Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

targets/TARGET_NXP/TARGET_LPC13XX/sleep.c@0:f269e3021894, 2016-10-23 (annotated)

Committer:
elessair
Date:
Sun Oct 23 15:10:02 2016 +0000
Revision:
0:f269e3021894
Initial commit

Who changed what in which revision?

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elessair 0:f269e3021894 1 /* mbed Microcontroller Library
elessair 0:f269e3021894 2 * Copyright (c) 2006-2013 ARM Limited
elessair 0:f269e3021894 3 *
elessair 0:f269e3021894 4 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:f269e3021894 5 * you may not use this file except in compliance with the License.
elessair 0:f269e3021894 6 * You may obtain a copy of the License at
elessair 0:f269e3021894 7 *
elessair 0:f269e3021894 8 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 9 *
elessair 0:f269e3021894 10 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 11 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:f269e3021894 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 13 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 14 * limitations under the License.
elessair 0:f269e3021894 15 */
elessair 0:f269e3021894 16 #include "sleep_api.h"
elessair 0:f269e3021894 17 #include "cmsis.h"
elessair 0:f269e3021894 18 #include "mbed_interface.h"
elessair 0:f269e3021894 19
elessair 0:f269e3021894 20 void sleep(void) {
elessair 0:f269e3021894 21 // PCON[PD] set to sleep
elessair 0:f269e3021894 22 LPC_PMU->PCON = 0x0;
elessair 0:f269e3021894 23
elessair 0:f269e3021894 24 // SRC[SLEEPDEEP] set to 0 = sleep
elessair 0:f269e3021894 25 SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
elessair 0:f269e3021894 26
elessair 0:f269e3021894 27 // wait for interrupt
elessair 0:f269e3021894 28 __WFI();
elessair 0:f269e3021894 29 }
elessair 0:f269e3021894 30
elessair 0:f269e3021894 31 void deepsleep(void) {
elessair 0:f269e3021894 32 // PCON[PD] set to deepsleep
elessair 0:f269e3021894 33 LPC_PMU->PCON = 0x1;
elessair 0:f269e3021894 34
elessair 0:f269e3021894 35 // SRC[SLEEPDEEP] set to 1 = deep sleep
elessair 0:f269e3021894 36 SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
elessair 0:f269e3021894 37
elessair 0:f269e3021894 38 // Power up everything after powerdown
elessair 0:f269e3021894 39 LPC_SYSCON->PDAWAKECFG &= 0xFFFFF800;
elessair 0:f269e3021894 40
elessair 0:f269e3021894 41 // wait for interrupt
elessair 0:f269e3021894 42 __WFI();
elessair 0:f269e3021894 43 }