Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 694:921f253117e4 deco_spike
deco-spike-01.patch
| author | heinrichsweikamp |
|---|---|
| date | Wed, 13 Feb 2013 07:54:41 +0100 |
| parents | 6e456a6398e0 |
| children |
| rev | line source |
|---|---|
| 116 | 1 // ************************************************************** |
| 2 // p2_deco.c | |
| 3 // | |
| 4 // Created on: 12.05.2009 | |
| 5 // Author: chsw | |
| 6 // | |
| 7 // ************************************************************** | |
| 8 | |
| 9 ////////////////////////////////////////////////////////////////////////////// | |
| 10 // OSTC - diving computer code | |
| 532 | 11 // Copyright (C) 2011 HeinrichsWeikamp GbR |
| 116 | 12 // |
| 13 // This program is free software: you can redistribute it and/or modify | |
| 14 // it under the terms of the GNU General Public License as published by | |
| 15 // the Free Software Foundation, either version 3 of the License, or | |
| 16 // (at your option) any later version. | |
| 17 // | |
| 18 // This program is distributed in the hope that it will be useful, | |
| 19 // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 21 // GNU General Public License for more details. | |
| 22 // | |
| 23 // You should have received a copy of the GNU General Public License | |
| 24 // along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 25 // | |
| 26 ////////////////////////////////////////////////////////////////////////////// | |
| 27 | |
| 28 // ***************************** | |
| 29 // ** I N T R O D U C T I O N ** | |
| 30 // ***************************** | |
| 31 // | |
| 32 // OSTC | |
| 33 // | |
| 34 // code: | |
| 35 // p2_deco_main_c_v101.c | |
| 36 // part2 of the OSTC code | |
| 37 // code with constant O2 partial pressure routines | |
| 38 // under construction !! | |
| 39 // | |
| 40 // summary: | |
| 41 // decompression routines | |
| 42 // for the OSTC experimental project | |
| 43 // written by Christian Weikamp | |
| 44 // last revision __________ | |
| 45 // comments added _________ | |
| 46 // | |
| 47 // additional files: | |
| 48 // p2_tables_v100.romdata (other files) | |
| 49 // 18f4685_ostc_v100.lkr (linker script) | |
| 50 // | |
| 51 // history: | |
| 52 // 01/03/08 v100: first release candidate | |
| 53 // 03/13/08 v101: start of programming ppO2 code | |
| 54 // 03/13/25 v101a: backup of interrim version with ppO2 calculation | |
| 55 // 03/13/25 v101: open circuit gas change during deco | |
| 56 // 03/13/25 v101: CNS_fraction calculation | |
| 57 // 03/13/26 v101: optimization of tissue calc routines | |
| 58 // 07/xx/08 v102a: debug of bottom time routine | |
| 59 // 09/xx/08 v102d: Gradient Factor Model implemenation | |
| 60 // 10/10/08 v104: renamed to build v103 for v118 stable | |
| 171 | 61 // 10/14/08 v104: integration of char_I_depth_last_deco for Gradient Model |
| 116 | 62 // 03/31/09 v107: integration of FONT Incon24 |
| 63 // 05/23/10 v109: 5 gas changes & 1 min timer | |
| 64 // 07/13/10 v110: cns vault added | |
| 65 // 12/25/10 v110: split in three files (deco.c, main.c, definitions.h) | |
| 163 | 66 // 2011/01/20: [jDG] Create a common file included in ASM and C code. |
| 167 | 67 // 2011/01/23: [jDG] Added read_custom_function(). |
| 203 | 68 // 2011/01/24: [jDG] Make ascenttime an short. No more overflow! |
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69 // 2011/01/25: [jDG] Fusion deco array for both models. |
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70 // 2011/01/25: [jDG] Use CF(54) to reverse deco order. |
| 193 | 71 // 2011/02/11: [jDG] Reworked gradient-factor implementation. |
| 197 | 72 // 2011/02/13: [jDG] CF55 for additional gas switch delay in decoplan. |
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73 // 2011/02/15: [jDG] Fixed inconsistencies introduced by gas switch delays. |
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74 // 2011/03/21: [jDG] Added gas consumption (CF56 & CF57) evaluation for OCR mode. |
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75 // 2011/04/10: [jDG] Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco(). |
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76 // 2011/04/15: [jDG] Store low_depth in 32bits (w/o rounding), for a better stability. |
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77 // 2011/04/25: [jDG] Added 1mn mode for CNS calculation, to allow it for decoplanning. |
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78 // 2011/04/27: [jDG] Fixed char_O_gradient_factor calculation when model uses gradient-factor. |
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79 // 2011/05/02: [jDG] Added "Future TTS" function (CF58). |
| 338 | 80 // 2011/05/17: [jDG] Various cleanups. |
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511
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81 // 2011/08/08: [jDG] Computes CNS during deco planning ascent. |
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82 // 2011/11/24: [jDG] Slightly faster and better NDL computation. |
| 562 | 83 // 2011/12/17: [mH] Remove of the useless debug stuff |
| 561 | 84 // 2012/02/24: [jDG] Remove missed stop bug. |
| 562 | 85 // 2012/02/25: [jDG] Looking for a more stable LOW grad factor reference. |
| 646 | 86 // 2012/09/10: [mH] Fill char_O_deco_time_for_log for logbook write |
| 87 // 2012/10/05: [jDG] Better deco_gas_volumes accuracy (average depth, switch between stop). | |
| 116 | 88 // |
| 167 | 89 // TODO: |
| 90 // + Allow to abort MD2 calculation (have to restart next time). | |
| 91 // | |
| 92 // Literature: | |
| 200 | 93 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 94 // Schr"oder, Kai & Reith, Steffen; 2000; S"attigungsvorg"ange beim Tauchen, das Modell ZH-L16, Funktionsweise von Tauchcomputern; http://www.achim-und-kai.de/kai/tausim/saett_faq |
| 95 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 96 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 97 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 98 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 99 // |
| 100 // | |
| 116 | 101 |
| 102 // ********************* | |
| 103 // ** I N C L U D E S ** | |
| 104 // ********************* | |
| 105 #include <math.h> | |
| 167 | 106 |
| 192 | 107 // *********************************************** |
| 108 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 109 // *********************************************** | |
| 110 | |
| 111 #include "p2_definitions.h" | |
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112 #define TEST_MAIN |
| 509 | 113 #include "../OSTC_code_asm_part1/shared_definitions.h" |
| 192 | 114 |
| 200 | 115 // Water vapour partial pressure in the lumb. |
| 527 | 116 #define ppWater 0.0627 |
| 317 | 117 #define METER_TO_BAR 0.09985 |
| 118 #define BAR_TO_METER 10.0150 // (1.0/METER_TO_BAR) | |
| 200 | 119 |
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120 // Surface security factor |
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121 #define SURFACE_DESAT_FACTOR 0.7042 |
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122 |
| 167 | 123 // ************************* |
| 124 // ** P R O T O T Y P E S ** | |
| 125 // ************************* | |
| 126 | |
| 127 static void calc_hauptroutine(void); | |
| 128 static void calc_nullzeit(void); | |
| 129 | |
| 192 | 130 static void calc_tissue(PARAMETER unsigned char period); |
| 258 | 131 static void calc_limit(void); |
| 192 | 132 |
| 167 | 133 static void clear_tissue(void); |
| 134 static void calc_ascenttime(void); | |
| 135 static void update_startvalues(void); | |
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136 static void clear_deco_table(void); |
| 471 | 137 static unsigned char update_deco_table(void); |
| 192 | 138 |
| 139 static void sim_tissue(PARAMETER unsigned char period); | |
| 140 static void sim_limit(PARAMETER float GF_current); | |
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141 static void sim_extra_time(void); |
| 368 | 142 static void calc_dive_interval(void); |
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143 |
| 167 | 144 static void calc_gradient_factor(void); |
| 145 static void calc_wo_deco_step_1_min(void); | |
| 146 | |
| 147 static void calc_hauptroutine_data_input(void); | |
| 148 static void calc_hauptroutine_update_tissues(void); | |
| 149 static void calc_hauptroutine_calc_deco(void); | |
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150 static void sim_ascent_to_first_stop(void); |
| 167 | 151 |
| 241 | 152 static unsigned char gas_switch_deepest(void); |
| 153 static void gas_switch_set(void); | |
| 217 | 154 |
| 241 | 155 static unsigned char calc_nextdecodepth(void); |
| 116 | 156 |
| 200 | 157 //---- Bank 4 parameters ----------------------------------------------------- |
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158 #ifndef UNIX |
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159 # pragma udata bank4=0x400 |
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160 #endif |
| 116 | 161 |
| 162 static float GF_low; | |
| 163 static float GF_high; | |
| 164 static float GF_delta; | |
| 192 | 165 static float locked_GF_step; // GF_delta / low_depth |
| 166 | |
| 167 static unsigned char temp_depth_limit; | |
| 562 | 168 static unsigned char low_depth; // Depth of deepest stop |
| 171 | 169 |
| 192 | 170 // Simulation context: used to predict ascent. |
| 171 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 172 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 173 |
| 192 | 174 // Real context: what we are doing now. |
| 175 static float calc_lead_tissue_limit; // | |
| 116 | 176 |
| 338 | 177 static unsigned char internal_deco_time[NUM_STOPS]; |
| 178 static unsigned char internal_deco_depth[NUM_STOPS]; | |
| 116 | 179 |
| 180 static float cns_vault; | |
| 339 | 181 static float pres_tissue_N2_vault[NUM_COMP]; |
| 182 static float pres_tissue_He_vault[NUM_COMP]; | |
| 116 | 183 |
| 163 | 184 //---- Bank 5 parameters ----------------------------------------------------- |
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185 #ifndef UNIX |
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186 # pragma udata bank5=0x500 |
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187 #endif |
| 163 | 188 |
| 167 | 189 static unsigned char ci; |
| 116 | 190 static float pres_respiration; |
| 191 static float pres_surface; | |
| 192 static float temp_deco; | |
| 236 | 193 static float ppN2; |
| 200 | 194 static float ppHe; |
| 116 | 195 static float temp_tissue; |
| 200 | 196 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 197 static float He_ratio; // Breathed gas helium ratio. | |
| 198 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 199 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 200 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 201 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 202 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 203 static float var_He_e; // Exposition, for current He tissue. | |
| 509 | 204 static float var_N2_ht; // Half-time for current N2 tissue. |
| 205 static float var_He_ht; // Half-time for current N2 tissue. | |
| 116 | 206 |
| 338 | 207 static float pres_diluent; // new in v.101 |
| 208 static float const_ppO2; // new in v.101 | |
| 116 | 209 |
| 241 | 210 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
| 211 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
| 203 | 212 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 213 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 214 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 215 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 216 static float CNS_fraction; // new in v.101 | |
| 217 static float float_saturation_multiplier; // new in v.101 | |
| 218 static float float_desaturation_multiplier; // new in v.101 | |
| 338 | 219 static float float_deco_distance; // new in v.101 |
| 220 static char flag_in_divemode; // new in v.108 | |
| 167 | 221 |
| 338 | 222 static unsigned char deco_gas_change[NUM_GAS]; // new in v.109 |
| 167 | 223 |
| 163 | 224 //---- Bank 6 parameters ----------------------------------------------------- |
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225 #ifndef UNIX |
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226 # pragma udata bank6=0x600 |
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227 #endif |
| 116 | 228 |
| 339 | 229 float pres_tissue_N2[NUM_COMP]; |
| 230 float pres_tissue_He[NUM_COMP]; | |
| 509 | 231 float sim_pres_tissue_N2[NUM_COMP]; // 16 floats = 64 bytes. |
| 232 float sim_pres_tissue_He[NUM_COMP]; // 16 floats = 64 bytes. | |
| 116 | 233 |
| 163 | 234 //---- Bank 7 parameters ----------------------------------------------------- |
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235 #ifndef UNIX |
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236 # pragma udata bank7=0x700 |
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237 #endif |
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238 |
| 509 | 239 // EMPTY ... |
| 116 | 240 |
| 163 | 241 //---- Bank 8 parameters ----------------------------------------------------- |
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242 #ifndef UNIX |
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243 # pragma udata bank8=0x800 |
| 163 | 244 |
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245 static char md_pi_subst[256]; |
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246 # define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
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247 |
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248 #endif |
| 116 | 249 |
| 163 | 250 //---- Bank 9 parameters ----------------------------------------------------- |
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251 #ifndef UNIX |
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252 # pragma udata bank9=0x900 |
| 116 | 253 |
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254 static char md_state[48]; // DONT MOVE : has to be at the beginning of bank 9 for the asm code!!! |
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255 #endif |
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256 |
| 116 | 257 |
| 167 | 258 ////////////////////////////////////////////////////////////////////////////// |
| 259 ////////////////////////////////////////////////////////////////////////////// | |
| 260 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 261 ////////////////////////////////////////////////////////////////////////////// | |
| 262 ////////////////////////////////////////////////////////////////////////////// | |
| 263 // | |
| 264 // End of PROM code is 17F00, So push tables on PROM top... | |
| 265 // | |
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266 #ifndef UNIX |
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267 # pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. |
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268 #endif |
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269 |
| 167 | 270 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) |
| 116 | 271 |
| 167 | 272 // Magic table to compute the MD2 HASH |
| 273 // | |
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274 #ifndef UNIX |
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275 # pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... |
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276 rom const rom unsigned short md_pi[] = |
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277 { |
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278 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 |
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279 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA |
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280 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 |
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281 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A |
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282 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 |
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283 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 |
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284 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 |
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285 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 |
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286 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 |
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287 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F |
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288 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 |
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289 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 |
