-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2009.\r
- \r
- dean [at] fourwalledcubicle [dot] com\r
- www.fourwalledcubicle.com\r
-*/\r
-\r
-/*\r
- Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
- Permission to use, copy, modify, and distribute this software\r
- and its documentation for any purpose and without fee is hereby\r
- granted, provided that the above copyright notice appear in all\r
- copies and that both that the copyright notice and this\r
- permission notice and warranty disclaimer appear in supporting\r
- documentation, and that the name of the author not be used in\r
- advertising or publicity pertaining to distribution of the\r
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
-\r
-/** \file\r
- *\r
- * This file contains macros which are common to all library elements, and which may be useful in user code. It\r
- * also includes other common headers, such as Atomic.h, FunctionAttributes.h and BoardTypes.h.\r
- */\r
- \r
-/** @defgroup Group_Common Common Utility Headers - LUFA/Drivers/Common/Common.h\r
- *\r
- * Common utility headers containing macros, functions, enums and types which are common to all\r
- * aspects of the library.\r
- *\r
- * @{\r
- */\r
-\r
-/** @defgroup Group_Debugging Debugging Macros\r
- *\r
- * Macros for debugging use.\r
- */\r
- \r
-/** @defgroup Group_BitManip Endian and Bit Macros\r
- *\r
- * Functions for swapping endianness and reversing bit orders.\r
- */\r
-\r
-#ifndef __COMMON_H__\r
-#define __COMMON_H__\r
-\r
- /* Includes: */\r
- #include <avr/io.h>\r
- #include <stdio.h>\r
- #include <avr/version.h>\r
- \r
- #include "FunctionAttributes.h"\r
- #include "BoardTypes.h"\r
- \r
- #include <alloca.h>\r
-\r
- /* Public Interface - May be used in end-application: */\r
- /* Macros: */ \r
- /** Macro for encasing other multi-statement macros. This should be used along with an opening brace\r
- * before the start of any multi-statement macro, so that the macros contents as a whole are treated\r
- * as a discrete block and not as a list of separate statements which may cause problems when used as\r
- * a block (such as inline IF statements).\r
- */\r
- #define MACROS do\r
-\r
- /** Macro for encasing other multi-statement macros. This should be used along with a preceding closing\r
- * brace at the end of any multi-statement macro, so that the macros contents as a whole are treated\r
- * as a discrete block and not as a list of separate statements which may cause problems when used as\r
- * a block (such as inline IF statements).\r
- */\r
- #define MACROE while (0)\r
- \r
- /** Defines a volatile NOP statement which cannot be optimized out by the compiler, and thus can always\r
- * be set as a breakpoint in the resulting code. Useful for debugging purposes, where the optimizer\r
- * removes/reorders code to the point where break points cannot reliably be set.\r
- *\r
- * \ingroup Group_Debugging\r
- */\r
- #define JTAG_DEBUG_POINT() asm volatile ("NOP" ::)\r
-\r
- /** Defines an explicit JTAG break point in the resulting binary via the ASM BREAK statement. When\r
- * a JTAG is used, this causes the program execution to halt when reached until manually resumed.\r
- *\r
- * \ingroup Group_Debugging\r
- */\r
- #define JTAG_DEBUG_BREAK() asm volatile ("BREAK" ::)\r
- \r
- /** Macro for testing condition "x" and breaking via JTAG_DEBUG_BREAK() if the condition is false.\r
- *\r
- * \ingroup Group_Debugging\r
- */\r
- #define JTAG_DEBUG_ASSERT(x) MACROS{ if (!(x)) { JTAG_DEBUG_BREAK(); } }MACROE\r
-\r
