I would like to ask if you have encountered similar problems: It seems that some standard ANSI library functions in EBoot cannot be used, such as malloc, free, sprintf, etc. I checked the TARGETLIBS $...
I would like to ask you: In the battery management, there is a sampling program, which reads and writes by operating AC97 (not through AD??). The program is as follows: BOOL Battery_sampleADC(DWORD *s...
[i=s]This post was last edited by qwqwqw2088 on 2014-3-17 08:55[/i] [p=20, null, left][color=rgb(51, 51, 51)]1. How to understand the voltage of an inductor and the self-electromotive force of an indu...
The project requires a rechargeable battery with 220V AC input and 5V 5A output (preferably with adjustable voltage). The size and weight should not be too large and the battery life should be about o...
Hello everyone! I have a question that is a bit high-level, haha. China imported about 230 billion US dollars of integrated circuits in 2013 and about 240 billion US dollars in 2014. I would like to k...
Why does my program stop running after a while or stops at a distance after it is downloaded to the board?
#include stm32f10x_lib.h #include "sys.h" #include "usart.h" #include "delay.h" #include "led...
Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
As a wireless broadband metropolitan area network standard, WiMAX technology has greater advantages than previous 3.5GHz MMDS products in terms of non-line-of-sight transmission and spectrum utiliz...[Details]
1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
Microcontrollers (MCUs), which are widely used in automotive electronics, are rapidly facing time and cost pressures. The main advantage of using MCUs has always been to create high-level system in...[Details]
1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
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1 Introduction
PROFIBUS is an international, open, and manufacturer-independent fieldbus standard. It is widely used in manufacturing automation, process industry automation, and automatio...[Details]
Capacitance Measurement
Used to verify that capacitors meet the manufacturer's specifications. For quality control, a group of capacitors may be placed in an environmental chamber and the cap...[Details]
Introduction
Automakers are working to reduce vehicle weight to reduce CO2 emissions and improve fuel efficiency. Designers are therefore seeking new technologies and design techniques that can...[Details]
LED technology has made rapid progress, and improvements in chip design and materials have promoted the development of brighter and more durable light sources, and the scope of light source applica...[Details]
Since AC mains power may experience power outages, voltage sags and surges, continuous undervoltage and overvoltage, and frequency fluctuations during supply, these factors will affect the continuous ...[Details]
Introduction
In industrial control, speed measurement is often required. Generally, a contact tachometer is used. This tachometer must be placed against the center of the shaft to measure. It...[Details]
0 Introduction
Under normal circumstances, the three-phase power in the power system is symmetrical, and they meet certain amplitude and phase conditions; but when the load changes, the syst...[Details]
The invention of the steam engine ushered in the first conversion of internal energy and mechanical energy for mankind, and the birth of the internal combustion engine at the end of the 19th centur...[Details]