I have a delay function /***********************************************/ /*Function name: delay() */ /*Function function: delay function, single delay of about 25us */ /*Entry parameter: t; */ /*Outp...
[i=s]This post was last edited by Rambo on 2017-12-28 14:02[/i] [indent][font="][size=14px]In this post, we will explore some basic concepts of image pyramids, how to use OpenCV functions pyrUp and py...
I have a touch screen with WinCE 3.1 system, which has two serial ports, 232 and 485. I want to remotely execute a program in WinCE. How can I do this? I searched for some information and it seems tha...
[i=s]This post was last edited by cl17726 on 2014-10-21 21:25[/i] Yuantong's delivery speed was super fast this time, just like SF Express, or even faster than SF Express. I received it while I was at...
I tried writing data to a CS address in ARM7, but it kept failing. Later, I found that the CS signal was always high. I confirmed that the address was correct. This CS signal was simulated with GPIO. ...
The usage of SPI is much simpler than that of I2C. There is no start byte and end byte such as START and STOP, and there is no need for ACK confirmation between the master and slave devices.
This is b...
High efficiency and low standby power consumption are two major challenges in today's switching power supply design. Resonant topology or LLC topology is becoming increasingly popular because it ca...[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]
In this article, the high-performance DSP developed by TI can be used as an effective confidentiality method if it is applied to PC encryption cards.
As an effective network security solution,...[Details]
With the development and widespread application of computer technology, especially in the field of industrial control, computer communication is particularly important. Although serial communication g...[Details]
Contact resistance
is the resistance to current flow through a closed pair of contacts. This type of measurement is performed on devices such as connectors,
relays
, and switches. The...[Details]
1 Introduction to HART Protocol
HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, was launched by Rosemen in the U...[Details]
Abstract: With the development and construction of BeiDou II system, China will shift from the situation dominated by GPS to the situation dominated by BeiDou II global navigation system independen...[Details]
LED guardrail lights use fluorescent tubes or LEDs as light sources and continuous guardrails as carriers to form an approximately linear guardrail light strip. This article mainly introduces...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
Our flight had just begun to descend when a gentleman sitting next to me turned to talk to me about engineering—he had seen me reading an engineering journal. The gentleman next to me said that he ...[Details]
1. The composition and structure of mobile phone lithium battery
Mobile phone lithium batteries are mainly composed of plastic shell upper and lower covers, lithium battery cells, protection c...[Details]
Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]
1 Introduction
Lijia'an Yellow River Diversion Culvert is a large gravity diversion gate in the lower reaches of the Yellow River. The Yellow River Diversion Culvert is located in Lijia'an Vi...[Details]
The circuit has overcharge protection, over-discharge protection, over-current protection and short-circuit protection functions. Its working principle is analyzed as follows:
1 Normal state
...[Details]
As countries around the world are leaning towards the new energy battery industry, lithium-ion power batteries, as the ideal energy source for the development of the 21st century, are attracting mo...[Details]
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