In engineering development, it is sometimes necessary to first confirm which part of the code consumes time in order to optimize the program. So, how do we measure code execution time? In previous articles, two methods were mentioned: using an oscilloscope to measure I/O level changes to calculate code execution time, and using the System … Read more
Continuing from the previous article, we have already learned about the porting and startup process of FreeRTOS. Today, we will continue to study the task management part of FreeRTOS, starting with understanding what a task is. 1. Task 1.1 Introduction to Tasks (1) In bare-metal systems, we generally use a front-and-back system for development. If … Read more
51 Microcontroller Hardware System The 51 microcontroller (such as the Intel 8051 series and its derivatives) is a classic8bit microcontroller widely used in embedded system development. 1.Central Processing Unit (CPU) Architecture: Based on an8bitCISC (Complex Instruction Set) architecture, with the core being theMCS51 instruction set. Functional Modules: Arithmetic Logic Unit (ALU): Performs arithmetic and logical … Read more
On May 1, 2025, Nanjixiong learned that Xuzhou Aerospace Meilida Automatic Welding Equipment Co., Ltd., leveraging its profound welding technology accumulation and independent research and development capabilities, has officially launched the “Plasma Arc Melting Wire + Laser” hybrid additive manufacturing technology and robotic system equipment. This breakthrough overcomes the bottlenecks of traditional arc melting wire … Read more
The Kirin 980 and Apple A12 have already transitioned to the 7nm process technology, and Qualcomm has confirmed that the next generation flagship chip will be built on a 7nm process. However, the naming and detailed specifications of this chip remain undecided. Recently, XDA Developers discovered the Qualcomm Snapdragon 8150 chip in the unreleased Android … Read more
At Xiaomi’s spring launch event, the company officially unveiled its first professional imaging chip, the “Surge C1,” which features a dual-filter configuration that enables parallel processing of high and low-frequency signals, improving signal processing efficiency by 100%. Coupled with self-developed algorithms, the imaging performance of 3A (AF auto-focus, AWB auto white balance, AE auto exposure) … Read more
Recently, Qualcomm released the successor to the Snapdragon 855 – the Snapdragon 855 Plus. Although this new SoC can only be considered an overclocked version at best (CPU core frequency increased from 2.84GHz to 2.96GHz,GPU frequency increased from 585MHz to 672MHz), many manufacturers are eager to adopt it. Among them, the Asus ROG Phone 2 … Read more
Recently, Samsung Exynos held an executive interview, revealing a lot of information: â‘ The brand new Samsung Exynos 1080 processor is about to be released, based on 5nm process technology, with a CPU using ARM’s latest Cortex-A78 architecture and a GPU using the latest Mali-G78 architecture. This SoC is specifically designed for the Chinese market, featuring … Read more
Earlier reports indicated that the Samsung S24 series would not only feature the Snapdragon 8 Gen 3 processor but also see the return of the Exynos series, with the S24 and S24+ expected to be equipped with the Samsung Exynos 2400 processor in certain regions of Europe and Asia. New information regarding the performance of … Read more
The Cortex-A55 processor is a mid-range low-power processor that utilizes the Armv8-A architecture. The diagram below illustrates the functional structure of this processor.Functional OverviewThe system registers of this CPU primarily provide the following functions: System control and configuration Memory Management Unit (MMU) configuration and management Cache configuration and management System performance monitoring Generic Interrupt Controller … Read more