/// <summary>
/// Transmits control data over a default control endpoint.
/// </summary>
/// <param name="setupPacket">An 8-byte setup packet which contains parameters for the control request.
/// See section 9.3 USB Device Requests of the Universal Serial Bus Specification Revision 2.0 for more information. </param>
/// <param name="buffer">Data to be sent/received from the device.</param>
/// <param name="bufferLength">Length of the buffer param.</param>
/// <param name="lengthTransferred">Number of bytes sent or received (depends on the direction of the control transfer).</param>
/// <returns>True on success.</returns>
public override bool ControlTransfer(ref UsbSetupPacket setupPacket, IntPtr buffer, int bufferLength, out int lengthTransferred)
{
Debug.WriteLine(GetType().Name + ".ControlTransfer() Before", "Libusb-1.0");
int ret = MonoUsbApi.ControlTransferAsync((MonoUsbDeviceHandle)mUsbHandle,
setupPacket.RequestType,
setupPacket.Request,
setupPacket.Value,
setupPacket.Index,
buffer,
(short)bufferLength,
UsbConstants.DEFAULT_TIMEOUT);
Debug.WriteLine(GetType().Name + ".ControlTransfer() Error:" + ((MonoUsbError)ret).ToString(), "Libusb-1.0");
if (ret < 0)
{
UsbError.Error(ErrorCode.MonoApiError, ret, "ControlTransfer Failed", this);
lengthTransferred = 0;
return(false);
}
lengthTransferred = ret;
return(true);
}
