mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/hal/TARGET_Freescale/TARGET_KLXX/sleep.c
- Committer:
- mbed_official
- Date:
- 2014-01-31
- Revision:
- 82:0b31dbcd4769
File content as of revision 82:0b31dbcd4769:
/* 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" #include "PeripheralPins.h" //Normal wait mode void sleep(void) { SMC->PMPROT = SMC_PMPROT_AVLLS_MASK | SMC_PMPROT_ALLS_MASK | SMC_PMPROT_AVLP_MASK; //Normal sleep mode for ARM core: SCB->SCR = 0; __WFI(); } //Very low-power stop mode void deepsleep(void) { //Check if PLL/FLL is enabled: uint32_t PLL_FLL_en = (MCG->C1 & MCG_C1_CLKS_MASK) == MCG_C1_CLKS(0); SMC->PMPROT = SMC_PMPROT_AVLLS_MASK | SMC_PMPROT_ALLS_MASK | SMC_PMPROT_AVLP_MASK; SMC->PMCTRL = SMC_PMCTRL_STOPM(2); //Deep sleep for ARM core: SCB->SCR = 1<<SCB_SCR_SLEEPDEEP_Pos; __WFI(); //Switch back to PLL as clock source if needed //The interrupt that woke up the device will run at reduced speed if (PLL_FLL_en) { #ifdef MCG_C5_PLLCLKEN0_MASK //PLL available if (MCG->C6 & (1<<MCG_C6_PLLS_SHIFT) != 0) /* If PLL */ while((MCG->S & MCG_S_LOCK0_MASK) == 0x00U); /* Wait until locked */ #endif MCG->C1 &= ~MCG_C1_CLKS_MASK; } }