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376961d168
* Update IDF to 65acd99 * Update platformio and arduino build paths and libs * Update esptool binaries
201 lines
5.2 KiB
C
201 lines
5.2 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2014 The Android Open Source Project
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* Copyright 2002 - 2004 Open Interface North America, Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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#ifndef _OI_TIME_H
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#define _OI_TIME_H
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/** @file
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*
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* This file provides time type definitions and interfaces to time-related functions.
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*
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* The stack maintains a 64-bit real-time millisecond clock. The choice of
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* milliseconds is for convenience, not accuracy.
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*
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* Timeouts are specified as tenths of seconds in a 32-bit value. Timeout values
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* specified by the Bluetooth specification are usually muliple seconds, so
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* accuracy to a tenth of a second is more than adequate.
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*
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* This file also contains macros to convert between seconds and the Link
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* Manager's 1.28-second units.
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*
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*/
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/**********************************************************************************
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$Revision: #1 $
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***********************************************************************************/
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#include "oi_stddefs.h"
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/** \addtogroup Misc Miscellaneous APIs */
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/**@{*/
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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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* Within the core stack timeouts are specified in intervals of tenths of seconds
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*/
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typedef OI_UINT16 OI_INTERVAL;
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#define OI_INTERVALS_PER_SECOND 10
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#define MSECS_PER_OI_INTERVAL (1000 / OI_INTERVALS_PER_SECOND)
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/** maximum interval (54 min 36.7 sec) */
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#define OI_MAX_INTERVAL 0x7fff
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/**
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* Macro to convert seconds to OI_INTERVAL time units
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*/
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#define OI_SECONDS(n) ((OI_INTERVAL) ((n) * OI_INTERVALS_PER_SECOND))
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/**
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* Macro to convert milliseconds to OI_INTERVAL time units (Rounded Up)
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*/
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#define OI_MSECONDS(n) ((OI_INTERVAL) ((n + MSECS_PER_OI_INTERVAL - 1) / MSECS_PER_OI_INTERVAL))
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/**
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* Macro to convert minutes to OI_INTERVAL time units
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*/
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#define OI_MINUTES(n) ((OI_INTERVAL) ((n) * OI_SECONDS(60)))
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/** Convert an OI_INTERVAL to milliseconds. */
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#define OI_INTERVAL_TO_MILLISECONDS(i) ((i) * MSECS_PER_OI_INTERVAL)
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/**
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* The stack depends on relative not absolute time. Any mapping between the
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* stack's real-time clock and absolute time and date is implementation-dependent.
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*/
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typedef struct {
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OI_INT32 seconds;
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OI_INT16 mseconds;
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} OI_TIME;
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/**
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* Convert an OI_TIME to milliseconds.
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*
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* @param t the time to convert
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*
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* @return the time in milliseconds
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*/
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OI_UINT32 OI_Time_ToMS(OI_TIME *t);
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/**
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* This function compares two time values.
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*
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* @param T1 first time to compare.
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*
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* @param T2 second time to compare.
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*
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* @return
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@verbatim
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-1 if t1 < t2
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0 if t1 = t2
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+1 if t1 > t2
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@endverbatim
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*/
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OI_INT16 OI_Time_Compare(OI_TIME *T1,
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OI_TIME *T2);
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/**
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* This function returns the interval between two times to a granularity of 0.1 seconds.
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*
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* @param Sooner a time value more recent that Later
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*
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* @param Later a time value later than Sooner
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*
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* @note The result is an OI_INTERVAL value so this function only works for time intervals
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* that are less than about 71 minutes.
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*
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* @return the time interval between the two times = (Later - Sooner)
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*/
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OI_INTERVAL OI_Time_Interval(OI_TIME *Sooner,
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OI_TIME *Later);
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/**
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* This function returns the interval between two times to a granularity of milliseconds.
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*
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* @param Sooner a time value more recent that Later
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*
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* @param Later a time value later than Sooner
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*
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* @note The result is an OI_UINT32 value so this function only works for time intervals
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* that are less than about 50 days.
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*
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* @return the time interval between the two times = (Later - Sooner)
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*/
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OI_UINT32 OI_Time_IntervalMsecs(OI_TIME *Sooner,
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OI_TIME *Later);
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/**
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* This function answers the question, Have we reached or gone past the target time?
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*
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* @param pTargetTime target time
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*
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* @return TRUE means time now is at or past target time
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* FALSE means target time is still some time in the future
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*/
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OI_BOOL OI_Time_NowReachedTime(OI_TIME *pTargetTime);
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/**
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* Convert seconds to the Link Manager 1.28-second units
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* Approximate by using 1.25 conversion factor.
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*/
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#define OI_SECONDS_TO_LM_TIME_UNITS(lmUnits) ((lmUnits)<4?(lmUnits):(lmUnits)-((lmUnits)>>2))
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/**
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* Convert Link Manager 1.28-second units to seconds.
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* Approximate by using 1.25 conversion factor.
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*/
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#define OI_LM_TIME_UNITS_TO_SECONDS(lmUnits) ((lmUnits) + ((lmUnits)>>2))
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#ifdef __cplusplus
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}
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#endif
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/**@}*/
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/* Include for OI_Time_Now() prototype
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* Must be included at end to obtain OI_TIME typedef
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*/
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#include "oi_osinterface.h"
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/*****************************************************************************/
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#endif /* _OI_TIME_H */
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