Add svn:eol-style property to source files, so that the line endings are correctly converted to the target system's native end of line style.

This commit is contained in:
Dean Camera 2010-05-08 03:12:14 +00:00
parent e331b531c6
commit 071e02c6b6
839 changed files with 274562 additions and 274562 deletions

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@ -1,138 +1,138 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 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.
*/
/** \file
* \brief AVR-GCC special function/variable attribute macros.
*
* This file contains macros for applying GCC specific attributes to functions and variables to control various
* optimizer and code generation features of the compiler. Attributes may be placed in the function prototype
* or variable declaration in any order, and multiple attributes can be specified for a single item via a space
* separated list.
*
* On incompatible versions of GCC or on other compilers, these macros evaluate to nothing unless they are
* critical to the code's function and thus must throw a compiler error when used.
*
* \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_GCCAttr Function/Variable Attributes
*
* Macros for easy access GCC function and variable attributes, which can be applied to function prototypes or
* variable attributes.
*
* @{
*/
#ifndef __FUNCATTR_H__
#define __FUNCATTR_H__
/* Preprocessor Checks: */
#if !defined(__COMMON_H__)
#error Do not include this file directly. Include LUFA/Common/Common.h instead to gain this functionality.
#endif
/* Public Interface - May be used in end-application: */
/* Macros: */
#if (__GNUC__ >= 3) || defined(__DOXYGEN__)
/** Indicates to the compiler that the function can not ever return, so that any stack restoring or
* return code may be omitted by the compiler in the resulting binary.
*/
#define ATTR_NO_RETURN __attribute__ ((noreturn))
/** Indicates that the function returns a value which should not be ignored by the user code. When
* applied, any ignored return value from calling the function will produce a compiler warning.
*/
#define ATTR_WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
/** Indicates that the specified parameters of the function are pointers which should never be NULL.
* When applied as a 1-based comma separated list the compiler will emit a warning if the specified
* parameters are known at compiler time to be NULL at the point of calling the function.
*/
#define ATTR_NON_NULL_PTR_ARG(...) __attribute__ ((nonnull (__VA_ARGS__)))
/** Removes any preamble or postamble from the function. When used, the function will not have any
* register or stack saving code. This should be used with caution, and when used the programmer
* is responsible for maintaining stack and register integrity.
*/
#define ATTR_NAKED __attribute__ ((naked))
/** Prevents the compiler from considering a specified function for inlining. When applied, the given
* function will not be inlined under any circumstances.
*/
#define ATTR_NO_INLINE __attribute__ ((noinline))
/** Forces the compiler to inline the specified function. When applied, the given function will be
* inlined under all circumstances.
*/
#define ATTR_ALWAYS_INLINE __attribute__ ((always_inline))
/** Indicates that the specified function is pure, in that it has no side-effects other than global
* or parameter variable access.
*/
#define ATTR_PURE __attribute__ ((pure))
/** Indicates that the specified function is constant, in that it has no side effects other than
* parameter access.
*/
#define ATTR_CONST __attribute__ ((const))
/** Marks a given function as deprecated, which produces a warning if the function is called. */
#define ATTR_DEPRECATED __attribute__ ((deprecated))
/** Marks a function as a weak reference, which can be overridden by other functions with an
* identical name (in which case the weak reference is discarded at link time).
*/
#define ATTR_WEAK __attribute__ ((weak))
/** Forces the compiler to not automatically zero the given global variable on startup, so that the
* current RAM contents is retained. Under most conditions this value will be random due to the
* behaviour of volatile memory once power is removed, but may be used in some specific circumstances,
* like the passing of values back after a system watchdog reset.
*/
#define ATTR_NO_INIT __attribute__ ((section (".noinit")))
#endif
/** Places the function in one of the initialization sections, which execute before the main function
* of the application. Refer to the avr-libc manual for more information on the initialization sections.
