avan989 / sc

The Core Flight System (cFS) Stored Commands (SC) application.

core Flight System (cFS) Stored Command Application (SC)

Introduction

The Stored Command application (SC) is a core Flight System (cFS) application that is a plug in to the Core Flight Executive (cFE) component of the cFS.

The SC application allows a system to be autonomously commanded using sequences of commands that are loaded to SC. Each command has a time tag associated with it, permitting the command to be released for distribution at predetermined times. SC supports both Absolute Time tagged command Sequences (ATSs) and multiple Relative Time tagged command Sequences (RTSs). The purpose of ATS commands is to be able to specify commands to be executed at a specific time. The purpose of Relative Time Sequence commands is to be able to specify commands to be executed at a relative time.

The SC application is written in C and depends on the cFS Operating System Abstraction Layer (OSAL) and cFE components. There is additional SC application specific configuration information contained in the application user's guide.

User's guide information can be generated using Doxygen (from top mission directory):

  make prep
  make -C build/docs/sc-usersguide sc-usersguide

Software Required

cFS Framework (cFE, OSAL, PSP)

An integrated bundle including the cFE, OSAL, and PSP can be obtained at https://github.com/nasa/cfs

About cFS

The cFS is a platform and project independent reusable software framework and set of reusable applications developed by NASA Goddard Space Flight Center. This framework is used as the basis for the flight software for satellite data systems and instruments, but can be used on other embedded systems. More information on the cFS can be found at http://cfs.gsfc.nasa.gov