Abstract

simple OPCUA-Server using OPEN62541
this OPCUA-Server received 3 different sensor information from arduino using serial USB connection.

Screenshots

device( arduino & raspberry )

OPCUA client access test

Requirement device

• raspberryPi 2 or 3 ( https://www.raspberrypi.org/downloads/raspbian/ )
• Arduino with 3 sensor ( Analog Ambient light sensor, Analog Sound sensor, DHT11 sensor)

Using open62541

A general introduction to OPC UA and the open62541 documentation can be found at http://open62541.org/doc/current. Past releases of the library can be downloaded at https://github.com/open62541/open62541/releases. To use the latest improvements, download a nightly build of the single-file distribution (the entire library merged into a single source and header file) from http://open62541.org/releases. Nightly builds of MSVC binaries of the library are available here.

** Building the Library reference ( https://open62541.org/doc/0.2/building.html )

• sudo apt-get install liburcu-dev # for multithreading
• sudo apt-get install check # for unit tests
• sudo apt-get install python-sphinx graphviz # for documentation generation
• sudo apt-get install python-sphinx-rtd-theme # documentation style

Pre-condition

wiringPi library supported rasberryPi serial transport, pi-thread function .. etc

** wiringPi build & install

• sudo apt-get update

• sudo apt-get upgrade

• sudo apt-get install git-core

• git clone git://git.drogon.net/wiringPi

• cd wiringPi ( move wiringPi directory )

• sudo ./build ( build/ install )

• gpio -v ( check version )

Server Implementation

** server source code -> opcua-sensor-server/opcua_server_src/opcua_server_3sensor.c

1. Connect Arduino & raspberryPi by using serial-USB cable

• included Arduino source code ( Arduino/ 3sensor_check )
• included dht11(temp/humidity sensor library) library same folder

2. opcua server run

• git clone folder
• mkdir build
• cd build
• cmake ..
• make

**select additional features

• ccmake ..

  • (UA_ENABLE_AMALGAMATION : ON --> create open62541.c)
  • ( ccmake command not found : sudo apt-get install cmake-curses-gui )

• make (created check : libopen62541.a, open62541.c )

• build: gcc -std=c99 open62541.c opcua_server_3sensor.c -o opcua_server -lwiringPi

  • opcua_server_3sensor.c is included in 'opcua_server_src' folder

• ./opcua_server

test