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Diffstat (limited to 'CAN-binder/low-can-binding/utils/timer.cpp')
-rw-r--r-- | CAN-binder/low-can-binding/utils/timer.cpp | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/CAN-binder/low-can-binding/utils/timer.cpp b/CAN-binder/low-can-binding/utils/timer.cpp deleted file mode 100644 index f3cdd5e..0000000 --- a/CAN-binder/low-can-binding/utils/timer.cpp +++ /dev/null @@ -1,129 +0,0 @@ -/* - * Copyright (C) 2015, 2016 "IoT.bzh" - * Author "Romain Forlot" <romain.forlot@iot.bzh> - * - * 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 <time.h> -#include <stdlib.h> -#include <cmath> - -#include "timer.hpp" - -long long int system_time_us() -{ - struct timespec t_usec; - long long int timestamp_usec = 0; - - if(!::clock_gettime(CLOCK_MONOTONIC, &t_usec)) - timestamp_usec = (t_usec.tv_nsec / 1000ll) + (t_usec.tv_sec* 1000000ll); - return timestamp_usec; -} - -long long int system_time_ms() -{ - struct timespec t_msec; - long long int timestamp_msec = 0; - - if(!::clock_gettime(CLOCK_MONOTONIC, &t_msec)) - timestamp_msec = (t_msec.tv_nsec / 1000000ll) + (t_msec.tv_sec* 1000ll); - return timestamp_msec; -} - -long long int system_time_s() -{ - struct timespec t_sec; - long long int timestamp_sec = 0; - - if(!::clock_gettime(CLOCK_MONOTONIC, &t_sec)) - timestamp_sec = t_sec.tv_sec; - return timestamp_sec; -} - -frequency_clock_t::frequency_clock_t() - : unit_{1000000}, frequency_{10.0}, last_tick_{0}, time_function_{nullptr} -{} - -frequency_clock_t::frequency_clock_t(float frequency) - : unit_{1000000}, frequency_{frequency}, last_tick_{0}, time_function_{nullptr} -{ - if(frequency_ <= 0) - frequency_ = 1; -} - -frequency_clock_t::frequency_clock_t(float frequency, uint64_t last_tick, time_function_t time_function) - : unit_{1000000}, frequency_{frequency}, last_tick_{0}, time_function_{nullptr} -{ - if(frequency_ <= 0) - frequency_ = 1; -} - -/// @brief Return the period in ms given the frequency in hertz. -/// @param[in] frequency - Frequency to convert, in hertz -float frequency_clock_t::frequency_to_period() const -{ - return frequency_ == 0 ? 0 : 1 / frequency_; -} - -/// @brief Return a timeval struct based on the frequency_ member. used to -/// specified CAN BCM timers. -const struct timeval frequency_clock_t::get_timeval_from_period() const -{ - struct timeval freq = {0, 0}; - float f; - freq.tv_usec = (long int)(std::modf(frequency_to_period(), &f) * unit_); - freq.tv_sec = (time_t)f; - - return freq; -} - -bool frequency_clock_t::started() -{ - return last_tick_ != 0; -} - -time_function_t frequency_clock_t::get_time_function() -{ - return time_function_ != nullptr ? time_function_ : system_time_us; -} - -bool frequency_clock_t::elapsed(bool stagger) -{ - float period = frequency_to_period(); - float elapsed_time = 0; - if(!started() && stagger) - last_tick_ = get_time_function()() - (rand() % int(period)); - - // Make sure it ticks the the first call - elapsed_time = !started() ? period : (float)get_time_function()() - (float)last_tick_; - - return frequency_ == 0 || elapsed_time >= period; -} - -float frequency_clock_t::get_frequency() const -{ - return frequency_; -} - -uint64_t frequency_clock_t::get_last_tick() const -{ - return last_tick_; -} - -/// @brief Force the clock to tick, regardless of it its time has actually -/// elapsed. -void frequency_clock_t::tick(uint64_t timestamp) -{ - last_tick_ = timestamp; -}
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