Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 780:de7fa2316913
add simple gas change countdown
author | heinrichsweikamp |
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date | Mon, 26 May 2014 23:15:59 +0200 |
parents | 3b1af9891019 |
children | 6f54104ea0ee |
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 |
116 | 93 // |
167 | 94 // TODO: |
95 // + Allow to abort MD2 calculation (have to restart next time). | |
96 // | |
97 // Literature: | |
200 | 98 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
116 | 99 // 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 |
100 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
101 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
102 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
103 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
167 | 104 // |
105 // | |
116 | 106 |
107 // ********************* | |
108 // ** I N C L U D E S ** | |
109 // ********************* | |
110 #include <math.h> | |
167 | 111 |
192 | 112 // *********************************************** |
113 // ** V A R I A B L E S D E F I N I T I O N S ** | |
114 // *********************************************** | |
115 | |
116 #include "p2_definitions.h" | |
275
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117 #define TEST_MAIN |
509 | 118 #include "../OSTC_code_asm_part1/shared_definitions.h" |
192 | 119 |
200 | 120 // Water vapour partial pressure in the lumb. |
527 | 121 #define ppWater 0.0627 |
317 | 122 #define METER_TO_BAR 0.09985 |
123 #define BAR_TO_METER 10.0150 // (1.0/METER_TO_BAR) | |
200 | 124 |
491
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125 // Surface security factor |
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126 #define SURFACE_DESAT_FACTOR 0.7042 |
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127 |
167 | 128 // ************************* |
129 // ** P R O T O T Y P E S ** | |
130 // ************************* | |
131 | |
132 static void calc_hauptroutine(void); | |
133 static void calc_nullzeit(void); | |
134 | |
192 | 135 static void calc_tissue(PARAMETER unsigned char period); |
258 | 136 static void calc_limit(void); |
192 | 137 |
167 | 138 static void clear_tissue(void); |
139 static void calc_ascenttime(void); | |
140 static void update_startvalues(void); | |
169
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141 static void clear_deco_table(void); |
471 | 142 static unsigned char update_deco_table(void); |
192 | 143 |
144 static void sim_tissue(PARAMETER unsigned char period); | |
145 static void sim_limit(PARAMETER float GF_current); | |
312
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146 static void sim_extra_time(void); |
368 | 147 static void calc_dive_interval(void); |
312
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148 |
167 | 149 static void calc_gradient_factor(void); |
150 static void calc_wo_deco_step_1_min(void); | |
151 | |
152 static void calc_hauptroutine_data_input(void); | |
153 static void calc_hauptroutine_update_tissues(void); | |
154 static void calc_hauptroutine_calc_deco(void); | |
169
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155 static void sim_ascent_to_first_stop(void); |
167 | 156 |
241 | 157 static unsigned char gas_switch_deepest(void); |
158 static void gas_switch_set(void); | |
217 | 159 |
241 | 160 static unsigned char calc_nextdecodepth(void); |
116 | 161 |
200 | 162 //---- Bank 4 parameters ----------------------------------------------------- |
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163 #ifndef UNIX |
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164 # pragma udata bank4=0x400 |
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165 #endif |
116 | 166 |
167 static float GF_low; | |
168 static float GF_high; | |
169 static float GF_delta; | |
192 | 170 static float locked_GF_step; // GF_delta / low_depth |
171 | |
172 static unsigned char temp_depth_limit; | |
695 | 173 float low_depth; // Depth of deepest stop |
171 | 174 |
757 | 175 static unsigned char internal_deco_time [NUM_STOPS]; |
338 | 176 static unsigned char internal_deco_depth[NUM_STOPS]; |
757 | 177 static unsigned char internal_deco_gas [NUM_STOPS]; |
116 | 178 |
179 static float cns_vault; | |
697 | 180 static float low_depth_vault; |
339 | 181 static float pres_tissue_N2_vault[NUM_COMP]; |
182 static float pres_tissue_He_vault[NUM_COMP]; | |
116 | 183 |
163 | 184 //---- Bank 5 parameters ----------------------------------------------------- |
601
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185 #ifndef UNIX |
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186 # pragma udata bank5=0x500 |
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187 #endif |
163 | 188 |
167 | 189 static unsigned char ci; |
116 | 190 static float pres_respiration; |
191 static float pres_surface; | |
192 static float temp_deco; | |
236 | 193 static float ppN2; |
200 | 194 static float ppHe; |
116 | 195 static float temp_tissue; |
200 | 196 static float N2_ratio; // Breathed gas nitrogen ratio. |
197 static float He_ratio; // Breathed gas helium ratio. | |
198 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
199 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
200 static float var_He_a; // Bühlmann a, for current He tissue. | |
201 static float var_He_b; // Bühlmann b, for current He tissue. | |
202 static float var_N2_e; // Exposition, for current N2 tissue. | |
203 static float var_He_e; // Exposition, for current He tissue. | |
509 | 204 static float var_N2_ht; // Half-time for current N2 tissue. |
205 static float var_He_ht; // Half-time for current N2 tissue. | |
116 | 206 |
338 | 207 static float pres_diluent; // new in v.101 |
208 static float const_ppO2; // new in v.101 | |
116 | 209 |
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210 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
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211 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. |
203 | 212 static unsigned short sim_dive_mins; // Simulated dive time. |
200 | 213 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
214 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
215 static float CNS_fraction; // new in v.101 | |
216 static float float_saturation_multiplier; // new in v.101 | |
217 static float float_desaturation_multiplier; // new in v.101 | |
338 | 218 static float float_deco_distance; // new in v.101 |
167 | 219 |
338 | 220 static unsigned char deco_gas_change[NUM_GAS]; // new in v.109 |
167 | 221 |
757 | 222 // Simulation context: used to predict ascent. |
223 unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
224 float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
225 | |
226 // Real context: what we are doing now. | |
227 static float calc_lead_tissue_limit; // | |
228 | |
163 | 229 //---- Bank 6 parameters ----------------------------------------------------- |
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230 #ifndef UNIX |
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231 # pragma udata bank6=0x600 |
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232 #endif |
116 | 233 |
339 | 234 float pres_tissue_N2[NUM_COMP]; |
235 float pres_tissue_He[NUM_COMP]; | |
509 | 236 float sim_pres_tissue_N2[NUM_COMP]; // 16 floats = 64 bytes. |
237 float sim_pres_tissue_He[NUM_COMP]; // 16 floats = 64 bytes. | |
116 | 238 |
163 | 239 //---- Bank 7 parameters ----------------------------------------------------- |
601
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240 #ifndef UNIX |
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241 # pragma udata bank7=0x700 |
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242 #endif |
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243 |
509 | 244 // EMPTY ... |
116 | 245 |
163 | 246 //---- Bank 8 parameters ----------------------------------------------------- |
601
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247 #ifndef UNIX |
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248 # pragma udata bank8=0x800 |
163 | 249 |
601
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250 static char md_pi_subst[256]; |
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251 # define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
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252 |
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253 #endif |
116 | 254 |
163 | 255 //---- Bank 9 parameters ----------------------------------------------------- |
601
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256 #ifndef UNIX |
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257 # pragma udata bank9=0x900 |
116 | 258 |
601
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259 static char md_state[48]; // DONT MOVE : has to be at the beginning of bank 9 for the asm code!!! |
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260 #endif |
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261 |
116 | 262 |
167 | 263 ////////////////////////////////////////////////////////////////////////////// |
264 ////////////////////////////////////////////////////////////////////////////// | |
265 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
266 ////////////////////////////////////////////////////////////////////////////// | |
267 ////////////////////////////////////////////////////////////////////////////// | |
268 // | |
269 // End of PROM code is 17F00, So push tables on PROM top... | |
270 // | |
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271 #ifndef UNIX |
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272 # pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. |
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273 #endif |
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274 |
167 | 275 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) |
116 | 276 |
167 | 277 // Magic table to compute the MD2 HASH |
278 // | |
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279 #ifndef UNIX |
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280 # pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... |
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281 rom const rom unsigned short md_pi[] = |
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282 { |
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283 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 |
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284 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA |
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285 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 |
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286 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A |
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287 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 |
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288 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 |
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289 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 |
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290 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 |
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291 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 |
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292 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F |
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293 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 |
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294 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 |
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295 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A |
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296 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 |
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297 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A |
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298 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 |
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299 }; |