- /** Macro for testing condition "x" and writing debug data to the serial stream if false. As a\r
- * prerequisite for this macro, the serial stream should be configured via the Peripheral/SerialStream driver.\r
- *\r
- * The serial output takes the form "{FILENAME}: Function {FUNCTION NAME}, Line {LINE NUMBER}: Assertion\r
- * {x} failed."\r
- *\r
- * \ingroup Group_Debugging\r
- */\r
- #define SERIAL_STREAM_ASSERT(x) MACROS{ if (!(x)) { printf_P(PSTR("%s: Function \"%s\", Line %d: " \\r
- "Assertion \"%s\" failed.\r\n"), \\r
- __FILE__, __func__, __LINE__, #x); \\r
- } }MACROE\r
-\r
- /* Inline Functions: */\r
- /** Function to reverse the individual bits in a byte - i.e. bit 7 is moved to bit 0, bit 6 to bit 1,\r
- * etc.\r
- *\r
- * \ingroup Group_BitManip\r
- *\r
- * \param Byte Byte of data whose bits are to be reversed\r
- */\r
- static inline uint8_t BitReverse(uint8_t Byte) ATTR_WARN_UNUSED_RESULT ATTR_CONST;\r
- static inline uint8_t BitReverse(uint8_t Byte)\r
- {\r
- Byte = (((Byte & 0xF0) >> 4) | ((Byte & 0x0F) << 4));\r
- Byte = (((Byte & 0xCC) >> 2) | ((Byte & 0x33) << 2));\r
- Byte = (((Byte & 0xAA) >> 1) | ((Byte & 0x55) << 1));\r
-\r
- return Byte;\r
- }\r
- \r
- /** Function to reverse the byte ordering of the individual bytes in a 16 bit number.\r
- *\r
- * \ingroup Group_BitManip\r
- *\r
- * \param Word Word of data whose bytes are to be swapped\r
- */\r
- static inline uint16_t SwapEndian_16(uint16_t Word) ATTR_WARN_UNUSED_RESULT ATTR_CONST;\r
- static inline uint16_t SwapEndian_16(uint16_t Word)\r
- {\r
- return ((Word >> 8) | (Word << 8)); \r
- }\r
-\r
- /** Function to reverse the byte ordering of the individual bytes in a 32 bit number.\r
- *\r
- * \ingroup Group_BitManip\r
- *\r
- * \param DWord Double word of data whose bytes are to be swapped\r
- */\r
- static inline uint32_t SwapEndian_32(uint32_t DWord) ATTR_WARN_UNUSED_RESULT ATTR_CONST;\r
- static inline uint32_t SwapEndian_32(uint32_t DWord)\r
- {\r
- return (((DWord & 0xFF000000) >> 24) |\r
- ((DWord & 0x00FF0000) >> 8) |\r
- ((DWord & 0x0000FF00) << 8) |\r
- ((DWord & 0x000000FF) << 24));\r
- }\r
-\r
- /** Function to reverse the byte ordering of the individual bytes in a n byte number.\r
- *\r
- * \ingroup Group_BitManip\r
- *\r
- * \param Data Pointer to a number containing an even number of bytes to be reversed\r
- * \param Bytes Length of the data in bytes\r
- */\r
- static inline void SwapEndian_n(uint8_t* Data, uint8_t Bytes);\r
- static inline void SwapEndian_n(uint8_t* Data, uint8_t Bytes)\r
- {\r
- uint8_t Temp;\r
- \r
- while (Bytes)\r
- {\r
- Temp = *Data;\r
- *Data = *(Data + Bytes - 1);\r
- *(Data + Bytes) = Temp;\r
-\r
- Data++;\r
- Bytes -= 2;\r
- }\r
- }\r
-\r
-#endif\r
-\r
-/** @} */\r
+/*
+ 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 <stdint.h>
+ #include <stdbool.h>
+ #include <string.h>
+ #include <stddef.h>
+
+ #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 <avr/io.h>
+ #include <avr/interrupt.h>
+ #include <avr/pgmspace.h>
+ #include <avr/eeprom.h>
+ #include <avr/boot.h>
+ #include <math.h>
+ #include <util/delay.h>
+
+ 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 <avr32/io.h>
+ #include <math.h>
+
+ // === 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 <avr/io.h>
+ #include <avr/interrupt.h>
+ #include <avr/pgmspace.h>
+ #include <avr/eeprom.h>
+ #include <math.h>
+ #include <util/delay.h>
+
+ 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
+
+/** @} */
+
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