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290 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A |
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291 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 |
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292 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A |
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293 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 |
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294 }; |
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295 #endif |
| 116 | 296 |
| 167 | 297 ////////////////////////////////////////////////////////////////////////////// |
| 298 ////////////////////////////////////////////////////////////////////////////// | |
| 299 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 300 ////////////////////////////////////////////////////////////////////////////// | |
| 301 ////////////////////////////////////////////////////////////////////////////// | |
| 302 // | |
| 116 | 303 // all new in v.102 |
| 304 // moved from 0x0D000 to 0x0C000 in v.108 | |
|
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305 #ifndef UNIX |
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306 # pragma code p2_deco = 0x0C000 |
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307 #endif |
| 116 | 308 |
| 167 | 309 ////////////////////////////////////////////////////////////////////////////// |
| 310 ////////////////////////////////////////////////////////////////////////////// | |
| 311 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 312 ////////////////////////////////////////////////////////////////////////////// | |
| 313 ////////////////////////////////////////////////////////////////////////////// | |
| 314 | |
| 235 | 315 ////////////////////////////////////////////////////////////////////////////// |
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316 // Bump to blue-screen when an assert is wrong |
| 235 | 317 #ifdef __DEBUG |
| 318 void assert_failed(PARAMETER short int line) | |
| 319 { | |
| 681 | 320 extern void DISP_resetdebugger(void); |
| 235 | 321 extern unsigned short temp10; |
| 322 | |
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323 temp10 = line; // Show source line number as stack depth. |
| 681 | 324 DISP_resetdebugger(); |
| 235 | 325 } |
| 326 #endif | |
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327 |
| 235 | 328 ////////////////////////////////////////////////////////////////////////////// |
| 329 // When calling C code from ASM context, the data stack pointer and | |
| 330 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
| 331 | |
| 332 #ifdef CROSS_COMPILE | |
| 333 # define RESET_C_STACK | |
| 334 #else | |
| 335 # ifdef __DEBUG | |
| 336 # define RESET_C_STACK fillDataStack(); | |
| 337 void fillDataStack(void) | |
| 338 { | |
| 339 _asm | |
| 340 LFSR 1,C_STACK | |
| 341 MOVLW 0xCC | |
| 342 loop: MOVWF POSTINC1,0 | |
| 343 TSTFSZ FSR1L,0 | |
| 344 BRA loop | |
| 345 | |
| 346 LFSR 1,C_STACK | |
| 347 LFSR 2,C_STACK | |
| 348 _endasm | |
| 349 } | |
| 350 # else | |
| 351 # define RESET_C_STACK \ | |
| 352 _asm \ | |
| 353 LFSR 1, C_STACK \ | |
| 354 LFSR 2, C_STACK \ | |
| 355 _endasm | |
| 356 # endif | |
| 357 #endif | |
| 358 | |
| 359 ////////////////////////////////////////////////////////////////////////////// | |
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360 // Read CF values from the C code. |
| 235 | 361 |
| 488 | 362 #ifdef CROSS_COMPILE |
| 363 // Full description of the OSTC EEPROM map, including CF values. | |
| 364 # include "OSTC_eeprom.h" | |
| 365 #endif | |
| 366 | |
| 203 | 367 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 368 { |
| 184 | 369 #ifdef CROSS_COMPILE |
| 564 | 370 return (cf & 32) ? eeprom.bank1_CF[cf-32].value.lo |
| 371 : eeprom.bank0_CF[cf ].value.lo; | |
| 184 | 372 #else |
| 167 | 373 extern unsigned char hi, lo; |
| 374 extern void getcustom15(); | |
| 375 _asm | |
| 376 movff cf,WREG | |
| 377 call getcustom15,0 | |
| 378 movff lo,PRODL | |
| 379 movff hi,PRODH | |
| 380 _endasm | |
| 184 | 381 #endif |
| 167 | 382 } |
| 383 | |
| 384 ////////////////////////////////////////////////////////////////////////////// | |
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385 // Fast subroutine to read RTC timer 3. |
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386 // Note: result is in 1/32 of msecs. |
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387 static unsigned short tmr3(void) |
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388 { |
| 261 | 389 #ifndef CROSS_COMPILE |
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390 _asm |
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391 movff 0xfb2,PRODL // TMR3L |
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392 movff 0xfb3,PRODH // TMR3H |
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393 _endasm // result in PRODH:PRODL. |
| 261 | 394 #else |
| 395 return 0; | |
| 396 #endif | |
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397 } |
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398 |
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399 ////////////////////////////////////////////////////////////////////////////// |
| 258 | 400 // read buhlmann tables A and B for compatriment ci |
| 401 // | |
| 402 static void read_buhlmann_coefficients(void) | |
| 165 | 403 { |
| 184 | 404 #ifndef CROSS_COMPILE |
| 167 | 405 // Note: we don't use far rom pointer, because the |
| 338 | 406 // 24 bits is too complex, hence we have to set |
| 167 | 407 // the UPPER page ourself... |
| 408 // --> Set zero if tables are moved to lower pages ! | |
| 409 _asm | |
| 410 movlw 1 | |
| 411 movwf TBLPTRU,0 | |
| 412 _endasm | |
| 184 | 413 #endif |
| 258 | 414 |
| 564 | 415 assert( ci < NUM_COMP ); |
| 338 | 416 |
| 417 // Use an interleaved array (AoS) to access coefficients with a | |
| 418 // single addressing. | |
| 419 { | |
| 420 overlay rom const float* ptr = &buhlmann_ab[4*ci]; | |
| 421 var_N2_a = *ptr++; | |
| 422 var_N2_b = *ptr++; | |
| 423 var_He_a = *ptr++; | |
| 424 var_He_b = *ptr++; | |
| 425 } | |
| 258 | 426 } |
| 427 | |
| 428 ////////////////////////////////////////////////////////////////////////////// | |
| 429 // read buhlmann tables for compatriment ci | |
| 430 // If period == 0 : 2sec interval | |
| 431 // 1 : 1 min interval | |
| 432 // 2 : 10 min interval. | |
| 433 static void read_buhlmann_times(PARAMETER char period) | |
| 434 { | |
| 435 #ifndef CROSS_COMPILE | |
| 436 // Note: we don't use far rom pointer, because the | |
| 437 // 24 bits is to complex, hence we have to set | |
| 438 // the UPPER page ourself... | |
| 439 // --> Set zero if tables are moved to lower pages ! | |
| 440 _asm | |
| 441 movlw 1 | |
| 442 movwf TBLPTRU,0 | |
| 443 _endasm | |
| 444 #endif | |
| 338 | 445 |
| 564 | 446 assert( ci < NUM_COMP ); |
| 258 | 447 |
| 165 | 448 // Integration intervals. |
| 167 | 449 switch(period) |
| 165 | 450 { |
| 451 case 0: //---- 2 sec ----------------------------------------------------- | |
| 338 | 452 { |
| 453 overlay rom const float* ptr = &e2secs[2*ci]; | |
| 454 var_N2_e = *ptr++; | |
| 455 var_He_e = *ptr++; | |
| 456 } | |
| 165 | 457 break; |
| 458 | |
| 459 case 1: //---- 1 min ----------------------------------------------------- | |
| 338 | 460 { |
| 461 overlay rom const float* ptr = &e1min[2*ci]; | |
| 462 var_N2_e = *ptr++; | |
| 463 var_He_e = *ptr++; | |
| 464 } | |
| 165 | 465 break; |
| 466 | |
| 467 case 2: //---- 10 min ---------------------------------------------------- | |
| 338 | 468 { |
| 469 overlay rom const float* ptr = &e10min[2*ci]; | |
| 470 var_N2_e = *ptr++; | |
| 471 var_He_e = *ptr++; | |
| 472 } | |
| 165 | 473 break; |
| 197 | 474 |
| 475 default: | |
| 527 | 476 assert(0); // Never go there... |
| 165 | 477 } |
| 478 } | |
| 479 | |
| 480 ////////////////////////////////////////////////////////////////////////////// | |
| 509 | 481 // read buhlmann tables for compatriment ci |
| 482 // | |
| 483 static void read_buhlmann_ht(void) | |
| 484 { | |
| 485 | |
| 486 #ifndef CROSS_COMPILE | |
| 487 // Note: we don't use far rom pointer, because the | |
| 488 // 24 bits is to complex, hence we have to set | |
| 489 // the UPPER page ourself... | |
| 490 // --> Set zero if tables are moved to lower pages ! | |
| 491 _asm | |
| 492 movlw 1 | |
| 493 movwf TBLPTRU,0 | |
| 494 _endasm | |
| 495 #endif | |
| 496 | |
| 564 | 497 assert( ci < NUM_COMP ); |
| 509 | 498 { |
| 499 overlay rom const float* ptr = &buhlmann_ht[2*ci]; | |
| 500 var_N2_ht = *ptr++; | |
| 501 var_He_ht = *ptr++; | |
| 502 } | |
| 503 | |
| 504 assert( 4.0 <= var_N2_ht && var_N2_ht <= 635.0 ); | |
| 505 assert( 1.5099 <= var_He_ht && var_He_ht <= 240.03 ); | |
| 506 } | |
| 507 | |
| 508 ////////////////////////////////////////////////////////////////////////////// | |
|
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509 // calc_nextdecodepth |
| 165 | 510 // |
| 116 | 511 // new in v.102 |
| 165 | 512 // |
| 116 | 513 // INPUT, changing during dive: |
| 509 | 514 // temp_deco |
| 192 | 515 // low_depth |
| 167 | 516 // |
| 116 | 517 // INPUT, fixed during dive: |
| 167 | 518 // pres_surface |
| 519 // GF_delta | |
| 520 // GF_high | |
| 521 // GF_low | |
| 171 | 522 // char_I_depth_last_deco |
| 167 | 523 // float_deco_distance |
| 524 // | |
| 241 | 525 // RETURN TRUE iff a stop is needed. |
| 526 // | |
| 116 | 527 // OUTPUT |
| 171 | 528 // locked_GF_step |
| 167 | 529 // temp_depth_limt |
| 192 | 530 // low_depth |
| 167 | 531 // |
| 241 | 532 static unsigned char calc_nextdecodepth(void) |
| 167 | 533 { |
| 694 | 534 signed short gf_step; |
| 241 | 535 //--- Max ascent speed --------------------------------------------------- |
| 536 // Recompute leading gas limit, at current depth: | |
| 317 | 537 overlay float depth = (temp_deco - pres_surface) * BAR_TO_METER; |
| 241 | 538 |
| 539 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
| 302 | 540 overlay float min_depth = (depth > 10.0) ? (depth - 10.0) : 0.0; |
| 241 | 541 |
| 542 // Do we need to stop at current depth ? | |
| 543 overlay unsigned char need_stop = 0; | |
| 544 | |
| 545 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
| 546 | |
| 212 | 547 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 509 | 548 if( char_I_deco_model != 0 ) |
| 116 | 549 { |
| 562 | 550 overlay unsigned char first_stop = 0; |
| 551 overlay float p; | |
| 552 | |
| 694 | 553 gf_step = (signed short)(low_depth - depth); |
| 554 if (gf_step < 0) | |
| 555 gf_step = 0; | |
| 556 assert(GF_low + (gf_step + char_I_depth_last_deco) * locked_GF_step <= GF_high); | |
| 557 | |
| 558 sim_limit( GF_low + gf_step * locked_GF_step); | |
| 562 | 559 p = sim_lead_tissue_limit - pres_surface; |
| 560 if( p <= 0.0f ) | |
| 561 goto no_deco_stop; // We can surface directly... | |
|
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562 |
| 562 | 563 p *= BAR_TO_METER; |
| 564 if( p < min_depth ) | |
| 565 goto no_deco_stop; // First stop is higher than 1' ascent. | |
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566 |
| 562 | 567 first_stop = 3 * (short)(0.99999 + p*0.333333); |
| 568 assert( first_stop < 128 ); | |
| 569 | |
| 570 // Apply correction for the shallowest stop. | |
| 571 if( first_stop == 3 ) // new in v104 | |
| 572 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 573 |
| 562 | 574 // Store the deepest point needing a deco stop as the LOW reference for GF. |
| 575 // NOTE: following stops will be validated using this LOW-HIGH gf scale, | |
| 576 // so if we want to keep coherency, we should not validate this stop | |
| 568 | 577 // yet, but apply the search to it, as for all the following stops afterward. |
| 562 | 578 if( first_stop > low_depth ) |
| 579 { | |
| 580 low_depth = first_stop; | |
| 568 | 581 locked_GF_step = GF_delta / first_stop; |
| 562 | 582 } |
| 694 | 583 goto deco_stop_found; |
| 171 | 584 |
| 562 | 585 no_deco_stop: |
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586 temp_depth_limit = min_depth; |
| 562 | 587 goto done; |
| 212 | 588 |
| 562 | 589 // next stop is the last validated depth found, aka first_stop |
| 590 deco_stop_found: | |
| 591 need_stop = 1; // Hit. | |
| 592 temp_depth_limit = first_stop; // Stop depth, in meter. | |
| 593 | |
| 594 done: | |
| 595 ; | |
| 116 | 596 } |
| 167 | 597 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 598 { |
| 192 | 599 overlay float pres_gradient; |
| 600 | |
| 601 // Original model | |
| 116 | 602 // optimized in v.101 |
| 171 | 603 // char_I_depth_last_deco included in v.101 |
| 116 | 604 |
| 192 | 605 // Compute sim_lead_tissue_limit too, but just once. |
| 606 sim_limit(1.0); | |
| 607 | |
| 608 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 609 if (pres_gradient >= 0) |
| 116 | 610 { |
| 317 | 611 pres_gradient *= BAR_TO_METER/3; // Bar --> stop number; |
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612 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
| 241 | 613 need_stop = 1; // Hit. |
| 614 | |
| 615 // Implement last stop at 4m/5m/6m... | |
| 616 if( temp_depth_limit == 3 ) | |
| 617 temp_depth_limit = char_I_depth_last_deco; | |
| 171 | 618 } |
| 116 | 619 else |
| 241 | 620 temp_depth_limit = 0; |
| 171 | 621 } |
| 212 | 622 |
| 217 | 623 //---- Check gas change -------------------------------------------------- |
| 241 | 624 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
| 625 | |
| 626 return need_stop; | |
| 167 | 627 } |
| 116 | 628 |
| 167 | 629 ////////////////////////////////////////////////////////////////////////////// |
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630 // copy_deco_table |
| 167 | 631 // |
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632 // Buffer the stops, once computed, so we can continue to display them |
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633 // while computing the next set. |
| 167 | 634 // |
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635 static void copy_deco_table(void) |
| 116 | 636 { |
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637 // Copy depth of the first (deepest) stop, because when reversing |
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638 // order, it will be hard to find... |
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639 char_O_first_deco_depth = internal_deco_depth[0] & 0x7F; |
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640 char_O_first_deco_time = internal_deco_time [0]; |
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641 |
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642 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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643 { |
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644 overlay unsigned char x, y; |
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645 |
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646 //---- First: search the first non-null depth |
| 339 | 647 for(x=(NUM_STOPS-1); x != 0; --x) |
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648 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 649 |
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650 //---- Second: copy to output table (in reverse order) |
| 338 | 651 for(y=0; y<NUM_STOPS; y++, --x) |
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652 { |
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653 char_O_deco_depth[y] = internal_deco_depth[x]; |
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654 char_O_deco_time_for_log[y] = internal_deco_time [x]; |
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655 char_O_deco_time [y] = internal_deco_time [x]; |
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656 |
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657 // Stop only once the last transfer is done. |
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658 if( x == 0 ) break; |
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659 } |
| 116 | 660 |
|
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661 //---- Third: fill table end with null |
| 339 | 662 for(y++; y<NUM_STOPS; y++) |
|
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663 { |
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664 char_O_deco_time [y] = 0; |
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665 char_O_deco_depth[y] = 0; |
|
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666 char_O_deco_time_for_log[y] = 0; |
|
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667 } |
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668 } |
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669 else //---- Straight copy ------------------------------------------------ |
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670 { |
|
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671 overlay unsigned char x, y; |
| 167 | 672 |
| 339 | 673 for(x=0; x<NUM_STOPS; x++) |
