Mercurial > public > ostc4
view Discovery/Inc/vpm.h @ 328:4fe5400567e7 I2C_Improvment
Set I2C speed to 88kHz, use digital filter only and reworked idle clock recovery
The errata describes a possible problem in operation between 88kHz and 100kHz => Set speed as recommended as work around.
Based on reference implementation only one filter should be use. Choice was digital because only drawback is lag of wakeup functionality which is not used
I2C communication may be randomly interrupted e.g. by a RTE reset or firmware update => reworked recovery function to get I2C devices in idle state again (Clk and SDA HIGH)
author | ideenmodellierer |
---|---|
date | Wed, 17 Jul 2019 22:42:15 +0200 |
parents | bfcea6e2ab3f |
children |
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/////////////////////////////////////////////////////////////////////////////// /// -*- coding: UTF-8 -*- /// /// \file Discovery/Inc/vpm.h /// \brief Varying Permeability Model (VPM) Decompression Program /// \author Heinrichs Weikamp /// \date 23.04.2013 /// /// $Id$ /////////////////////////////////////////////////////////////////////////////// /// \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/>. ////////////////////////////////////////////////////////////////////////////// #ifndef VPM_H #define VPM_H #include "buehlmann.h" #include "data_central.h" extern long vpm_time_calc_begin; enum DECOLIST{DECOSTOPS,FUTURESTOPS,BAILOUTSTOPS, OFF = -1}; // order is important!! enum VPM_CALC_STATUS{CALC_END, CALC_BEGIN, CALC_CRITICAL, CALC_FINAL_DECO, CALC_NDL }; 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); int vpm_calc(SLifeData* pINPUT, SDiveSettings* diveSettings, SVpm* pVPM, SDecoinfo* pDECOINFO, int calc_what); void vpm_saturation_after_ascent(SLifeData* input); extern const float helium_time_constant[16]; extern const float nitrogen_time_constant[16]; float vpm_get_CNS(void); #endif /* VPM_H */