WIN32環境下對PC機通用串行口通信的研究及實現

電子機電論文編號:JD686  論文字數:19301,頁數:51

目 錄

摘要……………………………………………………………………………… Ⅰ
Abstract………………………………………………………………………… Ⅱ
緒論………………………………………………………………………………  1
第一章  基本概念………………………………………………………………  3
1.1 通信……………………………………………………………………  3
1.1.1 數據發送………………………………………………………  3
1.1.2 通信的種類……………………………………………………  4
1.2 串行通信………………………………………………………………  4
    1.2.1 RS-232串行通信………………………………………………  4
1.2.2 RS-232C及其電氣特性 ………………………………………  5
1.2.3 遠距離通信……………………………………………………  7
1.2.4 近距離通信……………………………………………………  8
1.2.5 串口通信的其他問題…………………………………………  8
第二章  WIN32下的操作系統概述…………………………………………  12
第三章  串行通信程序及組組件建立………………………………………… 14
3.1 用于串行通信的WIN32 API簡述…………………………………… 14
    3.1.1串行通信相關函數……………………………………………  14
        3.1.2使用流程………………………………………………………  16
3.2 串行通信中的字符與字節……………………………………………  17
3.2.1字符和字節的差別……………………………………………  17
    3.2.2  C++ Builder中的字符串…………………………………… 17
3.3 串行通信組件的創建…………………………………………………  17
        3.3.1可視組件庫 ……………………………………………………  18
        3.3.2 組件和類………………………………………………………  18
        3.3.3 創建不可視組件………………………………………………  19
3.4 通過串行通信組件創建傳輸界面……………………………………  25
        3.4.1界面設計………………………………………………………   25
        3.4.2功能設計………………………………………………………  25
結論………………………………………………………………………………  27
致謝………………………………………………………………………………  28
參考文獻…………………………………………………………………………  29
附錄………………………………………………………………………………  30
附錄1………………………………………………………………………  30
附錄2………………………………………………………………………  45

摘 要
當今世界是一個高度自動化的社會，各式各樣的設備都可以和計算機聯機，而最簡單的自動化聯機方式就是使用串行通信。串行通信存在的時間已經不短了，隨著科技的發展，它不但沒有被取代，其應用反而越來越廣。這是因為串行通信設備硬件設備的實現比較簡單，而且使用也比較簡單
串行通信是計算機之間或計算機與其它硬件通信的一種手段, 被廣泛地應用于數據采集、工業監控等領域。由于串行口通信經常被使用, 所以應找到一種可以重復利用的方法, 以方便今后使用。C++ Builder給程序設計人員提供了相當好的開發環境，開發VCL組件也相當簡單。通過將用于對串口操作的Windows API 函數封裝在我們自己定制的組件中, 可以很方便地對串口進行各種操作, 而且還能在多種編程環境下重復使用。
本次設計將利用C++ Builder平臺開發一個VCL組件，用以實現WIN32環境下的串口通信的程序開發。并利用該組件開發一個計算機之間的數據交換界面，實現基本的數據交換。

關鍵詞：串行通信；C++ Builder；組件；API函數；WIN32

Abstract
Nowadays the society that world is a to automate highly, various equipments can and the calculator  machine, but the most simple automation   machine method is to use the string to go the correspondence. The string goes to correspond by letter existent time already not short, along with the development of science and technology, it did not is replace not only, it is applied on the contrary and more and more widely. This is because a realization that goes to correspond by letter the equipments hardware equipments is more and in brief, and the usage is also more simple
The string go the correspondence is a calculator occasionally calculator and other hard wares correspondence of a kind of means, is been apply in the data to collect broadly, the industry supervision etc. realm. The string goes a people's correspondence to usually be used for, so should find out a kind of method that can repeat the exploitation, using from now on with the convenience. C++ the Builder gave the program design the personnel provide the fairly good development environment, the development VCL module is also very simple. Pass will used for to operate to the an of the function of Windows API seal to pack in the module that we makes to order by ourselves, can carry on various operation to the a very expediently, and return the ability to use again under various plaits  distance environment.
A design will make use of the C++ Builder the terrace of Builder develops a VCL module, carrying out the environment of WIN32 in order to under of the a development that corresponds by letter the procedure. Make use of the data of for that module to develop a calculator to exchange the interface also, carry out the basic data commutation.

Keyword：Serial Communication；C++ Builder；Module；Function of API