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300 #endif |
116 | 301 |
167 | 302 ////////////////////////////////////////////////////////////////////////////// |
303 ////////////////////////////////////////////////////////////////////////////// | |
304 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
305 ////////////////////////////////////////////////////////////////////////////// | |
306 ////////////////////////////////////////////////////////////////////////////// | |
307 // | |
116 | 308 // all new in v.102 |
309 // moved from 0x0D000 to 0x0C000 in v.108 | |
601
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310 #ifndef UNIX |
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311 # pragma code p2_deco = 0x0C000 |
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312 #endif |
116 | 313 |
167 | 314 ////////////////////////////////////////////////////////////////////////////// |
315 ////////////////////////////////////////////////////////////////////////////// | |
316 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
317 ////////////////////////////////////////////////////////////////////////////// | |
318 ////////////////////////////////////////////////////////////////////////////// | |
319 | |
235 | 320 ////////////////////////////////////////////////////////////////////////////// |
257
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321 // Bump to blue-screen when an assert is wrong |
235 | 322 #ifdef __DEBUG |
323 void assert_failed(PARAMETER short int line) | |
324 { | |
681 | 325 extern void DISP_resetdebugger(void); |
235 | 326 extern unsigned short temp10; |
327 | |
257
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328 temp10 = line; // Show source line number as stack depth. |
681 | 329 DISP_resetdebugger(); |
235 | 330 } |
331 #endif | |
257
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332 |
235 | 333 ////////////////////////////////////////////////////////////////////////////// |
334 // When calling C code from ASM context, the data stack pointer and | |
335 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
336 | |
337 #ifdef CROSS_COMPILE | |
338 # define RESET_C_STACK | |
339 #else | |
340 # ifdef __DEBUG | |
341 # define RESET_C_STACK fillDataStack(); | |
342 void fillDataStack(void) | |
343 { | |
344 _asm | |
345 LFSR 1,C_STACK | |
346 MOVLW 0xCC | |
347 loop: MOVWF POSTINC1,0 | |
348 TSTFSZ FSR1L,0 | |
349 BRA loop | |
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350 |
235 | 351 LFSR 1,C_STACK |
352 LFSR 2,C_STACK | |
353 _endasm | |
354 } | |
355 # else | |
356 # define RESET_C_STACK \ | |
357 _asm \ | |
358 LFSR 1, C_STACK \ | |
359 LFSR 2, C_STACK \ | |
360 _endasm | |
361 # endif | |
362 #endif | |
363 | |
364 ////////////////////////////////////////////////////////////////////////////// | |
257
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365 // Read CF values from the C code. |
235 | 366 |
488 | 367 #ifdef CROSS_COMPILE |
368 // Full description of the OSTC EEPROM map, including CF values. | |
369 # include "OSTC_eeprom.h" | |
370 #endif | |
371 | |
203 | 372 static short read_custom_function(PARAMETER unsigned char cf) |
167 | 373 { |
184 | 374 #ifdef CROSS_COMPILE |
743 | 375 return READ_CF_MACRO(cf); |
184 | 376 #else |
167 | 377 extern unsigned char hi, lo; |
378 extern void getcustom15(); | |
379 _asm | |
380 movff cf,WREG | |
381 call getcustom15,0 | |
382 movff lo,PRODL | |
383 movff hi,PRODH | |
384 _endasm | |
184 | 385 #endif |
167 | 386 } |
387 | |
388 ////////////////////////////////////////////////////////////////////////////// | |
257
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389 // Fast subroutine to read RTC timer 3. |
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390 // Note: result is in 1/32 of msecs. |
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391 static unsigned short tmr3(void) |
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392 { |
261 | 393 #ifndef CROSS_COMPILE |
257
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394 _asm |
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395 movff 0xfb2,PRODL // TMR3L |
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396 movff 0xfb3,PRODH // TMR3H |
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397 _endasm // result in PRODH:PRODL. |
261 | 398 #else |
399 return 0; | |
400 #endif | |
257
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401 } |
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402 |
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403 ////////////////////////////////////////////////////////////////////////////// |
258 | 404 // read buhlmann tables A and B for compatriment ci |
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405 // |
258 | 406 static void read_buhlmann_coefficients(void) |
165 | 407 { |
184 | 408 #ifndef CROSS_COMPILE |
167 | 409 // Note: we don't use far rom pointer, because the |
338 | 410 // 24 bits is too complex, hence we have to set |
167 | 411 // the UPPER page ourself... |
412 // --> Set zero if tables are moved to lower pages ! | |
413 _asm | |
414 movlw 1 | |
415 movwf TBLPTRU,0 | |
416 _endasm | |
184 | 417 #endif |
258 | 418 |
564 | 419 assert( ci < NUM_COMP ); |
338 | 420 |
421 // Use an interleaved array (AoS) to access coefficients with a | |
422 // single addressing. | |
423 { | |
424 overlay rom const float* ptr = &buhlmann_ab[4*ci]; | |
425 var_N2_a = *ptr++; | |
426 var_N2_b = *ptr++; | |
427 var_He_a = *ptr++; | |
428 var_He_b = *ptr++; | |
429 } | |
258 | 430 } |
431 | |
432 ////////////////////////////////////////////////////////////////////////////// | |
433 // read buhlmann tables for compatriment ci | |
434 // If period == 0 : 2sec interval | |
435 // 1 : 1 min interval | |
436 // 2 : 10 min interval. | |
437 static void read_buhlmann_times(PARAMETER char period) | |
438 { | |
439 #ifndef CROSS_COMPILE | |
440 // Note: we don't use far rom pointer, because the | |
441 // 24 bits is to complex, hence we have to set | |
442 // the UPPER page ourself... | |
443 // --> Set zero if tables are moved to lower pages ! | |
444 _asm | |
445 movlw 1 | |
446 movwf TBLPTRU,0 | |
447 _endasm | |
448 #endif | |
338 | 449 |
564 | 450 assert( ci < NUM_COMP ); |
258 | 451 |
165 | 452 // Integration intervals. |
167 | 453 switch(period) |
165 | 454 { |
455 case 0: //---- 2 sec ----------------------------------------------------- | |
338 | 456 { |
457 overlay rom const float* ptr = &e2secs[2*ci]; | |
458 var_N2_e = *ptr++; | |
459 var_He_e = *ptr++; | |
460 } | |
165 | 461 break; |
462 | |
463 case 1: //---- 1 min ----------------------------------------------------- | |
338 | 464 { |
465 overlay rom const float* ptr = &e1min[2*ci]; | |
466 var_N2_e = *ptr++; | |
467 var_He_e = *ptr++; | |
468 } | |
165 | 469 break; |
470 | |
471 case 2: //---- 10 min ---------------------------------------------------- | |
338 | 472 { |
473 overlay rom const float* ptr = &e10min[2*ci]; | |
474 var_N2_e = *ptr++; | |
475 var_He_e = *ptr++; | |
476 } | |
165 | 477 break; |
197 | 478 |
479 default: | |
527 | 480 assert(0); // Never go there... |
165 | 481 } |
482 } | |
483 | |
484 ////////////////////////////////////////////////////////////////////////////// | |
509 | 485 // read buhlmann tables for compatriment ci |
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486 // |
509 | 487 static void read_buhlmann_ht(void) |
488 { | |
489 | |
490 #ifndef CROSS_COMPILE | |
491 // Note: we don't use far rom pointer, because the | |
492 // 24 bits is to complex, hence we have to set | |
493 // the UPPER page ourself... | |
494 // --> Set zero if tables are moved to lower pages ! | |
495 _asm | |
496 movlw 1 | |
497 movwf TBLPTRU,0 | |
498 _endasm | |
499 #endif | |
500 | |
564 | 501 assert( ci < NUM_COMP ); |
509 | 502 { |
503 overlay rom const float* ptr = &buhlmann_ht[2*ci]; | |
504 var_N2_ht = *ptr++; | |
505 var_He_ht = *ptr++; | |
711
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506 } |
509 | 507 |
508 assert( 4.0 <= var_N2_ht && var_N2_ht <= 635.0 ); | |
509 assert( 1.5099 <= var_He_ht && var_He_ht <= 240.03 ); | |
510 } | |
511 | |
512 ////////////////////////////////////////////////////////////////////////////// | |
340
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BUGFIX save negativ temperatures in logbook (bbbug #6)
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513 // calc_nextdecodepth |
165 | 514 // |
116 | 515 // new in v.102 |
165 | 516 // |
116 | 517 // INPUT, changing during dive: |
509 | 518 // temp_deco |
192 | 519 // low_depth |
167 | 520 // |
116 | 521 // INPUT, fixed during dive: |
167 | 522 // pres_surface |
523 // GF_delta | |
524 // GF_high | |
525 // GF_low | |
171 | 526 // char_I_depth_last_deco |
167 | 527 // float_deco_distance |
528 // | |
241 | 529 // RETURN TRUE iff a stop is needed. |
530 // | |
116 | 531 // OUTPUT |
171 | 532 // locked_GF_step |
167 | 533 // temp_depth_limt |
192 | 534 // low_depth |
167 | 535 // |
241 | 536 static unsigned char calc_nextdecodepth(void) |
167 | 537 { |
241 | 538 //--- Max ascent speed --------------------------------------------------- |
539 // Recompute leading gas limit, at current depth: | |
317 | 540 overlay float depth = (temp_deco - pres_surface) * BAR_TO_METER; |
241 | 541 |
542 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
302 | 543 overlay float min_depth = (depth > 10.0) ? (depth - 10.0) : 0.0; |
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544 |
241 | 545 // Do we need to stop at current depth ? |
546 overlay unsigned char need_stop = 0; | |
547 | |
548 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
549 | |
212 | 550 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
711
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551 if( char_I_deco_model != 0 ) |
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552 { |
562 | 553 overlay unsigned char first_stop = 0; |
554 overlay float p; | |
555 | |
567 | 556 sim_limit( GF_low ); |
562 | 557 p = sim_lead_tissue_limit - pres_surface; |
695 | 558 p *= BAR_TO_METER; |
562 | 559 if( p <= 0.0f ) |
560 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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561 |
695 | 562 // Store the deepest point needing a deco stop as the LOW reference for GF. |
563 // NOTE: following stops will be validated using this LOW-HIGH gf scale, | |
564 // so if we want to keep coherency, we should not validate this stop | |
565 // yet, but apply the search to it, as for all the following stops afterward. | |
566 if( p > low_depth ) | |
567 { | |
568 low_depth = p; | |
569 locked_GF_step = GF_delta / low_depth; | |
570 } | |
571 | |
562 | 572 if( p < min_depth ) |
573 goto no_deco_stop; // First stop is higher than 1' ascent. | |
275
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574 |
695 | 575 // Round to multiple of 3m. |
576 first_stop = 3 * (short)(0.9995f + p*0.333333f); | |
562 | 577 assert( first_stop < 128 ); |
578 | |
579 // Apply correction for the shallowest stop. | |
580 if( first_stop == 3 ) // new in v104 | |
581 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
171 | 582 |
562 | 583 // We have a stop candidate. |
584 // But maybe ascending to the next stop will diminish the constraint, | |
585 // because the GF might decrease more than the preassure gradient... | |
586 while(first_stop > 0) | |
587 { | |
588 overlay unsigned char next_stop; // Next depth (0..90m) | |
171 | 589 |
562 | 590 // Check max speed, or reaching surface. |
591 if( first_stop <= min_depth ) | |
592 goto no_deco_stop; | |
171 | 593 |
562 | 594 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
595 next_stop = 0; | |
596 else if( first_stop == 6 ) | |
597 next_stop = char_I_depth_last_deco; | |
598 else | |
599 next_stop = first_stop - 3; // Index of next (upper) stop. | |
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600 |
562 | 601 // Total preassure at the new stop candidate: |
695 | 602 p = next_stop * METER_TO_BAR |
711
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603 + pres_surface; |
167 | 604 |
695 | 605 // Recompute limit for this new stop: |
606 if( !low_depth || next_stop > low_depth ) | |
607 sim_limit( GF_low ); | |
