Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 784:46ef1e1388f1
Merge
author | heinrichsweikamp |
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date | Mon, 23 Jun 2014 17:29:59 +0200 |
parents | e57e8045527d |
children | b0c96aaa86e4 |
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. |
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91 // 2013/10/22: [mH] Remove CF55 stuff |
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92 // 2013/12/21: [jDG] Fix CNS calculation in decoplan w/o marked gas switch |
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93 // 2014/06/16: [jDG] Fix Helium diluant. Fix volumes with many travel mix. |
116 | 94 // |
167 | 95 // TODO: |
96 // + Allow to abort MD2 calculation (have to restart next time). | |
97 // | |
98 // Literature: | |
200 | 99 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
116 | 100 // 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 |
101 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
102 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
103 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
104 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
167 | 105 // |
106 // | |
116 | 107 |
108 // ********************* | |
109 // ** I N C L U D E S ** | |
110 // ********************* | |
111 #include <math.h> | |
167 | 112 |
192 | 113 // *********************************************** |
114 // ** V A R I A B L E S D E F I N I T I O N S ** | |
115 // *********************************************** | |
116 | |
117 #include "p2_definitions.h" | |
275
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118 #define TEST_MAIN |
509 | 119 #include "../OSTC_code_asm_part1/shared_definitions.h" |
192 | 120 |
200 | 121 // Water vapour partial pressure in the lumb. |
527 | 122 #define ppWater 0.0627 |
317 | 123 #define METER_TO_BAR 0.09985 |
124 #define BAR_TO_METER 10.0150 // (1.0/METER_TO_BAR) | |
200 | 125 |
491
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126 // Surface security factor |
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127 #define SURFACE_DESAT_FACTOR 0.7042 |
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128 |
167 | 129 // ************************* |
130 // ** P R O T O T Y P E S ** | |
131 // ************************* | |
132 | |
133 static void calc_hauptroutine(void); | |
134 static void calc_nullzeit(void); | |
135 | |
192 | 136 static void calc_tissue(PARAMETER unsigned char period); |
258 | 137 static void calc_limit(void); |
192 | 138 |
167 | 139 static void clear_tissue(void); |
140 static void calc_ascenttime(void); | |
141 static void update_startvalues(void); | |
169
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142 static void clear_deco_table(void); |
471 | 143 static unsigned char update_deco_table(void); |
192 | 144 |
145 static void sim_tissue(PARAMETER unsigned char period); | |
146 static void sim_limit(PARAMETER float GF_current); | |
312
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147 static void sim_extra_time(void); |
368 | 148 static void calc_dive_interval(void); |
312
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149 |
167 | 150 static void calc_gradient_factor(void); |
151 static void calc_wo_deco_step_1_min(void); | |
152 | |
153 static void calc_hauptroutine_data_input(void); | |
154 static void calc_hauptroutine_update_tissues(void); | |
155 static void calc_hauptroutine_calc_deco(void); | |
169
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156 static void sim_ascent_to_first_stop(void); |
167 | 157 |
241 | 158 static unsigned char gas_switch_deepest(void); |
159 static void gas_switch_set(void); | |
217 | 160 |
241 | 161 static unsigned char calc_nextdecodepth(void); |
116 | 162 |
200 | 163 //---- Bank 4 parameters ----------------------------------------------------- |
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164 #ifndef UNIX |
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165 # pragma udata bank4=0x400 |
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166 #endif |
116 | 167 |
168 static float GF_low; | |
169 static float GF_high; | |
170 static float GF_delta; | |
192 | 171 static float locked_GF_step; // GF_delta / low_depth |
172 | |
173 static unsigned char temp_depth_limit; | |
695 | 174 float low_depth; // Depth of deepest stop |
171 | 175 |
757 | 176 static unsigned char internal_deco_time [NUM_STOPS]; |
338 | 177 static unsigned char internal_deco_depth[NUM_STOPS]; |
757 | 178 static unsigned char internal_deco_gas [NUM_STOPS]; |
116 | 179 |
180 static float cns_vault; | |
697 | 181 static float low_depth_vault; |
339 | 182 static float pres_tissue_N2_vault[NUM_COMP]; |
183 static float pres_tissue_He_vault[NUM_COMP]; | |
116 | 184 |
163 | 185 //---- Bank 5 parameters ----------------------------------------------------- |
601
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186 #ifndef UNIX |
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187 # pragma udata bank5=0x500 |
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188 #endif |
163 | 189 |
167 | 190 static unsigned char ci; |
116 | 191 static float pres_respiration; |
192 static float pres_surface; | |
193 static float temp_deco; | |
236 | 194 static float ppN2; |
200 | 195 static float ppHe; |
116 | 196 static float temp_tissue; |
200 | 197 static float N2_ratio; // Breathed gas nitrogen ratio. |
198 static float He_ratio; // Breathed gas helium ratio. | |
199 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
200 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
201 static float var_He_a; // Bühlmann a, for current He tissue. | |
202 static float var_He_b; // Bühlmann b, for current He tissue. | |
203 static float var_N2_e; // Exposition, for current N2 tissue. | |
204 static float var_He_e; // Exposition, for current He tissue. | |
509 | 205 static float var_N2_ht; // Half-time for current N2 tissue. |
206 static float var_He_ht; // Half-time for current N2 tissue. | |
116 | 207 |
338 | 208 static float pres_diluent; // new in v.101 |
209 static float const_ppO2; // new in v.101 | |
116 | 210 |
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211 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
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212 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. |
203 | 213 static unsigned short sim_dive_mins; // Simulated dive time. |
200 | 214 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
215 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
216 static float CNS_fraction; // new in v.101 | |
217 static float float_saturation_multiplier; // new in v.101 | |
218 static float float_desaturation_multiplier; // new in v.101 | |
338 | 219 static float float_deco_distance; // new in v.101 |
167 | 220 |
338 | 221 static unsigned char deco_gas_change[NUM_GAS]; // new in v.109 |
167 | 222 |
757 | 223 // Simulation context: used to predict ascent. |
224 unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
225 float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
226 | |
227 // Real context: what we are doing now. | |
228 static float calc_lead_tissue_limit; // | |
229 | |
163 | 230 //---- Bank 6 parameters ----------------------------------------------------- |
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231 #ifndef UNIX |
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232 # pragma udata bank6=0x600 |
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233 #endif |
116 | 234 |
339 | 235 float pres_tissue_N2[NUM_COMP]; |
236 float pres_tissue_He[NUM_COMP]; | |
509 | 237 float sim_pres_tissue_N2[NUM_COMP]; // 16 floats = 64 bytes. |
238 float sim_pres_tissue_He[NUM_COMP]; // 16 floats = 64 bytes. | |
116 | 239 |
163 | 240 //---- Bank 7 parameters ----------------------------------------------------- |
601
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241 #ifndef UNIX |
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242 # pragma udata bank7=0x700 |
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243 #endif |
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244 |
509 | 245 // EMPTY ... |
116 | 246 |
163 | 247 //---- Bank 8 parameters ----------------------------------------------------- |
601
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248 #ifndef UNIX |
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249 # pragma udata bank8=0x800 |
163 | 250 |
601
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251 static char md_pi_subst[256]; |
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252 # define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
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253 |
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254 #endif |
116 | 255 |
163 | 256 //---- Bank 9 parameters ----------------------------------------------------- |
601
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257 #ifndef UNIX |
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258 # pragma udata bank9=0x900 |
116 | 259 |
601
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260 static char md_state[48]; // DONT MOVE : has to be at the beginning of bank 9 for the asm code!!! |
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261 #endif |
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262 |
116 | 263 |
167 | 264 ////////////////////////////////////////////////////////////////////////////// |
265 ////////////////////////////////////////////////////////////////////////////// | |
266 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
267 ////////////////////////////////////////////////////////////////////////////// | |
268 ////////////////////////////////////////////////////////////////////////////// | |
269 // | |
270 // End of PROM code is 17F00, So push tables on PROM top... | |
271 // | |
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272 #ifndef UNIX |
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273 # pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. |
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274 #endif |
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275 |
167 | 276 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) |
116 | 277 |
167 | 278 // Magic table to compute the MD2 HASH |
279 // | |
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280 #ifndef UNIX |
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281 # pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... |
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282 rom const rom unsigned short md_pi[] = |
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283 { |
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284 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 |
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285 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA |
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286 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 |
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287 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A |
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288 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 |
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289 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 |
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290 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 |
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291 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 |
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292 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 |
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293 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F |
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294 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 |
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295 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 |
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296 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A |
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297 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 |
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298 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A |
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299 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 |
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300 }; |
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301 #endif |
116 | 302 |
167 | 303 ////////////////////////////////////////////////////////////////////////////// |
304 ////////////////////////////////////////////////////////////////////////////// | |
305 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
306 ////////////////////////////////////////////////////////////////////////////// | |
307 ////////////////////////////////////////////////////////////////////////////// | |
308 // | |
116 | 309 // all new in v.102 |
310 // moved from 0x0D000 to 0x0C000 in v.108 | |
601
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311 #ifndef UNIX |
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312 # pragma code p2_deco = 0x0C000 |
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313 #endif |
116 | 314 |
167 | 315 ////////////////////////////////////////////////////////////////////////////// |
316 ////////////////////////////////////////////////////////////////////////////// | |
317 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
318 ////////////////////////////////////////////////////////////////////////////// | |
319 ////////////////////////////////////////////////////////////////////////////// | |
320 | |
235 | 321 ////////////////////////////////////////////////////////////////////////////// |
257
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322 // Bump to blue-screen when an assert is wrong |
235 | 323 #ifdef __DEBUG |
324 void assert_failed(PARAMETER short int line) | |
325 { | |
681 | 326 extern void DISP_resetdebugger(void); |
235 | 327 extern unsigned short temp10; |
328 | |
257
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329 temp10 = line; // Show source line number as stack depth. |
681 | 330 DISP_resetdebugger(); |
235 | 331 } |
332 #endif | |
257
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333 |
235 | 334 ////////////////////////////////////////////////////////////////////////////// |
335 // When calling C code from ASM context, the data stack pointer and | |
336 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
337 | |
338 #ifdef CROSS_COMPILE | |
339 # define RESET_C_STACK | |
340 #else | |
341 # ifdef __DEBUG | |
342 # define RESET_C_STACK fillDataStack(); | |
343 void fillDataStack(void) | |
344 { | |
345 _asm | |
346 LFSR 1,C_STACK | |
347 MOVLW 0xCC | |
348 loop: MOVWF POSTINC1,0 | |
349 TSTFSZ FSR1L,0 | |
350 BRA loop | |
711
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351 |
235 | 352 LFSR 1,C_STACK |
353 LFSR 2,C_STACK | |
354 _endasm | |
355 } | |
356 # else | |
357 # define RESET_C_STACK \ | |
358 _asm \ | |
359 LFSR 1, C_STACK \ | |
360 LFSR 2, C_STACK \ | |
361 _endasm | |
362 # endif | |
363 #endif | |
364 | |
365 ////////////////////////////////////////////////////////////////////////////// | |
257
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366 // Read CF values from the C code. |
235 | 367 |
488 | 368 #ifdef CROSS_COMPILE |
369 // Full description of the OSTC EEPROM map, including CF values. | |
370 # include "OSTC_eeprom.h" | |
371 #endif | |
372 | |
203 | 373 static short read_custom_function(PARAMETER unsigned char cf) |
167 | 374 { |
184 | 375 #ifdef CROSS_COMPILE |
743 | 376 return READ_CF_MACRO(cf); |
184 | 377 #else |
167 | 378 extern unsigned char hi, lo; |
379 extern void getcustom15(); | |
380 _asm | |
381 movff cf,WREG | |
382 call getcustom15,0 | |
383 movff lo,PRODL | |
384 movff hi,PRODH | |
385 _endasm | |
184 | 386 #endif |
167 | 387 } |
388 | |
389 ////////////////////////////////////////////////////////////////////////////// | |
257
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390 // Fast subroutine to read RTC timer 3. |
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391 // Note: result is in 1/32 of msecs. |
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392 static unsigned short tmr3(void) |
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393 { |
261 | 394 #ifndef CROSS_COMPILE |
257
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395 _asm |
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396 movff 0xfb2,PRODL // TMR3L |
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397 movff 0xfb3,PRODH // TMR3H |
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398 _endasm // result in PRODH:PRODL. |
261 | 399 #else |
400 return 0; | |
401 #endif | |
257
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402 } |
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403 |
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404 ////////////////////////////////////////////////////////////////////////////// |
258 | 405 // read buhlmann tables A and B for compatriment ci |
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406 // |
258 | 407 static void read_buhlmann_coefficients(void) |
165 | 408 { |
184 | 409 #ifndef CROSS_COMPILE |
167 | 410 // Note: we don't use far rom pointer, because the |
338 | 411 // 24 bits is too complex, hence we have to set |
167 | 412 // the UPPER page ourself... |
413 // --> Set zero if tables are moved to lower pages ! | |
414 _asm | |
415 movlw 1 | |
416 movwf TBLPTRU,0 | |
417 _endasm | |
184 | 418 #endif |
258 | 419 |
564 | 420 assert( ci < NUM_COMP ); |
338 | 421 |
422 // Use an interleaved array (AoS) to access coefficients with a | |
423 // single addressing. | |
