MAX232手册 MAX232手册

此例为单片机串口的应用!将串口外接一个串入并出的数字芯片,可实现在单片机的串口扩展成并口输出功能!-This case the application for the single-chip serial! Will add a string to the serial port and a digital chip can be realized in the single-chip serial port expansion into a parallel port output function!

一个通讯的主站程序 献给vc 串口通信的网友 看看吧-a communications major stations dedicated to the vc serial communication netizens watch it

C语言通讯程序库DOS版,支持10个115200波特率的通讯口-C language library DOS version of the communication process to support 115200 baud rate of 10 communications port

基于RS－232的，对多路转换开关的控制程序，希望对大家有用！^_^-based on RS-232, for multi-channel switch control procedures in the hope that it may be useful right! ^ _ ^

common communication

一个读取支持modbus协议的设备的数据工具-read a support agreement modbus connection equipment for the data tools

从串口读取数据，有两种方法，1、每接收一个EV_RXCHAR,就用ReadFile读一次，这样我觉得太恐怖了。2、接收到一个EV_RXCHAR后，等一定数据量的CPU周期(GetTickCount),再一次性读取缓冲区里的数据。这样做，一般情况下不会有问题，但是，如果数据很多，过了“一定数据量的CPU周期”，还没收完数据怎么办？就会少读数据了。 我用三个线程序来完成串口数据的接收，其实就是第一种方法的变种： 一个侦听EV_RXCHAR,一个对EV_RXCHAR进行分析，其实就是超时判断。如果接收到一个消息后，一段时间没收到下一个EV_RXCHAR，就认为是一个数据包的结束。这个线程就会通知数据接收线程，进行数据接收。一般同一包数据，两个字符之间的时间间隔，应该很小了吧，而两个数据包之间的间隔，应该不会太小吧！（这个地方我不清楚，猜的:( :) ）最后一个线程，是接收数据的。-read data from the serial port, there are two methods, one, each receiving a EV_RXCHAR, on the ReadFile read, I think this vote. 2, received a EV_RXCHAR after a certain volume of data, such as CPU cycles (GetTickCount), and the one-time reader, the data buffer. To do so, under normal circumstances there is no problem, but if many of the data, and after a "certain amount of data the CPU cycles," also confiscated End Data how do? Few will read the data. I used three lines to complete serial data reception, the first method is a variant : an interception EV_RXCHAR, one pair of EV_RXCHAR analys

一个很好的串口通信程序，给不熟悉的朋友借鉴使用-Serial communication program, to learn from friends are not familiar with the use of

1、本实验箱采用的液晶显示屏内置控制器为SED1520，点阵为122x32，由两片SED1520组成，由E1、E2分别选通，控制显示屏的左右两半屏。-1, the experimental use of the boxes built-in LCD controller for SED1520, to 122x32 dot matrix, composed of two SED1520, E1, E2 respectively strobe control screens around two semi-screen.

串行通讯的例子，写的很简单-serial communication example, writing is very simple