I modified mainstoneiii by myself, and encountered a very strange problem. When eboot downloaded nk.bin to RAM, it could sometimes be downloaded, but most of the time tftp always timed out. The inform...
I'm working on a stepper motor recently and want to use a single-chip microcomputer to control it. However, the stepper motor is relatively large and the drive current is over 2A. Could any experts pl...
For AM335x, the USB driver maintained by TI is already very complete. This article calls it porting, but in fact it is just configuring the kernel options to enable the USB HOST/OTG function. Without ...
Masters, I am using kell4. There are multiple .C files in a project. Because another global variable is defined, I have to delete this variable. Can you tell me if there is a quick way to delete it? ?...
I am a beginner at 12864. I want to display custom Chinese characters, that is, regular script, on 12864. I will extract the code from the font software and display it. Below is part of my program for...
1. Principle 1. Infrared emission protocol There are many infrared communication protocols. This experiment uses the NEC protocol. This protocol uses PWM modulation and uses pulse width to represen...[Details]
Today, under the guidance of a low-level expert, I learned how to configure the PWM module! Woof! First open the file configured last time, as follows: Then, we need to use TIM1 to set PWM: Then,...[Details]
As many companies listed with
the concept of
touch screen
begin to "transform and upgrade", the official voice of the TP industry is getting smaller and smaller. At the same time, the list o...[Details]
Superconductors have physical properties such as zero resistance effect, Meissner effect and Josephson effect, which make them have broad application prospects and unparalleled advantages in many b...[Details]
In recent years, in order to meet the needs of social development, more and more companies have entered the fields of smart phones, artificial intelligence,
VR
, AR, etc. After seeing the d...[Details]
STM32 has 2 watchdogs: independent watchdog and window watchdog. Independent watchdog IWDG: A system fault detector that is independent of the system and is not affected by the system because it has ...[Details]
The calculation formula of the watchdog feeding time (watchdog overflow time) is: Tout=((4*2^prer)*rlr)/40 Tout is the watchdog overflow time (in ms), prer is the watchdog clock prescaler value (...[Details]
For complex calculations, the speed of the microcontroller is too slow. The best way is to manually calculate all the results in advance, store them in ROM in sequence, and then directly check the re...[Details]
Recently, the National Development and Reform Commission announced that all foreign equity restrictions in the automobile industry will be lifted in the next five years. At the same time, as subsid...[Details]
Take serial port interrupt as an example: like: void serial() interrupt 4 { } and void serial_uart() interrupt 4 { } The functions of both functions are to define the serial port interrupt function. ...[Details]
Everbright Securities released a research report on Sungrow Power Supply on January 24. The report summary is as follows:
Company Profile
The company is a leading enterprise in photovolta...[Details]
In principle, a 32.768K external crystal oscillator is used to generate an asynchronous clock signal as the clock source of M8 timer 2. By setting a pre-division of 1024, the precise time of TCNT2 ov...[Details]
Because the 12232F display is commonly used, but what we usually see are some parallel port assembly programs, and there is no parallel port program corresponding to 12232F, and the serial port C51 p...[Details]
Embedded System
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