# Zephyr RTOS Zephyr RTOS is a secure, connected real-time operating system ecosystem for embedded devices, supporting over 1,000 boards. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## Run Zephyr on ESP32 with QEMU: no board required DevFeed: [Run Zephyr on ESP32 with QEMU: no board required]() Original publisher: [Read original article]() Author: John Lee Published: 2026-09-15T00:00:00Z Content type: tutorial Language: en Sources: [Blog on Developer Portal]() Topics: [Zephyr RTOS](), [ESP32](), [qemu](), [Espressif](), [Emulator](), [Embedded Software Dev](), [SDK]() Tags: [blog](), [boot](), [bootloader](), [build](), [debugger](), [emulator](), [esp32](), [esp32-c3](), [esp32-c6](), [esp32-s3](), [espressif](), [firmware](), [flash](), [gdb](), [install](), [qemu](), [sdk](), [toolchain](), [tutorial](), [zephyr]() ### AI overview This tutorial explains how to install and use the Espressif QEMU fork to build and run Zephyr firmware for emulated ESP32, ESP32-S3, ESP32-C3, and ESP32-C6 targets without physical boards. It covers Simple Boot and MCUboot/sysbuild workflows, debugger attachment through GDB, and the relevant Zephyr SDK toolchain setup. ### Source excerpt Install the Espressif QEMU fork and run Zephyr on emulated ESP32, ESP32-S3, ESP32-C3, and ESP32-C6 targets without a physical board. ## What to expect at the Zephyr Project Meetup (September 15, 2026) - Amsterdam, Netherlands DevFeed: [What to expect at the Zephyr Project Meetup (September 15, 2026) - Amsterdam, Netherlands]() Original publisher: [Read original article]() Author: Susan Remmert Published: 2026-09-09T05:00:04Z Content type: article Language: en Sources: [Zephyr Project]() Topics: [Zephyr RTOS](), [Embedded Systems](), [Open Source](), [Fuzzing/Fuzz testing](), [simulator](), [developer tooling]() Tags: [2026](), [blog](), [bugs](), [community](), [contributors](), [embedded](), [embedded-systems](), [event](), [events](), [firmware](), [fuzzing](), [harness](), [meetup](), [open-source](), [simulator](), [talk](), [technologies](), [tooling](), [tools](), [zephyr]() ### AI overview The Zephyr Project Meetup in Amsterdam on September 15, 2026, will bring together embedded developers, contributors, students, and engineers to exchange practical knowledge about Zephyr RTOS. The agenda includes talks on JetBrains' work with Zephyr, fuzzing Zephyr applications with AFL and Renode, and making hardware development easier with Schematik. ### Source excerpt What are developers in the Netherlands building with Zephyr? On September 15, the embedded community will meet in Amsterdam to exchange practical knowledge, discuss current work, and learn more about the Zephyr RTOS. The event is open to experienced contributors, first-time users, students, engineers, and anyone curious about open source embedded development. ## What to expect at the Zephyr Project Meetup (September 15, 2026) - Amsterdam, Netherlands DevFeed: [What to expect at the Zephyr Project Meetup (September 15, 2026) - Amsterdam, Netherlands]() Original publisher: [Read original article]() Author: Susan Remmert Published: 2026-09-09T05:00:04Z Content type: news Language: en Sources: [Zephyr Project]() Topics: [Zephyr RTOS](), [Embedded Systems](), [Fuzzing/Fuzz testing](), [Open Source]() Tags: [2026](), [blog](), [c](), [c-plus-plus](), [crashes](), [developer-tooling](), [embedded](), [embedded-systems](), [event](), [events](), [firmware](), [fuzzing](), [harness](), [jetbrains](), [meetup](), [memory-corruption](), [open-source](), [simulator](), [zephyr]() ### AI overview The Zephyr Project Meetup in Amsterdam on September 15, 2026, will bring together embedded developers, contributors, students, and engineers to share practical knowledge about Zephyr RTOS. The agenda includes talks on JetBrains' work with Zephyr, fuzzing Zephyr with AFL and Renode, and making hardware development easier with Schematik. ### Source excerpt What are developers