*
* \param[in] x Initialization section number where the function should be placed
*/
#define ATTR_INIT_SECTION(x) __attribute__ ((naked, section (".init" #x )))
/** Marks a function as an alias for another function.
*
* \param[in] x Name of the function which the given function name should alias
*/
#define ATTR_ALIAS(x) __attribute__ ((alias( #x )))
#endif
/** @} */
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 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.
*/
/** \file
* \brief AVR-GCC special function/variable attribute macros.
*
* This file contains macros for applying GCC specific attributes to functions and variables to control various
* optimizer and code generation features of the compiler. Attributes may be placed in the function prototype
* or variable declaration in any order, and multiple attributes can be specified for a single item via a space
* separated list.
*
* On incompatible versions of GCC or on other compilers, these macros evaluate to nothing unless they are
* critical to the code's function and thus must throw a compiler error when used.
*
* \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_GCCAttr Function/Variable Attributes
*
* Macros for easy access GCC function and variable attributes, which can be applied to function prototypes or
* variable attributes.
*
* @{
*/
#ifndef __FUNCATTR_H__
#define __FUNCATTR_H__
/* Preprocessor Checks: */
#if !defined(__COMMON_H__)
#error Do not include this file directly. Include LUFA/Common/Common.h instead to gain this functionality.
#endif
/* Public Interface - May be used in end-application: */
/* Macros: */
#if (__GNUC__ >= 3) || defined(__DOXYGEN__)
/** Indicates to the compiler that the function can not ever return, so that any stack restoring or
* return code may be omitted by the compiler in the resulting binary.
*/
#define ATTR_NO_RETURN __attribute__ ((noreturn))
/** Indicates that the function returns a value which should not be ignored by the user code. When
* applied, any ignored return value from calling the function will produce a compiler warning.
*/
#define ATTR_WARN_UNUSED_RESULT __attribute__ ((warn_unused_result))
/** Indicates that the specified parameters of the function are pointers which should never be NULL.
* When applied as a 1-based comma separated list the compiler will emit a warning if the specified
* parameters are known at compiler time to be NULL at the point of calling the function.
*/
#define ATTR_NON_NULL_PTR_ARG(...) __attribute__ ((nonnull (__VA_ARGS__)))
/** Removes any preamble or postamble from the function. When used, the function will not have any
* register or stack saving code. This should be used with caution, and when used the programmer
* is responsible for maintaining stack and register integrity.
*/
#define ATTR_NAKED __attribute__ ((naked))
/** Prevents the compiler from considering a specified function for inlining. When applied, the given
* function will not be inlined under any circumstances.
*/
#define ATTR_NO_INLINE __attribute__ ((noinline))
/** Forces the compiler to inline the specified function. When applied, the given function will be
* inlined under all circumstances.
*/
#define ATTR_ALWAYS_INLINE __attribute__ ((always_inline))
/** Indicates that the specified function is pure, in that it has no side-effects other than global
* or parameter variable access.
*/
#define ATTR_PURE __attribute__ ((pure))
/** Indicates that the specified function is constant, in that it has no side effects other than
* parameter access.
*/
#define ATTR_CONST __attribute__ ((const))
/** Marks a given function as deprecated, which produces a warning if the function is called. */
#define ATTR_DEPRECATED __attribute__ ((deprecated))
/** Marks a function as a weak reference, which can be overridden by other functions with an
* identical name (in which case the weak reference is discarded at link time).
*/
#define ATTR_WEAK __attribute__ ((weak))
/** Forces the compiler to not automatically zero the given global variable on startup, so that the
* current RAM contents is retained. Under most conditions this value will be random due to the
* behaviour of volatile memory once power is removed, but may be used in some specific circumstances,
* like the passing of values back after a system watchdog reset.
*/
#define ATTR_NO_INIT __attribute__ ((section (".noinit")))
#endif
/** Places the function in one of the initialization sections, which execute before the main function
* of the application. Refer to the avr-libc manual for more information on the initialization sections.