424 { | |
425 overlay rom const float* ptr = &buhlmann_ab[4*ci]; | |
426 var_N2_a = *ptr++; | |
427 var_N2_b = *ptr++; | |
428 var_He_a = *ptr++; | |
429 var_He_b = *ptr++; | |
430 } | |
258 | 431 } |
432 | |
433 ////////////////////////////////////////////////////////////////////////////// | |
434 // read buhlmann tables for compatriment ci | |
435 // If period == 0 : 2sec interval | |
436 // 1 : 1 min interval | |
437 // 2 : 10 min interval. | |
438 static void read_buhlmann_times(PARAMETER char period) | |
439 { | |
440 #ifndef CROSS_COMPILE | |
441 // Note: we don't use far rom pointer, because the | |
442 // 24 bits is to complex, hence we have to set | |
443 // the UPPER page ourself... | |
444 // --> Set zero if tables are moved to lower pages ! | |
445 _asm | |
446 movlw 1 | |
447 movwf TBLPTRU,0 | |
448 _endasm | |
449 #endif | |
338 | 450 |
564 | 451 assert( ci < NUM_COMP ); |
258 | 452 |
165 | 453 // Integration intervals. |
167 | 454 switch(period) |
165 | 455 { |
456 case 0: //---- 2 sec ----------------------------------------------------- | |
338 | 457 { |
458 overlay rom const float* ptr = &e2secs[2*ci]; | |
459 var_N2_e = *ptr++; | |
460 var_He_e = *ptr++; | |
461 } | |
165 | 462 break; |
463 | |
464 case 1: //---- 1 min ----------------------------------------------------- | |
338 | 465 { |
466 overlay rom const float* ptr = &e1min[2*ci]; | |
467 var_N2_e = *ptr++; | |
468 var_He_e = *ptr++; | |
469 } | |
165 | 470 break; |
471 | |
472 case 2: //---- 10 min ---------------------------------------------------- | |
338 | 473 { |
474 overlay rom const float* ptr = &e10min[2*ci]; | |
475 var_N2_e = *ptr++; | |
476 var_He_e = *ptr++; | |
477 } | |
165 | 478 break; |
197 | 479 |
480 default: | |
527 | 481 assert(0); // Never go there... |
165 | 482 } |
483 } | |
484 | |
485 ////////////////////////////////////////////////////////////////////////////// | |
509 | 486 // read buhlmann tables for compatriment ci |
711
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487 // |
509 | 488 static void read_buhlmann_ht(void) |
489 { | |
490 | |
491 #ifndef CROSS_COMPILE | |
492 // Note: we don't use far rom pointer, because the | |
493 // 24 bits is to complex, hence we have to set | |
494 // the UPPER page ourself... | |
495 // --> Set zero if tables are moved to lower pages ! | |
496 _asm | |
497 movlw 1 | |
498 movwf TBLPTRU,0 | |
499 _endasm | |
500 #endif | |
501 | |
564 | 502 assert( ci < NUM_COMP ); |
509 | 503 { |
504 overlay rom const float* ptr = &buhlmann_ht[2*ci]; | |
505 var_N2_ht = *ptr++; | |
506 var_He_ht = *ptr++; | |
711
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507 } |
509 | 508 |
509 assert( 4.0 <= var_N2_ht && var_N2_ht <= 635.0 ); | |
510 assert( 1.5099 <= var_He_ht && var_He_ht <= 240.03 ); | |
511 } | |
512 | |
513 ////////////////////////////////////////////////////////////////////////////// | |
340
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BUGFIX save negativ temperatures in logbook (bbbug #6)
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514 // calc_nextdecodepth |
165 | 515 // |
116 | 516 // new in v.102 |
165 | 517 // |
116 | 518 // INPUT, changing during dive: |
509 | 519 // temp_deco |
192 | 520 // low_depth |
167 | 521 // |
116 | 522 // INPUT, fixed during dive: |
167 | 523 // pres_surface |
524 // GF_delta | |
525 // GF_high | |
526 // GF_low | |
171 | 527 // char_I_depth_last_deco |
167 | 528 // float_deco_distance |
529 // | |
241 | 530 // RETURN TRUE iff a stop is needed. |
531 // | |
116 | 532 // OUTPUT |
171 | 533 // locked_GF_step |
167 | 534 // temp_depth_limt |
192 | 535 // low_depth |
167 | 536 // |
241 | 537 static unsigned char calc_nextdecodepth(void) |
167 | 538 { |
241 | 539 //--- Max ascent speed --------------------------------------------------- |
540 // Recompute leading gas limit, at current depth: | |
317 | 541 overlay float depth = (temp_deco - pres_surface) * BAR_TO_METER; |
241 | 542 |
543 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
302 | 544 overlay float min_depth = (depth > 10.0) ? (depth - 10.0) : 0.0; |
711
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545 |
241 | 546 // Do we need to stop at current depth ? |
547 overlay unsigned char need_stop = 0; | |
548 | |
549 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
550 | |
212 | 551 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
711
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552 if( char_I_deco_model != 0 ) |
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553 { |
562 | 554 overlay unsigned char first_stop = 0; |
555 overlay float p; | |
556 | |
567 | 557 sim_limit( GF_low ); |
562 | 558 p = sim_lead_tissue_limit - pres_surface; |
695 | 559 p *= BAR_TO_METER; |
562 | 560 if( p <= 0.0f ) |
561 goto no_deco_stop; // We can surface directly... | |
512
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BUGFIX Spurious stop order when simulating deadly fast ascent.
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562 |
695 | 563 // Store the deepest point needing a deco stop as the LOW reference for GF. |
564 // NOTE: following stops will be validated using this LOW-HIGH gf scale, | |
565 // so if we want to keep coherency, we should not validate this stop | |
566 // yet, but apply the search to it, as for all the following stops afterward. | |
567 if( p > low_depth ) | |
568 { | |
569 low_depth = p; | |
570 locked_GF_step = GF_delta / low_depth; | |
571 } | |
572 | |
562 | 573 if( p < min_depth ) |
574 goto no_deco_stop; // First stop is higher than 1' ascent. | |
275
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575 |
695 | 576 // Round to multiple of 3m. |
577 first_stop = 3 * (short)(0.9995f + p*0.333333f); | |
562 | 578 assert( first_stop < 128 ); |
579 | |
580 // Apply correction for the shallowest stop. | |
581 if( first_stop == 3 ) // new in v104 | |
582 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
171 | 583 |
562 | 584 // We have a stop candidate. |
585 // But maybe ascending to the next stop will diminish the constraint, | |
586 // because the GF might decrease more than the preassure gradient... | |
587 while(first_stop > 0) | |
588 { | |
589 overlay unsigned char next_stop; // Next depth (0..90m) | |
171 | 590 |
562 | 591 // Check max speed, or reaching surface. |
592 if( first_stop <= min_depth ) | |
593 goto no_deco_stop; | |
171 | 594 |
562 | 595 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
596 next_stop = 0; | |
597 else if( first_stop == 6 ) | |
598 next_stop = char_I_depth_last_deco; | |
599 else | |
600 next_stop = first_stop - 3; // Index of next (upper) stop. | |
711
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601 |
562 | 602 // Total preassure at the new stop candidate: |
695 | 603 p = next_stop * METER_TO_BAR |
711
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604 + pres_surface; |
167 | 605 |
695 | 606 // Recompute limit for this new stop: |
607 if( !low_depth || next_stop > low_depth ) | |
608 sim_limit( GF_low ); | |
609 else | |
610 sim_limit( GF_high - next_stop * locked_GF_step ); | |
192 | 611 |
695 | 612 // Check upper limit (lowest ambiant pressure tolerated): |
613 if( sim_lead_tissue_limit >= p ) | |
614 goto deco_stop_found; // Ascent to next_stop forbiden. | |
562 | 615 |
616 // Else, validate that stop and loop... | |
617 first_stop = next_stop; | |
618 } | |
171 | 619 |
562 | 620 no_deco_stop: |
711
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621 temp_depth_limit = min_depth; |
562 | 622 goto done; |
212 | 623 |
695 | 624 deco_stop_found: |
562 | 625 // next stop is the last validated depth found, aka first_stop |
626 need_stop = 1; // Hit. | |
627 temp_depth_limit = first_stop; // Stop depth, in meter. | |
628 | |
629 done: | |
630 ; | |
711
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631 } |
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632 else //---- ZH-L16 model ------------------------------------------------- |
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633 { |
192 | 634 overlay float pres_gradient; |
635 | |
711
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636 // Original model |
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637 // optimized in v.101 |
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638 // char_I_depth_last_deco included in v.101 |
116 | 639 |
192 | 640 // Compute sim_lead_tissue_limit too, but just once. |
641 sim_limit(1.0); | |
642 | |
711
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643 pres_gradient = sim_lead_tissue_limit - pres_surface; |
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644 if (pres_gradient >= 0) |
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645 { |
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646 pres_gradient *= BAR_TO_METER/3; // Bar --> stop number; |
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diff
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647 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
241 | 648 need_stop = 1; // Hit. |
649 | |
650 // Implement last stop at 4m/5m/6m... | |
711
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651 if( temp_depth_limit == 3 ) |
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diff
changeset
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652 temp_depth_limit = char_I_depth_last_deco; |
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653 } |
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654 else |
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655 temp_depth_limit = 0; |
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656 } |
212 | 657 |
217 | 658 //---- Check gas change -------------------------------------------------- |
241 | 659 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
660 | |
661 return need_stop; | |
167 | 662 } |
116 | 663 |
167 | 664 ////////////////////////////////////////////////////////////////////////////// |
169
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665 // copy_deco_table |
167 | 666 // |
169
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667 // Buffer the stops, once computed, so we can continue to display them |
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668 // while computing the next set. |
167 | 669 // |
169
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670 static void copy_deco_table(void) |
116 | 671 { |
169
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672 // Copy depth of the first (deepest) stop, because when reversing |
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673 // order, it will be hard to find... |
766
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674 char_O_first_deco_depth = internal_deco_depth[0]; |
169
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675 char_O_first_deco_time = internal_deco_time [0]; |
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676 |
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677 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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678 { |
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679 overlay unsigned char x, y; |
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680 |
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681 //---- First: search the first non-null depth |
339 | 682 for(x=(NUM_STOPS-1); x != 0; --x) |
169
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683 if( internal_deco_depth[x] != 0 ) break; |
116 | 684 |
169
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685 //---- Second: copy to output table (in reverse order) |
338 | 686 for(y=0; y<NUM_STOPS; y++, --x) |
169
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687 { |
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688 char_O_deco_depth[y] = internal_deco_depth[x]; |
633
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689 char_O_deco_time_for_log[y] = internal_deco_time [x]; |
169
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690 char_O_deco_time [y] = internal_deco_time [x]; |
757 | 691 char_O_deco_gas [y] = internal_deco_gas [x]; |
169
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692 |
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693 // Stop only once the last transfer is done. |
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694 if( x == 0 ) break; |
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695 } |
116 | 696 |
169
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697 //---- Third: fill table end with null |
339 | 698 for(y++; y<NUM_STOPS; y++) |
169
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699 { |
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700 char_O_deco_time [y] = 0; |
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701 char_O_deco_depth[y] = 0; |
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702 char_O_deco_time_for_log[y] = 0; |
757 | 703 char_O_deco_gas [y] = 0; |
169
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704 } |
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705 } |
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706 else //---- Straight copy ------------------------------------------------ |
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707 { |
630
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708 overlay unsigned char x, y; |
167 | 709 |
339 | 710 for(x=0; x<NUM_STOPS; x++) |
169
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711 { |
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712 char_O_deco_depth[x] = internal_deco_depth[x]; |
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713 char_O_deco_time [x] = internal_deco_time [x]; |
757 | 714 char_O_deco_gas [x] = internal_deco_gas [x]; |
169
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715 } |
630
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716 |
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717 //Now fill the char_O_deco_time_for_log array |
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718 //---- First: search the first non-null depth |
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719 for(x=(NUM_STOPS-1); x != 0; --x) |
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720 if( internal_deco_depth[x] != 0 ) break; |
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721 |
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722 //---- Second: copy to output table (in reverse order) |
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723 for(y=0; y<NUM_STOPS; y++, --x) |
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724 { |
633
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725 char_O_deco_time_for_log[y] = internal_deco_time [x]; |
630
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726 |
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727 // Stop only once the last transfer is done. |
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728 if( x == 0 ) break; |
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729 } |
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730 |
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731 //---- Third: fill table end with null |
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732 for(y++; y<NUM_STOPS; y++) |
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733 { |
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734 char_O_deco_time_for_log [y] = 0; |
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735 } |
169
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736 } |
167 | 737 } |
116 | 738 |
167 | 739 ////////////////////////////////////////////////////////////////////////////// |
116 | 740 // temp_tissue_safety // |
167 | 741 // |
116 | 742 // outsourced in v.102 |
167 | 743 // |
744 // Apply safety factors for brand ZH-L16 model. | |
745 // | |
746 static void temp_tissue_safety(void) | |
116 | 747 { |
197 | 748 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
749 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
750 | |
711
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751 if( char_I_deco_model == 0 ) |
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|
752 { |
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|
753 if( temp_tissue < 0.0 ) |
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|
754 temp_tissue *= float_desaturation_multiplier; |
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755 else |
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|
756 temp_tissue *= float_saturation_multiplier; |
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757 } |
167 | 758 } |
116 | 759 |
167 | 760 ////////////////////////////////////////////////////////////////////////////// |
761 ////////////////////////////////////////////////////////////////////////////// | |
116 | 762 // ** THE JUMP-IN CODE ** |
763 // ** for the asm code ** | |
167 | 764 ////////////////////////////////////////////////////////////////////////////// |
765 ////////////////////////////////////////////////////////////////////////////// | |
122
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766 |
167 | 767 ////////////////////////////////////////////////////////////////////////////// |
169
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768 // Called every 2 seconds during diving. |
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769 // update tissues every time. |
184 | 770 // |
169
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771 // Every 6 seconds (or slower when TTS > 16): |
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772 // - update deco table (char_O_deco_time/depth) with new values. |
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773 // - update ascent time, |
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774 // - set status to zero (so we can check there is new results). |