|
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674 { |
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675 char_O_deco_depth[x] = internal_deco_depth[x]; |
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676 char_O_deco_time [x] = internal_deco_time [x]; |
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677 } |
|
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678 |
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679 //Now fill the char_O_deco_time_for_log array |
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680 //---- First: search the first non-null depth |
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681 for(x=(NUM_STOPS-1); x != 0; --x) |
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682 if( internal_deco_depth[x] != 0 ) break; |
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683 |
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684 //---- Second: copy to output table (in reverse order) |
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685 for(y=0; y<NUM_STOPS; y++, --x) |
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686 { |
|
633
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687 char_O_deco_time_for_log[y] = internal_deco_time [x]; |
|
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688 |
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689 // Stop only once the last transfer is done. |
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690 if( x == 0 ) break; |
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691 } |
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692 |
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693 //---- Third: fill table end with null |
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694 for(y++; y<NUM_STOPS; y++) |
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695 { |
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696 char_O_deco_time_for_log [y] = 0; |
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697 } |
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698 |
|
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699 } |
| 167 | 700 } |
| 116 | 701 |
| 167 | 702 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 703 // temp_tissue_safety // |
| 167 | 704 // |
| 116 | 705 // outsourced in v.102 |
| 167 | 706 // |
| 707 // Apply safety factors for brand ZH-L16 model. | |
| 708 // | |
| 709 static void temp_tissue_safety(void) | |
| 116 | 710 { |
| 197 | 711 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 712 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 713 | |
| 167 | 714 if( char_I_deco_model == 0 ) |
| 116 | 715 { |
|
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716 if( temp_tissue < 0.0 ) |
| 126 | 717 temp_tissue *= float_desaturation_multiplier; |
| 116 | 718 else |
| 126 | 719 temp_tissue *= float_saturation_multiplier; |
| 116 | 720 } |
| 167 | 721 } |
| 116 | 722 |
| 167 | 723 ////////////////////////////////////////////////////////////////////////////// |
| 724 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 725 // ** THE JUMP-IN CODE ** |
| 726 // ** for the asm code ** | |
| 167 | 727 ////////////////////////////////////////////////////////////////////////////// |
| 728 ////////////////////////////////////////////////////////////////////////////// | |
|
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729 |
| 167 | 730 ////////////////////////////////////////////////////////////////////////////// |
|
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731 // Called every 2 seconds during diving. |
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732 // update tissues every time. |
| 184 | 733 // |
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734 // Every 6 seconds (or slower when TTS > 16): |
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735 // - update deco table (char_O_deco_time/depth) with new values. |
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736 // - update ascent time, |
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737 // - set status to zero (so we can check there is new results). |
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738 // |
| 116 | 739 void deco_calc_hauptroutine(void) |
| 740 { | |
|
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741 RESET_C_STACK |
| 116 | 742 calc_hauptroutine(); |
| 743 int_O_desaturation_time = 65535; | |
| 744 } | |
| 745 | |
| 167 | 746 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 747 // Reset decompression model: |
| 748 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 749 // + Reset last stop to 0m | |
| 750 // + Reset all model output. | |
| 116 | 751 void deco_clear_tissue(void) |
| 752 { | |
|
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753 RESET_C_STACK |
| 116 | 754 clear_tissue(); |
| 755 } | |
| 756 | |
| 167 | 757 ////////////////////////////////////////////////////////////////////////////// |
| 278 | 758 // Called every 1 min during decoplanning. |
| 759 // Update tissues for 1 min. | |
| 760 // | |
| 761 void deco_calc_tissue(void) | |
| 762 { | |
| 763 RESET_C_STACK | |
| 764 calc_hauptroutine_update_tissues(); | |
| 765 } | |
| 766 | |
| 767 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 768 |
| 116 | 769 void deco_calc_wo_deco_step_1_min(void) |
| 770 { | |
|
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771 RESET_C_STACK |
| 116 | 772 calc_wo_deco_step_1_min(); |
| 773 deco_calc_desaturation_time(); | |
| 774 } | |
| 775 | |
| 167 | 776 ////////////////////////////////////////////////////////////////////////////// |
| 777 | |
| 368 | 778 void deco_calc_dive_interval(void) |
| 779 { | |
| 780 RESET_C_STACK | |
| 781 calc_dive_interval(); | |
| 782 } | |
| 783 | |
| 241 | 784 ////////////////////////////////////////////////////////////////////////////// |
| 785 // Find current gas in the list (if any). | |
| 786 // | |
| 513 | 787 // Input: char_I_current_gas = 1..6 |
| 241 | 788 // |
| 513 | 789 // Output: sim_gas_last_depth = 0..5, temp_depth_limit. |
| 241 | 790 // |
| 791 static void gas_switch_find_current(void) | |
| 792 { | |
| 513 | 793 assert( 0 < char_I_current_gas && char_I_current_gas <= (NUM_GAS+1) ); |
|
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794 |
| 388 | 795 if( char_I_current_gas <= NUM_GAS ) // Gas1..Gas5 |
|
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796 { |
| 388 | 797 sim_gas_last_used = char_I_current_gas; |
| 798 | |
| 799 // Note: if current is first gas, we must find it, but not set | |
| 800 // last depth change to surface. | |
| 801 if( char_I_deco_gas_change[sim_gas_last_used-1] ) | |
| 802 sim_gas_last_depth = char_I_deco_gas_change[sim_gas_last_used-1]; | |
| 241 | 803 } |
| 388 | 804 else |
| 805 sim_gas_last_used = 0; // Gas 6 = manual set | |
| 241 | 806 } |
| 807 | |
| 167 | 808 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 809 // Find deepest available gas. |
| 201 | 810 // |
| 241 | 811 // Input: temp_depth_limit, |
| 812 // deco_gas_change[] | |
| 813 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
| 212 | 814 // |
| 241 | 815 // RETURNS TRUE if a stop is needed for gas switch. |
| 816 // | |
| 817 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
| 212 | 818 // |
| 241 | 819 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
| 820 // are null), or during the ascent to make sure we are not passing a | |
| 821 // stop (in which case both can be already set). | |
| 822 // | |
| 823 static unsigned char gas_switch_deepest(void) | |
| 201 | 824 { |
| 241 | 825 overlay unsigned char switch_deco = 0, switch_last = 0; |
| 201 | 826 |
| 827 if (char_I_const_ppO2 == 0) | |
| 828 { | |
| 225 | 829 overlay unsigned char j; |
| 830 | |
| 241 | 831 // Loop over all enabled gas, to find the deepest one, |
|
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832 // above last used gas, but below temp_depth_limit. |
| 338 | 833 for(j=0; j<NUM_GAS; ++j) |
| 225 | 834 { |
| 241 | 835 // Gas not (yet) allowed ? Skip ! |
| 836 if( temp_depth_limit > deco_gas_change[j] ) | |
| 837 continue; | |
| 838 | |
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839 // Gas deeper (or equal) than the current one ? Skip ! |
| 241 | 840 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) |
| 841 continue; | |
| 842 | |
| 843 // First, or deeper ? | |
|
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844 if( switch_deco < deco_gas_change[j] ) |
| 241 | 845 { |
| 846 switch_deco = deco_gas_change[j]; | |
| 388 | 847 switch_last = j+1; // 1..5 |
| 241 | 848 } |
| 225 | 849 } |
| 201 | 850 } |
| 851 | |
| 203 | 852 // If there is a better gas available |
| 241 | 853 if( switch_deco ) |
| 201 | 854 { |
| 646 | 855 unsigned char delay; |
| 856 delay = read_custom_function(55); | |
|
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857 |
| 241 | 858 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
| 201 | 859 |
| 241 | 860 // Should restart gas-switch delay only when gas do changes... |
| 861 assert( sim_gas_delay <= sim_dive_mins ); | |
| 217 | 862 |
| 241 | 863 sim_gas_last_depth = switch_deco; |
| 864 sim_gas_last_used = switch_last; | |
|
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865 sim_gas_delay = delay |
|
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866 + sim_dive_mins; |
| 217 | 867 |
|
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868 if( delay ) |
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869 { |
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870 temp_depth_limit = switch_deco; |
|
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871 return 1; |
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872 } |
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873 else |
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874 return 0; |
| 217 | 875 } |
| 876 | |
| 241 | 877 sim_gas_delay = 0; |
| 878 return 0; | |
| 217 | 879 } |
| 880 | |
| 881 ////////////////////////////////////////////////////////////////////////////// | |
| 882 // Calculate gas switches | |
| 883 // | |
| 884 // | |
| 885 // Input: N2_ratio, He_ratio. | |
| 886 // sim_gas_last_used | |
| 887 // | |
| 888 // Output: calc_N2_ratio, calc_He_ratio | |
| 889 // | |
| 241 | 890 static void gas_switch_set(void) |
| 217 | 891 { |
| 564 | 892 assert( sim_gas_last_used <= NUM_GAS ); |
| 217 | 893 |
| 388 | 894 if( sim_gas_last_used == 0 ) // Gas6 = manualy set gas. |
| 224 | 895 { |
| 896 calc_N2_ratio = N2_ratio; | |
| 897 calc_He_ratio = He_ratio; | |
| 898 } | |
| 899 else | |
| 900 { | |
| 901 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 902 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 903 } |
| 201 | 904 |
| 905 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 906 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 907 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 908 } | |
| 909 | |
| 910 ////////////////////////////////////////////////////////////////////////////// | |
| 911 // | |
| 212 | 912 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 509 | 913 // temp_deco : simulated respiration pressure |
| 276 | 914 // float_deco_distance : security factor. |
|
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915 // Water-vapor pressure inside limbs (ppWater). |
| 212 | 916 // |
| 236 | 917 // Output: ppN2, ppHe. |
| 212 | 918 // |
| 919 static void sim_alveolar_presures(void) | |
| 201 | 920 { |
| 212 | 921 overlay float deco_diluent = temp_deco; // new in v.101 |
| 922 | |
| 276 | 923 // Take deco offset into account, but not at surface. |
| 924 // Note: this should be done on ambiant pressure, hence before | |
| 925 // computing the diluant partial pressure... | |
| 926 if( deco_diluent > pres_surface ) | |
| 927 deco_diluent += float_deco_distance; | |
| 928 | |
| 212 | 929 //---- CCR mode : deco gas switch ? -------------------------------------- |
| 276 | 930 if( char_I_const_ppO2 != 0 ) |
| 201 | 931 { |
| 276 | 932 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
| 933 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
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934 // ppWater in the equations below: |
| 321 | 935 deco_diluent -= const_ppO2; |
| 276 | 936 deco_diluent /= calc_N2_ratio + calc_He_ratio; |
| 212 | 937 |
| 938 if (deco_diluent > temp_deco) | |
| 939 deco_diluent = temp_deco; | |
| 201 | 940 } |
| 941 | |
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942 if( deco_diluent > ppWater ) |
| 201 | 943 { |
|
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944 ppN2 = calc_N2_ratio * (deco_diluent - ppWater); |
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945 ppHe = calc_He_ratio * (deco_diluent - ppWater); |
| 201 | 946 } |
| 947 else | |
| 948 { | |
| 236 | 949 ppN2 = 0.0; |
| 201 | 950 ppHe = 0.0; |
| 951 } | |
| 236 | 952 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 953 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 954 } | |
| 955 | |
| 956 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 957 // clear_tissue |
| 958 // | |
| 165 | 959 // optimized in v.101 (var_N2_a) |
| 167 | 960 // |
| 961 // preload tissues with standard pressure for the given ambient pressure. | |
| 962 // Note: fixed N2_ratio for standard air. | |
| 201 | 963 // |
| 167 | 964 static void clear_tissue(void) |
| 116 | 965 { |
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966 overlay float p; |
| 116 | 967 flag_in_divemode = 0; |
| 968 | |
| 167 | 969 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 970 N2_ratio = 0.7902; | |
| 212 | 971 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 972 |
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973 p = N2_ratio * (pres_respiration - ppWater); |
| 338 | 974 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 975 { |
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976 // cycle through the 16 Bühlmann N2 tissues |
| 339 | 977 pres_tissue_N2[ci] = p; |
| 197 | 978 |
| 979 // cycle through the 16 Bühlmann tissues for Helium | |
| 339 | 980 pres_tissue_He[ci] = 0.0; |
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981 } |
| 116 | 982 |
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983 clear_deco_table(); |
| 126 | 984 char_O_deco_status = 0; |
| 985 char_O_nullzeit = 0; | |
| 168 | 986 int_O_ascenttime = 0; |
| 126 | 987 char_O_gradient_factor = 0; |
| 988 char_O_relative_gradient_GF = 0; | |
| 258 | 989 |
| 990 calc_lead_tissue_limit = 0.0; | |
| 991 char_O_gtissue_no = 0; | |
| 167 | 992 } |
| 116 | 993 |
| 167 | 994 ////////////////////////////////////////////////////////////////////////////// |
| 995 // calc_hauptroutine | |
| 996 // | |
| 997 // this is the major code in dive mode calculates: | |
| 116 | 998 // the tissues, |
| 167 | 999 // the bottom time, |
| 1000 // and simulates the ascend with all deco stops. | |
| 171 | 1001 // |
| 1002 // The deco_state sequence is : | |
| 1003 // 3 (at surface) | |
| 1004 // +---> 0 : calc nullzeit | |
| 1005 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1006 // | +-> 1 : simulate up to 16min of stops. | |
| 1007 // | +------< not finished | |
| 1008 // +--------< finish | |
| 1009 // | |
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1010 // Added steps 6,5 for @+5 calculation: |
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1011 // 6 = ascent to first stop (same as 2), except continue to 7 |
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1012 // 7 = same as 1, except loop to 7. |
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1013 // |
| 167 | 1014 static void calc_hauptroutine(void) |
| 116 | 1015 { |
| 241 | 1016 static unsigned char backup_gas_used = 0; |
| 1017 static unsigned char backup_gas_depth = 0; | |
| 217 | 1018 static unsigned char backup_gas_delay = 0; |
| 186 | 1019 |
| 116 | 1020 calc_hauptroutine_data_input(); |
| 1021 | |
| 1022 calc_hauptroutine_update_tissues(); | |
| 1023 calc_gradient_factor(); | |
| 1024 | |
| 167 | 1025 // toggle between calculation for nullzeit (bottom time), |
| 1026 // deco stops | |
| 1027 // and more deco stops (continue) | |
| 1028 switch( char_O_deco_status ) | |
| 116 | 1029 { |
| 186 | 1030 case 3: //---- At surface: start a new dive ------------------------------ |
| 1031 clear_deco_table(); | |
| 1032 copy_deco_table(); | |
| 200 | 1033 int_O_ascenttime = 0; // Reset DTR. |
| 323 | 1034 int_O_extra_ascenttime = 0; |
| 200 | 1035 char_O_nullzeit = 0; // Reset bottom time. |
| 278 | 1036 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
| 201 | 1037 |
| 217 | 1038 // Values that should be reset just once for the full real dive. |
| 1039 // This is used to record the lowest stop for the whole dive, | |
| 1040 // Including ACCROSS all simulated ascent. | |
| 567 | 1041 low_depth = 0; |
| 1042 locked_GF_step = 0.0; | |
| 217 | 1043 |
| 1044 // Reset gas switch history. | |
| 241 | 1045 backup_gas_used = sim_gas_last_used = 0; |
| 1046 backup_gas_depth = sim_gas_last_depth = 0; | |
