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targets/hal/TARGET_NXP/TARGET_LPC81X/sleep.c
- Committer:
- mbed_official
- Date:
- 2013-11-21
- Revision:
- 47:02833c62d054
File content as of revision 47:02833c62d054:
/* mbed Microcontroller Library * Copyright (c) 2006-2013 ARM Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "sleep_api.h" #include "cmsis.h" //#define DEEPSLEEP #define POWERDOWN void sleep(void) { //Normal sleep mode for PCON: LPC_PMU->PCON &= ~0x03; //Normal sleep mode for ARM core: SCB->SCR = 0; //And go to sleep __WFI(); } //Deepsleep/powerdown modes assume the device is configured to use its internal RC oscillator directly #ifdef DEEPSLEEP void deepsleep(void) { //Deep sleep in PCON LPC_PMU->PCON &= ~0x03; LPC_PMU->PCON |= 0x01; //If brownout detection and WDT are enabled, keep them enabled during sleep LPC_SYSCON->PDSLEEPCFG = LPC_SYSCON->PDRUNCFG; //After wakeup same stuff as currently enabled: LPC_SYSCON->PDAWAKECFG = LPC_SYSCON->PDRUNCFG; //All interrupts may wake up: LPC_SYSCON->STARTERP0 = 0xFF; LPC_SYSCON->STARTERP1 = 0xFFFF; //Deep sleep for ARM core: SCB->SCR = 1<<2; __WFI(); } #endif #ifdef POWERDOWN void deepsleep(void) { //Powerdown in PCON LPC_PMU->PCON &= ~0x03; LPC_PMU->PCON |= 0x02; //If brownout detection and WDT are enabled, keep them enabled during sleep LPC_SYSCON->PDSLEEPCFG = LPC_SYSCON->PDRUNCFG; //After wakeup same stuff as currently enabled: LPC_SYSCON->PDAWAKECFG = LPC_SYSCON->PDRUNCFG; //All interrupts may wake up: LPC_SYSCON->STARTERP0 = 0xFF; LPC_SYSCON->STARTERP1 = 0xFFFF; //Deep sleep for ARM core: SCB->SCR = 1<<2; __WFI(); } #endif