Merge commit '60b30c0363' as 'lib/lufa'

lib/lufa/LUFA/Drivers/Peripheral/TWI.h

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+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2017.
+
+  dean [at] fourwalledcubicle [dot] com
+           www.lufa-lib.org
+*/
+
+/*
+  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+  Permission to use, copy, modify, distribute, and sell this
+  software and its documentation for any purpose is hereby granted
+  without fee, 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 disclaims 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
+ *  \brief Hardware Two Wire Interface (I2C) driver.
+ *
+ *  This file is the master dispatch header file for the device-specific SPI driver, for microcontrollers
+ *  containing a hardware TWI.
+ *
+ *  User code should include this file, which will in turn include the correct TWI driver header file for the
+ *  currently selected architecture and microcontroller model.
+ */
+
+/** \ingroup Group_PeripheralDrivers
+ *  \defgroup Group_TWI TWI Driver - LUFA/Drivers/Peripheral/TWI.h
+ *  \brief Hardware Two Wire Interface (I2C) driver.
+ *
+ *  \section Sec_TWI_Dependencies Module Source Dependencies
+ *  The following files must be built with any user project that uses this module:
+ *    - LUFA/Drivers/Peripheral/<i>ARCH</i>/TWI_<i>ARCH</i>.c <i>(Makefile source module name: LUFA_SRC_TWI)</i>
+ *
+ *  \section Sec_TWI_ModDescription Module Description
+ *  Hardware TWI driver. This module provides an easy to use driver for the setup and transfer of data over
+ *  the selected architecture and microcontroller model's TWI bus port.
+ *
+ *  \note The exact API for this driver may vary depending on the target used - see
+ *        individual target module documentation for the API specific to your target processor.
+ */
+
+#ifndef __TWI_H__
+#define __TWI_H__
+
+	/* Macros: */
+		#define __INCLUDE_FROM_TWI_H
+
+	/* Includes: */
+		#include "../../Common/Common.h"
+
+	/* Includes: */
+		#if (ARCH == ARCH_AVR8)
+			#include "AVR8/TWI_AVR8.h"
+		#elif (ARCH == ARCH_XMEGA)
+			#include "XMEGA/TWI_XMEGA.h"
+		#else
+			#error The TWI peripheral driver is not currently available for your selected architecture.
+		#endif
+
+#endif
+