110 lines
3.7 KiB
C
110 lines
3.7 KiB
C
/*
|
|
* Copyright (c) 2015 Nordic Semiconductor. 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 nrf52832
|
|
* @{
|
|
*
|
|
* \file
|
|
* Implementation of the architecture dependent rtimer functions for the nRF52
|
|
*
|
|
* \author
|
|
* Wojciech Bober <wojciech.bober@nordicsemi.no>
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include "nrf.h"
|
|
#include "nrf_drv_timer.h"
|
|
#include "app_error.h"
|
|
#include "contiki.h"
|
|
#include "platform-conf.h"
|
|
|
|
static const nrf_drv_timer_t timer = NRF_DRV_TIMER_INSTANCE(PLATFORM_TIMER_INSTANCE_ID); /**< Timer instance used for rtimer */
|
|
|
|
/**
|
|
* \brief Handler for timer events.
|
|
*
|
|
* \param event_type type of an event that should be handled
|
|
* \param p_context opaque data pointer passed from nrf_drv_timer_init()
|
|
*/
|
|
static void
|
|
timer_event_handler(nrf_timer_event_t event_type, void* p_context)
|
|
{
|
|
switch (event_type) {
|
|
case NRF_TIMER_EVENT_COMPARE1:
|
|
rtimer_run_next();
|
|
break;
|
|
|
|
default:
|
|
//Do nothing.
|
|
break;
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Initialize platform rtimer
|
|
*/
|
|
void
|
|
rtimer_arch_init(void)
|
|
{
|
|
ret_code_t err_code = nrf_drv_timer_init(&timer, NULL, timer_event_handler);
|
|
APP_ERROR_CHECK(err_code);
|
|
nrf_drv_timer_enable(&timer);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Schedules an rtimer task to be triggered at time t
|
|
* \param t The time when the task will need executed.
|
|
*
|
|
* \e t is an absolute time, in other words the task will be executed AT
|
|
* time \e t, not IN \e t rtimer ticks.
|
|
*
|
|
* This function schedules a one-shot event with the nRF RTC.
|
|
*/
|
|
void
|
|
rtimer_arch_schedule(rtimer_clock_t t)
|
|
{
|
|
nrf_drv_timer_compare(&timer, NRF_TIMER_CC_CHANNEL1, t, true);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief Returns the current real-time clock time
|
|
* \return The current rtimer time in ticks
|
|
*
|
|
*/
|
|
rtimer_clock_t
|
|
rtimer_arch_now()
|
|
{
|
|
return nrf_drv_timer_capture(&timer, NRF_TIMER_CC_CHANNEL0);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* @}
|
|
*/
|