Contiki-NG
rtimer-arch.c
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1/*
2 * Copyright (c) 2014, Texas Instruments Incorporated - http://www.ti.com/
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the copyright holder nor the names of its
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
21 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
28 * OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30/*---------------------------------------------------------------------------*/
31/**
32 * \addtogroup cc26xx-rtimer
33 * @{
34 *
35 * \file
36 * Implementation of the arch-specific rtimer functions for the CC13xx/CC26xx
37 */
38/*---------------------------------------------------------------------------*/
39#include "contiki.h"
40#include "sys/energest.h"
41#include "sys/rtimer.h"
42#include "cpu.h"
43#include "dev/soc-rtc.h"
44
45#include "ti-lib.h"
46
47#include <stdint.h>
48/*---------------------------------------------------------------------------*/
49/**
50 * \brief We don't need to do anything special here. The RTC is initialised
51 * elsewhere
52 */
53void
55{
56 return;
57}
58/*---------------------------------------------------------------------------*/
59 /**
60 *
61 * This function schedules a one-shot event with the AON RTC.
62 *
63 * This functions converts \e to a value suitable for the AON RTC.
64 */
65void
66rtimer_arch_schedule(rtimer_clock_t t)
67{
68 /* Convert the rtimer tick value to a value suitable for the AON RTC */
69 soc_rtc_schedule_one_shot(AON_RTC_CH0, t);
70}
71/*---------------------------------------------------------------------------*/
72/**
73 * \brief Returns the current real-time clock time
74 * \return The current rtimer time in ticks
75 *
76 * The value is read from the AON RTC counter and converted to a number of
77 * rtimer ticks
78 *
79 */
80rtimer_clock_t
82{
83 return ti_lib_aon_rtc_current_compare_value_get();
84}
85/*---------------------------------------------------------------------------*/
86/** @} */
Header file with prototypes for interrupt control on the cc2538 Cortex-M3 micro.
Header file for the energy estimation mechanism.
void soc_rtc_schedule_one_shot(uint32_t channel, uint32_t ticks)
Schedule an AON RTC channel 0 one-shot compare event.
Definition: soc-rtc.c:125
void rtimer_arch_init(void)
We don't need to explicitly initialise anything but this routine is required by the API.
Definition: rtimer-arch.c:59
rtimer_clock_t rtimer_arch_now()
Returns the current real-time clock time.
Definition: rtimer-arch.c:109
void rtimer_arch_schedule(rtimer_clock_t t)
Schedules an rtimer task to be triggered at time t.
Definition: rtimer-arch.c:65
Header file for the real-time timer module.
Header file for the CC13xx/CC26xx AON RTC driver.
Header file with macros which rename TI CC26xxware functions.