串口通信进门(国外英语资料).docVIP

串口通讯入门(国外英语资料) Serial communication portal,.Txt like me, this is revolutionary need, know?! You cant fold your clothes while you stay! Ill fold it later! I must give you happiness, who do not want to stop. The MSComm control transfers and receives data over the serial port, providing serial communication for the application. MSComm controls are very convenient in serial programming, and programmers dont have to spend time to understand the more complex API functions, and they can be used in VC, VB, Delphi and other languages. Microsoft Communications Control (hereinafter referred to as MSComm) is a simplified ActiveX control serial communication programming under Windows provided by Microsoft company, it provides applications with a simple method of sending and receiving data serial interface. Specifically, it provides two methods for dealing with communication problems: one is the event driven (Eventdriven) method, a query method. 1.MSComm controls two ways of communicating, MSComm controls provide the following two ways to handle communication: event driven and query methods. 1.1 event driven event driven communication is a very effective way to handle serial port interaction. In many cases, at the time of the incident should be notified of, for example, a character in the serial receive buffer, or Carrier Detect (CD) or Request To Send (RTS) on a character or a change to take place. In these cases, you can capture and process these communication events using the OnComm event of the MSComm control. The OnComm event can also check and handle communication errors. A list of all communication events and communication errors, see the CommEvent property. In the programming process, you can add your own processing code in the OnComm event handler. The advantage of this approach is that the program responds in a timely manner with high reliability. Each MSComm control corresponds to a serial port. If your application needs to access multiple serial ports, you must use m