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Nor Flash Programming Process uboot ----- SDRAM ----- Nor Flash Therefore, we need to set the CPU, SDRM address, Nor Falsh address Initialization Code /**************************************...[Details]
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0 Introduction
Ultrasonic waves are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be generated by ...[Details]
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Introduction: This article mainly introduces a density measurement method that uses the resonance principle to measure, and analyzes in detail the advantages and disadvantages of this density measure...[Details]
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AVR port is a true bidirectional port, unlike 51 pseudo bidirectional. This is also an advantage of AVR, just pay attention to DDRn when operating. True bidirectional port is not as convenient as pse...[Details]
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1. GPIO Introduction The STM32 IO port has 8 configuration modes: enter Floating input GPIO_IN_FLOATING ——Floating input, can be used for KEY recognition, RX1 With pull-up input GPIO_IPU——IO interna...[Details]
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EXTI Each interrupt/event has independent triggering and masking, and each interrupt line has a dedicated status bit. It supports up to 23 software interrupt/event requests. When detecting external s...[Details]
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Recently, after old photos of film and television stars such as Jiang Qinqin, Brigitte Lin, and Leslie Cheung were restored by AI, their stunning beauties were once again praised by netizens. It is u...[Details]
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What is OLED burn-in, burn-in or image retention? It refers to the phenomenon that frequent and continuous playback of images on a TV leaves permanent marks on the panel, which is obviously not suita...[Details]
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Basic functions: clock display, use buttons to adjust the time, minutes #include reg52.h #define uint unsigned int #define uchar unsigned char sbit en=P3^4; sbit rs=P3^5; sbit rw=P3^6; s...[Details]
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热阻(thermal resistance)，是物体对热量传导的阻碍效果。热阻的单位为℃/W，即物体持续传热功率为1W时，导热路径两端的温差。led的热阻是指LED点亮后，热量传导稳定时，芯片表面每1W耗散，PN结点的温外与连线的支加或散热基板之间的温度差就是LED的热阻Rth。热阻值一般常用θ或是R表示，其中Tj为接面位置的温度，Tx为热传到某点位置的温度，P为匯入的发热功率。热阻大表示热...[Details]
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LED display screens based on mobile data use the GSM/GPRS/CDMA/PHS network, which has the widest coverage and is the most stable. They can update the content of LED display screens in real time and...[Details]
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In the era of rapid development of the Internet of Things, motors are the power core of various devices, and the quality of their control technology directly determines the performance and efficien...[Details]
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If you’ve seen an electric or hybrid car on the road, or if you own one, you’ve witnessed the transformation of the transportation industry toward electrification. But another transform...[Details]
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At the Black Hat USA conference in Las Vegas, researchers demonstrated a way to bypass facial recognition: using glasses and tape to unlock an iPhone. The demonstration came from researchers ...[Details]
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As a representative of China's new local forces, Xpeng Motors' series of actions in "reducing costs and increasing efficiency" in intelligence this year may further widen the gap with other automak...[Details]
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