110 lines
3.9 KiB
C
110 lines
3.9 KiB
C
/***************************************************************************//**
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* @file
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* @brief EFM32 general purpose utilities.
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* @author Energy Micro AS
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* @version 2.3.0
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*******************************************************************************
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* @section License
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* <b>(C) Copyright 2011 Energy Micro AS, http://www.energymicro.com</b>
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*******************************************************************************
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*
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* This source code is the property of Energy Micro AS. The source and compiled
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* code may only be used on Energy Micro "EFM32" microcontrollers.
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*
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* This copyright notice may not be removed from the source code nor changed.
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*
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* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
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* obligation to support this Software. Energy Micro AS is providing the
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* Software "AS IS", with no express or implied warranties of any kind,
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* including, but not limited to, any implied warranties of merchantability
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* or fitness for any particular purpose or warranties against infringement
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* of any proprietary rights of a third party.
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*
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* Energy Micro AS will not be liable for any consequential, incidental, or
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* special damages, or any other relief, or for any claim by any third party,
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* arising from your use of this Software.
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*
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******************************************************************************/
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#ifndef __EFM32_COMMON_H
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#define __EFM32_COMMON_H
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/***************************************************************************//**
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* @addtogroup EFM32_Library
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* @{
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******************************************************************************/
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/***************************************************************************//**
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* @addtogroup COMMON
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* @brief EFM32 general purpose utilities.
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* @{
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******************************************************************************/
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#if !defined(__GNUC__)
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/** Macro for getting minimum value. */
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#define EFM32_MIN(a, b) ((a) < (b) ? (a) : (b))
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/** Macro for getting maximum value. */
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#define EFM32_MAX(a, b) ((a) > (b) ? (a) : (b))
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/** Macros for handling packed structs. */
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#define STRINGIZE(X) #X
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#define EFM32_PACK_START(X) _Pragma( STRINGIZE( pack( ##X## ) ) )
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#define EFM32_PACK_END() _Pragma( "pack()" )
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#define __attribute__(...)
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/** Macros for handling aligned structs. */
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#ifdef __CC_ARM
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#define EFM32_ALIGN(X) __align(X)
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#endif
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#ifdef __ICCARM__
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#define EFM32_ALIGN(X) _Pragma( STRINGIZE( data_alignment=##X## ) )
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#endif
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#else
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/** Macro for getting minimum value. No sideeffects, a and b are evaluated once only. */
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#define EFM32_MIN(a, b) ({ __typeof__(a) _a = (a); __typeof__(b) _b = (b); _a < _b ? _a : _b; })
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/** Macro for getting maximum value. No sideeffects, a and b are evaluated once only. */
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#define EFM32_MAX(a, b) ({ __typeof__(a) _a = (a); __typeof__(b) _b = (b); _a > _b ? _a : _b; })
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/** Macro for handling packed structs.
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* @n Use this macro before the struct definition.
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* @n X denotes the maximum alignment of struct members. X is not supported on
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* gcc, gcc always use 1 byte maximum alignment.
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*/
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#define EFM32_PACK_START( x )
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/** Macro for handling packed structs.
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* @n Use this macro after the struct definition.
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* @n On gcc add __attribute__ ((packed)) after the closing } of the struct
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* definition.
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*/
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#define EFM32_PACK_END()
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/** Macro for aligning a variable.
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* @n Use this macro before the variable definition.
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* @n X denotes the storage alignment value in bytes.
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* @n On gcc use __attribute__ ((aligned(X))) before the ; on normal variables.
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* Use __attribute__ ((aligned(X))) before the opening { on struct variables.
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*/
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#define EFM32_ALIGN(X)
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#endif
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/** @} (end addtogroup COMMON) */
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/** @} (end addtogroup EFM32_Library) */
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#ifdef __cplusplus
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}
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#endif
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#endif /* __EFM32_COMMON_H */
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