airquality

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Air quality Click

Air quality 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 : Jelena Milosavljevic
• Date : Jun 2021.
• Type : ADC type

Software Support

Example Description

The demo application shows the reading of the adc values given by the sensors.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Airquality

Example Key Functions

• airquality_cfg_setup Config Object Initialization function.

void airquality_cfg_setup ( airquality_cfg_t *cfg );

• airquality_init Initialization function.

err_t airquality_init ( airquality_t *ctx, airquality_cfg_t *cfg );

• airquality_read_an_pin_value This function reads results of AD conversion of the AN pin.

err_t airquality_read_an_pin_value ( airquality_t *ctx, uint16_t *data_out );

• airquality_read_an_pin_voltage This function reads results of AD conversion of the AN pin and converts them to proportional voltage level.

err_t airquality_read_an_pin_voltage ( airquality_t *ctx, float *data_out );

Application Init

Configuring Clicks and log objects.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    airquality_cfg_t airquality_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.

    airquality_cfg_setup( &airquality_cfg );
    AIRQUALITY_MAP_MIKROBUS( airquality_cfg, MIKROBUS_1 );
    if ( airquality_init( &airquality, &airquality_cfg ) == ADC_ERROR ) {
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }
    airquality_default_cfg ( &airquality );
    log_info( &logger, " Application Task " );
}

Application Task

Reads the adc value and prints in two forms (DEC and HEX).

void application_task ( void ) 
{
    uint16_t airquality_an_value = 0;

    if ( airquality_read_an_pin_value ( &airquality, &airquality_an_value ) != ADC_ERROR ) {
        log_printf( &logger, " ADC Value : %u\r\n", airquality_an_value );
    }

    float airquality_an_voltage = 0;

    if ( airquality_read_an_pin_voltage ( &airquality, &airquality_an_voltage ) != ADC_ERROR ) {
        log_printf( &logger, " AN Voltage : %.3f[V]\r\n\n", airquality_an_voltage );
    }

    Delay_ms ( 1000 );
}

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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