BPMS-Leshan-with-RPi

Blood Pressure Monitoring System Simulator using the IoT Protocol Lightweight M2M and Leshan server and client implementation in Java,with a Raspberry Pi as a simulated device.

Getting Started

Equipment Used

Laptop
Raspberry Pi  
PCB with sensors and ADC

Libraries-Tools Used

apache-maven-3.3.9-bin.tar.gz
pi4j-core.jar
tsensor.jar

Info

General

The objects used are IPSO compliant, based on the object model specified in OMA LightWeight M2M [1] Chapter 6, Identifiers and Resources.

Pi4j Library

a friendly object-oriented I/O API and implementation libraries for Java Programmers to access the full I/O capabilities of the Raspberry Pi platform

PCB

The PCB used has a Temperature Sensor LM335Z,an Analog to Digital Converter MCP3002 - 2.7V Dual Channel 0-Bit A/D Converter with SPI Serial Interface and some LEDs.

tsensor.jar

The tsensor.jar implements methods for easy interraction with the temperature sensor.

Characteristics of the System

•   The Raspberry Pi is the Lightweight M2M client that sends to the server the temperature value every 5 seconds.
•   The Laptop application is the Lightweight M2M server that can read and observe the sensor value.
•   If the value exceeds a specific limit, the server then sends a message to the client to turn on a LED,the status of which the server can also read and observe. 
•   LwM2M operations used:Write,Read,Observe

Configuring the Laptop

• To get the folder:

git clone https://github.com/nikoshet/BPMS-Leshan-with-RPi.git

Open the project BPMS_leshan_server,compile and run(the main is on BPMS_leshan_server/leshan-server-demo folder).

Configuring the Raspberry Pi

• First do:

sudo apt-get update && sudo apt-get upgrade -y

• To get the folder:

git clone https://github.com/nikoshet/BPMS-Leshan-with-RPi.git

• To install Maven:

wget http://www.mirrorservice.org/sites/ftp.apache.org/maven/maven-3/3.3.9/binaries/apache-maven-3.3.9-bin.tar.gz
sudo tar -xzvf apache-maven-3.3.9-bin.tar.gz -C /opt
sudoedit /etc/profile.d/maven.sh

and enter

export M2_HOME=/opt/apache-maven-3.3.9
export PATH=$PATH:$M2_HOME/bin

Quit and save from the editor. You can test that it is working with

mvn -version

• For the tsensor.jar library:

mvn install:install-file -Dfile=/home/pi/BPMS-Leshan-with-RPi/BPMS_RPi_leshan_client/tsensor.jar -DgroupId=apt.lab.rpi -DartifactId=tempsensor -Dversion=1.0.0 -Dpackaging=jar -DgeneratePom=true

• For the Pi4j library: Download the Pi4J Debian/Raspian installer package (.deb) using your web browser at the following URL: http://get.pi4j.com/download/pi4j-1.2-SNAPSHOT.deb

cd BPMS-Leshan-with-RPi
sudo dpkg -i pi4j-1.2-SNAPSHOT.deb
dpkg-deb -R pi4j-1.2-SNAPSHOT.deb tmp
mvn install:install-file -Dfile=/home/pi/BPMS-Leshan-with-RPi/BPMS_RPi_leshan_client/tmp/opt/pi4j/lib/pi4j-core.jar -DgroupId=com.pi4j -DartifactId=pi4j-core -Dversion=1.2-SNAPSHOT -Dpackaging=jar -DgeneratePom=true

Change the IP of your LwM2M Server

• Get the maven dependencies needed for the project

cd BPMS_RPi_leshan_client/leshan-client-demo
mvn clean install

• To finally start the client

sudo java -jar target/leshan-client-demo-1.0.0-SNAPSHOT-jar-with-dependencies.jar -ip YourServerIp

and replace 'YourServerIp' with the ip of your leshan server.

FYI

LwM2M Protocol

here and here

Pi4j Library

here

For any feedback or questions do not hesitate to contact me.

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Licence

Copyright © 2018 Nick Nikitas

Pi4J ©

Eclipse Distribution License - v 1.0 ©