108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/*
|
|
* Copyright (c) 2017 - 2021, Nordic Semiconductor ASA
|
|
* All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* 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 Nordic Semiconductor ASA 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.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* This file implements procedures that should be called with lower priority than caller in
|
|
* the nrf 802.15.4 radio driver.
|
|
*
|
|
*/
|
|
|
|
#include <assert.h>
|
|
|
|
#include "nrf_802154_config.h"
|
|
#include "nrf_802154_peripherals.h"
|
|
#include "rsch/nrf_802154_rsch_prio_drop.h"
|
|
|
|
#include "nrf_802154_swi.h"
|
|
#include "hal/nrf_egu.h"
|
|
#include "platform/nrf_802154_clock.h"
|
|
|
|
#define HFCLK_STOP_INT NRF_EGU_INT_TRIGGERED1 ///< Label of HFClk stop interrupt.
|
|
#define HFCLK_STOP_TASK NRF_EGU_TASK_TRIGGER1 ///< Label of HFClk stop task.
|
|
#define HFCLK_STOP_EVENT NRF_EGU_EVENT_TRIGGERED1 ///< Label of HFClk stop event.
|
|
|
|
/**
|
|
* @brief Requests a stop of the HF clock.
|
|
*
|
|
* The notification is triggered from the SWI priority level.
|
|
*
|
|
* @note This function is to be called through notification module to prevent calling it from
|
|
* the arbiter context.
|
|
*/
|
|
static void swi_hfclk_stop(void)
|
|
{
|
|
assert(!nrf_egu_event_check(NRF_802154_EGU_INSTANCE, HFCLK_STOP_EVENT));
|
|
|
|
nrf_egu_task_trigger(NRF_802154_EGU_INSTANCE, HFCLK_STOP_TASK);
|
|
}
|
|
|
|
/**
|
|
* @brief Terminates the stopping of the HF clock.
|
|
*
|
|
* @note This function terminates the stopping of the HF clock only if it has not been performed
|
|
* yet.
|
|
*/
|
|
static void swi_hfclk_stop_terminate(void)
|
|
{
|
|
nrf_egu_event_clear(NRF_802154_EGU_INSTANCE, HFCLK_STOP_EVENT);
|
|
}
|
|
|
|
void nrf_802154_rsch_prio_drop_init(void)
|
|
{
|
|
nrf_egu_int_enable(NRF_802154_EGU_INSTANCE, HFCLK_STOP_INT);
|
|
|
|
nrf_802154_swi_init();
|
|
}
|
|
|
|
void nrf_802154_rsch_prio_drop_hfclk_stop(void)
|
|
{
|
|
swi_hfclk_stop();
|
|
}
|
|
|
|
void nrf_802154_rsch_prio_drop_hfclk_stop_terminate(void)
|
|
{
|
|
swi_hfclk_stop_terminate();
|
|
}
|
|
|
|
void nrf_802154_rsch_prio_drop_swi_irq_handler(void)
|
|
{
|
|
if (nrf_egu_event_check(NRF_802154_EGU_INSTANCE, HFCLK_STOP_EVENT))
|
|
{
|
|
nrf_802154_clock_hfclk_stop();
|
|
|
|
nrf_egu_event_clear(NRF_802154_EGU_INSTANCE, HFCLK_STOP_EVENT);
|
|
}
|
|
}
|