输入VB欧姆龙PLC控制

uart实验源码!希望你可以给你们带来帮助!谢谢可以跟大家分享!-UART experimental source! I hope you can help to you! Thank you can share with you!

汇编写的串口通讯程序,可传送64kb大小之内的文件-compilation write serial communication procedures, transmission within 64 kb size of the paper

用VHDL编写的quartusii平台上的串行EEPROM配置读取的程序。-Quartusii prepared using VHDL platform to read the serial EEPROM configuration procedures.

这是我做的关于考勤机的一些测试程序，请大家积极下载，很有帮助。-This is my appraisal done on the plane of some testing procedures, please download positive and helpful.

机器人控制的串口通信调试程序,包含角度，速度控制。- Serial Communication for Robot controlling

使用VC.NET编写串口通信程序，是很好的串口调试软件-Use VC.NET write serial communication program is a very good serial debugging software

一些485通讯芯片的资料。做工控的人一定会用得到。-Some 485 communications chip information. Done IPC person will certainly used receive.

在VC++6.0中用MSComm控件编程，可以实现串口接收数据和发送数据，数据分别显示在接收框和发送框中。 -used in VC 6.0 MSComm programming, can achieve serial receiving data and sending data Data were displayed at the receiving box and this box.

因为手机短消息的发送是以PDU串的形式发送出去的，中文字符以Unicode码来表示，所以在发送中文短消息之前必须首先将中文字符转换为Unicode码，下面的函数将实现这个功能。这个函数主要应用到VB自带的一个格式转换函数：AscW（）将中文转换为Unicode码-because phone short message is sent in the form of Series PDU sent, Chinese characters in Unicode code to indicate, Therefore, the Chinese short message sent before the Chinese must first be converted to Unicode character codes, the following function to achieve this function. The main function of the VB application onboard a format conversion functions : AscW () will be converted to Unicode Chinese code

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