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/**
* @file os_time.h
* @author ALLWINNERTECH IOT WLAN Team
*/
/*
* Copyright (C) 2017 ALLWINNERTECH TECHNOLOGY CO., LTD. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of ALLWINNERTECH TECHNOLOGY CO., LTD. nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _KERNEL_OS_FREERTOS_OS_TIME_H_
#define _KERNEL_OS_FREERTOS_OS_TIME_H_
#include "_os_common.h"
//#include "task.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Parameters used to convert the time values */
#define OS_MSEC_PER_SEC 1000U /* milliseconds per second */
#define OS_USEC_PER_MSEC 1000U /* microseconds per millisecond */
#define OS_USEC_PER_SEC 1000000U /* microseconds per second */
/* system clock's frequency, OS ticks per second */
#define OS_HZ configTICK_RATE_HZ
/* microseconds per OS tick (1000000 / OS_HZ) */
#define OS_TICK (OS_USEC_PER_SEC / OS_HZ)
/** @brief Get the number of ticks since OS start */
/* Due to portTICK_TYPE_IS_ATOMIC is 1, calling xTaskGetTickCount() in ISR is
* safe also.
*/
#define OS_GetTicks() ((OS_Time_t)xTaskGetTickCount())
/** @brief Get the number of seconds since OS start */
#define OS_GetTime() (OS_GetTicks() / OS_HZ)
/**
* @brief Macros used to convert various time units to each other
* - Secs stand for seconds
* - MSecs stand for milliseconds
* - Ticks stand for OS ticks
* - Jiffies stand for OS jiffies, which is a synonym for OS ticks
*/
#define OS_SecsToTicks(sec) ((OS_Time_t)(sec) * OS_HZ)
#define OS_MSecsToTicks(msec) ((OS_Time_t)pdMS_TO_TICKS(msec))
#define OS_TicksToMSecs(t) ((uint32_t)(t) / (OS_USEC_PER_MSEC / OS_TICK))
#define OS_TicksToSecs(t) ((uint32_t)(t) / (OS_USEC_PER_SEC / OS_TICK))
#define OS_GetJiffies() OS_GetTicks()
#define OS_SecsToJiffies(sec) OS_SecsToTicks(sec)
#define OS_MSecsToJiffies(msec) OS_MSecsToTicks(msec)
#define OS_JiffiesToMSecs(j) OS_TicksToMSecs(j)
#define OS_JiffiesToSecs(j) OS_TicksToSecs(j)
/**
* @brief Macros used to sleep for the given time (milliseconds or seconds)
*/
#define OS_MSleep(msec) vTaskDelay(pdMS_TO_TICKS(msec))
//#define OS_MSleep(msec) udelay(msec*1000);
#define OS_Sleep(sec) OS_MSleep((sec) * OS_MSEC_PER_SEC)
#define OS_SSleep(sec) OS_Sleep(sec)
#define OS_Udelay(usec) udelay(usec);
/**
* @brief Macros used to compare time values
*
* These inlines deal with timer wrapping correctly. You are
* strongly encouraged to use them
* 1. Because people otherwise forget
* 2. Because if the timer wrap changes in future you won't have to
* alter your code.
*
* OS_TimeAfter(a,b) returns true if the time a is after time b.
*
* Do this with "<0" and ">=0" to only test the sign of the result. A
* good compiler would generate better code (and a really good compiler
* wouldn't care). Gcc is currently neither.
*/
#define OS_TimeAfter(a, b) ((int32_t)(b) - (int32_t)(a) < 0)
#define OS_TimeBefore(a, b) OS_TimeAfter(b, a)
#define OS_TimeAfterEqual(a, b) ((int32_t)(a) - (int32_t)(b) >= 0)
#define OS_TimeBeforeEqual(a, b) OS_TimeAfterEqual(b, a)
/** @brief Macros used to generate fake random 32-bit value */
/* The fake random 32-bit value is generated by combining OS ticks and
* the value of SysTick current value register.
*/
#define OS_Rand32() \
((uint32_t)(((*((volatile uint32_t *)0xE000E018)) & 0xffffff) | \
(OS_GetTicks() << 24)))
#ifdef __cplusplus
}
#endif
#endif /* _KERNEL_OS_FREERTOS_OS_TIME_H_ */
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