Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 760:e16e636def61
2.74 release
author | heinrichsweikamp |
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date | Sun, 01 Dec 2013 10:33:12 +0100 |
parents | 50ed645c251d |
children | 3b1af9891019 |
rev | line source |
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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! |
169
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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. |
275
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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. |
293
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75 // 2011/04/10: [jDG] Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco(). |
275
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76 // 2011/04/15: [jDG] Store low_depth in 32bits (w/o rounding), for a better stability. |
293
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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. |
334
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79 // 2011/05/02: [jDG] Added "Future TTS" function (CF58). |
338 | 80 // 2011/05/17: [jDG] Various cleanups. |
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). | |
697 | 88 // 2013/03/05: [jDG] Should vault low_depth too. |
698 | 89 // 2013/03/05: [jDG] Wrobell remark: ascent_to_first_stop works better with finer steps (2sec). |
711
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90 // 2013/05/08: [jDG] A. Salm remark: NOAA tables for CNS are in ATA, not bar. |
755 | 91 // 2013/10/22: [mH] Remove CF55 stuff |
116 | 92 // |
167 | 93 // TODO: |
94 // + Allow to abort MD2 calculation (have to restart next time). | |
95 // | |
96 // Literature: | |
200 | 97 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
116 | 98 // 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 |
99 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
100 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
101 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
102 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
167 | 103 // |
104 // | |
116 | 105 |
106 // ********************* | |
107 // ** I N C L U D E S ** | |
108 // ********************* | |
109 #include <math.h> | |
167 | 110 |
192 | 111 // *********************************************** |
112 // ** V A R I A B L E S D E F I N I T I O N S ** | |
113 // *********************************************** | |
114 | |
115 #include "p2_definitions.h" | |
275
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116 #define TEST_MAIN |
509 | 117 #include "../OSTC_code_asm_part1/shared_definitions.h" |
192 | 118 |
200 | 119 // Water vapour partial pressure in the lumb. |
527 | 120 #define ppWater 0.0627 |
317 | 121 #define METER_TO_BAR 0.09985 |
122 #define BAR_TO_METER 10.0150 // (1.0/METER_TO_BAR) | |
200 | 123 |
491
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124 // Surface security factor |
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125 #define SURFACE_DESAT_FACTOR 0.7042 |
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126 |
167 | 127 // ************************* |
128 // ** P R O T O T Y P E S ** | |
129 // ************************* | |
130 | |
131 static void calc_hauptroutine(void); | |
132 static void calc_nullzeit(void); | |
133 | |
192 | 134 static void calc_tissue(PARAMETER unsigned char period); |
258 | 135 static void calc_limit(void); |
192 | 136 |
167 | 137 static void clear_tissue(void); |
138 static void calc_ascenttime(void); | |
139 static void update_startvalues(void); | |
169
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140 static void clear_deco_table(void); |
471 | 141 static unsigned char update_deco_table(void); |
192 | 142 |
143 static void sim_tissue(PARAMETER unsigned char period); | |
144 static void sim_limit(PARAMETER float GF_current); | |
312
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145 static void sim_extra_time(void); |
368 | 146 static void calc_dive_interval(void); |
312
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147 |
167 | 148 static void calc_gradient_factor(void); |
149 static void calc_wo_deco_step_1_min(void); | |
150 | |
151 static void calc_hauptroutine_data_input(void); | |
152 static void calc_hauptroutine_update_tissues(void); | |
153 static void calc_hauptroutine_calc_deco(void); | |
169
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154 static void sim_ascent_to_first_stop(void); |
167 | 155 |
241 | 156 static unsigned char gas_switch_deepest(void); |
157 static void gas_switch_set(void); | |
217 | 158 |
241 | 159 static unsigned char calc_nextdecodepth(void); |
116 | 160 |
200 | 161 //---- Bank 4 parameters ----------------------------------------------------- |
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162 #ifndef UNIX |
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163 # pragma udata bank4=0x400 |
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164 #endif |
116 | 165 |
166 static float GF_low; | |
167 static float GF_high; | |
168 static float GF_delta; | |
192 | 169 static float locked_GF_step; // GF_delta / low_depth |
170 | |
171 static unsigned char temp_depth_limit; | |
695 | 172 float low_depth; // Depth of deepest stop |
171 | 173 |
757 | 174 static unsigned char internal_deco_time [NUM_STOPS]; |
338 | 175 static unsigned char internal_deco_depth[NUM_STOPS]; |
757 | 176 static unsigned char internal_deco_gas [NUM_STOPS]; |
116 | 177 |
178 static float cns_vault; | |
697 | 179 static float low_depth_vault; |
339 | 180 static float pres_tissue_N2_vault[NUM_COMP]; |
181 static float pres_tissue_He_vault[NUM_COMP]; | |
116 | 182 |
163 | 183 //---- Bank 5 parameters ----------------------------------------------------- |
601
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184 #ifndef UNIX |
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185 # pragma udata bank5=0x500 |
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186 #endif |
163 | 187 |
167 | 188 static unsigned char ci; |
116 | 189 static float pres_respiration; |
190 static float pres_surface; | |
191 static float temp_deco; | |
236 | 192 static float ppN2; |
200 | 193 static float ppHe; |
116 | 194 static float temp_tissue; |
200 | 195 static float N2_ratio; // Breathed gas nitrogen ratio. |
196 static float He_ratio; // Breathed gas helium ratio. | |
197 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
198 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
199 static float var_He_a; // Bühlmann a, for current He tissue. | |
200 static float var_He_b; // Bühlmann b, for current He tissue. | |
201 static float var_N2_e; // Exposition, for current N2 tissue. | |
202 static float var_He_e; // Exposition, for current He tissue. | |
509 | 203 static float var_N2_ht; // Half-time for current N2 tissue. |
204 static float var_He_ht; // Half-time for current N2 tissue. | |
116 | 205 |
338 | 206 static float pres_diluent; // new in v.101 |
207 static float const_ppO2; // new in v.101 | |
116 | 208 |
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209 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
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210 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. |
203 | 211 static unsigned short sim_dive_mins; // Simulated dive time. |
200 | 212 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
213 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
214 static float CNS_fraction; // new in v.101 | |
215 static float float_saturation_multiplier; // new in v.101 | |
216 static float float_desaturation_multiplier; // new in v.101 | |
338 | 217 static float float_deco_distance; // new in v.101 |
167 | 218 |
338 | 219 static unsigned char deco_gas_change[NUM_GAS]; // new in v.109 |
167 | 220 |
757 | 221 // Simulation context: used to predict ascent. |
222 unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
223 float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
224 | |
225 // Real context: what we are doing now. | |
226 static float calc_lead_tissue_limit; // | |
227 | |
163 | 228 //---- Bank 6 parameters ----------------------------------------------------- |
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229 #ifndef UNIX |
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230 # pragma udata bank6=0x600 |
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231 #endif |
116 | 232 |
339 | 233 float pres_tissue_N2[NUM_COMP]; |
234 float pres_tissue_He[NUM_COMP]; | |
509 | 235 float sim_pres_tissue_N2[NUM_COMP]; // 16 floats = 64 bytes. |
236 float sim_pres_tissue_He[NUM_COMP]; // 16 floats = 64 bytes. | |
116 | 237 |
163 | 238 //---- Bank 7 parameters ----------------------------------------------------- |
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239 #ifndef UNIX |
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240 # pragma udata bank7=0x700 |
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241 #endif |
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242 |
509 | 243 // EMPTY ... |
116 | 244 |
163 | 245 //---- Bank 8 parameters ----------------------------------------------------- |
601
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246 #ifndef UNIX |
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247 # pragma udata bank8=0x800 |
163 | 248 |
601
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249 static char md_pi_subst[256]; |
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250 # define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
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251 |
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252 #endif |
116 | 253 |
163 | 254 //---- Bank 9 parameters ----------------------------------------------------- |
601
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255 #ifndef UNIX |
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256 # pragma udata bank9=0x900 |
116 | 257 |
601
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258 static char md_state[48]; // DONT MOVE : has to be at the beginning of bank 9 for the asm code!!! |
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259 #endif |
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260 |
116 | 261 |
167 | 262 ////////////////////////////////////////////////////////////////////////////// |
263 ////////////////////////////////////////////////////////////////////////////// | |
264 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
265 ////////////////////////////////////////////////////////////////////////////// | |
266 ////////////////////////////////////////////////////////////////////////////// | |
267 // | |
268 // End of PROM code is 17F00, So push tables on PROM top... | |
269 // | |
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270 #ifndef UNIX |
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271 # pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. |
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272 #endif |
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273 |
167 | 274 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) |
116 | 275 |
167 | 276 // Magic table to compute the MD2 HASH |
277 // | |
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278 #ifndef UNIX |
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279 # pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... |
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280 rom const rom unsigned short md_pi[] = |
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281 { |
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282 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 |
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283 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA |
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284 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 |
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285 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A |
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286 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 |
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287 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 |
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288 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 |
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289 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 |
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290 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 |
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291 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F |
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292 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 |
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293 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 |
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294 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A |
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295 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 |
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296 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A |
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297 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 |
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298 }; |
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299 #endif |
116 | 300 |
167 | 301 ////////////////////////////////////////////////////////////////////////////// |
302 ////////////////////////////////////////////////////////////////////////////// | |
303 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
304 ////////////////////////////////////////////////////////////////////////////// | |
305 ////////////////////////////////////////////////////////////////////////////// | |
306 // | |
116 | 307 // all new in v.102 |
308 // moved from 0x0D000 to 0x0C000 in v.108 | |
601
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309 #ifndef UNIX |
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310 # pragma code p2_deco = 0x0C000 |
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311 #endif |
116 | 312 |
167 | 313 ////////////////////////////////////////////////////////////////////////////// |
314 ////////////////////////////////////////////////////////////////////////////// | |
315 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
316 ////////////////////////////////////////////////////////////////////////////// | |
317 ////////////////////////////////////////////////////////////////////////////// | |
318 | |
235 | 319 ////////////////////////////////////////////////////////////////////////////// |
257
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320 // Bump to blue-screen when an assert is wrong |
235 | 321 #ifdef __DEBUG |
322 void assert_failed(PARAMETER short int line) | |
323 { | |
681 | 324 extern void DISP_resetdebugger(void); |
235 | 325 extern unsigned short temp10; |
326 | |
257
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327 temp10 = line; // Show source line number as stack depth. |
681 | 328 DISP_resetdebugger(); |
235 | 329 } |
330 #endif | |
257
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331 |
235 | 332 ////////////////////////////////////////////////////////////////////////////// |
333 // When calling C code from ASM context, the data stack pointer and | |
334 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
335 | |
336 #ifdef CROSS_COMPILE | |
337 # define RESET_C_STACK | |
338 #else | |
339 # ifdef __DEBUG | |
340 # define RESET_C_STACK fillDataStack(); | |
341 void fillDataStack(void) | |
342 { | |
343 _asm | |
344 LFSR 1,C_STACK | |
345 MOVLW 0xCC | |
346 loop: MOVWF POSTINC1,0 | |
347 TSTFSZ FSR1L,0 | |
348 BRA loop | |
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349 |
235 | 350 LFSR 1,C_STACK |
351 LFSR 2,C_STACK | |
352 _endasm | |
353 } | |
354 # else | |
355 # define RESET_C_STACK \ | |
356 _asm \ | |
357 LFSR 1, C_STACK \ | |
358 LFSR 2, C_STACK \ | |
359 _endasm | |
360 # endif | |
361 #endif | |
362 | |
363 ////////////////////////////////////////////////////////////////////////////// | |
257
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364 // Read CF values from the C code. |
235 | 365 |
488 | 366 #ifdef CROSS_COMPILE |
367 // Full description of the OSTC EEPROM map, including CF values. | |
368 # include "OSTC_eeprom.h" | |
369 #endif | |
370 | |
203 | 371 static short read_custom_function(PARAMETER unsigned char cf) |
167 | 372 { |
184 | 373 #ifdef CROSS_COMPILE |
