Example Code for Raspberry Pi-Get Data by Interrupt

Hardware Preparation

• Raspberry Pi 4 Model B - 4GB (or similar) x 1
• Fermion: NS160 Air Quality Sensor x1
• Wires

Software Preparation

• ENS160 Air Quality Sensor Python Library
• Download RASPBIAN Official OS

Wiring Diagram

The left is connection for I2C, the right is for SPI.

Other Preparation Work

Step 1. Enable Raspberry Pi I2C.(Skip this step if it is already enabled) Open terminal and input the following commands and press "Enter":

pi@raspberrypi:~ $ sudo raspi-config

Then use the UP/Down keys to select "Interfacing Options", press Enter, select "P5 I2C" and press Enter to comfirm "Yes". Restart the Pi board.

Step 2. To install Python dependency library and git, the Raspberry Pi needs to be connected to the Internet. Skip this step if already installed. In the terminal, input the following commands and press Enter:

pi@raspberrypi:~ $ sudo apt-get update pi@raspberrypi:~ $ sudo apt-get install build-essential python-dev python-smbus git

Step 3. Download the ENS160 driver library. In the terminal, type the following commands and press Enter:

pi@raspberrypi:~ $ cd Desktop/ pi@raspberrypi:~/Desktop $ git clone https://github.com/DFRobot/DFRobot_ENS160

Sample Code

In the terminal, input the following commands and press Enter to run the code:

pi@raspberrypi:~/Desktop $ cd DFRobot_ENS160/python/raspberrypi/examples/interrupt_data_drdy 

pi@raspberrypi:~/Desktop/DFRobot_ENS160/python/raspberrypi/examples/interrupt_data_drdy $python interrupt_data_drdy.py

Result

Please let the sensor run for 1 hour first to ensure the accuracy of the data when using it for the first time, and then perheat for 3 minute each time it is used. You also need to set the current ambient temperature and humidity to assist in detecting result.