Application Background In practical scenarios, we often need to collect subdomains of target sites, usually using tools like subdomain excavators, oneforall, etc., or space search engines like fofa, shodan, and eagle map, or Google syntax. Besides the conventional methods, we can also utilize the Linux text processing tools we learned earlier to collect subdomains. Steps … Read more
What Is Zephyr? Zephyr is a new generation real-time operating system (RTOS) designed for various hardware architectures. It offers scalability, optimization, and security, making it one of the preferred choices among developers. Scalability One of Zephyr’s greatest advantages is its scalability. It can be easily applied to various hardware architectures, including ARM, x86, RISC-V, etc., … Read more
The Internet of Things (IoT) revolution is in full swing, with various LPWAN technologies emerging rapidly, each vying to seize market share. LoRa, as one of the earliest commercialized LPWAN technologies, has been deployed in 95 countries globally, with over 500 alliance members. In China, Alibaba has announced its comprehensive promotion of LoRa coverage and … Read more
▲ Click the above Leifeng Network to follow Proactive security, extensive enterprise deployment, LoRa’s five major advantages make it a globally applicable IoT technology. This article is reprinted from | Network Optimization Mercenary The IoT revolution is in full swing, with various LPWAN technologies emerging rapidly, all eager to seize a foothold. LoRa, as one … Read more
First, let’s look at two news headlines: Major Security Vulnerability Found in Wi-Fi! Affects All Wireless Devices At This Moment! Global Wi-Fi is Not Safe Scared? Has the 13-year-old WPA2 been cracked? Recently, researcher Mathy Vanhoef from KU Leuven University in Belgium publicly released a study on the security of WPA2/WPA, claiming that the protocol … Read more
Nowadays, Wi-Fi has become a necessity in our lives.However, you have probably seen many news stories like this:Hackers stealing personal information through home Wi-Fi, causing privacy breaches and even financial losses.You might wonder, is it really that easy for this to happen, or is there a way to prevent your own Wi-Fi from being stolen? … Read more
Looking Beyond the Phenomenon to the Essence Functional Signal Signal communication is a basic function of the vehicle ECU; without it, nothing can be discussed! This can be plainly stated as dbc and HIL, which are the starting points of ECU’s basic capabilities~ Bus 10[2] discusses the release of excel2dbc tool 2.0.2, adding signal groups … Read more
Introduction In microcontroller programming, the use of local variables is fundamental for data manipulation within functions or code blocks. The lifecycle of local variables starts from their declaration and ends when the containing function or code block completes execution. During this process, local variables may be read and written multiple times to store and pass … Read more
Hello everyone, I am EE Xiaoxin. EEWorld user littleshrimp received an engine ECU from a scrap Volkswagen car. After his thorough disassembly, he discovered many common classic chips, as well as many unique design aspects. (The original post comes from the EEWorld forum, welcome to enter the link to communicate with the author of this … Read more
01 Introduction First, let’s take a look at a software architecture diagram: 1.1 Introduction to ARMv8-M TrustZone The concept of TrustZone technology is not new. This technology has been used in Arm Cortex-A series processors for many years and has now expanded to cover Armv8-M processors. At a high level, the concept of TrustZone technology … Read more