in the Netherlands building with Zephyr? On September 15, the embedded community will meet in Amsterdam to exchange practical knowledge, discuss current work, and learn more about the Zephyr RTOS. The event is open to experienced contributors, first-time users, students, engineers, and anyone curious about open source embedded development. ## ArduinoCore-Zephyr 1.0.0 adds support for Arduino VENTUNO Q, updates to Zephyr 4.4.1, and more DevFeed: [ArduinoCore-Zephyr 1.0.0 adds support for Arduino VENTUNO Q, updates to Zephyr 4.4.1, and more]() Original publisher: [Read original article]() Author: Jean-Luc Aufranc (CNXSoft) Published: 2026-09-04T10:27:38Z Content type: release Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [Arduino](), [Zephyr RTOS](), [Embedded Systems](), [Embedded Software Dev](), [Hardware](), [Microcontroller](), [webcam](), [ci]() Tags: [arduino](), [bug-fixes](), [camera](), [ci](), [development-board](), [embedded-systems](), [hardware](), [mcu](), [real-time](), [release](), [software-management](), [ventuno-q](), [vision](), [zephyr](), [zephyr-os]() ### AI overview Arduino has released ArduinoCore-Zephyr 1.0.0 with support for the VENTUNO Q SBC and Nicla Vision camera, an update to Zephyr 4.4.1, and bug-fix and CI improvements. The article also lists supported Arduino platforms and installation steps. ### Source excerpt Arduino has just announced the release of ArduinoCore-Zephyr version 1.0.0, with new hardware support, including the VENTUNO Q SBC, an updated Zephyr 4.4.1 base, support for the Nicla Vision camera, and various fixes and improvements. Arduino first announced its plans to switch from Arm Mbed to Zephyr RTOS in July 2024, before releasing the first beta of Arduino Core for Zephyr in December of the same year. ArduinoCore-Zephyr 1.0.0 is not the first stable version, since that was version 0.90.0 released on July 29, 2026. The new release builds on that, so let's see what's new. ArduinoCore-Zephyr 1.0.0 highlights Support for Arduino VENTUNO Q SBC, specifically the STM32H5F5 real-time MCU on the board Update to Zephyr 4.4.1 with the latest upstream improvements, security fixes, and driver support Added Nicla Vision camera support to capture and process image data directly through the Zephyr core Various bug fixes and CI improvements Currently [...] The post ArduinoCore-Zephyr 1.0.0 adds support for Arduino VENTUNO Q, updates to Zephyr 4.4.1, and more appeared first on CNX Software - Embedded Systems News. ## Zephyr in Practice: From Bare-Metal Development to Release Management DevFeed: [Zephyr in Practice: From Bare-Metal Development to Release Management]() Original publisher: [Read original article]() Author: Zephyr Project Published: 2026-08-25T05:00:55Z Content type: article Language: en Sources: [Zephyr Project]() Topics: [Zephyr RTOS](), [Embedded Systems](), [Embedded Software Dev](), [releases](), [Tooling](), [Open Source]() Tags: [2026](), [blog](), [development](), [embedded](), [embedded-systems](), [events](), [industry-conference](), [open-source](), [release-management](), [releases](), [zephyr]() ### AI overview A post-event report from Open Source Summit India 2026 examines two Zephyr sessions: adopting Zephyr from bare-metal development and maintaining downstream Zephyr releases while keeping pace with upstream development. ### Source excerpt The Zephyr community came together at Open Source Summit India 2026 in Mumbai to share knowledge and explore developments, tooling, and real-world applications across embedded systems. In this first post-event blog, we highlight two sessions from the Zephyr track. One explored why Zephyr can initially feel overwhelming to bare-metal developers, while the other examined how downstream Zephyr releases can keep pace with upstream development. ## MCUboot - Getting Started Guide for ESP32 DevFeed: [MCUboot - Getting Started Guide for ESP32]() Original publisher: [Read original