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adr r0, _start gets the current execution position of _start, and the effective address is determined by pc+offset.
ldr r0, =_start gets the absolute address, which is determined during linking;
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According to the Peking University School of Information Science and Technology, the research team led by Professor Zhang Zhiyong and Professor Peng Lianmao from the Department of Electronics, Peking...[Details]
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I have been studying arm for 2 months, and now I feel that I understand the boot process of arm in Nand flash mode. Now I come here to record it to express my extremely happy mood. Without further ad...[Details]
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1 Introduction
The data processed by DSP often needs to be transferred to PC for storage and reprocessing, so the high-speed communication problem between DSP and PC must be solved. This design u...[Details]
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I have seen this question before, and now I suddenly remembered it. I think it is quite important. I opened the book and found this method. It is better to remember it. Haha, who made me not learn an...[Details]
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In view of the fact that a single ordinary type of fire detection alarm can no longer meet the demand, the use of multiple sensors to comprehensively collect various abnormal information before a f...[Details]
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AT&T today announced the launch of a new location-based emergency call routing system in the U.S. The system is designed to route wireless 911 calls to the appropriate 911 call center based on the ...[Details]
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Step 1: Cut out the LCD driver that comes with the board
Cut out an LCD. Different from the previous drivers like LED and buzzer, you can directly comment it in make menuconfig and compile to ...[Details]
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When learning ARM embedded development, especially for beginners, you should not spend too much energy on embedded system transplantation and Linux kernel research and learning too early. These attrac...[Details]
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EMC (Electromagnetic Compatibility) is electromagnetic compatibility. It is a technology that studies electromagnetic interference. Electromagnetic interference is the electromagnetic energy around us...[Details]
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Oversampling and digital filtering can help to reduce the requirements on the antialiasing filter preceding the ADC. Reconstruction DACs can use the principles of oversampling and interpolation in ...[Details]
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Jiwei.com reported on January 21 that yesterday, Chnbrand, an authoritative brand rating agency, released the 2021 (7th) China Customer Recommendation Index (C-NPS®) brand rankings. Let’s take a look...[Details]
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Capella Technology, represented by the Quan Ding Group, pointed out that the Energy Star 5.0 specification has required TVs to have relevant requirements for the power consumption of the entire machin...[Details]
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1. Problem Statement
Application Overview
The design of motor control systems is a multidisciplinary problem involving mechanical, electrical, and control systems. OPTIMUS can explo...[Details]
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There may be various faults in a car, such as a fault light on the instrument panel, the car being unable to start, strange noises coming from the car, etc.
The vast majority of these fa...[Details]