*
* \param[in] x Initialization section number where the function should be placed
*/
#define ATTR_INIT_SECTION(x) __attribute__ ((naked, section (".init" #x )))
/** Marks a function as an alias for another function.
*
* \param[in] x Name of the function which the given function name should alias
*/
#define ATTR_ALIAS(x) __attribute__ ((alias( #x )))
#endif
/** @} */

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@ -1,120 +1,120 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 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.
*/
/** \file
* \brief Supported board hardware defines.
*
* This file contains constants which can be passed to the compiler (via setting the macro BOARD) in the
* user project makefile using the -D option to configure the library board-specific drivers.
*
* \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_BoardTypes Board Types
*
* Macros for indicating the chosen physical board hardware to the library. These macros should be used when
* defining the BOARD token to the chosen hardware via the -D switch in the project makefile.
*
* @{
*/
#ifndef __BOARDTYPES_H__
#define __BOARDTYPES_H__
/* Preprocessor Checks: */
#if !defined(__COMMON_H__)
#error Do not include this file directly. Include LUFA/Common/Common.h instead to gain this functionality.
#endif
/* Public Interface - May be used in end-application: */
/* Macros: */
/** Selects the USBKEY specific board drivers, including Temperature, Button, Dataflash, Joystick and LED drivers. */
#define BOARD_USBKEY 0
/** Selects the STK525 specific board drivers, including Temperature, Button, Dataflash, Joystick and LED drivers. */
#define BOARD_STK525 1
/** Selects the STK526 specific board drivers, including Temperature, Button, Dataflash, Joystick and LED drivers. */
#define BOARD_STK526 2
/** Selects the RZUSBSTICK specific board drivers, including the driver for the boards LEDs. */
#define BOARD_RZUSBSTICK 3
/** Selects the ATAVRUSBRF01 specific board drivers, including the driver for the board LEDs. */
#define BOARD_ATAVRUSBRF01 4
/** Selects the user-defined board drivers, which should be placed in the user project's folder
* under a directory named /Board/. Each board driver should be named identically to the LUFA
* master board driver (i.e., driver in the LUFA/Drivers/Board director) so that the library
* can correctly identify it.
*/
#define BOARD_USER 5
/** Selects the BUMBLEB specific board drivers, using the officially recommended peripheral layout. */
#define BOARD_BUMBLEB 6
/** Selects the XPLAIN (Revision 2 or newer) specific board drivers, including LED and Dataflash driver. */
#define BOARD_XPLAIN 7
/** Selects the XPLAIN (Revision 1) specific board drivers, including LED and Dataflash driver. */
#define BOARD_XPLAIN_REV1 8
/** Selects the EVK527 specific board drivers, including Temperature, Button, Dataflash, Joystick and LED drivers. */
#define BOARD_EVK527 9
/** Disables board drivers when operation will not be adversely affected (e.g. LEDs) - use of board drivers
* such as the Joystick driver, where the removal would adversely affect the code's operation is still disallowed. */
#define BOARD_NONE 10
/** Selects the Teensy (all versions) specific board drivers, including the driver for the board LEDs. */
#define BOARD_TEENSY 11
/** Selects the USBTINY MKII specific board drivers, including the Button and LEDs drivers. */
#define BOARD_USBTINYMKII 12
/** Selects the Benito specific board drivers, including the Button and LEDs drivers. */
#define BOARD_BENITO 13
/** Selects the JM-DB-U2 specific board drivers, including the Button and LEDs drivers. */
#define BOARD_JMDBU2 14
#if !defined(__DOXYGEN__)
#define BOARD_ BOARD_NONE
#if !defined(BOARD)
#define BOARD BOARD_NONE
#endif
#endif
#endif
/** @} */
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 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.
*/
/** \file
* \brief Supported board hardware defines.
*
* This file contains constants which can be passed to the compiler (via setting the macro BOARD) in the
* user project makefile using the -D option to configure the library board-specific drivers.
