mbed library sources. Supersedes mbed-src. removed serial
Fork of mbed-dev by
Diff: targets/hal/TARGET_NXP/TARGET_LPC176X/sleep.c
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 0:9b334a45a8ff
diff -r 423e1876dc07 -r ef7eb2e8f9f7 targets/hal/TARGET_NXP/TARGET_LPC176X/sleep.c --- a/targets/hal/TARGET_NXP/TARGET_LPC176X/sleep.c Tue Aug 02 14:07:36 2016 +0000 +++ b/targets/hal/TARGET_NXP/TARGET_LPC176X/sleep.c Fri Sep 02 15:07:44 2016 +0100 @@ -1,72 +1,72 @@ -/* 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) { - -#if (DEVICE_SEMIHOST == 1) - // ensure debug is disconnected - mbed_interface_disconnect(); -#endif - - // PCON[PD] set to sleep - 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) { - -#if (DEVICE_SEMIHOST == 1) - // ensure debug is disconnected - mbed_interface_disconnect(); -#endif - - // PCON[PD] set to deepsleep - sleep(); -} +/* 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) { + +#if (DEVICE_SEMIHOST == 1) + // ensure debug is disconnected + mbed_interface_disconnect(); +#endif + + // PCON[PD] set to sleep + 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) { + +#if (DEVICE_SEMIHOST == 1) + // ensure debug is disconnected + mbed_interface_disconnect(); +#endif + + // PCON[PD] set to deepsleep + sleep(); +}