Moved all source to the trunk directory.

LUFA/Drivers/USB/LowLevel/OTG.h

@@ -0,0 +1,102 @@
+/*
+             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.
+*/
+
+/** \file
+ *
+ *  Macros for embedded USB hosts with dual role On The Go capabilities, for managing role exchange. OTG
+ *  is a way for two USB dual role devices to talk to one another directly without fixed device/host roles.
+ *
+ *  \note These macros are only for AVRs which support the OTG protocol, and do not exist for device-only AVRs.
+ */
+
+#ifndef __USBOTG_H__
+#define __USBOTG_H__
+
+	/* Includes: */
+		#include <avr/io.h>
+		#include <stdbool.h>
+		
+		#include "../../../Common/Common.h"
+
+	/* Public Interface - May be used in end-application: */
+		/* Macros: */
+			/** Initiate a Host Negotiation Protocol request. This indicates to the other connected device
+			 *  that the device wishes to change device/host roles.
+			 */
+			#define USB_OTG_DEV_Request_HNP()          MACROS{ OTGCON |=  (1 << HNPREQ); }MACROE
+
+			/** Cancel a Host Negotiation Protocol request. This stops a pending HNP request to the other
+			 *  connected device.
+			 */
+			#define USB_OTG_DEV_Cancel_HNP_Request()   MACROS{ OTGCON &= ~(1 << HNPREQ); }MACROE
+
+			/** Returns boolean false if not currently sending a HNP to the other connected device, or true
+			 *  if a HNP is currently being issued.
+			 */
+			#define USB_OTG_DEV_IsSendingHNP()               ((OTGCON &   (1 << HNPREQ)) ? true : false)
+			
+			/** Accepts a HNP from a connected device, indicating that both devices should exchange
+			 *  device/host roles.
+			 */
+			#define USB_OTG_HOST_Accept_HNP()          USB_OTG_DEV_Request_HNP()
+
+			/** Rejects a HNP from a connected device, indicating that both devices should remain in their
+			 *  current device/host roles.
+			 */
+			#define USB_OTG_HOST_Reject_HNP()          USB_OTG_DEV_Cancel_HNP_Request()
+			
+			/** Returns boolean false if the connected device is not currently sending a HNP request, or true
+			 *  if a HNP is currently being issued by the connected device.
+			 */
+			#define USB_OTG_HOST_IsHNPReceived()             ((OTGCON &   (1 << HNPREQ)) ? true : false)
+			
+			/** Initiates a Session Request Protocol request. Most OTG devices turn off VBUS when the USB
+			 *  interface is not in use, to conserve power. Sending a SRP to a USB OTG device running in
+			 *  host mode indicates that VBUS should be applied and a session started.
+			 *
+			 *  There are two different methods of sending a SRP - either pulses on the VBUS line, or by
+			 *  pulsing the Data + line via the internal pullup resistor. The SRP mode is given as the
+			 *  "type" parameter, and can be either USB_OTG_SRP_VBUS or USB_OTG_STP_DATA.
+			 */
+			#define USB_OTG_DEV_Initiate_SRP(type)     MACROS{ OTGCON = ((OTGCON & ~(1 << SRPSEL)) | (type | (1 << SRPREQ))); }MACROE
+
+			/** Mask for the VBUS pulsing method of SRP, supported by some OTG devices.
+			 *
+			 *  \see USB_OTG_DEV_Initiate_SRP()
+			 */			 
+			#define USB_OTG_SRP_VBUS                   (1 << SRPSEL)
+
+			/** Mask for the Data + pulsing method of SRP, supported by some OTG devices.
+			 *
+			 *  \see USB_OTG_DEV_Initiate_SRP()
+			 */			 
+			#define USB_OTG_STP_DATA                   0
+
+#endif