This microservice is part of the puresec ecosystem. It's supposed to be a handler which gives a signal to one of the gpio ports of the raspberry pi. The notifications are triggered by the master of the system.
First of all you need a raspberry pi with installed linux distribution.
Firstly, clone the repository to your rasbperry pi and change the directory to the created folder. To setup the microservice, you can use the ./bin/setupServer.sh script to install npm, node and other dependencies which are mandatory. If you run grunt successfully and all tests passing, you are ready to start the wiring.
I'm using a standard LED which is turned on if a high value is given to the gpio pin (default pin is 7). A high value will be send to the pin, if the handler receives a message from the master to handle an alarm. The easiest wiring is the following: pin 7 -> LED -> resistor (e.g. 470 Ohm) -> 3.3V
Run the following command to start the microservice:
node src/app.js
If you haven't configured your system to set gpio pins without root rights, you have to start the application with
sudo node src/app.js.
Following options are configurable via env properties:
| Property | Description | Default |
|---|---|---|
| MASTER_URL | Url of the master server | http://localhost:3000 |
| NAME | Name of the handler | Signal Handler |
| DESCRIPTION | Description of the handler | |
| PORT | Port on which the handler runs | 3004 |
| PIN | Pin for LED/sirene/.. | 7 |
| TURN_OFF_DELAY | Turn off delay | 60 |
The start command with properties:
MASTER_URL="http://url/to/master:port" [some other properties] node src/app.js
Feel free to contribute!