/*
LUFA Library
- Copyright (C) Dean Camera, 2011.
+ Copyright (C) Dean Camera, 2012.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ 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
#if !defined(__INCLUDE_FROM_COMMON_H)
#error Do not include this file directly. Include LUFA/Common/Common.h instead to gain this functionality.
#endif
-
+
#if !(defined(ARCH_BIG_ENDIAN) || defined(ARCH_LITTLE_ENDIAN))
#error ARCH_BIG_ENDIAN or ARCH_LITTLE_ENDIAN not set for the specified architecture.
#endif
#if defined(ARCH_BIG_ENDIAN) && !defined(le16_to_cpu)
#define le16_to_cpu(x) SwapEndian_16(x)
#define le32_to_cpu(x) SwapEndian_32(x)
- #define be16_to_cpu(x) x
- #define be32_to_cpu(x) x
+ #define be16_to_cpu(x) (x)
+ #define be32_to_cpu(x) (x)
#define cpu_to_le16(x) SwapEndian_16(x)
#define cpu_to_le32(x) SwapEndian_32(x)
- #define cpu_to_be16(x) x
- #define cpu_to_be32(x) x
+ #define cpu_to_be16(x) (x)
+ #define cpu_to_be32(x) (x)
#define LE16_TO_CPU(x) SWAPENDIAN_16(x)
#define LE32_TO_CPU(x) SWAPENDIAN_32(x)
- #define BE16_TO_CPU(x) x
- #define BE32_TO_CPU(x) x
+ #define BE16_TO_CPU(x) (x)
+ #define BE32_TO_CPU(x) (x)
#define CPU_TO_LE16(x) SWAPENDIAN_16(x)
#define CPU_TO_LE32(x) SWAPENDIAN_32(x)
- #define CPU_TO_BE16(x) x
- #define CPU_TO_BE32(x) x
+ #define CPU_TO_BE16(x) (x)
+ #define CPU_TO_BE32(x) (x)
#elif !defined(le16_to_cpu)
/** \name Run-time endianness conversion */
//@{
-
+
/** Performs a conversion between a Little Endian encoded 16-bit piece of data and the
* Endianness of the currently selected CPU architecture.
*
*
* \return Endian corrected version of the input value.
*/
- #define le16_to_cpu(x) x
+ #define le16_to_cpu(x) (x)
/** Performs a conversion between a Little Endian encoded 32-bit piece of data and the
* Endianness of the currently selected CPU architecture.
*
* \return Endian corrected version of the input value.
*/
- #define le32_to_cpu(x) x
+ #define le32_to_cpu(x) (x)
/** Performs a conversion between a Big Endian encoded 16-bit piece of data and the
* Endianness of the currently selected CPU architecture.
*
* \return Endian corrected version of the input value.
*/
- #define cpu_to_le16(x) x
+ #define cpu_to_le16(x) (x)
/** Performs a conversion on a natively encoded 32-bit piece of data to ensure that it
* is in Little Endian format regardless of the currently selected CPU architecture.
*
* \return Endian corrected version of the input value.
*/
- #define cpu_to_le32(x) x
+ #define cpu_to_le32(x) (x)
/** Performs a conversion on a natively encoded 16-bit piece of data to ensure that it
* is in Big Endian format regardless of the currently selected CPU architecture.
*
* \return Endian corrected version of the input value.
*/
- #define LE16_TO_CPU(x) x
+ #define LE16_TO_CPU(x) (x)
/** Performs a conversion between a Little Endian encoded 32-bit piece of data and the
* Endianness of the currently selected CPU architecture.
*
* \return Endian corrected version of the input value.
*/
- #define LE32_TO_CPU(x) x
+ #define LE32_TO_CPU(x) (x)
/** Performs a conversion between a Big Endian encoded 16-bit piece of data and the
* Endianness of the currently selected CPU architecture.
*
* \return Endian corrected version of the input value.
*/
- #define CPU_TO_LE16(x) x
+ #define CPU_TO_LE16(x) (x)
/** Performs a conversion on a natively encoded 32-bit piece of data to ensure that it
* is in Little Endian format regardless of the currently selected CPU architecture.
*
* \return Endian corrected version of the input value.
*/
- #define CPU_TO_LE32(x) x
+ #define CPU_TO_LE32(x) (x)
/** Performs a conversion on a natively encoded 16-bit piece of data to ensure that it
* is in Big Endian format regardless of the currently selected CPU architecture.
* \ingroup Group_ByteSwapping
*
* \param[in] Word Word of data whose bytes are to be swapped.
+ *
+ * \return Input data with the individual bytes reversed.
*/
static inline uint16_t SwapEndian_16(const uint16_t Word) ATTR_WARN_UNUSED_RESULT ATTR_CONST;
static inline uint16_t SwapEndian_16(const uint16_t Word)
{
if (GCC_IS_COMPILE_CONST(Word))
return SWAPENDIAN_16(Word);
-
+
uint8_t Temp;
union
* \ingroup Group_ByteSwapping
*
* \param[in] DWord Double word of data whose bytes are to be swapped.
+ *
+ * \return Input data with the individual bytes reversed.
*/
static inline uint32_t SwapEndian_32(const uint32_t DWord) ATTR_WARN_UNUSED_RESULT ATTR_CONST;
static inline uint32_t SwapEndian_32(const uint32_t DWord)
*
* \param[in,out] Data Pointer to a number containing an even number of bytes to be reversed.
* \param[in] Length Length of the data in bytes.
+ *
+ * \return Input data with the individual bytes reversed.
*/
static inline void SwapEndian_n(void* const Data,
uint8_t Length) ATTR_NON_NULL_PTR_ARG(1);
#endif
/** @} */
+
projects / pub / USBasp.git / blobdiff