.

  err_t oximeter_set_time_slot_a ( oximeter_t* ctx, oximeter_enable_t* dev_enable, uint8_t set_mode );

• oximeter_enable_channels Function determines which channel/channels be enabled.

  err_t oximeter_enable_channels ( oximeter_t* ctx, uint8_t select_channel );

Examples Description

This application collects data from the sensor, calculates it and then logs the result.

The demo application is composed of two sections :

Application Init

Initializes driver and performs the device configuration which puts Time Slot A in enabled mode and LEDX2 (IR diode) to active state. Before the device configuration, the SW reset will be performed and in this way we will put the registers in initial state.

void application_init ( void )
{
    log_cfg_t log_cfg;
    oximeter_cfg_t cfg;

    /** 
     * 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.
    oximeter_cfg_setup( &cfg );
    OXIMETER_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    oximeter_init( &oximeter, &cfg );
    oximeter_default_cfg( &oximeter );

    log_info( &logger, " Application Task " );
}

Application Task

Logs PD1-PD4 data on USB UART

void application_task ( void )
{
    oxim_logs_results();
}  

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.Oximeter

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.