{"id":577,"date":"2009-08-14T13:43:00","date_gmt":"2009-08-14T05:43:00","guid":{"rendered":""},"modified":"2013-11-17T17:21:01","modified_gmt":"2013-11-17T09:21:01","slug":"spcomm%e6%8e%a7%e4%bb%b6%e5%ba%94%e7%94%a8","status":"publish","type":"post","link":"https:\/\/kyle.ai\/blog\/577.html","title":{"rendered":"SPCOMM\u63a7\u4ef6\u5e94\u7528"},"content":{"rendered":"

SPCOMM\u7684\u4e3b\u8981\u5c5e\u6027\uff0c\u65b9\u6cd5\u548c\u4e8b\u4ef6<\/p>\n

1.\u5c5e\u6027<\/p>\n

CommName\uff1a\u586b\u5199COM1,COM2\u2026\u7b49\u4e32\u53e3\u7684\u540d\u5b57,\u5728\u6253\u5f00\u4e32\u53e3\u524d\uff0c\u5fc5\u987b\u586b\u5199\u597d\u6b64\u503c\u3002
\nBaudRate:\u8bbe\u5b9a\u6ce2\u7279\u73879600\uff0c4800\u7b49\uff0c\u6839\u636e\u5b9e\u9645\u9700\u8981\u6765\u5b9a\uff0c\u5728\u4e32\u53e3\u6253\u5f00\u540e\u4e5f\u53ef\u66f4\u6539\u6ce2\u7279\u7387\uff0c\u5b9e\u9645\u6ce2\u7279\u7387\u968f\u4e4b\u66f4\u6539\u3002
\nParityCheck\uff1a\u5947\u5076\u6821\u9a8c\u3002
\nByteSize\uff1a\u5b57\u8282\u957f\u5ea6_5,_6,_7,_8\u7b49\uff0c\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8bbe\u5b9a\u3002
\nParity\uff1a\u5947\u5076\u6821\u9a8c\u4f4d
\npBits\uff1a\u505c\u6b62\u4f4d
\nSendDataEmpty\uff1a\u8fd9\u662f\u4e00\u4e2a\u5e03\u5c14\u5c5e\u6027\uff0c\u4e3atrue\u65f6\u8868\u793a\u53d1\u9001\u7f13\u5b58\u4e3a\u7a7a\uff0c\u6216\u8005\u53d1\u9001\u961f\u5217\u91cc\u6ca1\u6709\u4fe1\u606f\uff1b\u4e3aFalse\u65f6\u8868\u793a\u8868\u793a\u53d1\u9001\u7f13\u5b58\u4e0d\u4e3a\u7a7a\uff0c\u6216\u8005\u53d1\u9001\u961f\u5217\u91cc\u6709\u4fe1\u606f\u3002<\/p>\n

2\uff0e\u65b9\u6cd5<\/p>\n

Startcomm\u8fc7\u7a0b\u7528\u4e8e\u6253\u5f00\u4e32\u53e3\uff0c\u5f53\u6253\u5f00\u5931\u8d25\u65f6\u901a\u5e38\u4f1a\u62a5\u9519\uff0c\u9519\u8bef\u4e3b\u8981\u67097\u79cd\uff1a
\n\u2474\u4e32\u53e3\u5df2\u7ecf\u6253\u5f00 \uff1b
\n\u2475\u6253\u5f00\u4e32\u53e3\u9519\u8bef \uff1b
\n\u2476\u6587\u4ef6\u53e5\u67c4\u4e0d\u662f\u901a\u8baf\u53e5\u67c4\uff1b
\n\u2477\u4e0d\u80fd\u591f\u5b89\u88c5\u901a\u8baf\u7f13\u5b58\uff1b
\n\u2478\u4e0d\u80fd\u4ea7\u751f\u4e8b\u4ef6 \uff1b
\n\u2479\u4e0d\u80fd\u4ea7\u751f\u8bfb\u8fdb\u7a0b\uff1b
\n\u247a\u4e0d\u80fd\u4ea7\u751f\u5199\u8fdb\u7a0b\uff1b<\/p>\n

StopComm\u8fc7\u7a0b\u7528\u4e8e\u5173\u95ed\u4e32\u53e3\uff0c\u6ca1\u6709\u8fd4\u56de\u503c\u3002<\/p>\n

\u51fd\u6570WriteCommData(pDataToWrite: PChar;dwSizeofDataToWrite:Word ): boolean \u7528\u4e8e\u53d1\u9001\u4e00\u4e2a\u5b57\u7b26\u4e32\u5230\u5199\u7ebf\u7a0b\uff0c\u53d1\u9001\u6210\u529f\u8fd4\u56detrue,\u53d1\u9001\u5931\u8d25\u8fd4\u56defalse, \u6267\u884c\u6b64\u51fd\u6570\u5c06\u7acb\u5373\u5f97\u5230\u8fd4\u56de\u503c\uff0c\u53d1\u9001\u64cd\u4f5c\u968f\u540e\u6267\u884c\u3002\u51fd\u6570\u6709\u4e24\u4e2a\u53c2\u6570\uff0c\u5176\u4e2d pdatatowrite\u662f\u8981\u53d1\u9001\u7684\u5b57\u7b26\u4e32\uff0cdwsizeofdatatowrite \u662f\u53d1\u9001\u7684\u957f\u5ea6\u3002<\/p>\n

