Abstract: Considering the characteristics and requirements of smart homes, this study adopts a combination of wireless ZigBee sensor networks and power line communication technology. This approach not only realizes the low power consumption, low cost, and flexible networking capabilities of ZigBee, but also utilizes existing household power lines as communication channels through power line carrier … Read more
Previously, we discussed how to run the RISC-V kernel on QEMU. Now, let’s talk about how to use Eclipse + GDB to debug the kernel on the QEMU platform. ${SIFIVE_DIR} is the local root directory of the freedom-u-sdk open-source project. 1. Configure BBL Configure the bootloader and generate debugging information. Enter the ${SIFIVE_DIR}/work/riscv-pk directory, which … Read more
Three important concepts in the Linux device model are bus, device, and driver. That is, bus, device, driver, and in fact, the kernel defines some data structures such as struct bus_type, struct device, and struct device_driver. These three important data structures come from one place, include/linux/device.h. We know that there are many types of buses, … Read more
This article is a featured article from the Kanxue Forum, author ID: Q老Q 1 Entering U-Boot Shell from UART After opening a certain router device, locate the UART interface and connect the UART pins to the computer through TTL. Power on the router and observe the startup log. Boot SPI NAND start read bootheader start … Read more
Linux | Red Hat Certified | IT Technology | Operations Engineer 👇Join our technical exchange QQ group with the remark 【Public Account】 for faster access 1. First, download the i2c-tool and memtool32 tools directly to the development board for use: 2. i2cdetect command: This command is used to scan for devices on the i2c bus … Read more
Recently, NetEase Cloud Classroom opened a course called Linux Kernel Analysis. I have always been interested in operating systems and the essence of computers, so I took a look. In the first class, the teacher asked students to write a blog about the first lesson as an assignment. I was quite surprised by this novel … Read more
Click the blue text Follow us Source from the Internet, please delete if infringing Everyone knows that computer programming languages are usually divided into three categories: machine language, assembly language, and high-level languages. High-level languages need to be translated into machine language to be executed, and there are two types of translation methods: compiled and … Read more
This article is an excellent piece from the Kanxue Forum. Author from Kanxue ForumID: abcz316 Linux is an open-source kernel system. I am also very fond of embedded Linux systems, especially its kernel source code, which is written in a style that I really appreciate. This driver was previously written during my spare time for … Read more
Stage One: Obtaining the Interrupt Number Each CPU has the ability to respond to interrupts. When a CPU responds to an interrupt, it follows the same process. This process is the interrupt service routine provided by the kernel. Upon entering the interrupt service routine, the CPU has automatically disabled interrupt responses on that CPU, as … Read more
As an open-source system, Linux is often used by developers for software development. For beginners, Windows seems so convenient and easy to use, so why not develop programs on it? What are the differences between Linux and Windows? This article summarizes this question, let’s explore the differences between Linux and Windows systems together. Differences Between … Read more