mirror of https://github.com/rusefi/rusefi-1.git
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/**
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* @file efitime.h
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*
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* By the way, there are 86400000 milliseconds in a day
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*
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* @date Apr 14, 2014
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* @author Andrey Belomutskiy, (c) 2012-2017
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*/
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#ifndef EFITIME_H_
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#define EFITIME_H_
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#include "efifeatures.h"
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#include "rusefi_types.h"
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#define US_PER_SECOND 1000000
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#define US_PER_SECOND_LL 1000000LL
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#define MS2US(MS_TIME) ((MS_TIME) * 1000)
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// todo: implement a function to work with times considering counter overflow
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#define overflowDiff(now, time) ((now) - (time))
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#ifdef __cplusplus
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extern "C"
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{
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#endif /* __cplusplus */
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/**
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* 64-bit counter of microseconds (1/1 000 000 of a second) since MCU reset
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*
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* By using 64 bit, we can achieve a very precise timestamp which does not overflow.
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* The primary implementation counts the number of CPU cycles from MCU reset.
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*
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* WARNING: you should use getTimeNowNt where possible for performance reasons.
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* The heaviest part is '__aeabi_ildivmod' - non-native 64 bit division
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*/
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efitimeus_t getTimeNowUs(void);
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/**
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* 64-bit counter CPU cycles since MCU reset
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*/
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efitick_t getTimeNowNt(void);
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efitick_t getHalTimer(void);
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/**
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* @brief Returns the number of milliseconds since the board initialization.
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*/
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efitimems_t currentTimeMillis(void);
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/**
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* @brief Current system time in seconds.
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*/
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efitimesec_t getTimeNowSeconds(void);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* EFITIME_H_ */
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