Library Description

The library covers all the necessary functions to control Pollution click board. Pollution click communicates with the target board via analog ( AN ) pin. This library contains drivers for reading the ADC value of WSP2110 sensor.

Key functions:

• void pollution_enable() - Enable sensor function.
• float pollution_measureLoadVoltage( uint16_t adcValue ) - Measure load voltage form ADC function.
• float pollution_getResistance( uint16_t adcValue ) - Calculate the resistance of the sensor function.

Examples description

The application is composed of three sections:

• System Initialization - Initializes GPIO and LOG structures, sets AN pin as input and RST pin as output.
• Application Initialization -  Initialization driver enables GPIO, enable sensor and initialization ADC, also starts to write log.
• Application Task - (code snippet) This is an example which demonstrates the use of Pollution Click board. Pollution Click reads ADC value. Results are being sent to the Usart Terminal where you can track their changes. All data logs on usb uart change for every 1 sec.

void applicationTask() 
{
    valueADC = pollution_readADC();
    Delay_100ms();
    
    IntToStr( valueADC, logText );   
    mikrobus_logWrite( " ADC value: ", _LOG_TEXT );
    mikrobus_logWrite( logText, _LOG_LINE );
    mikrobus_logWrite( "-------------------", _LOG_LINE );
    Delay_1sec();
}    

Additional Functions :

• void pollution_adcInit() - Function ADC initialization.
• uint32_t pollution_readADC() - Function read ADC value.

Other mikroE Libraries used in the example:

• ADC
• UART​
• Conversion

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