This repository contains the code for cFE, NASA's core Flight Executive. It also contains a number of submodules including OSAL, example "lab" applications, and mission ready applications. Together, these repositories constitute the core Flight System (cFS). Please note that this configuration has not been verified as an operational system.

The official releases are tagged and assigned a version number. Applications (in the apps directory) that have the _lab postfix or sample_ prefix are not intended to be used for flight.

This repository is intend to:

• help foster a larger community of cFS users
• allow easier distribution of cFS to the public users
• provide a way for the public users to submit issues

Active development of cFS is not performed with this repository. We are working on ways to improve communication between public users and developers (for now use GitHub's issue tracker here). We are also looking into ways to better keep the public abreast of cFS development.

Official cFS page: http://cfs.gsfc.nasa.gov

Community cFS page: http://coreflightsystem.org

We suggest that users fork the repositories included here and modify as needed for their specific missions.

To setup cFS directly from the latest release:

git clone --branch 6.5.0a https://github.com/nasa/cFE.git
cd cFE
git submodule init
git submodule update

The latest release include sample applications and an example build target that uses the pc-linux platform support package (should run on most Linux distributions).

To compile and run:

. ./setvars
cd build/cpu1
make config
make
cd exe
sudo ./core-linux.bin