In the previous issue, we eliminated letters. This time, we added a fraction lvgl control based on this.
So we need a variable to record the score:
int score=0;//分数初始为0
There is also a label tag:
lv_o...
[align=left][color=rgb(51, 51, 51)][font=-apple-system-font, BlinkMacSystemFont, "][size=17px]In the design of PCB boards, as the frequency increases rapidly, many interferences will appear that are d...
This content is originally created by EEWORLD forum user Qi IC Kan MCU . If you want to reprint or use it for commercial purposes, you must obtain the author's consent and indicate the sourceTimer, as...
With the advent of the information age, power management technology is becoming increasingly important in the 21st century. Whether it is the most advanced personal computers, portable wireless commun...
[;)][:O][:D] I really admire Li Bai, who knew how to curse the Japanese in the Tang Dynasty (see the first and last words of each sentence) At dusk, the blue mountains are small, and there is no sunse...
Test products: Car audio and video monitoring board and 24V power board
Leimao laboratory temperature and humidity: 26 degrees, 61%
Test standards: static electricity, surge, load d...[Details]
According to foreign media reports, the global chip shortage that began in the automotive sector at the beginning of this year has affected many manufacturers such as Ford and Hyundai Motor, and is s...[Details]
1 System Structure
This design cleverly uses the power correction circuit of the Boost structure of the high power factor PWM control chip L4981A to realize the design of the DC boost converter...[Details]
The I2C (Inter-Integrated Circuit) bus is a two-wire serial bus developed by PHILIPS and is used to connect microcontrollers and their peripheral devices. It is a bus standard widely used in the fiel...[Details]
Digital and custom design platforms, coupled with high-quality IP, reduce risk and accelerate customer adoption of new process nodes for HPC, AI, 5G and other advanced SoCs
Key poi...[Details]
This paper introduces a CAN bus distributed measurement and control system based on the single-chip microcomputer AT89C52. It mainly describes the overall design of the system, as well as the softw...[Details]
Many people are familiar with the STM32F7 series , the first high-performance microcontroller based on the ARM®Cortex®-M7 core in the microprocessor industry . For example, the STM32F7 series ...[Details]
Hefei Qingyi Optoelectronics' high-precision mask project has basically completed installation and debugging and entered the trial production stage. It is expected to be officially put into productio...[Details]
There is no unified regulation on the installation requirements of combustible gas detectors. During the operation of the combustible gas detector, the combustible gas detector may not detect or...[Details]
The kernel source directory currently used /home/S3-ARM/Part-4-CoreAndDriver/UP/subject3/lesson3/new/linux-mini2440/ Kernel source code compilation command make uImage ARCH=arm CROSS_COMPILE=arm-...[Details]
introduction
The new generation of display devices, organic electroluminescent display devices OLED (Organic Light Emitting Diode), are 1/3 of LCD in thickness, 1,000 times faster than...[Details]
In recent years, more and more intelligent configurations have appeared in cars on the market, and some consumers' car purchasing demands are no longer simply satisfied with space and fuel consumpti...[Details]
Google's Android is used as the software development platform for the vehicle virtual instrument human-machine interface. The human-machine interface of the virtual instrument is realized on the An...[Details]
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