#FreeRTOS
LightNews LightNews
yrabl.bsky.social
"Have you heard about the new feature of freeRTOS? It is my new special interest!"
November 10, 2026 at 12:29 AM
hackster.io.web.brid.gy
RT-Spark STM32 FreeRTOS Personal MP3 Player
A multithreaded MP3 player on the RT-Spark (STM32F407) board using FreeRTOS, I2S DMA, and the ES8388 codec for real-time audio synthesis.
www.hackster.io
November 8, 2026 at 11:11 AM
freya.highenergymagic.net.ap.brid.gy
this ESP32P4 palmtop has more CPU power than the entire Sun workstation sitting next to it. and you Arduino normies are using these things to twiddle GPIOs or run freertos. WHY?!
November 5, 2026 at 7:50 AM
eyalestrin.bsky.social
CVE-2026-119086 - Missing type validation in xQueueSelectFromSet in FreeRTOS-Kernel #patchmanagement
CVE-2026-119086 - Missing type validation in xQueueSelectFromSet in FreeRTOS-Kernel
Auto post photos, videos, and links across social channels. Maximize Reach Reach a wider audience across multiple social platforms. Auto Post to Social Media Auto share photos, videos, and links across your social networks. Auto post to Facebook, Twitter, LinkedIn, Pinterest, TikTok, and more. Auto Share from Anywhere Automatically cross-post media from RSS feeds, Instagram Profiles, Facebook Pages, TikTok, and more.
dlvr.it
November 5, 2026 at 3:28 PM
drjonea.bsky.social
1/ Two Pico SDK bugs that bite when you cycle Wi-Fi on a Pico 2 W for low power, and how I worked round them. Both are still there in SDK 2.3.1. 🐛🧵

#RaspberryPiPico #PicoSDK #FreeRTOS
Two slides side by side. Left, FreeRTOS config with static allocation 0 and dynamic allocation 1. Right, don't call cyw43_arch_deinit, use cyw43_driver_deinit instead
November 4, 2026 at 7:18 AM
drjonea.bsky.social
3/ Bug 2: lwIP's FreeRTOS deinit never restores the lwIP context, so the next init waits forever and the Pico never reconnects.

Fix: skip cyw43_arch_deinit() and call cyw43_driver_deinit(cyw43_arch_async_context()).
November 4, 2026 at 7:18 AM
freya.highenergymagic.net.ap.brid.gy
@FreakyFwoof it's a dual-core 400MHz ESP32P4 RISC-V CPU. it came with some janky MicroPython-based firmware based on ESP IDF, which is basically a hacked up FreeRTOS with a big bag of unstructured code. no multitasking, no user / kernel mode split, no multiprocessing, no security, no windowing […]
Original post on social.highenergymagic.net
social.highenergymagic.net
November 5, 2026 at 7:02 AM
drjonea.bsky.social
2/ Bug 1: with FreeRTOS static allocation on, cyw43_arch_deinit() zeroes the CYW43's memory, sometimes before the kernel has cleaned up the task. An intermittent hard fault in uxListRemove().

