Major part of the program is implemented in Node-RED (use with node version >= 15). Only the mock RuuviTag TCP socket client & the mock OPC UA server are implemented in small python scripts.
node-red-dashboard and node-red-contrib-opcua has to be installed in order for this project to work properly. To install mentioned packages run:
npm install node-red-contrib-opcua && npm install node-red-dashboard
Python3 is required to run the mock TCP client & OPC UA server. OPC UA server requires OPC-UA library for python which you can install by running:
python3 -m pip install opcua
Start Node-RED by issuing command: node-red. Now you can view the Node-RED environment by going to http://127.0.0.1:1880/ . From there you can import the flows.json file and deploy it.
Remember to toggle on the data sending in the UI! (UI's address is http://127.0.0.1:1880/ui/)
Next start the ocpua mock server by running the opcua-server.py in another terminal by issuing command:
python3 opcua-server.py
Then you can start the TCP socket client by running following command in another terminal:
python3 ruuvitag_mock_tcp_client.py.
In that terminal window you can start manually inputing mock values that normally would be gotten from the RuuviTag-sensor. If everything works correctly those same values should also be displayed in the terminal you launched the OPC UA (as they get sent through the node-red environment).
If the temperature data you input in the TCP client terminal doesn't show up in the UI, you probably have to restart the TCP client.
If the temperature data shows up in the UI, but doesn't show up in the OPC UA terminal, then you should redeploy the Node-RED flow. After redeploying it should show up in the OPC UA.