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64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
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* Copyright (C) 2019 ML!PA Consulting GmbH
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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_samd5x
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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 the kernels power management interface
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*
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* @author Benjamin Valentin <benjamin.valentin@ml-pa.com>
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*
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* @}
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*/
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#include "periph/pm.h"
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#define ENABLE_DEBUG 0
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#include "debug.h"
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void pm_set(unsigned mode)
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{
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bool deep = 0;
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uint32_t _mode;
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switch (mode) {
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case 0:
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DEBUG_PUTS("pm_set(): setting BACKUP mode.");
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_mode = PM_SLEEPCFG_SLEEPMODE_BACKUP;
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deep = 1;
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break;
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case 1:
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DEBUG_PUTS("pm_set(): setting HIBERNATE mode.");
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_mode = PM_SLEEPCFG_SLEEPMODE_HIBERNATE;
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deep = 1;
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break;
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case 2:
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DEBUG_PUTS("pm_set(): setting STANDBY mode.");
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_mode = PM_SLEEPCFG_SLEEPMODE_STANDBY;
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deep = 1;
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break;
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case 3:
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DEBUG_PUTS("pm_set(): setting IDLE2 mode.");
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_mode = PM_SLEEPCFG_SLEEPMODE_IDLE2;
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break;
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default:
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/* no sleep */
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return;
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}
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/* write sleep configuration */
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PM->SLEEPCFG.reg = _mode;
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/* make sure value has been set */
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while ((PM->SLEEPCFG.reg & PM_SLEEPCFG_SLEEPMODE_Msk) != _mode) {}
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sam0_cortexm_sleep(deep);
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}
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