view Discovery/Src/timer.c @ 592:f52bc70e380f

MotionCtrl - Sectorview Map sectors directly to custom views: In previous version detection of sector changes lead to a button event which triggered the change of the shown custom view. As result the views shown were depending on the angle which is present while entering focus state. The new implementation maps the primary view to the center sector and assigns the other enabled views around the center => views will always appear at the same angle value.
author Ideenmodellierer
date Sun, 03 Jan 2021 14:43:16 +0100
parents 2c49561c8062
children aa6006975e76
line wrap: on
line source

///////////////////////////////////////////////////////////////////////////////
/// -*- 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;
    static uint8_t safetyStopResetCnt = 0;
    static uint16_t safetyStopRestartCnt = 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;
            }
        }

        /* Has the diver left safety stop depth (descend)? => need to restart safety stop timer? */
        if(safetyStopCountDown_Second != 0)
        {
        	if(stateUsed->lifeData.depth_meter >= (settingsGetPointer()->safetystopDepth + 2.0))
        	{
        		safetyStopRestartCnt = safetyStopCountDown_Second;
        		safetyStopCountDown_Second = 0;
        		safetyStopResetCnt = 60;			/* restart safety stop from scratch if depth is left for more than one minute */
        	}
        }
        else if(safetyStopResetCnt)
        {
        	safetyStopResetCnt--;
        	if(safetyStopResetCnt == 0)
        	{
        		safetyStopRestartCnt = 0;
        	}
        }

        //Countdown starts at 5 meters
        if(bSafetyStop && (stateUsed->lifeData.depth_meter - 0.0001f <= (settingsGetPointer()->safetystopDepth) ))
        {
            if(safetyStopCountDown_Second == 0)
            {
            	if(safetyStopRestartCnt)		/* just a short interrupt of the safetystop => continue using old count */
            	{
            		safetyStopCountDown_Second = safetyStopRestartCnt;
            		safetyStopRestartCnt = 0;
            	}
            	else							/* setup safety stop duration */
            	{
            		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;
}