private static bool ReceiveByteFromBitBangStream(out byte value)
{
value = 0;
try
{
Ftd2Xx.FT_STATUS ftStatus;
uint bytesRead;
if (_recBufLastIndex < 0)
{ // all buffers empty
//Debug.WriteLine("Start");
ftStatus = Ftd2Xx.FT_ReadWrapper(_handleFtdi, BitBangRecBuffer[0], BitBangRecBufferSize, 0, out bytesRead);
if (ftStatus != Ftd2Xx.FT_STATUS.FT_OK)
{
return(false);
}
ftStatus = Ftd2Xx.FT_ReadWrapper(_handleFtdi, BitBangRecBuffer[1], BitBangRecBufferSize, 0, out bytesRead);
if (ftStatus != Ftd2Xx.FT_STATUS.FT_OK)
{
return(false);
}
_recBufLastIndex = 1;
_recBufReadPos = 0;
_recBufReadIndex = 0;
}
else
{
if (_recBufLastIndex == _recBufReadIndex)
{ // get next buffer
//Debug.WriteLine("New buf");
_recBufLastIndex = (_recBufLastIndex == 0) ? 1 : 0;
ftStatus = Ftd2Xx.FT_ReadWrapper(_handleFtdi, BitBangRecBuffer[_recBufLastIndex], BitBangRecBufferSize, 0, out bytesRead);
if (ftStatus != Ftd2Xx.FT_STATUS.FT_OK)
{
_recBufLastIndex = -1;
return(false);
}
}
}
if (!GetByteFromDataStream(out value))
{
return(false);
}
}
catch (Exception)
{
return(false);
}
return(true);
}
public static bool InterfaceReceiveData(byte[] receiveData, int offset, int length, int timeout, int timeoutTelEnd, EdiabasNet ediabasLog)
{
if (_handleFtdi == (IntPtr)0)
{
return(false);
}
#if WindowsCE
if (timeout < ReadTimeoutCeMin)
{
timeout = ReadTimeoutCeMin;
}
if (timeoutTelEnd < ReadTimeoutCeMin)
{
timeoutTelEnd = ReadTimeoutCeMin;
}
#endif
try
{
int recLen;
#if USE_BITBANG
if (_bitBangMode)
{
recLen = 0;
while (recLen < length)
{
int currTimeout = (recLen == 0) ? timeout : timeoutTelEnd;
long startTime = Stopwatch.GetTimestamp();
for (; ;)
{
byte value;
if (ReceiveByteFromBitBangStream(out value))
{
receiveData[offset + recLen] = value;
recLen++;
break;
}
if (recLen >= length)
{
break;
}
if ((Stopwatch.GetTimestamp() - startTime) > currTimeout * TickResolMs)
{
if (ediabasLog != null)
{
ediabasLog.LogData(EdiabasNet.EdLogLevel.Ifh, receiveData, offset, recLen, "Rec ");
}
return(false);
}
}
}
if (ediabasLog != null)
{
ediabasLog.LogData(EdiabasNet.EdLogLevel.Ifh, receiveData, offset, recLen, "Rec ");
}
return(true);
}
#endif
uint bytesRead;
Ftd2Xx.FT_STATUS ftStatus = Ftd2Xx.FT_SetTimeouts(_handleFtdi, (uint)timeout, WriteTimeout);
if (ftStatus != Ftd2Xx.FT_STATUS.FT_OK)
{
return(false);
}
ftStatus = Ftd2Xx.FT_ReadWrapper(_handleFtdi, receiveData, 1, offset, out bytesRead);
if (ftStatus != Ftd2Xx.FT_STATUS.FT_OK)
{
return(false);
}
recLen = (int)bytesRead;
if (recLen < 1)
{
return(false);
}
if (recLen < length)
{
ftStatus = Ftd2Xx.FT_SetTimeouts(_handleFtdi, (uint)timeoutTelEnd, WriteTimeout);
if (ftStatus != Ftd2Xx.FT_STATUS.FT_OK)
{
return(false);
}
while (recLen < length)
{
ftStatus = Ftd2Xx.FT_ReadWrapper(_handleFtdi, receiveData, length - recLen, offset + recLen, out bytesRead);
if (ftStatus != Ftd2Xx.FT_STATUS.FT_OK)
{
return(false);
}
if (bytesRead <= 0)
{
break;
}
recLen += (int)bytesRead;
}
}
if (ediabasLog != null)
{
ediabasLog.LogData(EdiabasNet.EdLogLevel.Ifh, receiveData, offset, recLen, "Rec ");
}
if (recLen < length)
{
return(false);
}
}
catch (Exception)
{
return(false);
}
return(true);
}