osd-contiki/cpu/cc2430/rtimer-arch.h
2012-12-16 19:28:55 +00:00

63 lines
2.4 KiB
C

/*
* Copyright (c) 2007, Swedish Institute of Computer Science.
* 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 the Institute 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 INSTITUTE 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 INSTITUTE 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.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
* Hardware-dependent function declarations used to
* support the contiki rtimer module.
*
* We use Timer 1 on the cc2431.
*
* \author
* Zach Shelby (Original)
* George Oikonomou - <oikonomou@users.sourceforge.net>
* (rtimer-arch implementation for cc2430)
*/
#ifndef __RTIMER_ARCH_H__
#define __RTIMER_ARCH_H__
#include "contiki-conf.h"
#include "cc2430_sfr.h"
/*
* 32 MHz clock, prescaled down to 500 kHz for all 4 timers in clock_init().
* Further prescaled factor 32 for T1, thus T1 is 15625 Hz
*/
#define RTIMER_ARCH_SECOND (15625U)
#define rtimer_arch_now() ((rtimer_clock_t)(T1CNTL + (T1CNTH << 8)))
void cc2430_timer_1_ISR(void) __interrupt(T1_VECTOR);
#endif /* __RTIMER_ARCH_H__ */