When writing Linux drivers, where can I find the prototypes or usage instructions of these API functions? For example, the function register_chrdev_region for registering device numbers cannot be foun...
From "brick" mobile phones to bulky TVs, power modules once occupied a considerable space in electronic and electrical products, and the market demand for higher power density continues to increase.
I...
[size=4]When making high-frequency power supplies, sampling of high-frequency AC signals is often involved. The traditional sampling circuit is as follows: [/size] [size=4] [/size] [align=center][size...
In the last issue, we have eliminated A. In this issue, we need to display the letters AB at the same time, which requires two lvgl tags. How to do it? I thought of the structure:
struct Obj{char name...
Phase-locked loop introduction
A phase locked loop (PLL) is a negative feedback control system that uses a voltage generated by phase synchronization to tune a voltage controlled oscillator to...[Details]
Samsung's Galaxy series of mobile phones have been launched for many years. This series of mobile phones has made outstanding contributions to the development of the mobile phone industry. Recently, ...[Details]
Whether the public has noticed or not, cities and businesses have been moving away from using facial recognition technology, but federal agencies are moving more aggressively toward it. ...[Details]
1. Introduction
In order to estimate the imbalance caused by the changing parameters of parallel IGBT modules, a worst-case analysis is usually performed based on a combination of uppe...[Details]
introduction
The next generation of rear-seat entertainment systems must cover a wider range of data sources than the car's in-vehicle entertainment and audio-visual systems, provide stronger ...[Details]
This article explains how to select an oscilloscope probe to capture high-speed signals: Oscilloscope probe input impedance Probe transmission response Oscilloscope Probe Accessories Oscilloscope...[Details]
Grid-connected inverter Grid-connected inverters are generally divided into photovoltaic grid-connected inverters , wind power grid-connected inverters, power equipment grid-connected inverters and ...[Details]
Design engineers usually use the FIFO provided by the chip provider when implementing FIFO (first-in, first-out register) on the FPGA. However, due to its versatility, it becomes less specific and may...[Details]
For personal safety, the machine must be powered off and the inverter input power lines R, S, T and output lines U, V, W must be removed before operation! First, set the multimeter to the "diode" p...[Details]
Lighting is not only a lighting tool in the home, but also gradually becomes a decoration in people's lives. Unique and creative lighting can also add a lot of fun to our home life. With the developm...[Details]
In the process of developing embedded systems, serial bus protocol analysis has always been a headache for engineers. In the case of a logic analyzer, engineers need to set complex trigger condition...[Details]
STM32 supports reading and writing its own Flash (code area). Therefore, in some situations where power-off preservation is required, we can use this feature to save an external Flash or EEPROM...[Details]
DigiLens, a Sunnyvale, California-based startup developing augmented reality (AR) displays, announced today that it has closed an oversubscribed $50 million Series C round of funding from investors ...[Details]
What is the trigger hold time of an oscilloscope? There must be a time interval between the oscilloscope being triggered and the reconnection of the trigger circuit. The trigger suppression time is t...[Details]
Chen Mingji, this person needs to be known, because he wrote the small rtos, which was written based on the principle of ucos. This small rtos can run on the 51 microcontroller, but it is limite...[Details]
Linux and Android
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