| 217 | 1047 backup_gas_delay = sim_gas_delay = 0; |
| 203 | 1048 sim_dive_mins = 0; |
| 1049 break; | |
| 186 | 1050 |
| 167 | 1051 case 0: //---- bottom time ----------------------------------------------- |
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1052 default: |
| 509 | 1053 gas_switch_find_current(); // Lookup for current gas & time. |
| 1054 gas_switch_set(); // setup calc_ratio's | |
| 1055 | |
| 167 | 1056 calc_nullzeit(); |
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1057 if( char_O_nullzeit > 0 ) // Some NDL time left ? |
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1058 { |
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1059 char_O_deco_status = 0; // YES: recalc ndl next time. |
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1060 clear_deco_table(); // Also clear stops ! |
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1061 copy_deco_table(); |
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1062 char_O_deco_last_stop = 0; // And last stop (OSTC menu anim) |
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1063 } |
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1064 else |
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1065 char_O_deco_status = 2; // NO: calc ascent next time. |
| 186 | 1066 break; |
| 1067 | |
| 1068 case 2: //---- Simulate ascent to first stop ----------------------------- | |
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1069 case 6: // @+5min variation |
| 203 | 1070 // Check proposed gas at begin of ascent simulation |
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1071 sim_dive_mins = int_I_divemins; // Init current time. |
| 241 | 1072 |
| 532 | 1073 gas_switch_find_current(); // Lookup for current gas & time. |
| 1074 gas_switch_set(); // setup calc_ratio's | |
| 1075 | |
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1076 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1077 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
| 203 | 1078 backup_gas_delay = sim_gas_delay; |
| 186 | 1079 |
| 1080 sim_ascent_to_first_stop(); | |
| 201 | 1081 |
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1082 // Calc stops next time (deco or gas switch). |
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1083 char_O_deco_status = 1 | ( char_O_deco_status & 4 ); |
| 167 | 1084 break; |
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1085 |
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1086 case 1: //---- Simulate stops -------------------------------------------- |
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1087 case 5: // @+5 variation. |
| 167 | 1088 calc_hauptroutine_calc_deco(); |
| 186 | 1089 |
| 1090 // If simulation is finished, restore the GF low reference, so that | |
| 1091 // next ascent simulation is done from the current depth: | |
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1092 if( (char_O_deco_status & 3) == 0 ) |
| 186 | 1093 { |
| 241 | 1094 sim_gas_last_used = backup_gas_used; |
| 1095 sim_gas_last_depth = backup_gas_depth; | |
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1096 sim_gas_delay = backup_gas_delay; |
| 186 | 1097 } |
| 167 | 1098 break; |
| 116 | 1099 } |
| 167 | 1100 |
| 116 | 1101 } |
| 1102 | |
| 167 | 1103 ////////////////////////////////////////////////////////////////////////////// |
| 1104 // calc_hauptroutine_data_input | |
| 1105 // | |
| 1106 // Reset all C-code dive parameters from their ASM-code values. | |
| 1107 // Detect gas change condition. | |
| 1108 // | |
| 116 | 1109 void calc_hauptroutine_data_input(void) |
| 1110 { | |
| 203 | 1111 overlay short int_temp; |
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1112 overlay unsigned char g; |
| 126 | 1113 |
| 197 | 1114 pres_respiration = int_I_pres_respiration * 0.001; |
| 1115 pres_surface = int_I_pres_surface * 0.001; | |
| 1116 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1117 He_ratio = char_I_He_ratio * 0.01; | |
| 1118 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1119 |
| 126 | 1120 // ____________________________________________________ |
| 1121 // | |
| 1122 // _____________ G A S _ C H A N G E S ________________ | |
| 1123 // ____________________________________________________ | |
| 1124 | |
| 212 | 1125 // Keep a margin of 150mbar = 1.50m |
| 1126 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1127 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1128 |
| 203 | 1129 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1130 for(g=0; g < NUM_GAS; ++g) |
| 126 | 1131 { |
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1132 deco_gas_change[g] = 0; |
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1133 if(char_I_deco_gas_change[g]) |
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1134 if( int_temp > 100 *(short)char_I_deco_gas_change[g] ) |
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1135 deco_gas_change[g] = char_I_deco_gas_change[g]; |
| 126 | 1136 } |
| 116 | 1137 |
| 197 | 1138 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1139 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1140 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1141 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1142 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1143 GF_delta = GF_high - GF_low; |
| 116 | 1144 } |
| 1145 | |
| 167 | 1146 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1147 // |
| 1148 // | |
| 116 | 1149 void calc_hauptroutine_update_tissues(void) |
| 1150 { | |
| 197 | 1151 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1152 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1153 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1154 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1155 |
| 276 | 1156 pres_diluent = pres_respiration; |
| 307 | 1157 if( char_I_const_ppO2 != 0 ) // new in v.101 |
| 186 | 1158 { |
| 322 | 1159 overlay float flush_ppO2 = pres_respiration * (1.0 - N2_ratio - He_ratio); |
| 1160 | |
| 276 | 1161 pres_diluent -= const_ppO2; // new in v.101 |
| 1162 pres_diluent /= N2_ratio + He_ratio; // new in v.101 | |
| 321 | 1163 if( pres_diluent < 0.0 ) |
| 1164 pres_diluent = 0.0; | |
| 276 | 1165 if( pres_diluent > pres_respiration ) // new in v.101 |
| 1166 pres_diluent = pres_respiration; // new in v.101 | |
| 307 | 1167 |
| 321 | 1168 char_O_diluent = (unsigned char)(pres_diluent/pres_respiration*100.0 + 0.5); |
| 322 | 1169 |
| 326 | 1170 if( flush_ppO2 > 2.545) flush_ppO2 = 2.55; |
| 322 | 1171 if( flush_ppO2 < 0.0 ) flush_ppO2 = 0.0; |
| 1172 char_O_flush_ppO2 = (unsigned char)(flush_ppO2*100.0 + 0.5); | |
| 186 | 1173 } |
| 307 | 1174 |
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1175 if( pres_diluent > ppWater ) // new in v.101 |
| 116 | 1176 { |
| 307 | 1177 overlay float EAD, END; |
| 1178 | |
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1179 ppN2 = N2_ratio * (pres_diluent - ppWater); // changed in v.101 |
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1180 ppHe = He_ratio * (pres_diluent - ppWater); // changed in v.101 |
| 307 | 1181 |
| 1182 // EAD : Equivalent Air Dive. Equivalent depth for the same N2 level | |
| 1183 // with plain air. | |
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1184 // ppN2 = 79% * (P_EAD - ppWater) |
| 307 | 1185 // EAD = (P_EAD - Psurface) * 10 |
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1186 // ie: EAD = (ppN2 / 0.7902 + ppWater -Psurface) * 10 |
| 317 | 1187 EAD = (ppN2 / 0.7902 + ppWater - pres_surface) * BAR_TO_METER; |
| 307 | 1188 if( EAD < 0.0 || EAD > 245.5 ) EAD = 0.0; |
| 317 | 1189 char_O_EAD = (unsigned char)(EAD + 0.5); |
| 307 | 1190 |
| 1191 // END : Equivalent Narcotic Dive. | |
| 1192 // Here we count O2 as narcotic too. Hence everything but helium (has a narcosis factor of | |
| 1193 // 0.23 btw). Hence the formula becomes: | |
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1194 // END * BarPerMeter * (1.0 - 0.0) - ppWater + Psurface == Pambient - ppHe - ppWater |
| 317 | 1195 // ie: END = (Pambient - ppHe - Psurface) * BAR_TO_METER |
| 307 | 1196 // |
| 1197 // Source cited: | |
| 1198 // The Physiology and Medicine of Diving by Peter Bennett and David Elliott, | |
| 1199 // 4th edition, 1993, W.B.Saunders Company Ltd, London. | |
| 317 | 1200 END = (pres_respiration - ppHe - pres_surface) * BAR_TO_METER; |
| 307 | 1201 if( END < 0.0 || END > 245.5 ) END = 0.0; |
| 317 | 1202 char_O_END = (unsigned char)(END + 0.5); |
| 116 | 1203 } |
| 167 | 1204 else // new in v.101 |
| 116 | 1205 { |
| 236 | 1206 ppN2 = 0.0; // new in v.101 |
| 200 | 1207 ppHe = 0.0; // new in v.101 |
| 307 | 1208 char_O_EAD = char_O_END = 0; |
| 116 | 1209 } |
| 1210 | |
| 1211 if(!char_I_step_is_1min) | |
| 192 | 1212 calc_tissue(0); |
| 116 | 1213 else |
| 192 | 1214 calc_tissue(1); |
| 186 | 1215 |
| 192 | 1216 // Calc limit for surface, ie. GF_high. |
| 258 | 1217 calc_limit(); |
| 186 | 1218 |
| 203 | 1219 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 339 | 1220 int_O_gtissue_press = (short)((pres_tissue_N2[char_O_gtissue_no] + pres_tissue_He[char_O_gtissue_no]) * 1000); |
| 171 | 1221 } |
| 1222 | |
| 116 | 1223 |
| 167 | 1224 ////////////////////////////////////////////////////////////////////////////// |
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1225 // Compute stops. |
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1226 // |
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1227 // Note: because this can be very long, break on 16 iterations, and set state |
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1228 // to 0 when finished, or to 1 when needing to continue. |
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1229 // Note: because each iteration might be very long too (~ 66 ms in 1.84beta), |
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1230 // break the loop when total time > 512msec. |
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1231 // |
| 116 | 1232 void calc_hauptroutine_calc_deco(void) |
| 1233 { | |
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1234 overlay unsigned char loop; |
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1235 |
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1236 for(loop = 0; loop < 16; ++loop) |
| 116 | 1237 { |
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1238 // Limit loops to 512ms, using the RTC timer 3: |
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1239 if( tmr3() & (512*32) ) |
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1240 break; |
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1241 |
| 241 | 1242 // Do not ascent while doing a gas switch ? |
| 203 | 1243 if( sim_gas_delay <= sim_dive_mins ) |
| 1244 { | |
| 241 | 1245 if( calc_nextdecodepth() ) |
| 1246 { | |
| 1247 if( temp_depth_limit == 0 ) | |
| 1248 goto Surface; | |
| 116 | 1249 |
| 241 | 1250 //---- We hit a stop at temp_depth_limit --------------------- |
| 317 | 1251 temp_deco = temp_depth_limit * METER_TO_BAR // Convert to relative bar, |
| 241 | 1252 + pres_surface; // To absolute. |
| 471 | 1253 if( !update_deco_table() ) // Adds a one minute stops. |
| 1254 goto Surface; // Deco table full: abort... | |
| 241 | 1255 } |
| 1256 else | |
| 1257 { | |
| 1258 //---- No stop ----------------------------------------------- | |
| 317 | 1259 temp_deco -= (10*METER_TO_BAR); // Ascend 10m, no wait. |
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1260 |
| 241 | 1261 //---- Finish computations once surface is reached ----------- |
| 1262 if( temp_deco <= pres_surface ) | |
| 1263 { | |
| 1264 Surface: | |
| 471 | 1265 if( char_O_deco_status == 1 ) // Don't in @+5min variant. |
|
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1266 copy_deco_table(); |
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1267 |
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1268 calc_ascenttime(); |
| 471 | 1269 char_O_deco_status = 0; // calc nullzeit next time. |
| 1270 char_O_deco_last_stop = 0; // Surface reached (to animate menu) | |
| 241 | 1271 return; |
| 1272 } | |
| 1273 } | |
| 212 | 1274 } |
| 1275 else | |
|
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1276 { |
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1277 // Note: if loop==0, temp_depth_limit might not be already set here. |
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1278 temp_depth_limit = (int)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
| 471 | 1279 if( !update_deco_table() ) // Just pass one minute. |
| 1280 goto Surface; // Deco table full: abort... | |
|
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1281 } |
| 197 | 1282 |
| 241 | 1283 //---- Then update tissue -------------------------------------------- |
| 203 | 1284 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1285 gas_switch_set(); // Apply any simulated gas change, once validated. |
| 212 | 1286 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1287 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1288 } |
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1289 |
|
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1290 // Surface not reached, need more stops... for menu animation. |
| 278 | 1291 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
| 116 | 1292 } |
| 1293 | |
| 167 | 1294 ////////////////////////////////////////////////////////////////////////////// |
|
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1295 // Simulation ascention to first deco stop. |
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1296 // |
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1297 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1298 // there is no need to break on more that 16 iterations |
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1299 // (or we are already in deep shit). |
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1300 // |
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1301 // Input: pres_respiration |
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1302 // Output: temp_deco |
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1303 // |
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1304 // if char_O_deco_status indicate @+5 variant, add extra time at current depth, |
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1305 // before ascent. |
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1306 void sim_ascent_to_first_stop(void) |
| 116 | 1307 { |
| 171 | 1308 update_startvalues(); |
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1309 clear_deco_table(); |
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1310 |
| 200 | 1311 temp_deco = pres_respiration; // Starts from current real depth. |
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1312 |
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1313 // Are we doing the special @+5min variation ? |
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1314 if(char_O_deco_status & 4) |
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1315 sim_extra_time(); |
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1316 |
| 212 | 1317 // Do we have a gas switch going on ? |
| 1318 if( sim_gas_delay > sim_dive_mins ) | |
| 1319 return; | |
| 1320 | |
| 241 | 1321 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1322 for(;;) |
| 116 | 1323 { |
| 461 | 1324 overlay float old_deco = temp_deco; // Pamb backup (bars) |
| 460 | 1325 |
| 241 | 1326 // Try ascending 1 full minute. |
| 461 | 1327 temp_deco -= 10*METER_TO_BAR; // 1 min, at 10m/min. ~ 1bar. |
| 1328 if( temp_deco < pres_surface ) // But don't go over surface. | |
| 1329 temp_deco = pres_surface; | |
| 203 | 1330 |
| 461 | 1331 // Recompute sim_lead_tissue_limit at GF_low (deepest stop), because |
| 1332 // one minute passed. | |
| 212 | 1333 sim_limit(GF_low); |
| 1334 | |
| 1335 // Did we reach deepest remaining stop ? | |
| 241 | 1336 if( temp_deco < sim_lead_tissue_limit ) |
| 212 | 1337 { |
| 461 | 1338 temp_deco = old_deco; // Restore last correct depth, |
| 1339 break; // Do no spend a minute more. | |
| 212 | 1340 } |
| 1341 | |
| 203 | 1342 // Did we reach surface ? |
| 460 | 1343 // NOTE: we should round BEFORE checking surface is reached. |
| 461 | 1344 temp_depth_limit = (unsigned char)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
| 1345 if( temp_depth_limit == 0 ) | |
| 203 | 1346 { |
| 1347 temp_deco = pres_surface; // Yes: finished ! | |
| 1348 break; | |
| 1349 } | |
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1350 |
| 241 | 1351 // Check for gas change below new depth ? |
| 1352 if( gas_switch_deepest() ) | |
| 1353 { | |
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1354 assert( temp_depth_limit > 0); |
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1355 |
| 317 | 1356 temp_deco = temp_depth_limit * METER_TO_BAR + pres_surface; |
| 212 | 1357 break; |
| 241 | 1358 } |
| 171 | 1359 |
| 203 | 1360 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1361 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
