Mbed Library with modified HSE_Startup timeout
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Diff: vendor/NXP/LPC11U24/hal/sleep.c
- Revision:
- 10:3bc89ef62ce7
diff -r 0ce32e54c9a7 -r 3bc89ef62ce7 vendor/NXP/LPC11U24/hal/sleep.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/vendor/NXP/LPC11U24/hal/sleep.c Fri Jun 14 17:49:17 2013 +0100 @@ -0,0 +1,75 @@ +/* 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) { + // ensure debug is disconnected + mbed_interface_disconnect(); + + // PCON[PD] set to sleep + LPC_PMU->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) { + // ensure debug is disconnected + mbed_interface_disconnect(); + + // PCON[PD] set to deepsleep + LPC_PMU->PCON = 0x1; + + // SRC[SLEEPDEEP] set to 1 = deep sleep + SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk; + + // Power up everything after powerdown + LPC_SYSCON->PDAWAKECFG &= 0xFFFFF800; + + // wait for interrupt + __WFI(); +}