M
myriverman
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GUEST, unregistred user!
我能运行,能发出去,但收不到?为什么?
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, SPComm, StdCtrls;
type
Tfcomm = class(TForm)
Comm1: TComm;
Button1: TButton;
Memo1: TMemo;
procedure FormShow(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Button1Click(Sender: TObject);
procedure Comm1ReceiveData(Sender: TObject; Buffer: Pointer;
BufferLength: Word);
private
{ Private declarations }
public
{ Public declarations }
end;
var
fcomm: TFCOMM;
viewstring:string;
i:integer;
rbuf,sbuf:array[1..6] of byte;
implementation
{$R *.dfm}
procedure Tfcomm.FormShow(Sender: TObject);
begin
comm1.StartComm;
end;
procedure Tfcomm.FormClose(Sender: TObject; var Action: TCloseAction);
begin
comm1.StopComm;
end;
procedure senddata;
var
i:integer;
commflg:boolean;
begin
viewstring:='';
commflg:=true;
for i:=1 to 6 do
begin
if not fcomm.comm1.writecommdata(@sbuf,1) then
begin
commflg:=false;
break;
end; //发送时字节间的延时
sleep(2);
viewstring:=viewstring + inttohex(sbuf,2)+'' ;
end;
viewstring:='发送'+ viewstring;
fcomm.memo1.lines.add(viewstring);
fcomm.memo1.lines.add('');
if not commflg then messagedlg('发送失败',mterror,[mbyes],0);
end;
procedure Tfcomm.Button1Click(Sender: TObject);
begin
sbuf[1]:=byte($f0); //帧头
sbuf[2]:=byte($01); //命令号
sbuf[3]:=byte($ff);
sbuf[4]:=byte($ff);
sbuf[5]:=byte($01);
sbuf[6]:=byte($f0); //帧尾
senddata; //调用发送函数
end;
procedure Tfcomm.Comm1ReceiveData(Sender: TObject; Buffer: Pointer; BufferLength: Word);
var
i:integer;
begin
viewstring:='';
move(buffer^,pchar(@rbuf)^,bufferlength);
for i:=1 to bufferlength do
viewstring:=viewstring+inttohex(rbuf,2)+'';
viewstring:='接受'+ viewstring;
memo1.lines.add(viewstring);
memo1.lines.add('');
end;
end.
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, SPComm, StdCtrls;
type
Tfcomm = class(TForm)
Comm1: TComm;
Button1: TButton;
Memo1: TMemo;
procedure FormShow(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Button1Click(Sender: TObject);
procedure Comm1ReceiveData(Sender: TObject; Buffer: Pointer;
BufferLength: Word);
private
{ Private declarations }
public
{ Public declarations }
end;
var
fcomm: TFCOMM;
viewstring:string;
i:integer;
rbuf,sbuf:array[1..6] of byte;
implementation
{$R *.dfm}
procedure Tfcomm.FormShow(Sender: TObject);
begin
comm1.StartComm;
end;
procedure Tfcomm.FormClose(Sender: TObject; var Action: TCloseAction);
begin
comm1.StopComm;
end;
procedure senddata;
var
i:integer;
commflg:boolean;
begin
viewstring:='';
commflg:=true;
for i:=1 to 6 do
begin
if not fcomm.comm1.writecommdata(@sbuf,1) then
begin
commflg:=false;
break;
end; //发送时字节间的延时
sleep(2);
viewstring:=viewstring + inttohex(sbuf,2)+'' ;
end;
viewstring:='发送'+ viewstring;
fcomm.memo1.lines.add(viewstring);
fcomm.memo1.lines.add('');
if not commflg then messagedlg('发送失败',mterror,[mbyes],0);
end;
procedure Tfcomm.Button1Click(Sender: TObject);
begin
sbuf[1]:=byte($f0); //帧头
sbuf[2]:=byte($01); //命令号
sbuf[3]:=byte($ff);
sbuf[4]:=byte($ff);
sbuf[5]:=byte($01);
sbuf[6]:=byte($f0); //帧尾
senddata; //调用发送函数
end;
procedure Tfcomm.Comm1ReceiveData(Sender: TObject; Buffer: Pointer; BufferLength: Word);
var
i:integer;
begin
viewstring:='';
move(buffer^,pchar(@rbuf)^,bufferlength);
for i:=1 to bufferlength do
viewstring:=viewstring+inttohex(rbuf,2)+'';
viewstring:='接受'+ viewstring;
memo1.lines.add(viewstring);
memo1.lines.add('');
end;
end.