📄 在delphi中用spcomm实现串口编程.htm
字号:
lang=EN-US> 6</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">个字节。当</SPAN><SPAN
lang=EN-US> PC</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">发出（</SPAN><SPAN
lang=EN-US> F0,01,FF,FF,01,F0</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）后</SPAN><SPAN
lang=EN-US> 8051</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">能收到一帧（</SPAN><SPAN
lang=EN-US> F0,01,FF,FF,01,F0</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">），表示数据通信握手成功，两者之间就可以按照协议相互传输数据。</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">创建一个新的工程</SPAN><SPAN
lang=EN-US> COMM.DPR</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，把窗体的</SPAN><SPAN
lang=EN-US> NAME</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">属性定为</SPAN><SPAN
lang=EN-US> FCOMM</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">，把窗体的标题定义为测试通信，按照图</SPAN><SPAN
lang=EN-US> 2</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">添加控件</SPAN><SPAN
lang=EN-US> (</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">图</SPAN><SPAN
lang=EN-US> 2</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中黑色矩形围住的控件即为</SPAN><SPAN
lang=EN-US> COMM1)</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"> </SPAN></SPAN><SPAN lang=EN-US
style="FONT-SIZE: 9pt; COLOR: black"><!--[if gte vml 1]><v:shape id=_x0000_i1026
style="WIDTH: 225pt; HEIGHT: 114.75pt" type = "#_x0000_t75" coordsize =
"21600,21600" alt = ""> <v:imagedata src = "./comif-42.files/image002.jpg"
o:href =
"http://www.gjwtech.com/pic/picserial/scdelphisp02.jpg"></v:imagedata></v:shape><![endif]--><![if !vml]><img width=300 height=153
src="./comif-42.files/image002.jpg" v:shapes="_x0000_i1026"><![endif]></SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">图</SPAN><SPAN
lang=EN-US> 2 </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>1.</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设定</SPAN><SPAN
lang=EN-US> COMM1</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">属性：</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">●波特率：</SPAN><SPAN
lang=EN-US> 4800</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">；</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">●奇偶校验位：无；</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">●字节长度：</SPAN><SPAN
lang=EN-US> 8</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">；</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">●停止位：</SPAN><SPAN
lang=EN-US> 1</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">；</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">●串口：</SPAN><SPAN
lang=EN-US> COM1</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>Memo1</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中将显示发送和接收的数据。将新的窗体存储为</SPAN><SPAN
lang=EN-US> Comm.pas</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>2.</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">编写源代码</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>//</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">变量说明</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>var </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>fcomm: TFCOMM; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>viewstring:string; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>i:integer; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>rbuf,sbuf:array[16] of byte; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>//</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">打开串口</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>procedure TFCOMM.FormShow(Sender: TObject);
</SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>begin </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>comm1.StartComm; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>end; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>//</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">关闭串口</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>procedure TFCOMM.FormClose(Sender: TObject;
var Action: TCloseAction); </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>begin </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>comm1.StopComm; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>end; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>//</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">自定义发送数据过程</SPAN><SPAN
lang=EN-US> </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>procedure senddata; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>var </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>i:integer; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>commflg:boolean; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>begin </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>viewstring:=‘’ ; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
style="mso-spacerun: yes"></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN lang=EN-US>commflg:=true; </SPAN></P>
<P class=MsoNormal><SPAN lang=EN-US><SPAN
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