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adamdunkels
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Contiki is an open source, highly portable, multi-tasking operating | ||
system for memory-constrained networked embedded systems written by | ||
Adam Dunkels at the Networked Embedded Systems group at the Swedish | ||
Institute of Computer Science. | ||
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Contiki is designed for embedded systems with small amounts of | ||
memory. A typical Contiki configuration is 2 kilobytes of RAM and 40 | ||
kilobytes of ROM. Contiki consists of an event-driven kernel on top of | ||
which application programs are dynamically loaded and unloaded at | ||
runtime. Contiki processes use light-weight protothreads that provide | ||
a linear, thread-like programming style on top of the event-driven | ||
kernel. Contiki also supports per-process optional preemptive | ||
multi-threading, interprocess communication using message passing | ||
through events, as well as an optional GUI subsystem with either | ||
direct graphic support for locally connected terminals or networked | ||
virtual display with VNC or over Telnet. | ||
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Contiki contains two communication stacks: uIP and Rime. uIP is a | ||
small RFC-compliant TCP/IP stack that makes it possible for Contiki to | ||
communicate over the Internet. Rime is a lightweight communication | ||
stack designed for low-power radios. Rime provides a wide range of | ||
communication primitives, from best-effort local area broadcast, to | ||
reliable multi-hop bulk data flooding. | ||
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Contiki runs on a variety of platform ranging from embedded | ||
microcontrollers such as the MSP430 and the AVR to old | ||
homecomputers. Code footprint is on the order of kilobytes and memory | ||
usage can be configured to be as low as tens of bytes. | ||
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Contiki is written in the C programming language and is freely | ||
available as open source under a BSD-style license. More information | ||
about Contiki can be found at the Contiki home page: | ||
http://www.sics.se/contiki/ |