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[airborne] std.h: define NULL if not already done

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This commit is contained in:
Felix Ruess
2013-03-01 18:28:20 +01:00
parent 8d22a6465c
commit b37d956cff
1 changed files with 9 additions and 1 deletions
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sw/include/std.h
+9 -1
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@@ -61,6 +61,14 @@
#define TRUE (!FALSE) #define TRUE (!FALSE)
#endif #endif
#ifndef NULL
#ifdef __cplusplus
#define NULL 0
#else
#define NULL ((void *)0)
#endif
#endif
/* Boolean values */ /* Boolean values */
typedef uint8_t bool_t; typedef uint8_t bool_t;
@@ -156,7 +164,7 @@ typedef uint8_t unit_t;
#define RunXTimesEvery(_jumpstart, _prescaler, _interval, _xtimes, _code) { \ #define RunXTimesEvery(_jumpstart, _prescaler, _interval, _xtimes, _code) { \
static uint16_t prescaler = _jumpstart; \ static uint16_t prescaler = _jumpstart; \
static uint16_t xtimes = 0; \ static uint16_t xtimes = 0; \
prescaler++; \ prescaler++; \
if (prescaler >= _prescaler + _interval*xtimes && xtimes < _xtimes) { \ if (prescaler >= _prescaler + _interval*xtimes && xtimes < _xtimes) { \
_code; \ _code; \