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775 // |
116 | 776 void deco_calc_hauptroutine(void) |
777 { | |
122
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778 RESET_C_STACK |
116 | 779 calc_hauptroutine(); |
780 int_O_desaturation_time = 65535; | |
781 } | |
782 | |
167 | 783 ////////////////////////////////////////////////////////////////////////////// |
184 | 784 // Reset decompression model: |
785 // + Set all tissues to equilibrium with Air at ambient pressure. | |
786 // + Reset last stop to 0m | |
787 // + Reset all model output. | |
116 | 788 void deco_clear_tissue(void) |
789 { | |
122
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790 RESET_C_STACK |
116 | 791 clear_tissue(); |
792 } | |
793 | |
167 | 794 ////////////////////////////////////////////////////////////////////////////// |
278 | 795 // Called every 1 min during decoplanning. |
796 // Update tissues for 1 min. | |
797 // | |
798 void deco_calc_tissue(void) | |
799 { | |
800 RESET_C_STACK | |
801 calc_hauptroutine_update_tissues(); | |
711
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802 } |
278 | 803 |
804 ////////////////////////////////////////////////////////////////////////////// | |
167 | 805 |
116 | 806 void deco_calc_wo_deco_step_1_min(void) |
807 { | |
122
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808 RESET_C_STACK |
116 | 809 calc_wo_deco_step_1_min(); |
810 deco_calc_desaturation_time(); | |
811 } | |
812 | |
167 | 813 ////////////////////////////////////////////////////////////////////////////// |
814 | |
368 | 815 void deco_calc_dive_interval(void) |
816 { | |
817 RESET_C_STACK | |
818 calc_dive_interval(); | |
819 } | |
820 | |
241 | 821 ////////////////////////////////////////////////////////////////////////////// |
822 // Find current gas in the list (if any). | |
711
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823 // |
513 | 824 // Input: char_I_current_gas = 1..6 |
241 | 825 // |
513 | 826 // Output: sim_gas_last_depth = 0..5, temp_depth_limit. |
241 | 827 // |
828 static void gas_switch_find_current(void) | |
829 { | |
513 | 830 assert( 0 < char_I_current_gas && char_I_current_gas <= (NUM_GAS+1) ); |
247
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831 |
388 | 832 if( char_I_current_gas <= NUM_GAS ) // Gas1..Gas5 |
353
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833 { |
388 | 834 sim_gas_last_used = char_I_current_gas; |
835 | |
836 // Note: if current is first gas, we must find it, but not set | |
837 // last depth change to surface. | |
838 if( char_I_deco_gas_change[sim_gas_last_used-1] ) | |
839 sim_gas_last_depth = char_I_deco_gas_change[sim_gas_last_used-1]; | |
241 | 840 } |
388 | 841 else |
842 sim_gas_last_used = 0; // Gas 6 = manual set | |
241 | 843 } |
844 | |
167 | 845 ////////////////////////////////////////////////////////////////////////////// |
217 | 846 // Find deepest available gas. |
711
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|
847 // |
241 | 848 // Input: temp_depth_limit, |
849 // deco_gas_change[] | |
766
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850 // sim_gas_depth_used, sim_dive_mins. |
212 | 851 // |
241 | 852 // RETURNS TRUE if a stop is needed for gas switch. |
853 // | |
766
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diff
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|
854 // Output: temp_depth_limit, sim_gas_depth_used IFF the is a switch. |
212 | 855 // |
766
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856 // NOTE: might be called from bottom (when sim_gas_depth_used |
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857 // is null), or during the ascent to make sure we are not passing a |
241 | 858 // stop (in which case both can be already set). |
859 // | |
860 static unsigned char gas_switch_deepest(void) | |
201 | 861 { |
241 | 862 overlay unsigned char switch_deco = 0, switch_last = 0; |
201 | 863 |
864 if (char_I_const_ppO2 == 0) | |
865 { | |
225 | 866 overlay unsigned char j; |
867 | |
241 | 868 // 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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diff
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|
869 // above last used gas, but below temp_depth_limit. |
338 | 870 for(j=0; j<NUM_GAS; ++j) |
225 | 871 { |
241 | 872 // Gas not (yet) allowed ? Skip ! |
873 if( temp_depth_limit > deco_gas_change[j] ) | |
874 continue; | |
875 | |
353
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876 // Gas deeper (or equal) than the current one ? Skip ! |
241 | 877 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) |
878 continue; | |
879 | |
880 // First, or deeper ? | |
247
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diff
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|
881 if( switch_deco < deco_gas_change[j] ) |
241 | 882 { |
883 switch_deco = deco_gas_change[j]; | |
388 | 884 switch_last = j+1; // 1..5 |
241 | 885 } |
225 | 886 } |
201 | 887 } |
888 | |
203 | 889 // If there is a better gas available |
241 | 890 if( switch_deco ) |
201 | 891 { |
241 | 892 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
201 | 893 |
241 | 894 sim_gas_last_depth = switch_deco; |
895 sim_gas_last_used = switch_last; | |
755 | 896 return 0; |
217 | 897 } |
241 | 898 return 0; |
217 | 899 } |
900 | |
901 ////////////////////////////////////////////////////////////////////////////// | |
902 // Calculate gas switches | |
711
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|
903 // |
217 | 904 // |
905 // Input: N2_ratio, He_ratio. | |
906 // sim_gas_last_used | |
907 // | |
908 // Output: calc_N2_ratio, calc_He_ratio | |
909 // | |
241 | 910 static void gas_switch_set(void) |
217 | 911 { |
564 | 912 assert( sim_gas_last_used <= NUM_GAS ); |
217 | 913 |
388 | 914 if( sim_gas_last_used == 0 ) // Gas6 = manualy set gas. |
224 | 915 { |
916 calc_N2_ratio = N2_ratio; | |
711
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|
917 calc_He_ratio = He_ratio; |
224 | 918 } |
919 else | |
920 { | |
921 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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|
922 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; |
217 | 923 } |
201 | 924 |
925 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
782
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minor fix: assert should pass for pure helium diluant
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diff
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|
926 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 1.00 ); |
201 | 927 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); |
928 } | |
929 | |
930 ////////////////////////////////////////////////////////////////////////////// | |
931 // | |
212 | 932 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
509 | 933 // temp_deco : simulated respiration pressure |
276 | 934 // float_deco_distance : security factor. |
310
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935 // Water-vapor pressure inside limbs (ppWater). |
212 | 936 // |
236 | 937 // Output: ppN2, ppHe. |
212 | 938 // |
939 static void sim_alveolar_presures(void) | |
201 | 940 { |
212 | 941 overlay float deco_diluent = temp_deco; // new in v.101 |
942 | |
276 | 943 // Take deco offset into account, but not at surface. |
944 // Note: this should be done on ambiant pressure, hence before | |
945 // computing the diluant partial pressure... | |
946 if( deco_diluent > pres_surface ) | |
947 deco_diluent += float_deco_distance; | |
948 | |
212 | 949 //---- CCR mode : deco gas switch ? -------------------------------------- |
276 | 950 if( char_I_const_ppO2 != 0 ) |
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951 { |
276 | 952 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
953 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
310
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954 // ppWater in the equations below: |
321 | 955 deco_diluent -= const_ppO2; |
276 | 956 deco_diluent /= calc_N2_ratio + calc_He_ratio; |
212 | 957 |
958 if (deco_diluent > temp_deco) | |
711
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959 deco_diluent = temp_deco; |
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960 } |
201 | 961 |
310
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962 if( deco_diluent > ppWater ) |
201 | 963 { |
310
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964 ppN2 = calc_N2_ratio * (deco_diluent - ppWater); |
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965 ppHe = calc_He_ratio * (deco_diluent - ppWater); |
201 | 966 } |
967 else | |
968 { | |
236 | 969 ppN2 = 0.0; |
201 | 970 ppHe = 0.0; |
971 } | |
236 | 972 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
201 | 973 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
974 } | |
975 | |
976 ////////////////////////////////////////////////////////////////////////////// | |
167 | 977 // clear_tissue |
978 // | |
165 | 979 // optimized in v.101 (var_N2_a) |
167 | 980 // |
981 // preload tissues with standard pressure for the given ambient pressure. | |
982 // Note: fixed N2_ratio for standard air. | |
201 | 983 // |
167 | 984 static void clear_tissue(void) |
116 | 985 { |
511
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986 overlay float p; |
116 | 987 |
167 | 988 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
989 N2_ratio = 0.7902; | |
212 | 990 pres_respiration = int_I_pres_respiration * 0.001; |
711
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991 |
511
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992 p = N2_ratio * (pres_respiration - ppWater); |
338 | 993 for(ci=0; ci<NUM_COMP; ci++) |
126 | 994 { |
511
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995 // cycle through the 16 Bühlmann N2 tissues |
339 | 996 pres_tissue_N2[ci] = p; |
197 | 997 |
998 // cycle through the 16 Bühlmann tissues for Helium | |
339 | 999 pres_tissue_He[ci] = 0.0; |
511
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1000 } |
116 | 1001 |
169
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1002 clear_deco_table(); |
126 | 1003 char_O_deco_status = 0; |
1004 char_O_nullzeit = 0; | |
168 | 1005 int_O_ascenttime = 0; |
126 | 1006 char_O_gradient_factor = 0; |
1007 char_O_relative_gradient_GF = 0; | |
258 | 1008 |
1009 calc_lead_tissue_limit = 0.0; | |
1010 char_O_gtissue_no = 0; | |
167 | 1011 } |
116 | 1012 |
167 | 1013 ////////////////////////////////////////////////////////////////////////////// |
1014 // calc_hauptroutine | |
1015 // | |
1016 // this is the major code in dive mode calculates: | |
116 | 1017 // the tissues, |
167 | 1018 // the bottom time, |
1019 // and simulates the ascend with all deco stops. | |
171 | 1020 // |
1021 // The deco_state sequence is : | |
1022 // 3 (at surface) | |
1023 // +---> 0 : calc nullzeit | |
1024 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
1025 // | +-> 1 : simulate up to 16min of stops. | |
1026 // | +------< not finished | |
1027 // +--------< finish | |
1028 // | |
312
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1029 // Added steps 6,5 for @+5 calculation: |
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1030 // 6 = ascent to first stop (same as 2), except continue to 7 |
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1031 // 7 = same as 1, except loop to 7. |
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1032 // |
167 | 1033 static void calc_hauptroutine(void) |
116 | 1034 { |
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1035 static unsigned char backup_gas_used = 0; |
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1036 static unsigned char backup_gas_depth = 0; |
186 | 1037 |
711
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1038 calc_hauptroutine_data_input(); |
116 | 1039 |
711
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1040 calc_hauptroutine_update_tissues(); |
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1041 calc_gradient_factor(); |
116 | 1042 |
711
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1043 // toggle between calculation for nullzeit (bottom time), |
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1044 // deco stops |
167 | 1045 // and more deco stops (continue) |
697 | 1046 switch( char_O_deco_status ) |
711
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1047 { |
186 | 1048 case 3: //---- At surface: start a new dive ------------------------------ |
711
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1049 clear_deco_table(); |
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1050 copy_deco_table(); |
743 | 1051 int_O_ascenttime = 0; // Reset TTS. |
711
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1052 int_O_extra_ascenttime = 0; |
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1053 char_O_nullzeit = 0; // Reset bottom time. |
278 | 1054 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
201 | 1055 |
217 | 1056 // Values that should be reset just once for the full real dive. |
1057 // This is used to record the lowest stop for the whole dive, | |
1058 // Including ACCROSS all simulated ascent. | |
695 | 1059 low_depth = 0.0; |
567 | 1060 locked_GF_step = 0.0; |
217 | 1061 |
1062 // Reset gas switch history. | |
241 | 1063 backup_gas_used = sim_gas_last_used = 0; |
1064 backup_gas_depth = sim_gas_last_depth = 0; | |
203 | 1065 sim_dive_mins = 0; |
1066 break; | |
186 | 1067 |
167 | 1068 case 0: //---- bottom time ----------------------------------------------- |
312
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1069 default: |
509 | 1070 gas_switch_find_current(); // Lookup for current gas & time. |
1071 gas_switch_set(); // setup calc_ratio's | |
1072 | |
711
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1073 calc_nullzeit(); |
534
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1074 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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1075 { |
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1076 char_O_deco_status = 0; // YES: recalc ndl next time. |
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1077 clear_deco_table(); // Also clear stops ! |
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1078 copy_deco_table(); |
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1079 char_O_deco_last_stop = 0; // And last stop (OSTC menu anim) |
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1080 } |
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|
1081 else |
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1082 char_O_deco_status = 2; // NO: calc ascent next time. |
711
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1083 break; |
186 | 1084 |
1085 case 2: //---- Simulate ascent to first stop ----------------------------- | |
312
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1086 case 6: // @+5min variation |
203 | 1087 // Check proposed gas at begin of ascent simulation |
247
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1088 sim_dive_mins = int_I_divemins; // Init current time. |
241 | 1089 |
711
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1090 gas_switch_find_current(); // Lookup for current gas & time. |
532 | 1091 gas_switch_set(); // setup calc_ratio's |
1092 | |
247
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1093 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1094 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
186 | 1095 |
711
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|
1096 sim_ascent_to_first_stop(); |
201 | 1097 |
312
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1098 // Calc stops next time (deco or gas switch). |
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1099 char_O_deco_status = 1 | ( char_O_deco_status & 4 ); |
711
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1100 break; |
169
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1101 |
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1102 case 1: //---- Simulate stops -------------------------------------------- |
312
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1103 case 5: // @+5 variation. |
711
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1104 calc_hauptroutine_calc_deco(); |
186 | 1105 |
1106 // If simulation is finished, restore the GF low reference, so that | |
1107 // next ascent simulation is done from the current depth: | |
711
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1108 if( (char_O_deco_status & 3) == 0 ) |
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|
1109 { |
241 | 1110 sim_gas_last_used = backup_gas_used; |
1111 sim_gas_last_depth = backup_gas_depth; | |
186 | 1112 } |
711
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|
1113 break; |
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1114 } |
167 | 1115 |
116 | 1116 } |
1117 | |
167 | 1118 ////////////////////////////////////////////////////////////////////////////// |
1119 // calc_hauptroutine_data_input | |
1120 // | |
1121 // Reset all C-code dive parameters from their ASM-code values. | |
1122 // Detect gas change condition. | |
1123 // | |
116 | 1124 void calc_hauptroutine_data_input(void) |
1125 { | |
203 | 1126 overlay short int_temp; |
511
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509
diff
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|
1127 overlay unsigned char g; |
711
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1128 |
197 | 1129 pres_respiration = int_I_pres_respiration * 0.001; |
1130 pres_surface = int_I_pres_surface * 0.001; | |
1131 N2_ratio = char_I_N2_ratio * 0.01; | |
1132 He_ratio = char_I_He_ratio * 0.01; | |
1133 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
116 | 1134 |
126 | 1135 // ____________________________________________________ |
1136 // | |
1137 // _____________ G A S _ C H A N G E S ________________ | |
1138 // ____________________________________________________ | |
