mirror of https://github.com/ARMmbed/mbed-os.git
63 lines
1.6 KiB
C
63 lines
1.6 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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//#define DEEPSLEEP
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#define POWERDOWN
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void hal_sleep(void)
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{
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//Normal sleep mode for PCON:
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LPC_PMU->PCON &= ~0x03;
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//Normal sleep mode for ARM core:
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SCB->SCR = 0;
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//And go to sleep
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__WFI();
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}
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// Deepsleep/powerdown modes assume the device is configured to use its internal RC oscillator directly
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void hal_deepsleep(void)
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{
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//Deep sleep in PCON
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LPC_PMU->PCON &= ~0x03;
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#if defined(DEEPSLEEP)
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LPC_PMU->PCON |= 0x01;
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#elif defined(POWERDOWN)
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LPC_PMU->PCON |= 0x02;
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#endif
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//If brownout detection and WDT are enabled, keep them enabled during sleep
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LPC_SYSCON->PDSLEEPCFG = LPC_SYSCON->PDRUNCFG;
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//After wakeup same stuff as currently enabled:
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LPC_SYSCON->PDAWAKECFG = LPC_SYSCON->PDRUNCFG;
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//All interrupts may wake up:
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LPC_SYSCON->STARTERP0 = 0xFF;
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LPC_SYSCON->STARTERP1 = 0xFFFF;
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//Deep sleep for ARM core:
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SCB->SCR = 1<<2;
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__WFI();
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}
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