nasa / tvsio-demo

A sample project for integrating TVS-IO into cFS

TVS-IO Demo

This is a sample Core Flight Software (cFS) project to demonstrate how Trick Variable Server IO can be used.

TVS-IO is included as a submodule at apps/tvs_io

Building

CFS¹

TODO: Add brief CFS build directions

Trick²

This project includes two very basic Trick simulations. One is a producer the other is a consumer. TVS-IO connects to the Trick Variable Server of each sim, reading and writing values as defined by the *.tvm files. These sims are located in the trick_sims folder

1. SIM_temp

   This sim is extremely simple. All it does is to count up and periodically reset back to 0. This value is mapped in a *.tvm file to be read by TVS-IO and sent to SIM_range

2. SIM_range

   This sim monitors a value which is set by TVS-IO, and prints it to the console

For both, the same process will build each sim.

cd trick_sims/SIM_...
trick-CP

This command will build the executable, which will be named S_main_<platform>.exe. For example on 64bit linux it might be named S_main_Linux_4.8_x86_64.exe

Running

1. Start cFS

   TODO: cFS steps

2. Start each sim:

   cd trick_sims/SIM_temp
   ./S_main_Linux_4.8_x86_64.exe

Footnotes

1. For the cFS portion of this project CFS-101 is recommended. That will teach you the basics of cFS. ↩

2. It is necessary to build and install Trick. Please visit Trick Github and follow the installation guide. ↩