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mbed-dev/targets/TARGET_NXP/TARGET_LPC13XX/sleep.c@18:6a4db94011d3, 2017-05-14 (annotated)
- Committer:
- sahilmgandhi
- Date:
- Sun May 14 23:18:57 2017 +0000
- Revision:
- 18:6a4db94011d3
Publishing again
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| sahilmgandhi | 18:6a4db94011d3 | 1 | /* mbed Microcontroller Library |
| sahilmgandhi | 18:6a4db94011d3 | 2 | * Copyright (c) 2006-2013 ARM Limited |
| sahilmgandhi | 18:6a4db94011d3 | 3 | * |
| sahilmgandhi | 18:6a4db94011d3 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| sahilmgandhi | 18:6a4db94011d3 | 5 | * you may not use this file except in compliance with the License. |
| sahilmgandhi | 18:6a4db94011d3 | 6 | * You may obtain a copy of the License at |
| sahilmgandhi | 18:6a4db94011d3 | 7 | * |
| sahilmgandhi | 18:6a4db94011d3 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| sahilmgandhi | 18:6a4db94011d3 | 9 | * |
| sahilmgandhi | 18:6a4db94011d3 | 10 | * Unless required by applicable law or agreed to in writing, software |
| sahilmgandhi | 18:6a4db94011d3 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| sahilmgandhi | 18:6a4db94011d3 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| sahilmgandhi | 18:6a4db94011d3 | 13 | * See the License for the specific language governing permissions and |
| sahilmgandhi | 18:6a4db94011d3 | 14 | * limitations under the License. |
| sahilmgandhi | 18:6a4db94011d3 | 15 | */ |
| sahilmgandhi | 18:6a4db94011d3 | 16 | #include "sleep_api.h" |
| sahilmgandhi | 18:6a4db94011d3 | 17 | #include "cmsis.h" |
| sahilmgandhi | 18:6a4db94011d3 | 18 | #include "mbed_interface.h" |
| sahilmgandhi | 18:6a4db94011d3 | 19 | |
| sahilmgandhi | 18:6a4db94011d3 | 20 | void hal_sleep(void) { |
| sahilmgandhi | 18:6a4db94011d3 | 21 | // PCON[PD] set to sleep |
| sahilmgandhi | 18:6a4db94011d3 | 22 | LPC_PMU->PCON = 0x0; |
| sahilmgandhi | 18:6a4db94011d3 | 23 | |
| sahilmgandhi | 18:6a4db94011d3 | 24 | // SRC[SLEEPDEEP] set to 0 = sleep |
| sahilmgandhi | 18:6a4db94011d3 | 25 | SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk; |
| sahilmgandhi | 18:6a4db94011d3 | 26 | |
| sahilmgandhi | 18:6a4db94011d3 | 27 | // wait for interrupt |
| sahilmgandhi | 18:6a4db94011d3 | 28 | __WFI(); |
| sahilmgandhi | 18:6a4db94011d3 | 29 | } |
| sahilmgandhi | 18:6a4db94011d3 | 30 | |
| sahilmgandhi | 18:6a4db94011d3 | 31 | void hal_deepsleep(void) { |
| sahilmgandhi | 18:6a4db94011d3 | 32 | // PCON[PD] set to deepsleep |
| sahilmgandhi | 18:6a4db94011d3 | 33 | LPC_PMU->PCON = 0x1; |
| sahilmgandhi | 18:6a4db94011d3 | 34 | |
| sahilmgandhi | 18:6a4db94011d3 | 35 | // SRC[SLEEPDEEP] set to 1 = deep sleep |
| sahilmgandhi | 18:6a4db94011d3 | 36 | SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; |
| sahilmgandhi | 18:6a4db94011d3 | 37 | |
| sahilmgandhi | 18:6a4db94011d3 | 38 | // Power up everything after powerdown |
| sahilmgandhi | 18:6a4db94011d3 | 39 | LPC_SYSCON->PDAWAKECFG &= 0xFFFFF800; |
| sahilmgandhi | 18:6a4db94011d3 | 40 | |
| sahilmgandhi | 18:6a4db94011d3 | 41 | // wait for interrupt |
| sahilmgandhi | 18:6a4db94011d3 | 42 | __WFI(); |
| sahilmgandhi | 18:6a4db94011d3 | 43 | } |