80 lines
3 KiB
C
80 lines
3 KiB
C
/*
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* Copyright (c) 2010, STMicroelectronics.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This file is part of the Contiki OS
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*
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* $Id: rtimer-arch.h,v 1.1 2010/10/25 09:03:39 salvopitru Exp $
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*/
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/**
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* \file
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* Real-timer header file for STM32W.
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* \author
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* Salvatore Pitrulli <salvopitru@users.sourceforge.net>
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*/
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#ifndef __RTIMER_ARCH_H__
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#define __RTIMER_ARCH_H__
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#include "contiki-conf.h"
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#include "sys/clock.h"
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#define RT_RESOLUTION RES_171US
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#define RES_341US 0
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#define RES_171US 1
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#define RES_85US 2
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// If it was possible to define a custom size for the rtimer_clock_t type:
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//typedef unsigned long long rtimer_clock_t; // Only 48 bit are used. It's enough for hundreds of years.
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#if RT_RESOLUTION == RES_341US
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#define RT_PRESCALER 12 // CK_CNT = PCLK/4096 = 12 MHz/4096 = 2929.6875 Hz
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#define RTIMER_ARCH_SECOND 2930 // One tick: 341.33 us. Using this value we will delay about 9.22 sec after a day.
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#endif /* RT_RESOLUTION == RES_341US */
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#if RT_RESOLUTION == RES_171US
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#define RT_PRESCALER 11 // CK_CNT = PCLK/2048 = 12 MHz/2048 = 5859.375 Hz
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#define RTIMER_ARCH_SECOND 5859 // One tick: 170.66 us. Using this value we will advance about 5.53 sec after a day.
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#endif /* RT_RESOLUTION == RES_171US */
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#if RT_RESOLUTION == RES_85US
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#define RT_PRESCALER 10 // CK_CNT = PCLK/2048 = 12 MHz/2048 = 5859.375 Hz
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#define RTIMER_ARCH_SECOND 11719 // One tick: 85.33 us. Using this value we will delay about 1.84 sec after a day.
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#endif /* RT_RESOLUTION == RES_85US */
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rtimer_clock_t rtimer_arch_now(void);
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//#define rtimer_arch_now() clock_time()
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void rtimer_arch_disable_irq(void);
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void rtimer_arch_enable_irq(void);
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#endif /* __RTIMER_ARCH_H__ */
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