*
* \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_BoardTypes Board Types
*
* Macros for indicating the chosen physical board hardware to the library. These macros should be used when
* defining the BOARD token to the chosen hardware via the -D switch in the project makefile.
*
* @{
*/
#ifndef __BOARDTYPES_H__
#define __BOARDTYPES_H__
/* Preprocessor Checks: */
#if !defined(__COMMON_H__)
#error Do not include this file directly. Include LUFA/Common/Common.h instead to gain this functionality.
#endif
/* Public Interface - May be used in end-application: */
/* Macros: */
/** Selects the USBKEY specific board drivers, including Temperature, Button, Dataflash, Joystick and LED drivers. */
#define BOARD_USBKEY 0
/** Selects the STK525 specific board drivers, including Temperature, Button, Dataflash, Joystick and LED drivers. */
#define BOARD_STK525 1
/** Selects the STK526 specific board drivers, including Temperature, Button, Dataflash, Joystick and LED drivers. */
#define BOARD_STK526 2
/** Selects the RZUSBSTICK specific board drivers, including the driver for the boards LEDs. */
#define BOARD_RZUSBSTICK 3
/** Selects the ATAVRUSBRF01 specific board drivers, including the driver for the board LEDs. */
#define BOARD_ATAVRUSBRF01 4
/** Selects the user-defined board drivers, which should be placed in the user project's folder
* under a directory named /Board/. Each board driver should be named identically to the LUFA
* master board driver (i.e., driver in the LUFA/Drivers/Board director) so that the library
* can correctly identify it.
*/
#define BOARD_USER 5
/** Selects the BUMBLEB specific board drivers, using the officially recommended peripheral layout. */
#define BOARD_BUMBLEB 6
/** Selects the XPLAIN (Revision 2 or newer) specific board drivers, including LED and Dataflash driver. */
#define BOARD_XPLAIN 7
/** Selects the XPLAIN (Revision 1) specific board drivers, including LED and Dataflash driver. */
#define BOARD_XPLAIN_REV1 8
/** Selects the EVK527 specific board drivers, including Temperature, Button, Dataflash, Joystick and LED drivers. */
#define BOARD_EVK527 9
/** Disables board drivers when operation will not be adversely affected (e.g. LEDs) - use of board drivers
* such as the Joystick driver, where the removal would adversely affect the code's operation is still disallowed. */
#define BOARD_NONE 10
/** Selects the Teensy (all versions) specific board drivers, including the driver for the board LEDs. */
#define BOARD_TEENSY 11
/** Selects the USBTINY MKII specific board drivers, including the Button and LEDs drivers. */
#define BOARD_USBTINYMKII 12
/** Selects the Benito specific board drivers, including the Button and LEDs drivers. */
#define BOARD_BENITO 13
/** Selects the JM-DB-U2 specific board drivers, including the Button and LEDs drivers. */
#define BOARD_JMDBU2 14
#if !defined(__DOXYGEN__)
#define BOARD_ BOARD_NONE
#if !defined(BOARD)
#define BOARD BOARD_NONE
#endif
#endif
#endif
/** @} */

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@ -1,185 +1,185 @@
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 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.
*/
/** \file
* \brief Common library convenience macros and functions.
*
* This file contains macros which are common to all library elements, and which may be useful in user code. It
* also includes other common headers, such as Atomic.h, Attributes.h and BoardTypes.h.
*/
/** @defgroup Group_Common Common Utility Headers - LUFA/Drivers/Common/Common.h
*
* Common utility headers containing macros, functions, enums and types which are common to all
* aspects of the library.
*
* @{
*/
/** @defgroup Group_Debugging Debugging Macros
*
* Macros for debugging use.
*/
/** @defgroup Group_BitManip Endian and Bit Macros
*
* Functions for swapping endianness and reversing bit orders.
*/
#ifndef __COMMON_H__
#define __COMMON_H__
/* Includes: */
#include <avr/io.h>
#include "Attributes.h"
#include "BoardTypes.h"
/* 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 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 IF statements).