Fix: dynamic allocation only.
November 4, 2026 at 7:18 AM
eprint.ing.bot
A Security-Aware PQC Benchmarking Framework on Dual-Core Xtensa Silicon (Gertrude Nabasirye, Hristina Mihajloska Trpcheska, E. Fatih Yetkin) ia.cr/2026/2384
Abstract. Deploying memory-heavy post-quantum cryptography (PQC) at the smart grid edge threatens real-time substation determinism, directly conflicting with the strict  ≤ 3ms GOOSE tripping window of the IEC 61850 standard. To resolve this architectural tension, we propose a security-aware, hardware-in-the-loop benchmarking framework on the dual-core Xtensa LX7 (ESP32-S3) SoC running FreeRTOS. To prevent inter-core resource contention, the framework employs an asymmetric task-isolation design, pinning cryptographic operations to Core 1 while leaving Core 0 responsive to line-rate grid interrupts. Additionally, we define a programmatic heap-auditing methodology to model how heap_4.c maps key-state allocations across physical DRAM fragments while preserving the primary 128 KB contiguous system heap. Finally, we formulate an analytical latency model of the external Octal-SPI PSRAM interface, mathematically characterizing the CPU stall overhead (C_(stall)) induced when side-channel masking forces secret polynomial shares to spill over the external bus during non-sequential Cooley-Tukey NTT strides. This framework provides a rigorous methodology to characterize micro-architectural trade-offs, enabling utility engineers to plan post-quantum migration pathways without violating real-time grid constraints. Image showing part 2 of abstract.
November 9, 2026 at 1:35 AM
hackster.io.web.brid.gy
Multithreaded RT-Spark MP3 Player Using FreeRTOS
A tone-synthesizing STM32F407 audio player with FreeRTOS multitasking, I2S DMA streaming, pot volume, and LCD status feedback.
www.hackster.io
October 31, 2026 at 2:36 PM
euvd-bot.bsky.social
🚨 EUVD-2026-114246
📊 8.2/10
🏢 FreeRTOS

📝 Missing queue-set type validation in the queue-set selection system call in FreeRTOS-Kernel before V11.3.3 on MPU-enabled ports with queue sets enabled...

🔗 https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-114246

#cybersecurity #infosec #cve #euvd
October 30, 2026 at 7:01 PM
cve.skyfleet.blue
CVE-2026-119086 - Missing type validation in xQueueSelectFromSet in FreeRTOS-Kernel
CVE ID : CVE-2026-119086

Published : Oct. 30, 2026, 5:33 p.m. | 26 minutes ago

Description : Missing queue-set type validation in the queue-set selection system call in FreeRTOS-Kernel be...
CVE-2026-119086 - Missing type validation in xQueueSelectFromSet in FreeRTOS-Kernel
Missing queue-set type validation in the queue-set selection system call in FreeRTOS-Kernel before V11.3.3 on MPU-enabled ports with queue sets enabled allows a local unprivileged task to write actor-controlled data beyond a pointer-sized object on the privileged kernel stack, affecting privileged memory across the MPU isolation boundary. To remediate this …
cvefeed.io
October 30, 2026 at 6:54 PM
lobsters-feed.bsky.social
Sylphide Operating System: a FreeRTOS-based OS for MCU-based computers https://lobste.rs/s/vhnaoy ##retrocomputing
Sylphide Operating System: a FreeRTOS-based OS for MCU-based computers
projects.freehackers.org
October 29, 2026 at 11:45 PM
suikan.bsky.social
async関数をタスクとみなすRustの組み込みフレームワークEmbassyは、このメモリ割り当て方法のおかげてメモリ必要量が減るとしている。

FreeRTOSのようなRTOSはタスクごとにスタックに余裕を持たせなければならない。

Embassyは協調動作するタスク群に共通するスタックを1本だけしか持たないので、余裕として持たせるメモリ量を減らすことができる。
October 29, 2026 at 10:45 AM
stm32world.mastodon.social.ap.brid.gy
I2C EEPROM (M24M01) Neopixel (WS2812) and FreeRTOS | RP2350 #18

Running the M24M01 demo under FreeRTOS with a 8x8 Neopixel matrix for progress indication.

