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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 Architecture specific definitions relating to specific processor architectures.
+ *
+ * \copydetails Group_ArchitectureSpecific
+ *
+ * \note Do not include this file directly, rather include the Common.h header file instead to gain this file's
+ * functionality.
+ */
+
+/** \ingroup Group_Common
+ * \defgroup Group_ArchitectureSpecific Architecture Specific Definitions
+ * \brief Architecture specific definitions relating to specific processor architectures.
+ *
+ * Architecture specific macros, functions and other definitions, which relate to specific architectures. This
+ * definitions may or may not be available in some form on other architectures, and thus should be protected by
+ * preprocessor checks in portable code to prevent compile errors.
+ *
+ * @{
+ */
+
+#ifndef __LUFA_ARCHSPEC_H__
+#define __LUFA_ARCHSPEC_H__
+
+ /* Preprocessor Checks: */
+ #if !defined(__INCLUDE_FROM_COMMON_H)
+ #error Do not include this file directly. Include LUFA/Common/Common.h instead to gain this functionality.
+ #endif
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Macros: */
+ #if (ARCH == ARCH_AVR8) || (ARCH == ARCH_XMEGA) || defined(__DOXYGEN__)
+ #if (ARCH == ARCH_AVR8) || defined(__DOXYGEN__)
+ /** Re-enables the AVR's JTAG bus in software, until a system reset. This will re-enable JTAG debugging
+ * interface after is has been disabled in software via \ref JTAG_DISABLE().
+ *
+ * \note This macro is not available for all architectures.
+ */
+ #define JTAG_ENABLE() do { \
+ __asm__ __volatile__ ( \
+ "in __tmp_reg__,__SREG__" "\n\t" \
+ "cli" "\n\t" \
+ "out %1, %0" "\n\t" \
+ "out __SREG__, __tmp_reg__" "\n\t" \
+ "out %1, %0" "\n\t" \
+ : \
+ : "r" (MCUCR & ~(1 << JTD)), \
+ "M" (_SFR_IO_ADDR(MCUCR)) \
+ : "r0"); \
+ } while (0)
+
+ /** Disables the AVR's JTAG bus in software, until a system reset. This will override the current JTAG
+ * status as set by the JTAGEN fuse, disabling JTAG debugging and reverting the JTAG pins back to GPIO
+ * mode.
+ *
+ * \note This macro is not available for all architectures.
+ */
+ #define JTAG_DISABLE() do { \
+ __asm__ __volatile__ ( \
+ "in __tmp_reg__,__SREG__" "\n\t" \
+ "cli" "\n\t" \
+ "out %1, %0" "\n\t" \
+ "out __SREG__, __tmp_reg__" "\n\t" \
+ "out %1, %0" "\n\t" \
+ : \
+ : "r" (MCUCR | (1 << JTD)), \
+ "M" (_SFR_IO_ADDR(MCUCR)) \
+ : "r0"); \
+ } while (0)
+ #endif
+
+ /** Defines a volatile \c NOP statement which cannot be optimized out by the compiler, and thus can always
+ * be set as a breakpoint in the resulting code. Useful for debugging purposes, where the optimizer
+ * removes/reorders code to the point where break points cannot reliably be set.
+ *
+ * \note This macro is not available for all architectures.
+ */
+ #define JTAG_DEBUG_POINT() __asm__ __volatile__ ("nop" ::)
+
+ /** Defines an explicit JTAG break point in the resulting binary via the assembly \c BREAK statement. When
+ * a JTAG is used, this causes the program execution to halt when reached until manually resumed.
+ *
+ * \note This macro is not available for all architectures.
+ */
+ #define JTAG_DEBUG_BREAK() __asm__ __volatile__ ("break" ::)
+
+ /** Macro for testing condition "x" and breaking via \ref JTAG_DEBUG_BREAK() if the condition is false.
+ *
+ * \note This macro is not available for all architectures.
+ *
+ * \param[in] Condition Condition that will be evaluated.
+ */
+ #define JTAG_ASSERT(Condition) do { \
+ if (!(Condition)) \
+ JTAG_DEBUG_BREAK(); \
+ } while (0)
+
+ /** Macro for testing condition \c "x" and writing debug data to the stdout stream if \c false. The stdout stream
+ * must be pre-initialized before this macro is run and linked to an output device, such as the microcontroller's
+ * USART peripheral.
+ *
+ * The output takes the form "{FILENAME}: Function {FUNCTION NAME}, Line {LINE NUMBER}: Assertion {Condition} failed."
+ *
+ * \note This macro is not available for all architectures.
+ *
+ * \param[in] Condition Condition that will be evaluated,
+ */
+ #define STDOUT_ASSERT(Condition) do { \
+ if (!(Condition)) \
+ printf_P(PSTR("%s: Function \"%s\", Line %d: " \
+ "Assertion \"%s\" failed.\r\n"), \
+ __FILE__, __func__, __LINE__, #Condition); \
+ } while (0)
+
+ #if !defined(pgm_read_ptr) || defined(__DOXYGEN__)
+ /** Reads a pointer out of PROGMEM space on the AVR8 architecture. This is a wrapper for the avr-libc
+ * \c pgm_read_word() macro with a \c void* cast, so that its value can be assigned directly to a
+ * pointer variable or used in pointer arithmetic without further casting in C.
+ *
+ * \note This macro is not available for all architectures.
+ *
+ * \param[in] Address Address of the pointer to read.
+ *
+ * \return Pointer retrieved from PROGMEM space.
+ */
+ #define pgm_read_ptr(Address) (void*)pgm_read_word(Address)
+ #endif
+ #elif (ARCH == ARCH_UC3)
+ #define JTAG_DEBUG_POINT() __asm__ __volatile__ ("nop" ::)
+ #define JTAG_DEBUG_BREAK() __asm__ __volatile__ ("breakpoint" ::)
+ #define JTAG_ASSERT(Condition) do { \
+ if (!(Condition)) \
+ JTAG_DEBUG_BREAK(); \
+ } while (0)
+ #define STDOUT_ASSERT(Condition) do { \
+ if (!(Condition)) \
+ printf("%s: Function \"%s\", Line %d: " \
+ "Assertion \"%s\" failed.\r\n", \
+ __FILE__, __func__, __LINE__, #Condition); \
+ } while (0)
+ #endif
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
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