mbed library sources
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Diff: targets/hal/TARGET_NXP/TARGET_LPC408X/sleep.c
- Revision:
- 223:d98d59aec21a
- Parent:
- 222:96162ccfbf43
--- a/targets/hal/TARGET_NXP/TARGET_LPC408X/sleep.c Fri Jun 06 11:00:08 2014 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,57 +0,0 @@ -/* 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 "mbed_interface.h" - -void sleep(void) { - LPC_SC->PCON = 0x0; - - // SRC[SLEEPDEEP] set to 0 = sleep - SCB->SCR &= ~SCB_SCR_SLEEPDEEP_Msk; - - // wait for interrupt - __WFI(); -} - -/* -* The mbed lpc1768 does not support the deepsleep mode -* as a debugger is connected to it (the mbed interface). -* -* As mentionned in an application note from NXP: -* -* http://www.po-star.com/public/uploads/20120319123122_141.pdf -* -* {{{ -* The user should be aware of certain limitations during debugging. -* The most important is that, due to limitations of the Cortex-M3 -* integration, the LPC17xx cannot wake up in the usual manner from -* Deep Sleep and Power-down modes. It is recommended not to use these -* modes during debug. Once an application is downloaded via JTAG/SWD -* interface, the USB to SWD/JTAG debug adapter (Keil ULINK2 for example) -* should be removed from the target board, and thereafter, power cycle -* the LPC17xx to allow wake-up from deep sleep and power-down modes -* }}} -* -* As the interface firmware does not reset the target when a -* mbed_interface_disconnect() semihosting call is made, the -* core cannot wake-up from deepsleep. -* -* We treat a deepsleep() as a normal sleep(). -*/ -void deepsleep(void) { - sleep(); -}