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RaspUAServer

RaspUAServer is a simple implementation of an OPC UA Server using the stack for Node.js provided by Node-OPCUA.

This server exposes in the address space an object rapresenting che current device running the server. Such an object owns four variables representing:

  • the architecture of the CPU;
  • the percentage of free memory;
  • the temperature of the CPU;
  • the status of the GPIO 4 (Pin 7 - i used it to turn on/off a LED);

NB: this application works only on a Raspberry Pi

In order to run the server, clone the repository and open a terminal having current path (pwd) in the project folder. Be sure that Node.Js is instaled in your system. Finally, run the commands:

npm install
node sample_server.js

The server has been evaluated on a Raspberry Pi model B. RaspUAServer can be run in all platform where Node.js is suported, but only on a Raspberry Pi a variable named CPU_Temperature will be exposed.