75 lines
3.5 KiB
C
75 lines
3.5 KiB
C
/*
|
|
* Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
|
|
* 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 copyright holder 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 HOLDER 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.
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \addtogroup cc26xx-clocks
|
|
* @{
|
|
*
|
|
* \defgroup cc26xx-rtimer CC13xx/CC26xx rtimer
|
|
*
|
|
* Implementation of the rtimer module for the CC13xx/CC26xx
|
|
* @{
|
|
*/
|
|
/**
|
|
* \file
|
|
* Header file for the CC13xx/CC26xx rtimer driver
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
#ifndef RTIMER_ARCH_H_
|
|
#define RTIMER_ARCH_H_
|
|
/*---------------------------------------------------------------------------*/
|
|
#include "contiki.h"
|
|
/*---------------------------------------------------------------------------*/
|
|
#define RTIMER_ARCH_SECOND 65536
|
|
/*---------------------------------------------------------------------------*/
|
|
rtimer_clock_t rtimer_arch_now(void);
|
|
|
|
/* HW oscillator frequency is 32 kHz, not 64 kHz and RTIMER_NOW() never returns
|
|
* an odd value; so US_TO_RTIMERTICKS always rounds to the nearest even number.
|
|
*/
|
|
#define US_TO_RTIMERTICKS(US) (2 * ((US) >= 0 ? \
|
|
(((int32_t)(US) * (RTIMER_ARCH_SECOND / 2) + 500000) / 1000000L) : \
|
|
((int32_t)(US) * (RTIMER_ARCH_SECOND / 2) - 500000) / 1000000L))
|
|
|
|
#define RTIMERTICKS_TO_US(T) ((T) >= 0 ? \
|
|
(((int32_t)(T) * 1000000L + ((RTIMER_ARCH_SECOND) / 2)) / (RTIMER_ARCH_SECOND)) : \
|
|
((int32_t)(T) * 1000000L - ((RTIMER_ARCH_SECOND) / 2)) / (RTIMER_ARCH_SECOND))
|
|
|
|
/* A 64-bit version because the 32-bit one cannot handle T >= 4295 ticks.
|
|
Intended only for positive values of T. */
|
|
#define RTIMERTICKS_TO_US_64(T) ((uint32_t)(((uint64_t)(T) * 1000000 + ((RTIMER_ARCH_SECOND) / 2)) / (RTIMER_ARCH_SECOND)))
|
|
/*---------------------------------------------------------------------------*/
|
|
#endif /* RTIMER_ARCH_H_ */
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* @}
|
|
* @}
|
|
*/
|