The entry function of simulation on ucgui3.90 vc6.0 is MainTask(), but the entry function of ucgui3.90a is different. I commented out the MainTask() function and compiled and ran it, but it was still ...
I included stdio.h in the header file and used pfrintf in main. Later, when the system was compiled, it said that the memory segment of my .text was not large enough. I looked at the initial cmd and f...
[local]1[/local] I used MDK4.22 before, but I found it had some issues. It would report errors when compiling, so I switched to 4.21.
The attached file is a compressed project package. This project pa...
The usart port of the stm32 I use is not enough. How can I expand it? What chip can I use to divide one channel into multiple channels, such as 4 channels?...
The three-phase AC current and voltage signal source designed by CPLD has a schematic diagram. All functions have been realized. This project is used on the three-phase electrical measurement standard...
ZLG's In-depth and Easy-to-understand ARM7 uses LPC2131. After reading SPI, I looked at ADC. There is no problem with the single SPI. Then I want to use ADC to pass the displayed data through SPI and ...
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]
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]
1. System Structure
This system is a simulation system of indoor air-conditioning temperature/humidity control system. The data acquisition and control center collects temperature/humidity...[Details]
LED lamps and bulbs are now rapidly replacing incandescent, halogen and CFL (compact fluorescent lamp) light sources in many general lighting applications. Flyback DC/DC converters are the power su...[Details]
At present, how various communication technologies will evolve after 3G is a focus of great concern in the industry. Especially for TD-SCDMA, whether it can achieve smooth evolution to the next gen...[Details]
1 Introduction
Ultrasound refers to elastic vibration with a frequency higher than the audible frequency limit (i.e., in the frequency band above 20 kHz). The propagation process of this vib...[Details]
Against the backdrop of global warming, energy conservation and emission reduction have become a global hotspot and focus, which has also sounded the clarion call for the take-off of the LED lighti...[Details]
The future energy storage hotspot is not coal or iron ore, but lithium. This lightest metal in nature may be the heaviest resource in the future energy landscape. China launched an ambitious electr...[Details]
In order to prevent the lithium battery from being damaged by abnormal conditions such as overcharge, over discharge, and overcurrent, a lithium battery protection device is usually used to prevent...[Details]
1 Introduction
Washing machines are an indispensable household appliance in the home, and they are developing very fast. Fully automatic washing machines are favored by everyone because of their con...[Details]
Button cells (also called button cells) are those batteries with equal or larger diameter and height. The current size range of alkaline button cells is specified as follows: diameter 4.8mm-11.4mm,...[Details]
Since the emergence of electronic system noise reduction technology in the mid-1970s, the Federal Communications Commission of the United States in 1990 and the European Union in 1992 proposed regu...[Details]
Linux and Android
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