Google’s experimental KataOS, built with Rust atop the formally verified seL4 microkernel and paired with the Sparrow reference implementation, aims to provide a provably secure operating system for embedded machine‑learning workloads, highlighting collaborations, architectural choices, and its place among historic microkernels.
This article explains the origins, standards, physical layer designs, differential signaling, bit timing, synchronization methods, and frame structures of the CAN bus, illustrating why it remains the most reliable and widely used fieldbus in automotive and industrial applications.
This article examines how the automotive industry adopts continuous delivery, detailing the unique distributed, embedded, and safety‑critical constraints, the three‑stage deployment pipeline, test selection and load‑balancing strategies, and a case study of Tesla’s firmware rollout patterns.
The article examines how the automotive industry adopts continuous delivery and DevOps techniques—detailing deployment pipelines, distributed embedded ECUs, safety‑critical testing, tooling, and real‑world observations from Tesla’s firmware release cycles—to illustrate the unique challenges and emerging solutions for rapid, reliable software updates in vehicles.
This comprehensive guide explores the fundamentals of embedded real‑time operating systems, covering instruction set architecture, hardware‑software ecosystems, multi‑task scheduling algorithms, inter‑process communication primitives, software timers, and concrete RISC‑V and Cortex‑M porting implementations with Rust and assembly examples.
The article explains UEFI’s seven‑phase boot process, its open‑source EDK2 implementation, and how its modular drivers, event‑driven multitasking, and extensible services differ from traditional embedded bootloaders such as u‑boot or LK, making UEFI better suited for complex devices like smartphones.
FreeRTOS supports both static and dynamic memory allocation, allowing tasks, timers, semaphores and mutexes to use either a pre‑allocated region or the system heap, provides pvPortMalloc/vPortFree APIs, and offers five heap schemes (heap_1‑5) ranging from simple non‑freeing allocation to multi‑region coalescing management for flexible embedded applications.
SPI is a high‑speed, full‑duplex serial bus using four pins (CS, SCK, MOSI, MISO) with configurable clock polarity and phase, whose timing diagram shows data transfer on clock edges, and Linux provides a driver framework built around spi_driver, spi_transfer, and spi_message structures for reliable sensor communication.
This article explains how FreeRTOS treats tasks as the smallest scheduling unit, details the three phases of task scheduling, describes task states and transitions, and reviews the built‑in communication mechanisms such as semaphores, queues, notifications, and event groups.
Xiaomi unveiled its bionic quadruped robot, CyberDog (nicknamed “铁蛋”), featuring a Jetson Xavier NX AI brain, 32 N·m torque servomotors, advanced vision and auditory sensors, and a suite of motion capabilities, while offering a limited edition at just 9,999 yuan and promising open‑source hardware and software for developers.
This article explains the limitations of NTP for clock alignment, introduces the Precision Time Protocol (PTP) and its IEEE 1588 versions, describes the master‑slave hierarchy, hardware timestamping, and why PTP delivers far higher synchronization accuracy for networked devices.
The article explains Device Tree fundamentals—defining DTS, DTSI, DTB and DTBO formats, their origin as a cleaner alternative to kernel‑embedded platform code, how overlays decouple vendor changes via matching project and PCB IDs, the rules for modifying nodes, and debugging techniques using dtc and mkdtimgdump tools.
Over decades, embedded technology has expanded into the Internet of Things, reshaping the tech stack, demanding new developer skill sets, introducing advanced IoT operating systems, and driving a shift from hardware‑centric sales to cloud‑based services and innovative business models.
This article examines how the rise of the Internet of Things has transformed the technology stack, developer responsibilities, operating systems, and business models, highlighting the expanding skill set required and the shift from hardware‑centric revenue to cloud‑based services and platforms.
This article provides a comprehensive guide to UART fundamentals, communication protocols, baud‑rate calculations, RS232/RS485 differences, flow‑control mechanisms, and the Linux TTY serial framework, including driver registration, data flow, key kernel structures, and practical C code examples for embedded development.
This article provides a comprehensive guide to UART technology, covering its hardware protocol, baud‑rate calculations, RS232/RS485 differences, flow‑control methods, the Linux TTY serial framework with key data structures, driver registration lifecycle, RS485 debugging modes, and a complete C example for configuring and using a serial port on Linux.
