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66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/*
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* Copyright (C) 2019 Beuth Hochschule für Technik Berlin
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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_lpc2387
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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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* @note Handling of wake-up from POWERDOWN & SLEEP is not implemented
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* yet, so those states are disabled.
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*
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* @author Benjamin Valentin <benpicco@beuth-hochschule.de>
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*
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* @}
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*/
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#include "cpu.h"
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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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switch (mode) {
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case 0:
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/* Everything except battery backup is powered down */
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DEBUG_PUTS("pm_set(): setting Deep Power Down mode.");
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PCON |= PM_DEEP_POWERDOWN;
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/* CPU will reset on wake-up */
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break;
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case 1:
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/* PLL & Flash are powered down */
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DEBUG_PUTS("pm_set(): setting Power Down mode.");
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PCON |= PM_POWERDOWN;
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cpu_init_pll();
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cpu_init_mam();
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break;
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case 2:
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/* PLL is powered down */
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DEBUG_PUTS("pm_set(): setting Sleep mode.");
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PCON |= PM_SLEEP;
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cpu_init_pll();
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break;
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default: /* Falls through */
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case 3:
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DEBUG_PUTS("pm_set(): setting Idle mode.");
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PCON |= PM_IDLE;
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break;
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}
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}
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