前提是我拿别人的交叉编译工具.
root@localhost u-boot-1.1.6]# export PATH=/ning/2.95.3/bin:$PATH[root@localhost u-boot-1.1.6]# make B2_configConfiguring for B2 board...[root@localhost u-boot-1.1.6]# makefor dir in to...
An experience, a lesson. Let's take a look. I have been debugging AVR microcontroller circuit boards these days and found a strange phenomenon: the matrix keyboards on more than half of the boards can...
I use pwm to read the sine wave table, but the output is just the duty cycle changing, not the sine wave. Is there something missing? Can an expert give me some advice? Thanks!...
[align=left][color=rgb(0, 0, 0)][backcolor=rgb(255, 255, 255)][font=微软雅黑][size=14px][size=4]As the title says, cortex-A8 platform, kernel version: linux 2.6.37[/size][/size][/font][/backcolor][/color]...
Share it with everyone:[if gte mso 9]>Normal07.8 磅02falsefalsefalseMicrosoftInternetExplorer4Before talking about accuracy, we must first talk about resolution. Recently, there have been hot posts dis...
Which type of pressure sensor should I choose? The weighing range I want is 0 to 2000 grams or 3000 grams. I hope you can give me some advice! I hope it is a voltage output type sensor so that I can d...
introduction
With the continuous optimization of surface mount technology (SMT) and the rapid development of chip component manufacturing technology, the application of chip mounters in the el...[Details]
1. Introduction
Automobile pollution is one of the most important issues that people are most concerned about and need to solve urgently. As an important method for detecting automobile exhau...[Details]
Analog engineers have traditionally struggled with complexity when designing power supplies that required multiple outputs, dynamic load sharing, hot-swap, or extensive fault-handling capabilities....[Details]
The reason for the light decay of white LEDs: the decline of phosphor performance
So far, the rapid decline of the luminous performance of white light LEDs, especially low-power white light LE...[Details]
The data collector of the automatic weather station is generally designed based on a single-chip microcomputer or a PC/104 bus controller. It has the characteristics of good compatibility with PC, low...[Details]
1 Introduction
PROFIBUS is an international, open, and manufacturer-independent fieldbus standard. It is widely used in manufacturing automation, process industry automation, and automatio...[Details]
0 Introduction
Under normal circumstances, the three-phase power in the power system is symmetrical, and they meet certain amplitude and phase conditions; but when the load changes, the syst...[Details]
The above is to use MB1404 as a stereo composite signal transmitter. You can use the internal high-frequency amplifier and oscillator or not! According to my experience, I still recommend beginners...[Details]
1 Introduction to LED
With the development of science and technology, people have higher and higher requirements on automobile light sources. LED (Light Emitting Diode) has gradually attracted...[Details]
Cars equipped with xenon headlights are already common on the road. Whether they are standard equipment on high-end cars or embellishments on modified cars, xenon lamps are gradually becoming a sym...[Details]
1. Tips for charging UPS for the first time
After purchasing a new UPS, plug the UPS into the 220V mains power grid and charge it for at least 12 hours to ensure that the battery is fully char...[Details]
The power consumption of a switching power supply includes fixed losses caused by parasitic resistances such as semiconductor switches, magnetic components, and wiring, as well as switching losses ...[Details]
In recent years, with the increasing maturity of LED technology, LED light sources have been increasingly widely used due to their advantages of using low-voltage power supply, low energy consumpti...[Details]
1. Project Introduction
Beijing Benz-Daimler Chrysler Co., Ltd. is a joint venture between Beijing BAIC Group and Benz-Daimler Chrysler. In October 2005, it started to build a new automobile ...[Details]
Traditionally, when using PLC to control stepper motors, a dedicated stepper motor control intelligent module is usually added to the PLC, and then connected to the drive power supply to realize th...[Details]
Embedded System
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