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Ticker.cpp
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2013 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #include "drivers/Ticker.h" 00017 00018 #include "drivers/TimerEvent.h" 00019 #include "platform/FunctionPointer.h" 00020 #include "hal/ticker_api.h" 00021 #include "platform/mbed_critical.h" 00022 00023 namespace mbed { 00024 00025 void Ticker::detach() { 00026 core_util_critical_section_enter(); 00027 remove(); 00028 _function = 0; 00029 core_util_critical_section_exit(); 00030 } 00031 00032 void Ticker::setup(us_timestamp_t t) { 00033 core_util_critical_section_enter(); 00034 remove(); 00035 _delay = t; 00036 insert_absolute(_delay + ticker_read_us(_ticker_data)); 00037 core_util_critical_section_exit(); 00038 } 00039 00040 void Ticker::handler() { 00041 insert_absolute(event.timestamp + _delay); 00042 _function(); 00043 } 00044 00045 } // namespace mbed
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