Julien Cassette / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

targets/hal/TARGET_NXP/TARGET_LPC13XX/sleep.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "sleep_api.h"
bogdanm 0:9b334a45a8ff 17 #include "cmsis.h"
bogdanm 0:9b334a45a8ff 18 #include "mbed_interface.h"
bogdanm 0:9b334a45a8ff 19
bogdanm 0:9b334a45a8ff 20 void sleep(void) {
bogdanm 0:9b334a45a8ff 21 // PCON[PD] set to sleep
bogdanm 0:9b334a45a8ff 22 LPC_PMU->PCON = 0x0;
bogdanm 0:9b334a45a8ff 23
bogdanm 0:9b334a45a8ff 24 // SRC[SLEEPDEEP] set to 0 = sleep
bogdanm 0:9b334a45a8ff 25 SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
bogdanm 0:9b334a45a8ff 26
bogdanm 0:9b334a45a8ff 27 // wait for interrupt
bogdanm 0:9b334a45a8ff 28 __WFI();
bogdanm 0:9b334a45a8ff 29 }
bogdanm 0:9b334a45a8ff 30
bogdanm 0:9b334a45a8ff 31 void deepsleep(void) {
bogdanm 0:9b334a45a8ff 32 // PCON[PD] set to deepsleep
bogdanm 0:9b334a45a8ff 33 LPC_PMU->PCON = 0x1;
bogdanm 0:9b334a45a8ff 34
bogdanm 0:9b334a45a8ff 35 // SRC[SLEEPDEEP] set to 1 = deep sleep
bogdanm 0:9b334a45a8ff 36 SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
bogdanm 0:9b334a45a8ff 37
bogdanm 0:9b334a45a8ff 38 // Power up everything after powerdown
bogdanm 0:9b334a45a8ff 39 LPC_SYSCON->PDAWAKECFG &= 0xFFFFF800;
bogdanm 0:9b334a45a8ff 40
bogdanm 0:9b334a45a8ff 41 // wait for interrupt
bogdanm 0:9b334a45a8ff 42 __WFI();
bogdanm 0:9b334a45a8ff 43 }