608 else | |
609 sim_limit( GF_high - next_stop * locked_GF_step ); | |
192 | 610 |
695 | 611 // Check upper limit (lowest ambiant pressure tolerated): |
612 if( sim_lead_tissue_limit >= p ) | |
613 goto deco_stop_found; // Ascent to next_stop forbiden. | |
562 | 614 |
615 // Else, validate that stop and loop... | |
616 first_stop = next_stop; | |
617 } | |
171 | 618 |
562 | 619 no_deco_stop: |
711
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620 temp_depth_limit = min_depth; |
562 | 621 goto done; |
212 | 622 |
695 | 623 deco_stop_found: |
562 | 624 // next stop is the last validated depth found, aka first_stop |
625 need_stop = 1; // Hit. | |
626 temp_depth_limit = first_stop; // Stop depth, in meter. | |
627 | |
628 done: | |
629 ; | |
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630 } |
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631 else //---- ZH-L16 model ------------------------------------------------- |
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632 { |
192 | 633 overlay float pres_gradient; |
634 | |
711
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635 // Original model |
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636 // optimized in v.101 |
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637 // char_I_depth_last_deco included in v.101 |
116 | 638 |
192 | 639 // Compute sim_lead_tissue_limit too, but just once. |
640 sim_limit(1.0); | |
641 | |
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642 pres_gradient = sim_lead_tissue_limit - pres_surface; |
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643 if (pres_gradient >= 0) |
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644 { |
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645 pres_gradient *= BAR_TO_METER/3; // Bar --> stop number; |
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646 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
241 | 647 need_stop = 1; // Hit. |
648 | |
649 // Implement last stop at 4m/5m/6m... | |
711
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650 if( temp_depth_limit == 3 ) |
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651 temp_depth_limit = char_I_depth_last_deco; |
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652 } |
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653 else |
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654 temp_depth_limit = 0; |
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655 } |
212 | 656 |
217 | 657 //---- Check gas change -------------------------------------------------- |
241 | 658 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
659 | |
660 return need_stop; | |
167 | 661 } |
116 | 662 |
167 | 663 ////////////////////////////////////////////////////////////////////////////// |
169
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664 // copy_deco_table |
167 | 665 // |
169
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666 // Buffer the stops, once computed, so we can continue to display them |
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667 // while computing the next set. |
167 | 668 // |
169
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669 static void copy_deco_table(void) |
116 | 670 { |
169
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671 // Copy depth of the first (deepest) stop, because when reversing |
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672 // order, it will be hard to find... |
766
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673 char_O_first_deco_depth = internal_deco_depth[0]; |
169
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674 char_O_first_deco_time = internal_deco_time [0]; |
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675 |
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676 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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677 { |
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678 overlay unsigned char x, y; |
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679 |
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680 //---- First: search the first non-null depth |
339 | 681 for(x=(NUM_STOPS-1); x != 0; --x) |
169
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682 if( internal_deco_depth[x] != 0 ) break; |
116 | 683 |
169
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684 //---- Second: copy to output table (in reverse order) |
338 | 685 for(y=0; y<NUM_STOPS; y++, --x) |
169
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686 { |
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687 char_O_deco_depth[y] = internal_deco_depth[x]; |
633
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688 char_O_deco_time_for_log[y] = internal_deco_time [x]; |
169
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689 char_O_deco_time [y] = internal_deco_time [x]; |
757 | 690 char_O_deco_gas [y] = internal_deco_gas [x]; |
169
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691 |
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692 // Stop only once the last transfer is done. |
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693 if( x == 0 ) break; |
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694 } |
116 | 695 |
169
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696 //---- Third: fill table end with null |
339 | 697 for(y++; y<NUM_STOPS; y++) |
169
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698 { |
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699 char_O_deco_time [y] = 0; |
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700 char_O_deco_depth[y] = 0; |
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701 char_O_deco_time_for_log[y] = 0; |
757 | 702 char_O_deco_gas [y] = 0; |
169
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703 } |
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704 } |
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705 else //---- Straight copy ------------------------------------------------ |
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706 { |
630
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707 overlay unsigned char x, y; |
167 | 708 |
339 | 709 for(x=0; x<NUM_STOPS; x++) |
169
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710 { |
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711 char_O_deco_depth[x] = internal_deco_depth[x]; |
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712 char_O_deco_time [x] = internal_deco_time [x]; |
757 | 713 char_O_deco_gas [x] = internal_deco_gas [x]; |
169
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714 } |
630
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715 |
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716 //Now fill the char_O_deco_time_for_log array |
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717 //---- First: search the first non-null depth |
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718 for(x=(NUM_STOPS-1); x != 0; --x) |
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719 if( internal_deco_depth[x] != 0 ) break; |
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720 |
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721 //---- Second: copy to output table (in reverse order) |
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722 for(y=0; y<NUM_STOPS; y++, --x) |
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723 { |
633
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724 char_O_deco_time_for_log[y] = internal_deco_time [x]; |
630
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725 |
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726 // Stop only once the last transfer is done. |
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727 if( x == 0 ) break; |
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728 } |
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729 |
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730 //---- Third: fill table end with null |
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731 for(y++; y<NUM_STOPS; y++) |
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732 { |
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733 char_O_deco_time_for_log [y] = 0; |
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734 } |
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735 } |
167 | 736 } |
116 | 737 |
167 | 738 ////////////////////////////////////////////////////////////////////////////// |
116 | 739 // temp_tissue_safety // |
167 | 740 // |
116 | 741 // outsourced in v.102 |
167 | 742 // |
743 // Apply safety factors for brand ZH-L16 model. | |
744 // | |
745 static void temp_tissue_safety(void) | |
116 | 746 { |
197 | 747 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
748 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
749 | |
711
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750 if( char_I_deco_model == 0 ) |
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751 { |
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752 if( temp_tissue < 0.0 ) |
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753 temp_tissue *= float_desaturation_multiplier; |
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754 else |
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755 temp_tissue *= float_saturation_multiplier; |
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756 } |
167 | 757 } |
116 | 758 |
167 | 759 ////////////////////////////////////////////////////////////////////////////// |
760 ////////////////////////////////////////////////////////////////////////////// | |
116 | 761 // ** THE JUMP-IN CODE ** |
762 // ** for the asm code ** | |
167 | 763 ////////////////////////////////////////////////////////////////////////////// |
764 ////////////////////////////////////////////////////////////////////////////// | |
122
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765 |
167 | 766 ////////////////////////////////////////////////////////////////////////////// |
169
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767 // Called every 2 seconds during diving. |
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768 // update tissues every time. |
184 | 769 // |
169
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770 // Every 6 seconds (or slower when TTS > 16): |
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771 // - update deco table (char_O_deco_time/depth) with new values. |
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772 // - update ascent time, |
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773 // - set status to zero (so we can check there is new results). |
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774 // |
116 | 775 void deco_calc_hauptroutine(void) |
776 { | |
122
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777 RESET_C_STACK |
116 | 778 calc_hauptroutine(); |
779 int_O_desaturation_time = 65535; | |
780 } | |
781 | |
167 | 782 ////////////////////////////////////////////////////////////////////////////// |
184 | 783 // Reset decompression model: |
784 // + Set all tissues to equilibrium with Air at ambient pressure. | |
785 // + Reset last stop to 0m | |
786 // + Reset all model output. | |
116 | 787 void deco_clear_tissue(void) |
788 { | |
122
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789 RESET_C_STACK |
116 | 790 clear_tissue(); |
791 } | |
792 | |
167 | 793 ////////////////////////////////////////////////////////////////////////////// |
278 | 794 // Called every 1 min during decoplanning. |
795 // Update tissues for 1 min. | |
796 // | |
797 void deco_calc_tissue(void) | |
798 { | |
799 RESET_C_STACK | |
800 calc_hauptroutine_update_tissues(); | |
711
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801 } |
278 | 802 |
803 ////////////////////////////////////////////////////////////////////////////// | |
167 | 804 |
116 | 805 void deco_calc_wo_deco_step_1_min(void) |
806 { | |
122
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807 RESET_C_STACK |
116 | 808 calc_wo_deco_step_1_min(); |
809 deco_calc_desaturation_time(); | |
810 } | |
811 | |
167 | 812 ////////////////////////////////////////////////////////////////////////////// |
