mikroelektronika / ozone_2_click

Library for MQ131.

---

Ozone_2 Click

• CIC Prefix : OZONE2
• Author : MikroE Team
• Verison : 1.0.0
• Date : Mar 2018.

---

Software Support

We provide a library for the Ozone_2 Click on our LibStock page, as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Library Description

Library carries functions for initialization and reading digital value from MCP3351. Coversion of value to PPM is not covered by the library because it depends on measurement environment.

Key functions :

• uint32_t ozone2_read() - Reads digital value from MCP3351 ADC circuit

Examples Description

The application is composed of three sections :

• System Initialization - GPIO and SPI module initialization
• Application Initialization - SPI Driver initialization
• Application Task - reading raw digital value from ADC each one second and displaying it via UART terminal

void applicationTask()
{
    readValue = ozone2_read();
    LongWordToStr(readValue,text);
    mikrobus_logWrite("Read Value: ",_LOG_TEXT);
    mikrobus_logWrite(text,_LOG_LINE);
    Delay_ms(1000);
}

Keep on mind that this is raw measurement which should be converted to exact Ozone PPM value using formulas provided by circuit producer. Conversion to PPM depends on few conditions - more details can be found on datasheet.

The full application code, and ready to use projects can be found on our LibStock page.

mikroE Libraries used in the example:

• UART
• SPI
• 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.

---

---