PROFIBUS interface is an RS485 serial port, typically using a SUB-D female connector, with the pin definitions as follows: Pin 3 is connected to the signal line B (red) of the PROFIBUS cable, while pin 8 is connected to the signal line A (green). Pins 2 and 7 provide a 24V power supply which can … Read more
Memory, CPU, bandwidth, and disk usage are common aspects to monitor in Linux operations. Understanding how to check this information is a necessary skill. Below are several commonly used commands. General CPU and Memory top: Usage command: top Top Half %us Indicates the CPU usage rate of user space programs (not scheduled by nice) %sy … Read more
In electronic engineering and embedded development, terms like CPU, MCU, MPU, SoC, DSP, ECU, GPU, and FPGA are often mentioned. However, due to similar names and overlapping uses, beginners often feel confused. This article will comprehensively analyze their characteristics from four perspectives: definition, performance, usage, and price. — 1. CPU (Central Processing Unit) Definition The … Read more
Discussion on Three Issues in Functional Safety of Embedded Systems Three Issues in Functional Safety of Embedded System Functional safety is the basic requirement of modern industrial products. This paper discusses three related topics: The first is that the functional safety demand of automobile is probably higher than that of airplane. This point may affect … Read more
Today, I received a Weibo push notification that I found quite interesting. It was about the launch event of the Exynos 9820 mobile processor from South Korea. This processor was actually released back on November 14, 2018, making it old news. However, a blogger I follow reposted it, and Weibo brought it back to my … Read more
Today, I received a Weibo push notification that I found quite interesting. It was about the release of the Exynos 9820 mobile processor from Samsung. Originally, this processor was released on November 14, 2018, which is old news, but a blogger I follow reposted it, and Weibo pushed it to me again. The blog mentioned … Read more
When your server’s CPU reaches 100%, how do you troubleshoot the abnormal fault? At the end of this article, a shell script will be shared to help you troubleshoot the Linux system CPU 100% anomaly. Yesterday afternoon, I suddenly received an operations email alert, indicating that the data platform server’s CPU utilization had reached 98.94%, … Read more
▲ For more exciting content, please click on the blue text above to follow us! Engineers are familiar with CPU and MCU, and there is another member that everyone often hears about: DSP! What exactly is DSP? Let’s explore through a story! Source: Huawei Kirin Recommended Reading How many MOSFETs does a car actually need? … Read more
Zuosi Automotive Research released the “2022 ADAS Domain Controller Key Component Trend Analysis Report”. Zuosi Automotive Research has compiled research on the current mainstream high-performance ADAS domain controller products and technical information in China, such as Huawei MDC and DJI ADAS domain control prototypes. This article will briefly analyze key components of ADAS domain controllers, … Read more
1. Machine Language Machine language is a collection of machine instructions, which are commands that a machine can correctly execute. The machine instructions of an electronic computer are a series of binary data, which the computer converts into a series of high and low voltages to drive its electronic components for computation. 2. Assembly Language … Read more