813 | |
368 | 814 void deco_calc_dive_interval(void) |
815 { | |
816 RESET_C_STACK | |
817 calc_dive_interval(); | |
818 } | |
819 | |
241 | 820 ////////////////////////////////////////////////////////////////////////////// |
821 // Find current gas in the list (if any). | |
711
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822 // |
513 | 823 // Input: char_I_current_gas = 1..6 |
241 | 824 // |
513 | 825 // Output: sim_gas_last_depth = 0..5, temp_depth_limit. |
241 | 826 // |
827 static void gas_switch_find_current(void) | |
828 { | |
513 | 829 assert( 0 < char_I_current_gas && char_I_current_gas <= (NUM_GAS+1) ); |
247
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830 |
388 | 831 if( char_I_current_gas <= NUM_GAS ) // Gas1..Gas5 |
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832 { |
388 | 833 sim_gas_last_used = char_I_current_gas; |
834 | |
835 // Note: if current is first gas, we must find it, but not set | |
836 // last depth change to surface. | |
837 if( char_I_deco_gas_change[sim_gas_last_used-1] ) | |
838 sim_gas_last_depth = char_I_deco_gas_change[sim_gas_last_used-1]; | |
241 | 839 } |
388 | 840 else |
841 sim_gas_last_used = 0; // Gas 6 = manual set | |
241 | 842 } |
843 | |
167 | 844 ////////////////////////////////////////////////////////////////////////////// |
217 | 845 // Find deepest available gas. |
711
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846 // |
241 | 847 // Input: temp_depth_limit, |
848 // deco_gas_change[] | |
766
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849 // sim_gas_depth_used, sim_dive_mins. |
212 | 850 // |
241 | 851 // RETURNS TRUE if a stop is needed for gas switch. |
852 // | |
766
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853 // Output: temp_depth_limit, sim_gas_depth_used IFF the is a switch. |
212 | 854 // |
766
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855 // NOTE: might be called from bottom (when sim_gas_depth_used |
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856 // is null), or during the ascent to make sure we are not passing a |
241 | 857 // stop (in which case both can be already set). |
858 // | |
859 static unsigned char gas_switch_deepest(void) | |
201 | 860 { |
241 | 861 overlay unsigned char switch_deco = 0, switch_last = 0; |
201 | 862 |
863 if (char_I_const_ppO2 == 0) | |
864 { | |
225 | 865 overlay unsigned char j; |
866 | |
241 | 867 // Loop over all enabled gas, to find the deepest one, |
340
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868 // above last used gas, but below temp_depth_limit. |
338 | 869 for(j=0; j<NUM_GAS; ++j) |
225 | 870 { |
241 | 871 // Gas not (yet) allowed ? Skip ! |
872 if( temp_depth_limit > deco_gas_change[j] ) | |
873 continue; | |
874 | |
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875 // Gas deeper (or equal) than the current one ? Skip ! |
241 | 876 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) |
877 continue; | |
878 | |
879 // First, or deeper ? | |
247
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880 if( switch_deco < deco_gas_change[j] ) |
241 | 881 { |
882 switch_deco = deco_gas_change[j]; | |
388 | 883 switch_last = j+1; // 1..5 |
241 | 884 } |
225 | 885 } |
201 | 886 } |
887 | |
203 | 888 // If there is a better gas available |
241 | 889 if( switch_deco ) |
201 | 890 { |
241 | 891 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
201 | 892 |
241 | 893 sim_gas_last_depth = switch_deco; |
894 sim_gas_last_used = switch_last; | |
755 | 895 return 0; |
217 | 896 } |
241 | 897 return 0; |
217 | 898 } |
899 | |
900 ////////////////////////////////////////////////////////////////////////////// | |
901 // Calculate gas switches | |
711
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902 // |
217 | 903 // |
904 // Input: N2_ratio, He_ratio. | |
905 // sim_gas_last_used | |
906 // | |
907 // Output: calc_N2_ratio, calc_He_ratio | |
908 // | |
241 | 909 static void gas_switch_set(void) |
217 | 910 { |
564 | 911 assert( sim_gas_last_used <= NUM_GAS ); |
217 | 912 |
388 | 913 if( sim_gas_last_used == 0 ) // Gas6 = manualy set gas. |
224 | 914 { |
915 calc_N2_ratio = N2_ratio; | |
711
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|
916 calc_He_ratio = He_ratio; |
224 | 917 } |
918 else | |
919 { | |
920 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
711
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|
921 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; |
217 | 922 } |
201 | 923 |
924 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
925 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
926 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
927 } | |
928 | |
929 ////////////////////////////////////////////////////////////////////////////// | |
930 // | |
212 | 931 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
509 | 932 // temp_deco : simulated respiration pressure |
276 | 933 // float_deco_distance : security factor. |
310
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|
934 // Water-vapor pressure inside limbs (ppWater). |
212 | 935 // |
236 | 936 // Output: ppN2, ppHe. |
212 | 937 // |
938 static void sim_alveolar_presures(void) | |
201 | 939 { |
212 | 940 overlay float deco_diluent = temp_deco; // new in v.101 |
941 | |
276 | 942 // Take deco offset into account, but not at surface. |
943 // Note: this should be done on ambiant pressure, hence before | |
944 // computing the diluant partial pressure... | |
945 if( deco_diluent > pres_surface ) | |
946 deco_diluent += float_deco_distance; | |
947 | |
212 | 948 //---- CCR mode : deco gas switch ? -------------------------------------- |
276 | 949 if( char_I_const_ppO2 != 0 ) |
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950 { |
276 | 951 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
952 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
310
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953 // ppWater in the equations below: |
321 | 954 deco_diluent -= const_ppO2; |
276 | 955 deco_diluent /= calc_N2_ratio + calc_He_ratio; |
212 | 956 |
957 if (deco_diluent > temp_deco) | |
711
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958 deco_diluent = temp_deco; |
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959 } |
201 | 960 |
310
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961 if( deco_diluent > ppWater ) |
201 | 962 { |
310
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963 ppN2 = calc_N2_ratio * (deco_diluent - ppWater); |
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964 ppHe = calc_He_ratio * (deco_diluent - ppWater); |
201 | 965 } |
966 else | |
967 { | |
236 | 968 ppN2 = 0.0; |
201 | 969 ppHe = 0.0; |
970 } | |
236 | 971 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
201 | 972 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
973 } | |
974 | |
975 ////////////////////////////////////////////////////////////////////////////// | |
167 | 976 // clear_tissue |
977 // | |
165 | 978 // optimized in v.101 (var_N2_a) |
167 | 979 // |
980 // preload tissues with standard pressure for the given ambient pressure. | |
981 // Note: fixed N2_ratio for standard air. | |
201 | 982 // |
167 | 983 static void clear_tissue(void) |
116 | 984 { |
511
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985 overlay float p; |
116 | 986 |
167 | 987 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
988 N2_ratio = 0.7902; | |
212 | 989 pres_respiration = int_I_pres_respiration * 0.001; |
711
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990 |
511
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991 p = N2_ratio * (pres_respiration - ppWater); |
338 | 992 for(ci=0; ci<NUM_COMP; ci++) |
126 | 993 { |
511
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994 // cycle through the 16 Bühlmann N2 tissues |
339 | 995 pres_tissue_N2[ci] = p; |
197 | 996 |
997 // cycle through the 16 Bühlmann tissues for Helium | |
339 | 998 pres_tissue_He[ci] = 0.0; |
511
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999 } |
116 | 1000 |
169
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1001 clear_deco_table(); |
126 | 1002 char_O_deco_status = 0; |
1003 char_O_nullzeit = 0; | |
168 | 1004 int_O_ascenttime = 0; |
126 | 1005 char_O_gradient_factor = 0; |
1006 char_O_relative_gradient_GF = 0; | |
258 | 1007 |
1008 calc_lead_tissue_limit = 0.0; | |
1009 char_O_gtissue_no = 0; | |
167 | 1010 } |
116 | 1011 |
167 | 1012 ////////////////////////////////////////////////////////////////////////////// |
1013 // calc_hauptroutine | |
1014 // | |
1015 // this is the major code in dive mode calculates: | |
116 | 1016 // the tissues, |
167 | 1017 // the bottom time, |
1018 // and simulates the ascend with all deco stops. | |
171 | 1019 // |
1020 // The deco_state sequence is : | |
1021 // 3 (at surface) | |
1022 // +---> 0 : calc nullzeit | |
1023 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
1024 // | +-> 1 : simulate up to 16min of stops. | |
1025 // | +------< not finished | |
1026 // +--------< finish | |
1027 // | |
312
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1028 // Added steps 6,5 for @+5 calculation: |
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1029 // 6 = ascent to first stop (same as 2), except continue to 7 |
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1030 // 7 = same as 1, except loop to 7. |
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1031 // |
167 | 1032 static void calc_hauptroutine(void) |
116 | 1033 { |
711
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1034 static unsigned char backup_gas_used = 0; |
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1035 static unsigned char backup_gas_depth = 0; |
186 | 1036 |
711
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|
1037 calc_hauptroutine_data_input(); |
116 | 1038 |
711
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1039 calc_hauptroutine_update_tissues(); |
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|
1040 calc_gradient_factor(); |
116 | 1041 |
711
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1042 // toggle between calculation for nullzeit (bottom time), |
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|
1043 // deco stops |
167 | 1044 // and more deco stops (continue) |
697 | 1045 switch( char_O_deco_status ) |
711
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1046 { |
186 | 1047 case 3: //---- At surface: start a new dive ------------------------------ |
711
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1048 clear_deco_table(); |
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|
1049 copy_deco_table(); |
743 | 1050 int_O_ascenttime = 0; // Reset TTS. |
711
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diff
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|
1051 int_O_extra_ascenttime = 0; |
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1052 char_O_nullzeit = 0; // Reset bottom time. |
278 | 1053 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
201 | 1054 |
217 | 1055 // Values that should be reset just once for the full real dive. |
1056 // This is used to record the lowest stop for the whole dive, | |
1057 // Including ACCROSS all simulated ascent. | |
695 | 1058 low_depth = 0.0; |
567 | 1059 locked_GF_step = 0.0; |
217 | 1060 |
1061 // Reset gas switch history. | |
241 | 1062 backup_gas_used = sim_gas_last_used = 0; |
1063 backup_gas_depth = sim_gas_last_depth = 0; | |
203 | 1064 sim_dive_mins = 0; |
1065 break; | |
186 | 1066 |
167 | 1067 case 0: //---- bottom time ----------------------------------------------- |
312
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1068 default: |
509 | 1069 gas_switch_find_current(); // Lookup for current gas & time. |
1070 gas_switch_set(); // setup calc_ratio's | |
1071 | |
711
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|
1072 calc_nullzeit(); |
534
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1073 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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1074 { |
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BUGFIX NDL deco blocking stops during ascent when less than 10' TTS.
