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OUTPOST - Open modUlar sofTware PlatfOrm for SpacecrafT

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The OUTPOST library (Open modUlar sofTware PlatfOrm for SpacecrafT) is developed at the German Aerospace Center (DLR) and provides an execution platform targeted at embedded systems running mission critical software. The library set up to be modular, allowing the user to choose which modules to use and which modules to leave out.

OUTPOST is split into two repositories: outpost-core contains the open-source base environment and outpost-satellite contains the closed-source satellite specific modules.

IMPORTANT NOTICE

This repositry is only a snapshot of the current state of development in progress at DLR. If you want to participate or are interested in the satellite specific modules, please contact jan-gerd.mess[at]dlr.de

Modules

This repository contains the following software modules:

  • base

    Most basic data structures and arithmetic helper classes used throughout the library.

  • utils

    A collection of useful bits and pieces. The reuseable unit test harness is located here.

  • comm

    Implementation of the Remote Memory Access Protocol (RMAP) via SpaceWire.

  • compression

    Algorithms for (de)compression and de-/encoding of time-series data using wavelet compression and set-partitioning-in-hierarchical-trees.

  • time

    Type safe time management functions. Provides classes to convert between time representations, e.g. Unix Time to GPS or TAI.

  • parameter

    Provides system-wide access to variables that need to be read/written by different parts of the (loosely coupled) system.

  • rtos

    RTOS wrapper layer. Allows to build OUTPOST on different operating system. Supports RTEMS, FreeRTOS and all POSIX compatible OS.

  • hal

    Hardware abstraction layer for communication interfaces.

  • sip

    Simple Interface Protocol. A minimal packet-based communication protocol for hardware links, includes specifications for UART, SpaceWire and UDP

  • smpc

    Simple Message Passing Channel. Provides a very basic, but fast publish/subscribe based communication middleware for objects living in the same address space.

  • swb

    Software Bus. An asynchronous mean of communication between software modules based on the publish/subscribe paradigm.

  • support

    A heartbeat-mechanism that serves as a software watchdog on thread-level.

Installation

The installation of the tool required for the library development is described in the INSTALL file.

License

Unless otherwise noted the source code is licensed under the terms of the Mozilla Public License, v. 2.0 (see mpl-v2.0.txt).

Files with a different license:

  • tools/l3test/src/lua/exception.h (BSD 3-clause)
  • modules/utils/ext/rapidcheck/* (BSD 2-clause)
  • modules/utils/ext/googletest-1.8.0-fused/* (BSD 3-clause)

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