OBC simulator extensions

[tstana]

Extensions to the Arduino-based OBC simulator should be implemented as independently as possible from the actual OBC simulator code. The latter resides in a separate repository and is generated (as of the time of writing of this issue) using a config file. The OBC simulator repository may change at a later date, at which point CUBES will need to regenerate the code for its OBC simulator. At that point, adding the extensions to the the newly-generated OBC simulator code may lead to headaches.

The process should be simplified by:

1. Moving extension code outside of code generated for the OBC simulator, e.g., in new files called extension.c and extension.h;
2. Modifying the main flie of the OBC simulator to contain calls to functions in extension.h;

All of these should be added to the obcsim/ folder of the repository.

[tstana]

Thinking about this problem a bit more, maybe the best way to go is to have this extensibility feature supported by the msp-simulator repository directly.

I shall open up an issue there to see if this is possible to implement.

Comments welcome!

[tstana]

See discussion here:

https://gitlab.com/kth-mist/msp-simulator/issues/5

[tstana]

Closing issue, CUBES has implemented their custom extensions under the proto-cubes-obc repository.