mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
Diff: targets/hal/TARGET_Freescale/TARGET_KLXX/sleep.c
- Revision:
- 82:0b31dbcd4769
diff -r a9456fdf72fa -r 0b31dbcd4769 targets/hal/TARGET_Freescale/TARGET_KLXX/sleep.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/hal/TARGET_Freescale/TARGET_KLXX/sleep.c Fri Jan 31 10:00:06 2014 +0000 @@ -0,0 +1,54 @@ +/* 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; + } + +}