DS18B20WiringPi

Bitbanging DS18B20 sensor through WiringPi

Built on top of @danjperron-s:

https://github.com/danjperron/BitBangingDS18B20

I simplified it to a bare minimum. Changed it over to WiringPi and added Java Binding. Tested and working on Raspberry Pi3 and NanoPi Neo.

Use case:

This code enables you to place DS18B20 sensor on any pin on all devices that support WiringPi.

Please notify me if you test this code on any new devices.

Pick a Pin:

Change this value in c_test.c and TempCReader.c:

#define DS18B20_PIN_NUMBER 7 

Compiling:

NOTE: These instructions are originally for NanoPi Neo. With Oracle JDK installed.

Just C version:

Copy test_c.c to your device and run:

gcc -Wall -o test test_c.c -lwiringPi -lpthread

To run use:

./test

Java Version:

Copy files from java folder to your device.

To compile run:

gcc -fPIC -I"$JAVA_HOME/include" -I"$JAVA_HOME/include/linux" -shared -o libds18temp.so TempCReader.c -lwiringPi -lpthread

This will give you libds18temp.so. You can place this file in java library path or any folder just make sure to change to correct path in TempSensorJNI.java

After changing the path compile java file and run it.