rpi-drivers

RPI Drivers

Collection of drivers for various I2C sensors written in Java using pi4j.

• Raspberry Pi compatibility: 3, 4, zero, zero W, zero 2W
• Raspberry Pi OS: April 4th 2022, 32-bit, 64-bit

Supported I2C sensors:

• BMP180 - Bosch I2C temperature and pressure sensor. reference, datasheet.
• BME280 - Bosch I2C temperature, humidity and pressure sensor. reference, datasheet.
• HTU21D - I2C relative humidity and temperature sensor. reference, datasheet.
• PCF8591 - I2C 8-bit 4-channel AD Converter. reference, datasheet.
• ADS1115 - I2C 16-bit 4-channel AD Converter. reference, datasheet.
• BH1750 - I2C Light Intensity Sensor. reference, datasheet.

Use with maven

<dependency>
    <groupId>one.microproject.rpi</groupId>
    <artifactId>rpi-drivers</artifactId>
    <version>2.1.1</version>
</dependency>

Use with gradle

implementation 'one.microproject.rpi:rpi-drivers:2.1.1'

Compile and Test on RaspberryPI

1. Install java on Raspberry PI.

   sudo apt install openjdk-11-jdk
   

2. Enable I2C on raspberry pi using sudo raspi-config.
3. Make sure I2C sensors are connected to Raspberry PI device.

   i2cdetect -y 1
   

   Check reference documentation for I2C sensors.
4. Build driver library package (on PC). (requires java 11 & gradle 7.3 or later):

   gradle clean build test publishToMavenLocal installDist distZip
   

5. Copy binary build to Raspberry PI device:

   scp build/distributions/rpi-drivers-2.1.1.zip pi@<raspberry-pi>:/home/pi/
   

6. Run tests on Raspberry PI device, select only tests for connected sensors:

   unzip rpi-drivers-2.1.1.zip
   cd rpi-drivers-2.1.1/bin
   ./rpi-drivers ALL | ADS1115 | BME280 | BMP180 | HTU21D | PCF8591 | BH1750