1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/***************************************************************************//**
* @file
* @brief EFM32 general purpose utilities.
* @author Energy Micro AS
* @version 3.0.0
*******************************************************************************
* @section License
* <b>(C) Copyright 2012 Energy Micro AS, http://www.energymicro.com</b>
*******************************************************************************
*
* Permission is granted to anyone to use this software for any purpose,
* including commercial applications, and to alter it and redistribute it
* freely, subject to the following restrictions:
*
* 1. The origin of this software must not be misrepresented; you must not
* claim that you wrote the original software.
* 2. Altered source versions must be plainly marked as such, and must not be
* misrepresented as being the original software.
* 3. This notice may not be removed or altered from any source distribution.
*
* DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Energy Micro AS has no
* obligation to support this Software. Energy Micro AS is providing the
* Software "AS IS", with no express or implied warranties of any kind,
* including, but not limited to, any implied warranties of merchantability
* or fitness for any particular purpose or warranties against infringement
* of any proprietary rights of a third party.
*
* Energy Micro AS will not be liable for any consequential, incidental, or
* special damages, or any other relief, or for any claim by any third party,
* arising from your use of this Software.
*
******************************************************************************/
#ifndef __EM_COMMON_H
#define __EM_COMMON_H
#include <stdint.h>
#include <stdbool.h>
#ifdef __cplusplus
extern "C" {
#endif
/***************************************************************************//**
* @addtogroup EM_Library
* @{
******************************************************************************/
/***************************************************************************//**
* @addtogroup COMMON
* @brief EFM32 general purpose utilities.
* @{
******************************************************************************/
#if !defined(__GNUC__)
/** Macro for getting minimum value. */
#define EFM32_MIN(a, b) ((a) < (b) ? (a) : (b))
/** Macro for getting maximum value. */
#define EFM32_MAX(a, b) ((a) > (b) ? (a) : (b))
/** Macros for handling packed structs. */
#define STRINGIZE(X) #X
#define EFM32_PACK_START(X) _Pragma( STRINGIZE( pack( ##X## ) ) )
#define EFM32_PACK_END() _Pragma( "pack()" )
#define __attribute__(...)
/** Macros for handling aligned structs. */
#ifdef __CC_ARM
#define EFM32_ALIGN(X) __align(X)
#endif
#ifdef __ICCARM__
#define EFM32_ALIGN(X) _Pragma( STRINGIZE( data_alignment=##X## ) )
#endif
#else
/** Macro for getting minimum value. No sideeffects, a and b are evaluated once only. */
#define EFM32_MIN(a, b) ({ __typeof__(a) _a = (a); __typeof__(b) _b = (b); _a < _b ? _a : _b; })
/** Macro for getting maximum value. No sideeffects, a and b are evaluated once only. */
#define EFM32_MAX(a, b) ({ __typeof__(a) _a = (a); __typeof__(b) _b = (b); _a > _b ? _a : _b; })
/** Macro for handling packed structs.
* @n Use this macro before the struct definition.
* @n X denotes the maximum alignment of struct members. X is not supported on
* gcc, gcc always use 1 byte maximum alignment.
*/
#define EFM32_PACK_START( x )
/** Macro for handling packed structs.
* @n Use this macro after the struct definition.
* @n On gcc add __attribute__ ((packed)) after the closing } of the struct
* definition.
*/
#define EFM32_PACK_END()
/** Macro for aligning a variable.
* @n Use this macro before the variable definition.
* @n X denotes the storage alignment value in bytes.
* @n On gcc use __attribute__ ((aligned(X))) before the ; on normal variables.
* Use __attribute__ ((aligned(X))) before the opening { on struct variables.
*/
#define EFM32_ALIGN(X)
#endif
/** @} (end addtogroup COMMON) */
/** @} (end addtogroup EM_Library) */
#ifdef __cplusplus
}
#endif
#endif /* __EM_COMMON_H */
|