article]() Author: John Lee Published: 2026-01-09T00:00:00Z Content type: tutorial Language: en Sources: [Blog on Developer Portal]() Topics: [ESP32](), [Embedded Software Dev](), [Espressif](), [NuttX](), [Zephyr RTOS](), [configuration]() Tags: [blog](), [bootloader](), [building](), [configuration](), [ecdsa](), [ed25519](), [embedded](), [esp32](), [espressif](), [firmware](), [flashing](), [getting-started](), [mcuboot](), [nuttx](), [rsa](), [secure-boot](), [security](), [zephyr]() ### AI overview A practical guide to using MCUboot on ESP32-based projects. It explains MCUboot's secure bootloader role, environment and application configuration, bootloader building, and flashing, with examples for NuttX and Zephyr RTOS applications. ### Source excerpt This guide provides a practical getting-started walkthrough for using MCUboot on ESP32. It covers step-by-step environment setup, bootloader building, application configuration, and flashing. It also gives an overview of MCUboot's execution flow. ## ESPHome 2025.8.0: nRF52 support and ESP-NOW mesh communication DevFeed: [ESPHome 2025.8.0: nRF52 support and ESP-NOW mesh communication]() Original publisher: [Read original article]() Author: Jesse Hills Published: 2025-08-20T00:00:00Z Content type: release Language: en Sources: [ESPHome - Smart Home Made Simple - Blog]() Topics: [esphome](), [ESP-NOW](), [Microcontrollers](), [Zephyr RTOS](), [ESP32](), [ESP32-P4](), [Bluetooth]() Tags: [2025](), [bluetooth](), [esp-now](), [esp32](), [esp32-p4](), [esphome](), [introduction](), [latency](), [low-latency](), [memory-optimization](), [microcontrollers](), [mipi](), [optimization](), [release](), [releases](), [zephyr]() ### AI overview ESPHome 2025.8.0 adds basic Nordic nRF52 support built on Zephyr, ESP-NOW device-to-device communication for ESP32 platforms, and MIPI DSI display support for ESP32-P4. It also introduces memory optimizations and requires Python 3.11 or newer. ### Source excerpt ESPHome 2025.8.0 introduces the Nordic nRF52 platform built on Zephyr, ESP-NOW device-to-device communication, and MIPI DSI display support, and now requires Python 3.11 or newer. ## How to migrate from IDF Bootloader to MCUboot using ESP Self-Reflasher DevFeed: [How to migrate from IDF Bootloader to MCUboot using ESP Self-Reflasher]() Original publisher: [Read original article]() Author: John Lee Published: 2025-01-16T00:00:00Z Content type: tutorial Language: en Sources: [Blog on Developer Portal]() Topics: [migration](), [Embedded Software Dev](), [ESP-IDF](), [NuttX](), [Zephyr RTOS](), [Espressif]() Tags: [blog](), [bootloader](), [component](), [embedded-systems](), [esp-idf](), [esp-self-reflasher](), [firmware](), [firmware-update](), [flashing](), [mcuboot](), [migration](), [nuttx]() ### AI overview This tutorial discusses migrating embedded firmware from the ESP-IDF bootloader to MCUboot using ESP Self-Reflasher. It explains why bootloader compatibility matters during RTOS or platform migration and notes that direct serial flashing may be impractical for inaccessible devices. ### Source excerpt Migration is a word that carries a weighty importance in many contexts. It means relocation, resettling or, in case of the tech area, it could mean upgrade or replacement. A variety of reasons may motivate the big decision of migrating an entire piece of hardware or software from a production running system. ## Introduction to Zephyr OS Tracing and Profiling DevFeed: [Introduction to Zephyr OS Tracing and Profiling]() Original publisher: [Read original article]() Author: John Lee Published: 2024-11-15T00:00:00Z Content type: tutorial Language: en Sources: [Blog on Developer Portal]() Topics: [Zephyr RTOS](), [Embedded Software Dev](), [tracing](), [Embedded Systems](), [debugging](), [ESP32]() Tags: [architecture](), [blog](), [cpu](), [debugging](), [embedded](), [embedded-systems](), [esp32](), [esp32-c6](), [introduction](), [jtag](), [logging](), [performance](), [profiling](), [python](), [techniques](), [threads](), [tracing](), [usb](), [zephyr](), [zephyr-os]() ### AI