The supporting materials for this chapter are in the directory of "Xunwei iTOP-i.MX6 development board data summary (excluding CD data)\06_iTOP-iMX6 development board Android application development e...
FtpConnect SUCC! FTPLIB: socket fail, errno=55 FATAL ERROR! FAIL TO CREATE SOCKET, SYS SOURCE MAY BE NOT ENOUGH! FtpConnect SUC C! This message should mean that FTP has been established successfully, ...
In AT89C51, the address of P0 is 0x80, sfr P0 = 0x80. I access the register in the following way, why does the value of address 0x80 remain unchanged? ? *(char *)0x80 = 0x22;...
Connect the PC to the WinCE device via a USB (2.0) cable, and send data to the WinCE device in real time (or both parties transmit data). Do you have any good solutions? I have tried communicating via...
Today is a good day! After long-term unremitting efforts and the support of netizens on the forum, I finally completed the required functions of the USB driver (firecrackers...^_^) But... During the i...
Serial communication is necessary for debugging. It must be equipped. Use uart2 P1.3 P1.4 to connect pl2302 serial line source code:The next difficult part: mpu3050 adxl345, please stay tuned! :Laugh:...
This program is written to simulate the serial port hardware mechanism. When used, a timed interrupt can be set with a time interval of 1/4 baud rate. The receiving function is called once for ea...[Details]
Do you often have to add brake fluid to your car's brakes? The fact that you need to pump out the brake fluid to make sure there is no gas in the brake fluid line may not be done by the car owner h...[Details]
1 Introduction
With the acceleration of the pace of urban modernization, society has higher requirements for urban road lighting and urban lighting projects. The state has clearly required tha...[Details]
For a long time, due to the limitation of hardware conditions, the display devices of traditional small handheld devices such as PDA are usually monochrome LCD, and the user interface is very simpl...[Details]
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
DSP (digital signal processor) is used more and more frequently in today's engineering applications. There are three main reasons for this: first, it has powerful computing power and is capable of ...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
Since the No. 4 blast furnace of Handan Iron and Steel was put into operation in 1993, its external equipment has been seriously aged, and the original PLC control system TDC3000 of the hot blast furn...[Details]
This week, Microsoft held its 2012 Microsoft Worldwide Partner Conference (WPC) in Toronto, Canada. At the conference, Microsoft showed its new products and services to partners around the world. A...[Details]
Abstract: The output of high-range acceleration sensor is less than 10 mV under the excitation of small signal. The noise of traditional test system may cover such small voltage signal, so that hig...[Details]
System Overview
The system consists of a signal preprocessing circuit, a single-chip computer AT89C2051, a systematic LED display module, a serial port data storage circuit and system software...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
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 gene...[Details]
Abstract: In order to realize wireless automatic alarm and monitoring of major safety places, based on the basic principle of pyroelectric infrared sensing, a detector for receiving infrared radia...[Details]