LRC校正碼 c,delphi c# 別人現成的

來源:互聯網
上載者:User

 c:

static unsigned char LRC(auchMsg,usDataLen)
  
  unsigned char *auchMsg ; /* 要進行計算的訊息 */
  
  unsigned short usDataLen ; /* LRC 要處理的位元組的數量*/
  
  { unsigned char uchLRC = 0 ; /* LRC 位元組初始化 */
  
  while (usDataLen--) /* 傳送訊息 */ 
  
  uchLRC += *auchMsg++ ; /* 累加*/ 
  
  return ((unsigned char)(-((char_uchLRC))) ;
  
  }

 

2:Delphi(Pascal) code

function GetLRC(AData: array of Byte;  iLen: Integer): Byte;
var
  iLoop : Integer;
begin
  Result := 0;
  for iLoop := 0 to iLen - 1 do Result := Result + AData[iLoop];
  Result := Result xor $FF + 1;
end;

function GetHexString(AData: array of Byte;  iLen: Integer): String;
var
  iLoop: Integer;
begin
  Result := '';
  for iLoop := 0 to iLen - 1 do
    Result := Result + IntToHex(AData[iLoop], 2);
  Result := Result + IntToHex(GetLRC(AData, iLen), 2);
end;

procedure TForm1.FormCreate(Sender: TObject);
var
  AData: array[0..5] of Byte;
begin
  AData[0] := $01;
  AData[1] := $02;
  AData[2] := $00;
  AData[3] := $00;
  AData[4] := $00;
  AData[5] := $01;
  ShowMessage(GetHexString(AData, 6));
end;

 

 

3:C# code
 static byte LRC(byte[] data)
  {
    byte lrc = 0;
    foreach (byte c in data)
    {
      lrc += c;
    }
    return (byte)-lrc; 
  }

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