In fact, we should add OSIntEnter and OSIntExit functions to any interrupt service function. This is because UCOSII is a preemptive kernel. After the interrupt service subroutine runs, the system will...
I have a board using stm8 105c6. I can't remember how many times I've burned it. It should be almost 10k times. Recently, I found I2C read and write errors. I touched the MCU with my finger and it was...
I've been debugging 5545 recently, using an internal reference, and the output is CMOS 2's complement. However, its output clock is sometimes present and sometimes absent, and the voltage meets the re...
I used Cadence Allegro to make a double-sided board. I want to print it online, but I don't know what files I need to produce? Also, what are the test points and mark points on the PCB board? Are they...
I have a 2410 motherboard and an 8900 network card. There were no problems before, but recently it stopped working when I used DNW to download the WinCE image file. I changed to another machine and it...
The long-awaited detailed disassembly of the iFixit iMac Pro is finally here. This time, iFixit got a low-end version of the iMac Pro worth $4,999. Compared with the iMac, the biggest difference betwe...
0. Introduction
In daily life, we often see some special-purpose vehicles. When these vehicles pass through intersections, they often obtain the right of way at intersections by temporarily op...[Details]
In the previous series, we have listed some basic knowledge of C language in Tables 1 to 3. We hope that beginners can strengthen their memory of the above tables and gradually learn to use them wh...[Details]
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
Currently, each country is developing its own USB interface
charging specifications
, which leads to a major problem that a USB interface
charging
device manufactured in one country...[Details]
LED is now known as the fourth generation of light sources. High-power LED has many advantages over traditional light sources in outdoor lighting.
1 LED lamps have high light efficiency
C...[Details]
This article focuses on closing the feedback loop of an isolated power supply using a TL431 shunt regulator. The article discusses a method to extend the bandwidth of the power supply control loop ...[Details]
introduction
The Steyr diesel engine produced by Weifang Diesel Engine Factory has huge power and is one of the main power models widely used in China's heavy machinery and large trucks. In ...[Details]
1. Introduction
AS-Interface bus technology is an intelligent network that uses a single cable to connect sensors and actuators to controllers, transmit data, and provide power. It can be used...[Details]
Fairchild's FAN6208 is a synchronous rectification (SR) controller for isolated LLC or LC resonant converters that can drive two individual SR MOSFETs emulating the behavior of rectifier diodes. FAN62...[Details]
Previously used primarily in high-power power supplies and large industrial and consumer power supplies, supercapacitors are now finding their way into products of all sizes, especially portable de...[Details]
First, the choice of charging location. Wireless charging technology is related to the distance and state of the charger and the charged device. That is to say, the distance between the two cannot...[Details]
Introduction
Zero-IF receivers are not new; they have been in use for some time, with cellular handsets being a key application area. However, their use in high-performance receivers such as...[Details]
3. Driving circuit design
The power driver uses a field effect tube, which is a field-controlled device with a capacitance effect between the gate and source, so it has high requirements for t...[Details]
0 Introduction
The traditional measurement method of measuring gravity acceleration by a simple pendulum in university physics experiments generally uses a mechanical stopwatch for manual timing and...[Details]
Semiconductor devices used in high-end computing (advanced microprocessors) and consumer electronics (graphics and gaming chipsets) devices generally provide data rates up to 6.4Gbps through high-s...[Details]
Real-time operating system RTOS
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