public static void RTU2ASCII(byte[] nRtu, int Size, byte[] nAscii)
{
for (var i = 0; i < Size; i++)
{
nAscii[1 + i * 2] = Num2Ascii(ByteAccess.HI4BITS(nRtu[i]));
nAscii[1 + i * 2 + 1] = Num2Ascii(ByteAccess.LO4BITS(nRtu[i]));
}
}
private Result TxRxAscii(byte[] TXBuf, int QueryLength, byte[] RXBuf, int ResponseLength)
{
var num = 0;
var array = new byte[531];
var array2 = new byte[523];
Ascii.RTU2ASCII(TXBuf, QueryLength, array);
var n = Ascii.LRC(TXBuf, QueryLength);
array[0] = 58;
array[QueryLength * 2 + 1] = Ascii.Num2Ascii(ByteAccess.HI4BITS(n));
array[QueryLength * 2 + 2] = Ascii.Num2Ascii(ByteAccess.LO4BITS(n));
array[QueryLength * 2 + 3] = 13;
array[QueryLength * 2 + 4] = 10;
this.port.DiscardInBuffer();
this.port.DiscardOutBuffer();
try
{
this.port.Write(array, 0, QueryLength * 2 + 5);
}
catch (Exception ex)
{
this.Error = ex.Message;
return(Result.WRITE);
}
this._txBufSize = QueryLength * 2 + 5;
Array.Copy(array, this._txBuf, this._txBufSize);
if (TXBuf[0] == 0)
{
return(Result.SUCCESS);
}
if (this._removeEcho)
{
try
{
do
{
var num2 = this.port.Read(RXBuf, 0, this._txBufSize - num);
num += num2;
}while (this._txBufSize - num > 0);
}
catch (TimeoutException ex2)
{
this.Error = ex2.Message;
return(Result.RESPONSE_TIMEOUT);
}
catch (Exception ex3)
{
this.Error = ex3.Message;
return(Result.READ);
}
num = 0;
}
try
{
do
{
var num3 = this.port.Read(array2, num, 11 - num);
num += num3;
}while (11 - num > 0);
}
catch (TimeoutException ex4)
{
this.Error = ex4.Message;
return(Result.RESPONSE_TIMEOUT);
}
catch (Exception ex5)
{
this.Error = ex5.Message;
return(Result.READ);
}
finally
{
this._rxBufSize = num;
Array.Copy(array2, this._rxBuf, this._rxBufSize);
}
if (Ascii.HiLo4BitsToByte(Ascii.Ascii2Num(array2[3]), Ascii.Ascii2Num(array2[4])) > 128)
{
if (!Ascii.VerifyRespLRC(array2, 11))
{
return(Result.CRC);
}
return((Result)Ascii.HiLo4BitsToByte(Ascii.Ascii2Num(array2[5]), Ascii.Ascii2Num(array2[6])));
}
if (ResponseLength == int.MaxValue)
{
if (Ascii.HiLo4BitsToByte(Ascii.Ascii2Num(array2[3]), Ascii.Ascii2Num(array2[4])) != 17)
{
return(Result.RESPONSE);
}
ResponseLength = Ascii.HiLo4BitsToByte(Ascii.Ascii2Num(array2[5]), Ascii.Ascii2Num(array2[6])) + 3;
}
try
{
var num4 = ResponseLength * 2 + 5;
do
{
var num5 = this.port.Read(array2, num, num4 - num);
num += num5;
}while (num4 - num > 0);
}
catch (TimeoutException ex6)
{
this.Error = ex6.Message;
return(Result.RESPONSE_TIMEOUT);
}
catch (Exception ex7)
{
this.Error = ex7.Message;
return(Result.READ);
}
finally
{
this._rxBufSize = num;
Array.Copy(array2, this._rxBuf, this._rxBufSize);
}
if (!Ascii.VerifyRespLRC(array2, num))
{
return(Result.CRC);
}
if (array2[num - 2] != 13 || array2[num - 1] != 10)
{
return(Result.RESPONSE);
}
var num6 = (num - 5) / 2;
for (var i = 0; i < num6; i++)
{
RXBuf[i] = Ascii.HiLo4BitsToByte(Ascii.Ascii2Num(array2[1 + i * 2]), Ascii.Ascii2Num(array2[2 + i * 2]));
}
return(Result.SUCCESS);
}