Copy existing Host mode demos to new ClassDriver and LowLevel subfolders.

Demos/Host/ClassDriver/KeyboardHostWithParser/HIDReport.c

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+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2009.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, and distribute this software
+  and its documentation for any purpose and without fee is hereby
+  granted, provided that the above copyright notice appear in all
+  copies and that both that the copyright notice and this
+  permission notice and warranty disclaimer appear in supporting
+  documentation, and that the name of the author not be used in
+  advertising or publicity pertaining to distribution of the
+  software without specific, written prior permission.
+
+  The author disclaim all warranties with regard to this
+  software, including all implied warranties of merchantability
+  and fitness.  In no event shall the author be liable for any
+  special, indirect or consequential damages or any damages
+  whatsoever resulting from loss of use, data or profits, whether
+  in an action of contract, negligence or other tortious action,
+  arising out of or in connection with the use or performance of
+  this software.
+*/
+
+#include "HIDReport.h"
+
+/** Size in bytes of the attached device's HID report descriptor */
+uint16_t         HIDReportSize;
+
+/** Processed HID report descriptor items structure, containing information on each HID report element */
+HID_ReportInfo_t HIDReportInfo;
+
+
+/** Function to read in the HID report descriptor from the attached device, and process it into easy-to-read
+ *  structures via the HID parser routines in the LUFA library.
+ *
+ *  \return  A value from the KeyboardHostWithParser_GetHIDReportDataCodes_t enum
+ */
+uint8_t GetHIDReportData(void)
+{
+	/* Create a buffer big enough to hold the entire returned HID report */
+	uint8_t HIDReportData[HIDReportSize];
+	
+	USB_ControlRequest = (USB_Request_Header_t)
+		{
+			.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_STANDARD | REQREC_INTERFACE),
+			.bRequest      = REQ_GetDescriptor,
+			.wValue        = (DTYPE_Report << 8),
+			.wIndex        = 0,
+			.wLength       = HIDReportSize,
+		};
+
+	/* Select the control pipe for the request transfer */
+	Pipe_SelectPipe(PIPE_CONTROLPIPE);
+
+	/* Send control request to retrieve the HID report from the attached device */
+	if (USB_Host_SendControlRequest(HIDReportData) != HOST_SENDCONTROL_Successful)
+	  return ParseControlError;
+
+	/* Send the HID report to the parser for processing */
+	if (USB_ProcessHIDReport(HIDReportData, HIDReportSize, &HIDReportInfo) != HID_PARSE_Successful)
+	  return ParseError;
+	
+	return ParseSuccessful;
+}
+