ZZZZZZ
                    ZZZZZZZZZZZZ
                  ZZZZZZZZZZZZZZZZ
                 ZZZZZZZ     ZZZZZZ
                ZZZZZZ        ZZZZZ
                ZZZZZ          ZZZZ
                ZZZZ           ZZZZZ
                ZZZZ           ZZZZ
                ZZZZ          ZZZZZ
                ZZZZ        ZZZZZZ
                ZZZZ     ZZZZZZZZ       777        7777       7777777777
          ZZ    ZZZZ   ZZZZZZZZ         777      77777777    77777777777
      ZZZZZZZ   ZZZZ  ZZZZZZZ           777     7777  7777       777
    ZZZZZZZZZ   ZZZZ    Z               777     777    777       777
   ZZZZZZ       ZZZZ                    777     777    777       777
  ZZZZZ         ZZZZ                    777     777    777       777
 ZZZZZ          ZZZZZ    ZZZZ           777     777    777       777
 ZZZZ           ZZZZZ    ZZZZZ          777     777    777       777
 ZZZZ           ZZZZZ     ZZZZZ         777     777    777       777
 ZZZZ           ZZZZ       ZZZZZ        777     777    777       777
 ZZZZZ         ZZZZZ        ZZZZZ       777     777    777       777
  ZZZZZZ     ZZZZZZ          ZZZZZ      777     7777777777       777
   ZZZZZZZZZZZZZZZ            ZZZZ      777      77777777        777
     ZZZZZZZZZZZ               Z
        ZZZZZ

The friendly Operating System for IoT!

RIOT is a real-time multi-threading operating system that supports a range of devices that are typically found in the Internet of Things (IoT): 8-bit, 16-bit and 32-bit microcontrollers.

RIOT is based on the following design principles: energy-efficiency, real-time capabilities, small memory footprint, modularity, and uniform API access, independent of the underlying hardware (this API offers partial POSIX compliance).

RIOT is developed by an international open source community which is independent of specific vendors (e.g. similarly to the Linux community). RIOT is licensed with LGPLv2.1, a copyleft license which fosters indirect business models around the free open-source software platform provided by RIOT, e.g. it is possible to link closed-source code with the LGPL code.

FEATURES

RIOT is based on a microkernel architecture, and provides features including, but not limited to:

• a preemptive, tickless scheduler with priorities
• flexible memory management
• high resolution, long-term timers
• support 100+ boards based on AVR, MSP430, ESP8266, ESP32, MIPS, RISC-V, ARM7 and ARM Cortex-M
• the native port allows to run RIOT as-is on Linux, BSD, and MacOS. Multiple instances of RIOT running on a single machine can also be interconnected via a simple virtual Ethernet bridge
• IPv6
• 6LoWPAN (RFC4944, RFC6282, and RFC6775)
• UDP
• RPL (storing mode, P2P mode)
• CoAP
• CCN-Lite
• Sigfox
• LoRaWAN

GETTING STARTED

• You want to start the RIOT? Just follow our quickstart guide or try this tutorial. For specific toolchain installation, follow instructions in the getting started page.
• The RIOT API itself can be built from the code using doxygen. The latest version of the documentation is uploaded daily to riot-os.org/api.

USING THE NATIVE PORT WITH NETWORKING

If you compile RIOT for the native cpu and include the netdev_tap module, you can specify a network interface like this: PORT=tap0 make term

SETTING UP A TAP NETWORK

There is a shell script in RIOT/dist/tools/tapsetup called tapsetup which you can use to create a network of tap interfaces.

USAGE

To create a bridge and two (or count at your option) tap interfaces:

./dist/tools/tapsetup/tapsetup [-c [<count>]]

CONTRIBUTE

To contribute something to RIOT, please refer to our contributing document.

MAILING LISTS

• RIOT OS kernel developers list
• devel@riot-os.org (https://lists.riot-os.org/mailman/listinfo/devel)
• RIOT OS users list
• users@riot-os.org (https://lists.riot-os.org/mailman/listinfo/users)
• RIOT commits
• commits@riot-os.org (https://lists.riot-os.org/mailman/listinfo/commits)
• Github notifications
• notifications@riot-os.org (https://lists.riot-os.org/mailman/listinfo/notifications)

LICENSE

• Most of the code developed by the RIOT community is licensed under the GNU Lesser General Public License (LGPL) version 2.1 as published by the Free Software Foundation.
• Some external sources, especially files developed by SICS are published under a separate license.

All code files contain licensing information.

For more information, see the RIOT website:

https://www.riot-os.org