Introduction

The interlock folder contains P1AM-100 code (which is Arduino MKR1000).

The Listen2Arduino.py is a script for listening the P1AM-100 output (via USB), and put the status, the tritium, Vaccum, and SubPump reading to the fsunuc.physics.fsu.edu database. It will also save the status into ~/data.txt. The data.txt is used for the statusDisplay to run the local dashboard.

A brief diagram to show the data flow

P1AM --> Listen2Arduino.py 
              +---> data.txt --> statusDisplay
              +---> database

Setup using Arduino IDE 1.X

The P1AM.h library is needed.

PA1M.h
Ethernet.h
liquidCrystal.h

also, need to add board MKR1000, use the baord manger, search for

Arduino SAMD Boards

Setup the Raspberry Pi

need to install the python package for InfluxDB-client

sudo python -m pip install --break-system-package inlfuxdb-client

influx_token.txt

the influx database need a token for access. the token for the interlock can be found in https://fsunuc.physics.fsu.edu/elog/LabMaintenance/7

interlock database at fsunuc.physics.fsu.edu

database name : interlock

Setup system service for the Listen2Arduino.py

In order to make the Listen2Arduino.py to run at startup and as a background daemon, copy the listen2P1AM.service to /etc/systemd/system/

run

sudo systemctl daemen-reload
sudo systemctl enable listen2P1AM.service`
sudo systemctl start listen2P1AM.service`

make a symbolic link to ~/data.txt

Once the Listen2Arduino.py is running, it will create ~/data.txt, so that the local status display can read and update the status. create a symbolic link

cd ~/Multi-SNICS_Interlock/statusDisplay/
ln -s ~/data.txt .

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