From 60b30c036397cb5627fa374bb930794b225daa29 Mon Sep 17 00:00:00 2001 From: Jack Humbert Date: Fri, 7 Jul 2017 11:55:23 -0400 Subject: Squashed 'lib/lufa/' content from commit 385d40300 git-subtree-dir: lib/lufa git-subtree-split: 385d4030035dbaf41591309dbde47653bd03841b --- LUFA/Common/ArchitectureSpecific.h | 185 +++++++++++++++++++++++++++++++++++++ 1 file changed, 185 insertions(+) create mode 100644 LUFA/Common/ArchitectureSpecific.h (limited to 'LUFA/Common/ArchitectureSpecific.h') diff --git a/LUFA/Common/ArchitectureSpecific.h b/LUFA/Common/ArchitectureSpecific.h new file mode 100644 index 000000000..28f2900b9 --- /dev/null +++ b/LUFA/Common/ArchitectureSpecific.h @@ -0,0 +1,185 @@ +/* + 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 + +/** @} */ + -- cgit v1.2.3