743 | 374 return READ_CF_MACRO(cf); |
184 | 375 #else |
167 | 376 extern unsigned char hi, lo; |
377 extern void getcustom15(); | |
378 _asm | |
379 movff cf,WREG | |
380 call getcustom15,0 | |
381 movff lo,PRODL | |
382 movff hi,PRODH | |
383 _endasm | |
184 | 384 #endif |
167 | 385 } |
386 | |
387 ////////////////////////////////////////////////////////////////////////////// | |
257
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388 // Fast subroutine to read RTC timer 3. |
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389 // Note: result is in 1/32 of msecs. |
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390 static unsigned short tmr3(void) |
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391 { |
261 | 392 #ifndef CROSS_COMPILE |
257
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393 _asm |
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394 movff 0xfb2,PRODL // TMR3L |
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395 movff 0xfb3,PRODH // TMR3H |
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396 _endasm // result in PRODH:PRODL. |
261 | 397 #else |
398 return 0; | |
399 #endif | |
257
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400 } |
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401 |
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402 ////////////////////////////////////////////////////////////////////////////// |
258 | 403 // read buhlmann tables A and B for compatriment ci |
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404 // |
258 | 405 static void read_buhlmann_coefficients(void) |
165 | 406 { |
184 | 407 #ifndef CROSS_COMPILE |
167 | 408 // Note: we don't use far rom pointer, because the |
338 | 409 // 24 bits is too complex, hence we have to set |
167 | 410 // the UPPER page ourself... |
411 // --> Set zero if tables are moved to lower pages ! | |
412 _asm | |
413 movlw 1 | |
414 movwf TBLPTRU,0 | |
415 _endasm | |
184 | 416 #endif |
258 | 417 |
564 | 418 assert( ci < NUM_COMP ); |
338 | 419 |
420 // Use an interleaved array (AoS) to access coefficients with a | |
421 // single addressing. | |
422 { | |
423 overlay rom const float* ptr = &buhlmann_ab[4*ci]; | |
424 var_N2_a = *ptr++; | |
425 var_N2_b = *ptr++; | |
426 var_He_a = *ptr++; | |
427 var_He_b = *ptr++; | |
428 } | |
258 | 429 } |
430 | |
431 ////////////////////////////////////////////////////////////////////////////// | |
432 // read buhlmann tables for compatriment ci | |
433 // If period == 0 : 2sec interval | |
434 // 1 : 1 min interval | |
435 // 2 : 10 min interval. | |
436 static void read_buhlmann_times(PARAMETER char period) | |
437 { | |
438 #ifndef CROSS_COMPILE | |
439 // Note: we don't use far rom pointer, because the | |
440 // 24 bits is to complex, hence we have to set | |
441 // the UPPER page ourself... | |
442 // --> Set zero if tables are moved to lower pages ! | |
443 _asm | |
444 movlw 1 | |
445 movwf TBLPTRU,0 | |
446 _endasm | |
447 #endif | |
338 | 448 |
564 | 449 assert( ci < NUM_COMP ); |
258 | 450 |
165 | 451 // Integration intervals. |
167 | 452 switch(period) |
165 | 453 { |
454 case 0: //---- 2 sec ----------------------------------------------------- | |
338 | 455 { |
456 overlay rom const float* ptr = &e2secs[2*ci]; | |
457 var_N2_e = *ptr++; | |
458 var_He_e = *ptr++; | |
459 } | |
165 | 460 break; |
461 | |
462 case 1: //---- 1 min ----------------------------------------------------- | |
338 | 463 { |
464 overlay rom const float* ptr = &e1min[2*ci]; | |
465 var_N2_e = *ptr++; | |
466 var_He_e = *ptr++; | |
467 } | |
165 | 468 break; |
469 | |
470 case 2: //---- 10 min ---------------------------------------------------- | |
338 | 471 { |
472 overlay rom const float* ptr = &e10min[2*ci]; | |
473 var_N2_e = *ptr++; | |
474 var_He_e = *ptr++; | |
475 } | |
165 | 476 break; |
197 | 477 |
478 default: | |
527 | 479 assert(0); // Never go there... |
165 | 480 } |
481 } | |
482 | |
483 ////////////////////////////////////////////////////////////////////////////// | |
509 | 484 // read buhlmann tables for compatriment ci |
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485 // |
509 | 486 static void read_buhlmann_ht(void) |
487 { | |
488 | |
489 #ifndef CROSS_COMPILE | |
490 // Note: we don't use far rom pointer, because the | |
491 // 24 bits is to complex, hence we have to set | |
492 // the UPPER page ourself... | |
493 // --> Set zero if tables are moved to lower pages ! | |
494 _asm | |
495 movlw 1 | |
496 movwf TBLPTRU,0 | |
497 _endasm | |
498 #endif | |
499 | |
564 | 500 assert( ci < NUM_COMP ); |
509 | 501 { |
502 overlay rom const float* ptr = &buhlmann_ht[2*ci]; | |
503 var_N2_ht = *ptr++; | |
504 var_He_ht = *ptr++; | |
711
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505 } |
509 | 506 |
507 assert( 4.0 <= var_N2_ht && var_N2_ht <= 635.0 ); | |
508 assert( 1.5099 <= var_He_ht && var_He_ht <= 240.03 ); | |
509 } | |
510 | |
511 ////////////////////////////////////////////////////////////////////////////// | |
340
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512 // calc_nextdecodepth |
165 | 513 // |
116 | 514 // new in v.102 |
165 | 515 // |
116 | 516 // INPUT, changing during dive: |
509 | 517 // temp_deco |
192 | 518 // low_depth |
167 | 519 // |
116 | 520 // INPUT, fixed during dive: |
167 | 521 // pres_surface |
522 // GF_delta | |
523 // GF_high | |
524 // GF_low | |
171 | 525 // char_I_depth_last_deco |
167 | 526 // float_deco_distance |
527 // | |
241 | 528 // RETURN TRUE iff a stop is needed. |
529 // | |
116 | 530 // OUTPUT |
171 | 531 // locked_GF_step |
167 | 532 // temp_depth_limt |
192 | 533 // low_depth |
167 | 534 // |
241 | 535 static unsigned char calc_nextdecodepth(void) |
167 | 536 { |
241 | 537 //--- Max ascent speed --------------------------------------------------- |
538 // Recompute leading gas limit, at current depth: | |
317 | 539 overlay float depth = (temp_deco - pres_surface) * BAR_TO_METER; |
241 | 540 |
541 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
302 | 542 overlay float min_depth = (depth > 10.0) ? (depth - 10.0) : 0.0; |
711
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543 |
241 | 544 // Do we need to stop at current depth ? |
545 overlay unsigned char need_stop = 0; | |
546 | |
547 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
548 | |
212 | 549 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
711
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550 if( char_I_deco_model != 0 ) |
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551 { |
562 | 552 overlay unsigned char first_stop = 0; |
553 overlay float p; | |
554 | |
567 | 555 sim_limit( GF_low ); |
562 | 556 p = sim_lead_tissue_limit - pres_surface; |
695 | 557 p *= BAR_TO_METER; |
562 | 558 if( p <= 0.0f ) |
559 goto no_deco_stop; // We can surface directly... | |
512
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560 |
695 | 561 // Store the deepest point needing a deco stop as the LOW reference for GF. |
562 // NOTE: following stops will be validated using this LOW-HIGH gf scale, | |
563 // so if we want to keep coherency, we should not validate this stop | |
564 // yet, but apply the search to it, as for all the following stops afterward. | |
565 if( p > low_depth ) | |
566 { | |
567 low_depth = p; | |
568 locked_GF_step = GF_delta / low_depth; | |
569 } | |
570 | |
562 | 571 if( p < min_depth ) |
572 goto no_deco_stop; // First stop is higher than 1' ascent. | |
275
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573 |
695 | 574 // Round to multiple of 3m. |
575 first_stop = 3 * (short)(0.9995f + p*0.333333f); | |
562 | 576 assert( first_stop < 128 ); |
577 | |
578 // Apply correction for the shallowest stop. | |
579 if( first_stop == 3 ) // new in v104 | |
580 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
171 | 581 |
562 | 582 // We have a stop candidate. |
583 // But maybe ascending to the next stop will diminish the constraint, | |
584 // because the GF might decrease more than the preassure gradient... | |
585 while(first_stop > 0) | |
586 { | |
587 overlay unsigned char next_stop; // Next depth (0..90m) | |
171 | 588 |
562 | 589 // Check max speed, or reaching surface. |
590 if( first_stop <= min_depth ) | |
591 goto no_deco_stop; | |
171 | 592 |
562 | 593 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
594 next_stop = 0; | |
595 else if( first_stop == 6 ) | |
596 next_stop = char_I_depth_last_deco; | |
597 else | |
598 next_stop = first_stop - 3; // Index of next (upper) stop. | |
711
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599 |
562 | 600 // Total preassure at the new stop candidate: |
695 | 601 p = next_stop * METER_TO_BAR |
711
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602 + pres_surface; |
167 | 603 |
695 | 604 // Recompute limit for this new stop: |
605 if( !low_depth || next_stop > low_depth ) | |
606 sim_limit( GF_low ); | |
607 else | |
608 sim_limit( GF_high - next_stop * locked_GF_step ); | |
192 | 609 |
695 | 610 // Check upper limit (lowest ambiant pressure tolerated): |
611 if( sim_lead_tissue_limit >= p ) | |
612 goto deco_stop_found; // Ascent to next_stop forbiden. | |
562 | 613 |
614 // Else, validate that stop and loop... | |
615 first_stop = next_stop; | |
616 } | |
171 | 617 |
562 | 618 no_deco_stop: |
711
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619 temp_depth_limit = min_depth; |
562 | 620 goto done; |
212 | 621 |
695 | 622 deco_stop_found: |
562 | 623 // next stop is the last validated depth found, aka first_stop |
624 need_stop = 1; // Hit. | |
625 temp_depth_limit = first_stop; // Stop depth, in meter. | |
626 | |
627 done: | |
628 ; | |
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629 } |
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630 else //---- ZH-L16 model ------------------------------------------------- |
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631 { |
192 | 632 overlay float pres_gradient; |
633 | |
711
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634 // Original model |
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635 // optimized in v.101 |
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636 // char_I_depth_last_deco included in v.101 |
116 | 637 |
192 | 638 // Compute sim_lead_tissue_limit too, but just once. |
639 sim_limit(1.0); | |
640 | |
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641 pres_gradient = sim_lead_tissue_limit - pres_surface; |
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642 if (pres_gradient >= 0) |
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643 { |
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644 pres_gradient *= BAR_TO_METER/3; // Bar --> stop number; |
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645 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
241 | 646 need_stop = 1; // Hit. |
647 | |
648 // Implement last stop at 4m/5m/6m... | |
711
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649 if( temp_depth_limit == 3 ) |
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650 temp_depth_limit = char_I_depth_last_deco; |
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651 } |
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652 else |
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653 temp_depth_limit = 0; |
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654 } |
212 | 655 |
217 | 656 //---- Check gas change -------------------------------------------------- |
241 | 657 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
658 | |
659 return need_stop; | |
167 | 660 } |
116 | 661 |
167 | 662 ////////////////////////////////////////////////////////////////////////////// |
169
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663 // copy_deco_table |
167 | 664 // |
169
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665 // Buffer the stops, once computed, so we can continue to display them |
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666 // while computing the next set. |
167 | 667 // |
169
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668 static void copy_deco_table(void) |
116 | 669 { |
169
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670 // Copy depth of the first (deepest) stop, because when reversing |
711
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671 // order, it will be hard to find... |
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672 char_O_first_deco_depth = internal_deco_depth[0] & 0x7F; |
169
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673 char_O_first_deco_time = internal_deco_time [0]; |
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674 |
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675 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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676 { |
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677 overlay unsigned char x, y; |
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678 |
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679 //---- First: search the first non-null depth |
339 | 680 for(x=(NUM_STOPS-1); x != 0; --x) |
169
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681 if( internal_deco_depth[x] != 0 ) break; |
116 | 682 |
169
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683 //---- Second: copy to output table (in reverse order) |
338 | 684 for(y=0; y<NUM_STOPS; y++, --x) |
169
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685 { |
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686 char_O_deco_depth[y] = internal_deco_depth[x]; |
633
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687 char_O_deco_time_for_log[y] = internal_deco_time [x]; |
169
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688 char_O_deco_time [y] = internal_deco_time [x]; |
757 | 689 char_O_deco_gas [y] = internal_deco_gas [x]; |
169
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690 |
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691 // Stop only once the last transfer is done. |
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692 if( x == 0 ) break; |
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693 } |
116 | 694 |
169
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695 //---- Third: fill table end with null |
339 | 696 for(y++; y<NUM_STOPS; y++) |
169
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697 { |
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698 char_O_deco_time [y] = 0; |
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699 char_O_deco_depth[y] = 0; |
630
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700 char_O_deco_time_for_log[y] = 0; |
757 | 701 char_O_deco_gas [y] = 0; |
169
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702 } |
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703 } |
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704 else //---- Straight copy ------------------------------------------------ |
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705 { |
630
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706 overlay unsigned char x, y; |
167 | 707 |
339 | 708 for(x=0; x<NUM_STOPS; x++) |
169
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709 { |
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710 char_O_deco_depth[x] = internal_deco_depth[x]; |
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711 char_O_deco_time [x] = internal_deco_time [x]; |
757 | 712 char_O_deco_gas [x] = internal_deco_gas [x]; |
169
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713 } |
630
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714 |
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715 //Now fill the char_O_deco_time_for_log array |
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716 //---- First: search the first non-null depth |
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717 for(x=(NUM_STOPS-1); x != 0; --x) |
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718 if( internal_deco_depth[x] != 0 ) break; |
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719 |
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720 //---- Second: copy to output table (in reverse order) |
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721 for(y=0; y<NUM_STOPS; y++, --x) |
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722 { |
633
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723 char_O_deco_time_for_log[y] = internal_deco_time [x]; |
630
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724 |
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725 // Stop only once the last transfer is done. |
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726 if( x == 0 ) break; |
