timer.h

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00001 #ifndef _ARCH_ARM_TIMER_H_
00002 #define _ARCH_ARM_TIMER_H_
00003 
00004 /*
00005  * Copyright (C) 2001-2005 by egnite Software GmbH. All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions
00009  * are met:
00010  *
00011  * 1. Redistributions of source code must retain the above copyright
00012  *    notice, this list of conditions and the following disclaimer.
00013  * 2. Redistributions in binary form must reproduce the above copyright
00014  *    notice, this list of conditions and the following disclaimer in the
00015  *    documentation and/or other materials provided with the distribution.
00016  * 3. Neither the name of the copyright holders nor the names of
00017  *    contributors may be used to endorse or promote products derived
00018  *    from this software without specific prior written permission.
00019  *
00020  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00021  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00022  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00023  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00024  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00025  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00026  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00027  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00028  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00029  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00030  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00031  * SUCH DAMAGE.
00032  *
00033  * For additional information see http://www.ethernut.de/
00034  */
00035 
00036 /*
00037  * $Log: timer.h,v $
00038  * Revision 1.5  2007/08/17 10:44:38  haraldkipp
00039  * Timer enable/disable macro replaces previous global interrupt
00040  * enable/disable or function calling.
00041  *
00042  * Revision 1.4  2006/09/29 12:45:35  haraldkipp
00043  * Include clock configuration.
00044  *
00045  * Revision 1.3  2006/08/31 18:59:50  haraldkipp
00046  * Added support for the AT91SAM9260. We now determine between processor and
00047  * master clock. A new API function At91GetMasterClock() had been added to
00048  * query the latter.
00049  *
00050  * Revision 1.2  2006/02/23 15:33:59  haraldkipp
00051  * Support for Philips LPC2xxx Family and LPC-E2294 Board from Olimex added.
00052  * Many thanks to Michael Fischer for this port.
00053  *
00054  * Revision 1.1  2005/07/26 18:35:09  haraldkipp
00055  * First check in
00056  *
00057  */
00058 
00059 #include <cfg/clock.h>
00060 
00061 #if defined(MCU_LPC2XXX) /* MCU */
00062 
00063 #define NutEnableTimerIrq()    VICIntEnable  = (1 << VIC_TIMER0)
00064 #define NutDisableTimerIrq()   VICIntEnClr = (1 << VIC_TIMER0)
00065 
00066 #elif defined (MCU_AT91R40008) || defined (MCU_AT91SAM7X256) || defined (MCU_AT91SAM9260)  /* MCU */
00067 
00068 #if defined(NUT_TICK_AT91PIT)
00069 #define NutEnableTimerIrq()    NutSysIrqEnable(&syssig_PIT)
00070 #define NutDisableTimerIrq()   NutSysIrqDisable(&syssig_PIT)
00071 #else /* NUT_TICK_AT91PIT */
00072 #define NutEnableTimerIrq()    NutIrqEnable(&sig_TC0)
00073 #define NutDisableTimerIrq()   NutIrqDisable(&sig_TC0)
00074 #endif /* NUT_TICK_AT91PIT */
00075 
00076 #else /* MCU */
00077 
00078 #define NutEnableTimerIrq()
00079 #define NutDisableTimerIrq()
00080 
00081 #endif /* MCU */
00082 
00083 #if defined(AT91_PLL_MAINCK)
00084 extern u_long At91GetMasterClock(void);
00085 #endif
00086 
00087 #endif
00088 
00089 

© 2000-2007 by egnite Software GmbH - visit http://www.ethernut.de/