stm32f4 chip

Today in the group there is a Netizen mentioned 51 single-chip computer using printf why the compilation passed, but no effect. Here to share my notes, the experiment itself does not make much sense, mainly to record 51 how the single-chip microcomputer should use the printf function.Experiment Name: Serial communication single chip microcomputer and PC calculati

MT8389 is a stranger to everyone, but if I say MT6589, I guess everyone understands it. In fact, MT8389 is a branch of MT6589, and a clone branch makes it clearer, is MT6589 high-consumption version. It can also be seen as the same CPU. I think it is necessary to popularize the basic knowledge of MTK CPU before explaining MT8389, because the CPU development of MTK has a great continuity, for example, the smartphone chip contains the function mobile ph

In wireless communication, the nrf24l01 wireless transceiver module produced by Nordic is the choice of many players. It is GHz ~ The single-chip wireless transceiver chip in the GHz ISM band has the advantages of strong functions, convenient control, and low price. One piece of nrf24l01 can receive data sent from six channels at the same time, and change the communication channel to avoid wireless communic

Industrial and Commercial Bank magnetic stripe card Change chip card how much is the charge? You can come to know about the trade and industry magnetic stripe card for IC card fees. If you have the use of industrial and Commercial Bank magnetic stripe card, please be sure to change to chip card Oh ~ below to see how to charge it. ICBC Magnetic stripe card Exchange

Linux AT90S8515 Single-Chip GCC programming lighting experiment documentary-Linux general technology-Linux programming and kernel information, the following is a detailed reading. Watching the Light Emitting Diode flash, I'm so happy. Success! For a newbie, this is the first time that we will never forget. ...... I have heard of avr in the csdn forum and downloaded programming and other things. When I searched for related information online, I found a

Differences between single-chip I/O port push-pull output and open-drain output) Push-pull output: outputs high and low levels and connects to digital devices; Open-drain output: the output end is equivalent to the collector of the transistor. To obtain a high-level state, the output end must be able to pull up the resistor. It is suitable for current-type drive and has a strong ability to absorb the current (generally less than 20 mA ).The push-pul

Previously just learned single-chip computer, after a set of programming, can achieve a lot of different functions, at that time, it is felt that single-chip microcomputer is really powerful. Later came into contact with DSP, found that DSP processing digital in communication, more convenient. So I was curious to ask myself, DSP and microcontroller, what is the differenceSee a forum on the DSP and the diffe

The single chip microcomputer multi-byte serial port receive (high-order research of serial port multi-byte receive send)Original address: Http://bbs.ednchina.com/BLOG_ARTICLE_3007162.HTMWork for more than a year, wrote a lot of single-chip computer serial program. The sense of the serial port multi-byte receive part of the logic relative to the configuration register with the serial port reply, is a bit di

Single-chip microcomputer tutorial 4. C Language Foundation and realization of running lightsC language, people who have not touched the computer programming language will see it very mysterious, it feels very difficult, and in my opinion, C language logic and operations, is the primary level, so we do not fear it, I as far as possible from the primary mathematical logic way with everyone to learn C language. 1.1 binary, decimal, and hexadecimalSeemin

What is a U disk's main control chip? use a U disk to mass production are aware that the first step is to test the U disk's main control chip is what, and then according to the corresponding tool for mass production. The net summarizes, the user uses most the main control chip is the group union Phison and the Skymedi. Now let's take a look at their pros and cons

Recently, I made a joke and continued to play the learning AVR (mage8) microcontroller. I am still so familiar with it. However, this time it was a little difficult, and it was not suitable for the first time. The program cannot be downloaded !!!! Of course, the biggest reason is the download tool. If you are not using the usb isp download tool, it may be different from mine. Of course, it is not here to blame those who developed usb isp. I admire them faithfully, their technology and their open

Single Chip Microcomputer, at first I still don't know what this thing is doing. until the winter vacation of the year before, I bought a 51 board and started my single chip microcomputer career. At the beginning, I still don't know how this thing and the program are integrated. Is it so easy to write a few lines of programs to control the single chip microcomput

Principle and Application of Si4133 integrated with Phase-Locked Loop Chip [Date: 2008-9-3] Source: China Power Grid Author: Liu huaping, Guo Wei [Font:Large Medium Small] 　 Introduction Frequency synthesis technology is the main signal source of modern RF microwave systems. Currently, digital frequency synthesizer is widely used, which is generally composed of crystal oscillator, divider, phase detector, filter and VCO (voltage c

Ram is the data space used to store random variables in the program running. The default internal RAM of 51 single-chip microcomputer is only 128 bytes, and the number of 52 single-chip microcomputer is increased to 256 bytes, and the number of 52 single-chip microcomputer is increased to 512 bytes, for programmers, the more ram a

Http://hi.baidu.com/52_diy/blog/item/d8310dfac0a97716a8d3114b.html POV is persistancd of vision. It uses a single-chip microcomputer to control the flow lamp, and uses the movement of the flow lamp and the temporary effect of human vision to generate various graphics or texts. The effect is as follows: This figure shows how it works. The principle is relatively simple, it is easy to implement with a single-chi