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727 } |
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728 |
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729 //---- Third: fill table end with null |
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730 for(y++; y<NUM_STOPS; y++) |
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731 { |
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732 char_O_deco_time_for_log [y] = 0; |
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733 } |
169
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734 } |
167 | 735 } |
116 | 736 |
167 | 737 ////////////////////////////////////////////////////////////////////////////// |
116 | 738 // temp_tissue_safety // |
167 | 739 // |
116 | 740 // outsourced in v.102 |
167 | 741 // |
742 // Apply safety factors for brand ZH-L16 model. | |
743 // | |
744 static void temp_tissue_safety(void) | |
116 | 745 { |
197 | 746 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
747 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
748 | |
711
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749 if( char_I_deco_model == 0 ) |
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750 { |
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751 if( temp_tissue < 0.0 ) |
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|
752 temp_tissue *= float_desaturation_multiplier; |
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753 else |
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|
754 temp_tissue *= float_saturation_multiplier; |
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diff
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|
755 } |
167 | 756 } |
116 | 757 |
167 | 758 ////////////////////////////////////////////////////////////////////////////// |
759 ////////////////////////////////////////////////////////////////////////////// | |
116 | 760 // ** THE JUMP-IN CODE ** |
761 // ** for the asm code ** | |
167 | 762 ////////////////////////////////////////////////////////////////////////////// |
763 ////////////////////////////////////////////////////////////////////////////// | |
122
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764 |
167 | 765 ////////////////////////////////////////////////////////////////////////////// |
169
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766 // Called every 2 seconds during diving. |
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767 // update tissues every time. |
184 | 768 // |
169
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769 // Every 6 seconds (or slower when TTS > 16): |
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770 // - update deco table (char_O_deco_time/depth) with new values. |
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771 // - update ascent time, |
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772 // - set status to zero (so we can check there is new results). |
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773 // |
116 | 774 void deco_calc_hauptroutine(void) |
775 { | |
122
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776 RESET_C_STACK |
116 | 777 calc_hauptroutine(); |
778 int_O_desaturation_time = 65535; | |
779 } | |
780 | |
167 | 781 ////////////////////////////////////////////////////////////////////////////// |
184 | 782 // Reset decompression model: |
783 // + Set all tissues to equilibrium with Air at ambient pressure. | |
784 // + Reset last stop to 0m | |
785 // + Reset all model output. | |
116 | 786 void deco_clear_tissue(void) |
787 { | |
122
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788 RESET_C_STACK |
116 | 789 clear_tissue(); |
790 } | |
791 | |
167 | 792 ////////////////////////////////////////////////////////////////////////////// |
278 | 793 // Called every 1 min during decoplanning. |
794 // Update tissues for 1 min. | |
795 // | |
796 void deco_calc_tissue(void) | |
797 { | |
798 RESET_C_STACK | |
799 calc_hauptroutine_update_tissues(); | |
711
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800 } |
278 | 801 |
802 ////////////////////////////////////////////////////////////////////////////// | |
167 | 803 |
116 | 804 void deco_calc_wo_deco_step_1_min(void) |
805 { | |
122
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806 RESET_C_STACK |
116 | 807 calc_wo_deco_step_1_min(); |
808 deco_calc_desaturation_time(); | |
809 } | |
810 | |
167 | 811 ////////////////////////////////////////////////////////////////////////////// |
812 | |
368 | 813 void deco_calc_dive_interval(void) |
814 { | |
815 RESET_C_STACK | |
816 calc_dive_interval(); | |
817 } | |
818 | |
241 | 819 ////////////////////////////////////////////////////////////////////////////// |
820 // Find current gas in the list (if any). | |
711
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|
821 // |
513 | 822 // Input: char_I_current_gas = 1..6 |
241 | 823 // |
513 | 824 // Output: sim_gas_last_depth = 0..5, temp_depth_limit. |
241 | 825 // |
826 static void gas_switch_find_current(void) | |
827 { | |
513 | 828 assert( 0 < char_I_current_gas && char_I_current_gas <= (NUM_GAS+1) ); |
247
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829 |
388 | 830 if( char_I_current_gas <= NUM_GAS ) // Gas1..Gas5 |
353
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831 { |
388 | 832 sim_gas_last_used = char_I_current_gas; |
833 | |
834 // Note: if current is first gas, we must find it, but not set | |
835 // last depth change to surface. | |
836 if( char_I_deco_gas_change[sim_gas_last_used-1] ) | |
837 sim_gas_last_depth = char_I_deco_gas_change[sim_gas_last_used-1]; | |
241 | 838 } |
388 | 839 else |
840 sim_gas_last_used = 0; // Gas 6 = manual set | |
241 | 841 } |
842 | |
167 | 843 ////////////////////////////////////////////////////////////////////////////// |
217 | 844 // Find deepest available gas. |
711
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|
845 // |
241 | 846 // Input: temp_depth_limit, |
847 // deco_gas_change[] | |
848 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
212 | 849 // |
241 | 850 // RETURNS TRUE if a stop is needed for gas switch. |
851 // | |
852 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
212 | 853 // |
241 | 854 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
855 // are null), or during the ascent to make sure we are not passing a | |
856 // stop (in which case both can be already set). | |
857 // | |
858 static unsigned char gas_switch_deepest(void) | |
201 | 859 { |
241 | 860 overlay unsigned char switch_deco = 0, switch_last = 0; |
201 | 861 |
862 if (char_I_const_ppO2 == 0) | |
863 { | |
225 | 864 overlay unsigned char j; |
865 | |
241 | 866 // Loop over all enabled gas, to find the deepest one, |
340
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BUGFIX save negativ temperatures in logbook (bbbug #6)
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867 // above last used gas, but below temp_depth_limit. |
338 | 868 for(j=0; j<NUM_GAS; ++j) |
225 | 869 { |
241 | 870 // Gas not (yet) allowed ? Skip ! |
871 if( temp_depth_limit > deco_gas_change[j] ) | |
872 continue; | |
873 | |
353
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874 // Gas deeper (or equal) than the current one ? Skip ! |
241 | 875 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) |
876 continue; | |
877 | |
878 // First, or deeper ? | |
247
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879 if( switch_deco < deco_gas_change[j] ) |
241 | 880 { |
881 switch_deco = deco_gas_change[j]; | |
388 | 882 switch_last = j+1; // 1..5 |
241 | 883 } |
225 | 884 } |
201 | 885 } |
886 | |
203 | 887 // If there is a better gas available |
241 | 888 if( switch_deco ) |
201 | 889 { |
241 | 890 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
201 | 891 |
241 | 892 sim_gas_last_depth = switch_deco; |
893 sim_gas_last_used = switch_last; | |
755 | 894 return 0; |
217 | 895 } |
241 | 896 return 0; |
217 | 897 } |
898 | |
899 ////////////////////////////////////////////////////////////////////////////// | |
900 // Calculate gas switches | |
711
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|
901 // |
217 | 902 // |
903 // Input: N2_ratio, He_ratio. | |
904 // sim_gas_last_used | |
905 // | |
906 // Output: calc_N2_ratio, calc_He_ratio | |
907 // | |
241 | 908 static void gas_switch_set(void) |
217 | 909 { |
564 | 910 assert( sim_gas_last_used <= NUM_GAS ); |
217 | 911 |
388 | 912 if( sim_gas_last_used == 0 ) // Gas6 = manualy set gas. |
224 | 913 { |
914 calc_N2_ratio = N2_ratio; | |
711
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diff
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|
915 calc_He_ratio = He_ratio; |
224 | 916 } |
917 else | |
918 { | |
919 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
711
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diff
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|
920 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; |
217 | 921 } |
201 | 922 |
923 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
924 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
925 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
926 } | |
927 | |
928 ////////////////////////////////////////////////////////////////////////////// | |
929 // | |
212 | 930 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
509 | 931 // temp_deco : simulated respiration pressure |
276 | 932 // float_deco_distance : security factor. |
310
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933 // Water-vapor pressure inside limbs (ppWater). |
212 | 934 // |
236 | 935 // Output: ppN2, ppHe. |
212 | 936 // |
937 static void sim_alveolar_presures(void) | |
201 | 938 { |
212 | 939 overlay float deco_diluent = temp_deco; // new in v.101 |
940 | |
276 | 941 // Take deco offset into account, but not at surface. |
942 // Note: this should be done on ambiant pressure, hence before | |
943 // computing the diluant partial pressure... | |
944 if( deco_diluent > pres_surface ) | |
945 deco_diluent += float_deco_distance; | |
946 | |
212 | 947 //---- CCR mode : deco gas switch ? -------------------------------------- |
276 | 948 if( char_I_const_ppO2 != 0 ) |
711
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949 { |
276 | 950 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
951 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
310
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952 // ppWater in the equations below: |
321 | 953 deco_diluent -= const_ppO2; |
276 | 954 deco_diluent /= calc_N2_ratio + calc_He_ratio; |
212 | 955 |
956 if (deco_diluent > temp_deco) | |
711
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|
957 deco_diluent = temp_deco; |
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958 } |
201 | 959 |
310
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960 if( deco_diluent > ppWater ) |
201 | 961 { |
310
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962 ppN2 = calc_N2_ratio * (deco_diluent - ppWater); |
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963 ppHe = calc_He_ratio * (deco_diluent - ppWater); |
201 | 964 } |
965 else | |
966 { | |
236 | 967 ppN2 = 0.0; |
201 | 968 ppHe = 0.0; |
969 } | |
236 | 970 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
201 | 971 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
972 } | |
973 | |
974 ////////////////////////////////////////////////////////////////////////////// | |
167 | 975 // clear_tissue |
976 // | |
165 | 977 // optimized in v.101 (var_N2_a) |
167 | 978 // |
979 // preload tissues with standard pressure for the given ambient pressure. | |
980 // Note: fixed N2_ratio for standard air. | |
201 | 981 // |
167 | 982 static void clear_tissue(void) |
116 | 983 { |
511
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|
984 overlay float p; |
116 | 985 |
167 | 986 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
987 N2_ratio = 0.7902; | |
212 | 988 pres_respiration = int_I_pres_respiration * 0.001; |
711
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989 |
511
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990 p = N2_ratio * (pres_respiration - ppWater); |
338 | 991 for(ci=0; ci<NUM_COMP; ci++) |
126 | 992 { |
511
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993 // cycle through the 16 Bühlmann N2 tissues |
339 | 994 pres_tissue_N2[ci] = p; |
197 | 995 |
996 // cycle through the 16 Bühlmann tissues for Helium | |
339 | 997 pres_tissue_He[ci] = 0.0; |
511
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998 } |
116 | 999 |
169
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1000 clear_deco_table(); |
126 | 1001 char_O_deco_status = 0; |
1002 char_O_nullzeit = 0; | |
168 | 1003 int_O_ascenttime = 0; |
126 | 1004 char_O_gradient_factor = 0; |
1005 char_O_relative_gradient_GF = 0; | |
258 | 1006 |
1007 calc_lead_tissue_limit = 0.0; | |
1008 char_O_gtissue_no = 0; | |
167 | 1009 } |
116 | 1010 |
167 | 1011 ////////////////////////////////////////////////////////////////////////////// |
1012 // calc_hauptroutine | |
1013 // | |
1014 // this is the major code in dive mode calculates: | |
116 | 1015 // the tissues, |
167 | 1016 // the bottom time, |
1017 // and simulates the ascend with all deco stops. | |
171 | 1018 // |
1019 // The deco_state sequence is : | |
1020 // 3 (at surface) | |
1021 // +---> 0 : calc nullzeit | |
1022 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
1023 // | +-> 1 : simulate up to 16min of stops. | |
1024 // | +------< not finished | |
1025 // +--------< finish | |
1026 // | |
312
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1027 // Added steps 6,5 for @+5 calculation: |
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1028 // 6 = ascent to first stop (same as 2), except continue to 7 |
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1029 // 7 = same as 1, except loop to 7. |
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1030 // |
167 | 1031 static void calc_hauptroutine(void) |
116 | 1032 { |
711
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1033 static unsigned char backup_gas_used = 0; |
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1034 static unsigned char backup_gas_depth = 0; |
186 | 1035 |
711
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1036 calc_hauptroutine_data_input(); |
116 | 1037 |
711
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1038 calc_hauptroutine_update_tissues(); |
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1039 calc_gradient_factor(); |
116 | 1040 |
711
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|
1041 // toggle between calculation for nullzeit (bottom time), |
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|
1042 // deco stops |
167 | 1043 // and more deco stops (continue) |
697 | 1044 switch( char_O_deco_status ) |
711
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1045 { |
186 | 1046 case 3: //---- At surface: start a new dive ------------------------------ |
711
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|
1047 clear_deco_table(); |
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|
1048 copy_deco_table(); |
743 | 1049 int_O_ascenttime = 0; // Reset TTS. |
711
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|
1050 int_O_extra_ascenttime = 0; |
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1051 char_O_nullzeit = 0; // Reset bottom time. |
278 | 1052 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
201 | 1053 |
217 | 1054 // Values that should be reset just once for the full real dive. |
1055 // This is used to record the lowest stop for the whole dive, | |
1056 // Including ACCROSS all simulated ascent. | |
695 | 1057 low_depth = 0.0; |
567 | 1058 locked_GF_step = 0.0; |
217 | 1059 |
1060 // Reset gas switch history. | |
241 | 1061 backup_gas_used = sim_gas_last_used = 0; |
1062 backup_gas_depth = sim_gas_last_depth = 0; | |
203 | 1063 sim_dive_mins = 0; |
1064 break; | |
186 | 1065 |
167 | 1066 case 0: //---- bottom time ----------------------------------------------- |
312
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1067 default: |
509 | 1068 gas_switch_find_current(); // Lookup for current gas & time. |
1069 gas_switch_set(); // setup calc_ratio's | |
1070 | |
711
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JeanDo <jd.gascuel@free.fr>
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|
1071 calc_nullzeit(); |
534
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1072 if( char_O_nullzeit > 0 ) // Some NDL time left ? |
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BUGFIX NDL deco blocking stops during ascent when less than 10' TTS.