711
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1139 |
212 | 1140 // Keep a margin of 150mbar = 1.50m |
1141 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
1142 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
711
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|
1143 |
203 | 1144 // 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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|
1145 for(g=0; g < NUM_GAS; ++g) |
126 | 1146 { |
511
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|
1147 deco_gas_change[g] = 0; |
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|
1148 if(char_I_deco_gas_change[g]) |
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1149 if( int_temp > 100 *(short)char_I_deco_gas_change[g] ) |
711
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|
1150 deco_gas_change[g] = char_I_deco_gas_change[g]; |
126 | 1151 } |
116 | 1152 |
197 | 1153 const_ppO2 = char_I_const_ppO2 * 0.01; |
1154 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
1155 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
1156 GF_low = char_I_GF_Low_percentage * 0.01; | |
1157 GF_high = char_I_GF_High_percentage * 0.01; | |
126 | 1158 GF_delta = GF_high - GF_low; |
116 | 1159 } |
1160 | |
167 | 1161 ////////////////////////////////////////////////////////////////////////////// |
171 | 1162 // |
1163 // | |
116 | 1164 void calc_hauptroutine_update_tissues(void) |
1165 { | |
197 | 1166 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
1167 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
782
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|
1168 assert( (N2_ratio + He_ratio) <= 1.00 ); |
237 | 1169 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
197 | 1170 |
711
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|
1171 pres_diluent = pres_respiration; |
307 | 1172 if( char_I_const_ppO2 != 0 ) // new in v.101 |
186 | 1173 { |
322 | 1174 overlay float flush_ppO2 = pres_respiration * (1.0 - N2_ratio - He_ratio); |
711
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|
1175 |
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diff
changeset
|
1176 pres_diluent -= const_ppO2; // new in v.101 |
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diff
changeset
|
1177 pres_diluent /= N2_ratio + He_ratio; // new in v.101 |
321 | 1178 if( pres_diluent < 0.0 ) |
1179 pres_diluent = 0.0; | |
711
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diff
changeset
|
1180 if( pres_diluent > pres_respiration ) // new in v.101 |
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diff
changeset
|
1181 pres_diluent = pres_respiration; // new in v.101 |
307 | 1182 |
711
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diff
changeset
|
1183 char_O_diluent = (unsigned char)(pres_diluent/pres_respiration*100.0 + 0.5); |
322 | 1184 |
711
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diff
changeset
|
1185 if( flush_ppO2 > 2.545) flush_ppO2 = 2.55; |
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parents:
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diff
changeset
|
1186 if( flush_ppO2 < 0.0 ) flush_ppO2 = 0.0; |
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parents:
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diff
changeset
|
1187 char_O_flush_ppO2 = (unsigned char)(flush_ppO2*100.0 + 0.5); |
186 | 1188 } |
307 | 1189 |
310
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Fix EAD/END display (not mm, m with a trailling space)
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diff
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1190 if( pres_diluent > ppWater ) // new in v.101 |
711
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JeanDo <jd.gascuel@free.fr>
parents:
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diff
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|
1191 { |
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diff
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|
1192 overlay float EAD, END; |
307 | 1193 |
310
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Fix EAD/END display (not mm, m with a trailling space)
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307
diff
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|
1194 ppN2 = N2_ratio * (pres_diluent - ppWater); // changed in v.101 |
711
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parents:
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diff
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|
1195 ppHe = He_ratio * (pres_diluent - ppWater); // changed in v.101 |
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JeanDo <jd.gascuel@free.fr>
parents:
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diff
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|
1196 |
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parents:
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diff
changeset
|
1197 // EAD : Equivalent Air Dive. Equivalent depth for the same N2 level |
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parents:
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diff
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|
1198 // with plain air. |
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parents:
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diff
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|
1199 // ppN2 = 79% * (P_EAD - ppWater) |
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parents:
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diff
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|
1200 // EAD = (P_EAD - Psurface) * 10 |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1201 // ie: EAD = (ppN2 / 0.7902 + ppWater -Psurface) * 10 |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1202 EAD = (ppN2 / 0.7902 + ppWater - pres_surface) * BAR_TO_METER; |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1203 if( EAD < 0.0 || EAD > 245.5 ) EAD = 0.0; |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
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|
1204 char_O_EAD = (unsigned char)(EAD + 0.5); |
307 | 1205 |
711
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parents:
710
diff
changeset
|
1206 // END : Equivalent Narcotic Dive. |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1207 // Here we count O2 as narcotic too. Hence everything but helium (has a narcosis factor of |
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JeanDo <jd.gascuel@free.fr>
parents:
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diff
changeset
|
1208 // 0.23 btw). Hence the formula becomes: |
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JeanDo <jd.gascuel@free.fr>
parents:
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diff
changeset
|
1209 // END * BarPerMeter * (1.0 - 0.0) - ppWater + Psurface == Pambient - ppHe - ppWater |
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JeanDo <jd.gascuel@free.fr>
parents:
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diff
changeset
|
1210 // ie: END = (Pambient - ppHe - Psurface) * BAR_TO_METER |
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diff
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|
1211 // |
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diff
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|
1212 // Source cited: |
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parents:
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diff
changeset
|
1213 // The Physiology and Medicine of Diving by Peter Bennett and David Elliott, |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1214 // 4th edition, 1993, W.B.Saunders Company Ltd, London. |
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1215 END = (pres_respiration - ppHe - pres_surface) * BAR_TO_METER; |
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JeanDo <jd.gascuel@free.fr>
parents:
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diff
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|
1216 if( END < 0.0 || END > 245.5 ) END = 0.0; |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1217 char_O_END = (unsigned char)(END + 0.5); |
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parents:
710
diff
changeset
|
1218 } |
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parents:
710
diff
changeset
|
1219 else // new in v.101 |
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parents:
710
diff
changeset
|
1220 { |
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JeanDo <jd.gascuel@free.fr>
parents:
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diff
changeset
|
1221 ppN2 = 0.0; // new in v.101 |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1222 ppHe = 0.0; // new in v.101 |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1223 char_O_EAD = char_O_END = 0; |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1224 } |
116 | 1225 |
711
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1226 if(!char_I_step_is_1min) |
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1227 calc_tissue(0); |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1228 else |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1229 calc_tissue(1); |
186 | 1230 |
192 | 1231 // Calc limit for surface, ie. GF_high. |
258 | 1232 calc_limit(); |
186 | 1233 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1234 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1235 int_O_gtissue_press = (short)((pres_tissue_N2[char_O_gtissue_no] + pres_tissue_He[char_O_gtissue_no]) * 1000); |
171 | 1236 } |
1237 | |
116 | 1238 |
167 | 1239 ////////////////////////////////////////////////////////////////////////////// |
169
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diff
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|
1240 // Compute stops. |
711
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minor cleanups for CNS/NOAA bugfix.
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parents:
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diff
changeset
|
1241 // |
169
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diff
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|
1242 // Note: because this can be very long, break on 16 iterations, and set state |
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168
diff
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|
1243 // to 0 when finished, or to 1 when needing to continue. |
334
4ccdc72ec0e5
BUGFIX minor error in gas-switch algo (spurious surface decostop rarely added).
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326
diff
changeset
|
1244 // 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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252
diff
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|
1245 // break the loop when total time > 512msec. |
169
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diff
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|
1246 // |
116 | 1247 void calc_hauptroutine_calc_deco(void) |
1248 { | |
169
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diff
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|
1249 overlay unsigned char loop; |
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diff
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|
1250 |
711
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parents:
710
diff
changeset
|
1251 for(loop = 0; loop < 16; ++loop) |
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parents:
710
diff
changeset
|
1252 { |
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parents:
710
diff
changeset
|
1253 // Limit loops to 512ms, using the RTC timer 3: |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1254 if( tmr3() & (512*32) ) |
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minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
1255 break; |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1256 |
755 | 1257 if( calc_nextdecodepth() ) |
757 | 1258 { |
241 | 1259 if( temp_depth_limit == 0 ) |
1260 goto Surface; | |
116 | 1261 |
241 | 1262 //---- We hit a stop at temp_depth_limit --------------------- |
317 | 1263 temp_deco = temp_depth_limit * METER_TO_BAR // Convert to relative bar, |
757 | 1264 + pres_surface; // To absolute. |
471 | 1265 if( !update_deco_table() ) // Adds a one minute stops. |
1266 goto Surface; // Deco table full: abort... | |
241 | 1267 } |
1268 else | |
1269 { | |
1270 //---- No stop ----------------------------------------------- | |
317 | 1271 temp_deco -= (10*METER_TO_BAR); // Ascend 10m, no wait. |
169
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diff
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|
1272 |
241 | 1273 //---- Finish computations once surface is reached ----------- |
1274 if( temp_deco <= pres_surface ) | |
1275 { | |
1276 Surface: | |
471 | 1277 if( char_O_deco_status == 1 ) // Don't in @+5min variant. |
711
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parents:
710
diff
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|
1278 copy_deco_table(); |
312
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diff
changeset
|
1279 |
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diff
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|
1280 calc_ascenttime(); |
471 | 1281 char_O_deco_status = 0; // calc nullzeit next time. |
1282 char_O_deco_last_stop = 0; // Surface reached (to animate menu) | |
755 | 1283 return; |
241 | 1284 } |
1285 } | |
1286 //---- Then update tissue -------------------------------------------- | |
203 | 1287 sim_dive_mins++; // Advance simulated time by 1 minute. |
241 | 1288 gas_switch_set(); // Apply any simulated gas change, once validated. |
711
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1289 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
192 | 1290 sim_tissue(1); // Simulate compartiments for 1 minute. |
711
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diff
changeset
|
1291 } |
169
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diff
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|
1292 |
711
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parents:
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diff
changeset
|
1293 // Surface not reached, need more stops... for menu animation. |
278 | 1294 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
116 | 1295 } |
1296 | |
167 | 1297 ////////////////////////////////////////////////////////////////////////////// |
169
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diff
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|
1298 // Simulation ascention to first deco stop. |
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diff
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|
1299 // |
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diff
changeset
|
1300 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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168
diff
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|
1301 // there is no need to break on more that 16 iterations |
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168
diff
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|
1302 // (or we are already in deep shit). |
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diff
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|
1303 // |
334
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326
diff
changeset
|
1304 // 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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|
1305 // Output: temp_deco |
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diff
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|
1306 // |
312
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310
diff
changeset
|
1307 // if char_O_deco_status indicate @+5 variant, add extra time at current depth, |
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diff
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|
1308 // before ascent. |
169
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diff
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|
1309 void sim_ascent_to_first_stop(void) |
116 | 1310 { |
698 | 1311 overlay unsigned char fast = 1; // 1min or 2sec steps. |
1312 | |
171 | 1313 update_startvalues(); |
169
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diff
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|
1314 clear_deco_table(); |
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|
1315 |
711
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|
1316 temp_deco = pres_respiration; // Starts from current real depth. |
169
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|
1317 |
312
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diff
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|
1318 // Are we doing the special @+5min variation ? |
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|
1319 if(char_O_deco_status & 4) |
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|
1320 sim_extra_time(); |
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|
1321 |
241 | 1322 //---- Loop until first stop, gas switch, or surface is reached ---------- |
711
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diff
changeset
|
1323 for(;;) |
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diff
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|
1324 { |
461 | 1325 overlay float old_deco = temp_deco; // Pamb backup (bars) |
460 | 1326 |
698 | 1327 // Try ascending 1 full minute (fast) or 2sec (!fast): |
1328 if( fast ) | |
1329 temp_deco -= 10*METER_TO_BAR; // 1 min, at 10m/min. ~ 1bar. | |
1330 else | |
1331 temp_deco -= (10.0/30.0)*METER_TO_BAR; // 2sec at 10m/min. | |
1332 | |
461 | 1333 if( temp_deco < pres_surface ) // But don't go over surface. |
1334 temp_deco = pres_surface; | |
203 | 1335 |
