1. Overview of System Calls A system call is a set of interfaces provided by the operating system kernel to user-space programs, allowing user programs to request services from the kernel. It is a controlled communication mechanism between user space and kernel space. Why Do We Need System Calls? Permission Isolation: User programs run in … Read more
This issue records the latest news and shareable content about Zephyr, published in the last week of each month. This magazine is open source (GitHub: lgl88911/Zephyr_Fans_Monthly[1]), and contributions, issue submissions, or recommendations for Zephyr content are welcome. Project Data Excluding merges, 367 authors pushed 1,770 commits to the main branch and 1,884 commits to all … Read more
Thousands of sensors are performing a mysterious “electromagnetic ballet”—they are not ordinary components, but “industrial worker bees” equipped with ZigBee technology. This wireless protocol, inspired by the communication of bee colonies, is reconstructing the neural network of the industrial Internet of Things with low-power “swarm intelligence,” enabling cold machines to learn “wireless collaboration” and even … Read more
What are Zigbee and Z-Wave? How do they differ? To ensure seamless collaboration among smart home devices, the smart home hub relies on wireless communication protocols—of which the two most mainstream standards are Zigbee and Z-Wave. These two standards began empowering smart living long before the concept of “smart home” became popular. Although both utilize … Read more
Click the blue text to follow us Introduction There are various types of wireless Bluetooth headsets on the market, which offer excellent sound quality and convenient control features. Wireless Bluetooth headsets not only free our hands but also allow us to enjoy calls and music more freely. The sales of wired headsets are gradually declining, … Read more
[Image] The Bluetooth connection at He Yuan! [Image][Image] The “Bluetooth” technology is a wireless communication technology that has made our lives more convenient and brought us closer together. There are many wireless connections hidden within the He Yuan campus. Today, let’s explore with He Xiao Gong! [Image][Image] 01 Class: “Bluetooth” is Connected [Image] The cold … Read more
As the gentle breeze sweeps through every corner of the campus, there is always a melody that quietly resonates in our ears. It is not just the leap of notes, but also the soft murmurs of youthful memories. Let us stroll through the vibrant and youthful campus of Nanjing Medical University, following these familiar melodies, … Read more
BluetoothBQB certification process timeline mainly includes the following stages: RegistrationSIG Membership: Complete registration on the Bluetooth Special Interest Group (SIG) official website. If you are familiar with the process and have all the necessary documents ready, it usually takes a few days to about a week to complete; if you are unfamiliar or the documentation … Read more
Prices have halved! Why do domestic chips make international giants tremble? The blood and tears of engineers in the startup world are revealed. Can you believe it? A domestic chip has put the star products of international giants in an awkward position! Five years ago, an engineer from a major company mocked domestic chips as … Read more