From 821563417565776d2dc3a02b0265e6fcd5218739 Mon Sep 17 00:00:00 2001 From: tmk Date: Mon, 11 Feb 2013 22:57:40 +0900 Subject: Now includes LUFA-120730 in repository --- protocol/lufa/LUFA-120730/LUFA/Common/Common.h | 381 +++++++++++++++++++++++++ 1 file changed, 381 insertions(+) create mode 100644 protocol/lufa/LUFA-120730/LUFA/Common/Common.h (limited to 'protocol/lufa/LUFA-120730/LUFA/Common/Common.h') diff --git a/protocol/lufa/LUFA-120730/LUFA/Common/Common.h b/protocol/lufa/LUFA-120730/LUFA/Common/Common.h new file mode 100644 index 0000000000..cf1f49b9da --- /dev/null +++ b/protocol/lufa/LUFA-120730/LUFA/Common/Common.h @@ -0,0 +1,381 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2012. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2012 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 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. +*/ + +/** \dir + * \brief Common library header files. + * + * This folder contains header files which are common to all parts of the LUFA library. They may be used freely in + * user applications. + */ + +/** \file + * \brief Common library convenience headers, macros and functions. + * + * \copydetails Group_Common + */ + +/** \defgroup Group_Common Common Utility Headers - LUFA/Drivers/Common/Common.h + * \brief Common library convenience headers, macros and functions. + * + * Common utility headers containing macros, functions, enums and types which are common to all + * aspects of the library. + * + * @{ + */ + +/** \defgroup Group_GlobalInt Global Interrupt Macros + * \brief Convenience macros for the management of interrupts globally within the device. + * + * Macros and functions to create and control global interrupts within the device. + */ + +#ifndef __LUFA_COMMON_H__ +#define __LUFA_COMMON_H__ + + /* Macros: */ + #define __INCLUDE_FROM_COMMON_H + + /* Includes: */ + #include + #include + #include + #include + + #include "Architectures.h" + #include "BoardTypes.h" + #include "ArchitectureSpecific.h" + #include "CompilerSpecific.h" + #include "Attributes.h" + + #if defined(USE_LUFA_CONFIG_HEADER) + #include "LUFAConfig.h" + #endif + + /* Enable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + extern "C" { + #endif + + /* Architecture specific utility includes: */ + #if defined(__DOXYGEN__) + /** Type define for an unsigned integer the same width as the selected architecture's machine register. + * This is distinct from the non-specific standard int data type, whose width is machine dependant but + * which may not reflect the actual machine register width on some targets (e.g. AVR8). + */ + typedef MACHINE_REG_t uint_reg_t; + #elif (ARCH == ARCH_AVR8) + #include + #include + #include + #include + #include + #include + #include + + typedef uint8_t uint_reg_t; + + #define ARCH_HAS_EEPROM_ADDRESS_SPACE + #define ARCH_HAS_FLASH_ADDRESS_SPACE + #define ARCH_HAS_MULTI_ADDRESS_SPACE + #define ARCH_LITTLE_ENDIAN + + #include "Endianness.h" + #elif (ARCH == ARCH_UC3) + #include + #include + + // === TODO: Find abstracted way to handle these === + #define PROGMEM + #define pgm_read_byte(x) *x + #define memcmp_P(...) memcmp(__VA_ARGS__) + #define memcpy_P(...) memcpy(__VA_ARGS__) + // ================================================= + + typedef uint32_t uint_reg_t; + + #define ARCH_BIG_ENDIAN + + #include "Endianness.h" + #elif (ARCH == ARCH_XMEGA) + #include + #include + #include + #include + #include + #include + + typedef uint8_t uint_reg_t; + + #define ARCH_HAS_EEPROM_ADDRESS_SPACE + #define ARCH_HAS_FLASH_ADDRESS_SPACE + #define ARCH_HAS_MULTI_ADDRESS_SPACE + #define ARCH_LITTLE_ENDIAN + + #include "Endianness.h" + #else + #error Unknown device architecture specified. + #endif + + /* Public Interface - May be used in end-application: */ + /* Macros: */ + /** Macro for