3\uff0e\u4e8b\u4ef6<\/p>\n

OnReceiveData : procedure (Sender: TObject;Buffer: Pointer;BufferLength: Word) of object
\n\u5f53\u8f93\u5165\u7f13\u5b58\u6709\u6570\u636e\u65f6\u5c06\u89e6\u53d1\u8be5\u4e8b\u4ef6\uff0c\u5728\u8fd9\u91cc\u53ef\u4ee5\u5bf9\u4ece\u4e32\u53e3\u6536\u5230\u7684\u6570\u636e\u8fdb\u884c\u5904\u7406\u3002Buffer\u4e2d\u662f\u6536\u5230\u7684\u6570\u636e\uff0cbufferlength\u662f\u6536\u5230\u7684\u6570\u636e\u957f\u5ea6\u3002<\/p>\n

OnReceiveError : procedure(Sender: TObject; EventMask : DWORD)
\n\u5f53\u63a5\u53d7\u6570\u636e\u65f6\u51fa\u73b0\u9519\u8bef\u5c06\u89e6\u53d1\u8be5\u4e8b\u4ef6\u3002<\/p>\n

\r\nunit Unit1;\r\n\r\ninterface\r\n\r\nuses\r\n  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,\r\n  Dialogs, StdCtrls, SPComm;\r\n\r\ntype\r\n  TForm1 = class(TForm)\r\n    Comm1: TComm;\r\n    Memo1: TMemo;\r\n    procedure FormShow(Sender: TObject);\r\n    procedure FormClose(Sender: TObject; var Action: TCloseAction);\r\n    procedure FormCreate(Sender: TObject);\r\n    procedure Comm1ReceiveData(Sender: TObject; Buffer: Pointer;\r\n      BufferLength: Word);\r\n  private\r\n    { Private declarations }\r\n  public\r\n    { Public declarations }\r\n    procedure senddata;\r\n  end;\r\n\r\nvar\r\n  Form1: TForm1;\r\n\r\nimplementation\r\n\r\n{$R *.dfm}\r\n\/\/\u81ea\u5b9a\u4e49\u53d1\u9001\u6570\u636e\u8fc7\u7a0b\r\nprocedure TForm1.Comm1ReceiveData(Sender: TObject; Buffer: Pointer;\r\n  BufferLength: Word);\r\nvar\r\n  i:integer;\r\n  viewstring:AnsiString;\r\n  rbuf:array of AnsiChar;\r\nbegin\r\n  SetLength(viewstring,BufferLength);\r\n  move(buffer^,PansiChar(@viewstring[1])^,bufferlength);\r\n  memo1.lines.add(viewstring);\r\nend;\r\n\r\nprocedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);\r\nbegin\r\n  comm1.StopComm;\r\nend;\r\n\r\nprocedure TForm1.FormCreate(Sender: TObject);\r\nbegin\r\n  memo1.Text:='';\r\nend;\r\n\r\nprocedure TForm1.FormShow(Sender: TObject);\r\nbegin\r\n  comm1.CommName:='COM1';\r\n  Comm1.BaudRate:=4800;\r\n  comm1.ByteSize:=_8;\r\n  comm1.Parity:=None;\r\n  comm1.StopBits:=_1;\r\n  comm1.StartComm;\r\nend;\r\n\r\nprocedure TForm1.senddata;\r\nvar\r\n  i:integer;\r\n  commflg:boolean;\r\n  viewstring:string;\r\n  sbuf:array[0..7] of char;\r\nbegin\r\n  viewstring:='';\r\n  commflg:=true;\r\n  for i:=1 to 8 do\r\n  begin\r\n    if not comm1.writecommdata(@sbuf[i],1) then\r\n    begin\r\n    commflg:=false;\r\n    break;\r\n    end;\r\n     \/\/\u53d1\u9001\u65f6\u5b57\u8282\u95f4\u7684\u5ef6\u65f6\r\n    sleep(2);\r\n    viewstring:=viewstring+inttohex(strtoint(sbuf[i]),2)+'  ' ;\r\n  end;\r\n  viewstring:='\u53d1\u9001'+ viewstring;\r\n  memo1.lines.add(viewstring);\r\n  memo1.lines.add('');\r\n  if not commflg then messagedlg('\u53d1\u9001\u5931\u8d25 !' ,mterror,[mbyes],0);\r\nend;\r\n\r\nend.\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"
SPCOMM\u7684\u4e3b\u8981\u5c5e\u6027\uff0c\u65b9\u6cd5\u548c\u4e8b\u4ef6 1.\u5c5e\u6027 CommName\uff1a\u586b\u5199COM1,COM2\u2026\u7b49\u4e32\u53e3\u7684\u540d\u5b57,\u5728\u6253\u5f00\u4e32 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-577","post","type-post","status-publish","format-standard","hentry","category-code_related"],"_links":{"self":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/comments?post=577"}],"version-history":[{"count":1,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/577\/revisions"}],"predecessor-version":[{"id":4737,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/posts\/577\/revisions\/4737"}],"wp:attachment":[{"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/media?parent=577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/categories?post=577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kyle.ai\/blog\/wp-json\/wp\/v2\/tags?post=577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}