The article explains that aircraft software relies on standard computer components but requires highly reliable, robust, real‑time operating systems such as VxWorks for Boeing 787 and AH‑64, Integrity‑178B for many fighter jets and Airbus A380, and recent C++ implementations with CompCert for the F‑35, highlighting the unique demands of aerospace computing.
This article provides a comprehensive overview of ARM's processor architecture, its ecosystem and business strategy, recent product releases such as Cortex‑A78, Cortex‑X1 and Mali‑G68, as well as the company's role in AIoT, automotive and cloud computing markets.
CHRE (Context Hub Runtime Environment) is an event‑driven, single‑threaded framework that hosts nanoapps on a sensor hub, organizing its source tree into API, Core, PAL, Platform, Apps, and Util directories, and managing events through a singleton EventLoopManager that initializes, queues, and dispatches system and nanoapp events.
TencentOS Tiny is an open‑source, ultra‑lightweight real‑time OS for IoT devices that abstracts hardware, provides secure identity, modular networking, OTA updates, low‑power management, and dynamic ELF loading, supporting dozens of MCUs and enabling rapid integration with Tencent Cloud or private clouds across diverse verticals.
This article explains how to overcome the limitations of PC‑based simulators for in‑vehicle navigation development by using a Thrift‑based proxy (Sandwich) to forward car‑side signals to a PC, enable bidirectional debugging, and project map rendering back to the vehicle display.
This article explains what sensors are, their crucial role as the perception layer in the Internet of Things, outlines common sensor types such as ultrasonic, infrared, temperature‑humidity, light, motion, pressure and gas sensors, and discusses emerging trends like higher precision, miniaturization, low power consumption, and improved reliability.
Mark J. Koch uncovered SUN’s rare 1996 Java computer prototype—an early JavaOS‑powered machine built on a SPARCstation5 chipset that predated the Apple Mac mini by nine years, featuring a compact, file‑system‑free OS designed for embedded devices, with unique hardware and historical significance.
Since the early 2000s, embedded software engineers combined hardware expertise with low‑level C and assembly coding, but the shift to complex 32‑bit architectures, IoT demands, and high‑level development tools is eroding the need for deep hardware knowledge, prompting a debate over the future role of traditional embedded developers.
This article reviews a curated list of ultra‑lightweight Linux distributions—each under 1.6 GB—that can run on legacy PCs or minimal hardware, detailing download sizes, core features, and recent update dates to help you choose the best fit for constrained environments.
To enable fast, low‑memory OTA updates on resource‑constrained car head units, Amap’s team reengineered bsdiff by adopting a divsufsort‑based variant, adding a sliding‑window buffer, and swapping Bzip2 for lightweight RLE with secondary compression, reducing patch time to 3‑5 seconds and memory usage to about 2 MB.
This article provides a comprehensive overview of ARM's evolution from ARMv1 to ARMv8, explains the distinction between architecture and core, details the features of each version, outlines the naming conventions of ARM processors, and describes the typical applications of various ARM cores such as ARM7, ARM9, ARM11, and Cortex series.
This article explains how Linux kernel abstracts diverse GPIO hardware through a layered software framework, covering hardware variations, pin control, GPIO subsystem design, and practical considerations for embedded engineers handling new boards and drivers.
This autobiographical article chronicles the author's journey from a struggling high‑school student with poor English scores to a senior software architect at Motorola, highlighting 24 practical career insights on self‑learning, perseverance, technical depth, documentation, and leadership across embedded, networking, and middleware development.
This article explains how embedded Linux on Exynos4 determines which peripheral clocks are enabled or disabled, describes the struct clk representation, shows the registration process in Clock‑exynos4.c, and provides the APIs (clk_get, clk_enable, clk_disable, etc.) for querying and managing module clocks such as the LCD controller.
The article presents a comprehensive technical overview of TencentOS tiny, an ultra‑lightweight real‑time operating system for IoT, covering its market background, core features such as low power consumption and modularity, software architecture, component stack, migration steps, development workflow, AT‑module framework, and integration with Tencent Cloud C‑SDK.
This article traces the evolution of operating systems—from early UNIX and BSD to embedded kernels like VxWorks and μClinux, culminating in the rise of Linux—highlighting key concepts, architectural differences, and why mastering Linux fundamentals is essential for every developer.