461 | 1336 // Recompute sim_lead_tissue_limit at GF_low (deepest stop), because |
1337 // one minute passed. | |
212 | 1338 sim_limit(GF_low); |
1339 | |
1340 // Did we reach deepest remaining stop ? | |
241 | 1341 if( temp_deco < sim_lead_tissue_limit ) |
212 | 1342 { |
461 | 1343 temp_deco = old_deco; // Restore last correct depth, |
698 | 1344 |
1345 if( fast ) | |
1346 { | |
1347 fast = 0; // Retry with 2sec steps. | |
1348 continue; | |
1349 } | |
1350 else | |
1351 break; // Done... | |
212 | 1352 } |
1353 | |
203 | 1354 // Did we reach surface ? |
460 | 1355 // NOTE: we should round BEFORE checking surface is reached. |
461 | 1356 temp_depth_limit = (unsigned char)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
1357 if( temp_depth_limit == 0 ) | |
203 | 1358 { |
1359 temp_deco = pres_surface; // Yes: finished ! | |
1360 break; | |
1361 } | |
169
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|
1362 |
241 | 1363 // Check for gas change below new depth ? |
1364 if( gas_switch_deepest() ) | |
1365 { | |
334
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|
1366 assert( temp_depth_limit > 0); |
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|
1367 |
317 | 1368 temp_deco = temp_depth_limit * METER_TO_BAR + pres_surface; |
212 | 1369 break; |
241 | 1370 } |
171 | 1371 |
698 | 1372 if( fast ) |
1373 sim_dive_mins++; // Advance simulated time by 1 minute. | |
241 | 1374 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
698 | 1375 sim_tissue(fast); // and update tissues for 1 min. |
711
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|
1376 } |
167 | 1377 } |
116 | 1378 |
167 | 1379 ////////////////////////////////////////////////////////////////////////////// |
312
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|
1380 // Simulation extra time at the current depth. |
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|
1381 // |
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|
1382 // This routine is used for @+5min feature. |
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|
1383 void sim_extra_time(void) |
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|
1384 { |
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|
1385 overlay unsigned char extra = read_custom_function(58); |
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|
1386 do { |
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|
1387 sim_dive_mins++; // Advance simulated time by 1 minute. |
711
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diff
changeset
|
1388 sim_tissue(1); // and update tissues for 1 min. |
312
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1389 } while( --extra != 0 ); |
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1390 } |
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1391 |
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1392 ////////////////////////////////////////////////////////////////////////////// |
167 | 1393 // calc_tissue |
1394 // | |
116 | 1395 // optimized in v.101 |
167 | 1396 // |
184 | 1397 static void calc_tissue(PARAMETER unsigned char period) |
116 | 1398 { |
251 | 1399 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
1400 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
236 | 1401 |
338 | 1402 for (ci=0;ci<NUM_COMP;ci++) |
126 | 1403 { |
258 | 1404 read_buhlmann_times(period); // 2 sec or 1 min period. |
116 | 1405 |
126 | 1406 // N2 |
339 | 1407 temp_tissue = (ppN2 - pres_tissue_N2[ci]) * var_N2_e; |
126 | 1408 temp_tissue_safety(); |
339 | 1409 pres_tissue_N2[ci] += temp_tissue; |
165 | 1410 |
126 | 1411 // He |
339 | 1412 temp_tissue = (ppHe - pres_tissue_He[ci]) * var_He_e; |
126 | 1413 temp_tissue_safety(); |
339 | 1414 pres_tissue_He[ci] += temp_tissue; |
192 | 1415 } |
167 | 1416 } |
116 | 1417 |
167 | 1418 ////////////////////////////////////////////////////////////////////////////// |
192 | 1419 // calc_limit |
167 | 1420 // |
192 | 1421 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
167 | 1422 // |
258 | 1423 static void calc_limit(void) |
167 | 1424 { |
192 | 1425 char_O_gtissue_no = 255; |
1426 calc_lead_tissue_limit = 0.0; | |
1427 | |
338 | 1428 for(ci=0; ci<NUM_COMP;ci++) |
192 | 1429 { |
339 | 1430 overlay float N2 = pres_tissue_N2[ci]; |
1431 overlay float He = pres_tissue_He[ci]; | |
293
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1432 overlay float p = N2 + He; |
192 | 1433 |
258 | 1434 read_buhlmann_coefficients(); |
293
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1435 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1436 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
116 | 1437 |
192 | 1438 // Apply the Eric Baker's varying gradient factor correction. |
1439 // Note: the correction factor depends both on GF and b, | |
1440 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1441 // so that can change who is the leading gas... | |
1442 // Note: Also depends of the GF. So the calcul is different for | |
1443 // GF_low, current GF, or GF_high... | |
1444 // *BUT* calc_tissue() is used to compute bottom time, | |
1445 // hence what would happend at surface, | |
1446 // hence at GF_high. | |
509 | 1447 if( char_I_deco_model != 0 ) |
258 | 1448 p = ( p - var_N2_a * GF_high) * var_N2_b |
1449 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
192 | 1450 else |
1451 p = (p - var_N2_a) * var_N2_b; | |
258 | 1452 if( p < 0.0 ) p = 0.0; |
192 | 1453 |
1454 if( p > calc_lead_tissue_limit ) | |
1455 { | |
1456 char_O_gtissue_no = ci; | |
1457 calc_lead_tissue_limit = p; | |
1458 } | |
1459 } | |
197 | 1460 |
338 | 1461 assert( char_O_gtissue_no < NUM_COMP ); |
197 | 1462 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); |
167 | 1463 } |
1464 | |
1465 ////////////////////////////////////////////////////////////////////////////// | |
1466 // calc_nullzeit | |
1467 // | |
1468 // calculates the remaining bottom time | |
1469 // | |
511
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1470 // NOTE: Erik Baker's closed formula works for Nitroxes. Trimix adds a second |
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1471 // exponential term to the M-value equation, making it impossible to |
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1472 // invert... So we have to make a fast-simu until we find a better way. |
509 | 1473 // |
1474 // Input: pres_respiration | |
1475 // Output: char_O_nullzeit | |
167 | 1476 // |
1477 static void calc_nullzeit(void) | |
1478 { | |
511
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1479 //---- Compute ppN2 and ppHe --------------------------------------------- |
509 | 1480 temp_deco = pres_respiration; |
1481 sim_alveolar_presures(); | |
167 | 1482 |
509 | 1483 char_O_nullzeit = 240; |
1484 for(ci=0; ci<NUM_COMP; ci++) | |
1485 { | |
511
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1486 //---- Read A/B values and loading factor for N2 and He -------------- |
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1487 overlay float tN2 = pres_tissue_N2[ci]; |
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1488 overlay float tHe = pres_tissue_He[ci]; |
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1489 overlay float t = tN2 + tHe; |
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1490 overlay unsigned char ndl; |
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1491 overlay unsigned char period = 10; |
192 | 1492 |
509 | 1493 read_buhlmann_coefficients(); |
511
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1494 read_buhlmann_times(2); // Starts with a 10min period. |
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1495 |
511
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1496 //---- Simulate for that tissue -------------------------------------- |
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1497 // NOTE: No need to simulate for longuer than the already found NDL. |
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1498 for(ndl=0; ndl<char_O_nullzeit;) |
509 | 1499 { |
511
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1500 //---- Compute updated mix M-value at surface |
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1501 overlay float a = (var_N2_a * tN2 + var_He_a * tHe) / t; |
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1502 overlay float b = (var_N2_b * tN2 + var_He_b * tHe) / t; |
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1503 overlay float M0 = (a + pres_surface/b); |
116 | 1504 |
511
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1505 //---- Add 10min/1min to N2/He tissues |
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1506 overlay float dTN2 = (ppN2 - tN2) * var_N2_e; |
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1507 overlay float dTHe = (ppHe - tHe) * var_He_e; |
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1508 |
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1509 //---- Apply security margin when using the non-GF model |
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1510 if( char_I_deco_model == 0 ) |
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1511 { |
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1512 dTN2 *= float_saturation_multiplier; |
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1513 dTHe *= float_saturation_multiplier; |
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1514 } |
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1515 else // Or GF-based model |
509 | 1516 M0 = GF_high * (M0 - pres_surface) + pres_surface; |
167 | 1517 |
511
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1518 //---- Simulate off-gasing while going to surface |
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1519 // TODO ! |
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1520 // dTN2 -= exp( ... ascent time ... ppN2...) |
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1521 // dTHe -= exp( ... ascent time ... ppHe...) |
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1522 |
534
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1523 //---- Ok now, and still ok to surface after 1 or 10 minutes ? |
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1524 if( (t <= M0) && (t + dTN2 + dTHe <= M0) ) |
509 | 1525 { |
511
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1526 tN2 += dTN2; // YES: apply gas loadings, |
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1527 tHe += dTHe; |
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1528 t = tN2 + tHe; |
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1529 ndl += period; // increment NDL, |
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1530 continue; // and loop. |
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1531 } |
116 | 1532 |
511
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1533 //---- Should we retry with smaller steps ? |
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1534 if( period == 10 ) |
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1535 { |
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1536 read_buhlmann_times(1); // 1min coefs. |
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1537 period = 1; |
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1538 continue; |
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1539 } |
167 | 1540 |
511
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1541 //---- ELSE make a linear approx for the last minute |
524 | 1542 // Usefull to have a meaningfull rounding of NDL. |
1543 // But ONLY it positive (negativ casted to unsigned is bad). | |
1544 if( M0 > t ) | |
1545 ndl += (unsigned char)(0.5f + (M0-t)/(dTN2+dTHe)); | |
511
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1546 break; |
509 | 1547 } |
511
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1548 |
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1549 // Keep the shortest NDL found |
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1550 if( ndl < char_O_nullzeit ) |
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1551 char_O_nullzeit = ndl; |
339 | 1552 } |
167 | 1553 } |
116 | 1554 |
167 | 1555 ////////////////////////////////////////////////////////////////////////////// |
1556 // calc_ascenttime | |
1557 // | |
312
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1558 // Summup ascent from bottom to surface, at 1 bar/min, 1min for last 3 meters, |
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1559 // and all stops. |
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1560 // |
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1561 // Result in int_O_ascenttime, or int_O_extra_ascenttime if in @+5min variant. |
169
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1562 static void calc_ascenttime(void) |
116 | 1563 { |
323 | 1564 overlay unsigned char x; |
1565 overlay unsigned short sum; | |
168 | 1566 |
323 | 1567 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
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1568 overlay float ascent = pres_respiration - pres_surface + 0.7; |
323 | 1569 if (ascent < 0.0) |
1570 ascent = 0.0; | |
1571 sum = (unsigned short)(ascent + 0.99); | |
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1572 |
338 | 1573 for(x=0; x<NUM_STOPS && internal_deco_depth[x]; x++) |
323 | 1574 sum += (unsigned short)internal_deco_time[x]; |
1575 | |
1576 if( char_O_deco_status == 1 ) | |
1577 int_O_ascenttime = sum; | |
126 | 1578 else |
323 | 1579 int_O_extra_ascenttime = sum; |
167 | 1580 } |
116 | 1581 |
167 | 1582 ////////////////////////////////////////////////////////////////////////////// |
1583 // update_startvalues | |
1584 // | |
116 | 1585 // updated in v.102 |
167 | 1586 // |
116 | 1587 void update_startvalues(void) |
1588 { | |
167 | 1589 overlay unsigned char x; |
116 | 1590 |
201 | 1591 // Start ascent simulation with current tissue partial pressures. |
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1592 for(x=0; x<NUM_COMP; x++) |
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1593 { |
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1594 sim_pres_tissue_N2[x] = pres_tissue_N2[x]; |
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1595 sim_pres_tissue_He[x] = pres_tissue_He[x]; |
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1596 } |
197 | 1597 |
201 | 1598 // No leading tissue (yet) for this ascent simulation. |
197 | 1599 sim_lead_tissue_limit = 0.0; |
1600 sim_lead_tissue_no = 255; | |
167 | 1601 } |
116 | 1602 |
167 | 1603 ////////////////////////////////////////////////////////////////////////////// |
192 | 1604 // sim_tissue |
167 | 1605 // |
116 | 1606 // optimized in v.101 |
167 | 1607 // |
1608 // Function very simular to calc_tissue, but: | |
1609 // + Use a 1min or 10min period. | |
1610 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
184 | 1611 static void sim_tissue(PARAMETER unsigned char period) |
116 | 1612 { |
251 | 1613 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
1614 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
236 | 1615 |
338 | 1616 for(ci=0; ci<NUM_COMP; ci++) |
126 | 1617 { |
258 | 1618 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
165 | 1619 |
126 | 1620 // N2 |
339 | 1621 temp_tissue = (ppN2 - sim_pres_tissue_N2[ci]) * var_N2_e; |
126 | 1622 temp_tissue_safety(); |
339 | 1623 sim_pres_tissue_N2[ci] += temp_tissue; |
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1624 |
126 | 1625 // He |
339 | 1626 temp_tissue = (ppHe - sim_pres_tissue_He[ci]) * var_He_e; |
126 | 1627 temp_tissue_safety(); |
339 | 1628 sim_pres_tissue_He[ci] += temp_tissue; |
192 | 1629 } |
167 | 1630 } |
116 | 1631 |
167 | 1632 ////////////////////////////////////////////////////////////////////////////// |
192 | 1633 // sim_limit() |
1634 // | |
1635 // New in v.111 | |
1636 // | |
1637 // Function separated from sim_tissue() to allow recomputing limit on | |
1638 // different depth, because it depends on current gradient factor. | |
167 | 1639 // |
192 | 1640 static void sim_limit(PARAMETER float GF_current) |
116 | 1641 { |
212 | 1642 assert( 0.0 < GF_current && GF_current <= 1.0f); |
1643 | |
192 | 1644 sim_lead_tissue_limit = 0.0; |
212 | 1645 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
192 | 1646 |
338 | 1647 for(ci=0; ci<NUM_COMP; ci++) |
192 | 1648 { |
339 | 1649 overlay float N2 = sim_pres_tissue_N2[ci]; |
1650 overlay float He = sim_pres_tissue_He[ci]; | |
241 | 1651 overlay float p = N2 + He; |
192 | 1652 |
258 | 1653 read_buhlmann_coefficients(); |
241 | 1654 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
1655 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
192 | 1656 |
1657 // Apply the Eric Baker's varying gradient factor correction. | |
1658 // Note: the correction factor depends both on GF and b, | |
1659 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1660 // so that can change who is the leading gas... | |
1661 // Note: Also depends of the GF_current... | |
509 | 1662 if( char_I_deco_model != 0 ) |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1663 p = ( p - var_N2_a * GF_current) |
302 | 1664 / (GF_current / var_N2_b + 1.0 - GF_current); |
192 | 1665 else |
1666 p = (p - var_N2_a) * var_N2_b; | |
1667 | |
1668 if( p > sim_lead_tissue_limit ) | |
1669 { | |
1670 sim_lead_tissue_no = ci; | |
1671 sim_lead_tissue_limit = p; | |
1672 } | |
1673 } // for ci | |
197 | 1674 |
338 | 1675 assert( sim_lead_tissue_no < NUM_COMP ); |
237 | 1676 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
167 | 1677 } |
116 | 1678 |
167 | 1679 ////////////////////////////////////////////////////////////////////////////// |
169
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168
diff
changeset
|
1680 // clear_deco_table |
167 | 1681 // |
1682 // unchanged in v.101 | |
1683 // | |
169
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Merge decoplan display for both GF and Buhlmann models.
