High Quality Content by WIKIPEDIA articles! Cubesat Space Protocol (CSP) is a small network-layer delivery protocol designed for Cubesats. The idea was developed by a group of students from Aalborg University in 2008, and further developed for the AAUSAT3 Cubesat mission scheduled for launch in 2011. The protocol is based on a 32-bit header containing both network and transport layer information. Its implementation is designed for, but not limited to, embedded systems such as the 8-bit AVR microprocessor and the 32-bit ARM and AVR from Atmel. The implementation is written in C and is currently ported to run on FreeRTOS and POSIX and pthreads-based operating systems such as Linux. The three-letter acronym CSP was originally an abbreviation for CAN Space Protocol because the first MAC-layer driver was written for CAN-bus. The physical layer has since been extended to include several other technologies, and the name was therefore extended to the more general Cubesat Space Protocol without changing the abbreviation.