| 203 | 1362 sim_tissue(1); // and update tissues for 1 min. |
| 1363 } | |
| 167 | 1364 } |
| 116 | 1365 |
| 167 | 1366 ////////////////////////////////////////////////////////////////////////////// |
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1367 // Simulation extra time at the current depth. |
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1368 // |
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1369 // This routine is used for @+5min feature. |
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1370 void sim_extra_time(void) |
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1371 { |
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1372 overlay unsigned char extra = read_custom_function(58); |
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1373 do { |
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1374 sim_dive_mins++; // Advance simulated time by 1 minute. |
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1375 sim_tissue(1); // and update tissues for 1 min. |
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1376 } while( --extra != 0 ); |
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1377 } |
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1378 |
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1379 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 1380 // calc_tissue |
| 1381 // | |
| 116 | 1382 // optimized in v.101 |
| 167 | 1383 // |
| 184 | 1384 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1385 { |
| 251 | 1386 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1387 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1388 |
| 338 | 1389 for (ci=0;ci<NUM_COMP;ci++) |
| 126 | 1390 { |
| 258 | 1391 read_buhlmann_times(period); // 2 sec or 1 min period. |
| 116 | 1392 |
| 126 | 1393 // N2 |
| 339 | 1394 temp_tissue = (ppN2 - pres_tissue_N2[ci]) * var_N2_e; |
| 126 | 1395 temp_tissue_safety(); |
| 339 | 1396 pres_tissue_N2[ci] += temp_tissue; |
| 165 | 1397 |
| 126 | 1398 // He |
| 339 | 1399 temp_tissue = (ppHe - pres_tissue_He[ci]) * var_He_e; |
| 126 | 1400 temp_tissue_safety(); |
| 339 | 1401 pres_tissue_He[ci] += temp_tissue; |
| 192 | 1402 } |
| 167 | 1403 } |
| 116 | 1404 |
| 167 | 1405 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1406 // calc_limit |
| 167 | 1407 // |
| 192 | 1408 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1409 // |
| 258 | 1410 static void calc_limit(void) |
| 167 | 1411 { |
| 192 | 1412 char_O_gtissue_no = 255; |
| 1413 calc_lead_tissue_limit = 0.0; | |
| 1414 | |
| 338 | 1415 for(ci=0; ci<NUM_COMP;ci++) |
| 192 | 1416 { |
| 339 | 1417 overlay float N2 = pres_tissue_N2[ci]; |
| 1418 overlay float He = pres_tissue_He[ci]; | |
|
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1419 overlay float p = N2 + He; |
| 192 | 1420 |
| 258 | 1421 read_buhlmann_coefficients(); |
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1422 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1423 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
| 116 | 1424 |
| 192 | 1425 // Apply the Eric Baker's varying gradient factor correction. |
| 1426 // Note: the correction factor depends both on GF and b, | |
| 1427 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1428 // so that can change who is the leading gas... | |
| 1429 // Note: Also depends of the GF. So the calcul is different for | |
| 1430 // GF_low, current GF, or GF_high... | |
| 1431 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1432 // hence what would happend at surface, | |
| 1433 // hence at GF_high. | |
| 509 | 1434 if( char_I_deco_model != 0 ) |
| 258 | 1435 p = ( p - var_N2_a * GF_high) * var_N2_b |
| 1436 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
| 192 | 1437 else |
| 1438 p = (p - var_N2_a) * var_N2_b; | |
| 258 | 1439 if( p < 0.0 ) p = 0.0; |
| 192 | 1440 |
| 1441 if( p > calc_lead_tissue_limit ) | |
| 1442 { | |
| 1443 char_O_gtissue_no = ci; | |
| 1444 calc_lead_tissue_limit = p; | |
| 1445 } | |
| 1446 } | |
| 197 | 1447 |
| 338 | 1448 assert( char_O_gtissue_no < NUM_COMP ); |
| 197 | 1449 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); |
| 167 | 1450 } |
| 1451 | |
| 1452 ////////////////////////////////////////////////////////////////////////////// | |
| 1453 // calc_nullzeit | |
| 1454 // | |
| 1455 // calculates the remaining bottom time | |
| 1456 // | |
|
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1457 // NOTE: Erik Baker's closed formula works for Nitroxes. Trimix adds a second |
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1458 // exponential term to the M-value equation, making it impossible to |
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1459 // invert... So we have to make a fast-simu until we find a better way. |
| 509 | 1460 // |
| 1461 // Input: pres_respiration | |
| 1462 // Output: char_O_nullzeit | |
| 167 | 1463 // |
| 1464 static void calc_nullzeit(void) | |
| 1465 { | |
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1466 //---- Compute ppN2 and ppHe --------------------------------------------- |
| 509 | 1467 temp_deco = pres_respiration; |
| 1468 sim_alveolar_presures(); | |
| 167 | 1469 |
| 509 | 1470 char_O_nullzeit = 240; |
| 1471 for(ci=0; ci<NUM_COMP; ci++) | |
| 1472 { | |
|
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1473 //---- Read A/B values and loading factor for N2 and He -------------- |
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1474 overlay float tN2 = pres_tissue_N2[ci]; |
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1475 overlay float tHe = pres_tissue_He[ci]; |
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1476 overlay float t = tN2 + tHe; |
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1477 overlay unsigned char ndl; |
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1478 overlay unsigned char period = 10; |
| 192 | 1479 |
| 509 | 1480 read_buhlmann_coefficients(); |
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1481 read_buhlmann_times(2); // Starts with a 10min period. |
| 509 | 1482 |
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1483 //---- Simulate for that tissue -------------------------------------- |
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1484 // NOTE: No need to simulate for longuer than the already found NDL. |
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1485 for(ndl=0; ndl<char_O_nullzeit;) |
| 509 | 1486 { |
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1487 //---- Compute updated mix M-value at surface |
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1488 overlay float a = (var_N2_a * tN2 + var_He_a * tHe) / t; |
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1489 overlay float b = (var_N2_b * tN2 + var_He_b * tHe) / t; |
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1490 overlay float M0 = (a + pres_surface/b); |
| 116 | 1491 |
|
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1492 //---- Add 10min/1min to N2/He tissues |
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1493 overlay float dTN2 = (ppN2 - tN2) * var_N2_e; |
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1494 overlay float dTHe = (ppHe - tHe) * var_He_e; |
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1495 |
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1496 //---- Apply security margin when using the non-GF model |
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1497 if( char_I_deco_model == 0 ) |
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1498 { |
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1499 dTN2 *= float_saturation_multiplier; |
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1500 dTHe *= float_saturation_multiplier; |
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1501 } |
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1502 else // Or GF-based model |
| 509 | 1503 M0 = GF_high * (M0 - pres_surface) + pres_surface; |
| 167 | 1504 |
|
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1505 //---- Simulate off-gasing while going to surface |
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1506 // TODO ! |
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1507 // dTN2 -= exp( ... ascent time ... ppN2...) |
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1508 // dTHe -= exp( ... ascent time ... ppHe...) |
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1509 |
|
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1510 //---- Ok now, and still ok to surface after 1 or 10 minutes ? |
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1511 if( (t <= M0) && (t + dTN2 + dTHe <= M0) ) |
| 509 | 1512 { |
|
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1513 tN2 += dTN2; // YES: apply gas loadings, |
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1514 tHe += dTHe; |
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1515 t = tN2 + tHe; |
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1516 ndl += period; // increment NDL, |
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1517 continue; // and loop. |
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1518 } |
| 116 | 1519 |
|
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1520 //---- Should we retry with smaller steps ? |
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1521 if( period == 10 ) |
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1522 { |
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1523 read_buhlmann_times(1); // 1min coefs. |
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1524 period = 1; |
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1525 continue; |
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1526 } |
| 167 | 1527 |
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1528 //---- ELSE make a linear approx for the last minute |
| 524 | 1529 // Usefull to have a meaningfull rounding of NDL. |
| 1530 // But ONLY it positive (negativ casted to unsigned is bad). | |
| 1531 if( M0 > t ) | |
| 1532 ndl += (unsigned char)(0.5f + (M0-t)/(dTN2+dTHe)); | |
|
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1533 break; |
| 509 | 1534 } |
|
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1535 |
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1536 // Keep the shortest NDL found |
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1537 if( ndl < char_O_nullzeit ) |
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1538 char_O_nullzeit = ndl; |
| 339 | 1539 } |
| 167 | 1540 } |
| 116 | 1541 |
| 167 | 1542 ////////////////////////////////////////////////////////////////////////////// |
| 1543 // calc_ascenttime | |
| 1544 // | |
|
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1545 // Summup ascent from bottom to surface, at 1 bar/min, 1min for last 3 meters, |
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1546 // and all stops. |
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1547 // |
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1548 // Result in int_O_ascenttime, or int_O_extra_ascenttime if in @+5min variant. |
|
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1549 static void calc_ascenttime(void) |
| 116 | 1550 { |
| 323 | 1551 overlay unsigned char x; |
| 1552 overlay unsigned short sum; | |
| 168 | 1553 |
| 323 | 1554 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
| 1555 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
| 1556 if (ascent < 0.0) | |
| 1557 ascent = 0.0; | |
| 1558 sum = (unsigned short)(ascent + 0.99); | |
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1559 |
| 338 | 1560 for(x=0; x<NUM_STOPS && internal_deco_depth[x]; x++) |
| 323 | 1561 sum += (unsigned short)internal_deco_time[x]; |
| 1562 | |
| 1563 if( char_O_deco_status == 1 ) | |
| 1564 int_O_ascenttime = sum; | |
| 126 | 1565 else |
| 323 | 1566 int_O_extra_ascenttime = sum; |
| 167 | 1567 } |
| 116 | 1568 |
| 167 | 1569 ////////////////////////////////////////////////////////////////////////////// |
| 1570 // update_startvalues | |
| 1571 // | |
| 116 | 1572 // updated in v.102 |
| 167 | 1573 // |
| 116 | 1574 void update_startvalues(void) |
| 1575 { | |
| 167 | 1576 overlay unsigned char x; |
| 116 | 1577 |
| 201 | 1578 // Start ascent simulation with current tissue partial pressures. |
| 339 | 1579 for(x=0; x<NUM_COMP; x++) |
| 116 | 1580 { |
| 339 | 1581 sim_pres_tissue_N2[x] = pres_tissue_N2[x]; |
| 1582 sim_pres_tissue_He[x] = pres_tissue_He[x]; | |
| 116 | 1583 } |
| 197 | 1584 |
| 201 | 1585 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1586 sim_lead_tissue_limit = 0.0; |
| 1587 sim_lead_tissue_no = 255; | |
| 167 | 1588 } |
| 116 | 1589 |
| 167 | 1590 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1591 // sim_tissue |
| 167 | 1592 // |
| 116 | 1593 // optimized in v.101 |
| 167 | 1594 // |
| 1595 // Function very simular to calc_tissue, but: | |
| 1596 // + Use a 1min or 10min period. | |
| 1597 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1598 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1599 { |
| 251 | 1600 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1601 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1602 |
| 338 | 1603 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 1604 { |
| 258 | 1605 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
| 165 | 1606 |
| 126 | 1607 // N2 |
| 339 | 1608 temp_tissue = (ppN2 - sim_pres_tissue_N2[ci]) * var_N2_e; |
| 126 | 1609 temp_tissue_safety(); |
| 339 | 1610 sim_pres_tissue_N2[ci] += temp_tissue; |
| 126 | 1611 |
| 1612 // He | |
| 339 | 1613 temp_tissue = (ppHe - sim_pres_tissue_He[ci]) * var_He_e; |
| 126 | 1614 temp_tissue_safety(); |
| 339 | 1615 sim_pres_tissue_He[ci] += temp_tissue; |
| 192 | 1616 } |
| 167 | 1617 } |
| 116 | 1618 |
| 167 | 1619 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1620 // sim_limit() |
| 1621 // | |
| 1622 // New in v.111 | |
| 1623 // | |
| 1624 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1625 // different depth, because it depends on current gradient factor. | |
| 167 | 1626 // |
| 192 | 1627 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1628 { |
| 212 | 1629 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1630 | |
| 192 | 1631 sim_lead_tissue_limit = 0.0; |
| 212 | 1632 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1633 |
| 338 | 1634 for(ci=0; ci<NUM_COMP; ci++) |
| 192 | 1635 { |
| 339 | 1636 overlay float N2 = sim_pres_tissue_N2[ci]; |
| 1637 overlay float He = sim_pres_tissue_He[ci]; | |
| 241 | 1638 overlay float p = N2 + He; |
| 192 | 1639 |
| 258 | 1640 read_buhlmann_coefficients(); |
| 241 | 1641 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
| 1642 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 192 | 1643 |
| 1644 // Apply the Eric Baker's varying gradient factor correction. | |
| 1645 // Note: the correction factor depends both on GF and b, | |
| 1646 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1647 // so that can change who is the leading gas... | |
| 1648 // Note: Also depends of the GF_current... | |
| 509 | 1649 if( char_I_deco_model != 0 ) |
| 302 | 1650 p = ( p - var_N2_a * GF_current) |
| 1651 / (GF_current / var_N2_b + 1.0 - GF_current); | |
| 192 | 1652 else |
| 1653 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1654 if( p < 0.0 ) p = 0.0; |
| 192 | 1655 |
| 1656 if( p > sim_lead_tissue_limit ) | |
| 1657 { | |
| 1658 sim_lead_tissue_no = ci; | |
| 1659 sim_lead_tissue_limit = p; | |
| 1660 } | |
| 1661 } // for ci | |
| 197 | 1662 |
| 338 | 1663 assert( sim_lead_tissue_no < NUM_COMP ); |
| 237 | 1664 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1665 } |
| 116 | 1666 |
| 167 | 1667 ////////////////////////////////////////////////////////////////////////////// |
|
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1668 // clear_deco_table |
| 167 | 1669 // |
| 1670 // unchanged in v.101 | |
| 1671 // | |
|
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1672 static void clear_deco_table(void) |
| 116 | 1673 { |
|
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1674 overlay unsigned char x; |
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1675 |
| 338 | 1676 for(x=0; x<NUM_STOPS; ++x) |
|
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1677 { |
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1678 internal_deco_time [x] = 0; |
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1679 internal_deco_depth[x] = 0; |
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1680 } |
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1681 } |
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1682 |
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1683 ////////////////////////////////////////////////////////////////////////////// |
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1684 // update_deco_table |
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1685 // |
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1686 // Add 1 min to current stop. |
