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56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/***************************************************************************//**
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* @file sleep.c
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*******************************************************************************
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* @section License
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* <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b>
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*******************************************************************************
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* 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, WITHOUT
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* 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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******************************************************************************/
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#include "device.h"
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#if DEVICE_SLEEP
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#include "sleep_api.h"
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#include "em_emu.h"
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/**
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* Sleep mode.
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* Stop the core clock using a WFI.
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*/
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void hal_sleep(void)
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{
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EMU_EnterEM1();
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}
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/**
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* Deep Sleep mode.
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* Enter Energy Mode 2, turning off all high-frequency clocks.
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*
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* In EM2 the high frequency oscillator is turned off, but with the 32.768 kHz
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* oscillator running, selected low energy peripherals (LCD, RTC, LETIMER,
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* PCNT, LEUART, I2C, LESENSE, OPAMP, USB, WDOG and ACMP) are still
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* available. This gives a high degree of autonomous operation with a current
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* consumption as low as 1.1 μA with RTC enabled. Power-on Reset, Brown-out
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* Detection and full RAM and CPU retention is also included.
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*/
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void hal_deepsleep(void)
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{
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EMU_EnterEM2(true);
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}
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#endif
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