We have specially compiled the opinions of engineers with many years of experience in embedded programming, and summarized them into a note that can be instructive for embedded programming experience....
1. What is overshoot?
When a faster signal drives a longer trace and there is no effective matching in the trace topology, overshoot often occurs. The main problem caused by overshoot is that the "1...
What is the difference between using * and ? in the day of the week in a cron expression? I checked some information, but none of them are clear. For example, one of the information saysCron expressio...
Magnetic units and basic laws of electromagnetism
In order to measure magnetic fields in engineering, the following physical quantities are specified. Due to historical reasons, there are tw...[Details]
I made a simple running light in my spare time. The design idea is to display the LED lights from 0 to 7 one by one, and then from 7 to 0 one by one. If an external interrupt occurs (i.e. a button is...[Details]
The stlink v2 I have is bought from Zhengdian Atom together with the development board. This is made by them, not exactly the same as the official one. It cannot recognize the STM32L4 series chips in...[Details]
The 2022 China (Yizhuang) Intelligent Connected Vehicle Technology Week and the 9th International Intelligent Connected Vehicle Technology Annual Conference (CICV 2022) Intelligent Connected Vehicle ...[Details]
A problem I solved some time ago seemed like a small problem, but it actually took me a week's worth of rest time at night to solve it. I'd like to record and share it. Problem Description: In the ...[Details]
1. Introduction to FLASH of STM32F103 1. As shown in the figure, the internal FLASH storage area of STM32F103 is divided into three areas: the main storage area, the information block and the fla...[Details]
Overview: The EEPROM chip model is 24C02. The total capacity of the chip is 256 bytes. The chip is connected to the outside through the IIC bus. Experimental function: Use the KEY1 button to contro...[Details]
Network cards and network devices are generally equipped with LED indicators, and the activity of the indicator light also represents the working status of the network device. Therefore, you can gene...[Details]
1. Problem description: Use STM32CubeMX, configure SDIO 4-bit mode, and perform read and write tests on the SD card. 2. Preparation: Software version: STM32CubeMX–4.22.0; KEIL5 Hardware platform: At...[Details]
S7-200Smart PLC Instruction Entry Application
Normally open and normally closed coil instruction principle explanation
The relationship between bit logic instruction symbols and relay cir...[Details]
In recent years, the demand for electric vehicle technology has grown exponentially. However, many users also want SUVs, crossovers and light trucks to have four-wheel drive (4WD) and all-wheel drive...[Details]
As the power system's requirements for power quality continue to increase, the reactive power and its compensation issues that affect the voltage stability of the power system have received increas...[Details]
On April 7, LuoShi announced that it had recently successfully completed a strategic + round of financing of over 500 million yuan. This news has attracted widespread attention in the robotic...[Details]
This week, there were some "outrageous comments" in the automotive industry again.
On October 24, Beijing time, Luo Jian, general manager of the marketing department of CATL, said at a p...[Details]
Microcontroller MCU
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