run python scripts through a component

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sheershak agarwal

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Jun 9, 2021, 11:01:54 PM6/9/21

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I want to run python scripts or functions from a F-Prime component. I was thinking of doing it exactly like gds, which means connecting fprime and python scripts using socketIp driver and flask. Is this a correct approach or there is an easier way to run python scripts using F-Prime components. (If yes, I also want to pass data between C++ and Python, so can I create external ports?)

lestarch

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Jun 10, 2021, 3:08:50 PM6/10/21

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I assume python is install on the flight computer. In this case there are several simplier options:

1. Call python script with FM_ShellCommand. This can be used to delegate functionality to another shell process, python included. It has limitations (command sizes, shell constraints) but would be quick.

2. Create a python wrapper component that has the C++ interface to F´ as a component, but delegates to calls to python using `os.system` to create the python process.

Your process would work to, but comes with a lot of other requirements: a socket to write between C++ and python, a flask server, API design, ect. Since I assume the FSW (C++) and python are on the same system, you can investigate other more tradition methods for calling python from C++.