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mikroSDK Library

Air quality 5 click

Rating:

10

Author: MikroElektronika Team

Last Updated: 2018-06-12

Category: Gas

Downloaded: 1179 times

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License: MIT license  

Air quality 5 click is a triple MOS sensor on a single Click board, which can detect gas pollution for a number of different gases. The onboard sensor is specially designed to detect the pollution from automobile exhausts as well as the gas pollution from the industrial or agricultural industry.

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mikroSDK Library Blog

Air quality 5 click

Air quality 5 click

Native view of the Air quality 5 click board.

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Air quality 5 click

Air quality 5 click

Front and back view of the Air quality 5 click board.

View full image

Library Description

The library initializes and defines the I2C bus driver and drivers that offer a choice for writing data in registers and reading data from registers. The library includes functions for full initialization of the chip, reading 3 sensors (CO, NH3 and NO2 data). The user can check the state of the RDY pin indicating if that data is ready for reading.

Key functions:

  • void airq5_setConfiguration(uint16_t config) - The functions for configuration.
  • uint16_t airq5_readSensorData(uint16_t channel_data) - The functions for reading the sensor data.

Example description

The application is composed of three sections:

  • System Initialization -  Initializes I2C module and sets INT pin as INPUT.
  • Application Initialization - Initializes driver init and configuration chip.
  • Application Task - (code snippet) - Reads the values of CO, NH3 and NO2 sensor and logs data on USBUART every 500ms.
void applicationTask()
{
 NO2_sensorData = airq5_readSensorData(_AIRQ5_DATA_CHANNEL_NO2);
 NH3_sensorData = airq5_readSensorData(_AIRQ5_DATA_CHANNEL_NH3);
 CO_sensorData = airq5_readSensorData(_AIRQ5_DATA_CHANNEL_CO);

 IntToStr(NO2_sensorData, dataText);
 mikrobus_logWrite(" NO2 data: ", _LOG_TEXT);
 mikrobus_logWrite(dataText, _LOG_LINE);

 IntToStr(NH3_sensorData, dataText);
 mikrobus_logWrite(" NH3 data: ", _LOG_TEXT);
 mikrobus_logWrite(dataText, _LOG_LINE);

 IntToStr(CO_sensorData, dataText);
 mikrobus_logWrite(" CO data: ", _LOG_TEXT);
 mikrobus_logWrite(dataText, _LOG_LINE);

 mikrobus_logWrite(" -------- ", _LOG_LINE);
 Delay_ms( 500 );
}


Other MikroElektronika libraries used in the example:

  • Conversions
  • I2C
  • UART

Additional notes and information

Depending on the development board you are using, you may need USB UART clickUSB 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.

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