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1075 char_O_deco_status = 0; // YES: recalc ndl next time. |
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1076 clear_deco_table(); // Also clear stops ! |
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1077 copy_deco_table(); |
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1078 char_O_deco_last_stop = 0; // And last stop (OSTC menu anim) |
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|
1079 } |
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|
1080 else |
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|
1081 char_O_deco_status = 2; // NO: calc ascent next time. |
711
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|
1082 break; |
186 | 1083 |
1084 case 2: //---- Simulate ascent to first stop ----------------------------- | |
312
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1085 case 6: // @+5min variation |
203 | 1086 // Check proposed gas at begin of ascent simulation |
247
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1087 sim_dive_mins = int_I_divemins; // Init current time. |
241 | 1088 |
711
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|
1089 gas_switch_find_current(); // Lookup for current gas & time. |
532 | 1090 gas_switch_set(); // setup calc_ratio's |
1091 | |
247
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1092 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1093 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
186 | 1094 |
711
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|
1095 sim_ascent_to_first_stop(); |
201 | 1096 |
312
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1097 // Calc stops next time (deco or gas switch). |
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1098 char_O_deco_status = 1 | ( char_O_deco_status & 4 ); |
711
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|
1099 break; |
169
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|
1100 |
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|
1101 case 1: //---- Simulate stops -------------------------------------------- |
312
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1102 case 5: // @+5 variation. |
711
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|
1103 calc_hauptroutine_calc_deco(); |
186 | 1104 |
1105 // If simulation is finished, restore the GF low reference, so that | |
1106 // next ascent simulation is done from the current depth: | |
711
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|
1107 if( (char_O_deco_status & 3) == 0 ) |
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|
1108 { |
241 | 1109 sim_gas_last_used = backup_gas_used; |
1110 sim_gas_last_depth = backup_gas_depth; | |
186 | 1111 } |
711
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|
1112 break; |
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|
1113 } |
167 | 1114 |
116 | 1115 } |
1116 | |
167 | 1117 ////////////////////////////////////////////////////////////////////////////// |
1118 // calc_hauptroutine_data_input | |
1119 // | |
1120 // Reset all C-code dive parameters from their ASM-code values. | |
1121 // Detect gas change condition. | |
1122 // | |
116 | 1123 void calc_hauptroutine_data_input(void) |
1124 { | |
203 | 1125 overlay short int_temp; |
511
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|
1126 overlay unsigned char g; |
711
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|
1127 |
197 | 1128 pres_respiration = int_I_pres_respiration * 0.001; |
1129 pres_surface = int_I_pres_surface * 0.001; | |
1130 N2_ratio = char_I_N2_ratio * 0.01; | |
1131 He_ratio = char_I_He_ratio * 0.01; | |
1132 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
116 | 1133 |
126 | 1134 // ____________________________________________________ |
1135 // | |
1136 // _____________ G A S _ C H A N G E S ________________ | |
1137 // ____________________________________________________ | |
711
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|
1138 |
212 | 1139 // Keep a margin of 150mbar = 1.50m |
1140 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
1141 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
711
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|
1142 |
203 | 1143 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
511
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|
1144 for(g=0; g < NUM_GAS; ++g) |
126 | 1145 { |
511
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|
1146 deco_gas_change[g] = 0; |
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|
1147 if(char_I_deco_gas_change[g]) |
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diff
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|
1148 if( int_temp > 100 *(short)char_I_deco_gas_change[g] ) |
711
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|
1149 deco_gas_change[g] = char_I_deco_gas_change[g]; |
126 | 1150 } |
116 | 1151 |
197 | 1152 const_ppO2 = char_I_const_ppO2 * 0.01; |
1153 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
1154 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
1155 GF_low = char_I_GF_Low_percentage * 0.01; | |
1156 GF_high = char_I_GF_High_percentage * 0.01; | |
126 | 1157 GF_delta = GF_high - GF_low; |
116 | 1158 } |
1159 | |
167 | 1160 ////////////////////////////////////////////////////////////////////////////// |
171 | 1161 // |
1162 // | |
116 | 1163 void calc_hauptroutine_update_tissues(void) |
1164 { | |
197 | 1165 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
1166 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
1167 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
237 | 1168 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
197 | 1169 |
711
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|
1170 pres_diluent = pres_respiration; |
307 | 1171 if( char_I_const_ppO2 != 0 ) // new in v.101 |
186 | 1172 { |
322 | 1173 overlay float flush_ppO2 = pres_respiration * (1.0 - N2_ratio - He_ratio); |
711
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|
1174 |
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diff
changeset
|
1175 pres_diluent -= const_ppO2; // new in v.101 |
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diff
changeset
|
1176 pres_diluent /= N2_ratio + He_ratio; // new in v.101 |
321 | 1177 if( pres_diluent < 0.0 ) |
1178 pres_diluent = 0.0; | |
711
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diff
changeset
|
1179 if( pres_diluent > pres_respiration ) // new in v.101 |
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diff
changeset
|
1180 pres_diluent = pres_respiration; // new in v.101 |
307 | 1181 |
711
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diff
changeset
|
1182 char_O_diluent = (unsigned char)(pres_diluent/pres_respiration*100.0 + 0.5); |
322 | 1183 |
711
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changeset
|
1184 if( flush_ppO2 > 2.545) flush_ppO2 = 2.55; |
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diff
changeset
|
1185 if( flush_ppO2 < 0.0 ) flush_ppO2 = 0.0; |
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changeset
|
1186 char_O_flush_ppO2 = (unsigned char)(flush_ppO2*100.0 + 0.5); |
186 | 1187 } |
307 | 1188 |
310
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|
1189 if( pres_diluent > ppWater ) // new in v.101 |
711
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diff
changeset
|
1190 { |
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JeanDo <jd.gascuel@free.fr>
parents:
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diff
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|
1191 overlay float EAD, END; |
307 | 1192 |
310
b20fc8c4ac92
Fix EAD/END display (not mm, m with a trailling space)
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307
diff
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|
1193 ppN2 = N2_ratio * (pres_diluent - ppWater); // changed in v.101 |
711
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
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|
1194 ppHe = He_ratio * (pres_diluent - ppWater); // changed in v.101 |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1195 |
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parents:
710
diff
changeset
|
1196 // EAD : Equivalent Air Dive. Equivalent depth for the same N2 level |
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parents:
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diff
changeset
|
1197 // with plain air. |
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parents:
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diff
changeset
|
1198 // ppN2 = 79% * (P_EAD - ppWater) |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1199 // EAD = (P_EAD - Psurface) * 10 |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1200 // ie: EAD = (ppN2 / 0.7902 + ppWater -Psurface) * 10 |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1201 EAD = (ppN2 / 0.7902 + ppWater - pres_surface) * BAR_TO_METER; |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1202 if( EAD < 0.0 || EAD > 245.5 ) EAD = 0.0; |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1203 char_O_EAD = (unsigned char)(EAD + 0.5); |
307 | 1204 |
711
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1205 // END : Equivalent Narcotic Dive. |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1206 // 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:
710
diff
changeset
|
1207 // 0.23 btw). Hence the formula becomes: |
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1208 // END * BarPerMeter * (1.0 - 0.0) - ppWater + Psurface == Pambient - ppHe - ppWater |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1209 // ie: END = (Pambient - ppHe - Psurface) * BAR_TO_METER |
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parents:
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diff
changeset
|
1210 // |
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parents:
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diff
changeset
|
1211 // Source cited: |
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minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
1212 // The Physiology and Medicine of Diving by Peter Bennett and David Elliott, |
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1213 // 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
|
1214 END = (pres_respiration - ppHe - pres_surface) * BAR_TO_METER; |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1215 if( END < 0.0 || END > 245.5 ) END = 0.0; |
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1216 char_O_END = (unsigned char)(END + 0.5); |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1217 } |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1218 else // new in v.101 |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1219 { |
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1220 ppN2 = 0.0; // new in v.101 |
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1221 ppHe = 0.0; // new in v.101 |
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1222 char_O_EAD = char_O_END = 0; |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1223 } |
116 | 1224 |
711
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1225 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
|
1226 calc_tissue(0); |
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1227 else |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1228 calc_tissue(1); |
186 | 1229 |
192 | 1230 // Calc limit for surface, ie. GF_high. |
258 | 1231 calc_limit(); |
186 | 1232 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1233 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
|
1234 int_O_gtissue_press = (short)((pres_tissue_N2[char_O_gtissue_no] + pres_tissue_He[char_O_gtissue_no]) * 1000); |
171 | 1235 } |
1236 | |
116 | 1237 |
167 | 1238 ////////////////////////////////////////////////////////////////////////////// |
169
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diff
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|
1239 // Compute stops. |
711
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minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
1240 // |
169
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diff
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|
1241 // Note: because this can be very long, break on 16 iterations, and set state |
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168
diff
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|
1242 // 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
|
1243 // Note: because each iteration might be very long too (~ 66 ms in 1.84beta), |
257
f8f869bafd92
Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco()
JeanDo
parents:
252
diff
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|
1244 // break the loop when total time > 512msec. |
169
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diff
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|
1245 // |
116 | 1246 void calc_hauptroutine_calc_deco(void) |
1247 { | |
169
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168
diff
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|
1248 overlay unsigned char loop; |
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
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|
1249 |
711
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1250 for(loop = 0; loop < 16; ++loop) |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1251 { |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1252 // 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
|
1253 if( tmr3() & (512*32) ) |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1254 break; |
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1255 |
755 | 1256 if( calc_nextdecodepth() ) |
757 | 1257 { |
241 | 1258 if( temp_depth_limit == 0 ) |
1259 goto Surface; | |
116 | 1260 |
241 | 1261 //---- We hit a stop at temp_depth_limit --------------------- |
317 | 1262 temp_deco = temp_depth_limit * METER_TO_BAR // Convert to relative bar, |
757 | 1263 + pres_surface; // To absolute. |
471 | 1264 if( !update_deco_table() ) // Adds a one minute stops. |
1265 goto Surface; // Deco table full: abort... | |
241 | 1266 } |
1267 else | |
1268 { | |
1269 //---- No stop ----------------------------------------------- | |
317 | 1270 temp_deco -= (10*METER_TO_BAR); // Ascend 10m, no wait. |
169
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Merge decoplan display for both GF and Buhlmann models.
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diff
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|
1271 |
241 | 1272 //---- Finish computations once surface is reached ----------- |
1273 if( temp_deco <= pres_surface ) | |
1274 { | |
1275 Surface: | |
471 | 1276 if( char_O_deco_status == 1 ) // Don't in @+5min variant. |
711
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1277 copy_deco_table(); |
312
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New @5 variant: compute TTS if staying some extra time (CF58) at current depth.
