95196fb7e4
If there is an event to be handled by _esp_eth_isr(), don't overwrite it if a new packet has been received. In my testing, all SYSTEM_EVENT_ETH_CONNECTED events except the first are immediately followed by at least one SYSTEM_EVENT_ETH_RX_DONE event. This causes the SYSTEM_EVENT_ETH_CONNECTED to not get handled, and the IP stack will not be notified of the new link state. Protect the other events by dropping the packet instead. If an earlier unhandled SYSTEM_EVENT_ETH_RX_DONE event exists, overwrite it with the newer packet. I only saw this happen with lwIP and not with GNRC - I am not sure why. But it still is a race waiting to happen. The nice long term solution is probably to have a queue of unhandled events, allowing them all to be processed once there is time.
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.
FORUM
Do you have a question, want to discuss a new feature, or just want to present your latest project using RIOT? Come over to our forum and post to your hearts content.
CONTRIBUTE
To contribute something to RIOT, please refer to our contributing document.
MAILING LISTS
- RIOT OS kernel developers list: devel@riot-os.org
- RIOT OS users list: users@riot-os.org
- RIOT commits: commits@riot-os.org
- Github notifications: notifications@riot-os.org
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: