Welcome to the RTEMS home page!

RTEMS is the Real-Time Operating System for Multiprocessor Systems. It is a full featured RTOS that supports a variety of open API and interface standards. Major decisions about RTEMS are made by the Steering Committee, guided by the Mission Statement.

We encourage everyone to contribute changes and help testing RTEMS, and we provide access to our development sources with anonymous CVS and snapshots.

We strive to provide regular, high quality releases, which we want to work well on a wide range of embedded targets using cross development from a variety of hosts including GNU/Linux, FreeBSD, Cygwin, and Solaris.

Current Training Dates

• RTEMS Kick Start: August 25, 2008 in Huntsville, Alabama USA
• Open Class: August 26-29, 2008 in Huntsville, Alabama USA
• Open Class: October 6-9, 2008 in Munich, Germany

For more detailed information, see the RTEMS Training wiki page.

Release and Active Development

• Mainline: will become 4.9 (obtain from CVS)
• 4.8 Release Branch: RTEMS 4.8 (check out from CVS using the tag rtems-4-8-branch) (latest is 4.8.1)
• 4.7 Release Branch: RTEMS 4.7 (check out from CVS using the tag rtems-4-7-branch) (latest is 4.7.2)
• 4.6 Release Branch (CLOSED): RTEMS 4.6 (check out from CVS using the tag rtems-4-6-branch) (last WAS 4.6.6)

Featured Projects:

• THEMIS Mission: NASA launched a fleet of five satellites called THEMIS , the Time History of Events and Macroscale Interactions during Substorms, to investigate the aurora borealis. Obviously since we mention the mission here, these satellites run RTEMS. It has been featured on the program Nova scienceNOW which includes a video. It is also featured on one of the RTEMS Project Flyers
• Dawn Mission: The Dawn Mission launched approximately 7:35 AM EDT on 27 September 2007. This mission includes a Framing Camera developed at the Technical University of Braunschweig in Germany. It is running RTEMS on a SPARC/LEON2. Other links on this project include: The Camera for Dawn - Design and Expected Results and Reconfigurable System-on-Chip Data Processing Units for Space Imaging Instruments. The mission is scheduled to arrive at Ceres in the asteroid belt in 2015. Please visit the Dawn RTEMS Wiki page and help make it more complete and keep it up to date.
• Electra: RTEMS circles Mars!!! It was reported on the RTEMS Users mailing list in this message that RTEMS is being used on the Electra UHF antenna. More information is at http://mars-scout.larc.nasa.gov/PDF_FILES/EUT_SCOUT_AO_Rev_DUpdated.pdf and http://www.spectrum.ieee.org/feb06/2810

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