The official git repository for OSD-Contiki, the open source OS for the Internet of Things
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2008-07-09 09:33:58 +00:00
apps Flush energy estimates before reading them 2008-07-09 09:32:54 +00:00
backyard Moved old Makefile from platform/esb to backyard/platform/esb 2008-07-08 11:21:51 +00:00
core Rewrote the neighbor discovery code so that messages are suppressed if a lower rtmetric is received. This reduces the overall number of broadcast packets. 2008-07-09 09:33:58 +00:00
cpu Added a clock_seconds() function prototype to core/sys/clock.h, that returns seconds in 32 bit format. On platforms like the MSP430, which has a 16 bit native datatype, this cannot be implemented with an interrupt tick that increments a 32 bit value because access is not atomic. Instead, the MSP430 code increments 16 bit seconds value and converts this into a 32 bit value through an offset calculation. If the new value is smaller than the last check, the offset is incremented by 65536. This change also means that CLOCK_CONF_SECOND must be a power of two because a modulo operation is used inside the periodic tick interrupt handler. 2008-07-07 23:38:09 +00:00
doc Contributions from Michael Baar. 2008-04-28 11:36:59 +00:00
examples fixed compiler warning 2008-07-08 12:54:41 +00:00
platform updated tr1001_send and tr1001_read to match radio driver api 2008-07-08 13:22:31 +00:00
tools A binary conversion tool has been modified to support variations. 2008-07-02 07:17:14 +00:00
Makefile.include Include CRC16 library in sources 2008-07-07 23:21:50 +00:00
README README 2007-03-29 23:42:18 +00:00
README-BUILDING Add some info on the DEFINES= / savedefines mechanism. 2008-06-12 22:13:59 +00:00
README-EXAMPLES Introduced web browser as new example using ctk fullscreen mode. 2007-12-15 22:36:50 +00:00

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.

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.

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.

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.

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/