From 32e25cbca210a359b09768537b6f443fe90a3070 Mon Sep 17 00:00:00 2001 From: Romain Forlot Date: Tue, 20 Jun 2017 10:24:05 +0000 Subject: Separation Generator to a dedicated repo Change-Id: Id94831651c3266861435272a6e36c7884bef2c45 Signed-off-by: Romain Forlot --- low-can-binding/utils/timer.hpp | 58 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 low-can-binding/utils/timer.hpp (limited to 'low-can-binding/utils/timer.hpp') diff --git a/low-can-binding/utils/timer.hpp b/low-can-binding/utils/timer.hpp new file mode 100644 index 00000000..a667022a --- /dev/null +++ b/low-can-binding/utils/timer.hpp @@ -0,0 +1,58 @@ +/* + * Copyright (C) 2015, 2016 "IoT.bzh" + * Author "Romain Forlot" + * + * 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. + */ + +#pragma once + +#include +#include + +/// @brief return epoch in milliseconds +/// +/// @return long long int epoch in milliseconds +typedef long long int (*time_function_t)(); + +long long int system_time_us(); +long long int system_time_ms(); +long long int system_time_s(); + + +/// @brief A frequency counting clock. +/// Utility class allowing some time function. +class frequency_clock_t +{ +private: + float unit_; ///< unit_ - multiplicator to make operation to be in the right unit (milli, micro, nano, etc) + float frequency_; ///< the clock frequency in Hz. + uint64_t last_tick_; ///< the last time (in microseconds since startup) that the clock ticked. + time_function_t time_function_; ///< a function returning current time + +public: + frequency_clock_t(); + explicit frequency_clock_t(float frequency); + frequency_clock_t(float frequency, uint64_t last_tick, time_function_t time_function); + + float get_frequency() const; + const struct timeval get_timeval_from_period() const; + + float frequency_to_period() const; + bool started(); + time_function_t get_time_function(); + bool elapsed(bool stagger); + + uint64_t get_last_tick() const; + void tick(uint64_t timestamp); +}; \ No newline at end of file -- cgit 1.2.3-korg