var fcomm: TFCOMM; viewstring:string; i:integer; rbuf,sbuf:array[16] of byte; //打开串口 procedure TFCOMM.FormShow(Sender: TObject); begin comm1.StartComm; end; //关闭串口 procedure TFCOMM.FormClose(Sender: TObject; var Action: TCloseAction); begin comm1.StopComm; end; //自定义发送数据过程 procedure senddata; var i:integer; commflg:boolean; begin viewstring:=‘’ ; commflg:=true; for i:=1 to 6 do begin if not fcomm.comm1.writecommdata(@sbuf[i],1) then begin commflg:=false; break; end; //发送时字节间的延时 sleep(2); viewstring:=viewstring+ inttohex(sbuf[i],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; //发送按钮的点击事件 procedure TFCOMM.Btn_sendClick(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; //接收过程 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[i],2)+‘’ ; viewstring:=‘接收’+ viewstring; memo1.lines.add(viewstring); memo1.lines.add(‘’ ); end;上面的不能下载,这段程序是我以前看到的,未运行过,你试试吧
解压密码:www.lvyin.net
fcomm: TFCOMM;
viewstring:string;
i:integer;
rbuf,sbuf:array[16] of byte;
//打开串口
procedure TFCOMM.FormShow(Sender: TObject);
begin
comm1.StartComm;
end;
//关闭串口
procedure TFCOMM.FormClose(Sender: TObject; var Action: TCloseAction);
begin
comm1.StopComm;
end;
//自定义发送数据过程
procedure senddata;
var
i:integer;
commflg:boolean;
begin
viewstring:=‘’ ;
commflg:=true;
for i:=1 to 6 do
begin
if not fcomm.comm1.writecommdata(@sbuf[i],1) then
begin
commflg:=false;
break;
end;
//发送时字节间的延时
sleep(2);
viewstring:=viewstring+ inttohex(sbuf[i],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;
//发送按钮的点击事件
procedure TFCOMM.Btn_sendClick(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;
//接收过程
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[i],2)+‘’ ;
viewstring:=‘接收’+ viewstring;
memo1.lines.add(viewstring);
memo1.lines.add(‘’ );
end;上面的不能下载,这段程序是我以前看到的,未运行过,你试试吧
这段代码我已有,最好给我Modem拔号的。