pollution

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Pollution Click

Pollution 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 : Mihajlo Djordjevic
• Date : Dec 2019.
• Type : ADC type

Software Support

Example Description

Example code reads ADC value and measures quantity of organic gases in the air.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Pollution

Example Key Functions

• pollution_cfg_setup Config Object Initialization function.

void pollution_cfg_setup ( pollution_cfg_t *cfg );

• pollution_init Initialization function.

err_t pollution_init ( pollution_t *ctx, pollution_cfg_t *cfg );

• pollution_default_cfg Click Default Configuration function.

void pollution_default_cfg ( pollution_t *ctx );

• pollution_generic_read This function read ADC data.

pollution_data_t pollution_generic_read ( pollution_t *ctx );

• pollution_measure_load_voltage This function gets load voltage from read ADC value.

float pollution_measure_load_voltage ( pollution_t *ctx, uint16_t adc_value );

• pollution_get_corrected_resistance This function gets the corrected resistance of the sensor.

float pollution_get_corrected_resistance ( pollution_t *ctx, uint16_t adc_value );

Application Init

Application Init performs Logger and Click initialization.

void application_init ( void )
{
    log_cfg_t log_cfg;
    pollution_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_printf( &logger, "---------------------------------------------\r\n" );
    log_printf( &logger, "------------  Application  Init ------------\r\n" );
    Delay_ms ( 1000 );

    //  Click initialization.

    pollution_cfg_setup( &cfg );
    POLLUTION_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    pollution_init( &pollution, &cfg );
    
    log_printf( &logger, "---------------------------------------------\r\n" );
    log_printf( &logger, "-------------- Pollution Click --------------\r\n" );
    log_printf( &logger, "---------------------------------------------\r\n" );
    Delay_ms ( 1000 );
    
    pollution_default_cfg( &pollution );
    Delay_ms ( 1000 );
    
    log_printf( &logger, "------------ ADC Initializated ------------\r\n" );
    log_printf( &logger, "---------------------------------------------\r\n" );
    Delay_ms ( 1000 );
}

Application Task

This is an example which demonstrates the usage of Pollution Click board. Pollution Click reads ADC value, load voltage from ADC value, and reads
corrected resistance of the sensor where results are being sent to the UART terminal where you can track changes.

void application_task ( void )
{
    pollution_data_t tmp;
    
    tmp = pollution_generic_read( &pollution );
    log_printf( &logger, " ADC value : %d ppm\r\n\n", tmp );
    Delay_ms ( 1000 );
    
    value_volt = pollution_measure_load_voltage( &pollution, tmp );
    log_printf( &logger, " Load voltage : %0.2f V\r\n\n", value_volt );
    Delay_ms ( 1000 );
    
    value_res = pollution_get_corrected_resistance( &pollution, tmp );
    log_printf( &logger, " Corrected resistance : %0.2f kOhm\r\n\n", value_res );
    log_printf( &logger, "---------------------------------------------\r\n\n" );
    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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