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After more than ten years of contact, I found that when consumers choose speakers, they often ask: What is its efficiency? What is its impedance? But few people ask: What is its maximum sound pres...[Details]
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According to Tianyancha, Huayuan Zhixin Semiconductor (Shenzhen) Co., Ltd. (hereinafter referred to as Huayuan Zhixin) has undergone a number of industrial and commercial changes, with the addition o...[Details]
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Introduction
Permanent magnet synchronous motor (PMSM) based on sine wave has the advantages of high power density, high efficiency and low rotor loss, and has been widely used in the field...[Details]
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On December 6, Envision Power officially announced that it will build a power battery super factory in Florence County, South Carolina, with a planned annual production capacity of 30GWh, which also m...[Details]
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1. KMALLOC
kmalloc is a powerful and high-speed tool (unless blocked). The allocated memory is continuous in physical memory and retains the original data (not cleared). Prototype:
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The arrangement of LEDs and the specification of the LED light source determine the basic driver requirements. The main function of the LED driver is to limit the current flowing through the L...[Details]
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Regarding exception handling, it is divided into three parts: 1. ARM exceptions and modes: core operations when handling exceptions, introduction to several modes. 2. Vector table: 3. Exception prio...[Details]
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With the increasing use of portable devices such as smartphones and tablets and the rise of near field communication (NFC) technology, access control systems need to be able to complete a variety...[Details]
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MediaTek held a new product and technology conference in Shanghai today with the theme of "Gaming Chip Awakens Combat Power", launching the first mobile phone chip Helio G90 series and chip-level gam...[Details]
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When charging piles were included in the seven major projects of new infrastructure in 2020, people seemed to see that a trillion-yuan market was about to be tapped, and more than 26 provinces and ci...[Details]
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This part of the code contains two functions, among which the TIM5_CH1_Cap_Init function is used for the input capture setting of TIM5 channel 1. Its setting is the same as the steps we mentioned abo...[Details]
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"Finally I've waited for you." On the morning of February 22, Ms. Bian, who lives in Genshanmen, Hangzhou, Zhejiang, posted a message on WeChat Moments, along with a selfie in front of the No. 76 p...[Details]
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1 Introduction
Fuzzy control is one of the most active and fruitful fields in the current research of automatic control. Fuzzy theory is the latest technology that can be used to softly process...[Details]
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In the future, Apple Watch may not rely on touch to detect gestures, but instead monitor the veins in the user's wrist to determine the movement of the hand itself. Currently, Apple Watch provi...[Details]
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I have recently been reading "Writing Embedded Operating Systems Step by Step". I feel that this book is very good. Many parts are explained very clearly and are highly operational. I plan to read,...[Details]
PCB Design
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