annotate Discovery/Inc/vpm.h @ 319:d8e86af78474 fix-version

bugfix: correct packed main version number in dive header This fixes a rather mysterious bug. Users report that up to 1.3.5 beta, a correct version number is shown in libdivecomputer based applications (like in Subsurface, in the extra data tab). Careful examining the code in both libdivecomputer and the firmware shows a subtle error in the bit mask and shift operation to pack a full X.Y.Z.beta version number in 2 bytes (as is available in the dive header) in the firmware end (as the libdivecomputer code looks sane, assuming this is the right way to pack things). Likely, this bug crept in in the conversion from the closed source Keil period into the open source GCC setup of the code base. So its impossible to document the exact history of this problem here. Further notice that the main version number is only 1 of 3 version numbers, denoting the full version of the firmware (besides Font and RTE). Finally notice that this way of packing is limited to 2^5 bits (decimal 32), so we could easily build a 1.4.21, but not a 1.4.55. Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
author Jan Mulder <jlmulder@xs4all.nl>
date Wed, 19 Jun 2019 14:31:50 +0200
parents bfcea6e2ab3f
children d4622533271d
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1 ///////////////////////////////////////////////////////////////////////////////
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2 /// -*- coding: UTF-8 -*-
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3 ///
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4 /// \file Discovery/Inc/vpm.h
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5 /// \brief Varying Permeability Model (VPM) Decompression Program
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6 /// \author Heinrichs Weikamp
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7 /// \date 23.04.2013
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8 ///
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9 /// $Id$
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10 ///////////////////////////////////////////////////////////////////////////////
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11 /// \par Copyright (c) 2014-2018 Heinrichs Weikamp gmbh
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12 ///
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13 /// This program is free software: you can redistribute it and/or modify
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14 /// it under the terms of the GNU General Public License as published by
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15 /// the Free Software Foundation, either version 3 of the License, or
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16 /// (at your option) any later version.
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17 ///
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18 /// This program is distributed in the hope that it will be useful,
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19 /// but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 /// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 /// GNU General Public License for more details.
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22 ///
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23 /// You should have received a copy of the GNU General Public License
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24 /// along with this program. If not, see <http://www.gnu.org/licenses/>.
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25 //////////////////////////////////////////////////////////////////////////////
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26
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27 #ifndef VPM_H
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28 #define VPM_H
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29
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30 #include "buehlmann.h"
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31 #include "data_central.h"
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32
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33 extern long vpm_time_calc_begin;
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34 enum DECOLIST{DECOSTOPS,FUTURESTOPS,BAILOUTSTOPS, OFF = -1}; // order is important!!
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bfcea6e2ab3f translate: nullzeit -> ndl
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35 enum VPM_CALC_STATUS{CALC_END, CALC_BEGIN, CALC_CRITICAL, CALC_FINAL_DECO, CALC_NDL };
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37 float schreiner_equation__2(float *initial_inspired_gas_pressure,float *rate_change_insp_gas_pressure,float *interval_time_minutes, const float *gas_time_constant,float *initial_gas_pressure);
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39 int vpm_calc(SLifeData* pINPUT, SDiveSettings* diveSettings, SVpm* pVPM, SDecoinfo* pDECOINFO, int calc_what);
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40 void vpm_saturation_after_ascent(SLifeData* input);
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41 extern const float helium_time_constant[16];
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42 extern const float nitrogen_time_constant[16];
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44 float vpm_get_CNS(void);
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47 #endif /* VPM_H */