I used STM32 to write a matrix keyboard program. It was originally a query method, but now it has been changed to a timer method.Schematic diagram:void KEY_Init(void){GPIO_InitTypeDef GPIO_InitStructu...
1. Interrupt nesting, the control bit of the priority430 general interrupt is the GIE bit in the status register (this bit is in the SR register). When this bit is in the reset state, all maskable int...
[size=4]1. Not familiar with the internal structure of FPGA and the basic principles of programmable logic devices. Why is FPGA programmable? I am afraid that many novices do not know, and they do not...
Transmit power is the main technical indicator of radio transmission equipment and one of the technical indicators that radio management departments need to test. This article mainly introduces severa...
While I was working hard on ucLinux, I also became interested in embedded real-time operating systems. The first real-time operating system I came into contact with was uC/OSⅡ. At that time, I started...
[i=s]This post was last edited by cybertovsky on 2022-4-9 21:20[/i]Last week, the letter A fell from top to bottom.
This week, we will implement long press and short press to eliminate the letter A. T...
1 Introduction
With the extensive application of power electronic devices, a large amount of harmonic current is injected into the power grid, thereby polluting the power grid. In order to limi...[Details]
1. Why do we need to do electromagnetic compatibility design for products?
Answer: To meet product functional requirements, reduce debugging time
,
make products meet the requirements o...[Details]
As the living standards of society continue to improve, more and more people are beginning to redefine the quality of life. In today's rapidly developing world, choosing high-tech intelligence to a...[Details]
The new generation of ICs requires lower supply voltages. A single device often uses multiple voltages. And these voltages must be applied to the device in the correct timing. These very low voltages...[Details]
On August 27, according to foreign media reports, a spokesperson for Waymo, Alphabet's autonomous driving division, said on Thursday that it has stopped selling laser detection and ranging (optical r...[Details]
When I was looking at the program today, I found that a function used a lot of
#if 1
......
#endif
#if 0
......
#endif
Because I have never used it, I was a little confused. So I searche...[Details]
Function of the circuit The field effect transistor drain saturation current IDSS and pinch-off voltage VP are very different, so it is troublesome to determine the bias. Although the manufacturer...[Details]
The design given in this article uses a single power supply, which can solve the above problems and reduce product costs. At the same time, the design also uses a simple and practical algorithm in an ...[Details]
Microchip introduces new secure storage subsystem and
Key configuration
To ensure high-quality wireless charging power transmitters,
the Wireless Power Conso...[Details]
This article will discuss the power consumption when current is regenerated through the parasitic diode of the output MOSFET when using a brushed DC motor driver IC for PWM drive. The reason for di...[Details]
Successful self-driving cars will inevitably use tightly integrated sensor systems to reach or even exceed human driving capabilities. Human drivers generally use their eyes, ears, and feedback from ...[Details]
The Modbus communication protocol was developed by Modicon in 1979 and is suitable for industrial fieldbus protocol control. The Modbus communication system contains chip nodes and a common transmiss...[Details]
Field data collection is a problem that has long troubled surveyors, cartographers, GIS database managers, engineers and researchers. The problem is simple: how to efficiently and accurately collect ...[Details]
0 Introduction
In the temperature matching of laser frequency doubling crystals, a very high operating temperature is sometimes required. During the crystal heating process, a rapid temperature chan...[Details]
On October 30, the world's highest altitude and largest installed capacity independent grid-connected energy storage power station - the 100MW/400MWh independent grid-connected energy storage proje...[Details]
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