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1687 // |
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1688 // Inputs: |
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1689 // temp_depth_limit = stop's depth, in meters. |
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1690 // In/Out: |
|
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1691 // internal_deco_depth[] : depth (in metres) of each stops. |
|
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1692 // internal_deco_time [] : time (in minutes) of each stops. |
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1693 // |
| 471 | 1694 static unsigned char update_deco_table() |
|
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1695 { |
| 192 | 1696 overlay unsigned char x; |
|
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1697 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1698 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1699 |
| 338 | 1700 for(x=0; x<NUM_STOPS; ++x) |
| 192 | 1701 { |
| 212 | 1702 // Make sure deco-stops are recorded in order: |
|
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1703 assert( !internal_deco_depth[x] || temp_depth_limit <= (internal_deco_depth[x]& 0x7F) ); |
| 212 | 1704 |
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1705 if( (internal_deco_depth[x] & 0x7F) == temp_depth_limit ) |
| 192 | 1706 { |
| 1707 // Do not overflow (max 255') | |
| 1708 if( internal_deco_time[x] < 255 ) | |
| 1709 { | |
| 1710 internal_deco_time[x]++; | |
| 471 | 1711 return 1; |
| 192 | 1712 } |
| 1713 // But store extra in the next stop... | |
|
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1714 } |
| 192 | 1715 |
|
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1716 if( internal_deco_depth[x] == 0 ) |
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1717 { |
| 192 | 1718 internal_deco_depth[x] = temp_depth_limit; |
|
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1719 if( sim_gas_delay >= sim_dive_mins ) |
|
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1720 internal_deco_depth[x] |= 0x80; |
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1721 |
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1722 internal_deco_time[x] = 1; |
| 471 | 1723 return 1; |
|
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1724 } |
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1725 } |
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1726 |
| 192 | 1727 // Can't store stops at more than 96m. |
| 1728 // Or stops at less that 3m too. | |
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1729 // Just do nothing with that... |
| 471 | 1730 return 0; |
| 167 | 1731 } |
| 116 | 1732 |
| 167 | 1733 ////////////////////////////////////////////////////////////////////////////// |
| 1734 // calc_gradient_factor | |
| 1735 // | |
| 165 | 1736 // optimized in v.101 (var_N2_a) |
| 116 | 1737 // new code in v.102 |
| 167 | 1738 // |
| 1739 static void calc_gradient_factor(void) | |
| 116 | 1740 { |
| 197 | 1741 overlay float gf; |
| 339 | 1742 overlay float N2 = pres_tissue_N2[char_O_gtissue_no]; |
| 1743 overlay float He = pres_tissue_He[char_O_gtissue_no]; | |
| 237 | 1744 |
| 338 | 1745 assert( char_O_gtissue_no < NUM_COMP ); |
| 237 | 1746 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1747 |
|
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1748 // tissue > respiration (currently off-gasing) |
| 302 | 1749 // GF = 0% when respiration == tissue, ie. bubbles are at equilibrium. |
| 1750 // GF = 100% when respiration == limit. | |
|
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1751 temp_tissue = N2 + He; |
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1752 if( temp_tissue <= pres_respiration ) |
| 197 | 1753 gf = 0.0; |
| 1754 else | |
| 1755 { | |
|
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1756 overlay float limit = calc_lead_tissue_limit; |
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1757 // NOTE: in GF model, calc_lead_tissue_limit include already the |
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1758 // correction due to gradient factor. To compute the actual |
|
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1759 // current GF, we need to (re-)compute the raw ambiant-pressure |
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1760 // limit from the Bühlmann model. |
| 509 | 1761 if( char_I_deco_model != 0 ) |
|
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1762 { |
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1763 ci = char_O_gtissue_no; |
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1764 read_buhlmann_coefficients(); |
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1765 var_N2_a = (var_N2_a * N2 + var_He_a * He) / temp_tissue; |
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1766 var_N2_b = (var_N2_b * N2 + var_He_b * He) / temp_tissue; |
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1767 limit = (temp_tissue - var_N2_a) * var_N2_b; |
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1768 } |
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1769 |
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1770 gf = (temp_tissue - pres_respiration) |
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1771 / (temp_tissue - limit) |
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1772 * 100.0; |
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1773 if( gf > 254.5 ) gf = 255.0; |
| 197 | 1774 if( gf < 0.0 ) gf = 0.0; |
| 1775 } | |
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1776 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
| 116 | 1777 |
| 509 | 1778 if( char_I_deco_model != 0 ) // calculate relative gradient factor |
| 116 | 1779 { |
| 197 | 1780 overlay float rgf; |
| 1781 | |
| 562 | 1782 if( low_depth < 3 ) |
| 197 | 1783 rgf = GF_high; |
| 1784 else | |
| 1785 { | |
| 317 | 1786 overlay float temp1 = low_depth * METER_TO_BAR; |
| 197 | 1787 overlay float temp2 = pres_respiration - pres_surface; |
| 186 | 1788 |
| 197 | 1789 if (temp2 <= 0) |
| 1790 rgf = GF_high; | |
| 1791 else if (temp2 >= temp1) | |
| 1792 rgf = GF_low; | |
| 1793 else | |
| 1794 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1795 } | |
| 186 | 1796 |
| 197 | 1797 rgf = gf / rgf; // gf is already in percent |
| 1798 if( rgf < 0.0 ) rgf = 0.0; | |
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1799 if( rgf > 254.5 ) rgf = 255.0; |
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1800 char_O_relative_gradient_GF = (unsigned char)(rgf+0.5f); |
| 116 | 1801 } // calc relative gradient factor |
| 1802 else | |
| 1803 { | |
| 186 | 1804 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1805 } |
| 167 | 1806 } |
| 116 | 1807 |
| 167 | 1808 ////////////////////////////////////////////////////////////////////////////// |
| 1809 // deco_calc_desaturation_time | |
| 1810 // | |
| 116 | 1811 // FIXED N2_ratio |
| 1812 // unchanged in v.101 | |
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1813 // Inputs: int_I_pres_surface, ppWater, char_I_desaturation_multiplier |
| 233 | 1814 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] |
| 167 | 1815 // |
| 116 | 1816 void deco_calc_desaturation_time(void) |
| 1817 { | |
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1818 RESET_C_STACK |
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1819 |
| 233 | 1820 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 1821 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 1822 | |
| 237 | 1823 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 1824 pres_surface = int_I_pres_surface * 0.001; |
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1825 ppN2 = N2_ratio * (pres_surface - ppWater); |
| 126 | 1826 int_O_desaturation_time = 0; |
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1827 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
| 233 | 1828 |
| 339 | 1829 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 1830 { |
| 251 | 1831 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 1832 overlay float temp1; | |
| 1833 overlay float temp2; | |
| 1834 overlay float temp3; | |
| 1835 overlay float temp4; | |
| 338 | 1836 |
| 509 | 1837 read_buhlmann_ht(); |
| 338 | 1838 |
| 126 | 1839 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1840 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1841 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
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1842 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
| 126 | 1843 // N2 |
| 339 | 1844 temp1 = 1.05 * ppN2 - pres_tissue_N2[ci]; |
| 1845 temp2 = ppN2 - pres_tissue_N2[ci]; | |
| 126 | 1846 if (temp2 >= 0.0) |
| 233 | 1847 temp1 = 0.0; |
| 126 | 1848 else |
| 1849 temp1 = temp1 / temp2; | |
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1850 |
| 251 | 1851 if( 0.0 < temp1 && temp1 < 1.0 ) |
| 126 | 1852 { |
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1853 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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1854 // minus because log is negative. |
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1855 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
| 509 | 1856 temp2 = var_N2_ht * temp1 / float_desaturation_multiplier; // time necessary (in minutes ) for complete desaturation (see comment about 5 percent) , new in v.101: float_desaturation_multiplier |
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1857 |
| 126 | 1858 } |
| 1859 else | |
| 1860 { | |
| 233 | 1861 temp1 = 0.0; |
| 1862 temp2 = 0.0; | |
| 126 | 1863 } |
| 116 | 1864 |
| 126 | 1865 // He |
| 339 | 1866 temp3 = 0.1 - pres_tissue_He[ci]; |
| 126 | 1867 if (temp3 >= 0.0) |
| 233 | 1868 temp3 = 0.0; |
| 126 | 1869 else |
| 339 | 1870 temp3 = - temp3 / pres_tissue_He[ci]; |
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1871 |
| 251 | 1872 if( 0.0 < temp3 && temp3 < 1.0 ) |
| 126 | 1873 { |
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1874 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
| 126 | 1875 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
| 1876 // minus because log is negative | |
| 509 | 1877 temp4 = var_He_ht * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1878 } |
| 1879 else | |
| 1880 { | |
| 233 | 1881 temp3 = 0.0; |
| 1882 temp4 = 0.0; | |
| 126 | 1883 } |
| 116 | 1884 |
| 126 | 1885 // saturation_time (for flight) |
| 1886 if (temp4 > temp2) | |
| 203 | 1887 desat_time = (unsigned short)temp4; |
| 126 | 1888 else |
| 203 | 1889 desat_time = (unsigned short)temp2; |
| 252 | 1890 |
| 251 | 1891 if(desat_time > int_O_desaturation_time) |
| 1892 int_O_desaturation_time = desat_time; | |
| 116 | 1893 |
| 126 | 1894 // N2 saturation in multiples of halftime for display purposes |
| 339 | 1895 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
| 1896 temp2 = temp2 + 80.0; // set center | |
| 126 | 1897 if (temp2 < 0.0) |
| 1898 temp2 = 0.0; | |
| 1899 if (temp2 > 255.0) | |
| 1900 temp2 = 255.0; | |
| 339 | 1901 char_O_tissue_N2_saturation[ci] = (char)temp2; |
| 233 | 1902 |
| 126 | 1903 // He saturation in multiples of halftime for display purposes |
| 339 | 1904 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
| 1905 temp4 = temp4 + 80.0; // set center | |
| 126 | 1906 if (temp4 < 0.0) |
| 1907 temp4 = 0.0; | |
| 1908 if (temp4 > 255.0) | |
| 1909 temp4 = 255.0; | |
| 339 | 1910 char_O_tissue_He_saturation[ci] = (char)temp4; |
| 126 | 1911 } // for |
| 167 | 1912 } |
| 116 | 1913 |
| 167 | 1914 ////////////////////////////////////////////////////////////////////////////// |
| 1915 // calc_wo_deco_step_1_min | |
| 1916 // | |
| 116 | 1917 // FIXED N2 Ratio |
| 1918 // optimized in v.101 (...saturation_multiplier) | |
| 1919 // desaturation slowed down to 70,42% | |
| 167 | 1920 // |
| 1921 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1922 { |
| 251 | 1923 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 1924 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
| 1925 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
| 1926 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 1927 | |
| 126 | 1928 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 368 | 1929 pres_respiration = pres_surface = int_I_pres_surface * 0.001; |
| 1930 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
| 200 | 1931 ppHe = 0.0; |
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1932 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
| 197 | 1933 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 1934 |
| 339 | 1935 calc_tissue(1); // update the pressure in the tissues N2/He in accordance with the new ambient pressure |
| 167 | 1936 |
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1937 clear_deco_table(); |
| 200 | 1938 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 1939 char_O_nullzeit = 0; |
| 168 | 1940 int_O_ascenttime = 0; |
| 323 | 1941 int_O_extra_ascenttime = 0; |
| 126 | 1942 calc_gradient_factor(); |
| 167 | 1943 } |
| 126 | 1944 |
| 167 | 1945 ////////////////////////////////////////////////////////////////////////////// |
| 368 | 1946 // calc_dive_interval |
| 1947 // | |
| 1948 // Prepare tissue for delay before the next dive simulation. | |
| 1949 // | |
| 1950 // Inputs: char_I_dive_interval == delay before dive (in 10' steps). | |
| 1951 // Outputs: pres_tissue_N2/He[], CNS_fraction | |
| 1952 // | |
| 1953 // Should be protected by deco_push_tissues_to_vault(), | |
| 1954 // deco_pull_tissues_from_vault() | |
| 1955 // | |
| 1956 // desaturation slowed down to 70,42%. | |
| 1957 // | |
|
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1958 static void calc_dive_interval(void) |
| 368 | 1959 { |
| 1960 overlay unsigned char t; | |
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1961 overlay unsigned char backup_model; |
| 368 | 1962 |
| 1963 //---- Initialize simulation parameters ---------------------------------- | |
| 1964 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann | |
| 1965 pres_respiration = pres_surface = int_I_pres_surface * 0.001; | |
| 1966 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
| 1967 ppHe = 0.0; | |
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1968 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
| 368 | 1969 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 1970 | |
| 568 | 1971 // Make sure SURFACE_DESAT_FACTOR is applied: |
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1972 backup_model = char_I_deco_model; |
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1973 char_I_deco_model = 0; |
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1974 |
| 368 | 1975 //---- Perform simulation ------------------------------------------------ |
| 1976 for(t=0; t<char_I_dive_interval; ++t) | |
| 1977 { | |
| 1978 calc_tissue(2); // period = 10min. | |
| 1979 CNS_fraction = 0.92587471 * CNS_fraction; // Half-time = 90min: (1/2)^(1/9) | |
| 1980 } | |
| 514 | 1981 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
| 1982 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); | |
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1983 |
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1984 //---- Restore model ----------------------------------------------------- |
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1985 char_I_deco_model = backup_model; |
| 368 | 1986 } |
| 1987 | |
| 1988 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1989 ////////////////////////////////////////////////////////////////////////////// |
| 1990 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1991 ////////////////////////////////////////////////////////////////////////////// | |
| 1992 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1993 |
| 184 | 1994 #ifndef CROSS_COMPILE |
| 116 | 1995 void deco_hash(void) |
| 1996 { | |
| 167 | 1997 overlay unsigned char md_i, md_j; // Loop index. |
| 1998 overlay unsigned char md_t; | |
| 1999 overlay unsigned char md_buffer[16]; | |
| 2000 overlay unsigned char md_temp; | |
| 203 | 2001 overlay unsigned short md_pointer; |
| 167 | 2002 |
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2003 RESET_C_STACK |
| 126 | 2004 |
| 2005 // init | |
| 164 | 2006 for(md_i=0;md_i<16;md_i++) |
| 126 | 2007 { |
| 2008 md_state[md_i] = 0; | |
| 164 | 2009 char_O_hash[md_i] = 0; |
| 126 | 2010 } // for md_i 16 |
| 116 | 2011 |
| 126 | 2012 _asm |
| 167 | 2013 movlw 0x01 // md_pi address. |
| 2014 movwf TBLPTRU,0 | |
| 2015 movlw 0x7E | |
| 2016 movwf TBLPTRH,0 | |
| 2017 movlw 0x00 | |
| 2018 movwf TBLPTRL,0 | |
| 126 | 2019 _endasm; |
| 165 | 2020 md_i = 0; |
| 2021 do { | |
| 126 | 2022 _asm |
| 2023 TBLRDPOSTINC | |
| 2024 movff TABLAT,md_temp | |
| 2025 _endasm | |
| 165 | 2026 md_pi_subst[md_i++] = md_temp; |
| 2027 } while( md_i != 0 ); | |
| 2028 | |
| 126 | 2029 _asm |
| 167 | 2030 movlw 0x00 |
| 2031 movwf TBLPTRU,0 | |
| 2032 movlw 0x00 | |
