I want to use channel 3 of general-purpose timer TIM3 to measure the frequency of an external square wave, but I don't know how to set it. My program:void TIM3_Configuration(void){TIM_TimeBaseInitType...
The platform is 2440+wince5.0. If the writing speed is too fast, data will be lost. I suspect that the bus frequency is too low. I don't know how to change it. Does anyone have a good solution? The co...
Causes of LED damage and methods of LED circuit protectionThis article analyzes the main causes of LED damage and discusses several common protection methods for LED circuits. For details, please see ...
I drew a 2812 board myself. When loading the program during simulation, sometimes it can be loaded and sometimes it cannot. It seems that the program can be loaded for the first time after power-on, b...
[i=s]This post was last edited by qwqwqw2088 on 2014-10-19 16:47[/i] [color=#000][font=宋体, arial]Here is a simple and practical emergency light. It can automatically switch power supply when power out...
[i=s]This post was last edited by donatello1996 on 2018-1-18 23:53[/i] External interrupts and timer interrupts are both very important and commonly used interrupts in microcontrollers. The purpose of...
At present, the development of wireless power supply technology for electric vehicles (EVs) is becoming more and more active. In 2012, Volvo of Sweden established Volvo Technology Japan in Tokyo as...[Details]
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]
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]
Automotive applications are particularly sensitive to EMI events, which are unavoidable in a noisy electrical environment consisting of a central battery, bundled wiring harnesses, various inductiv...[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]
The Mobile Industry Processor Interface (MIPI) Alliance is an organization responsible for promoting the standardization of software and hardware in mobile devices. It has released the D-PHY specif...[Details]
In order to highlight the concept of "energy saving and environmental protection" of intelligent buildings, solar street lights are designed for intelligent communities. The inclination and capacit...[Details]
With the continuous improvement of the requirements of intelligent building security systems and the continuous improvement of people's safety awareness, indoor anti-theft has gradually attracted peop...[Details]
1 Introduction
Ultrasonic waves have strong directivity, slow energy consumption, and can propagate over long distances in a medium, so they are used for distance measurement. Ultrasonic detec...[Details]
Although it is relatively easy to check the stability of a simple amplifier at lower frequencies, it may be much more difficult to evaluate the stability of a more complex circuit. This artic...[Details]
At very low temperatures, certain metals and alloys lose their resistance to electric
current
and become
superconductors
. Two parameters that are often measured are the transition ...[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]
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