My program has the following code: Call poll() function to wait for the return data of the serial port module
pfd.fd = fd; pfd.events = POLLIN; nLength = poll(pfd, 1, -1); nLength = read(fd, ans, 128)...
[color=#000]I want to ask what is wrong with my program, why it always goes wrong. I want the program to send a set of data every second, receive_Data only has 4 data, but i==6 can send out 5 data "0x...
What is a rectifier diode
Rectifier diode is a semiconductor device that can convert AC power into DC power. Rectifier diodes are widely used in various power rectifier circuits. When we choose a re...
I recently debugged a 3G network card. The driver under wince has been basically completed. The dial-up connection can also be established and it shows "connected" after dialing. However, I cannot ope...
Help: Please call my landline 0550-7764090 within half an hour after my post is published. This is the landline that comes with the fiber optic modem. If I turn off the fiber optic modem, you can't ac...
Abstract:
With the increasing complexity of smart vehicle electrical and electronic architectures, the full lifecycle management of vehicle electronic control components faces multiple challe...[Details]
When we travel in cities, we all find that electric vehicles have many advantages. As a means of transportation, they can also fulfill their mission well. Now, more and more residential communities...[Details]
According to foreign media reports, secondary battery materials company POSCO Future M announced that it has successfully developed two experimental (prototype) positive electrode materials for the...[Details]
This paper proposes a temperature real-time transmission and display solution based on LED optical data transmission, with Jingwei Yager low-power FPGA HR (Yellow River) series as the main controll...[Details]
introduction
According to the China Fire Statistics Yearbook, electrical fires accounted for more than 30% of fire accidents in the past decade, and the trend is increasing year by year. They ...[Details]
A pure sine wave inverter has a good output waveform with very low distortion, and its output waveform is essentially the same as the AC waveform of the mains power grid. In fact, the AC power prov...[Details]
Smartphones can be incredibly unintelligent. For example, consider an office full of people, each absorbed in their work. Suddenly, the silence is broken by a burst of loud pop music. A colleague's...[Details]
With the continuous development of ultrasonic technology, ultrasound has been widely used in fields such as inspection, cleaning, welding, and medical treatment, and has even found its way into tex...[Details]
The practice of warming up a car originated with gasoline-powered vehicles. Warming up the engine allows it to enter a better working state and ensures good lubrication. This has become a habit for...[Details]
According to foreign media reports, German chipmaker Infineon has recently completed the acquisition of Marvell Technology's automotive Ethernet business for a total transaction amount of US$2.5 bi...[Details]
According to foreign media reports, Apple is secretly evaluating several artificial intelligence hardware concepts, including smart home displays, security devices and a desktop robot, of which the...[Details]
It’s a collaborative blueprint designed to address integration complexities and create scalable solutions through Arm’s automotive innovation ecosystem.
The transformation of future mo...[Details]
Siemens software mainly includes PLC, frequency converter, human-machine interface, etc. The current Siemens software can be said to be very stable.
PLC series range from the Siemens S5 series...[Details]
The power battery is a crucial component for vehicles, determining its lifespan and range. According to national regulations, when the capacity of an electric vehicle's power battery drops below 80...[Details]
A transimpedance amplifier (TIA) is a front-end amplifier for optical sensors, such as photodiodes, converting the sensor's output current into a voltage. The concept of a transimpedance amplifier ...[Details]
Programming Basics
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