串口编程

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

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.

getmywish使用的usb注意：由于用到多串口控制，需要在收到数据时确定是哪个串口来的数据。 下面是串口事件处理函数代码： -getmywish use usb Note : As used Multiport Serial control, the receipt of necessary data to determine which of the serial data. Below are the serial code incident handling functions :

使用C++实现将Modbus协议封装在DLL中的源代码-C++ realization of the use of Modbus protocol will be packaged in a DLL in the source code

ABB AIN电表读多类数据通讯测试程序，包括数据类9、11、14、15等。-ABB AIN meter reading more categories of data communications test procedures, including data types, such as 9,11,14,15.

用visual c++ 6 编写的串口通信程序,适合初学者学习-Using visual c++ 6 prepared by the serial communication program, suitable for beginners to learn

实现串口手机短信发送程序很全面的源代码-Serial SMS program is a comprehensive source code

使用RS232串口2，通过Copley电机控制卡控制电机运转的VC程序。并且程序开发手册也包含在文件夹内。 Using RS232 2 port, a VC program is developed for Copley motor control card, by which motors can move precisely. And a handbook for program development is inclued in the rar file.-The use of RS232 serial port 2, through Copley cards to control motor control motor functioning VC procedures. And program development manual is also included in the folder. Using RS232 2 port, a VC program is developed for Copley motor control card, by which motors can move precisely. And a handbook for program development is inclued in the rar file.

16550串口代码-serial code 16550

一个VB语言编写的，用计算机COM口进行数据传输的程序。-a VB language, computer COM port for data transfer procedures.