mirror of https://github.com/ARMmbed/mbed-os.git
85 lines
2.5 KiB
C
85 lines
2.5 KiB
C
/* mbed Microcontroller Library
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* Copyright (c) 2006-2013 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "sleep_api.h"
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#include "cmsis.h"
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#include "fsl_smc.h"
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#include "fsl_clock_config.h"
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void hal_sleep(void)
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{
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SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll);
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SMC_SetPowerModeWait(SMC);
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}
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static void PreEnterStopModes(void)
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{
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flash_prefetch_speculation_status_t speculationStatus =
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{
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kFLASH_prefetchSpeculationOptionDisable, /* Disable instruction speculation.*/
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kFLASH_prefetchSpeculationOptionDisable, /* Disable data speculation.*/
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};
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__ISB();
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/*
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* Before enter stop modes, the flash cache prefetch should be disabled.
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* Otherwise the prefetch might be interrupted by stop, then the data and
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* and instruction from flash are wrong.
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*/
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FLASH_PflashSetPrefetchSpeculation(&speculationStatus);
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}
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static void PostExitStopModes(void)
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{
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flash_prefetch_speculation_status_t speculationStatus =
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{
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kFLASH_prefetchSpeculationOptionEnable, /* Enable instruction speculation.*/
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kFLASH_prefetchSpeculationOptionEnable, /* Enable data speculation.*/
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};
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FLASH_PflashSetPrefetchSpeculation(&speculationStatus);
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__ISB();
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}
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void hal_deepsleep(void)
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{
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#if (defined(FSL_FEATURE_SOC_MCG_COUNT) && FSL_FEATURE_SOC_MCG_COUNT)
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#if (defined(FSL_FEATURE_MCG_HAS_PLL) && FSL_FEATURE_MCG_HAS_PLL)
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mcg_mode_t mode = CLOCK_GetMode();
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#endif // FSL_FEATURE_MCG_HAS_PLL
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#endif // FSL_FEATURE_SOC_MCG_COUNT
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SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll);
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PreEnterStopModes();
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SMC_SetPowerModeVlps(SMC);
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PostExitStopModes();
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#if (defined(FSL_FEATURE_SOC_MCG_COUNT) && FSL_FEATURE_SOC_MCG_COUNT)
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#if (defined(FSL_FEATURE_MCG_HAS_PLL) && FSL_FEATURE_MCG_HAS_PLL)
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/*
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* If enter stop modes when MCG in PEE mode, then after wakeup, the MCG is in PBE mode,
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* need to enter PEE mode manually.
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*/
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if (mode == kMCG_ModePEE) {
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BOARD_BootClockRUN();
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}
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#endif // FSL_FEATURE_MCG_HAS_PLL
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#endif // FSL_FEATURE_SOC_MCG_COUNT
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}
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