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parents:
168
diff
changeset
|
1684 static void clear_deco_table(void) |
116 | 1685 { |
169
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1686 overlay unsigned char x; |
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
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|
1687 |
338 | 1688 for(x=0; x<NUM_STOPS; ++x) |
169
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1689 { |
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1690 internal_deco_time [x] = 0; |
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1691 internal_deco_depth[x] = 0; |
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1692 } |
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1693 } |
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1694 |
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1695 ////////////////////////////////////////////////////////////////////////////// |
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168
diff
changeset
|
1696 // update_deco_table |
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168
diff
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|
1697 // |
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168
diff
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|
1698 // Add 1 min to current stop. |
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168
diff
changeset
|
1699 // |
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1700 // Inputs: |
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Merge decoplan display for both GF and Buhlmann models.
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parents:
168
diff
changeset
|
1701 // temp_depth_limit = stop's depth, in meters. |
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diff
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|
1702 // In/Out: |
275
4310ab395dbe
Keep low_depth in float 32bits (w/o rounding) for a better stability.
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270
diff
changeset
|
1703 // internal_deco_depth[] : depth (in metres) of each stops. |
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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|
1704 // internal_deco_time [] : time (in minutes) of each stops. |
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parents:
168
diff
changeset
|
1705 // |
471 | 1706 static unsigned char update_deco_table() |
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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|
1707 { |
192 | 1708 overlay unsigned char x; |
247
ce869aad7440
BUGFIX Count gas switch delay down during ascent (bug bb26)
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parents:
241
diff
changeset
|
1709 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
ce869aad7440
BUGFIX Count gas switch delay down during ascent (bug bb26)
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parents:
241
diff
changeset
|
1710 assert( temp_depth_limit > 0 ); // No stop at surface... |
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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|
1711 |
338 | 1712 for(x=0; x<NUM_STOPS; ++x) |
192 | 1713 { |
212 | 1714 // Make sure deco-stops are recorded in order: |
766
3b1af9891019
BUGFIX: CNS calculation in decoplan should track gas (no marked changes anymore)
JeanDo
parents:
757
diff
changeset
|
1715 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); |
212 | 1716 |
766
3b1af9891019
BUGFIX: CNS calculation in decoplan should track gas (no marked changes anymore)
JeanDo
parents:
757
diff
changeset
|
1717 if( internal_deco_depth[x]== temp_depth_limit ) |
192 | 1718 { |
1719 // Do not overflow (max 255') | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1720 if( internal_deco_time[x] < 255 ) |
192 | 1721 { |
1722 internal_deco_time[x]++; | |
471 | 1723 return 1; |
192 | 1724 } |
1725 // But store extra in the next stop... | |
169
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168
diff
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|
1726 } |
192 | 1727 |
169
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168
diff
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|
1728 if( internal_deco_depth[x] == 0 ) |
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diff
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|
1729 { |
192 | 1730 internal_deco_depth[x] = temp_depth_limit; |
279
8514588eb6a2
Mark gas-switch stops for decoplans, displayed in yellow.
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278
diff
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|
1731 |
169
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diff
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|
1732 internal_deco_time[x] = 1; |
757 | 1733 internal_deco_gas[x] = sim_gas_last_used; |
471 | 1734 return 1; |
169
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diff
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|
1735 } |
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diff
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|
1736 } |
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diff
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|
1737 |
192 | 1738 // Can't store stops at more than 96m. |
1739 // Or stops at less that 3m too. | |
169
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diff
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|
1740 // Just do nothing with that... |
471 | 1741 return 0; |
167 | 1742 } |
116 | 1743 |
167 | 1744 ////////////////////////////////////////////////////////////////////////////// |
1745 // calc_gradient_factor | |
1746 // | |
165 | 1747 // optimized in v.101 (var_N2_a) |
116 | 1748 // new code in v.102 |
167 | 1749 // |
1750 static void calc_gradient_factor(void) | |
116 | 1751 { |
197 | 1752 overlay float gf; |
339 | 1753 overlay float N2 = pres_tissue_N2[char_O_gtissue_no]; |
1754 overlay float He = pres_tissue_He[char_O_gtissue_no]; | |
237 | 1755 |
338 | 1756 assert( char_O_gtissue_no < NUM_COMP ); |
237 | 1757 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
197 | 1758 |
711
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1759 // tissue > respiration (currently off-gasing) |
f555590f1419
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parents:
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diff
changeset
|
1760 // GF = 0% when respiration == tissue, ie. bubbles are at equilibrium. |
f555590f1419
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parents:
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diff
changeset
|
1761 // GF = 100% when respiration == limit. |
293
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
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diff
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|
1762 temp_tissue = N2 + He; |
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BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
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diff
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|
1763 if( temp_tissue <= pres_respiration ) |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
1764 gf = 0.0; |
197 | 1765 else |
1766 { | |
293
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
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292
diff
changeset
|
1767 overlay float limit = calc_lead_tissue_limit; |
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BUGFIX char_O_gradient_factor calculation in GF model.
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292
diff
changeset
|
1768 // NOTE: in GF model, calc_lead_tissue_limit include already the |
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BUGFIX char_O_gradient_factor calculation in GF model.
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292
diff
changeset
|
1769 // correction due to gradient factor. To compute the actual |
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BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
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292
diff
changeset
|
1770 // current GF, we need to (re-)compute the raw ambiant-pressure |
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BUGFIX char_O_gradient_factor calculation in GF model.
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292
diff
changeset
|
1771 // limit from the Bühlmann model. |
509 | 1772 if( char_I_deco_model != 0 ) |
293
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BUGFIX char_O_gradient_factor calculation in GF model.
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diff
changeset
|
1773 { |
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BUGFIX char_O_gradient_factor calculation in GF model.
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diff
changeset
|
1774 ci = char_O_gtissue_no; |
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BUGFIX char_O_gradient_factor calculation in GF model.
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diff
changeset
|
1775 read_buhlmann_coefficients(); |
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BUGFIX char_O_gradient_factor calculation in GF model.
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diff
changeset
|
1776 var_N2_a = (var_N2_a * N2 + var_He_a * He) / temp_tissue; |
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BUGFIX char_O_gradient_factor calculation in GF model.
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292
diff
changeset
|
1777 var_N2_b = (var_N2_b * N2 + var_He_b * He) / temp_tissue; |
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BUGFIX char_O_gradient_factor calculation in GF model.
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parents:
292
diff
changeset
|
1778 limit = (temp_tissue - var_N2_a) * var_N2_b; |
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BUGFIX char_O_gradient_factor calculation in GF model.
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parents:
292
diff
changeset
|
1779 } |
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BUGFIX char_O_gradient_factor calculation in GF model.
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diff
changeset
|
1780 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1781 gf = (temp_tissue - pres_respiration) |
293
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1782 / (temp_tissue - limit) |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1783 * 100.0; |
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1784 if( gf > 254.5 ) gf = 255.0; |
197 | 1785 if( gf < 0.0 ) gf = 0.0; |
1786 } | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1787 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
116 | 1788 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1789 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
|
1790 { |
197 | 1791 overlay float rgf; |
1792 | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1793 if( low_depth < 3 ) |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1794 rgf = GF_high; |
197 | 1795 else |
1796 { | |
317 | 1797 overlay float temp1 = low_depth * METER_TO_BAR; |
197 | 1798 overlay float temp2 = pres_respiration - pres_surface; |
186 | 1799 |
197 | 1800 if (temp2 <= 0) |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1801 rgf = GF_high; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1802 else if (temp2 >= temp1) |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1803 rgf = GF_low; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1804 else |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1805 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; |
197 | 1806 } |
186 | 1807 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1808 rgf = gf / rgf; // gf is already in percent |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1809 if( rgf < 0.0 ) rgf = 0.0; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1810 if( rgf > 254.5 ) rgf = 255.0; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1811 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
|
1812 } // calc relative gradient factor |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
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diff
changeset
|
1813 else |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1814 { |
186 | 1815 char_O_relative_gradient_GF = char_O_gradient_factor; |
711
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parents:
710
diff
changeset
|
1816 } |
167 | 1817 } |
116 | 1818 |
167 | 1819 ////////////////////////////////////////////////////////////////////////////// |
1820 // deco_calc_desaturation_time | |
1821 // | |
116 | 1822 // FIXED N2_ratio |
1823 // unchanged in v.101 | |
310
b20fc8c4ac92
Fix EAD/END display (not mm, m with a trailling space)
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parents:
307
diff
changeset
|
1824 // Inputs: int_I_pres_surface, ppWater, char_I_desaturation_multiplier |
233 | 1825 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] |
167 | 1826 // |
116 | 1827 void deco_calc_desaturation_time(void) |
1828 { | |
122
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FIX again reset C data stack and frame pointer when entering C code.
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parents:
116
diff
changeset
|
1829 RESET_C_STACK |
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FIX again reset C data stack and frame pointer when entering C code.
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parents:
116
diff
changeset
|
1830 |
233 | 1831 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
1832 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
1833 | |
237 | 1834 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
233 | 1835 pres_surface = int_I_pres_surface * 0.001; |
310
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Fix EAD/END display (not mm, m with a trailling space)
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parents:
307
diff
changeset
|
1836 ppN2 = N2_ratio * (pres_surface - ppWater); |
126 | 1837 int_O_desaturation_time = 0; |
491
560764da0629
BUGFIX Surface desat factor missing for Interval planning in GF mode.
JeanDo
parents:
490
diff
changeset
|
1838 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
233 | 1839 |
339 | 1840 for(ci=0; ci<NUM_COMP; ci++) |
126 | 1841 { |
251 | 1842 overlay unsigned short desat_time; // For a particular compartiment, in min. |
1843 overlay float temp1; | |
1844 overlay float temp2; | |
1845 overlay float temp3; | |
1846 overlay float temp4; | |
338 | 1847 |
509 | 1848 read_buhlmann_ht(); |
338 | 1849 |
126 | 1850 // saturation_time (for flight) and N2_saturation in multiples of halftime |
1851 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
1852 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
260
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258
diff
changeset
|
1853 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
126 | 1854 // N2 |
339 | 1855 temp1 = 1.05 * ppN2 - pres_tissue_N2[ci]; |
1856 temp2 = ppN2 - pres_tissue_N2[ci]; | |
126 | 1857 if (temp2 >= 0.0) |
233 | 1858 temp1 = 0.0; |
126 | 1859 else |
1860 temp1 = temp1 / temp2; | |
711
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minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
1861 |
251 | 1862 if( 0.0 < temp1 && temp1 < 1.0 ) |
126 | 1863 { |
260
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258
diff
changeset
|
1864 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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258
diff
changeset
|
1865 // minus because log is negative. |
bde83cac971f
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258
diff
changeset
|
1866 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
509 | 1867 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
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258
diff
changeset
|
1868 |
126 | 1869 } |
1870 else | |
1871 { | |
233 | 1872 temp1 = 0.0; |
1873 temp2 = 0.0; | |
126 | 1874 } |
116 | 1875 |
126 | 1876 // He |
339 | 1877 temp3 = 0.1 - pres_tissue_He[ci]; |
126 | 1878 if (temp3 >= 0.0) |
233 | 1879 temp3 = 0.0; |
126 | 1880 else |
339 | 1881 temp3 = - temp3 / pres_tissue_He[ci]; |
601
d1719622111e
Minor LLVM compatibility cleanups.