overview This article introduces tracing and profiling for embedded systems using Zephyr RTOS. It explains how tracing records execution data from functions, threads, and interrupts, while profiling measures metrics such as execution time, CPU usage, and dynamic memory usage. It also demonstrates Zephyr's native tracing workflow on an ESP32-C6 and introduces Percepio's Tracealyzer as a third-party analysis tool. ### Source excerpt This is an introduction to the critical embedded system debugging techniques of tracing and profiling within the Zephyr RTOS. After reading this article, you can use Zephyr's native tracing tools to gain a visual, in-depth understanding of system dynamics, helping to evaluate performance, spot timing issues, and diagnose complex problems like memory leaks or thread interaction glitches. ## ESP32 bootstrapping in Zephyr DevFeed: [ESP32 bootstrapping in Zephyr]() Original publisher: [Read original article]() Author: John Lee Published: 2024-10-30T00:00:00Z Content type: article Language: en Sources: [Blog on Developer Portal]() Topics: [ESP32](), [Espressif](), [boot](), [Zephyr RTOS](), [SOC](), [Hardware](), [Tooling]() Tags: [blog](), [boot](), [bootloader](), [debugging](), [embedded](), [esp-idf](), [esp32](), [esp32-c3](), [esp32-c6](), [esp32-s2](), [esp32-s3](), [espressif](), [esptool](), [format](), [zephyr]() ### AI overview This article explains how Espressif SoCs, including ESP32 devices up to ESP32-C6, boot in Zephyr RTOS. It covers the ROM loader, second-stage loader, image formats, build and memory considerations, and related tooling. ### Source excerpt This article explains the booting process of Espressif devices up to ESP32-C6 (and probably newer devices). ## ESP32 family Memory Map 101 DevFeed: [ESP32 family Memory Map 101]() Original publisher: [Read original article]() Author: John Lee Published: 2024-08-20T00:00:00Z Content type: tutorial Language: en Sources: [Blog on Developer Portal]() Topics: [ESP32](), [Espressif](), [Microcontroller](), [Zephyr RTOS](), [Cache](), [Development]() Tags: [architecture](), [blog](), [cache](), [code](), [esp32](), [espressif](), [mcu](), [memory](), [performance](), [zephyr]() ### AI overview This article explains the ESP32 family's memory architecture and presents a visually structured compilation of information from datasheets and technical reference manuals. It covers memory maps, external flash and SPIRAM access, caches, ROM, SRAM, and related details relevant to low-level system and driver development, including Zephyr RTOS porting. ### Source excerpt This article addresses the complexity of Espressif SoCs by offering a visual, structured compilation of crucial technical data from their datasheets and TRMs. The main takeaway for the reader is a simplified, actionable understanding of the memory maps, caches, peripherals, and eFuse blocks, which is essential for low-level system and driver development. ## Zephyr RTOS on ESP32 -- First Steps DevFeed: [Zephyr RTOS on ESP32 -- First Steps]() Original publisher: [Read original article]() Author: John Lee Published: 2021-02-24T00:00:00Z Content type: tutorial Language: en Sources: [Blog on Developer Portal]() Topics: [ESP32](), [Zephyr RTOS](), [Embedded Software Dev](), [Espressif](), [Development]() Tags: [blog](), [embedded-systems](), [esp32](), [espressif](), [firmware](), [installation](), [mcuboot](), [ota](), [quick-start](), [security](), [tutorials](), [usb](), [windows](), [zephyr]() ### AI overview A quick-start guide for using Zephyr RTOS on ESP32 devices. It covers installation, board selection, the first build, console connections, binary blobs, and testing the Zephyr port of MCUboot for OTA and security requirements. ### Source excerpt First Steps with Zephyr on ESP32, a collection of all needed tutorials.