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310
diff
changeset
|
1278 |
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310
diff
changeset
|
1279 calc_ascenttime(); |
471 | 1280 char_O_deco_status = 0; // calc nullzeit next time. |
1281 char_O_deco_last_stop = 0; // Surface reached (to animate menu) | |
755 | 1282 return; |
241 | 1283 } |
1284 } | |
1285 //---- Then update tissue -------------------------------------------- | |
203 | 1286 sim_dive_mins++; // Advance simulated time by 1 minute. |
241 | 1287 gas_switch_set(); // Apply any simulated gas change, once validated. |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1288 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
192 | 1289 sim_tissue(1); // Simulate compartiments for 1 minute. |
711
f555590f1419
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parents:
710
diff
changeset
|
1290 } |
169
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168
diff
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|
1291 |
711
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parents:
710
diff
changeset
|
1292 // Surface not reached, need more stops... for menu animation. |
278 | 1293 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
116 | 1294 } |
1295 | |
167 | 1296 ////////////////////////////////////////////////////////////////////////////// |
169
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168
diff
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|
1297 // Simulation ascention to first deco stop. |
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diff
changeset
|
1298 // |
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168
diff
changeset
|
1299 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
e26f49674956
Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1300 // there is no need to break on more that 16 iterations |
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168
diff
changeset
|
1301 // (or we are already in deep shit). |
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168
diff
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|
1302 // |
334
4ccdc72ec0e5
BUGFIX minor error in gas-switch algo (spurious surface decostop rarely added).
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326
diff
changeset
|
1303 // Input: pres_respiration |
4ccdc72ec0e5
BUGFIX minor error in gas-switch algo (spurious surface decostop rarely added).
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326
diff
changeset
|
1304 // Output: temp_deco |
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BUGFIX minor error in gas-switch algo (spurious surface decostop rarely added).
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326
diff
changeset
|
1305 // |
312
b7e4e74c0e17
New @5 variant: compute TTS if staying some extra time (CF58) at current depth.
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310
diff
changeset
|
1306 // if char_O_deco_status indicate @+5 variant, add extra time at current depth, |
b7e4e74c0e17
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310
diff
changeset
|
1307 // before ascent. |
169
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diff
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|
1308 void sim_ascent_to_first_stop(void) |
116 | 1309 { |
698 | 1310 overlay unsigned char fast = 1; // 1min or 2sec steps. |
1311 | |
171 | 1312 update_startvalues(); |
169
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168
diff
changeset
|
1313 clear_deco_table(); |
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diff
changeset
|
1314 |
711
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parents:
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diff
changeset
|
1315 temp_deco = pres_respiration; // Starts from current real depth. |
169
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diff
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|
1316 |
312
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diff
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|
1317 // Are we doing the special @+5min variation ? |
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310
diff
changeset
|
1318 if(char_O_deco_status & 4) |
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310
diff
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|
1319 sim_extra_time(); |
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diff
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|
1320 |
241 | 1321 //---- Loop until first stop, gas switch, or surface is reached ---------- |
711
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parents:
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diff
changeset
|
1322 for(;;) |
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parents:
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diff
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|
1323 { |
461 | 1324 overlay float old_deco = temp_deco; // Pamb backup (bars) |
460 | 1325 |
698 | 1326 // Try ascending 1 full minute (fast) or 2sec (!fast): |
1327 if( fast ) | |
1328 temp_deco -= 10*METER_TO_BAR; // 1 min, at 10m/min. ~ 1bar. | |
1329 else | |
1330 temp_deco -= (10.0/30.0)*METER_TO_BAR; // 2sec at 10m/min. | |
1331 | |
461 | 1332 if( temp_deco < pres_surface ) // But don't go over surface. |
1333 temp_deco = pres_surface; | |
203 | 1334 |
461 | 1335 // Recompute sim_lead_tissue_limit at GF_low (deepest stop), because |
1336 // one minute passed. | |
212 | 1337 sim_limit(GF_low); |
1338 | |
1339 // Did we reach deepest remaining stop ? | |
241 | 1340 if( temp_deco < sim_lead_tissue_limit ) |
212 | 1341 { |
461 | 1342 temp_deco = old_deco; // Restore last correct depth, |
698 | 1343 |
1344 if( fast ) | |
1345 { | |
1346 fast = 0; // Retry with 2sec steps. | |
1347 continue; | |
1348 } | |
1349 else | |
1350 break; // Done... | |
212 | 1351 } |
1352 | |
203 | 1353 // Did we reach surface ? |
460 | 1354 // NOTE: we should round BEFORE checking surface is reached. |
461 | 1355 temp_depth_limit = (unsigned char)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
1356 if( temp_depth_limit == 0 ) | |
203 | 1357 { |
1358 temp_deco = pres_surface; // Yes: finished ! | |
1359 break; | |
1360 } | |
169
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|
1361 |
241 | 1362 // Check for gas change below new depth ? |
1363 if( gas_switch_deepest() ) | |
1364 { | |
334
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326
diff
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|
1365 assert( temp_depth_limit > 0); |
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|
1366 |
317 | 1367 temp_deco = temp_depth_limit * METER_TO_BAR + pres_surface; |
212 | 1368 break; |
241 | 1369 } |
171 | 1370 |
698 | 1371 if( fast ) |
1372 sim_dive_mins++; // Advance simulated time by 1 minute. | |
241 | 1373 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
698 | 1374 sim_tissue(fast); // and update tissues for 1 min. |
711
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|
1375 } |
167 | 1376 } |
116 | 1377 |
167 | 1378 ////////////////////////////////////////////////////////////////////////////// |
312
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changeset
|
1379 // Simulation extra time at the current depth. |
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|
1380 // |
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|
1381 // This routine is used for @+5min feature. |
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|
1382 void sim_extra_time(void) |
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|
1383 { |
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|
1384 overlay unsigned char extra = read_custom_function(58); |
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|
1385 do { |
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|
1386 sim_dive_mins++; // Advance simulated time by 1 minute. |
711
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diff
changeset
|
1387 sim_tissue(1); // and update tissues for 1 min. |
312
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|
1388 } while( --extra != 0 ); |
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|
1389 } |
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|
1390 |
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1391 ////////////////////////////////////////////////////////////////////////////// |
167 | 1392 // calc_tissue |
1393 // | |
116 | 1394 // optimized in v.101 |
167 | 1395 // |
184 | 1396 static void calc_tissue(PARAMETER unsigned char period) |
116 | 1397 { |
251 | 1398 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
1399 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
236 | 1400 |
338 | 1401 for (ci=0;ci<NUM_COMP;ci++) |
126 | 1402 { |
258 | 1403 read_buhlmann_times(period); // 2 sec or 1 min period. |
116 | 1404 |
126 | 1405 // N2 |
339 | 1406 temp_tissue = (ppN2 - pres_tissue_N2[ci]) * var_N2_e; |
126 | 1407 temp_tissue_safety(); |
339 | 1408 pres_tissue_N2[ci] += temp_tissue; |
165 | 1409 |
126 | 1410 // He |
339 | 1411 temp_tissue = (ppHe - pres_tissue_He[ci]) * var_He_e; |
126 | 1412 temp_tissue_safety(); |
339 | 1413 pres_tissue_He[ci] += temp_tissue; |
192 | 1414 } |
167 | 1415 } |
116 | 1416 |
167 | 1417 ////////////////////////////////////////////////////////////////////////////// |
192 | 1418 // calc_limit |
167 | 1419 // |
192 | 1420 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
167 | 1421 // |
258 | 1422 static void calc_limit(void) |
167 | 1423 { |
192 | 1424 char_O_gtissue_no = 255; |
1425 calc_lead_tissue_limit = 0.0; | |
1426 | |
338 | 1427 for(ci=0; ci<NUM_COMP;ci++) |
192 | 1428 { |
339 | 1429 overlay float N2 = pres_tissue_N2[ci]; |
1430 overlay float He = pres_tissue_He[ci]; | |
293
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1431 overlay float p = N2 + He; |
192 | 1432 |
258 | 1433 read_buhlmann_coefficients(); |
293
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1434 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1435 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
116 | 1436 |
192 | 1437 // Apply the Eric Baker's varying gradient factor correction. |
1438 // Note: the correction factor depends both on GF and b, | |
1439 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1440 // so that can change who is the leading gas... | |
1441 // Note: Also depends of the GF. So the calcul is different for | |
1442 // GF_low, current GF, or GF_high... | |
1443 // *BUT* calc_tissue() is used to compute bottom time, | |
1444 // hence what would happend at surface, | |
1445 // hence at GF_high. | |
509 | 1446 if( char_I_deco_model != 0 ) |
258 | 1447 p = ( p - var_N2_a * GF_high) * var_N2_b |
1448 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
192 | 1449 else |
1450 p = (p - var_N2_a) * var_N2_b; | |
258 | 1451 if( p < 0.0 ) p = 0.0; |
192 | 1452 |
1453 if( p > calc_lead_tissue_limit ) | |
1454 { | |
1455 char_O_gtissue_no = ci; | |
1456 calc_lead_tissue_limit = p; | |
1457 } | |
1458 } | |
197 | 1459 |
338 | 1460 assert( char_O_gtissue_no < NUM_COMP ); |
197 | 1461 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); |
167 | 1462 } |
1463 | |
1464 ////////////////////////////////////////////////////////////////////////////// | |
1465 // calc_nullzeit | |
1466 // | |
1467 // calculates the remaining bottom time | |
1468 // | |
511
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1469 // NOTE: Erik Baker's closed formula works for Nitroxes. Trimix adds a second |
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1470 // exponential term to the M-value equation, making it impossible to |
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1471 // invert... So we have to make a fast-simu until we find a better way. |
509 | 1472 // |
1473 // Input: pres_respiration | |
1474 // Output: char_O_nullzeit | |
167 | 1475 // |
1476 static void calc_nullzeit(void) | |
1477 { | |
511
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1478 //---- Compute ppN2 and ppHe --------------------------------------------- |
509 | 1479 temp_deco = pres_respiration; |
1480 sim_alveolar_presures(); | |
167 | 1481 |
509 | 1482 char_O_nullzeit = 240; |
1483 for(ci=0; ci<NUM_COMP; ci++) | |
1484 { | |
511
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1485 //---- Read A/B values and loading factor for N2 and He -------------- |
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1486 overlay float tN2 = pres_tissue_N2[ci]; |
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1487 overlay float tHe = pres_tissue_He[ci]; |
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1488 overlay float t = tN2 + tHe; |
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1489 overlay unsigned char ndl; |
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1490 overlay unsigned char period = 10; |
192 | 1491 |
509 | 1492 read_buhlmann_coefficients(); |