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|
1073 { |
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|
1074 char_O_deco_status = 0; // YES: recalc ndl next time. |
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1075 clear_deco_table(); // Also clear stops ! |
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changeset
|
1076 copy_deco_table(); |
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|
1077 char_O_deco_last_stop = 0; // And last stop (OSTC menu anim) |
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|
1078 } |
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|
1079 else |
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|
1080 char_O_deco_status = 2; // NO: calc ascent next time. |
711
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|
1081 break; |
186 | 1082 |
1083 case 2: //---- Simulate ascent to first stop ----------------------------- | |
312
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1084 case 6: // @+5min variation |
203 | 1085 // Check proposed gas at begin of ascent simulation |
247
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|
1086 sim_dive_mins = int_I_divemins; // Init current time. |
241 | 1087 |
711
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|
1088 gas_switch_find_current(); // Lookup for current gas & time. |
532 | 1089 gas_switch_set(); // setup calc_ratio's |
1090 | |
247
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1091 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1092 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
186 | 1093 |
711
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|
1094 sim_ascent_to_first_stop(); |
201 | 1095 |
312
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1096 // Calc stops next time (deco or gas switch). |
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1097 char_O_deco_status = 1 | ( char_O_deco_status & 4 ); |
711
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changeset
|
1098 break; |
169
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|
1099 |
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|
1100 case 1: //---- Simulate stops -------------------------------------------- |
312
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1101 case 5: // @+5 variation. |
711
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diff
changeset
|
1102 calc_hauptroutine_calc_deco(); |
186 | 1103 |
1104 // If simulation is finished, restore the GF low reference, so that | |
1105 // next ascent simulation is done from the current depth: | |
711
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diff
changeset
|
1106 if( (char_O_deco_status & 3) == 0 ) |
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diff
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|
1107 { |
241 | 1108 sim_gas_last_used = backup_gas_used; |
1109 sim_gas_last_depth = backup_gas_depth; | |
186 | 1110 } |
711
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|
1111 break; |
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|
1112 } |
167 | 1113 |
116 | 1114 } |
1115 | |
167 | 1116 ////////////////////////////////////////////////////////////////////////////// |
1117 // calc_hauptroutine_data_input | |
1118 // | |
1119 // Reset all C-code dive parameters from their ASM-code values. | |
1120 // Detect gas change condition. | |
1121 // | |
116 | 1122 void calc_hauptroutine_data_input(void) |
1123 { | |
203 | 1124 overlay short int_temp; |
511
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diff
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|
1125 overlay unsigned char g; |
711
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diff
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|
1126 |
197 | 1127 pres_respiration = int_I_pres_respiration * 0.001; |
1128 pres_surface = int_I_pres_surface * 0.001; | |
1129 N2_ratio = char_I_N2_ratio * 0.01; | |
1130 He_ratio = char_I_He_ratio * 0.01; | |
1131 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
116 | 1132 |
126 | 1133 // ____________________________________________________ |
1134 // | |
1135 // _____________ G A S _ C H A N G E S ________________ | |
1136 // ____________________________________________________ | |
711
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|
1137 |
212 | 1138 // Keep a margin of 150mbar = 1.50m |
1139 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
1140 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
711
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|
1141 |
203 | 1142 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
511
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diff
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|
1143 for(g=0; g < NUM_GAS; ++g) |
126 | 1144 { |
511
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|
1145 deco_gas_change[g] = 0; |
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diff
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|
1146 if(char_I_deco_gas_change[g]) |
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diff
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|
1147 if( int_temp > 100 *(short)char_I_deco_gas_change[g] ) |
711
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changeset
|
1148 deco_gas_change[g] = char_I_deco_gas_change[g]; |
126 | 1149 } |
116 | 1150 |
197 | 1151 const_ppO2 = char_I_const_ppO2 * 0.01; |
1152 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
1153 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
1154 GF_low = char_I_GF_Low_percentage * 0.01; | |
1155 GF_high = char_I_GF_High_percentage * 0.01; | |
126 | 1156 GF_delta = GF_high - GF_low; |
116 | 1157 } |
1158 | |
167 | 1159 ////////////////////////////////////////////////////////////////////////////// |
171 | 1160 // |
1161 // | |
116 | 1162 void calc_hauptroutine_update_tissues(void) |
1163 { | |
197 | 1164 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
1165 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
1166 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
237 | 1167 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
197 | 1168 |
711
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|
1169 pres_diluent = pres_respiration; |
307 | 1170 if( char_I_const_ppO2 != 0 ) // new in v.101 |
186 | 1171 { |
322 | 1172 overlay float flush_ppO2 = pres_respiration * (1.0 - N2_ratio - He_ratio); |
711
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diff
changeset
|
1173 |
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diff
changeset
|
1174 pres_diluent -= const_ppO2; // new in v.101 |
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parents:
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diff
changeset
|
1175 pres_diluent /= N2_ratio + He_ratio; // new in v.101 |
321 | 1176 if( pres_diluent < 0.0 ) |
1177 pres_diluent = 0.0; | |
711
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diff
changeset
|
1178 if( pres_diluent > pres_respiration ) // new in v.101 |
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diff
changeset
|
1179 pres_diluent = pres_respiration; // new in v.101 |
307 | 1180 |
711
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diff
changeset
|
1181 char_O_diluent = (unsigned char)(pres_diluent/pres_respiration*100.0 + 0.5); |
322 | 1182 |
711
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diff
changeset
|
1183 if( flush_ppO2 > 2.545) flush_ppO2 = 2.55; |
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parents:
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diff
changeset
|
1184 if( flush_ppO2 < 0.0 ) flush_ppO2 = 0.0; |
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diff
changeset
|
1185 char_O_flush_ppO2 = (unsigned char)(flush_ppO2*100.0 + 0.5); |
186 | 1186 } |
307 | 1187 |
310
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diff
changeset
|
1188 if( pres_diluent > ppWater ) // new in v.101 |
711
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diff
changeset
|
1189 { |
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diff
changeset
|
1190 overlay float EAD, END; |
307 | 1191 |
310
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|
1192 ppN2 = N2_ratio * (pres_diluent - ppWater); // changed in v.101 |
711
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diff
changeset
|
1193 ppHe = He_ratio * (pres_diluent - ppWater); // changed in v.101 |
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diff
changeset
|
1194 |
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diff
changeset
|
1195 // EAD : Equivalent Air Dive. Equivalent depth for the same N2 level |
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|
1196 // with plain air. |
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diff
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|
1197 // ppN2 = 79% * (P_EAD - ppWater) |
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diff
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|
1198 // EAD = (P_EAD - Psurface) * 10 |
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diff
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|
1199 // ie: EAD = (ppN2 / 0.7902 + ppWater -Psurface) * 10 |
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diff
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|
1200 EAD = (ppN2 / 0.7902 + ppWater - pres_surface) * BAR_TO_METER; |
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parents:
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diff
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|
1201 if( EAD < 0.0 || EAD > 245.5 ) EAD = 0.0; |
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JeanDo <jd.gascuel@free.fr>
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diff
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|
1202 char_O_EAD = (unsigned char)(EAD + 0.5); |
307 | 1203 |
711
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diff
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|
1204 // END : Equivalent Narcotic Dive. |
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diff
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|
1205 // Here we count O2 as narcotic too. Hence everything but helium (has a narcosis factor of |
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diff
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|
1206 // 0.23 btw). Hence the formula becomes: |
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diff
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|
1207 // END * BarPerMeter * (1.0 - 0.0) - ppWater + Psurface == Pambient - ppHe - ppWater |
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|
1208 // ie: END = (Pambient - ppHe - Psurface) * BAR_TO_METER |
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diff
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|
1209 // |
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diff
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|
1210 // Source cited: |
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diff
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|
1211 // The Physiology and Medicine of Diving by Peter Bennett and David Elliott, |
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parents:
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diff
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|
1212 // 4th edition, 1993, W.B.Saunders Company Ltd, London. |
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minor cleanups for CNS/NOAA bugfix.
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diff
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|
1213 END = (pres_respiration - ppHe - pres_surface) * BAR_TO_METER; |
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parents:
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diff
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|
1214 if( END < 0.0 || END > 245.5 ) END = 0.0; |
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parents:
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diff
changeset
|
1215 char_O_END = (unsigned char)(END + 0.5); |
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parents:
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diff
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|
1216 } |
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diff
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|
1217 else // new in v.101 |
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diff
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|
1218 { |
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parents:
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diff
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|
1219 ppN2 = 0.0; // new in v.101 |
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parents:
710
diff
changeset
|
1220 ppHe = 0.0; // new in v.101 |
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diff
changeset
|
1221 char_O_EAD = char_O_END = 0; |
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parents:
710
diff
changeset
|
1222 } |
116 | 1223 |
711
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diff
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|
1224 if(!char_I_step_is_1min) |
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diff
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|
1225 calc_tissue(0); |
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parents:
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diff
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|
1226 else |
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diff
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|
1227 calc_tissue(1); |
186 | 1228 |
192 | 1229 // Calc limit for surface, ie. GF_high. |
258 | 1230 calc_limit(); |
186 | 1231 |
711
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parents:
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|
1232 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
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JeanDo <jd.gascuel@free.fr>
parents:
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diff
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|
1233 int_O_gtissue_press = (short)((pres_tissue_N2[char_O_gtissue_no] + pres_tissue_He[char_O_gtissue_no]) * 1000); |
171 | 1234 } |
1235 | |
116 | 1236 |
167 | 1237 ////////////////////////////////////////////////////////////////////////////// |
169
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1238 // Compute stops. |
711
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|
1239 // |
169
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diff
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1240 // Note: because this can be very long, break on 16 iterations, and set state |
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diff
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|
1241 // to 0 when finished, or to 1 when needing to continue. |
334
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diff
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|
1242 // Note: because each iteration might be very long too (~ 66 ms in 1.84beta), |
257
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Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco()
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diff
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|
1243 // break the loop when total time > 512msec. |
169
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diff
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|
1244 // |
116 | 1245 void calc_hauptroutine_calc_deco(void) |
1246 { | |
169
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diff
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|
1247 overlay unsigned char loop; |
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diff
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|
1248 |
711
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diff
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|
1249 for(loop = 0; loop < 16; ++loop) |
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parents:
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diff
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|
1250 { |
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parents:
710
diff
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|
1251 // Limit loops to 512ms, using the RTC timer 3: |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
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|
1252 if( tmr3() & (512*32) ) |
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parents:
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diff
changeset
|
1253 break; |
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diff
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|
1254 |
755 | 1255 if( calc_nextdecodepth() ) |
757 | 1256 { |
241 | 1257 if( temp_depth_limit == 0 ) |
1258 goto Surface; | |
116 | 1259 |
241 | 1260 //---- We hit a stop at temp_depth_limit --------------------- |
317 | 1261 temp_deco = temp_depth_limit * METER_TO_BAR // Convert to relative bar, |
757 | 1262 + pres_surface; // To absolute. |
471 | 1263 if( !update_deco_table() ) // Adds a one minute stops. |
1264 goto Surface; // Deco table full: abort... | |
241 | 1265 } |
1266 else | |
1267 { | |
1268 //---- No stop ----------------------------------------------- | |
317 | 1269 temp_deco -= (10*METER_TO_BAR); // Ascend 10m, no wait. |
169
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|
1270 |
241 | 1271 //---- Finish computations once surface is reached ----------- |
1272 if( temp_deco <= pres_surface ) | |
1273 { | |
1274 Surface: | |
471 | 1275 if( char_O_deco_status == 1 ) // Don't in @+5min variant. |
711
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parents:
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diff
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|
1276 copy_deco_table(); |
312
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diff
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|
1277 |
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diff
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|
1278 calc_ascenttime(); |
471 | 1279 char_O_deco_status = 0; // calc nullzeit next time. |
1280 char_O_deco_last_stop = 0; // Surface reached (to animate menu) | |
755 | 1281 return; |
241 | 1282 } |
1283 } | |
1284 //---- Then update tissue -------------------------------------------- | |
203 | 1285 sim_dive_mins++; // Advance simulated time by 1 minute. |
241 | 1286 gas_switch_set(); // Apply any simulated gas change, once validated. |
711
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1287 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
192 | 1288 sim_tissue(1); // Simulate compartiments for 1 minute. |
711
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diff
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|
1289 } |
169
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diff
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|
1290 |
711
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parents:
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diff
changeset
|
1291 // Surface not reached, need more stops... for menu animation. |
278 | 1292 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
116 | 1293 } |
1294 | |
167 | 1295 ////////////////////////////////////////////////////////////////////////////// |
169
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diff
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|
1296 // Simulation ascention to first deco stop. |
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diff
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|
1297 // |
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diff
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|
1298 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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diff
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|
1299 // there is no need to break on more that 16 iterations |
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diff
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|
1300 // (or we are already in deep shit). |
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diff
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|
1301 // |
334
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326
diff
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|
1302 // Input: pres_respiration |
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BUGFIX minor error in gas-switch algo (spurious surface decostop rarely added).
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diff
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|
1303 // Output: temp_deco |
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BUGFIX minor error in gas-switch algo (spurious surface decostop rarely added).
