Suppose there is a uclinux operating system on the xscale platform, and the futex system call is executed in this operating system. Pseudocode of futex system call: Futex(…) { if(wait operation is to ...
I was lucky enough to win the first prize in the BBB board DIY activity, link: [url=https://bbs.eeworld.com.cn/thread-443145-1-1.html]https://bbs.eeworld.com.cn/thread-443145-1-1.html[/url] [url=https...
Recently, the project department has taken on a new project that requires the performance indicators of the IC to meet industrial-grade requirements. Does anyone have any recommendations?...
Everyone, at91sam9261 official bsp~ nand partition: static MapSectionList K9F1208U0A_Offset32MB = { 2, { { 0, 4096-2048, 2048, BLOCK_RESERVED}, // The first 2k blocks map to the end of flash ( 2048 * ...
Has anyone worked with PCIE? I'm having a problem now. After burning the PCIE 2.0 ×1 program, the device cannot be found, but ×4 and ×8 can, and data transmission is also possible. Does anyone know ho...
We are currently making a set of outdoor smart locks, which are anti-theft and have no obvious prying points. This means that it is a fully enclosed shell, which is also installed on a metal cabinet. ...
Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
Hardware designers have begun to adopt FPGA technology in high-performance DSP designs because it can provide 10-100 times faster computing than PC-based or microcontroller-based solutions. Previou...[Details]
A single-chip microcomputer is also called a single-chip microcontroller. It is not a chip that completes a certain logical function, but a computer system integrated into one chip. In general, a c...[Details]
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]
1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
Product series: PB-B-RS232/485 interface (hereinafter sometimes referred to as "interface") is a product in the PROFIBUS bus bridge series.
The main purpose of the bridge series ...[Details]
Among the many members of the single-chip microcomputer family, the MCS-51 series of single-chip microcomputers has occupied the main market of industrial measurement and control and automation eng...[Details]
From the previous section, we have learned that the timer/counter in the microcontroller can have multiple uses, so how can I make them work for the purpose I need? This requires setting the timer/...[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]
1. Disadvantages of choosing too high a voltage level
Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]