laysim-GR740 and NASA cFS

Our KARI's FSW team has ported NASA cFS to GR740 and RTEMS 5.1 including OSAL and PSP. 

We tested it on GR740 Development Board (250MHz) from Gaisler with cFS Ground Station and COSMOS Ground Station.

Also lasyim-GR740 v1.6.2 can run cFS without any modifications, and it can communicate with Ground Station using UDP port of GRETH. laysim-gr740-dbt can run cFS much faster than real GR740 board.

More information can be found in this presentation material, laysim-GR740 and cFS.


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I'm Jong-Wook Choi from KARI (Korea Aerospace Research Institute). I'm an on-board flight software engineer in KARI. I've developed the flight software for KOMPSAT-2/3/5/3A, CAS-500 and GEO-KOMPSAT-2A/2B. Currently I involve in developing of the flight software for KOMPSAT-6/7/7A, and KPLO (Korean Pathfinder Lunar Orbiter). For many years, flight software (FSW) has been developed and verified using the software test bed (STB) environment based on the real hardware in KARI. During the development of FSW on the STB, we have experienced lots of annoying problems such as delayed deliver of target hardware, limited concurrent access to the STB from software engineers, and the time and cost to create multiple STBs for different satellites. Thus, software-based satellite simulators have been developed from the beginning of a satellite project to avoid these issues. The software-based simulator enables the FSW to be developed concurrently with the satellite hardware from the in...
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