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diff
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|
1304 // |
312
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diff
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|
1305 // if char_O_deco_status indicate @+5 variant, add extra time at current depth, |
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diff
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|
1306 // before ascent. |
169
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|
1307 void sim_ascent_to_first_stop(void) |
116 | 1308 { |
698 | 1309 overlay unsigned char fast = 1; // 1min or 2sec steps. |
1310 | |
171 | 1311 update_startvalues(); |
169
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diff
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|
1312 clear_deco_table(); |
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|
1313 |
711
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diff
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|
1314 temp_deco = pres_respiration; // Starts from current real depth. |
169
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diff
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|
1315 |
312
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diff
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|
1316 // Are we doing the special @+5min variation ? |
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|
1317 if(char_O_deco_status & 4) |
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|
1318 sim_extra_time(); |
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|
1319 |
241 | 1320 //---- Loop until first stop, gas switch, or surface is reached ---------- |
711
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|
1321 for(;;) |
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diff
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|
1322 { |
461 | 1323 overlay float old_deco = temp_deco; // Pamb backup (bars) |
460 | 1324 |
698 | 1325 // Try ascending 1 full minute (fast) or 2sec (!fast): |
1326 if( fast ) | |
1327 temp_deco -= 10*METER_TO_BAR; // 1 min, at 10m/min. ~ 1bar. | |
1328 else | |
1329 temp_deco -= (10.0/30.0)*METER_TO_BAR; // 2sec at 10m/min. | |
1330 | |
461 | 1331 if( temp_deco < pres_surface ) // But don't go over surface. |
1332 temp_deco = pres_surface; | |
203 | 1333 |
461 | 1334 // Recompute sim_lead_tissue_limit at GF_low (deepest stop), because |
1335 // one minute passed. | |
212 | 1336 sim_limit(GF_low); |
1337 | |
1338 // Did we reach deepest remaining stop ? | |
241 | 1339 if( temp_deco < sim_lead_tissue_limit ) |
212 | 1340 { |
461 | 1341 temp_deco = old_deco; // Restore last correct depth, |
698 | 1342 |
1343 if( fast ) | |
1344 { | |
1345 fast = 0; // Retry with 2sec steps. | |
1346 continue; | |
1347 } | |
1348 else | |
1349 break; // Done... | |
212 | 1350 } |
1351 | |
203 | 1352 // Did we reach surface ? |
460 | 1353 // NOTE: we should round BEFORE checking surface is reached. |
461 | 1354 temp_depth_limit = (unsigned char)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
1355 if( temp_depth_limit == 0 ) | |
203 | 1356 { |
1357 temp_deco = pres_surface; // Yes: finished ! | |
1358 break; | |
1359 } | |
169
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1360 |
241 | 1361 // Check for gas change below new depth ? |
1362 if( gas_switch_deepest() ) | |
1363 { | |
334
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|
1364 assert( temp_depth_limit > 0); |
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|
1365 |
317 | 1366 temp_deco = temp_depth_limit * METER_TO_BAR + pres_surface; |
212 | 1367 break; |
241 | 1368 } |
171 | 1369 |
698 | 1370 if( fast ) |
1371 sim_dive_mins++; // Advance simulated time by 1 minute. | |
241 | 1372 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
698 | 1373 sim_tissue(fast); // and update tissues for 1 min. |
711
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|
1374 } |
167 | 1375 } |
116 | 1376 |
167 | 1377 ////////////////////////////////////////////////////////////////////////////// |
312
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|
1378 // Simulation extra time at the current depth. |
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1379 // |
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1380 // This routine is used for @+5min feature. |
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1381 void sim_extra_time(void) |
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1382 { |
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|
1383 overlay unsigned char extra = read_custom_function(58); |
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1384 do { |
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|
1385 sim_dive_mins++; // Advance simulated time by 1 minute. |
711
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|
1386 sim_tissue(1); // and update tissues for 1 min. |
312
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1387 } while( --extra != 0 ); |
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|
1388 } |
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1389 |
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|
1390 ////////////////////////////////////////////////////////////////////////////// |
167 | 1391 // calc_tissue |
1392 // | |
116 | 1393 // optimized in v.101 |
167 | 1394 // |
184 | 1395 static void calc_tissue(PARAMETER unsigned char period) |
116 | 1396 { |
251 | 1397 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
1398 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
236 | 1399 |
338 | 1400 for (ci=0;ci<NUM_COMP;ci++) |
126 | 1401 { |
258 | 1402 read_buhlmann_times(period); // 2 sec or 1 min period. |
116 | 1403 |
126 | 1404 // N2 |
339 | 1405 temp_tissue = (ppN2 - pres_tissue_N2[ci]) * var_N2_e; |
126 | 1406 temp_tissue_safety(); |
339 | 1407 pres_tissue_N2[ci] += temp_tissue; |
165 | 1408 |
126 | 1409 // He |
339 | 1410 temp_tissue = (ppHe - pres_tissue_He[ci]) * var_He_e; |
126 | 1411 temp_tissue_safety(); |
339 | 1412 pres_tissue_He[ci] += temp_tissue; |
192 | 1413 } |
167 | 1414 } |
116 | 1415 |
167 | 1416 ////////////////////////////////////////////////////////////////////////////// |
192 | 1417 // calc_limit |
167 | 1418 // |
192 | 1419 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
167 | 1420 // |
258 | 1421 static void calc_limit(void) |
167 | 1422 { |
192 | 1423 char_O_gtissue_no = 255; |
1424 calc_lead_tissue_limit = 0.0; | |
1425 | |
338 | 1426 for(ci=0; ci<NUM_COMP;ci++) |
192 | 1427 { |
339 | 1428 overlay float N2 = pres_tissue_N2[ci]; |
1429 overlay float He = pres_tissue_He[ci]; | |
293
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1430 overlay float p = N2 + He; |
192 | 1431 |
258 | 1432 read_buhlmann_coefficients(); |
293
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1433 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1434 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
116 | 1435 |
192 | 1436 // Apply the Eric Baker's varying gradient factor correction. |
1437 // Note: the correction factor depends both on GF and b, | |
1438 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1439 // so that can change who is the leading gas... | |
1440 // Note: Also depends of the GF. So the calcul is different for | |
1441 // GF_low, current GF, or GF_high... | |
1442 // *BUT* calc_tissue() is used to compute bottom time, | |
1443 // hence what would happend at surface, | |
1444 // hence at GF_high. | |
509 | 1445 if( char_I_deco_model != 0 ) |
258 | 1446 p = ( p - var_N2_a * GF_high) * var_N2_b |
1447 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
192 | 1448 else |
1449 p = (p - var_N2_a) * var_N2_b; | |
258 | 1450 if( p < 0.0 ) p = 0.0; |
192 | 1451 |
1452 if( p > calc_lead_tissue_limit ) | |
1453 { | |
1454 char_O_gtissue_no = ci; | |
1455 calc_lead_tissue_limit = p; | |
1456 } | |
1457 } | |
197 | 1458 |
338 | 1459 assert( char_O_gtissue_no < NUM_COMP ); |
197 | 1460 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); |
167 | 1461 } |
1462 | |
1463 ////////////////////////////////////////////////////////////////////////////// | |
1464 // calc_nullzeit | |
1465 // | |
1466 // calculates the remaining bottom time | |
1467 // | |
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1468 // NOTE: Erik Baker's closed formula works for Nitroxes. Trimix adds a second |
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1469 // exponential term to the M-value equation, making it impossible to |
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1470 // invert... So we have to make a fast-simu until we find a better way. |
509 | 1471 // |
1472 // Input: pres_respiration | |
1473 // Output: char_O_nullzeit | |
167 | 1474 // |
1475 static void calc_nullzeit(void) | |
1476 { | |
511
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1477 //---- Compute ppN2 and ppHe --------------------------------------------- |
509 | 1478 temp_deco = pres_respiration; |
1479 sim_alveolar_presures(); | |
167 | 1480 |
509 | 1481 char_O_nullzeit = 240; |
1482 for(ci=0; ci<NUM_COMP; ci++) | |
1483 { | |
511
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1484 //---- Read A/B values and loading factor for N2 and He -------------- |
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1485 overlay float tN2 = pres_tissue_N2[ci]; |
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1486 overlay float tHe = pres_tissue_He[ci]; |
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1487 overlay float t = tN2 + tHe; |
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1488 overlay unsigned char ndl; |
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1489 overlay unsigned char period = 10; |
192 | 1490 |
509 | 1491 read_buhlmann_coefficients(); |
511
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1492 read_buhlmann_times(2); // Starts with a 10min period. |
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1493 |
511
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1494 //---- Simulate for that tissue -------------------------------------- |
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1495 // NOTE: No need to simulate for longuer than the already found NDL. |
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1496 for(ndl=0; ndl<char_O_nullzeit;) |
509 | 1497 { |
511
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1498 //---- Compute updated mix M-value at surface |
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1499 overlay float a = (var_N2_a * tN2 + var_He_a * tHe) / t; |
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1500 overlay float b = (var_N2_b * tN2 + var_He_b * tHe) / t; |
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1501 overlay float M0 = (a + pres_surface/b); |
116 | 1502 |
511
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1503 //---- Add 10min/1min to N2/He tissues |
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1504 overlay float dTN2 = (ppN2 - tN2) * var_N2_e; |
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1505 overlay float dTHe = (ppHe - tHe) * var_He_e; |
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1506 |
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1507 //---- Apply security margin when using the non-GF model |
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1508 if( char_I_deco_model == 0 ) |
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1509 { |
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1510 dTN2 *= float_saturation_multiplier; |
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1511 dTHe *= float_saturation_multiplier; |
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1512 } |
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1513 else // Or GF-based model |
509 | 1514 M0 = GF_high * (M0 - pres_surface) + pres_surface; |
167 | 1515 |
511
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1516 //---- Simulate off-gasing while going to surface |
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1517 // TODO ! |
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1518 // dTN2 -= exp( ... ascent time ... ppN2...) |
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1519 // dTHe -= exp( ... ascent time ... ppHe...) |
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1520 |
534
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1521 //---- Ok now, and still ok to surface after 1 or 10 minutes ? |
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1522 if( (t <= M0) && (t + dTN2 + dTHe <= M0) ) |
509 | 1523 { |
511
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1524 tN2 += dTN2; // YES: apply gas loadings, |
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1525 tHe += dTHe; |
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1526 t = tN2 + tHe; |
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1527 ndl += period; // increment NDL, |
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1528 continue; // and loop. |
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1529 } |
116 | 1530 |
511
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1531 //---- Should we retry with smaller steps ? |
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1532 if( period == 10 ) |
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1533 { |
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1534 read_buhlmann_times(1); // 1min coefs. |
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1535 period = 1; |
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1536 continue; |
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1537 } |
167 | 1538 |
511
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1539 //---- ELSE make a linear approx for the last minute |
524 | 1540 // Usefull to have a meaningfull rounding of NDL. |
1541 // But ONLY it positive (negativ casted to unsigned is bad). | |
1542 if( M0 > t ) | |
1543 ndl += (unsigned char)(0.5f + (M0-t)/(dTN2+dTHe)); | |
511
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1544 break; |
509 | 1545 } |
511
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1546 |
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1547 // Keep the shortest NDL found |
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1548 if( ndl < char_O_nullzeit ) |
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1549 char_O_nullzeit = ndl; |
339 | 1550 } |
167 | 1551 } |
116 | 1552 |
167 | 1553 ////////////////////////////////////////////////////////////////////////////// |
1554 // calc_ascenttime | |
1555 // | |
312
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1556 // Summup ascent from bottom to surface, at 1 bar/min, 1min for last 3 meters, |
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1557 // and all stops. |
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1558 // |
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1559 // Result in int_O_ascenttime, or int_O_extra_ascenttime if in @+5min variant. |
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1560 static void calc_ascenttime(void) |
116 | 1561 { |
323 | 1562 overlay unsigned char x; |
1563 overlay unsigned short sum; | |
168 | 1564 |
323 | 1565 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
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1566 overlay float ascent = pres_respiration - pres_surface + 0.7; |
323 | 1567 if (ascent < 0.0) |
1568 ascent = 0.0; | |
1569 sum = (unsigned short)(ascent + 0.99); | |
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1570 |
338 | 1571 for(x=0; x<NUM_STOPS && internal_deco_depth[x]; x++) |
323 | 1572 sum += (unsigned short)internal_deco_time[x]; |
1573 | |
1574 if( char_O_deco_status == 1 ) | |
1575 int_O_ascenttime = sum; | |
126 | 1576 else |
323 | 1577 int_O_extra_ascenttime = sum; |
167 | 1578 } |
116 | 1579 |
167 | 1580 ////////////////////////////////////////////////////////////////////////////// |
1581 // update_startvalues | |
1582 // | |
116 | 1583 // updated in v.102 |
167 | 1584 // |
116 | 1585 void update_startvalues(void) |
1586 { | |
167 | 1587 overlay unsigned char x; |
116 | 1588 |
201 | 1589 // Start ascent simulation with current tissue partial pressures. |
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1590 for(x=0; x<NUM_COMP; x++) |
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1591 { |
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1592 sim_pres_tissue_N2[x] = pres_tissue_N2[x]; |
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1593 sim_pres_tissue_He[x] = pres_tissue_He[x]; |
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1594 } |
197 | 1595 |
201 | 1596 // No leading tissue (yet) for this ascent simulation. |
197 | 1597 sim_lead_tissue_limit = 0.0; |
1598 sim_lead_tissue_no = 255; | |
167 | 1599 } |
116 | 1600 |
167 | 1601 ////////////////////////////////////////////////////////////////////////////// |
192 | 1602 // sim_tissue |
167 | 1603 // |
116 | 1604 // optimized in v.101 |
167 | 1605 // |
1606 // Function very simular to calc_tissue, but: | |
1607 // + Use a 1min or 10min period. | |
1608 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
184 | 1609 static void sim_tissue(PARAMETER unsigned char period) |
116 | 1610 { |
251 | 1611 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
1612 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
236 | 1613 |
338 | 1614 for(ci=0; ci<NUM_COMP; ci++) |
126 | 1615 { |
258 | 1616 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
165 | 1617 |
126 | 1618 // N2 |
339 | 1619 temp_tissue = (ppN2 - sim_pres_tissue_N2[ci]) * var_N2_e; |
126 | 1620 temp_tissue_safety(); |
339 | 1621 sim_pres_tissue_N2[ci] += temp_tissue; |
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1622 |
126 | 1623 // He |
339 | 1624 temp_tissue = (ppHe - sim_pres_tissue_He[ci]) * var_He_e; |
126 | 1625 temp_tissue_safety(); |
339 | 1626 sim_pres_tissue_He[ci] += temp_tissue; |
192 | 1627 } |
167 | 1628 } |
116 | 1629 |
167 | 1630 ////////////////////////////////////////////////////////////////////////////// |
192 | 1631 // sim_limit() |
1632 // | |
1633 // New in v.111 | |
1634 // | |
1635 // Function separated from sim_tissue() to allow recomputing limit on | |
1636 // different depth, because it depends on current gradient factor. | |
167 | 1637 // |
192 | 1638 static void sim_limit(PARAMETER float GF_current) |
116 | 1639 { |
212 | 1640 assert( 0.0 < GF_current && GF_current <= 1.0f); |
1641 | |
192 | 1642 sim_lead_tissue_limit = 0.0; |
212 | 1643 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
192 | 1644 |
338 | 1645 for(ci=0; ci<NUM_COMP; ci++) |
192 | 1646 { |
339 | 1647 overlay float N2 = sim_pres_tissue_N2[ci]; |
1648 overlay float He = sim_pres_tissue_He[ci]; | |
241 | 1649 overlay float p = N2 + He; |
192 | 1650 |
258 | 1651 read_buhlmann_coefficients(); |
241 | 1652 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
1653 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
192 | 1654 |
1655 // Apply the Eric Baker's varying gradient factor correction. | |
1656 // Note: the correction factor depends both on GF and b, | |
1657 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1658 // so that can change who is the leading gas... | |
1659 // Note: Also depends of the GF_current... | |
509 | 1660 if( char_I_deco_model != 0 ) |
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1661 p = ( p - var_N2_a * GF_current) |
302 | 1662 / (GF_current / var_N2_b + 1.0 - GF_current); |
192 | 1663 else |
1664 p = (p - var_N2_a) * var_N2_b; | |
1665 | |
1666 if( p > sim_lead_tissue_limit ) | |
1667 { | |
1668 sim_lead_tissue_no = ci; | |
1669 sim_lead_tissue_limit = p; | |
1670 } | |
1671 } // for ci | |
197 | 1672 |
338 | 1673 assert( sim_lead_tissue_no < NUM_COMP ); |
237 | 1674 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
167 | 1675 } |
116 | 1676 |
167 | 1677 ////////////////////////////////////////////////////////////////////////////// |
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1678 // clear_deco_table |
167 | 1679 // |
1680 // unchanged in v.101 | |
1681 // | |
169
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1682 static void clear_deco_table(void) |
116 | 1683 { |
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|
1684 overlay unsigned char x; |
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1685 |
338 | 1686 for(x=0; x<NUM_STOPS; ++x) |
169
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1687 { |
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Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1688 internal_deco_time [x] = 0; |
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1689 internal_deco_depth[x] = 0; |
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1690 } |
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1691 } |
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1692 |
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Merge decoplan display for both GF and Buhlmann models.
