Library Description

Library provides generic functions for reading and writig data to register and getting INT pin status. There is one specific function that reads data from sensor and returns it, which data returns depends on input parameter.

Key functions:

• void oximeter3_generic_write ( uint8_t reg_addr, uint8_t write_data ) - Function for writing data to register address.
• uint8_t oximeter3_generic_read ( uint8_t reg_addr ) - Function for reading data from register address.
• uint16_t oximeter3_read_value ( uint8_t type_macro ) - Function for reading value from sensor.

Examples description

The application is composed of three sections :

• System Initialization - Initialization of I2C module and int pin
• Application Initialization - Check id status, configures device for previous selected mode
• Application Task - Appliction measures values of heart rate or proximity and als value. It depends of selected device mode.

void application_task ( )
{

    if ( OXIMETER3_HEART_RATE == dev_mode )
    {
        rd_val = oximeter3_read_value( OXIMETER3_PROX );
        WordToStr( rd_val, demo_txt );
        mikrobus_logWrite( demo_txt, _LOG_TEXT );
        mikrobus_logWrite( ",", _LOG_LINE );
        Delay_ms( 3 );
    }
    else
    {
        rd_val = oximeter3_read_value( OXIMETER3_PROX );
        WordToStr( rd_val, demo_txt );
        mikrobus_logWrite( " * Proximity: ", _LOG_TEXT );
        mikrobus_logWrite( demo_txt, _LOG_LINE );
        
        rd_val = oximeter3_read_value( OXIMETER3_ALS );
        WordToStr( rd_val, demo_txt );
        mikrobus_logWrite( " * ALS: ", _LOG_TEXT );
        mikrobus_logWrite( demo_txt, _LOG_LINE );
        
        mikrobus_logWrite( "********************", _LOG_LINE );
        
        Delay_ms( 500 );
    }
}

Other mikroE Libraries used in the example:

• I2C
• UART
• Conversions

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.