USB Serial application
Fork of USBSerial_HelloWorld by
mbed-dev/targets/TARGET_Freescale/TARGET_KLXX/sleep.c@10:41552d038a69, 2017-01-10 (annotated)
- Committer:
- Zaitsev
- Date:
- Tue Jan 10 20:42:26 2017 +0000
- Revision:
- 10:41552d038a69
USB Serial bi-directional bridge
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Zaitsev | 10:41552d038a69 | 1 | /* mbed Microcontroller Library |
Zaitsev | 10:41552d038a69 | 2 | * Copyright (c) 2006-2013 ARM Limited |
Zaitsev | 10:41552d038a69 | 3 | * |
Zaitsev | 10:41552d038a69 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
Zaitsev | 10:41552d038a69 | 5 | * you may not use this file except in compliance with the License. |
Zaitsev | 10:41552d038a69 | 6 | * You may obtain a copy of the License at |
Zaitsev | 10:41552d038a69 | 7 | * |
Zaitsev | 10:41552d038a69 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
Zaitsev | 10:41552d038a69 | 9 | * |
Zaitsev | 10:41552d038a69 | 10 | * Unless required by applicable law or agreed to in writing, software |
Zaitsev | 10:41552d038a69 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
Zaitsev | 10:41552d038a69 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
Zaitsev | 10:41552d038a69 | 13 | * See the License for the specific language governing permissions and |
Zaitsev | 10:41552d038a69 | 14 | * limitations under the License. |
Zaitsev | 10:41552d038a69 | 15 | */ |
Zaitsev | 10:41552d038a69 | 16 | #include "sleep_api.h" |
Zaitsev | 10:41552d038a69 | 17 | #include "cmsis.h" |
Zaitsev | 10:41552d038a69 | 18 | #include "PeripheralPins.h" |
Zaitsev | 10:41552d038a69 | 19 | |
Zaitsev | 10:41552d038a69 | 20 | //Normal wait mode |
Zaitsev | 10:41552d038a69 | 21 | void sleep(void) |
Zaitsev | 10:41552d038a69 | 22 | { |
Zaitsev | 10:41552d038a69 | 23 | SMC->PMPROT = SMC_PMPROT_AVLLS_MASK | SMC_PMPROT_ALLS_MASK | SMC_PMPROT_AVLP_MASK; |
Zaitsev | 10:41552d038a69 | 24 | |
Zaitsev | 10:41552d038a69 | 25 | //Normal sleep mode for ARM core: |
Zaitsev | 10:41552d038a69 | 26 | SCB->SCR = 0; |
Zaitsev | 10:41552d038a69 | 27 | __WFI(); |
Zaitsev | 10:41552d038a69 | 28 | } |
Zaitsev | 10:41552d038a69 | 29 | |
Zaitsev | 10:41552d038a69 | 30 | //Very low-power stop mode |
Zaitsev | 10:41552d038a69 | 31 | void deepsleep(void) |
Zaitsev | 10:41552d038a69 | 32 | { |
Zaitsev | 10:41552d038a69 | 33 | //Check if ADC is enabled and HS mode is set, if yes disable it (lowers power consumption by 60uA) |
Zaitsev | 10:41552d038a69 | 34 | uint8_t ADC_HSC = 0; |
Zaitsev | 10:41552d038a69 | 35 | if (SIM->SCGC6 & SIM_SCGC6_ADC0_MASK) { |
Zaitsev | 10:41552d038a69 | 36 | if (ADC0->CFG2 & ADC_CFG2_ADHSC_MASK) { |
Zaitsev | 10:41552d038a69 | 37 | ADC_HSC = 1; |
Zaitsev | 10:41552d038a69 | 38 | ADC0->CFG2 &= ~(ADC_CFG2_ADHSC_MASK); |
Zaitsev | 10:41552d038a69 | 39 | } |
Zaitsev | 10:41552d038a69 | 40 | } |
Zaitsev | 10:41552d038a69 | 41 | |
Zaitsev | 10:41552d038a69 | 42 | #if ! defined(TARGET_KL43Z) |
Zaitsev | 10:41552d038a69 | 43 | //Check if PLL/FLL is enabled: |
Zaitsev | 10:41552d038a69 | 44 | uint32_t PLL_FLL_en = (MCG->C1 & MCG_C1_CLKS_MASK) == MCG_C1_CLKS(0); |
Zaitsev | 10:41552d038a69 | 45 | #endif |
Zaitsev | 10:41552d038a69 | 46 | |
Zaitsev | 10:41552d038a69 | 47 | SMC->PMPROT = SMC_PMPROT_AVLLS_MASK | SMC_PMPROT_ALLS_MASK | SMC_PMPROT_AVLP_MASK; |
Zaitsev | 10:41552d038a69 | 48 | SMC->PMCTRL = SMC_PMCTRL_STOPM(2); |
Zaitsev | 10:41552d038a69 | 49 | |
Zaitsev | 10:41552d038a69 | 50 | //Deep sleep for ARM core: |
Zaitsev | 10:41552d038a69 | 51 | SCB->SCR = 1<<SCB_SCR_SLEEPDEEP_Pos; |
Zaitsev | 10:41552d038a69 | 52 | |
Zaitsev | 10:41552d038a69 | 53 | __WFI(); |
Zaitsev | 10:41552d038a69 | 54 | |
Zaitsev | 10:41552d038a69 | 55 | #if ! defined(TARGET_KL43Z) |
Zaitsev | 10:41552d038a69 | 56 | //Switch back to PLL as clock source if needed |
Zaitsev | 10:41552d038a69 | 57 | //The interrupt that woke up the device will run at reduced speed |
Zaitsev | 10:41552d038a69 | 58 | if (PLL_FLL_en) { |
Zaitsev | 10:41552d038a69 | 59 | #ifdef MCG_C5_PLLCLKEN0_MASK //PLL available |
Zaitsev | 10:41552d038a69 | 60 | if (MCG->C6 & (1<<MCG_C6_PLLS_SHIFT) != 0) /* If PLL */ |
Zaitsev | 10:41552d038a69 | 61 | while((MCG->S & MCG_S_LOCK0_MASK) == 0x00U); /* Wait until locked */ |
Zaitsev | 10:41552d038a69 | 62 | #endif |
Zaitsev | 10:41552d038a69 | 63 | MCG->C1 &= ~MCG_C1_CLKS_MASK; |
Zaitsev | 10:41552d038a69 | 64 | } |
Zaitsev | 10:41552d038a69 | 65 | #endif |
Zaitsev | 10:41552d038a69 | 66 | |
Zaitsev | 10:41552d038a69 | 67 | if (ADC_HSC) { |
Zaitsev | 10:41552d038a69 | 68 | ADC0->CFG2 |= (ADC_CFG2_ADHSC_MASK); |
Zaitsev | 10:41552d038a69 | 69 | } |
Zaitsev | 10:41552d038a69 | 70 | } |