| 2033 movwf TBLPTRH,0 | |
| 2034 movlw 0x00 | |
| 2035 movwf TBLPTRL,0 | |
| 126 | 2036 _endasm |
| 167 | 2037 |
| 126 | 2038 // cycle buffers |
| 2039 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 2040 { | |
| 2041 md_t = 0; | |
| 2042 for (md_i=0;md_i<16;md_i++) | |
| 2043 { | |
| 2044 if(md_pointer == 9) | |
| 164 | 2045 md_temp = char_O_hash[md_i]; |
| 126 | 2046 else |
| 2047 { | |
| 2048 _asm | |
| 167 | 2049 TBLRDPOSTINC |
| 2050 movff TABLAT,md_temp | |
| 126 | 2051 _endasm |
| 2052 } // else | |
| 167 | 2053 |
| 2054 md_buffer[md_i] = md_temp; | |
| 186 | 2055 md_state[md_i+16] = md_temp; |
| 2056 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2057 } // for md_i 16 |
| 2058 | |
| 2059 for (md_i=0;md_i<18;md_i++) | |
| 2060 { | |
| 2061 for (md_j=0;md_j<48;md_j++) | |
| 2062 { | |
| 167 | 2063 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2064 md_t = md_state[md_j]; |
| 2065 } // for md_j 48 | |
| 2066 md_t = (unsigned char)(md_t+1); | |
| 2067 } // for md_i 18 | |
| 164 | 2068 md_t = char_O_hash[15]; |
| 126 | 2069 |
| 2070 for (md_i=0;md_i<16;md_i++) | |
| 2071 { | |
| 167 | 2072 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2073 md_t = char_O_hash[md_i]; |
| 126 | 2074 } // for md_i 16 |
| 2075 } // for md_pointer | |
| 116 | 2076 } // void deco_hash(void) |
| 184 | 2077 #endif |
| 116 | 2078 |
| 167 | 2079 ////////////////////////////////////////////////////////////////////////////// |
| 2080 // deco_clear_CNS_fraction | |
| 2081 // | |
| 116 | 2082 // new in v.101 |
| 167 | 2083 // |
| 116 | 2084 void deco_clear_CNS_fraction(void) |
| 2085 { | |
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2086 RESET_C_STACK |
| 237 | 2087 |
| 126 | 2088 CNS_fraction = 0.0; |
| 2089 char_O_CNS_fraction = 0; | |
| 167 | 2090 } |
| 116 | 2091 |
| 167 | 2092 ////////////////////////////////////////////////////////////////////////////// |
| 2093 // deco_calc_CNS_fraction | |
| 2094 // | |
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2095 // Input: char_I_actual_ppO2 : Current condition (in decibars). |
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2096 // char_I_step_is_1min : use 1min or 10min steps instead of 2sec. |
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2097 // CNS_fraction : velue before period. |
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2098 // Output: CNS_fraction, char_O_CNS_fraction |
| 167 | 2099 // |
| 116 | 2100 void deco_calc_CNS_fraction(void) |
| 2101 { | |
| 292 | 2102 overlay float time_factor = 1.0f; |
| 126 | 2103 RESET_C_STACK |
| 167 | 2104 |
| 471 | 2105 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
| 237 | 2106 assert( char_I_actual_ppO2 > 15 ); |
| 2107 | |
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2108 if( char_I_step_is_1min == 1 ) |
| 292 | 2109 time_factor = 30.0f; |
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2110 else if( char_I_step_is_1min == 2 ) |
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2111 time_factor = 300.0f; |
| 116 | 2112 |
| 126 | 2113 if (char_I_actual_ppO2 < 50) |
| 292 | 2114 ; // no changes |
| 126 | 2115 else if (char_I_actual_ppO2 < 60) |
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2116 CNS_fraction += time_factor/(-540.0 * char_I_actual_ppO2 + 54000.0); |
| 126 | 2117 else if (char_I_actual_ppO2 < 70) |
|
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2118 CNS_fraction += time_factor/(-450.0 * char_I_actual_ppO2 + 48600.0); |
| 126 | 2119 else if (char_I_actual_ppO2 < 80) |
|
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2120 CNS_fraction += time_factor/(-360.0 * char_I_actual_ppO2 + 42300.0); |
| 126 | 2121 else if (char_I_actual_ppO2 < 90) |
|
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2122 CNS_fraction += time_factor/(-270.0 * char_I_actual_ppO2 + 35100.0); |
| 126 | 2123 else if (char_I_actual_ppO2 < 110) |
|
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2124 CNS_fraction += time_factor/(-180.0 * char_I_actual_ppO2 + 27000.0); |
| 126 | 2125 else if (char_I_actual_ppO2 < 150) |
|
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2126 CNS_fraction += time_factor/( -90.0 * char_I_actual_ppO2 + 17100.0); |
| 126 | 2127 else if (char_I_actual_ppO2 < 160) |
|
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2128 CNS_fraction += time_factor/(-225.0 * char_I_actual_ppO2 + 37350.0); |
| 126 | 2129 else if (char_I_actual_ppO2 < 165) |
| 292 | 2130 CNS_fraction += time_factor*0.000755; // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity... Formula (A1) based on value for 1.55 and c=20 |
| 126 | 2131 else if (char_I_actual_ppO2 < 170) |
| 292 | 2132 CNS_fraction += time_factor*0.00102; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 |
| 126 | 2133 else if (char_I_actual_ppO2 < 175) |
| 292 | 2134 CNS_fraction += time_factor*0.00136; |
| 126 | 2135 else if (char_I_actual_ppO2 < 180) |
| 292 | 2136 CNS_fraction += time_factor*0.00180; |
| 126 | 2137 else if (char_I_actual_ppO2 < 185) |
| 292 | 2138 CNS_fraction += time_factor*0.00237; |
| 126 | 2139 else if (char_I_actual_ppO2 < 190) |
| 292 | 2140 CNS_fraction += time_factor*0.00310; |
| 126 | 2141 else if (char_I_actual_ppO2 < 195) |
| 292 | 2142 CNS_fraction += time_factor*0.00401; |
| 126 | 2143 else if (char_I_actual_ppO2 < 200) |
| 292 | 2144 CNS_fraction += time_factor*0.00517; |
| 126 | 2145 else if (char_I_actual_ppO2 < 230) |
| 292 | 2146 CNS_fraction += time_factor*0.0209; |
| 126 | 2147 else |
| 292 | 2148 CNS_fraction += time_factor*0.0482; // value for 2.5 |
| 116 | 2149 |
| 514 | 2150 if( CNS_fraction > 2.5 ) |
|
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2151 CNS_fraction = 2.55; |
| 514 | 2152 if( CNS_fraction < 0.0 ) |
| 126 | 2153 CNS_fraction = 0.0; |
| 2154 | |
|
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2155 char_O_CNS_fraction = (unsigned char)(100.0 * CNS_fraction + 0.5); |
| 167 | 2156 } |
| 116 | 2157 |
| 167 | 2158 ////////////////////////////////////////////////////////////////////////////// |
|
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|
2159 // deco_calc_CNS_planning |
|
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2160 // |
|
511
2a6293641d51
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|
2161 // Compute CNS during predicted ascent. |
| 488 | 2162 // |
| 2163 // Note: Needs a call to deco_push_tissues_to_vault(), | |
| 2164 // deco_pull_tissues_from_vault() to avoid trashing everything... | |
| 2165 // | |
| 2166 // Input: CNS_fraction, char_O_deco_time[], char_O_deco_depth[] | |
| 2167 // Output: CNS_fraction, char_O_CNS_fraction | |
| 2168 // | |
|
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2169 void deco_calc_CNS_planning(void) |
|
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2170 { |
|
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|
2171 overlay unsigned char backup_gas_last_depth; |
|
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2172 overlay unsigned char backup_gas_last_used; |
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2173 overlay unsigned short backup_gas_delay; |
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|
2174 overlay unsigned short backup_dive_mins; |
|
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|
2175 overlay unsigned char backup_actual_ppO2; |
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|
2176 |
|
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2177 RESET_C_STACK |
|
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|
2178 |
|
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|
2179 // Backup state machine |
|
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|
2180 backup_gas_last_depth = sim_gas_last_depth; |
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|
2181 backup_gas_last_used = sim_gas_last_used; |
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|
2182 backup_gas_delay = sim_gas_delay; |
|
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|
2183 backup_dive_mins = sim_dive_mins; |
|
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|
2184 backup_actual_ppO2 = char_I_actual_ppO2; |
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|
2185 |
|
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|
2186 // Uses 1min CNS period: |
|
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2187 char_I_step_is_1min = 1; |
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2188 |
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2189 //---- Retrieve bottom Gas used, and set variables. |
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2190 sim_gas_last_used = char_I_first_gas; |
|
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2191 sim_gas_last_depth = 0; // Surface gas marker. |
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2192 gas_switch_set(); // Sets initial calc_N2/He_ratio |
|
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2193 |
|
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|
2194 //---- CCR mode : do the full TTS at once -------------------------------- |
|
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2195 if( char_I_const_ppO2 != 0 ) |
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2196 { |
|
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|
2197 overlay unsigned short t; // Needs 16bits here ! |
|
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2198 char_I_actual_ppO2 = char_I_const_ppO2; |
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2199 for(t=0; t<int_O_ascenttime; ++t) |
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2200 deco_calc_CNS_fraction(); |
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2201 } |
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2202 else //---- OC mode : have to follow all gas switches... ----------------- |
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2203 { |
|
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2204 overlay unsigned char i = 0; // Decostop loop counter |
|
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2205 overlay float actual_ppO2; |
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2206 overlay unsigned char time, t; |
| 563 | 2207 overlay unsigned char deepest_first = (read_custom_function(54) == 0); |
|
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|
2208 |
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|
2209 //---- Ascent to surface delay |
|
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|
2210 // NOTE: count as if time is spent with bottom pressure, |
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|
2211 // AND the bottom gas |
|
541
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|
2212 actual_ppO2 = (pres_surface + char_I_bottom_depth * METER_TO_BAR) |
|
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2213 * (1.0 - calc_N2_ratio - calc_He_ratio); |
|
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2214 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
|
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|
2215 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
|
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2216 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
|
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|
2217 |
|
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|
2218 // Ascent time (rounded up): |
|
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|
2219 time = (unsigned char)(0.1 * char_I_bottom_depth + 0.5); |
|
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|
2220 |
|
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|
2221 for(t=0; t<time; ++t) |
|
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|
2222 { |
|
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|
2223 deco_calc_CNS_fraction(); |
|
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|
2224 sim_dive_mins++; |
|
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|
2225 } |
|
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|
2226 |
| 563 | 2227 //---- Do all further stops ------------------------------------------ |
|
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2228 for(i=0; i<NUM_STOPS; ++i) |
|
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2229 { |
| 563 | 2230 overlay unsigned char switch_gas; |
| 2231 | |
| 2232 //---- Get next stop, possibly in reverse order ------------------ | |
| 2233 if( deepest_first ) | |
| 2234 { | |
| 2235 time = char_O_deco_time[i]; | |
| 2236 temp_depth_limit = char_O_deco_depth[i]; | |
| 2237 } | |
| 2238 else | |
| 2239 { | |
| 2240 time = char_O_deco_time[(NUM_STOPS-1)-i]; | |
| 2241 temp_depth_limit = char_O_deco_depth[(NUM_STOPS-1)-i]; | |
| 2242 } | |
| 2243 if( time == 0 ) continue; | |
|
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2244 |
| 563 | 2245 //---- Gas Switch ? ---------------------------------------------- |
| 2246 switch_gas = temp_depth_limit & 0x80; // Switch flag. | |
| 2247 temp_depth_limit &= 0x7F; // True stop depth. | |
| 2248 | |
| 2249 if( switch_gas ) | |
| 2250 { | |
| 2251 gas_switch_deepest(); | |
| 2252 gas_switch_set(); | |
| 2253 } | |
| 2254 | |
| 2255 //---- Convert Depth and N2_ratio to ppO2 ------------------------ | |
|
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|
2256 actual_ppO2 = (pres_surface + temp_depth_limit * METER_TO_BAR) |
|
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2257 * (1.0 - calc_N2_ratio - calc_He_ratio); |
|
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2258 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
|
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2259 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
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2260 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
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2261 |
|
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2262 //---- Apply the stop |
|
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2263 for(t=0; t<time; ++t) |
|
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|
2264 { |
|
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|
2265 deco_calc_CNS_fraction(); |
|
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|
2266 sim_dive_mins++; |
|
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2267 } |
|
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2268 } |
| 488 | 2269 } |
| 2270 | |
| 563 | 2271 //---- Back to normal mode... -------------------------------------------- |
| 488 | 2272 char_I_step_is_1min = 0; |
|
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|
2273 sim_gas_last_depth = backup_gas_last_depth; |
|
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|
2274 sim_gas_last_used = backup_gas_last_used; |
|
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|
2275 sim_gas_delay = backup_gas_delay; |
|
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|
2276 sim_dive_mins = backup_dive_mins; |
|
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|
2277 char_I_actual_ppO2 = backup_actual_ppO2; |
|
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|
2278 } |
|
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|
2279 |
|
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2280 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 2281 // deco_calc_CNS_decrease_15min |
| 2282 // | |
| 116 | 2283 // new in v.101 |
| 167 | 2284 // |
| 116 | 2285 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2286 // (Used in sleepmode, for low battery mode). |
| 167 | 2287 // |
| 116 | 2288 // Output: char_O_CNS_fraction |
| 2289 // Uses and Updates: CNS_fraction | |
| 167 | 2290 // |
| 116 | 2291 void deco_calc_CNS_decrease_15min(void) |
| 2292 { | |
| 237 | 2293 RESET_C_STACK |
| 514 | 2294 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
| 237 | 2295 |
| 126 | 2296 CNS_fraction = 0.890899 * CNS_fraction; |
| 514 | 2297 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); |
| 167 | 2298 } |
| 116 | 2299 |
| 167 | 2300 ////////////////////////////////////////////////////////////////////////////// |
| 2301 // deco_calc_percentage | |
| 2302 // | |
| 116 | 2303 // new in v.101 |
| 167 | 2304 // |
| 116 | 2305 // calculates int_I_temp * char_I_temp / 100 |
| 2306 // output is int_I_temp | |
| 200 | 2307 // |
| 2308 // Used to compute NoFly remaining time. | |
|
222
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|
2309 // |
| 116 | 2310 void deco_calc_percentage(void) |
| 2311 { | |
|
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
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|
2312 RESET_C_STACK |
|
222
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|
2313 |
| 237 | 2314 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 564 | 2315 assert( int_I_temp < 5760 ); // Less than 4 days = 96h... |
| 237 | 2316 |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2317 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2318 |
|
554
896b6346ccd2
CHANGE: Allow up to 96h desat when computing NoFly (OSTC Planner).
