程序如下:---ReceiveData事件为什么没触发请前辈指教....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;
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货