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parents:
581
diff
changeset
|
1882 |
251 | 1883 if( 0.0 < temp3 && temp3 < 1.0 ) |
711
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parents:
710
diff
changeset
|
1884 { |
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1885 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
1886 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
f555590f1419
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1887 // minus because log is negative |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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1888 temp4 = var_He_ht * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
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1889 } |
126 | 1890 else |
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|
1891 { |
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|
1892 temp3 = 0.0; |
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1893 temp4 = 0.0; |
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|
1894 } |
116 | 1895 |
126 | 1896 // saturation_time (for flight) |
1897 if (temp4 > temp2) | |
203 | 1898 desat_time = (unsigned short)temp4; |
126 | 1899 else |
203 | 1900 desat_time = (unsigned short)temp2; |
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1901 |
251 | 1902 if(desat_time > int_O_desaturation_time) |
1903 int_O_desaturation_time = desat_time; | |
116 | 1904 |
126 | 1905 // N2 saturation in multiples of halftime for display purposes |
339 | 1906 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
1907 temp2 = temp2 + 80.0; // set center | |
126 | 1908 if (temp2 < 0.0) |
1909 temp2 = 0.0; | |
1910 if (temp2 > 255.0) | |
1911 temp2 = 255.0; | |
339 | 1912 char_O_tissue_N2_saturation[ci] = (char)temp2; |
233 | 1913 |
126 | 1914 // He saturation in multiples of halftime for display purposes |
339 | 1915 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
1916 temp4 = temp4 + 80.0; // set center | |
126 | 1917 if (temp4 < 0.0) |
1918 temp4 = 0.0; | |
1919 if (temp4 > 255.0) | |
1920 temp4 = 255.0; | |
339 | 1921 char_O_tissue_He_saturation[ci] = (char)temp4; |
126 | 1922 } // for |
167 | 1923 } |
116 | 1924 |
167 | 1925 ////////////////////////////////////////////////////////////////////////////// |
1926 // calc_wo_deco_step_1_min | |
1927 // | |
116 | 1928 // FIXED N2 Ratio |
1929 // optimized in v.101 (...saturation_multiplier) | |
1930 // desaturation slowed down to 70,42% | |
167 | 1931 // |
1932 static void calc_wo_deco_step_1_min(void) | |
116 | 1933 { |
251 | 1934 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
1935 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
1936 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
1937 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
1938 | |
126 | 1939 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
368 | 1940 pres_respiration = pres_surface = int_I_pres_surface * 0.001; |
1941 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
200 | 1942 ppHe = 0.0; |
491
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1943 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
197 | 1944 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
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1945 |
339 | 1946 calc_tissue(1); // update the pressure in the tissues N2/He in accordance with the new ambient pressure |
711
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1947 |
169
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1948 clear_deco_table(); |
200 | 1949 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
126 | 1950 char_O_nullzeit = 0; |
168 | 1951 int_O_ascenttime = 0; |
323 | 1952 int_O_extra_ascenttime = 0; |
126 | 1953 calc_gradient_factor(); |
167 | 1954 } |
126 | 1955 |
167 | 1956 ////////////////////////////////////////////////////////////////////////////// |
368 | 1957 // calc_dive_interval |
1958 // | |
1959 // Prepare tissue for delay before the next dive simulation. | |
1960 // | |
1961 // Inputs: char_I_dive_interval == delay before dive (in 10' steps). | |
1962 // Outputs: pres_tissue_N2/He[], CNS_fraction | |
1963 // | |
1964 // Should be protected by deco_push_tissues_to_vault(), | |
1965 // deco_pull_tissues_from_vault() | |
1966 // | |
1967 // desaturation slowed down to 70,42%. | |
1968 // | |
511
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1969 static void calc_dive_interval(void) |
368 | 1970 { |
1971 overlay unsigned char t; | |
491
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1972 overlay unsigned char backup_model; |
368 | 1973 |
1974 //---- Initialize simulation parameters ---------------------------------- | |
1975 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann | |
1976 pres_respiration = pres_surface = int_I_pres_surface * 0.001; | |
1977 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
1978 ppHe = 0.0; | |
491
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1979 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
368 | 1980 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
1981 | |
568 | 1982 // Make sure SURFACE_DESAT_FACTOR is applied: |
491
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1983 backup_model = char_I_deco_model; |
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|
1984 char_I_deco_model = 0; |
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|
1985 |
368 | 1986 //---- Perform simulation ------------------------------------------------ |
1987 for(t=0; t<char_I_dive_interval; ++t) | |
1988 { | |
1989 calc_tissue(2); // period = 10min. | |
1990 CNS_fraction = 0.92587471 * CNS_fraction; // Half-time = 90min: (1/2)^(1/9) | |
1991 } | |
514 | 1992 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
1993 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); | |
711
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|
1994 |
491
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|
1995 //---- Restore model ----------------------------------------------------- |
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|
1996 char_I_deco_model = backup_model; |
368 | 1997 } |
1998 | |
1999 ////////////////////////////////////////////////////////////////////////////// | |
167 | 2000 ////////////////////////////////////////////////////////////////////////////// |
2001 ////////////////////////////////// deco_hash ///////////////////////////////// | |
2002 ////////////////////////////////////////////////////////////////////////////// | |
2003 ////////////////////////////////////////////////////////////////////////////// | |
126 | 2004 |
184 | 2005 #ifndef CROSS_COMPILE |
116 | 2006 void deco_hash(void) |
2007 { | |
167 | 2008 overlay unsigned char md_i, md_j; // Loop index. |
2009 overlay unsigned char md_t; | |
2010 overlay unsigned char md_buffer[16]; | |
2011 overlay unsigned char md_temp; | |
203 | 2012 overlay unsigned short md_pointer; |
167 | 2013 |
122
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diff
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|
2014 RESET_C_STACK |
711
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diff
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|
2015 |
126 | 2016 // init |
164 | 2017 for(md_i=0;md_i<16;md_i++) |
126 | 2018 { |
2019 md_state[md_i] = 0; | |
164 | 2020 char_O_hash[md_i] = 0; |
126 | 2021 } // for md_i 16 |
116 | 2022 |
126 | 2023 _asm |
167 | 2024 movlw 0x01 // md_pi address. |
2025 movwf TBLPTRU,0 | |
2026 movlw 0x7E | |
2027 movwf TBLPTRH,0 | |
2028 movlw 0x00 | |
2029 movwf TBLPTRL,0 | |
126 | 2030 _endasm; |
165 | 2031 md_i = 0; |
2032 do { | |
126 | 2033 _asm |
2034 TBLRDPOSTINC | |
2035 movff TABLAT,md_temp | |
2036 _endasm | |
165 | 2037 md_pi_subst[md_i++] = md_temp; |
2038 } while( md_i != 0 ); | |
2039 | |
126 | 2040 _asm |
167 | 2041 movlw 0x00 |
2042 movwf TBLPTRU,0 | |
2043 movlw 0x00 | |
2044 movwf TBLPTRH,0 | |
2045 movlw 0x00 | |
2046 movwf TBLPTRL,0 | |
126 | 2047 _endasm |
167 | 2048 |
126 | 2049 // cycle buffers |
2050 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
2051 { | |
2052 md_t = 0; | |
2053 for (md_i=0;md_i<16;md_i++) | |
2054 { | |
2055 if(md_pointer == 9) | |
164 | 2056 md_temp = char_O_hash[md_i]; |
126 | 2057 else |
2058 { | |
2059 _asm | |
167 | 2060 TBLRDPOSTINC |
2061 movff TABLAT,md_temp | |
126 | 2062 _endasm |
2063 } // else | |
167 | 2064 |
2065 md_buffer[md_i] = md_temp; | |
186 | 2066 md_state[md_i+16] = md_temp; |
2067 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
126 | 2068 } // for md_i 16 |
711
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diff
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|
2069 |
126 | 2070 for (md_i=0;md_i<18;md_i++) |
2071 { | |
2072 for (md_j=0;md_j<48;md_j++) | |
2073 { | |
167 | 2074 md_state[md_j] ^= md_pi_subst[md_t]; |
126 | 2075 md_t = md_state[md_j]; |
2076 } // for md_j 48 | |
2077 md_t = (unsigned char)(md_t+1); | |
2078 } // for md_i 18 | |
164 | 2079 md_t = char_O_hash[15]; |
711
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diff
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|
2080 |
126 | 2081 for (md_i=0;md_i<16;md_i++) |
2082 { | |
167 | 2083 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
164 | 2084 md_t = char_O_hash[md_i]; |
126 | 2085 } // for md_i 16 |
2086 } // for md_pointer | |
116 | 2087 } // void deco_hash(void) |
184 | 2088 #endif |
116 | 2089 |
167 | 2090 ////////////////////////////////////////////////////////////////////////////// |
2091 // deco_clear_CNS_fraction | |
2092 // | |
116 | 2093 // new in v.101 |
167 | 2094 // |
116 | 2095 void deco_clear_CNS_fraction(void) |
2096 { | |
122
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|
2097 RESET_C_STACK |
237 | 2098 |
126 | 2099 CNS_fraction = 0.0; |
2100 char_O_CNS_fraction = 0; | |
167 | 2101 } |
116 | 2102 |
167 | 2103 ////////////////////////////////////////////////////////////////////////////// |
2104 // deco_calc_CNS_fraction | |
2105 // | |
439
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2106 // Input: char_I_actual_ppO2 : Current condition (in decibars). |
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|
2107 // char_I_step_is_1min : use 1min or 10min steps instead of 2sec. |
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|
2108 // CNS_fraction : velue before period. |
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|
2109 // Output: CNS_fraction, char_O_CNS_fraction |
167 | 2110 // |
116 | 2111 void deco_calc_CNS_fraction(void) |
2112 { | |
711
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diff
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|
2113 overlay float time_factor = 1.0f; |
126 | 2114 RESET_C_STACK |
167 | 2115 |
471 | 2116 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
237 | 2117 assert( char_I_actual_ppO2 > 15 ); |
2118 | |
439
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|
2119 if( char_I_step_is_1min == 1 ) |
292 | 2120 time_factor = 30.0f; |
439
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|
2121 else if( char_I_step_is_1min == 2 ) |
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|
2122 time_factor = 300.0f; |
710 | 2123 //------------------------------------------------------------------------ |
2124 // Don't increase CNS below 0.5 bar, but keep it steady. | |
126 | 2125 if (char_I_actual_ppO2 < 50) |
292 | 2126 ; // no changes |
710 | 2127 //------------------------------------------------------------------------ |
2128 // Below (and including) 1.60 bar | |
711
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diff
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|
2129 else if (char_I_actual_ppO2 < 61) |
710 | 2130 CNS_fraction += time_factor/(-533.07 * char_I_actual_ppO2 + 54000.0); |
711
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diff
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|
2131 else if (char_I_actual_ppO2 < 71) |
710 | 2132 CNS_fraction += time_factor/(-444.22 * char_I_actual_ppO2 + 48600.0); |
711
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parents:
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diff
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|
2133 else if (char_I_actual_ppO2 < 81) |
710 | 2134 CNS_fraction += time_factor/(-355.38 * char_I_actual_ppO2 + 42300.0); |
711
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diff
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|
2135 else if (char_I_actual_ppO2 < 91) |
710 | 2136 CNS_fraction += time_factor/(-266.53 * char_I_actual_ppO2 + 35100.0); |
711
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diff
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|
2137 else if (char_I_actual_ppO2 < 111) |
710 | 2138 CNS_fraction += time_factor/(-177.69 * char_I_actual_ppO2 + 27000.0); |
711
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diff
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|
2139 else if (char_I_actual_ppO2 < 152) |
710 | 2140 CNS_fraction += time_factor/( -88.84 * char_I_actual_ppO2 + 17100.0); |
711
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diff
changeset
|
2141 else if (char_I_actual_ppO2 < 167) |
710 | 2142 CNS_fraction += time_factor/(-222.11 * char_I_actual_ppO2 + 37350.0); |
2143 //------------------------------------------------------------------------ | |
2144 // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity: | |
2145 // J Appl Physiol 92: 248–256, 2002, doi:10.1152/japplphysiol.00434.2001 | |
2146 // Formula (A1) based on value for 1.55 and c=20 | |
2147 // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
711
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diff
changeset
|
2148 else if (char_I_actual_ppO2 < 172) |
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diff
changeset
|
2149 CNS_fraction += time_factor*0.00102; |
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diff
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|
2150 else if (char_I_actual_ppO2 < 177) |
292 | 2151 CNS_fraction += time_factor*0.00136; |
711
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|
2152 else if (char_I_actual_ppO2 < 182) |
292 | 2153 CNS_fraction += time_factor*0.00180; |
711
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|
2154 else if (char_I_actual_ppO2 < 187) |
292 | 2155 CNS_fraction += time_factor*0.00237; |
711
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|
2156 else if (char_I_actual_ppO2 < 192) |
292 | 2157 CNS_fraction += time_factor*0.00310; |
711
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|
2158 else if (char_I_actual_ppO2 < 198) |
292 | 2159 CNS_fraction += time_factor*0.00401; |
711
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|
2160 else if (char_I_actual_ppO2 < 203) |
292 | 2161 CNS_fraction += time_factor*0.00517; |
711
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|
2162 else if (char_I_actual_ppO2 < 233) |
292 | 2163 CNS_fraction += time_factor*0.0209; |
126 | 2164 else |
292 | 2165 CNS_fraction += time_factor*0.0482; // value for 2.5 |
116 | 2166 |
514 | 2167 if( CNS_fraction > 2.5 ) |
439
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2168 CNS_fraction = 2.55; |
514 | 2169 if( CNS_fraction < 0.0 ) |
126 | 2170 CNS_fraction = 0.0; |
2171 | |
443
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2172 char_O_CNS_fraction = (unsigned char)(100.0 * CNS_fraction + 0.5); |
167 | 2173 } |
116 | 2174 |
167 | 2175 ////////////////////////////////////////////////////////////////////////////// |
439
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2176 // deco_calc_CNS_planning |
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|
2177 // |
511
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|
2178 // Compute CNS during predicted ascent. |
488 | 2179 // |
711
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diff
changeset
|
2180 // Note: Needs a call to deco_push_tissues_to_vault(), |
488 | 2181 // deco_pull_tissues_from_vault() to avoid trashing everything... |
2182 // | |
2183 // Input: CNS_fraction, char_O_deco_time[], char_O_deco_depth[] | |
2184 // Output: CNS_fraction, char_O_CNS_fraction | |
2185 // | |
439
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|
2186 void deco_calc_CNS_planning(void) |
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2187 { |
490
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changeset
|
2188 overlay unsigned char backup_gas_last_depth; |
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BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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diff
changeset
|
2189 overlay unsigned char backup_gas_last_used; |
68aa097f0062
BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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diff
changeset
|
2190 overlay unsigned short backup_dive_mins; |
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BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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diff
changeset
|
2191 overlay unsigned char backup_actual_ppO2; |
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BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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|
2192 |
439
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2193 RESET_C_STACK |
490
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|
2194 |
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2195 // Backup state machine |
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2196 backup_gas_last_depth = sim_gas_last_depth; |
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2197 backup_gas_last_used = sim_gas_last_used; |
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2198 backup_dive_mins = sim_dive_mins; |
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2199 backup_actual_ppO2 = char_I_actual_ppO2; |
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2200 |
439
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|
2201 // Uses 1min CNS period: |
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2202 char_I_step_is_1min = 1; |
711
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2203 |
439
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2204 //---- Retrieve bottom Gas used, and set variables. |
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2205 sim_gas_last_used = char_I_first_gas; |
443
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2206 sim_gas_last_depth = 0; // Surface gas marker. |
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2207 gas_switch_set(); // Sets initial calc_N2/He_ratio |
439
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2208 |
743 | 2209 //---- CCR mode : do the full CNS at once -------------------------------- |
439
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2210 if( char_I_const_ppO2 != 0 ) |
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2211 { |
443
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2212 overlay unsigned short t; // Needs 16bits here ! |
439
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2213 char_I_actual_ppO2 = char_I_const_ppO2; |
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2214 for(t=0; t<int_O_ascenttime; ++t) |
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|
2215 deco_calc_CNS_fraction(); |
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2216 } |
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2217 else //---- OC mode : have to follow all gas switches... ----------------- |
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2218 { |
443
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|
2219 overlay unsigned char i = 0; // Decostop loop counter |
439
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|
2220 overlay float actual_ppO2; |
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|
2221 overlay unsigned char time, t; |
563 | 2222 overlay unsigned char deepest_first = (read_custom_function(54) == 0); |
439
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2223 |
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|
2224 //---- Ascent to surface delay |
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2225 // NOTE: count as if time is spent with bottom pressure, |
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|
2226 // AND the bottom gas |
541
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|
2227 actual_ppO2 = (pres_surface + char_I_bottom_depth * METER_TO_BAR) |
439
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2228 * (1.0 - calc_N2_ratio - calc_He_ratio); |
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2229 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
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2230 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
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2231 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
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|
2232 |
