/* mbed Microcontroller Library * Copyright (c) 2006-2017 ARM Limited * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #include "rtos/EventFlags.h" #include "rtos/ThisThread.h" #include "mbed_os_timer.h" #include <string.h> #include "mbed_error.h" #include "mbed_assert.h" namespace rtos { EventFlags::EventFlags() { constructor(); } EventFlags::EventFlags(const char *name) { constructor(name); } void EventFlags::constructor(const char *name) { #if MBED_CONF_RTOS_PRESENT osEventFlagsAttr_t attr = { 0 }; attr.name = name ? name : "application_unnamed_event_flags"; attr.cb_mem = &_obj_mem; attr.cb_size = sizeof(_obj_mem); _id = osEventFlagsNew(&attr); MBED_ASSERT(_id); #else _flags = 0; #endif } uint32_t EventFlags::set(uint32_t flags) { #if MBED_CONF_RTOS_PRESENT return osEventFlagsSet(_id, flags); #else return core_util_atomic_fetch_or_u32(&_flags, flags) | flags; #endif } uint32_t EventFlags::clear(uint32_t flags) { #if MBED_CONF_RTOS_PRESENT return osEventFlagsClear(_id, flags); #else return core_util_atomic_fetch_and_u32(&_flags, ~flags); #endif } uint32_t EventFlags::get() const { #if MBED_CONF_RTOS_PRESENT return osEventFlagsGet(_id); #else return core_util_atomic_load_u32(&_flags); #endif } uint32_t EventFlags::wait_all(uint32_t flags, uint32_t millisec, bool clear) { return wait(flags, osFlagsWaitAll, millisec, clear); } uint32_t EventFlags::wait_any(uint32_t flags, uint32_t millisec, bool clear) { return wait(flags, osFlagsWaitAny, millisec, clear); } EventFlags::~EventFlags() { #if MBED_CONF_RTOS_PRESENT osEventFlagsDelete(_id); #endif } uint32_t EventFlags::wait(uint32_t flags, uint32_t opt, uint32_t millisec, bool clear) { if (clear == false) { opt |= osFlagsNoClear; } #if MBED_CONF_RTOS_PRESENT return osEventFlagsWait(_id, flags, opt, millisec); #else rtos::internal::flags_check_capture check; check.flags = &_flags; check.options = opt; check.flags_wanted = flags; check.result = 0; check.match = false; mbed::internal::do_timed_sleep_relative_or_forever(millisec, rtos::internal::non_rtos_check_flags, &check); if (check.match) { return check.result; } else if (millisec == 0) { return osErrorResource; } else { return osErrorTimeout; } #endif } }