[size=4]I have made an MP3 player based on cortex-a8 before, and now I am studying the implementation of cortex-a8 and linux audio driver with my classmates. The two topics are very similar. The forme...
In recent years, the employment of Chinese college graduates has always been a prominent problem. Some people joke that college graduates are unemployed. Millions of students graduate from schools eve...
Now more and more people like to use Android phones. Zhuoyue Education found that the Android system not only leads the market share in the United States, but also has a great advantage in traffic. Ac...
The target board I use is SEED DEC6713. I want to use MCASP+EDMA to transmit and receive audio data. However, when initializing MCASP, there is a sentence: while(MCASP_FGETH(hMcASP,XSTAT,XDATA));. Whe...
Since the second half of 2020, the chip supply has been tight; insufficient manufacturing capacity, insufficient packaging and testing capacity, insufficient inventory; car companies, mobile phone man...
I set it as follows:/* Configure the NVIC Preemption Priority Bits */NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);// Enable the TIM2 global InterruptNVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQChan...
With the rapid development of science and technology, especially the widespread application of digital technology and various ultra-large-scale integrated circuits, electronic equipment, especially...[Details]
In recent years, the market for mobile/portable devices such as smartphones and laptops has continued to grow rapidly. While these products continue to integrate more new features to enhance the ...[Details]
System design is a complex process. It is not enough to just use ICs. There are many details to consider. This article uses a high-fidelity music playback system as an example to introduce how to s...[Details]
1. Introduction
Light control circuit plays a vital role in urban street lamps or corridor lighting. With light control circuit, the lights can be automatically turned on and off according to ...[Details]
Images in science fiction movies often break through the limits of reality, such as in the movie "Minority Report." Tom Cruise uses a multi-touch screen to browse information. Capacitive sensing te...[Details]
Xiaomi, a well-known Internet phone in mainland China, won a million-unit order contract from China Unicom on November 20 last year, which made Xiaomi famous in mainland China. In April this year...[Details]
12v Lead Acid batteries used in trucks, cars, RVs and uninterruptible power supplies are usually rated at 12V. This circuit monitors the battery, the charge and discharge curves, gives the cu...[Details]
introduction
MAX6636 is a multi-channel precision temperature monitor that can not only monitor local temperature, but also connect up to 6 diodes externally. Each channel has a programmable...[Details]
Capacitors
are basic components in various electronic devices and are widely used for bypassing, coupling,
filtering
, tuning, etc. in electronic circuits. However, to use capacitors,...[Details]
In the "digital pressure measurement" experimental device of applied physics, the subject technical knowledge of analog circuits, digital circuits, sensors and single-chip microcomputers is used. In o...[Details]
introduction
Steam turbines are driven by high-temperature and high-pressure steam generated by boilers to run at high speed. They are key power equipment in thermal power plants. The emergenc...[Details]
As the global LED market demand continues to increase, my country's LED industry will face huge opportunities in the future. However, the core LED technology and patents are basically monopolized b...[Details]
This article discusses the six design steps of LED lighting system design in detail: (1) determine the lighting requirements; (2) determine the design goals and estimate the optics; (3) the efficie...[Details]
People who often surf the Internet until late at night, their families always complain that turning on the big lights in the living room affects their rest, but some people don't have keyboard ligh...[Details]
Leakage current is generated by parasitic resistance paths between the measurement circuit and a nearby voltage source. This current can significantly reduce the accuracy of low current measurement...[Details]