private void btnXfer_Click(object sender, EventArgs e)
{
byte bmRequestType;
byte bRequest;
byte idPipe;
ushort wValue;
ushort wIndex;
ushort wLength;
byte[] arbData;
PipeStream pipe;
EndpointItem item;
int cbRead;
try
{
item = (EndpointItem)drpEndpoint.SelectedItem;
if (item.PipeId == -1)
{
// Control transfer
bmRequestType = ReadHexByte(txtType);
bRequest = ReadHexByte(txtRequest);
wValue = ReadHexWord(txtValue);
wIndex = ReadHexWord(txtIndex);
if (radIn.Checked)
{
wLength = ReadInt(txtLength);
arbData = m_Device.ControlRead(bmRequestType, bRequest, wValue, wIndex, wLength);
// Check for the case of getting a string descriptor
bmRequestType |= 0x80;
wValue >>= 8;
if (bmRequestType == 0x80 && bRequest == 6 && wValue == 3 && arbData.Length > 2)
{
string str = Encoding.Unicode.GetString(arbData, 2, arbData.Length - 2);
LogMsg(str, MsgType.MSG_In);
}
else
{
LogData(arbData, arbData.Length, MsgType.MSG_In);
}
}
else
{
arbData = ReadOutData();
wLength = (ushort)arbData.Length;
m_Device.ControlWrite(bmRequestType, bRequest, wValue, wIndex, arbData);
LogData(arbData, arbData.Length, MsgType.MSG_Out);
}
}
else
{
// bulk data transfer
idPipe = (byte)item.PipeId;
pipe = m_Device.PipeStreams[idPipe];
if (radIn.Checked)
{
wLength = ReadInt(txtLength);
arbData = new byte[wLength];
if (wLength == 1)
{
// Test ReadByte()
cbRead = pipe.ReadByte();
if (cbRead == -1)
{
cbRead = 0;
}
else
{
arbData[0] = (byte)cbRead;
cbRead = 1;
}
}
else
{
cbRead = pipe.Read(arbData, 0, arbData.Length);
}
LogData(arbData, cbRead, MsgType.MSG_In);
}
else
{
arbData = ReadOutData();
if (arbData.Length == 1)
{
pipe.WriteByte(arbData[0]);
}
else
{
pipe.Write(arbData, 0, arbData.Length);
}
LogData(arbData, arbData.Length, MsgType.MSG_Out);
}
}
}
catch (Exception exc)
{
LogMsg(exc.Message, MsgType.MSG_Info);
return;
}
}