encasing other multi-statement macros. This should be used along with an opening brace + * before the start of any multi-statement macro, so that the macros contents as a whole are treated + * as a discrete block and not as a list of separate statements which may cause problems when used as + * a block (such as inline \c if statements). + */ + #define MACROS do + + /** Macro for encasing other multi-statement macros. This should be used along with a preceding closing + * brace at the end of any multi-statement macro, so that the macros contents as a whole are treated + * as a discrete block and not as a list of separate statements which may cause problems when used as + * a block (such as inline \c if statements). + */ + #define MACROE while (0) + + /** Convenience macro to determine the larger of two values. + * + * \attention This macro should only be used with operands that do not have side effects from being evaluated + * multiple times. + * + * \param[in] x First value to compare + * \param[in] y First value to compare + * + * \return The larger of the two input parameters + */ + #if !defined(MAX) || defined(__DOXYGEN__) + #define MAX(x, y) (((x) > (y)) ? (x) : (y)) + #endif + + /** Convenience macro to determine the smaller of two values. + * + * \attention This macro should only be used with operands that do not have side effects from being evaluated + * multiple times. + * + * \param[in] x First value to compare + * \param[in] y First value to compare + * + * \return The smaller of the two input parameters + */ + #if !defined(MIN) || defined(__DOXYGEN__) + #define MIN(x, y) (((x) < (y)) ? (x) : (y)) + #endif + + #if !defined(STRINGIFY) || defined(__DOXYGEN__) + /** Converts the given input into a string, via the C Preprocessor. This macro puts literal quotation + * marks around the input, converting the source into a string literal. + * + * \param[in] x Input to convert into a string literal. + * + * \return String version of the input. + */ + #define STRINGIFY(x) #x + + /** Converts the given input into a string after macro expansion, via the C Preprocessor. This macro puts + * literal quotation marks around the expanded input, converting the source into a string literal. + * + * \param[in] x Input to expand and convert into a string literal. + * + * \return String version of the expanded input. + */ + #define STRINGIFY_EXPANDED(x) STRINGIFY(x) + #endif + + #if !defined(ISR) || defined(__DOXYGEN__) + /** Macro for the definition of interrupt service routines, so that the compiler can insert the required + * prologue and epilogue code to properly manage the interrupt routine without affecting the main thread's + * state with unintentional side-effects. + * + * Interrupt handlers written using this macro may still need to be registered with the microcontroller's + * Interrupt Controller (if present) before they will properly handle incoming interrupt events. + * + * \note This macro is only supplied on some architectures, where the standard library does not include a valid + * definition. If an existing definition exists, the alternative definition here will be ignored. + * + * \ingroup Group_GlobalInt + * + * \param[in] Name Unique name of the interrupt service routine. + */ + #define ISR(Name, ...) void Name (void) __attribute__((__interrupt__)) __VA_ARGS__; void Name (void) + #endif + + /* Inline Functions: */ + /** Function to reverse the individual bits in a byte - i.e. bit 7 is moved to bit 0, bit 6 to bit 1, + * etc. + * + * \param[in] Byte Byte of data whose bits are to be reversed. + * + * \return Input data with the individual bits reversed (mirrored). + */ + static inline uint8_t BitReverse(uint8_t Byte) ATTR_WARN_UNUSED_RESULT ATTR_CONST; + static inline uint8_t BitReverse(uint8_t Byte) + { + Byte = (((Byte & 0xF0) >> 4) | ((Byte & 0x0F) << 4)); + Byte = (((Byte & 0xCC) >> 2) | ((Byte & 0x33) << 2)); + Byte = (((Byte & 0xAA) >> 1) | ((Byte & 0x55) << 1)); + + return Byte; + } + + /** Function to perform a blocking delay for a specified number of milliseconds. The actual delay will be + * at a minimum the specified number of milliseconds, however due to loop overhead and internal calculations + * may be slightly higher. + * + * \param[in] Milliseconds Number of milliseconds to delay + */ + static inline void Delay_MS(uint16_t Milliseconds) ATTR_ALWAYS_INLINE; + static inline void Delay_MS(uint16_t Milliseconds) + { + #if (ARCH == ARCH_AVR8) + if (GCC_IS_COMPILE_CONST(Milliseconds)) + { + _delay_ms(Milliseconds); + } + else + { + while (Milliseconds--) + _delay_ms(1); + } + #elif (ARCH == ARCH_UC3) + while (Milliseconds--) + { + __builtin_mtsr(AVR32_COUNT, 0); + while ((uint32_t)__builtin_mfsr(AVR32_COUNT) < (F_CPU / 1000)); + } + #elif (ARCH == ARCH_XMEGA) + if (GCC_IS_COMPILE_CONST(Milliseconds)) + { + _delay_ms(Milliseconds); + } + else + { + while (Milliseconds--) + _delay_ms(1); + } + #endif + } + + /** Retrieves a mask which contains the current state of the global interrupts for the device. This + * value can be stored before altering the global interrupt enable state, before restoring the + * flag(s) back to their previous values after a critical section using \ref SetGlobalInterruptMask(). + * + * \ingroup Group_GlobalInt + * + * \return Mask containing the current Global Interrupt Enable Mask bit(s). + */ + static inline uint_reg_t GetGlobalInterruptMask(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT; + static inline uint_reg_t GetGlobalInterruptMask(void) + { + GCC_MEMORY_BARRIER(); + + #if (ARCH == ARCH_AVR8) + return SREG; + #elif (ARCH == ARCH_UC3) + return __builtin_mfsr(AVR32_SR); + #elif (ARCH == ARCH_XMEGA) + return SREG; + #endif + } + + /** Sets the global interrupt enable state of the microcontroller to the mask passed into the function. + * This can be combined with \ref GetGlobalInterruptMask() to save and restore the Global Interrupt Enable + * Mask bit(s) of the device after a critical section has completed. + * + * \ingroup Group_GlobalInt + * + * \param[in] GlobalIntState Global Interrupt Enable Mask value to use + */ + static inline void SetGlobalInterruptMask(const uint_reg_t GlobalIntState) ATTR_ALWAYS_INLINE; + static inline void SetGlobalInterruptMask(const uint_reg_t GlobalIntState) + { + GCC_MEMORY_BARRIER(); + + #if (ARCH == ARCH_AVR8) + SREG = GlobalIntState; + #elif (ARCH == ARCH_UC3) + if (GlobalIntState & AVR32_SR_GM) + __builtin_ssrf(AVR32_SR_GM_OFFSET); + else + __builtin_csrf(AVR32_SR_GM_OFFSET); + #elif (ARCH == ARCH_XMEGA) + SREG = GlobalIntState; + #endif + + GCC_MEMORY_BARRIER(); + } + + /** Enables global interrupt handling for the device, allowing interrupts to be handled. + * + * \ingroup Group_GlobalInt + */ + static inline void GlobalInterruptEnable(void) ATTR_ALWAYS_INLINE; + static inline void GlobalInterruptEnable(void) + { + GCC_MEMORY_BARRIER(); + + #if (ARCH == ARCH_AVR8) + sei(); + #elif (ARCH == ARCH_UC3) + __builtin_csrf(AVR32_SR_GM_OFFSET); + #elif (ARCH == ARCH_XMEGA) + sei(); + #endif + + GCC_MEMORY_BARRIER(); + } + + /** Disabled global interrupt handling for the device, preventing interrupts from being handled. + * + * \ingroup Group_GlobalInt + */ + static inline void GlobalInterruptDisable(void) ATTR_ALWAYS_INLINE; + static inline void GlobalInterruptDisable(void) + { + GCC_MEMORY_BARRIER(); + + #if (ARCH == ARCH_AVR8) + cli(); + #elif (ARCH == ARCH_UC3) + __builtin_ssrf(AVR32_SR_GM_OFFSET); + #elif (ARCH == ARCH_XMEGA) + cli(); + #endif + + GCC_MEMORY_BARRIER(); + } + + /* Disable C linkage for C++ Compilers: */ + #if defined(__cplusplus) + } + #endif + +#endif + +/** @} */ + -- cgit v1.2.3