airquality2

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Air quality 2 Click

Air quality 2 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.

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Click Library

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

Software Support

Example Description

This app measure indoor air quality.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Airquality2

Example Key Functions

• airquality2_cfg_setup Config Object Initialization function.

void airquality2_cfg_setup ( airquality2_cfg_t *cfg );

• airquality2_init Initialization function.

err_t airquality2_init ( airquality2_t *ctx, airquality2_cfg_t *cfg );

• airquality2_generic_read This function reads data.

void airquality2_generic_read ( airquality2_t *ctx, uint8_t *data_buf, uint8_t len );

• airquality2_get_all_data Reads all data information about the indoor air quality.

uint8_t airquality2_get_all_data ( airquality2_t *ctx, uint16_t *value_co2, uint16_t *value_tvoc, int32_t *resistance );

Application Init

Initialization device.

void application_init ( void )
{
    log_cfg_t log_cfg;
    airquality2_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.

    airquality2_cfg_setup( &cfg );
    AIRQUALITY2_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    airquality2_init( &airquality2, &cfg );
    
    // Click calibration 
    uint8_t dummy_buffer[ 9 ];
    airquality2_generic_read( &airquality2, dummy_buffer, AIRQUALITY2_READ_ALL );
    
    log_printf( &logger, "----------------------------------\r\n" );
    log_printf( &logger, "           Air quality 2          \r\n" );
    log_printf( &logger, "----------------------------------\r\n" );
    Delay_ms ( 100 );
}

Application Task

This is a example which demonstrates the use of Air quality 2 Click board. Read all data information about the indoor air quality from register on the iAQ-Core module, display Prediction Value CO2 [ ppm ], Prediction Value TVOC [ ppb ] and Resistance Value. Results are being sent to the Usart Terminal where you can track their changes. All data logs on usb uart for aproximetly every 5 sec.

void application_task ( void )
{
    uint8_t status_info;
    uint16_t value_co2;
    uint16_t value_tvoc;
    int32_t resistance;

    status_info = airquality2_get_all_data( &airquality2, &value_co2, &value_tvoc, &resistance );
    Delay_100ms( );

    if ( status_info == AIRQUALITY2_STATUS_OK )
    {
        log_printf( &logger, "       | Status : OK     |\r\n" );
    }
    if ( status_info == AIRQUALITY2_STATUS_BUSY )
    {
        log_printf( &logger, "       | Status : BUSY   |\r\n" );
    }
    if ( status_info == AIRQUALITY2_STATUS_ERROR )
    {
        log_printf( &logger, "       | Status : ERROR  |\r\n" );
    }
    if ( status_info == AIRQUALITY2_STATUS_RUNIN )
    {
        log_printf( &logger, "       | Status : RUNIN  |\r\n" );
    }

    log_printf( &logger, "----------------------------------\r\n" );

    log_printf( &logger, " CO2        : %u [ ppm ] \r\n", value_co2 );

    log_printf( &logger, " TVOC       : %u [ ppb ] \r\n", value_tvoc );

    log_printf( &logger, " Resistance : %ld [ Ohm ] \r\n", resistance );

    log_printf( &logger, "----------------------------------\r\n" );

    Delay_1sec( );
    Delay_1sec( );
    Delay_1sec( );
    Delay_1sec( );
    Delay_1sec( );
}

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.

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