40f49948e6
This commit adds cpu, platform and example files, providing support for running Contiki on TI's cc2538 DK
82 lines
3 KiB
C
82 lines
3 KiB
C
/*
|
|
* Copyright (c) 2012, 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 cc2538
|
|
* @{
|
|
*
|
|
* \defgroup cc2538-rtimer cc2538 rtimer
|
|
*
|
|
* Implementation of the rtimer module for the cc2538
|
|
*
|
|
* The rtimer runs on the Sleep Timer. This is a design choice, as many parts
|
|
* of Contiki like rtimers with a value of RTIMER_ARCH_SECOND being a power of
|
|
* two. The ST runs on the 32kHz clock, which can provide us with an excellent
|
|
* value of 32768 for RTIMER_ARCH_SECOND.
|
|
*
|
|
* Additionally, since the ST keeps running in PM2, we can do things like drop
|
|
* to PM2 and schedule a wake-up time through the rtimer API.
|
|
*
|
|
* \note If the 32kHz clock is running on the 32kHz RC OSC, the rtimer is
|
|
* not 100% accurate (the RC OSC does not run at exactly 32.768 kHz). For
|
|
* applications requiring higher accuracy, the 32kHz clock should be changed to
|
|
* use the XOSC as its source. To see which low-frequency OSC the 32kHz clock
|
|
* is running on, see cpu/cc2538/clock.c.
|
|
*
|
|
* \sa cpu/cc2538/clock.c
|
|
* @{
|
|
*/
|
|
/**
|
|
* \file
|
|
* Header file for the cc2538 rtimer driver
|
|
*/
|
|
#ifndef RTIMER_ARCH_H_
|
|
#define RTIMER_ARCH_H_
|
|
|
|
#include "contiki.h"
|
|
#include "dev/gptimer.h"
|
|
|
|
#define RTIMER_ARCH_SECOND 32768
|
|
|
|
/** \sa RTIMER_NOW() */
|
|
rtimer_clock_t rtimer_arch_now(void);
|
|
|
|
/**
|
|
* \brief Get the time of the next scheduled rtimer trigger
|
|
* \return The time next rtimer ISR is scheduled for
|
|
*/
|
|
rtimer_clock_t rtimer_arch_next_trigger(void);
|
|
|
|
#endif /* RTIMER_ARCH_H_ */
|
|
|
|
/**
|
|
* @}
|
|
* @}
|
|
*/
|