Contiki 2.6

rtimer-arch.h

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00001 /*
00002  * Copyright (c) 2010, STMicroelectronics.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above
00011  *    copyright notice, this list of conditions and the following
00012  *    disclaimer in the documentation and/or other materials provided
00013  *    with the distribution.
00014  * 3. The name of the author may not be used to endorse or promote
00015  *    products derived from this software without specific prior
00016  *    written permission.
00017  *
00018  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
00019  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00020  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00021  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
00022  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00023  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
00024  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
00025  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
00026  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00027  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00028  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00029  *
00030  * This file is part of the Contiki OS
00031  *
00032  * $Id: rtimer-arch.h,v 1.1 2010/10/25 09:03:39 salvopitru Exp $
00033  */
00034 
00035 /**
00036  * \file
00037  *         Real-timer header file for STM32W.
00038  * \author
00039  *         Salvatore Pitrulli <salvopitru@users.sourceforge.net>
00040  */
00041 
00042 #ifndef __RTIMER_ARCH_H__
00043 #define __RTIMER_ARCH_H__
00044 
00045 #include "contiki-conf.h"
00046 #include "sys/clock.h"
00047 
00048 
00049 //#define RT_RESOLUTION RES_85US
00050 #ifdef RT_CONF_RESOLUTION
00051 #define RT_RESOLUTION RT_CONF_RESOLUTION
00052 #else
00053 #define RT_RESOLUTION RES_171US
00054 #endif
00055 
00056 #define RES_341US 0
00057 #define RES_171US 1
00058 #define RES_85US  2
00059 
00060 // If it was possible to define a custom size for the rtimer_clock_t type:
00061 //typedef unsigned long long rtimer_clock_t;  // Only 48 bit are used. It's enough for hundreds of years.
00062 
00063 #if RT_RESOLUTION == RES_341US
00064 #define RT_PRESCALER 12      // CK_CNT =  PCLK/4096 = 12 MHz/4096 = 2929.6875 Hz
00065 #define RTIMER_ARCH_SECOND 2930   // One tick: 341.33 us. Using this value we will delay about 9.22 sec after a day.
00066 #endif /* RT_RESOLUTION == RES_341US */
00067 
00068 #if RT_RESOLUTION == RES_171US
00069 #define RT_PRESCALER 11      // CK_CNT =  PCLK/2048 = 12 MHz/2048 = 5859.375 Hz
00070 #define RTIMER_ARCH_SECOND 5859    // One tick: 170.66 us. Using this value we will advance about 5.53 sec after a day.
00071 #endif /* RT_RESOLUTION == RES_171US */
00072 
00073 #if RT_RESOLUTION == RES_85US
00074 #define RT_PRESCALER 10      // CK_CNT =  PCLK/2048 = 12 MHz/2048 = 5859.375 Hz
00075 #define RTIMER_ARCH_SECOND 11719    // One tick: 85.33 us. Using this value we will delay about 1.84 sec after a day.
00076 #endif /* RT_RESOLUTION == RES_85US */
00077 
00078 rtimer_clock_t rtimer_arch_now(void);
00079 //#define rtimer_arch_now() clock_time()
00080 
00081 void rtimer_arch_disable_irq(void);
00082 void rtimer_arch_enable_irq(void);
00083 
00084 #endif /* __RTIMER_ARCH_H__ */