*/
#define MACROE while (0)
/** Defines a volatile 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.
*
* \ingroup Group_Debugging
*/
#define JTAG_DEBUG_POINT() asm volatile ("NOP" ::)
/** Defines an explicit JTAG break point in the resulting binary via the ASM BREAK statement. When
* a JTAG is used, this causes the program execution to halt when reached until manually resumed.
*
* \ingroup Group_Debugging
*/
#define JTAG_DEBUG_BREAK() asm volatile ("BREAK" ::)
/** Macro for testing condition "x" and breaking via JTAG_DEBUG_BREAK() if the condition is false.
*
* \ingroup Group_Debugging
*/
#define JTAG_DEBUG_ASSERT(x) MACROS{ if (!(x)) { JTAG_DEBUG_BREAK(); } }MACROE
/** Macro for testing condition "x" and writing debug data to the serial stream if false. As a
* prerequisite for this macro, the serial stream should be configured via the Peripheral/SerialStream driver.
*
* The serial output takes the form "{FILENAME}: Function {FUNCTION NAME}, Line {LINE NUMBER}: Assertion
* {x} failed."
*
* \ingroup Group_Debugging
*/
#define SERIAL_STREAM_ASSERT(x) MACROS{ if (!(x)) { printf_P(PSTR("%s: Function \"%s\", Line %d: " \
"Assertion \"%s\" failed.\r\n"), \
__FILE__, __func__, __LINE__, #x); \
} }MACROE
/* 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.
*
* \ingroup Group_BitManip
*
* \param[in] Byte Byte of data whose bits are to be reversed
*/
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 reverse the byte ordering of the individual bytes in a 16 bit number.
*
* \ingroup Group_BitManip
*
* \param[in] Word Word of data whose bytes are to be swapped
*/
static inline uint16_t SwapEndian_16(uint16_t Word) ATTR_WARN_UNUSED_RESULT ATTR_CONST;
static inline uint16_t SwapEndian_16(uint16_t Word)
{
return ((Word >> 8) | (Word << 8));
}
/** Function to reverse the byte ordering of the individual bytes in a 32 bit number.
*
* \ingroup Group_BitManip
*
* \param[in] DWord Double word of data whose bytes are to be swapped
*/
static inline uint32_t SwapEndian_32(uint32_t DWord) ATTR_WARN_UNUSED_RESULT ATTR_CONST;
static inline uint32_t SwapEndian_32(uint32_t DWord)
{
return (((DWord & 0xFF000000) >> 24) |
((DWord & 0x00FF0000) >> 8) |
((DWord & 0x0000FF00) << 8) |
((DWord & 0x000000FF) << 24));
}
/** Function to reverse the byte ordering of the individual bytes in a n byte number.
*
* \ingroup Group_BitManip
*
* \param[in,out] Data Pointer to a number containing an even number of bytes to be reversed
* \param[in] Bytes Length of the data in bytes
*/
static inline void SwapEndian_n(void* Data, uint8_t Bytes);
static inline void SwapEndian_n(void* Data, uint8_t Bytes)
{
uint8_t* CurrDataPos = Data;
while (Bytes)
{
uint8_t Temp = *CurrDataPos;
*CurrDataPos = *(CurrDataPos + Bytes - 1);
*(CurrDataPos + Bytes - 1) = Temp;
CurrDataPos++;
Bytes -= 2;
}
}
#endif
/** @} */
/*
LUFA Library
Copyright (C) Dean Camera, 2010.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2010 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.
*/
/** \file
* \brief Common library convenience macros and functions.
*
* This file contains macros which are common to all library elements, and which may be useful in user code. It
* also includes other common headers, such as Atomic.h, Attributes.h and BoardTypes.h.
*/
/** @defgroup Group_Common Common Utility Headers - LUFA/Drivers/Common/Common.h
*
* Common utility headers containing macros, functions, enums and types which are common to all
* aspects of the library.
