Now includes LUFA-120730 in repository
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protocol/lufa/LUFA-120730/LUFA/Common/ArchitectureSpecific.h
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protocol/lufa/LUFA-120730/LUFA/Common/ArchitectureSpecific.h
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2012.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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* \brief Architecture specific definitions relating to specific processor architectures.
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*
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* \copydetails Group_ArchitectureSpecific
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*
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* \note Do not include this file directly, rather include the Common.h header file instead to gain this file's
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* functionality.
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*/
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/** \ingroup Group_Common
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* \defgroup Group_ArchitectureSpecific Architecture Specific Definitions
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* \brief Architecture specific definitions relating to specific processor architectures.
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*
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* Architecture specific macros, functions and other definitions, which relate to specific architectures. This
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* definitions may or may not be available in some form on other architectures, and thus should be protected by
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* preprocessor checks in portable code to prevent compile errors.
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*
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* @{
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*/
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#ifndef __LUFA_ARCHSPEC_H__
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#define __LUFA_ARCHSPEC_H__
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/* Preprocessor Checks: */
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#if !defined(__INCLUDE_FROM_COMMON_H)
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#error Do not include this file directly. Include LUFA/Common/Common.h instead to gain this functionality.
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#endif
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/* Enable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* Public Interface - May be used in end-application: */
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/* Macros: */
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#if (ARCH == ARCH_AVR8) || (ARCH == ARCH_XMEGA) || defined(__DOXYGEN__)
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#if (ARCH == ARCH_AVR8) || defined(__DOXYGEN__)
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/** Re-enables the AVR's JTAG bus in software, until a system reset. This will re-enable JTAG debugging
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* interface after is has been disabled in software via \ref JTAG_DISABLE().
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*
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* \note This macro is not available for all architectures.
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*/
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#define JTAG_ENABLE() MACROS{ \
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__asm__ __volatile__ ( \
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"in __tmp_reg__,__SREG__" "\n\t" \
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"cli" "\n\t" \
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"out %1, %0" "\n\t" \
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"out __SREG__, __tmp_reg__" "\n\t" \
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"out %1, %0" "\n\t" \
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: \
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: "r" (MCUCR & ~(1 << JTD)), \
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"M" (_SFR_IO_ADDR(MCUCR)) \
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: "r0"); \
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}MACROE
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/** Disables the AVR's JTAG bus in software, until a system reset. This will override the current JTAG
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* status as set by the JTAGEN fuse, disabling JTAG debugging and reverting the JTAG pins back to GPIO
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* mode.
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*
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* \note This macro is not available for all architectures.
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*/
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#define JTAG_DISABLE() MACROS{ \
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__asm__ __volatile__ ( \
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"in __tmp_reg__,__SREG__" "\n\t" \
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"cli" "\n\t" \
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"out %1, %0" "\n\t" \
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"out __SREG__, __tmp_reg__" "\n\t" \
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"out %1, %0" "\n\t" \
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: \
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: "r" (MCUCR | (1 << JTD)), \
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"M" (_SFR_IO_ADDR(MCUCR)) \
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: "r0"); \
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}MACROE
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#endif
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/** Defines a volatile \c NOP statement which cannot be optimized out by the compiler, and thus can always
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* be set as a breakpoint in the resulting code. Useful for debugging purposes, where the optimizer
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* removes/reorders code to the point where break points cannot reliably be set.
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*
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* \note This macro is not available for all architectures.
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*/
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#define JTAG_DEBUG_POINT() __asm__ __volatile__ ("nop" ::)
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/** Defines an explicit JTAG break point in the resulting binary via the assembly \c BREAK statement. When
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* a JTAG is used, this causes the program execution to halt when reached until manually resumed.
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*
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* \note This macro is not available for all architectures.
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*/
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#define JTAG_DEBUG_BREAK() __asm__ __volatile__ ("break" ::)
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/** Macro for testing condition "x" and breaking via \ref JTAG_DEBUG_BREAK() if the condition is false.
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*
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* \note This macro is not available for all architectures.
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*
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* \param[in] Condition Condition that will be evaluated.
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*/
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#define JTAG_ASSERT(Condition) MACROS{ if (!(Condition)) { JTAG_DEBUG_BREAK(); } }MACROE
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/** Macro for testing condition \c "x" and writing debug data to the stdout stream if \c false. The stdout stream
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* must be pre-initialized before this macro is run and linked to an output device, such as the microcontroller's
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* USART peripheral.
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*
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* The output takes the form "{FILENAME}: Function {FUNCTION NAME}, Line {LINE NUMBER}: Assertion {Condition} failed."
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*
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* \note This macro is not available for all architectures.
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*
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* \param[in] Condition Condition that will be evaluated,
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*/
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#define STDOUT_ASSERT(Condition) MACROS{ if (!(x)) { \
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printf_P(PSTR("%s: Function \"%s\", Line %d: " \
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"Assertion \"%s\" failed.\r\n"), \
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__FILE__, __func__, __LINE__, #Condition); } }MACROE
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#if !defined(pgm_read_ptr) || defined(__DOXYGEN__)
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/** Reads a pointer out of PROGMEM space on the AVR8 architecture. This is currently a wrapper for the
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* avr-libc \c pgm_read_ptr() macro with a \c void* cast, so that its value can be assigned directly
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* to a pointer variable or used in pointer arithmetic without further casting in C. In a future
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* avr-libc distribution this will be part of the standard API and will be implemented in a more formal
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* manner.
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*
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* \note This macro is not available for all architectures.
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*
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* \param[in] Address Address of the pointer to read.
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*
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* \return Pointer retrieved from PROGMEM space.
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*/
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#define pgm_read_ptr(Address) (void*)pgm_read_word(Address)
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#endif
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#elif (ARCH == ARCH_UC3)
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#define JTAG_DEBUG_POINT() __asm__ __volatile__ ("nop" ::)
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#define JTAG_DEBUG_BREAK() __asm__ __volatile__ ("breakpoint" ::)
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#define JTAG_ASSERT(Condition) MACROS{ if (!(Condition)) { JTAG_DEBUG_BREAK(); } }MACROE
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#define STDOUT_ASSERT(Condition) MACROS{ if (!(x)) { \
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printf("%s: Function \"%s\", Line %d: " \
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"Assertion \"%s\" failed.\r\n"), \
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__FILE__, __func__, __LINE__, #Condition); } }MACROE
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#endif
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/* Disable C linkage for C++ Compilers: */
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#if defined(__cplusplus)
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}
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#endif
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#endif
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/** @} */
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