I will record the process of implementing the USB virtual serial port on the Zhengdian Atom F429 Apollo development board, hoping to help others who want to learn USB.First, I updated the source code ...
1 About Fourier TransformThe Fourier transform is such a magical transform, its basic principles and applications are everywhere in textbooks and on the Internet, so I will not go into details here to...
The negative feedback amplifier circuit can be divided into voltage feedback and current feedback from the sampling method of the output end, and can be divided into series feedback and parallel feedb...
With the development of 3G technology, the processor speed is required to be higher and smaller, and the development of DSP can just meet this development requirement. Because other traditional proces...
In traditional voltage-type control, there is only one loop, and the dynamic performance is poor. When the input voltage is disturbed, the duty cycle changes slowly through the voltage loop feedbac...[Details]
On September 6, the Ministry of Industry and Information Technology held the fifth press conference in the series of "Industrial and Information Technology Development in the New Era" with the them...[Details]
Recently, Texas Instruments (TI) announced the launch of the second device in the PurePath Wireless audio product series, bringing the latest applications to consumer, portable and high-end audio....[Details]
2-1-1-15. Effective magnetic permeability of switching transformer
As pointed out above, the magnetic permeability used to represent the properties of the medium is not a constant, but a n...[Details]
g_ak4961_i2s_tx_handle.Instance- SR __IO uint32_t SR; /*! SPI status register,Address offset: 0x08 */ 27.5.3 SPI status register (SPI_SR) CRCERR 8: FRE bit 8 FRE: Frame format error Note: When SPI ...[Details]
Yesterday, Apple pushed the iOS/iPadOS 15.2 Developer Preview Beta 3 update to iPhone and iPad users. According to 9to5Mac, in iOS 15.2 Beta 3, users can search for specific songs in playlists for...[Details]
On May 7, AnTuTu, a well-known domestic mobile phone benchmarking software, released the Android mobile phone performance rankings for April. The specific situation is shown in the figure: ...[Details]
Flame-retardant cable is a commonly used cable product. After a fire occurs, it can limit the burning to a local area, prevent it from spreading, and protect other equipment to avoid greater losses. T...[Details]
The function of the watchdog: The watchdog timer is a counter whose basic function is to restart the system after a software problem or program runaway occurs. The watchdog counter counts automaticall...[Details]
Jiwei.com reported on December 18 that last night ZTE's official Weibo account released a statement saying that recently some criminals have used ZTE's name to commit fraud, and ZTE has reported the ...[Details]
1. What is cross-compilation? Run the compiler on the development host to compile the kernel and application. The kernel and program run on the target machine. This compilation process is called cros...[Details]
The float level meter is an instrument that uses the principle of magnetic coupling to detect the liquid level. As a continuous measurement instrument, it has the advantages of simple structure and...[Details]
Image recognition by machine vision is to use robots to analyze and process images to achieve different goals. Most of the research on industrial quality issues requires one-on-one analysis, so her...[Details]
I often see netizens in the forum saying that if the library files are included, then we don’t need to write the device drivers ourselves? (For example, LCD, delay function, SPI, UART, E2PROM, etc.). ...[Details]
Everyday traffic jams pose a safety risk to vulnerable road users. According to foreign media reports, Volvo Trucks has launched two safety systems that focus on protecting pedestrians and cyclists...[Details]