This article provides a comprehensive overview of embedded system fundamentals, covering definitions, system components, real‑time concepts, microprocessor architectures, logic circuit basics, bus structures, and a wide range of hardware interfaces such as flash, RAM, GPIO, A/D, D/A, serial, USB, CAN, Ethernet, and power management techniques.
This article provides a comprehensive overview of RISC architecture and its major implementations—including ARM, x86/Atom, MIPS, and PowerPC—detailing their design principles, performance characteristics, market adoption, and relevance to embedded and mobile systems.
This article presents a step‑by‑step guide to designing and building a Gongfu tea‑making robot, covering embedded development basics, hardware modularization, controller design, platform comparisons, power supply considerations, and complete Python code for servo control and action sequencing.
This article provides a comprehensive overview of the MQTT protocol, covering its origin, design goals, packet structure—including fixed and variable headers, control types, flags, remaining length, and payload—while highlighting its suitability for IoT and limitations for large data transfers.
This article provides a comprehensive overview of embedded system fundamentals, covering definitions, development stages, hardware and software components, real‑time system characteristics and scheduling, microprocessor architectures, logic circuit basics, and a wide range of peripheral interfaces such as flash, RAM, bus, USB, CAN, and wireless technologies.
The iBaby infant sleep monitoring system combines real‑time temperature, heart‑rate, and posture sensing with Huawei LiteOS, LwM2M, and OceanConnect IoT to provide parents with instant alerts, detailed sleep analytics, and a browser‑based UI, addressing critical safety and sleep‑quality challenges for babies.
This article introduces the GPIO interface, explains how to configure pins for input or output, details the step‑by‑step process of opening connections, reading and monitoring inputs, writing outputs, and closing the connection, and provides a complete Raspberry Pi hardware demo with code and results.
From May 26‑28, the Huawei LiteOS Hackathon in Shenzhen gathered 200 onsite and 5,500 online participants, where teams built diverse low‑power IoT projects—ranging from visual doorbells to smart air purifiers—demonstrating edge‑cloud integration with Huawei LiteOS and OceanConnect, with winners announced and resources shared.
This article explains the role of Phase‑Locked Loops in Samsung S3C2410/2440 chips, detailing how MPLL and UPLL produce the FCLK, HCLK, PCLK, and USB clocks, the register settings and formulas used, and the associated power‑management modes.
Huawei LiteOS, an open‑source real‑time IoT operating system from Huawei, combines a lightweight kernel with sensor‑control, connectivity, and JavaScript runtime frameworks, offering low‑power, fast‑boot, and scalable features that position it as a potential cornerstone for future IoT and immersive AR/VR interfaces.
This article introduces the open‑source Contiki operating system for IoT, detailing its history, core features such as memory management and network stacks, source‑level modules, as well as its advantages, drawbacks, and why its ready‑to‑use development environment remains valuable for embedded developers.
This guide details how to inspect the device's flash for system files, detect a missing SD card, upload the system software via FTP, configure the boot file to point to the SD card, and complete the startup sequence to restore normal network operation.
This article explains the two-stage process by which the Linux kernel parses memory information passed from U‑Boot—first via ATAG tags and then through the boot command line—detailing the relevant code, data structures, and practical methods for modifying memory size on embedded platforms.
An embedded‑system developer discovers that FatFs reports FR_NO_FILESYSTEM on a correctly formatted SD card because the card’s partition information resides in the fourth MBR entry, which FatFs only checks in the first entry, and resolves the issue by re‑formatting with f_mkfs or upgrading to FatFs V0.10.
This article compiles a comprehensive set of embedded‑C interview questions covering preprocessors, macros, infinite loops, data declarations, static, const, volatile, bit manipulation, fixed‑address memory access, interrupts, code snippets, dynamic allocation, typedefs and obscure syntax, each with detailed explanations and example code.
This article explains the technical differences between "Internet+" and industrial‑grade IoT, outlines the three‑tier architecture (device, cloud, monitoring), describes the YFIOs embedded data‑configuration platform and YFCloud middleware, and presents several real‑world IoT case studies.
The article recounts how Exxon’s early 1970s funding helped Zilog create the influential Z80 microprocessor, yet the oil giant’s over‑ambitious acquisition strategy prevented it from becoming a lasting technology powerhouse like IBM or Intel.