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parents:
168
diff
changeset
|
1693 ////////////////////////////////////////////////////////////////////////////// |
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Merge decoplan display for both GF and Buhlmann models.
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parents:
168
diff
changeset
|
1694 // update_deco_table |
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Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1695 // |
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Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1696 // Add 1 min to current stop. |
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1697 // |
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Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1698 // Inputs: |
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1699 // temp_depth_limit = stop's depth, in meters. |
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1700 // In/Out: |
275
4310ab395dbe
Keep low_depth in float 32bits (w/o rounding) for a better stability.
JeanDo
parents:
270
diff
changeset
|
1701 // internal_deco_depth[] : depth (in metres) of each stops. |
169
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1702 // internal_deco_time [] : time (in minutes) of each stops. |
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
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parents:
168
diff
changeset
|
1703 // |
471 | 1704 static unsigned char update_deco_table() |
169
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1705 { |
192 | 1706 overlay unsigned char x; |
247
ce869aad7440
BUGFIX Count gas switch delay down during ascent (bug bb26)
JeanDo
parents:
241
diff
changeset
|
1707 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
ce869aad7440
BUGFIX Count gas switch delay down during ascent (bug bb26)
JeanDo
parents:
241
diff
changeset
|
1708 assert( temp_depth_limit > 0 ); // No stop at surface... |
169
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
JeanDo
parents:
168
diff
changeset
|
1709 |
338 | 1710 for(x=0; x<NUM_STOPS; ++x) |
192 | 1711 { |
212 | 1712 // Make sure deco-stops are recorded in order: |
334
4ccdc72ec0e5
BUGFIX minor error in gas-switch algo (spurious surface decostop rarely added).
JeanDo
parents:
326
diff
changeset
|
1713 assert( !internal_deco_depth[x] || temp_depth_limit <= (internal_deco_depth[x]& 0x7F) ); |
212 | 1714 |
279
8514588eb6a2
Mark gas-switch stops for decoplans, displayed in yellow.
JeanDo
parents:
278
diff
changeset
|
1715 if( (internal_deco_depth[x] & 0x7F) == temp_depth_limit ) |
192 | 1716 { |
1717 // Do not overflow (max 255') | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1718 if( internal_deco_time[x] < 255 ) |
192 | 1719 { |
1720 internal_deco_time[x]++; | |
471 | 1721 return 1; |
192 | 1722 } |
1723 // But store extra in the next stop... | |
169
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Merge decoplan display for both GF and Buhlmann models.
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parents:
168
diff
changeset
|
1724 } |
192 | 1725 |
169
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JeanDo
parents:
168
diff
changeset
|
1726 if( internal_deco_depth[x] == 0 ) |
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parents:
168
diff
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|
1727 { |
192 | 1728 internal_deco_depth[x] = temp_depth_limit; |
279
8514588eb6a2
Mark gas-switch stops for decoplans, displayed in yellow.
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parents:
278
diff
changeset
|
1729 |
169
e26f49674956
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parents:
168
diff
changeset
|
1730 internal_deco_time[x] = 1; |
757 | 1731 internal_deco_gas[x] = sim_gas_last_used; |
471 | 1732 return 1; |
169
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parents:
168
diff
changeset
|
1733 } |
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parents:
168
diff
changeset
|
1734 } |
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parents:
168
diff
changeset
|
1735 |
192 | 1736 // Can't store stops at more than 96m. |
1737 // Or stops at less that 3m too. | |
169
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Merge decoplan display for both GF and Buhlmann models.
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parents:
168
diff
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|
1738 // Just do nothing with that... |
471 | 1739 return 0; |
167 | 1740 } |
116 | 1741 |
167 | 1742 ////////////////////////////////////////////////////////////////////////////// |
1743 // calc_gradient_factor | |
1744 // | |
165 | 1745 // optimized in v.101 (var_N2_a) |
116 | 1746 // new code in v.102 |
167 | 1747 // |
1748 static void calc_gradient_factor(void) | |
116 | 1749 { |
197 | 1750 overlay float gf; |
339 | 1751 overlay float N2 = pres_tissue_N2[char_O_gtissue_no]; |
1752 overlay float He = pres_tissue_He[char_O_gtissue_no]; | |
237 | 1753 |
338 | 1754 assert( char_O_gtissue_no < NUM_COMP ); |
237 | 1755 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
197 | 1756 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1757 // tissue > respiration (currently off-gasing) |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1758 // GF = 0% when respiration == tissue, ie. bubbles are at equilibrium. |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1759 // GF = 100% when respiration == limit. |
293
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1760 temp_tissue = N2 + He; |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1761 if( temp_tissue <= pres_respiration ) |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1762 gf = 0.0; |
197 | 1763 else |
1764 { | |
293
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1765 overlay float limit = calc_lead_tissue_limit; |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1766 // NOTE: in GF model, calc_lead_tissue_limit include already the |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1767 // correction due to gradient factor. To compute the actual |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1768 // current GF, we need to (re-)compute the raw ambiant-pressure |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1769 // limit from the Bühlmann model. |
509 | 1770 if( char_I_deco_model != 0 ) |
293
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1771 { |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1772 ci = char_O_gtissue_no; |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1773 read_buhlmann_coefficients(); |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1774 var_N2_a = (var_N2_a * N2 + var_He_a * He) / temp_tissue; |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1775 var_N2_b = (var_N2_b * N2 + var_He_b * He) / temp_tissue; |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1776 limit = (temp_tissue - var_N2_a) * var_N2_b; |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1777 } |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1778 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1779 gf = (temp_tissue - pres_respiration) |
293
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1780 / (temp_tissue - limit) |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1781 * 100.0; |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1782 if( gf > 254.5 ) gf = 255.0; |
197 | 1783 if( gf < 0.0 ) gf = 0.0; |
1784 } | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1785 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
116 | 1786 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1787 if( char_I_deco_model != 0 ) // calculate relative gradient factor |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1788 { |
197 | 1789 overlay float rgf; |
1790 | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1791 if( low_depth < 3 ) |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1792 rgf = GF_high; |
197 | 1793 else |
1794 { | |
317 | 1795 overlay float temp1 = low_depth * METER_TO_BAR; |
197 | 1796 overlay float temp2 = pres_respiration - pres_surface; |
186 | 1797 |
197 | 1798 if (temp2 <= 0) |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1799 rgf = GF_high; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1800 else if (temp2 >= temp1) |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1801 rgf = GF_low; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1802 else |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1803 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; |
197 | 1804 } |
186 | 1805 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1806 rgf = gf / rgf; // gf is already in percent |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1807 if( rgf < 0.0 ) rgf = 0.0; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1808 if( rgf > 254.5 ) rgf = 255.0; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1809 char_O_relative_gradient_GF = (unsigned char)(rgf+0.5f); |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1810 } // calc relative gradient factor |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1811 else |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1812 { |
186 | 1813 char_O_relative_gradient_GF = char_O_gradient_factor; |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1814 } |
167 | 1815 } |
116 | 1816 |
167 | 1817 ////////////////////////////////////////////////////////////////////////////// |
1818 // deco_calc_desaturation_time | |
1819 // | |
116 | 1820 // FIXED N2_ratio |
1821 // unchanged in v.101 | |
310
b20fc8c4ac92
Fix EAD/END display (not mm, m with a trailling space)
JeanDo
parents:
307
diff
changeset
|
1822 // Inputs: int_I_pres_surface, ppWater, char_I_desaturation_multiplier |
233 | 1823 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] |
167 | 1824 // |
116 | 1825 void deco_calc_desaturation_time(void) |
1826 { | |
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
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parents:
116
diff
changeset
|
1827 RESET_C_STACK |
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
JeanDo
parents:
116
diff
changeset
|
1828 |
233 | 1829 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
1830 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
1831 | |
237 | 1832 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
233 | 1833 pres_surface = int_I_pres_surface * 0.001; |
310
b20fc8c4ac92
Fix EAD/END display (not mm, m with a trailling space)
JeanDo
parents:
307
diff
changeset
|
1834 ppN2 = N2_ratio * (pres_surface - ppWater); |
126 | 1835 int_O_desaturation_time = 0; |
491
560764da0629
BUGFIX Surface desat factor missing for Interval planning in GF mode.
JeanDo
parents:
490
diff
changeset
|
1836 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
233 | 1837 |
339 | 1838 for(ci=0; ci<NUM_COMP; ci++) |
126 | 1839 { |
251 | 1840 overlay unsigned short desat_time; // For a particular compartiment, in min. |
1841 overlay float temp1; | |
1842 overlay float temp2; | |
1843 overlay float temp3; | |
1844 overlay float temp4; | |
338 | 1845 |
509 | 1846 read_buhlmann_ht(); |
338 | 1847 |
126 | 1848 // saturation_time (for flight) and N2_saturation in multiples of halftime |
1849 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
1850 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
260
bde83cac971f
BUGFIX bb13 : deco_calc_desaturation_time() should reset TBLPTR Upper register.
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parents:
258
diff
changeset
|
1851 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
126 | 1852 // N2 |
339 | 1853 temp1 = 1.05 * ppN2 - pres_tissue_N2[ci]; |
1854 temp2 = ppN2 - pres_tissue_N2[ci]; | |
126 | 1855 if (temp2 >= 0.0) |
233 | 1856 temp1 = 0.0; |
126 | 1857 else |
1858 temp1 = temp1 / temp2; | |
711
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1859 |
251 | 1860 if( 0.0 < temp1 && temp1 < 1.0 ) |
126 | 1861 { |
260
bde83cac971f
BUGFIX bb13 : deco_calc_desaturation_time() should reset TBLPTR Upper register.
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parents:
258
diff
changeset
|
1862 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
bde83cac971f
BUGFIX bb13 : deco_calc_desaturation_time() should reset TBLPTR Upper register.
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parents:
258
diff
changeset
|
1863 // minus because log is negative. |
bde83cac971f
BUGFIX bb13 : deco_calc_desaturation_time() should reset TBLPTR Upper register.
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parents:
258
diff
changeset
|
1864 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
509 | 1865 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 |
260
bde83cac971f
BUGFIX bb13 : deco_calc_desaturation_time() should reset TBLPTR Upper register.
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parents:
258
diff
changeset
|
1866 |
126 | 1867 } |
1868 else | |
1869 { | |
233 | 1870 temp1 = 0.0; |
1871 temp2 = 0.0; | |
126 | 1872 } |
116 | 1873 |
126 | 1874 // He |
339 | 1875 temp3 = 0.1 - pres_tissue_He[ci]; |
126 | 1876 if (temp3 >= 0.0) |
233 | 1877 temp3 = 0.0; |
126 | 1878 else |
339 | 1879 temp3 = - temp3 / pres_tissue_He[ci]; |
601
d1719622111e
Minor LLVM compatibility cleanups.
