Max Regan
d5bfecedb2
Its roughly %15 fast, and initializes to zero, but the display currently shows HH:MM:SS AM/PM.
89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
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/**
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Copyright 2019, Max Regan
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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**/
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#ifndef _MACROS_H_
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#define _MACROS_H_
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#include <assert.h>
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/**
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* I'll probably regret writing all of these at some point.
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*/
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#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
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#define MIN(a,b) ((a > b) ? (b) : (a))
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#define MAX(a,b) ((a < b) ? (b) : (a))
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/*
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* For usage with STM32 libraries
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*/
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#define STM32_FIELD(x, name) \
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((x) & name##_Msk) >> (name##_Pos)
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/*
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* Bitwise Operations
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*/
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#define SET(x, y) \
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do { \
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(x) |= (y); \
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} while (0)
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#define SET_POS(x, y) \
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do { \
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(x) |= 1u << (y); \
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} while (0)
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#define CLR(x, y) \
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do { \
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(x) &= ~(y); \
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} while (0)
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#define CLR_POS(x, y) \
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do { \
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(x) &= ~(1u << (y)); \
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} while (0)
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#define FLIP(x, y) \
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do { \
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(x) ^= (y); \
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} while (0)
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#define FLIP_POS(x, y) \
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do { \
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(x) ^= 1u << y; \
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} while (0)
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#define SET_TO(x, clear_mask, val) \
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static_assert((clear_mask & val) == val, \
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"'value' in SET_TO() has bits set that are not in clear_mask"); \
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do { \
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CLR(x, clear_mask); \
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SET(x, val); \
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} while (0)
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#endif
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