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|
2233 // Ascent time (rounded up): |
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|
2234 time = (unsigned char)(0.1 * char_I_bottom_depth + 0.5); |
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2235 |
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2236 for(t=0; t<time; ++t) |
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2237 { |
439
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|
2238 deco_calc_CNS_fraction(); |
490
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|
2239 sim_dive_mins++; |
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|
2240 } |
439
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|
2241 |
563 | 2242 //---- Do all further stops ------------------------------------------ |
439
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2243 for(i=0; i<NUM_STOPS; ++i) |
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2244 { |
766
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|
2245 overlay unsigned char stop_gas; |
563 | 2246 |
2247 //---- Get next stop, possibly in reverse order ------------------ | |
2248 if( deepest_first ) | |
2249 { | |
2250 time = char_O_deco_time[i]; | |
2251 temp_depth_limit = char_O_deco_depth[i]; | |
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2252 stop_gas = char_O_deco_gas[i]; |
563 | 2253 } |
2254 else | |
2255 { | |
2256 time = char_O_deco_time[(NUM_STOPS-1)-i]; | |
2257 temp_depth_limit = char_O_deco_depth[(NUM_STOPS-1)-i]; | |
766
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2258 stop_gas = char_O_deco_gas[(NUM_STOPS-1)-i]; |
563 | 2259 } |
2260 if( time == 0 ) continue; | |
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2261 |
563 | 2262 //---- Gas Switch ? ---------------------------------------------- |
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|
2263 if( stop_gas != sim_gas_last_used ) |
563 | 2264 { |
766
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2265 sim_gas_last_depth = deco_gas_change[stop_gas-1]; |
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|
2266 sim_gas_last_used = stop_gas; |
563 | 2267 gas_switch_set(); |
2268 } | |
2269 | |
2270 //---- Convert Depth and N2_ratio to ppO2 ------------------------ | |
541
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|
2271 actual_ppO2 = (pres_surface + temp_depth_limit * METER_TO_BAR) |
439
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2272 * (1.0 - calc_N2_ratio - calc_He_ratio); |
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|
2273 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
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|
2274 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
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|
2275 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
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|
2276 |
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|
2277 //---- Apply the stop |
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2278 for(t=0; t<time; ++t) |
490
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|
2279 { |
439
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|
2280 deco_calc_CNS_fraction(); |
490
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|
2281 sim_dive_mins++; |
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|
2282 } |
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|
2283 } |
488 | 2284 } |
2285 | |
563 | 2286 //---- Back to normal mode... -------------------------------------------- |
488 | 2287 char_I_step_is_1min = 0; |
490
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|
2288 sim_gas_last_depth = backup_gas_last_depth; |
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|
2289 sim_gas_last_used = backup_gas_last_used; |
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|
2290 sim_dive_mins = backup_dive_mins; |
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BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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|
2291 char_I_actual_ppO2 = backup_actual_ppO2; |
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|
2292 } |
439
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|
2293 |
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|
2294 ////////////////////////////////////////////////////////////////////////////// |
167 | 2295 // deco_calc_CNS_decrease_15min |
2296 // | |
116 | 2297 // new in v.101 |
167 | 2298 // |
116 | 2299 // calculates the half time of 90 minutes in 6 steps of 15 min |
200 | 2300 // (Used in sleepmode, for low battery mode). |
167 | 2301 // |
116 | 2302 // Output: char_O_CNS_fraction |
2303 // Uses and Updates: CNS_fraction | |
167 | 2304 // |
116 | 2305 void deco_calc_CNS_decrease_15min(void) |
2306 { | |
237 | 2307 RESET_C_STACK |
514 | 2308 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
237 | 2309 |
126 | 2310 CNS_fraction = 0.890899 * CNS_fraction; |
514 | 2311 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); |
167 | 2312 } |
116 | 2313 |
167 | 2314 ////////////////////////////////////////////////////////////////////////////// |
2315 // deco_calc_percentage | |
2316 // | |
116 | 2317 // new in v.101 |
167 | 2318 // |
116 | 2319 // calculates int_I_temp * char_I_temp / 100 |
2320 // output is int_I_temp | |
200 | 2321 // |
2322 // Used to compute NoFly remaining time. | |
222
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|
2323 // |
116 | 2324 void deco_calc_percentage(void) |
2325 { | |
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
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|
2326 RESET_C_STACK |
222
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2327 |
237 | 2328 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
564 | 2329 assert( int_I_temp < 5760 ); // Less than 4 days = 96h... |
237 | 2330 |
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2331 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
237 | 2332 |
554
896b6346ccd2
CHANGE: Allow up to 96h desat when computing NoFly (OSTC Planner).
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diff
changeset
|
2333 assert( int_I_temp < 5760 ); // Less than 96h too... |
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2334 } |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2335 |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2336 |
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|
2337 ////////////////////////////////////////////////////////////////////////////// |
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2338 // deco_gas_volumes |
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2339 // |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2340 // new in v.111 |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2341 // |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2342 // calculates volumes for each gas. |
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|
2343 // |
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2344 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
240
d995e220ddac
BUGFIX Gas Usage when first gas is not #1 (bug BB22).
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|
2345 // Gas list. |
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BUGFIX Gas Usage when first gas is not #1 (bug BB22).
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2346 // char_I_first_gas is the bottom gas. |
222
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2347 // decoplan (char_O_deco_depth, char_O_deco_time). |
234
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diff
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|
2348 // CF#54 == TRUE if shallowest stop first. |
478
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|
2349 // CF#56 == bottom liters/minutes (5 .. 50) or bar/min. |
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|
2350 // CF#57 == deco liters/minutes (5 .. 50) or bar/min. |
224 | 2351 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2352 // |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2353 void deco_gas_volumes(void) |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2354 { |
338 | 2355 overlay float volumes[NUM_GAS]; |
478
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|
2356 overlay float bottom_usage, deco_usage; |
234
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BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
changeset
|
2357 overlay unsigned char i, deepest_first; |
646 | 2358 overlay unsigned char gas, depth; |
783
e57e8045527d
FIX: Gas volume computation when using several travel mix.
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changeset
|
2359 overlay unsigned char lastGasStop = 255; |
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2360 RESET_C_STACK |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2361 |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2362 //---- initialize with bottom consumption -------------------------------- |
338 | 2363 for(i=0; i<NUM_GAS; ++i) // Nothing yet... |
240
d995e220ddac
BUGFIX Gas Usage when first gas is not #1 (bug BB22).
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|
2364 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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|
2365 |
338 | 2366 assert(1 <= char_I_first_gas && char_I_first_gas <= NUM_GAS); |
241 | 2367 gas = char_I_first_gas - 1; |
2368 | |
478
fd8266b511cc
New SAC (CF56/CF57) in 5..50 l/min range (no more decimal).
JeanDo
parents:
471
diff
changeset
|
2369 bottom_usage = (float) read_custom_function(56); |
580
32448d5ca734
BUGFIX: GasVolume should not count bottom time/depth in CCR mode.
JeanDo
parents:
579
diff
changeset
|
2370 if( char_I_const_ppO2 == 0 && bottom_usage > 0.0 ) |
265 | 2371 volumes[gas] |
2372 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
2373 * char_I_bottom_time // in minutes. | |
2374 * bottom_usage; // In liter/minutes. | |
579
fff1d38625f0
BUGFIX: GasVolumes should check for a gas switch before the first stop.
JeanDo
parents:
568
diff
changeset
|
2375 |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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218
diff
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|
2376 //---- Ascent usage ------------------------------------------------------ |
234
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2377 deepest_first = read_custom_function(54) == 0; |
511
2a6293641d51
NEW NDL NDL faster/more precise simu (but no closed formula for trimix).
JeanDo
parents:
509
diff
changeset
|
2378 deco_usage = (float) read_custom_function(57); // In liter/minutes. |
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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|
2379 |
646 | 2380 depth = char_I_bottom_depth; |
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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|
2381 |
338 | 2382 for(i=0; i<NUM_STOPS; ++i) |
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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|
2383 { |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2384 overlay unsigned char newDepth, time; |
234
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2385 |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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diff
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|
2386 // Manage stops in reverse order (CF#54) |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2387 if( deepest_first ) |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2388 { |
241 | 2389 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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|
2390 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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|
2391 |
766
3b1af9891019
BUGFIX: CNS calculation in decoplan should track gas (no marked changes anymore)
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757
diff
changeset
|
2392 newDepth = char_O_deco_depth[i]; |
234
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2393 } |
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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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|
2394 else |
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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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|
2395 { |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2396 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
|
2397 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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diff
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|
2398 |
766
3b1af9891019
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757
diff
changeset
|
2399 newDepth = char_O_deco_depth[31-i]; |
234
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2400 } |
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BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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diff
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|
2401 |
783
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2402 //---- Gas switch during or before this stop -------------------------- |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2403 for(;;) |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
JeanDo
parents:
218
diff
changeset
|
2404 { |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2405 overlay unsigned char newGas = 0; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2406 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
|
2407 overlay unsigned char j; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2408 |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2409 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
|
2410 { |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2411 // Skip gas without changing depth: |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2412 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
|
2413 continue; |
783
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2414 // Select gas changed between [newDepth .. lastGasStop[ |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
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782
diff
changeset
|
2415 // Note that <= means changing gas at BEGINNING of this stop. |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2416 // Note that < means we cant use the same gas twice |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2417 if( newDepth <= char_I_deco_gas_change[j] |
783
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2418 && char_I_deco_gas_change[j] < lastGasStop ) |
646 | 2419 { |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2420 // 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
|
2421 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
|
2422 { |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2423 newGas = j; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2424 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
|
2425 } |
646 | 2426 } |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2427 } |
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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|
2428 |
783
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2429 // Did we find something ? |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2430 if( !newStop ) |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2431 break; |
646 | 2432 |
783
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2433 //---- usage BEFORE gas switch (if any), at 10m/min : |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2434 if( deco_usage > 0.0 && depth > newStop ) |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2435 // Plus usage during ascent to the next stop, at 10m/min. |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2436 volumes[gas] += ((depth+newStop)*0.05 + 1.0) // average depth --> bar. |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2437 * (depth-newStop)*0.1 // metre --> min |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2438 * deco_usage; |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2439 |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2440 //---- Do gas switch: |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2441 gas = newGas; |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2442 |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
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parents:
782
diff
changeset
|
2443 lastGasStop = newStop; // Mark last used gas |
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2444 if( newStop < depth ) // ascent to gas switch, |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2445 depth = newStop; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2446 } |
646 | 2447 |
783
e57e8045527d
FIX: Gas volume computation when using several travel mix.
JeanDo
parents:
782
diff
changeset
|
2448 //---- usage AFTER gas switch (if any), at 10m/min : |
646 | 2449 if( depth > newDepth ) |
2450 volumes[gas] += ((depth+newDepth)*0.05 + 1.0) // average depth --> bar. | |
2451 * (depth-newDepth)*0.1 // metre --> min | |
2452 * deco_usage; | |
2453 | |
783
e57e8045527d
FIX: Gas volume computation when using several travel mix.
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parents:
782
diff
changeset
|
2454 //---- Do stop: |
646 | 2455 depth = newDepth; |
2456 | |
2457 // Usage at stop: | |
478
fd8266b511cc
New SAC (CF56/CF57) in 5..50 l/min range (no more decimal).
JeanDo
parents:
471
diff
changeset
|
2458 if( deco_usage > 0.0 ) |
265 | 2459 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. |
2460 * time // in minutes. | |
646 | 2461 * deco_usage; // in xxx / min @ 1bar. |
265 | 2462 else |
2463 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
|
2464 } |
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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218
diff
changeset
|
2465 |
646 | 2466 // From last stop to surface |
2467 if( deco_usage > 0.0 ) | |
2468 volumes[gas] += (depth*0.05 + 1.0) // avg depth --> bar. | |
2469 * depth * 0.1 // time to surface, in minutes. | |
2470 * deco_usage; // in xxx / min @ 1bar. | |
2471 | |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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218
diff
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|
2472 //---- convert results for the ASM interface ----------------------------- |
338 | 2473 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
|
2474 if( volumes[i] > 65534.0 ) |
224 | 2475 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
|
2476 else |
441
4826dd98514b
NEW: Decoplanner OC volumes in liters (or bars), up to 65000.
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439
diff
changeset
|
2477 int_O_gas_volumes[i] = (unsigned short)(volumes[i] + 0.5); |
116 | 2478 } |
2479 | |
167 | 2480 ////////////////////////////////////////////////////////////////////////////// |
2481 | |
116 | 2482 void deco_push_tissues_to_vault(void) |
2483 { | |
167 | 2484 overlay unsigned char x; |
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
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116
diff
changeset
|
2485 RESET_C_STACK |
167 | 2486 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2487 cns_vault = CNS_fraction; |
697 | 2488 low_depth_vault = low_depth; |
2489 | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2490 for (x=0;x<NUM_COMP;x++) |
339 | 2491 { |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2492 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
|
2493 pres_tissue_He_vault[x] = pres_tissue_He[x]; |
339 | 2494 } |
116 | 2495 } |
167 | 2496 |
116 | 2497 void deco_pull_tissues_from_vault(void) |
2498 { | |
167 | 2499 overlay unsigned char x; |
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
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116
diff
changeset
|
2500 RESET_C_STACK |
167 | 2501 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
2502 for (x=0; x<NUM_COMP; x++) |
339 | 2503 { |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2504 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
|
2505 pres_tissue_He[x] = pres_tissue_He_vault[x]; |
339 | 2506 } |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
2507 |
292 | 2508 // Restore both CNS variable, too. |
2509 CNS_fraction = cns_vault; | |
514 | 2510 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); |
697 | 2511 |
2512 // GF history too: | |
2513 low_depth = low_depth_vault; | |
2514 locked_GF_step = GF_delta / low_depth; | |
116 | 2515 } |
2516 | |
167 | 2517 ////////////////////////////////////////////////////////////////////////////// |
2518 // | |
184 | 2519 #ifndef CROSS_COMPILE |
2520 void main() {} | |
2521 #endif |