511
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1493 read_buhlmann_times(2); // Starts with a 10min period. |
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1494 |
511
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1495 //---- Simulate for that tissue -------------------------------------- |
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1496 // NOTE: No need to simulate for longuer than the already found NDL. |
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1497 for(ndl=0; ndl<char_O_nullzeit;) |
509 | 1498 { |
511
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1499 //---- Compute updated mix M-value at surface |
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1500 overlay float a = (var_N2_a * tN2 + var_He_a * tHe) / t; |
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1501 overlay float b = (var_N2_b * tN2 + var_He_b * tHe) / t; |
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1502 overlay float M0 = (a + pres_surface/b); |
116 | 1503 |
511
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1504 //---- Add 10min/1min to N2/He tissues |
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1505 overlay float dTN2 = (ppN2 - tN2) * var_N2_e; |
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1506 overlay float dTHe = (ppHe - tHe) * var_He_e; |
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1507 |
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1508 //---- Apply security margin when using the non-GF model |
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1509 if( char_I_deco_model == 0 ) |
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1510 { |
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1511 dTN2 *= float_saturation_multiplier; |
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1512 dTHe *= float_saturation_multiplier; |
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1513 } |
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1514 else // Or GF-based model |
509 | 1515 M0 = GF_high * (M0 - pres_surface) + pres_surface; |
167 | 1516 |
511
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1517 //---- Simulate off-gasing while going to surface |
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1518 // TODO ! |
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1519 // dTN2 -= exp( ... ascent time ... ppN2...) |
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1520 // dTHe -= exp( ... ascent time ... ppHe...) |
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1521 |
534
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1522 //---- Ok now, and still ok to surface after 1 or 10 minutes ? |
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1523 if( (t <= M0) && (t + dTN2 + dTHe <= M0) ) |
509 | 1524 { |
511
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1525 tN2 += dTN2; // YES: apply gas loadings, |
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1526 tHe += dTHe; |
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1527 t = tN2 + tHe; |
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1528 ndl += period; // increment NDL, |
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1529 continue; // and loop. |
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1530 } |
116 | 1531 |
511
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1532 //---- Should we retry with smaller steps ? |
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1533 if( period == 10 ) |
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1534 { |
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1535 read_buhlmann_times(1); // 1min coefs. |
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1536 period = 1; |
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1537 continue; |
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1538 } |
167 | 1539 |
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1540 //---- ELSE make a linear approx for the last minute |
524 | 1541 // Usefull to have a meaningfull rounding of NDL. |
1542 // But ONLY it positive (negativ casted to unsigned is bad). | |
1543 if( M0 > t ) | |
1544 ndl += (unsigned char)(0.5f + (M0-t)/(dTN2+dTHe)); | |
511
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1545 break; |
509 | 1546 } |
511
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1547 |
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1548 // Keep the shortest NDL found |
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1549 if( ndl < char_O_nullzeit ) |
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1550 char_O_nullzeit = ndl; |
339 | 1551 } |
167 | 1552 } |
116 | 1553 |
167 | 1554 ////////////////////////////////////////////////////////////////////////////// |
1555 // calc_ascenttime | |
1556 // | |
312
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1557 // Summup ascent from bottom to surface, at 1 bar/min, 1min for last 3 meters, |
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1558 // and all stops. |
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1559 // |
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1560 // Result in int_O_ascenttime, or int_O_extra_ascenttime if in @+5min variant. |
169
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1561 static void calc_ascenttime(void) |
116 | 1562 { |
323 | 1563 overlay unsigned char x; |
1564 overlay unsigned short sum; | |
168 | 1565 |
323 | 1566 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
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1567 overlay float ascent = pres_respiration - pres_surface + 0.7; |
323 | 1568 if (ascent < 0.0) |
1569 ascent = 0.0; | |
1570 sum = (unsigned short)(ascent + 0.99); | |
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1571 |
338 | 1572 for(x=0; x<NUM_STOPS && internal_deco_depth[x]; x++) |
323 | 1573 sum += (unsigned short)internal_deco_time[x]; |
1574 | |
1575 if( char_O_deco_status == 1 ) | |
1576 int_O_ascenttime = sum; | |
126 | 1577 else |
323 | 1578 int_O_extra_ascenttime = sum; |
167 | 1579 } |
116 | 1580 |
167 | 1581 ////////////////////////////////////////////////////////////////////////////// |
1582 // update_startvalues | |
1583 // | |
116 | 1584 // updated in v.102 |
167 | 1585 // |
116 | 1586 void update_startvalues(void) |
1587 { | |
167 | 1588 overlay unsigned char x; |
116 | 1589 |
201 | 1590 // Start ascent simulation with current tissue partial pressures. |
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1591 for(x=0; x<NUM_COMP; x++) |
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1592 { |
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1593 sim_pres_tissue_N2[x] = pres_tissue_N2[x]; |
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1594 sim_pres_tissue_He[x] = pres_tissue_He[x]; |
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1595 } |
197 | 1596 |
201 | 1597 // No leading tissue (yet) for this ascent simulation. |
197 | 1598 sim_lead_tissue_limit = 0.0; |
1599 sim_lead_tissue_no = 255; | |
167 | 1600 } |
116 | 1601 |
167 | 1602 ////////////////////////////////////////////////////////////////////////////// |
192 | 1603 // sim_tissue |
167 | 1604 // |
116 | 1605 // optimized in v.101 |
167 | 1606 // |
1607 // Function very simular to calc_tissue, but: | |
1608 // + Use a 1min or 10min period. | |
1609 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
184 | 1610 static void sim_tissue(PARAMETER unsigned char period) |
116 | 1611 { |
251 | 1612 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
1613 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
236 | 1614 |
338 | 1615 for(ci=0; ci<NUM_COMP; ci++) |
126 | 1616 { |
258 | 1617 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
165 | 1618 |
126 | 1619 // N2 |
339 | 1620 temp_tissue = (ppN2 - sim_pres_tissue_N2[ci]) * var_N2_e; |
126 | 1621 temp_tissue_safety(); |
339 | 1622 sim_pres_tissue_N2[ci] += temp_tissue; |
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1623 |
126 | 1624 // He |
339 | 1625 temp_tissue = (ppHe - sim_pres_tissue_He[ci]) * var_He_e; |
126 | 1626 temp_tissue_safety(); |
339 | 1627 sim_pres_tissue_He[ci] += temp_tissue; |
192 | 1628 } |
167 | 1629 } |
116 | 1630 |
167 | 1631 ////////////////////////////////////////////////////////////////////////////// |
192 | 1632 // sim_limit() |
1633 // | |
1634 // New in v.111 | |
1635 // | |
1636 // Function separated from sim_tissue() to allow recomputing limit on | |
1637 // different depth, because it depends on current gradient factor. | |
167 | 1638 // |
192 | 1639 static void sim_limit(PARAMETER float GF_current) |
116 | 1640 { |
212 | 1641 assert( 0.0 < GF_current && GF_current <= 1.0f); |
1642 | |
192 | 1643 sim_lead_tissue_limit = 0.0; |
212 | 1644 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
192 | 1645 |
338 | 1646 for(ci=0; ci<NUM_COMP; ci++) |
192 | 1647 { |
339 | 1648 overlay float N2 = sim_pres_tissue_N2[ci]; |
1649 overlay float He = sim_pres_tissue_He[ci]; | |
241 | 1650 overlay float p = N2 + He; |
192 | 1651 |
258 | 1652 read_buhlmann_coefficients(); |
241 | 1653 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
1654 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
192 | 1655 |
1656 // Apply the Eric Baker's varying gradient factor correction. | |
1657 // Note: the correction factor depends both on GF and b, | |
1658 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1659 // so that can change who is the leading gas... | |
1660 // Note: Also depends of the GF_current... | |
509 | 1661 if( char_I_deco_model != 0 ) |
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1662 p = ( p - var_N2_a * GF_current) |
302 | 1663 / (GF_current / var_N2_b + 1.0 - GF_current); |
192 | 1664 else |
1665 p = (p - var_N2_a) * var_N2_b; | |
1666 | |
1667 if( p > sim_lead_tissue_limit ) | |
1668 { | |
1669 sim_lead_tissue_no = ci; | |
1670 sim_lead_tissue_limit = p; | |
1671 } | |
1672 } // for ci | |
197 | 1673 |
338 | 1674 assert( sim_lead_tissue_no < NUM_COMP ); |
237 | 1675 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
167 | 1676 } |
116 | 1677 |
167 | 1678 ////////////////////////////////////////////////////////////////////////////// |
169
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diff
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|
1679 // clear_deco_table |
167 | 1680 // |
1681 // unchanged in v.101 | |
1682 // | |
169
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diff
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|
1683 static void clear_deco_table(void) |
116 | 1684 { |
169
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diff
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|
1685 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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|
1686 |
338 | 1687 for(x=0; x<NUM_STOPS; ++x) |
169
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168
diff
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|
1688 { |
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168
diff
changeset
|
1689 internal_deco_time [x] = 0; |
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168
diff
changeset
|
1690 internal_deco_depth[x] = 0; |
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168
diff
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|
1691 } |
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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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diff
changeset
|
1693 |
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Merge decoplan display for both GF and Buhlmann models.
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diff
changeset
|
1694 ////////////////////////////////////////////////////////////////////////////// |
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diff
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|
1695 // update_deco_table |
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diff
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|
1696 // |
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168
diff
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|
1697 // Add 1 min to current stop. |
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diff
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|
1698 // |
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Merge decoplan display for both GF and Buhlmann models.
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168
diff
changeset
|
1699 // Inputs: |
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168
diff
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|
1700 // temp_depth_limit = stop's depth, in meters. |
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diff
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|
1701 // In/Out: |
275
4310ab395dbe
Keep low_depth in float 32bits (w/o rounding) for a better stability.
