RTC auf true
platform/DeepSleepLock.h
- Committer:
- kevman
- Date:
- 2019-03-13
- Revision:
- 2:7aab896b1a3b
- Parent:
- 0:38ceb79fef03
File content as of revision 2:7aab896b1a3b:
/* mbed Microcontroller Library * Copyright (c) 2017 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. */ #ifndef MBED_DEEPSLEEPLOCK_H #define MBED_DEEPSLEEPLOCK_H #include <limits.h> #include "platform/mbed_power_mgmt.h" #include "platform/mbed_critical.h" namespace mbed { /** \addtogroup platform */ /** @{*/ /** * \defgroup platform_DeepSleepLock DeepSleepLock functions * @{ */ /** RAII object for disabling, then restoring the deep sleep mode * Usage: * @code * * void f() { * // some code here * { * DeepSleepLock lock; * // Code in this block will run with the deep sleep mode locked * } * // deep sleep mode will be restored to their previous state * } * @endcode */ class DeepSleepLock { private: uint16_t _lock_count; public: DeepSleepLock(): _lock_count(1) { sleep_manager_lock_deep_sleep(); } ~DeepSleepLock() { if (_lock_count) { sleep_manager_unlock_deep_sleep(); } } /** Mark the start of a locked deep sleep section */ void lock() { uint16_t count = core_util_atomic_incr_u16(&_lock_count, 1); if (1 == count) { sleep_manager_lock_deep_sleep(); } if (0 == count) { MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_OVERFLOW), "DeepSleepLock overflow (> USHRT_MAX)", count); } } /** Mark the end of a locked deep sleep section */ void unlock() { uint16_t count = core_util_atomic_decr_u16(&_lock_count, 1); if (count == 0) { sleep_manager_unlock_deep_sleep(); } if (count == USHRT_MAX) { core_util_critical_section_exit(); MBED_ERROR1(MBED_MAKE_ERROR(MBED_MODULE_PLATFORM, MBED_ERROR_CODE_UNDERFLOW), "DeepSleepLock underflow (< 0)", count); } } }; /**@}*/ /**@}*/ } #endif