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您可以通过COM端口显示留言板链接

用VC控件MSComm编写串口通信程序的源代码，并写出详细的编程过程,仅供参考-MSComm control VC prepared serial communication program"s source code, and write a detailed programming process for reference! !

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

VB串口控件属性 之关于使用 VB 与单片机通信-VB serial control attribute on the use of VB with the single-chip communication

的问题.派尔高协议,控制左转右转时,出现问题.其他功能好用.我用DELPHI写的程序,在MOUSEDOWN中, str := chr($FF)+chr($01)+chr($00)+chr($04)+chr($0F)+chr($00)+chr($14) MSComm1.output := str 在CLICK事件中: str := chr($FF)+chr($01)+chr($00)+chr($00)+chr($00)+chr($00)+chr($01) MSComm1.output := str -Problem. Pelco agreement左转右转control when there are problems. Other features easy to use. DELPHI I used to write the procedures in the MouseDown, str: = chr ($ FF)+ Chr ($ 01)+ chr ($ 00)+ chr ($ 04)+ chr ($ 0F)+ chr ($ 00)+ chr ($ 14) MSComm1.output: = str in the CLICK event: str: = chr ($ FF)+ chr ($ 01)+ chr ($ 00)+ chr ($ 00)+ chr ($ 00)+ chr ($ 00)+ chr ($ 01) MSComm1.output: = str

RK4000通讯协议.-RK4000 communication protocol.

Advantech设计的外板预警系统。通过这个可以测出部分板卡的错误信息-Advantech designed plate early warning system. Through this part can detect the wrong message board

详细描述了利用并行模拟I2C总线协议实现Myson MTV230芯片电路编程（ISP）的过程，并利用PC机串行通信实现Winbond W78E516B线编程（ISP）的过程描述了PC机串行口和并行开发在单片机中的应用。

max232通讯驱动源程序-max232 communications driver source

C51下怎样实现I2C的控制及程序实例 此程序仅供参考-C51 how to achieve I2C control procedures and examples of this procedure is for reference only