view Discovery/Src/timer.c @ 409:2e2d34c1cc99 Improment_NVM

Restore last known date: After a power off RTC looses time data and restarts in the year 2000. Code will fix this date to the year 2016. This change will set the date to the last known date of the operation hour counter
author ideenmodellierer
date Sun, 12 Jan 2020 19:55:22 +0100
parents ddbe8bed5096
children 2c49561c8062
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///////////////////////////////////////////////////////////////////////////////
/// -*- coding: UTF-8 -*-
///
/// \file   Discovery/Src/timer.c
/// \brief  Contains timer related functionality like stopwatch and security stop
/// \author Peter Ryser & heinrichs weikamp gmbh
/// \date   5. Feb.2015 (maybe)
///
/// \details
///
/// $Id$
///////////////////////////////////////////////////////////////////////////////
/// \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh
///
///     This program is free software: you can redistribute it and/or modify
///     it under the terms of the GNU General Public License as published by
///     the Free Software Foundation, either version 3 of the License, or
///     (at your option) any later version.
///
///     This program is distributed in the hope that it will be useful,
///     but WITHOUT ANY WARRANTY; without even the implied warranty of
///     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
///     GNU General Public License for more details.
///
///     You should have received a copy of the GNU General Public License
///     along with this program.  If not, see <http://www.gnu.org/licenses/>.
//////////////////////////////////////////////////////////////////////////////

#include "data_central.h"

static _Bool bStopWatch = false;
static float stopWatchAverageDepth_Meter = 0.0f;
static long safetyStopCountDown_Second = 0;
static long stopWatchOffset = 0;

void timer_init(void)
{
  stopWatchAverageDepth_Meter = 0.0f;
  bStopWatch = true;
  safetyStopCountDown_Second = 0;
  stopWatchOffset = 0;
}

void timer_UpdateSecond(_Bool checkOncePerSecond)
{
    static int last_second = -1;
    static _Bool bSafetyStop = false;
    static float last_depth_meter = 0;
    long stopWatchTime_Second = 0;

    if(checkOncePerSecond)
    {
        int now =  current_second();
        if( last_second == now)
            return;
        last_second = now;
    }

    /** Stopwatch **/
    stopWatchTime_Second = stateUsed->lifeData.dive_time_seconds_without_surface_time - stopWatchOffset;
    if(bStopWatch && !is_ambient_pressure_close_to_surface(&stateUsedWrite->lifeData))
    {
        if(stopWatchTime_Second == 0)
            stopWatchAverageDepth_Meter = stateUsed->lifeData.depth_meter;
        else
            stopWatchAverageDepth_Meter = (stopWatchAverageDepth_Meter * stopWatchTime_Second + stateUsed->lifeData.depth_meter)/ (stopWatchTime_Second + 1);
    }

    /** SafetyStop **/
    float depthToStopSafetyStopCount;
    if(settingsGetPointer()->safetystopDuration && (stateUsed->lifeData.max_depth_meter > 10.0f) && (stateUsed->lifeData.dive_time_seconds > 60))
    {

        //No deco when 10 meters are crossed from below => Activate SecurityStop
        if( last_depth_meter > 10.0f && stateUsed->lifeData.depth_meter <= 10.0f)
        {
            if(stateUsed->diveSettings.deco_type.ub.standard == GF_MODE)
            {
                if(stateUsed->decolistBuehlmann.output_ndl_seconds >  0)
                    bSafetyStop = true;
            }
            else
            {
                if(stateUsed->decolistVPM.output_ndl_seconds >  0)
                    bSafetyStop = true;
            }
        }

        //Countdown starts at 5 meters
        if(bSafetyStop && (stateUsed->lifeData.depth_meter - 0.0001f <= (settingsGetPointer()->safetystopDepth) ))
        {
            if(safetyStopCountDown_Second == 0)
            {
                safetyStopCountDown_Second = (settingsGetPointer()->safetystopDuration) * 60;
            }
            else
                safetyStopCountDown_Second--;
        }

        // after safetystopDuration minutes or below 3 (2) meter safetyStop is disabled
        if(settingsGetPointer()->safetystopDepth == 3)
            depthToStopSafetyStopCount = 1.999f; // instead of 2
        else
            depthToStopSafetyStopCount = 2.999f;// instead of 3

        if((safetyStopCountDown_Second == 1) || (stateUsed->lifeData.depth_meter <= depthToStopSafetyStopCount))
        {
            bSafetyStop = false;
            safetyStopCountDown_Second = 0;
        }
    }
    else
    {
        bSafetyStop = false;
        safetyStopCountDown_Second = 0;
    }
    last_depth_meter = stateUsed->lifeData.depth_meter;
}


void timer_Stopwatch_Restart(void)
{
  stopWatchAverageDepth_Meter = stateUsed->lifeData.depth_meter;
  bStopWatch = true;
  stopWatchOffset = stateUsed->lifeData.dive_time_seconds_without_surface_time;
}

void timer_Stopwatch_Stop(void)
{
   bStopWatch = false;
}

long timer_Stopwatch_GetTime(void)
{
  return stateUsed->lifeData.dive_time_seconds_without_surface_time - stopWatchOffset;
}

float timer_Stopwatch_GetAvarageDepth_Meter(void)
{
  return stopWatchAverageDepth_Meter;
}

long timer_Safetystop_GetCountDown(void)
{
  return safetyStopCountDown_Second;
}

uint8_t timer_Safetystop_GetDepthUpperLimit(void)
{
    if(settingsGetPointer()->safetystopDepth == 3)
        return 2;
    else
        return 3;
}