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82 lines
1.4 KiB
C
82 lines
1.4 KiB
C
/*
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* Copyright (C) 2014 Eistec AB
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*
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* This file is subject to the terms and conditions of the GNU Lesser General
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* Public License v2.1. See the file LICENSE in the top level directory for more
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* details.
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*/
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/**
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* @ingroup cpu_k60
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* @{
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*
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* @file
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* @brief Implementation of the kernel's power management interface
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*
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* @author Joakim Nohlgård <joakim.nohlgard@eistec.se>
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*
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* @}
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*/
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#include "cpu.h"
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#include "arch/lpm_arch.h"
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static inline void wait(void)
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{
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/* Clear the SLEEPDEEP bit to make sure we go into WAIT (sleep) mode instead
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* of deep sleep.
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*/
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SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
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/* WFI instruction will start entry into WAIT mode */
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__WFI();
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}
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void lpm_arch_init(void)
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{
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/* Stub waiting for https://github.com/RIOT-OS/RIOT/pull/2605 */
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}
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enum lpm_mode lpm_arch_set(enum lpm_mode target)
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{
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switch (target) {
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case LPM_ON:
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/* MCU is active, do not go to low power */
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break;
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case LPM_IDLE:
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case LPM_SLEEP:
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case LPM_POWERDOWN:
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case LPM_OFF:
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wait();
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break;
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case LPM_UNKNOWN:
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default:
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break;
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}
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return 0;
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}
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enum lpm_mode lpm_arch_get(void)
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{
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/* TODO */
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return LPM_ON;
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}
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void lpm_arch_awake(void)
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{
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/* TODO */
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}
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void lpm_arch_begin_awake(void)
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{
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/* TODO */
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}
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void lpm_arch_end_awake(void)
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{
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/* TODO */
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}
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