#rp2350 #gettingstarted #tutorial #picosdk #i2c #eeprom #m24m01 #neopixel #ws2812 #freertos #streamline […]
Original post on mastodon.social
mastodon.social
October 24, 2026 at 9:48 AM
hackster.io.web.brid.gy
Running FreeRTOS SMP on RP2040/RP2350 with profiling
Running FreeRTOS SMP on RP2040/RP2350 built by Pico C SDK App with profiling
www.hackster.io
October 26, 2026 at 2:38 AM
hackster.io.web.brid.gy
MP3 Player on the RT-Spark
8-song MP3 player on the RT-Spark: binary song select, 5 s confirm, RGB status LED, volume knob, 3 FreeRTOS threads.
www.hackster.io
October 25, 2026 at 2:38 AM
initkfs.eurosky.social
RISC-V технологии этой планеты не впечатляют. Выбор пал на ESP32-C3 (LuatOS плата). Дешёв, много памяти, удобно в юниттесты прямо на железе. Всё завязано на ESP-IDF и FreeRTOS, радиомодуль закрыт, но это меньшие проблемы в сравнении с аналогами. Пробую внедрить Dlang и взять модуль под свой контроль
October 24, 2026 at 7:09 PM
pederbe.dev
Ripscope was measured against cscope on 100 real C projects, from the Linux kernel to SQLite and, yes, Doom. It reads every file in all of them.

It also finds what cscope misses, like calls in Emacs's DEFUN bodies and writes like total_forks++. Faster, too.

ripscope.com
#C #cscope
Measured against cscope. 100 real C projects, every file read. Labels name some of them: Linux kernel, FreeBSD, Zephyr, U-Boot, SQLite, curl, Redis, Emacs, FreeRTOS, Git, OpenSSL and, yes, Doom.
October 22, 2026 at 1:03 PM
kurtvandusen.bsky.social
In our dual-MCU topology, MCU #1 runs the deterministic 20 ms safety reflex loop on FreeRTOS. It streams real-time vehicle telemetry to MCU #2 over an internal UART link (921,600 baud) using a length-prefixed, HMAC-SHA256 signed envelope. (2/5)
October 20, 2026 at 3:43 PM
euvd-bot.bsky.social
🚨 EUVD-2026-103021
📊 9.2/10
🏢 FreeRTOS

📝 Improper verification of the source of a communication channel in the IPv6 Router Advertisement handler in Amazon FreeRTOS-Plus-TCP before V4.4.2 might...

🔗 https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-103021

#cybersecurity #infosec #cve #euvd
October 19, 2026 at 2:01 PM
euvd-bot.bsky.social
🚨 EUVD-2026-103022
📊 8.2/10
🏢 FreeRTOS

📝 Improper verification of the source of a communication channel in the DNS resolver in Amazon FreeRTOS-Plus-TCP before V4.4.2 might allow remote third-p...

🔗 https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-103022

#cybersecurity #infosec #cve #euvd
October 19, 2026 at 2:01 PM
hackster.io.web.brid.gy
Multithreaded RT-Spark MP3 Player using FreeRTOS
Transform an RT-Spark board into an MP3 player using FreeRTOS to concurrently manage audio playback, LCD updates, and hardware inputs.
www.hackster.io
October 19, 2026 at 11:09 AM
kishima.bsky.social
オンライン麻雀のサンプルが最低限形になったので、知人を交えてリモートで対戦して、問題なく遊べることを確認した。
打ち手にClaudeとJevを呼べるようにしてもらい、連携方法をClaude先生に学させてもらっている。
ブラウザ上でFreeRTOSをwasmで動かしてその上でPicoRubyやらSpinelを動かして、さらにその上で、Rubyのコードで動く麻雀クライアントアプリがWebSocketで自サーバ上システムと連携してるが、麻雀程度はサクサク動くので、他にもやれることは色々ありそうという感触を得た。
October 18, 2026 at 11:02 AM
stackflag.bsky.social
CVE-2026-109587 - freertos-kernel
A bug in FreeRTOS Kernel version 11.3.0 and 11.3.1 can let a low‑privilege task read or change kernel memory it should not access. This could let malicious code…

Too many irrelevant or confusing CVEs? Use stackflag.com

#freertoskernel #freertos #CVE #infosec
CVE-2026-109587: FreeRTOS Kernel allows unprivileged task to tamper with protected memory
A bug in FreeRTOS Kernel version 11.3.0 and 11.3.1 can let a low‑privilege task read or change kernel memory it should not access.
stackflag.com
October 16, 2026 at 7:50 PM