Lancaster University / mbed-src

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-src by mbed official

targets/hal/TARGET_NXP/TARGET_LPC11U6X/sleep.c@510:bb3effbb3493, 2015-04-09 (annotated)

Committer:
mbed_official
Date:
Thu Apr 09 08:00:08 2015 +0100
Revision:
510:bb3effbb3493
Synchronized with git revision 9ef9a549724a809142e5d9b80292843962a48c17



Full URL: https://github.com/mbedmicro/mbed/commit/9ef9a549724a809142e5d9b80292843962a48c17/



Add sleep and deepsleep for LPC11U68. Needs testing on board

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 510:bb3effbb3493 1 /* mbed Microcontroller Library
mbed_official 510:bb3effbb3493 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 510:bb3effbb3493 3 *
mbed_official 510:bb3effbb3493 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 510:bb3effbb3493 5 * you may not use this file except in compliance with the License.
mbed_official 510:bb3effbb3493 6 * You may obtain a copy of the License at
mbed_official 510:bb3effbb3493 7 *
mbed_official 510:bb3effbb3493 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 510:bb3effbb3493 9 *
mbed_official 510:bb3effbb3493 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 510:bb3effbb3493 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 510:bb3effbb3493 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 510:bb3effbb3493 13 * See the License for the specific language governing permissions and
mbed_official 510:bb3effbb3493 14 * limitations under the License.
mbed_official 510:bb3effbb3493 15 */
mbed_official 510:bb3effbb3493 16 #include "sleep_api.h"
mbed_official 510:bb3effbb3493 17 #include "cmsis.h"
mbed_official 510:bb3effbb3493 18 #include "mbed_interface.h"
mbed_official 510:bb3effbb3493 19
mbed_official 510:bb3effbb3493 20 #if DEVICE_SLEEP
mbed_official 510:bb3effbb3493 21
mbed_official 510:bb3effbb3493 22 void sleep(void) {
mbed_official 510:bb3effbb3493 23
mbed_official 510:bb3effbb3493 24 #if (DEVICE_SEMIHOST == 1)
mbed_official 510:bb3effbb3493 25 // ensure debug is disconnected
mbed_official 510:bb3effbb3493 26 mbed_interface_disconnect();
mbed_official 510:bb3effbb3493 27 #endif
mbed_official 510:bb3effbb3493 28
mbed_official 510:bb3effbb3493 29 // PCON[PM] (bits 2:0) set to 0
mbed_official 510:bb3effbb3493 30 LPC_PMU->PCON &= ~0x03;
mbed_official 510:bb3effbb3493 31
mbed_official 510:bb3effbb3493 32 // SRC[SLEEPDEEP] set to 0 = sleep
mbed_official 510:bb3effbb3493 33 SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk;
mbed_official 510:bb3effbb3493 34
mbed_official 510:bb3effbb3493 35 // wait for interrupt
mbed_official 510:bb3effbb3493 36 __WFI();
mbed_official 510:bb3effbb3493 37 }
mbed_official 510:bb3effbb3493 38
mbed_official 510:bb3effbb3493 39
mbed_official 510:bb3effbb3493 40 void deepsleep(void) {
mbed_official 510:bb3effbb3493 41
mbed_official 510:bb3effbb3493 42 #if (DEVICE_SEMIHOST == 1)
mbed_official 510:bb3effbb3493 43 // ensure debug is disconnected
mbed_official 510:bb3effbb3493 44 mbed_interface_disconnect();
mbed_official 510:bb3effbb3493 45 #endif
mbed_official 510:bb3effbb3493 46
mbed_official 510:bb3effbb3493 47 // PCON[PM] (bits 2:0) set to 1
mbed_official 510:bb3effbb3493 48 LPC_PMU->PCON &= ~0x03;
mbed_official 510:bb3effbb3493 49 LPC_PMU->PCON |= 0x01;
mbed_official 510:bb3effbb3493 50
mbed_official 510:bb3effbb3493 51 //According to user manual it is kinda picky about reserved bits, so we follow that nicely
mbed_official 510:bb3effbb3493 52 //Keep WDOSC and BOD in same state as they are now during deepsleep
mbed_official 510:bb3effbb3493 53 LPC_SYSCON->PDSLEEPCFG = 0x00000037 | (LPC_SYSCON->PDRUNCFG & (0x00000048));
mbed_official 510:bb3effbb3493 54
mbed_official 510:bb3effbb3493 55 // Power up same as before powerdown
mbed_official 510:bb3effbb3493 56 LPC_SYSCON->PDAWAKECFG = LPC_SYSCON->PDRUNCFG;
mbed_official 510:bb3effbb3493 57
mbed_official 510:bb3effbb3493 58 // All interrupts can wake
mbed_official 510:bb3effbb3493 59 LPC_SYSCON->STARTERP0 = 0xFF;
mbed_official 510:bb3effbb3493 60 LPC_SYSCON->STARTERP1 = 0xFFFFFFFF;
mbed_official 510:bb3effbb3493 61
mbed_official 510:bb3effbb3493 62 // SRC[SLEEPDEEP] set to 1 = deep sleep
mbed_official 510:bb3effbb3493 63 SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;
mbed_official 510:bb3effbb3493 64
mbed_official 510:bb3effbb3493 65 // wait for interrupt
mbed_official 510:bb3effbb3493 66 __WFI();
mbed_official 510:bb3effbb3493 67 }
mbed_official 510:bb3effbb3493 68
mbed_official 510:bb3effbb3493 69 #endif