This guide explains why refactoring embedded software is uniquely challenging, outlines preparation steps, presents basic to advanced refactoring techniques, shows hardware‑specific and real‑time optimizations, describes verification methods, and provides a concrete sensor‑data case study with measurable results.
This article showcases a collection of sophisticated MCU practices—from UART idle‑line interrupts and timer‑based frequency measurement to RTOS scheduling, DVFS power management, flash wear‑leveling, hardware AES, Kalman filtering, bus arbitration, and a GPIO‑driven camera interface—demonstrating how microcontrollers can achieve high‑performance, low‑power, and secure solutions.
The article explains Google’s Context Hub Runtime Environment (CHRE) architecture, detailing how apps use ContextHubManager to communicate via socket and FastRPC with the HAL, which controls Nanoapps that run on low‑power processors, and outlines the code structure and Nanoapp development workflow.
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.
NB‑IoT provides a telecom‑grade, low‑power solution for densely populated live‑event venues, delivering up to 50 000 devices per base station with enhanced indoor coverage, reliable data transmission via CoAP and MQTT, and configurable latency modes that bridge the gap until widespread 5G deployment.
This article provides a comprehensive overview of NB‑IoT, covering its evolution, physical‑layer specifications, four key characteristics—ultra‑low power, ultra‑low cost, strong coverage, and massive connections—its communication protocols, and real‑world smart‑city applications.
NB‑IoT, a cellular IoT standard defined by 3GPP, offers ultra‑low power, massive coverage, and low cost, enabling diverse applications such as livestock monitoring, remote metering, smart locks, street‑light control, fire‑safety sensors, and asset tracking, thereby addressing the growing demands of the IoT market.
NB‑IoT, the narrow‑band IoT technology, is rapidly transforming smart water metering by offering low power consumption, deep coverage, and massive connectivity, addressing traditional meter challenges such as manual reading, network deployment complexity, and cost, while supported by strong government policies and industry adoption.
This article explains the rise of low‑power wide‑area networks, compares LPWAN technologies such as LoRa, SigFox, LTE‑M and NB‑IoT, details the standards evolution, advantages, deployment challenges, and potential IoT applications like smart parking, city infrastructure, and environmental monitoring.