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541
diff
changeset
|
2319 assert( int_I_temp < 5760 ); // Less than 96h too... |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2320 } |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2321 |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2322 |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
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|
2323 ////////////////////////////////////////////////////////////////////////////// |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2324 // deco_gas_volumes |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2325 // |
|
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|
2326 // new in v.111 |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2327 // |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2328 // calculates volumes for each gas. |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2329 // |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2330 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
d995e220ddac
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|
2331 // Gas list. |
|
d995e220ddac
BUGFIX Gas Usage when first gas is not #1 (bug BB22).
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|
2332 // char_I_first_gas is the bottom gas. |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2333 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
234
bb8940caebe1
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|
2334 // CF#54 == TRUE if shallowest stop first. |
|
478
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New SAC (CF56/CF57) in 5..50 l/min range (no more decimal).
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|
2335 // CF#56 == bottom liters/minutes (5 .. 50) or bar/min. |
|
fd8266b511cc
New SAC (CF56/CF57) in 5..50 l/min range (no more decimal).
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|
2336 // CF#57 == deco liters/minutes (5 .. 50) or bar/min. |
| 224 | 2337 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2338 // |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2339 void deco_gas_volumes(void) |
|
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2340 { |
| 338 | 2341 overlay float volumes[NUM_GAS]; |
|
478
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New SAC (CF56/CF57) in 5..50 l/min range (no more decimal).
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diff
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|
2342 overlay float bottom_usage, deco_usage; |
|
234
bb8940caebe1
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|
2343 overlay unsigned char i, deepest_first; |
| 646 | 2344 overlay unsigned char gas, depth; |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2345 RESET_C_STACK |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2346 |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2347 //---- initialize with bottom consumption -------------------------------- |
| 338 | 2348 for(i=0; i<NUM_GAS; ++i) // Nothing yet... |
|
240
d995e220ddac
BUGFIX Gas Usage when first gas is not #1 (bug BB22).
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|
2349 volumes[i] = 0.0; |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2350 |
| 338 | 2351 assert(1 <= char_I_first_gas && char_I_first_gas <= NUM_GAS); |
| 241 | 2352 gas = char_I_first_gas - 1; |
| 2353 | |
|
478
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New SAC (CF56/CF57) in 5..50 l/min range (no more decimal).
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|
2354 bottom_usage = (float) read_custom_function(56); |
|
580
32448d5ca734
BUGFIX: GasVolume should not count bottom time/depth in CCR mode.
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parents:
579
diff
changeset
|
2355 if( char_I_const_ppO2 == 0 && bottom_usage > 0.0 ) |
| 265 | 2356 volumes[gas] |
| 2357 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
| 2358 * char_I_bottom_time // in minutes. | |
| 2359 * bottom_usage; // In liter/minutes. | |
|
579
fff1d38625f0
BUGFIX: GasVolumes should check for a gas switch before the first stop.
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diff
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|
2360 |
|
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2361 //---- Ascent usage ------------------------------------------------------ |
|
234
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BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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|
2362 deepest_first = read_custom_function(54) == 0; |
|
511
2a6293641d51
NEW NDL NDL faster/more precise simu (but no closed formula for trimix).
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509
diff
changeset
|
2363 deco_usage = (float) read_custom_function(57); // In liter/minutes. |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2364 |
| 646 | 2365 depth = char_I_bottom_depth; |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2366 |
| 338 | 2367 for(i=0; i<NUM_STOPS; ++i) |
|
222
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|
2368 { |
|
658
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BUGFIX Gas volumes when many tanks and stops.
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|
2369 overlay unsigned char newDepth, time; |
|
234
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BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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|
2370 |
|
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|
2371 // Manage stops in reverse order (CF#54) |
|
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|
2372 if( deepest_first ) |
|
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|
2373 { |
| 241 | 2374 time = char_O_deco_time[i]; |
|
234
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BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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|
2375 if( time == 0 ) break; // End of table: done. |
|
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|
2376 |
|
658
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diff
changeset
|
2377 newDepth = char_O_deco_depth[i] & 0x7F; |
|
234
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|
2378 } |
|
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|
2379 else |
|
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|
2380 { |
|
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|
2381 time = char_O_deco_time[31-i]; |
|
658
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BUGFIX Gas volumes when many tanks and stops.
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646
diff
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|
2382 if( time == 0 ) continue; // not yet: still search table. |
|
234
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|
2383 |
|
658
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diff
changeset
|
2384 newDepth = char_O_deco_depth[31-i] & 0x7F; |
|
234
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|
2385 } |
|
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|
2386 |
|
658
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diff
changeset
|
2387 //---- Gas switch during this step ----------------------------------- |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2388 { |
|
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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diff
changeset
|
2389 overlay unsigned char newGas = 0; |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2390 overlay unsigned char newStop = 0; // NO CHANGE yet |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2391 overlay unsigned char j; |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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646
diff
changeset
|
2392 |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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diff
changeset
|
2393 for(j=0; j<NUM_GAS; ++j) |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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|
2394 { |
|
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BUGFIX Gas volumes when many tanks and stops.
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diff
changeset
|
2395 // Skip gas without changing depth: |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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646
diff
changeset
|
2396 if( ! char_I_deco_gas_change[j] ) |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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diff
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|
2397 continue; |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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diff
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|
2398 // Select gas changed between [newDepth .. depth] |
|
75dc320f4681
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646
diff
changeset
|
2399 if( newDepth <= char_I_deco_gas_change[j] |
|
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BUGFIX Gas volumes when many tanks and stops.
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|
2400 && char_I_deco_gas_change[j] <= depth ) |
| 646 | 2401 { |
|
658
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diff
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|
2402 // Keep the DEEPEST gas in that range: |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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646
diff
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|
2403 // Note: that = means changing gas at BEGINNING of this stop. |
|
75dc320f4681
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diff
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|
2404 if( char_I_deco_gas_change[j] >= newStop ) |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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|
2405 { |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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diff
changeset
|
2406 newGas = j; |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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diff
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|
2407 newStop = char_I_deco_gas_change[j]; |
|
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|
2408 } |
| 646 | 2409 } |
|
658
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|
2410 } |
|
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|
2411 |
|
658
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|
2412 if( newStop ) // Did we find something ? |
|
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BUGFIX Gas volumes when many tanks and stops.
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|
2413 { |
|
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diff
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|
2414 // usage BEFORE gas switch (if any), at 10m/min : |
|
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diff
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|
2415 if( deco_usage > 0.0 && depth > newStop ) |
|
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BUGFIX Gas volumes when many tanks and stops.
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646
diff
changeset
|
2416 // Plus usage during ascent to the next stop, at 10m/min. |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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diff
changeset
|
2417 volumes[gas] += ((depth+newStop)*0.05 + 1.0) // average depth --> bar. |
|
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BUGFIX Gas volumes when many tanks and stops.
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|
2418 * (depth-newStop)*0.1 // metre --> min |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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|
2419 * deco_usage; |
| 646 | 2420 |
|
658
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changeset
|
2421 // Do gas switch: |
|
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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diff
changeset
|
2422 gas = newGas; |
|
75dc320f4681
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diff
changeset
|
2423 depth = newStop; |
|
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BUGFIX Gas volumes when many tanks and stops.
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|
2424 } |
|
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BUGFIX Gas volumes when many tanks and stops.
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diff
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|
2425 } |
| 646 | 2426 |
| 2427 // usage AFTER gas switch (if any), at 10m/min : | |
| 2428 if( depth > newDepth ) | |
| 2429 volumes[gas] += ((depth+newDepth)*0.05 + 1.0) // average depth --> bar. | |
| 2430 * (depth-newDepth)*0.1 // metre --> min | |
| 2431 * deco_usage; | |
| 2432 | |
| 2433 // Do stop: | |
| 2434 depth = newDepth; | |
| 2435 | |
| 2436 // Usage at stop: | |
|
478
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|
2437 if( deco_usage > 0.0 ) |
| 265 | 2438 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. |
| 2439 * time // in minutes. | |
| 646 | 2440 * deco_usage; // in xxx / min @ 1bar. |
| 265 | 2441 else |
| 2442 volumes[gas] = 65535.0; | |
|
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|
2443 } |
|
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|
2444 |
| 646 | 2445 // From last stop to surface |
| 2446 if( deco_usage > 0.0 ) | |
| 2447 volumes[gas] += (depth*0.05 + 1.0) // avg depth --> bar. | |
| 2448 * depth * 0.1 // time to surface, in minutes. | |
| 2449 * deco_usage; // in xxx / min @ 1bar. | |
| 2450 | |
|
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|
2451 //---- convert results for the ASM interface ----------------------------- |
| 338 | 2452 for(i=0; i<NUM_GAS; ++i) |
|
441
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changeset
|
2453 if( volumes[i] > 65534.0 ) |
| 224 | 2454 int_O_gas_volumes[i] = 65535; |
|
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|
2455 else |
|
441
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NEW: Decoplanner OC volumes in liters (or bars), up to 65000.
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changeset
|
2456 int_O_gas_volumes[i] = (unsigned short)(volumes[i] + 0.5); |
| 116 | 2457 } |
| 2458 | |
| 167 | 2459 ////////////////////////////////////////////////////////////////////////////// |
| 2460 | |
| 116 | 2461 void deco_push_tissues_to_vault(void) |
| 2462 { | |
| 167 | 2463 overlay unsigned char x; |
|
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
JeanDo
parents:
116
diff
changeset
|
2464 RESET_C_STACK |
| 167 | 2465 |
| 116 | 2466 cns_vault = CNS_fraction; |
| 339 | 2467 for (x=0;x<NUM_COMP;x++) |
| 2468 { | |
| 2469 pres_tissue_N2_vault[x] = pres_tissue_N2[x]; | |
| 2470 pres_tissue_He_vault[x] = pres_tissue_He[x]; | |
| 2471 } | |
| 116 | 2472 } |
| 167 | 2473 |
| 116 | 2474 void deco_pull_tissues_from_vault(void) |
| 2475 { | |
| 167 | 2476 overlay unsigned char x; |
|
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
JeanDo
parents:
116
diff
changeset
|
2477 RESET_C_STACK |
| 167 | 2478 |
| 339 | 2479 for (x=0; x<NUM_COMP; x++) |
| 2480 { | |
| 2481 pres_tissue_N2[x] = pres_tissue_N2_vault[x]; | |
| 2482 pres_tissue_He[x] = pres_tissue_He_vault[x]; | |
| 2483 } | |
| 292 | 2484 |
| 2485 // Restore both CNS variable, too. | |
| 2486 CNS_fraction = cns_vault; | |
| 514 | 2487 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); |
| 116 | 2488 } |
| 2489 | |
| 167 | 2490 ////////////////////////////////////////////////////////////////////////////// |
| 2491 // | |
| 184 | 2492 #ifndef CROSS_COMPILE |
| 2493 void main() {} | |
| 2494 #endif |