rs232 crossover

Http://blog.chinaaet.com/detail/25424.html Continue to learn the serial communication of ADSP-BF533 today, UART (Universal Asynchronous Receiver ER/transmitter (UART) Port) interface, is a full duplex universal serial interface, composed of RX and TX two lines, the extended RS232 chip can communicate directly with computer serial ports, which is usually used as the command and data communication interface for debugging. As an asynchronous serial comm

Understanding Serial Communications There are many kinds of serial communication protocols, such as rs232,rs485,rs422, even the popular USB is serial communication protocol. And the application of serial communication technology is everywhere. Perhaps everybody sees most is the computer serial port and the modem communication. Remember when the PC was first popular in China (about five years before the 90 's), when someone even used a serial line to

Understanding Serial Communications There are many kinds of serial communication protocols, such as rs232,rs485,rs422, or even the current popular USB is serial Communication protocols. And the application of serial communication technology is everywhere. Maybe everyone sees the computer serial and mode. M's communication. Remember when the PC first began to catch on in China (about five years before the 90 's), when there were even A man uses a seria

different in the reuse mechanism, while other technologies are similar. Therefore, this article takes IP over SDH as an example, the following describes SDH briefly.2.1 SDH network elementsSDH network elements mainly include Synchronous Optical Fiber line system, terminal multiplexing TM), plug-in Multiplexing ADM) and Synchronous Digital crossover equipment DXC ). TM is mainly used to re-connect branch signals to STM signals and complete their photo

http://blog.csdn.net/sdwuyulunbi/article/details/6632382Believe that a lot of people on the microcontroller and computer or chip communication, RXD and txd How to connect more confused. Because in some circuit diagram, there are some direct connection method, there are some cross-linking method, let a person a bit puzzled.The first thing to understand is the two concepts, DTE and DCE. DTE refers to data terminal equipment, the typical DTE is a computer and a microcontroller. DCE refers to the da

data stream (STi ), sent to the handshake line switching matrix. DCE0 to dc4occupy 0th to 3rd time slots in the data frame sequentially, and the rest are idle. The process of receiving data streams is the opposite. A Data Stream (STo) in a fixed frame format is sent from the handshake line Switching Matrix to the CPLD. The first four digits of the 0th to 3rd time slots are extracted from the Syn of the synchronous signal and placed in the corresponding receiving register, then, it corresponds t

CrossOverLinux9: Windows applications are very smooth-Linux general technology-Linux technology and application information. For more information, see the following. Author: Xu Zhenxin, Zhongguancun online Although it is widely believed that applications developed based on Windows platforms are suitable for running on Windows systems, some Linux users insist that, as long as they can do this on Windows, you can do better in Linux. Although there is some truth in this case, it is almost impossib

I. RTS and CTS in the RS232 standardrts,cts------Request Send/clear send, for half-double hours of transceiver switching, belongs to the auxiliary flow control signal. Half-duplex means to say that when the hair is not received, when the collection is not sent. So how do you differentiate between sending and receiving? By default, the DCE sends data to the DTE, and when DTE decides to send data to DCE, the RTS is valid, indicating that the DTE wants t

/rs232, i²c, CAN, Ethernet and other physical layer bearing characteristics, design lack of specific application of pertinence, leading to the emergence of potential problems;3. Lack of tolerance and efficiency considerations.The basic requirement is definitely the basic function of completing the system. However, because the definition of requirements is incomplete, the system Designer is not forward-looking; there is no version number defined in the

Genetic algorithm is a kind of heuristic search, which belongs to evolutionary algorithm. It was originally designed according to Nature's natural choice of species and genetic laws. It simulates the natural selection, heredity and mutation of nature species, and improves the genes of a population.The genetic algorithm needs to set parameters such as crossover probability, mutation probability and iteration number, and the convergence of the algorithm

How to interconnect single-chip serial communication rxd with txd Category:8051 2012-04-0711: 35 Read by 348 Comment (0) Favorites Report Reprinted from: http://blog.csdn.net/sdwuyulunbi/article/details/6632382 I believe many people are confused about how to connect rxd and txd when the microcontroller communicates with a computer or chip. In some circuit diagrams, some are the direct connection method and some are the cross connection method, which makes people

= new SerialPort (); By default, the value of databits is 8, stopbits is 1, and the communication port is com1. You can reset these settings in the following attributes. : Baudrate: the baud rate of the serial portStopbits: the number of Stop bits per byteReadtimeout: The stop time when the read operation is not completed. Unit: milliseconds There are also many other public attributes. You can refer to msdn on your own. Serial Port hardware knowledge During data transmission, each byte of data

development library and compiler using Redhat Linux 9.0 operating system environment. Create a new directory and write the hello.c file in it. Learn the programming and compilation process under Linux, as well as the use of the arm Development Board and settings for the development environment. Download the compiled file to run on the target Development Board.Second, the experimental stepsStart the experimental platform1. Hardware connection: Connecting the power supply, connect the 12v power c

First you need to know what is RS232 and RS485. Typical serial communication standards are RS232 and RS485. They define voltages, impedances, and so on. But no definition of software agreement Distinguished from RS232, RS485 features include: 1. Electrical characteristics of RS-485: Logic "1" is expressed as a voltage difference between two lines + (2-6) v, and t

voice detection zones, game-to-war zones, and video-on-demand zones, it also provides the Port VLAN function to easily create temporary virtual LAN groups for netshers in different locations. You can save and restore vro configuration files to facilitate vro management. You can also perform remote management and upgrade over the Internet.Alpha R-IX104 Internet cafe Broadband Router embedded hardware firewall, to prevent DDOS/DOS attacks, support IP address filtering, domain name filtering, MAC

-pin serial port, both of which are 2 and 3;· Two different serial ports (whether the two serial ports of the same computer or the serial ports of different computers)The above table is for the standard serial port of the microcomputer, and there are many non-standard devices, such as receiving GPS data or electronic compass data, as long as you remember one principle: receiving data pins (or wires) it is connected to the data transmission pins (or wires), c