JeanDo <jd.gascuel@free.fr>
parents:
581
diff
changeset
|
1880 |
251 | 1881 if( 0.0 < temp3 && temp3 < 1.0 ) |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
1882 { |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1883 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1884 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1885 // minus because log is negative |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1886 temp4 = var_He_ht * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1887 } |
126 | 1888 else |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1889 { |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1890 temp3 = 0.0; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1891 temp4 = 0.0; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1892 } |
116 | 1893 |
126 | 1894 // saturation_time (for flight) |
1895 if (temp4 > temp2) | |
203 | 1896 desat_time = (unsigned short)temp4; |
126 | 1897 else |
203 | 1898 desat_time = (unsigned short)temp2; |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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1899 |
251 | 1900 if(desat_time > int_O_desaturation_time) |
1901 int_O_desaturation_time = desat_time; | |
116 | 1902 |
126 | 1903 // N2 saturation in multiples of halftime for display purposes |
339 | 1904 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
1905 temp2 = temp2 + 80.0; // set center | |
126 | 1906 if (temp2 < 0.0) |
1907 temp2 = 0.0; | |
1908 if (temp2 > 255.0) | |
1909 temp2 = 255.0; | |
339 | 1910 char_O_tissue_N2_saturation[ci] = (char)temp2; |
233 | 1911 |
126 | 1912 // He saturation in multiples of halftime for display purposes |
339 | 1913 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
1914 temp4 = temp4 + 80.0; // set center | |
126 | 1915 if (temp4 < 0.0) |
1916 temp4 = 0.0; | |
1917 if (temp4 > 255.0) | |
1918 temp4 = 255.0; | |
339 | 1919 char_O_tissue_He_saturation[ci] = (char)temp4; |
126 | 1920 } // for |
167 | 1921 } |
116 | 1922 |
167 | 1923 ////////////////////////////////////////////////////////////////////////////// |
1924 // calc_wo_deco_step_1_min | |
1925 // | |
116 | 1926 // FIXED N2 Ratio |
1927 // optimized in v.101 (...saturation_multiplier) | |
1928 // desaturation slowed down to 70,42% | |
167 | 1929 // |
1930 static void calc_wo_deco_step_1_min(void) | |
116 | 1931 { |
251 | 1932 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
1933 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
1934 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
1935 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
1936 | |
126 | 1937 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
368 | 1938 pres_respiration = pres_surface = int_I_pres_surface * 0.001; |
1939 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
200 | 1940 ppHe = 0.0; |
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1941 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
197 | 1942 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
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1943 |
339 | 1944 calc_tissue(1); // update the pressure in the tissues N2/He in accordance with the new ambient pressure |
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1945 |
169
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1946 clear_deco_table(); |
200 | 1947 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
126 | 1948 char_O_nullzeit = 0; |
168 | 1949 int_O_ascenttime = 0; |
323 | 1950 int_O_extra_ascenttime = 0; |
126 | 1951 calc_gradient_factor(); |
167 | 1952 } |
126 | 1953 |
167 | 1954 ////////////////////////////////////////////////////////////////////////////// |
368 | 1955 // calc_dive_interval |
1956 // | |
1957 // Prepare tissue for delay before the next dive simulation. | |
1958 // | |
1959 // Inputs: char_I_dive_interval == delay before dive (in 10' steps). | |
1960 // Outputs: pres_tissue_N2/He[], CNS_fraction | |
1961 // | |
1962 // Should be protected by deco_push_tissues_to_vault(), | |
1963 // deco_pull_tissues_from_vault() | |
1964 // | |
1965 // desaturation slowed down to 70,42%. | |
1966 // | |
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1967 static void calc_dive_interval(void) |
368 | 1968 { |
1969 overlay unsigned char t; | |
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1970 overlay unsigned char backup_model; |
368 | 1971 |
1972 //---- Initialize simulation parameters ---------------------------------- | |
1973 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann | |
1974 pres_respiration = pres_surface = int_I_pres_surface * 0.001; | |
1975 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
1976 ppHe = 0.0; | |
491
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1977 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
368 | 1978 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
1979 | |
568 | 1980 // Make sure SURFACE_DESAT_FACTOR is applied: |
491
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1981 backup_model = char_I_deco_model; |
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1982 char_I_deco_model = 0; |
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1983 |
368 | 1984 //---- Perform simulation ------------------------------------------------ |
1985 for(t=0; t<char_I_dive_interval; ++t) | |
1986 { | |
1987 calc_tissue(2); // period = 10min. | |
1988 CNS_fraction = 0.92587471 * CNS_fraction; // Half-time = 90min: (1/2)^(1/9) | |
1989 } | |
514 | 1990 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
1991 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); | |
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1992 |
491
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1993 //---- Restore model ----------------------------------------------------- |
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1994 char_I_deco_model = backup_model; |
368 | 1995 } |
1996 | |
1997 ////////////////////////////////////////////////////////////////////////////// | |
167 | 1998 ////////////////////////////////////////////////////////////////////////////// |
1999 ////////////////////////////////// deco_hash ///////////////////////////////// | |
2000 ////////////////////////////////////////////////////////////////////////////// | |
2001 ////////////////////////////////////////////////////////////////////////////// | |
126 | 2002 |
184 | 2003 #ifndef CROSS_COMPILE |
116 | 2004 void deco_hash(void) |
2005 { | |
167 | 2006 overlay unsigned char md_i, md_j; // Loop index. |
2007 overlay unsigned char md_t; | |
2008 overlay unsigned char md_buffer[16]; | |
2009 overlay unsigned char md_temp; | |
203 | 2010 overlay unsigned short md_pointer; |
167 | 2011 |
122
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2012 RESET_C_STACK |
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2013 |
126 | 2014 // init |
164 | 2015 for(md_i=0;md_i<16;md_i++) |
126 | 2016 { |
2017 md_state[md_i] = 0; | |
164 | 2018 char_O_hash[md_i] = 0; |
126 | 2019 } // for md_i 16 |
116 | 2020 |
126 | 2021 _asm |
167 | 2022 movlw 0x01 // md_pi address. |
2023 movwf TBLPTRU,0 | |
2024 movlw 0x7E | |
2025 movwf TBLPTRH,0 | |
2026 movlw 0x00 | |
2027 movwf TBLPTRL,0 | |
126 | 2028 _endasm; |
165 | 2029 md_i = 0; |
2030 do { | |
126 | 2031 _asm |
2032 TBLRDPOSTINC | |
2033 movff TABLAT,md_temp | |
2034 _endasm | |
165 | 2035 md_pi_subst[md_i++] = md_temp; |
2036 } while( md_i != 0 ); | |
2037 | |
126 | 2038 _asm |
167 | 2039 movlw 0x00 |
2040 movwf TBLPTRU,0 | |
2041 movlw 0x00 | |
2042 movwf TBLPTRH,0 | |
2043 movlw 0x00 | |
2044 movwf TBLPTRL,0 | |
126 | 2045 _endasm |
167 | 2046 |
126 | 2047 // cycle buffers |
2048 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
2049 { | |
2050 md_t = 0; | |
2051 for (md_i=0;md_i<16;md_i++) | |
2052 { | |
2053 if(md_pointer == 9) | |
164 | 2054 md_temp = char_O_hash[md_i]; |
126 | 2055 else |
2056 { | |
2057 _asm | |
167 | 2058 TBLRDPOSTINC |
2059 movff TABLAT,md_temp | |
126 | 2060 _endasm |
2061 } // else | |
167 | 2062 |
2063 md_buffer[md_i] = md_temp; | |
186 | 2064 md_state[md_i+16] = md_temp; |
2065 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
126 | 2066 } // for md_i 16 |
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|
2067 |
126 | 2068 for (md_i=0;md_i<18;md_i++) |
2069 { | |
2070 for (md_j=0;md_j<48;md_j++) | |
2071 { | |
167 | 2072 md_state[md_j] ^= md_pi_subst[md_t]; |
126 | 2073 md_t = md_state[md_j]; |
2074 } // for md_j 48 | |
2075 md_t = (unsigned char)(md_t+1); | |
2076 } // for md_i 18 | |
164 | 2077 md_t = char_O_hash[15]; |
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|
2078 |
126 | 2079 for (md_i=0;md_i<16;md_i++) |
2080 { | |
167 | 2081 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
164 | 2082 md_t = char_O_hash[md_i]; |
126 | 2083 } // for md_i 16 |
2084 } // for md_pointer | |
116 | 2085 } // void deco_hash(void) |
184 | 2086 #endif |
116 | 2087 |
167 | 2088 ////////////////////////////////////////////////////////////////////////////// |
2089 // deco_clear_CNS_fraction | |
2090 // | |
116 | 2091 // new in v.101 |
167 | 2092 // |
116 | 2093 void deco_clear_CNS_fraction(void) |
2094 { | |
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2095 RESET_C_STACK |
237 | 2096 |
126 | 2097 CNS_fraction = 0.0; |
2098 char_O_CNS_fraction = 0; | |
167 | 2099 } |
116 | 2100 |
167 | 2101 ////////////////////////////////////////////////////////////////////////////// |
2102 // deco_calc_CNS_fraction | |
2103 // | |
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2104 // Input: char_I_actual_ppO2 : Current condition (in decibars). |
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2105 // char_I_step_is_1min : use 1min or 10min steps instead of 2sec. |
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2106 // CNS_fraction : velue before period. |
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2107 // Output: CNS_fraction, char_O_CNS_fraction |
167 | 2108 // |
116 | 2109 void deco_calc_CNS_fraction(void) |
2110 { | |
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2111 overlay float time_factor = 1.0f; |
126 | 2112 RESET_C_STACK |
167 | 2113 |
471 | 2114 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
237 | 2115 assert( char_I_actual_ppO2 > 15 ); |
2116 | |
439
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2117 if( char_I_step_is_1min == 1 ) |
292 | 2118 time_factor = 30.0f; |
439
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2119 else if( char_I_step_is_1min == 2 ) |
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2120 time_factor = 300.0f; |
710 | 2121 //------------------------------------------------------------------------ |
2122 // Don't increase CNS below 0.5 bar, but keep it steady. | |
126 | 2123 if (char_I_actual_ppO2 < 50) |
292 | 2124 ; // no changes |
710 | 2125 //------------------------------------------------------------------------ |
2126 // Below (and including) 1.60 bar | |
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|
2127 else if (char_I_actual_ppO2 < 61) |
710 | 2128 CNS_fraction += time_factor/(-533.07 * char_I_actual_ppO2 + 54000.0); |
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2129 else if (char_I_actual_ppO2 < 71) |
710 | 2130 CNS_fraction += time_factor/(-444.22 * char_I_actual_ppO2 + 48600.0); |
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2131 else if (char_I_actual_ppO2 < 81) |
710 | 2132 CNS_fraction += time_factor/(-355.38 * char_I_actual_ppO2 + 42300.0); |
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|
2133 else if (char_I_actual_ppO2 < 91) |
710 | 2134 CNS_fraction += time_factor/(-266.53 * char_I_actual_ppO2 + 35100.0); |
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|
2135 else if (char_I_actual_ppO2 < 111) |
710 | 2136 CNS_fraction += time_factor/(-177.69 * char_I_actual_ppO2 + 27000.0); |
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|
2137 else if (char_I_actual_ppO2 < 152) |
710 | 2138 CNS_fraction += time_factor/( -88.84 * char_I_actual_ppO2 + 17100.0); |
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|
2139 else if (char_I_actual_ppO2 < 167) |
710 | 2140 CNS_fraction += time_factor/(-222.11 * char_I_actual_ppO2 + 37350.0); |
2141 //------------------------------------------------------------------------ | |
2142 // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity: | |
2143 // J Appl Physiol 92: 248–256, 2002, doi:10.1152/japplphysiol.00434.2001 | |
2144 // Formula (A1) based on value for 1.55 and c=20 | |
2145 // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
711
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|
2146 else if (char_I_actual_ppO2 < 172) |
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diff
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|
2147 CNS_fraction += time_factor*0.00102; |
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|
2148 else if (char_I_actual_ppO2 < 177) |
292 | 2149 CNS_fraction += time_factor*0.00136; |
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|
2150 else if (char_I_actual_ppO2 < 182) |
292 | 2151 CNS_fraction += time_factor*0.00180; |
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2152 else if (char_I_actual_ppO2 < 187) |
292 | 2153 CNS_fraction += time_factor*0.00237; |
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2154 else if (char_I_actual_ppO2 < 192) |
292 | 2155 CNS_fraction += time_factor*0.00310; |
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|
2156 else if (char_I_actual_ppO2 < 198) |
292 | 2157 CNS_fraction += time_factor*0.00401; |
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2158 else if (char_I_actual_ppO2 < 203) |
292 | 2159 CNS_fraction += time_factor*0.00517; |
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2160 else if (char_I_actual_ppO2 < 233) |
292 | 2161 CNS_fraction += time_factor*0.0209; |
126 | 2162 else |
292 | 2163 CNS_fraction += time_factor*0.0482; // value for 2.5 |
116 | 2164 |
514 | 2165 if( CNS_fraction > 2.5 ) |
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2166 CNS_fraction = 2.55; |
514 | 2167 if( CNS_fraction < 0.0 ) |
126 | 2168 CNS_fraction = 0.0; |
2169 | |
443
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2170 char_O_CNS_fraction = (unsigned char)(100.0 * CNS_fraction + 0.5); |
167 | 2171 } |
116 | 2172 |
167 | 2173 ////////////////////////////////////////////////////////////////////////////// |
439
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2174 // deco_calc_CNS_planning |
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2175 // |
511
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2176 // Compute CNS during predicted ascent. |
488 | 2177 // |
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2178 // Note: Needs a call to deco_push_tissues_to_vault(), |
488 | 2179 // deco_pull_tissues_from_vault() to avoid trashing everything... |
2180 // | |
2181 // Input: CNS_fraction, char_O_deco_time[], char_O_deco_depth[] | |
2182 // Output: CNS_fraction, char_O_CNS_fraction | |
2183 // | |
439
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2184 void deco_calc_CNS_planning(void) |
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2185 { |
490
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|
2186 overlay unsigned char backup_gas_last_depth; |
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|
2187 overlay unsigned char backup_gas_last_used; |
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|
2188 overlay unsigned short backup_gas_delay; |
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|
2189 overlay unsigned short backup_dive_mins; |
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|
2190 overlay unsigned char backup_actual_ppO2; |
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|
2191 |
439
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2192 RESET_C_STACK |
490
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2193 |
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2194 // Backup state machine |
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2195 backup_gas_last_depth = sim_gas_last_depth; |
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2196 backup_gas_last_used = sim_gas_last_used; |
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2197 backup_dive_mins = sim_dive_mins; |
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2198 backup_actual_ppO2 = char_I_actual_ppO2; |
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|
2199 |
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2200 // Uses 1min CNS period: |
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2201 char_I_step_is_1min = 1; |
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2202 |
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2203 //---- Retrieve bottom Gas used, and set variables. |
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2204 sim_gas_last_used = char_I_first_gas; |
443
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2205 sim_gas_last_depth = 0; // Surface gas marker. |
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2206 gas_switch_set(); // Sets initial calc_N2/He_ratio |
439
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2207 |
743 | 2208 //---- CCR mode : do the full CNS at once -------------------------------- |
439
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2209 if( char_I_const_ppO2 != 0 ) |
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2210 { |
443
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2211 overlay unsigned short t; // Needs 16bits here ! |
439
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2212 char_I_actual_ppO2 = char_I_const_ppO2; |
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2213 for(t=0; t<int_O_ascenttime; ++t) |
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2214 deco_calc_CNS_fraction(); |
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2215 } |
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2216 else //---- OC mode : have to follow all gas switches... ----------------- |
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2217 { |
443
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2218 overlay unsigned char i = 0; // Decostop loop counter |
439
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2219 overlay float actual_ppO2; |
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2220 overlay unsigned char time, t; |
563 | 2221 overlay unsigned char deepest_first = (read_custom_function(54) == 0); |
439
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2222 |
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2223 //---- Ascent to surface delay |
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2224 // NOTE: count as if time is spent with bottom pressure, |
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2225 // AND the bottom gas |
541
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|
2226 actual_ppO2 = (pres_surface + char_I_bottom_depth * METER_TO_BAR) |
439
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2227 * (1.0 - calc_N2_ratio - calc_He_ratio); |
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2228 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
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2229 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
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2230 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
