N2kTimer.cpp

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/*
 * N2kTimer.cpp
 * 
 * Copyright (c) 2022-2024 Timo Lappalainen, Kave Oy, www.kave.fi
 *
 * 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 "N2kTimer.h"
 
uint64_t tN2kSyncScheduler::SyncOffset=0;
 
// *****************************************************************************
#if defined(ARDUINO_ARCH_ESP32) || defined(ESP_PLATFORM)
  // N2kMillis64() and N2kMillis() as inline on header
#elif defined(__linux__) || defined(__linux) || defined(linux)
  #include <time.h>
  uint64_t N2kMillis64() {
    struct timespec ticker;
 
    clock_gettime(CLOCK_MONOTONIC, &ticker);
    return (((uint64_t)ticker.tv_sec * 1000) + (ticker.tv_nsec / 1000000));
  }
uint32_t N2kMillis() { return N2kMillis64(); }
#else 
  #if defined(ARDUINO)
    // N2kMillis() as inline on header
  #else
    extern "C" {
    // Current uptime in milliseconds. Must be implemented by application.
    extern uint32_t millis();
    }
    uint32_t N2kMillis() { return millis(); }
  #endif
 
  uint64_t N2kMillis64() {
    static uint32_t RollCount=0;
    static uint32_t LastRead=0;
    uint32_t Now=millis();
    if ( LastRead>Now ) RollCount++;
    LastRead=Now;
    return ((uint64_t)RollCount)<<32 | Now;
  }
#endif
 
#if !defined(N2kUse64bitSchedulerTime)
// *****************************************************************************
tN2kSchedulerTime tN2kScheduler::Now() {
  return N2kMillis();
}
#endif