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72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
/*
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* Copyright (C) 2018 Gunar Schorcht
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup cpu_esp8266
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* @ingroup drivers_periph_pm
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* @{
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*
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* @file
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* @brief Implementation of power management functions
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*
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* @author Gunar Schorcht <gunar@schorcht.net>
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* @}
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*/
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#define ENABLE_DEBUG 0
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#include "debug.h"
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#include <stdbool.h>
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#include "irq.h"
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#include "esp/xtensa_ops.h"
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#include "sdk/ets_task.h"
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#include "sdk/sdk.h"
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#include "syscalls.h"
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void pm_set_lowest(void)
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{
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DEBUG ("%s\n", __func__);
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/* execute all pending system tasks before going to sleep */
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/* is it really necessary, the timer interrupt is thrown every some ms? */
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ets_tasks_run ();
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#if !defined(QEMU)
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DEBUG ("%s enter to sleep @%u\n", __func__, phy_get_mactime());
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/* passive wait for interrupt to leave lowest power mode */
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__asm__ volatile ("waiti 0");
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DEBUG ("%s exit from sleep @%u\n", __func__, phy_get_mactime());
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#endif
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/*
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* We could execute all pending system tasks after an interrupt before
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* continuing RIOT. However, to give RIOT tasks the highest priority,
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* *ets_tasks_run* should be called only before going to sleep
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*/
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ets_tasks_run ();
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}
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void pm_off(void)
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{
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DEBUG ("%s\n", __func__);
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system_deep_sleep(0);
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}
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void pm_reboot(void)
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{
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DEBUG ("%s\n", __func__);
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/* shut down WIFI and call system_restart_local after timer */
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system_restart ();
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}
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