*
* @{
*/
/** @defgroup Group_Debugging Debugging Macros
*
* Macros for debugging use.
*/
/** @defgroup Group_BitManip Endian and Bit Macros
*
* Functions for swapping endianness and reversing bit orders.
*/
#ifndef __COMMON_H__
#define __COMMON_H__
/* Includes: */
#include <avr/io.h>
#include "Attributes.h"
#include "BoardTypes.h"
/* 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 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 IF statements).
*/
#define MACROE while (0)
/** Defines a volatile 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.
*
* \ingroup Group_Debugging
*/
#define JTAG_DEBUG_POINT() asm volatile ("NOP" ::)
/** Defines an explicit JTAG break point in the resulting binary via the ASM BREAK statement. When
* a JTAG is used, this causes the program execution to halt when reached until manually resumed.
*
* \ingroup Group_Debugging
*/
#define JTAG_DEBUG_BREAK() asm volatile ("BREAK" ::)
/** Macro for testing condition "x" and breaking via JTAG_DEBUG_BREAK() if the condition is false.
*
* \ingroup Group_Debugging
*/
#define JTAG_DEBUG_ASSERT(x) MACROS{ if (!(x)) { JTAG_DEBUG_BREAK(); } }MACROE
/** Macro for testing condition "x" and writing debug data to the serial stream if false. As a
* prerequisite for this macro, the serial stream should be configured via the Peripheral/SerialStream driver.
*
* The serial output takes the form "{FILENAME}: Function {FUNCTION NAME}, Line {LINE NUMBER}: Assertion
* {x} failed."
*
* \ingroup Group_Debugging
*/
#define SERIAL_STREAM_ASSERT(x) MACROS{ if (!(x)) { printf_P(PSTR("%s: Function \"%s\", Line %d: " \
"Assertion \"%s\" failed.\r\n"), \
__FILE__, __func__, __LINE__, #x); \
} }MACROE
/* 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.
*
* \ingroup Group_BitManip
*
* \param[in] Byte Byte of data whose bits are to be reversed
*/
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 reverse the byte ordering of the individual bytes in a 16 bit number.
*
* \ingroup Group_BitManip
*
* \param[in] Word Word of data whose bytes are to be swapped
*/
static inline uint16_t SwapEndian_16(uint16_t Word) ATTR_WARN_UNUSED_RESULT ATTR_CONST;
static inline uint16_t SwapEndian_16(uint16_t Word)
{
return ((Word >> 8) | (Word << 8));
}
/** Function to reverse the byte ordering of the individual bytes in a 32 bit number.
*
* \ingroup Group_BitManip
*
* \param[in] DWord Double word of data whose bytes are to be swapped
*/
static inline uint32_t SwapEndian_32(uint32_t DWord) ATTR_WARN_UNUSED_RESULT ATTR_CONST;
static inline uint32_t SwapEndian_32(uint32_t DWord)
{
return (((DWord & 0xFF000000) >> 24) |
((DWord & 0x00FF0000) >> 8) |
((DWord & 0x0000FF00) << 8) |
((DWord & 0x000000FF) << 24));
}
/** Function to reverse the byte ordering of the individual bytes in a n byte number.
*
* \ingroup Group_BitManip
*
* \param[in,out] Data Pointer to a number containing an even number of bytes to be reversed
* \param[in] Bytes Length of the data in bytes
*/
static inline void SwapEndian_n(void* Data, uint8_t Bytes);
static inline void SwapEndian_n(void* Data, uint8_t Bytes)
{
uint8_t* CurrDataPos = Data;
while (Bytes)
{
uint8_t Temp = *CurrDataPos;
*CurrDataPos = *(CurrDataPos + Bytes - 1);
*(CurrDataPos + Bytes - 1) = Temp;
CurrDataPos++;
Bytes -= 2;
}
}
#endif
/** @} */