$HandlerLabel Sub sp,sp ,#4; stmfd sp!,{r0}; ldr r0,=$HandleLabel ldr r0,[r0]; str r0 ,{sp ,#4}; ldmfd sp!,{r0,pc} This is a piece of code in the arm interrupt. There are a few places that I don't qui...
[size=24px]I posted twice about transferring my own development version, and you deleted them. At least you should give me a reason!!! 1. This is a non-technical area, and there is no top information ...
Today I lit up the LCD1602, and the display effect is as follows:Hardware wiring: P07---------RS P10---------E P11---------D4 P12---------D5 P13---------D6 P14---------D7 The code is as follows:...
Forum member @数码小叶 encountered a puzzle: Phone A has taken out the SIM card, but can still make and receive calls? Phone B has a SIM card inserted, but can only make and receive calls and text message...
Brothers, when using it, they can compile it by changing the header file or the content of other files. I uninstalled and reinstalled it, and it still can't compile. If any hero encounters this situat...
Please take some time to look at it and help me. Thank you.The perpetual calendar I made uses 0.56-inch digital tubes. In order to increase the brightness, I used 4 595s at a higher cost, using 1/4 sc...
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
This article discusses how to wake up a touch-sensitive device such as a tablet without touching the device, using basic gesture recognition and novel proximity sensors. The article discusses the p...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guang...[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]
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]
On the afternoon of July 10, Beijing time, Taiwan's largest chip designer MediaTek expects its smartphone chip shipments to grow by double digits in the third quarter of this year, and the company is ...[Details]
Experimental tasks
A DS18B20 is used to form a temperature measurement system. The temperature measurement accuracy reaches 0.1 degrees. The temperature range is between -20 degrees and +50 de...[Details]
In 2012, more than half of the cars in the European, Japanese and American car markets will be equipped with color displays, navigation systems, satellite communications and other in-vehicle infota...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guangzho...[Details]
introduction
At present, the research on micron and nanotechnology is very active, which has led to the rapid development of microtechnology and micro-mechanical electronic system (MEMS) t...[Details]
1 Battery technology determines the fate of energy vehicles
Regardless of whether new energy vehicles are hybrid or pure electric vehicles, they cannot do without the core technology of batter...[Details]
1 Introduction to the overall system solution
The hardware part is mainly used to amplify the sound. When the sound is loud enough, the signal can be introduced into the microcontroller for de...[Details]
Infrared remote control is widely used in home appliances, but the remote controls produced are not compatible with each other. The universal remote controls commonly seen on the market can only co...[Details]
introduction
Sudan's Muglad Oilfield is a large oilfield jointly invested, developed and constructed by a four-party consortium of China, Malaysia, Canada and Sudan. It consists of 8 satellite...[Details]
In the TV monitoring system, in order to complete the collection of information from various information points (video, audio, alarm signal) and the control of various front-end devices (PTZ, lens,...[Details]