8bcde2e40f
* The clock interrupt must be scheduled relative to the last interrupt, not relative to the current time (which may have progressed significantly) * clock_time() must increase continuously, so that code that may be spinning around clock_time() will make progress, not only after each interrupt
105 lines
3.8 KiB
C
105 lines
3.8 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
|
|
* @{
|
|
*
|
|
* \defgroup cc26xx-clocks CC13xx/CC26xx clock and timer subsystem
|
|
*
|
|
* For the CC13xx/CC26xx cpu we use the AON RTC as the basis for all clocks and
|
|
* timers
|
|
*
|
|
* We use two of the aviable AON RTC channels. Channel 0 is used by the rtimer
|
|
* sub-system. Channel 1 is used by the system clock and the LPM module.
|
|
*
|
|
* The RTC runs in all power modes except 'shutdown'
|
|
*
|
|
* @{
|
|
*
|
|
* \defgroup cc13xx-cc26xx-rtc CC13xx/CC26xx AON RTC driver
|
|
*
|
|
* Underpins the platform's software clocks and timers
|
|
*
|
|
* @{
|
|
* \file
|
|
* Header file for the CC13xx/CC26xx AON RTC driver
|
|
*/
|
|
#ifndef SOC_RTC_H_
|
|
#define SOC_RTC_H_
|
|
/*---------------------------------------------------------------------------*/
|
|
#include "contiki.h"
|
|
|
|
#include "rtimer.h"
|
|
|
|
#include <stdint.h>
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Initialise the CC13XX/CC26XX AON RTC module
|
|
*
|
|
* This timer configures AON RTC channels.
|
|
*
|
|
* This function must be called before clock_init() and rtimer_init()
|
|
*/
|
|
void soc_rtc_init(void);
|
|
|
|
/**
|
|
* \brief Return the time of the next scheduled rtimer event
|
|
* \return The time at which the next rtimer event is due to fire
|
|
*
|
|
* This function will check both AON RTC channels and will only take CH0's
|
|
* compare into account if the channel is actually enabled
|
|
*/
|
|
rtimer_clock_t soc_rtc_get_next_trigger(void);
|
|
|
|
/**
|
|
* \brief Schedule an AON RTC channel 0 one-shot compare event
|
|
* \param channel AON_RTC_CH0 or AON_RTC_CH1
|
|
* \param t The time when the event will be fired. This is an absolute
|
|
* time, in other words the event will fire AT time \e t,
|
|
* not IN \e t ticks
|
|
*
|
|
* Channel AON_RTC_CH0 is reserved for the rtimer. AON_RTC_CH1 is reserved
|
|
* for the system clock.
|
|
*
|
|
* User applications should not use this function. User applications should
|
|
* instead use Contiki's timer-related libraries
|
|
*/
|
|
void soc_rtc_schedule_one_shot(uint32_t channel, uint32_t t);
|
|
|
|
rtimer_clock_t soc_rtc_last_isr_time(void);
|
|
/*---------------------------------------------------------------------------*/
|
|
#endif /* SOC_RTC_H_ */
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* @}
|
|
* @}
|
|
* @}
|
|
*/
|