Run Application with one command

[klemie]

Description

Create a bash script that runs everything in one command. Take it one step further and get it to run on startup. Would love to dockerize it but serial and labjack is a no go because there external devices

Acceptance Criteria

• [x] command runs serail-main.py, read-labjack.py, instrumentation-web-socket.py and starts ground support see start_gui.sh
• [x] command runs successfully on start up

QA Notes

Linked issues

Blocked by the PR

[klemie]

@jjderooy made this. but it has seemed to cause a bug or is part of a bug. Now we cant send serial and have instrumentation running at the same time. Might need to investigate this more.

[jjderooy]

Ok I fogor to commit and push the bash file I made on the mini pc but I know what the problem is. Basically, & on the end of a bash command (like the ones starting the python scripts) starts that in a new process in the background. When doing ctrl-c in the terminal shown by running the bash script, it only terminates the foreground process and not the background processes.

We can fix this by traping the ctrl+c input to run a command before exiting the bash script like this:

start.sh

trap ctrl_c INT

function ctrl_c() {
    echo "Trapped CTRL_C"
    kill -INT $PID1 $PID2 $PID3... # Send interrupt signal to each process
}

# Rest of original script here:
python read_labjack.py &
python ws.py &
...

I'll try and test this tmr and push it if it works.

[jjderooy]

I tested this among other variations and cannot for the life of me get it to work. Pressing ctrl+c interrupts the bash process, and then when the signal is trapped, it errors on kill -INT saying the PIDs aren't found. I'll have to do some more testing.

[jjderooy]

Done. I ended up not using bash and instead using python subprocesses.