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2231 |
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|
2232 // Ascent time (rounded up): |
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|
2233 time = (unsigned char)(0.1 * char_I_bottom_depth + 0.5); |
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2234 |
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2235 for(t=0; t<time; ++t) |
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2236 { |
439
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2237 deco_calc_CNS_fraction(); |
490
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2238 sim_dive_mins++; |
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2239 } |
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2240 |
563 | 2241 //---- Do all further stops ------------------------------------------ |
439
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2242 for(i=0; i<NUM_STOPS; ++i) |
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2243 { |
563 | 2244 overlay unsigned char switch_gas; |
2245 | |
2246 //---- Get next stop, possibly in reverse order ------------------ | |
2247 if( deepest_first ) | |
2248 { | |
2249 time = char_O_deco_time[i]; | |
2250 temp_depth_limit = char_O_deco_depth[i]; | |
2251 } | |
2252 else | |
2253 { | |
2254 time = char_O_deco_time[(NUM_STOPS-1)-i]; | |
2255 temp_depth_limit = char_O_deco_depth[(NUM_STOPS-1)-i]; | |
2256 } | |
2257 if( time == 0 ) continue; | |
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2258 |
563 | 2259 //---- Gas Switch ? ---------------------------------------------- |
2260 switch_gas = temp_depth_limit & 0x80; // Switch flag. | |
2261 temp_depth_limit &= 0x7F; // True stop depth. | |
2262 | |
2263 if( switch_gas ) | |
2264 { | |
2265 gas_switch_deepest(); | |
2266 gas_switch_set(); | |
2267 } | |
2268 | |
2269 //---- Convert Depth and N2_ratio to ppO2 ------------------------ | |
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|
2270 actual_ppO2 = (pres_surface + temp_depth_limit * METER_TO_BAR) |
439
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2271 * (1.0 - calc_N2_ratio - calc_He_ratio); |
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2272 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
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2273 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
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2274 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
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2275 |
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2276 //---- Apply the stop |
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2277 for(t=0; t<time; ++t) |
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2278 { |
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2279 deco_calc_CNS_fraction(); |
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2280 sim_dive_mins++; |
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2281 } |
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2282 } |
488 | 2283 } |
2284 | |
563 | 2285 //---- Back to normal mode... -------------------------------------------- |
488 | 2286 char_I_step_is_1min = 0; |
490
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|
2287 sim_gas_last_depth = backup_gas_last_depth; |
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|
2288 sim_gas_last_used = backup_gas_last_used; |
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2289 sim_dive_mins = backup_dive_mins; |
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2290 char_I_actual_ppO2 = backup_actual_ppO2; |
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2291 } |
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2292 |
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2293 ////////////////////////////////////////////////////////////////////////////// |
167 | 2294 // deco_calc_CNS_decrease_15min |
2295 // | |
116 | 2296 // new in v.101 |
167 | 2297 // |
116 | 2298 // calculates the half time of 90 minutes in 6 steps of 15 min |
200 | 2299 // (Used in sleepmode, for low battery mode). |
167 | 2300 // |
116 | 2301 // Output: char_O_CNS_fraction |
2302 // Uses and Updates: CNS_fraction | |
167 | 2303 // |
116 | 2304 void deco_calc_CNS_decrease_15min(void) |
2305 { | |
237 | 2306 RESET_C_STACK |
514 | 2307 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
237 | 2308 |
126 | 2309 CNS_fraction = 0.890899 * CNS_fraction; |
514 | 2310 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); |
167 | 2311 } |
116 | 2312 |
167 | 2313 ////////////////////////////////////////////////////////////////////////////// |
2314 // deco_calc_percentage | |
2315 // | |
116 | 2316 // new in v.101 |
167 | 2317 // |
116 | 2318 // calculates int_I_temp * char_I_temp / 100 |
2319 // output is int_I_temp | |
200 | 2320 // |
2321 // Used to compute NoFly remaining time. | |
222
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2322 // |
116 | 2323 void deco_calc_percentage(void) |
2324 { | |
122
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|
2325 RESET_C_STACK |
222
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2326 |
237 | 2327 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
564 | 2328 assert( int_I_temp < 5760 ); // Less than 4 days = 96h... |
237 | 2329 |
222
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2330 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
237 | 2331 |
554
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2332 assert( int_I_temp < 5760 ); // Less than 96h too... |
222
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2333 } |
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2334 |
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2335 |
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2336 ////////////////////////////////////////////////////////////////////////////// |
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2337 // deco_gas_volumes |
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2338 // |
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2339 // new in v.111 |
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2340 // |
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2341 // calculates volumes for each gas. |
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2342 // |
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2343 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
240
d995e220ddac
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2344 // Gas list. |
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2345 // char_I_first_gas is the bottom gas. |
222
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2346 // decoplan (char_O_deco_depth, char_O_deco_time). |
234
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2347 // CF#54 == TRUE if shallowest stop first. |
478
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2348 // CF#56 == bottom liters/minutes (5 .. 50) or bar/min. |
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2349 // CF#57 == deco liters/minutes (5 .. 50) or bar/min. |
224 | 2350 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
222
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2351 // |
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2352 void deco_gas_volumes(void) |
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2353 { |
338 | 2354 overlay float volumes[NUM_GAS]; |
478
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2355 overlay float bottom_usage, deco_usage; |
234
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2356 overlay unsigned char i, deepest_first; |
646 | 2357 overlay unsigned char gas, depth; |
222
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2358 RESET_C_STACK |
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2359 |
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2360 //---- initialize with bottom consumption -------------------------------- |
338 | 2361 for(i=0; i<NUM_GAS; ++i) // Nothing yet... |
240
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BUGFIX Gas Usage when first gas is not #1 (bug BB22).
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2362 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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2363 |
338 | 2364 assert(1 <= char_I_first_gas && char_I_first_gas <= NUM_GAS); |
241 | 2365 gas = char_I_first_gas - 1; |
2366 | |
478
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2367 bottom_usage = (float) read_custom_function(56); |
580
32448d5ca734
BUGFIX: GasVolume should not count bottom time/depth in CCR mode.
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|
2368 if( char_I_const_ppO2 == 0 && bottom_usage > 0.0 ) |
265 | 2369 volumes[gas] |
2370 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
2371 * char_I_bottom_time // in minutes. | |
2372 * bottom_usage; // In liter/minutes. | |
579
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BUGFIX: GasVolumes should check for a gas switch before the first stop.
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2373 |
222
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2374 //---- Ascent usage ------------------------------------------------------ |
234
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2375 deepest_first = read_custom_function(54) == 0; |
511
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2376 deco_usage = (float) read_custom_function(57); // In liter/minutes. |
222
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2377 |
646 | 2378 depth = char_I_bottom_depth; |
222
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2379 |
338 | 2380 for(i=0; i<NUM_STOPS; ++i) |
222
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2381 { |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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changeset
|
2382 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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233
diff
changeset
|
2383 |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
JeanDo
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233
diff
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|
2384 // Manage stops in reverse order (CF#54) |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
JeanDo
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233
diff
changeset
|
2385 if( deepest_first ) |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
JeanDo
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233
diff
changeset
|
2386 { |
241 | 2387 time = char_O_deco_time[i]; |
234
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2388 if( time == 0 ) break; // End of table: done. |
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BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2389 |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2390 newDepth = char_O_deco_depth[i] & 0x7F; |
234
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
JeanDo
parents:
233
diff
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|
2391 } |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
JeanDo
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233
diff
changeset
|
2392 else |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
JeanDo
parents:
233
diff
changeset
|
2393 { |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
JeanDo
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233
diff
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|
2394 time = char_O_deco_time[31-i]; |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2395 if( time == 0 ) continue; // not yet: still search table. |
234
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2396 |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2397 newDepth = char_O_deco_depth[31-i] & 0x7F; |
234
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2398 } |
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BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2399 |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2400 //---- Gas switch during this step ----------------------------------- |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
JeanDo
parents:
218
diff
changeset
|
2401 { |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2402 overlay unsigned char newGas = 0; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2403 overlay unsigned char newStop = 0; // NO CHANGE yet |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2404 overlay unsigned char j; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2405 |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2406 for(j=0; j<NUM_GAS; ++j) |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2407 { |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2408 // Skip gas without changing depth: |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2409 if( ! char_I_deco_gas_change[j] ) |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2410 continue; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2411 // Select gas changed between [newDepth .. depth] |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2412 if( newDepth <= char_I_deco_gas_change[j] |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2413 && char_I_deco_gas_change[j] <= depth ) |
646 | 2414 { |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2415 // Keep the DEEPEST gas in that range: |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2416 // Note: that = means changing gas at BEGINNING of this stop. |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2417 if( char_I_deco_gas_change[j] >= newStop ) |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2418 { |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2419 newGas = j; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2420 newStop = char_I_deco_gas_change[j]; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2421 } |
646 | 2422 } |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2423 } |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
JeanDo
parents:
218
diff
changeset
|
2424 |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2425 if( newStop ) // Did we find something ? |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2426 { |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2427 // usage BEFORE gas switch (if any), at 10m/min : |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2428 if( deco_usage > 0.0 && depth > newStop ) |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2429 // Plus usage during ascent to the next stop, at 10m/min. |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2430 volumes[gas] += ((depth+newStop)*0.05 + 1.0) // average depth --> bar. |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2431 * (depth-newStop)*0.1 // metre --> min |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2432 * deco_usage; |
646 | 2433 |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2434 // Do gas switch: |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2435 gas = newGas; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2436 depth = newStop; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2437 } |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2438 } |
646 | 2439 |
2440 // usage AFTER gas switch (if any), at 10m/min : | |
2441 if( depth > newDepth ) | |
2442 volumes[gas] += ((depth+newDepth)*0.05 + 1.0) // average depth --> bar. | |
2443 * (depth-newDepth)*0.1 // metre --> min | |
2444 * deco_usage; | |
2445 | |
2446 // Do stop: | |
2447 depth = newDepth; | |
2448 | |
2449 // Usage at stop: | |
478
fd8266b511cc
New SAC (CF56/CF57) in 5..50 l/min range (no more decimal).
JeanDo
parents:
471
diff
changeset
|
2450 if( deco_usage > 0.0 ) |
265 | 2451 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. |
2452 * time // in minutes. | |
646 | 2453 * deco_usage; // in xxx / min @ 1bar. |
265 | 2454 else |
2455 volumes[gas] = 65535.0; | |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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218
diff
changeset
|
2456 } |
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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parents:
218
diff
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|
2457 |
646 | 2458 // From last stop to surface |
2459 if( deco_usage > 0.0 ) | |
2460 volumes[gas] += (depth*0.05 + 1.0) // avg depth --> bar. | |
2461 * depth * 0.1 // time to surface, in minutes. | |
2462 * deco_usage; // in xxx / min @ 1bar. | |
2463 | |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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parents:
218
diff
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|
2464 //---- convert results for the ASM interface ----------------------------- |
338 | 2465 for(i=0; i<NUM_GAS; ++i) |
441
4826dd98514b
NEW: Decoplanner OC volumes in liters (or bars), up to 65000.
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parents:
439
diff
changeset
|
2466 if( volumes[i] > 65534.0 ) |
224 | 2467 int_O_gas_volumes[i] = 65535; |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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218
diff
changeset
|
2468 else |
441
4826dd98514b
NEW: Decoplanner OC volumes in liters (or bars), up to 65000.
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439
diff
changeset
|
2469 int_O_gas_volumes[i] = (unsigned short)(volumes[i] + 0.5); |
116 | 2470 } |
2471 | |
167 | 2472 ////////////////////////////////////////////////////////////////////////////// |
2473 | |
116 | 2474 void deco_push_tissues_to_vault(void) |
2475 { | |
167 | 2476 overlay unsigned char x; |
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
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parents:
116
diff
changeset
|
2477 RESET_C_STACK |
167 | 2478 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2479 cns_vault = CNS_fraction; |
697 | 2480 low_depth_vault = low_depth; |
2481 | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2482 for (x=0;x<NUM_COMP;x++) |
339 | 2483 { |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2484 pres_tissue_N2_vault[x] = pres_tissue_N2[x]; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2485 pres_tissue_He_vault[x] = pres_tissue_He[x]; |
339 | 2486 } |
116 | 2487 } |
167 | 2488 |
116 | 2489 void deco_pull_tissues_from_vault(void) |
2490 { | |
167 | 2491 overlay unsigned char x; |
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
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parents:
116
diff
changeset
|
2492 RESET_C_STACK |
167 | 2493 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2494 for (x=0; x<NUM_COMP; x++) |
339 | 2495 { |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2496 pres_tissue_N2[x] = pres_tissue_N2_vault[x]; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2497 pres_tissue_He[x] = pres_tissue_He_vault[x]; |
339 | 2498 } |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2499 |
292 | 2500 // Restore both CNS variable, too. |
2501 CNS_fraction = cns_vault; | |
514 | 2502 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); |
697 | 2503 |
2504 // GF history too: | |
2505 low_depth = low_depth_vault; | |
2506 locked_GF_step = GF_delta / low_depth; | |
116 | 2507 } |
2508 | |
167 | 2509 ////////////////////////////////////////////////////////////////////////////// |
2510 // | |
184 | 2511 #ifndef CROSS_COMPILE |
2512 void main() {} | |
2513 #endif |