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270
diff
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|
1702 // 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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168
diff
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|
1703 // internal_deco_time [] : time (in minutes) of each stops. |
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diff
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|
1704 // |
471 | 1705 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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|
1706 { |
192 | 1707 overlay unsigned char x; |
247
ce869aad7440
BUGFIX Count gas switch delay down during ascent (bug bb26)
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parents:
241
diff
changeset
|
1708 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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241
diff
changeset
|
1709 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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|
1710 |
338 | 1711 for(x=0; x<NUM_STOPS; ++x) |
192 | 1712 { |
212 | 1713 // 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
|
1714 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); |
212 | 1715 |
766
3b1af9891019
BUGFIX: CNS calculation in decoplan should track gas (no marked changes anymore)
JeanDo
parents:
757
diff
changeset
|
1716 if( internal_deco_depth[x]== temp_depth_limit ) |
192 | 1717 { |
1718 // Do not overflow (max 255') | |
711
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1719 if( internal_deco_time[x] < 255 ) |
192 | 1720 { |
1721 internal_deco_time[x]++; | |
471 | 1722 return 1; |
192 | 1723 } |
1724 // But store extra in the next stop... | |
169
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168
diff
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|
1725 } |
192 | 1726 |
169
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168
diff
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|
1727 if( internal_deco_depth[x] == 0 ) |
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diff
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|
1728 { |
192 | 1729 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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|
1730 |
169
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diff
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|
1731 internal_deco_time[x] = 1; |
757 | 1732 internal_deco_gas[x] = sim_gas_last_used; |
471 | 1733 return 1; |
169
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diff
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|
1734 } |
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diff
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|
1735 } |
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diff
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|
1736 |
192 | 1737 // Can't store stops at more than 96m. |
1738 // Or stops at less that 3m too. | |
169
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diff
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|
1739 // Just do nothing with that... |
471 | 1740 return 0; |
167 | 1741 } |
116 | 1742 |
167 | 1743 ////////////////////////////////////////////////////////////////////////////// |
1744 // calc_gradient_factor | |
1745 // | |
165 | 1746 // optimized in v.101 (var_N2_a) |
116 | 1747 // new code in v.102 |
167 | 1748 // |
1749 static void calc_gradient_factor(void) | |
116 | 1750 { |
197 | 1751 overlay float gf; |
339 | 1752 overlay float N2 = pres_tissue_N2[char_O_gtissue_no]; |
1753 overlay float He = pres_tissue_He[char_O_gtissue_no]; | |
237 | 1754 |
338 | 1755 assert( char_O_gtissue_no < NUM_COMP ); |
237 | 1756 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
197 | 1757 |
711
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minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1758 // tissue > respiration (currently off-gasing) |
f555590f1419
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parents:
710
diff
changeset
|
1759 // GF = 0% when respiration == tissue, ie. bubbles are at equilibrium. |
f555590f1419
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parents:
710
diff
changeset
|
1760 // 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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|
1761 temp_tissue = N2 + He; |
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BUGFIX char_O_gradient_factor calculation in GF model.
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diff
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|
1762 if( temp_tissue <= pres_respiration ) |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
1763 gf = 0.0; |
197 | 1764 else |
1765 { | |
293
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
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diff
changeset
|
1766 overlay float limit = calc_lead_tissue_limit; |
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BUGFIX char_O_gradient_factor calculation in GF model.
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diff
changeset
|
1767 // 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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diff
changeset
|
1768 // correction due to gradient factor. To compute the actual |
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BUGFIX char_O_gradient_factor calculation in GF model.
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292
diff
changeset
|
1769 // current GF, we need to (re-)compute the raw ambiant-pressure |
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BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
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292
diff
changeset
|
1770 // limit from the Bühlmann model. |
509 | 1771 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
|
1772 { |
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BUGFIX char_O_gradient_factor calculation in GF model.
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diff
changeset
|
1773 ci = char_O_gtissue_no; |
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diff
changeset
|
1774 read_buhlmann_coefficients(); |
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diff
changeset
|
1775 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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diff
changeset
|
1776 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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diff
changeset
|
1777 limit = (temp_tissue - var_N2_a) * var_N2_b; |
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diff
changeset
|
1778 } |
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diff
changeset
|
1779 |
711
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minor cleanups for CNS/NOAA bugfix.
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parents:
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diff
changeset
|
1780 gf = (temp_tissue - pres_respiration) |
293
e0083f259552
BUGFIX char_O_gradient_factor calculation in GF model.
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parents:
292
diff
changeset
|
1781 / (temp_tissue - limit) |
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BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
parents:
292
diff
changeset
|
1782 * 100.0; |
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BUGFIX char_O_gradient_factor calculation in GF model.
JeanDo
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292
diff
changeset
|
1783 if( gf > 254.5 ) gf = 255.0; |
197 | 1784 if( gf < 0.0 ) gf = 0.0; |
1785 } | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1786 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
116 | 1787 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1788 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
|
1789 { |
197 | 1790 overlay float rgf; |
1791 | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1792 if( low_depth < 3 ) |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1793 rgf = GF_high; |
197 | 1794 else |
1795 { | |
317 | 1796 overlay float temp1 = low_depth * METER_TO_BAR; |
197 | 1797 overlay float temp2 = pres_respiration - pres_surface; |
186 | 1798 |
197 | 1799 if (temp2 <= 0) |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1800 rgf = GF_high; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1801 else if (temp2 >= temp1) |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1802 rgf = GF_low; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1803 else |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1804 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; |
197 | 1805 } |
186 | 1806 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1807 rgf = gf / rgf; // gf is already in percent |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1808 if( rgf < 0.0 ) rgf = 0.0; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1809 if( rgf > 254.5 ) rgf = 255.0; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1810 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
|
1811 } // calc relative gradient factor |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1812 else |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1813 { |
186 | 1814 char_O_relative_gradient_GF = char_O_gradient_factor; |
711
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parents:
710
diff
changeset
|
1815 } |
167 | 1816 } |
116 | 1817 |
167 | 1818 ////////////////////////////////////////////////////////////////////////////// |
1819 // deco_calc_desaturation_time | |
1820 // | |
116 | 1821 // FIXED N2_ratio |
1822 // 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
|
1823 // Inputs: int_I_pres_surface, ppWater, char_I_desaturation_multiplier |
233 | 1824 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] |
167 | 1825 // |
116 | 1826 void deco_calc_desaturation_time(void) |
1827 { | |
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
|
1828 RESET_C_STACK |
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116
diff
changeset
|
1829 |
233 | 1830 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
1831 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
1832 | |
237 | 1833 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
233 | 1834 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
|
1835 ppN2 = N2_ratio * (pres_surface - ppWater); |
126 | 1836 int_O_desaturation_time = 0; |
491
560764da0629
BUGFIX Surface desat factor missing for Interval planning in GF mode.
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parents:
490
diff
changeset
|
1837 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
233 | 1838 |
339 | 1839 for(ci=0; ci<NUM_COMP; ci++) |
126 | 1840 { |
251 | 1841 overlay unsigned short desat_time; // For a particular compartiment, in min. |
1842 overlay float temp1; | |
1843 overlay float temp2; | |
1844 overlay float temp3; | |
1845 overlay float temp4; | |
338 | 1846 |
509 | 1847 read_buhlmann_ht(); |
338 | 1848 |
126 | 1849 // saturation_time (for flight) and N2_saturation in multiples of halftime |
1850 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
1851 // 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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diff
changeset
|
1852 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
126 | 1853 // N2 |
339 | 1854 temp1 = 1.05 * ppN2 - pres_tissue_N2[ci]; |
1855 temp2 = ppN2 - pres_tissue_N2[ci]; | |
126 | 1856 if (temp2 >= 0.0) |
233 | 1857 temp1 = 0.0; |
126 | 1858 else |
1859 temp1 = temp1 / temp2; | |
711
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diff
changeset
|
1860 |
251 | 1861 if( 0.0 < temp1 && temp1 < 1.0 ) |
126 | 1862 { |
260
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258
diff
changeset
|
1863 // 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
|
1864 // minus because log is negative. |
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258
diff
changeset
|
1865 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
509 | 1866 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
|
1867 |
126 | 1868 } |
1869 else | |
1870 { | |
233 | 1871 temp1 = 0.0; |
1872 temp2 = 0.0; | |
126 | 1873 } |
116 | 1874 |
126 | 1875 // He |
339 | 1876 temp3 = 0.1 - pres_tissue_He[ci]; |
126 | 1877 if (temp3 >= 0.0) |
233 | 1878 temp3 = 0.0; |
126 | 1879 else |
339 | 1880 temp3 = - temp3 / pres_tissue_He[ci]; |
601
d1719622111e
Minor LLVM compatibility cleanups.
JeanDo <jd.gascuel@free.fr>
parents:
581
diff
changeset
|
1881 |
251 | 1882 if( 0.0 < temp3 && temp3 < 1.0 ) |
711
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parents:
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diff
changeset
|
1883 { |
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parents:
710
diff
changeset
|
1884 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
|
1885 // 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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parents:
710
diff
changeset
|
1886 // minus because log is negative |
f555590f1419
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JeanDo <jd.gascuel@free.fr>
parents:
710
diff
changeset
|
1887 temp4 = var_He_ht * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
f555590f1419
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parents:
710
diff
changeset
|
1888 } |
126 | 1889 else |
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1890 { |
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1891 temp3 = 0.0; |
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1892 temp4 = 0.0; |
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1893 } |
116 | 1894 |
126 | 1895 // saturation_time (for flight) |
1896 if (temp4 > temp2) | |
203 | 1897 desat_time = (unsigned short)temp4; |
126 | 1898 else |
203 | 1899 desat_time = (unsigned short)temp2; |
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1900 |
251 | 1901 if(desat_time > int_O_desaturation_time) |
1902 int_O_desaturation_time = desat_time; | |
116 | 1903 |
126 | 1904 // N2 saturation in multiples of halftime for display purposes |
339 | 1905 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
1906 temp2 = temp2 + 80.0; // set center | |
126 | 1907 if (temp2 < 0.0) |
1908 temp2 = 0.0; | |
1909 if (temp2 > 255.0) | |
1910 temp2 = 255.0; | |
339 | 1911 char_O_tissue_N2_saturation[ci] = (char)temp2; |
233 | 1912 |
126 | 1913 // He saturation in multiples of halftime for display purposes |
339 | 1914 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
1915 temp4 = temp4 + 80.0; // set center | |
126 | 1916 if (temp4 < 0.0) |
1917 temp4 = 0.0; | |
1918 if (temp4 > 255.0) | |
1919 temp4 = 255.0; | |
339 | 1920 char_O_tissue_He_saturation[ci] = (char)temp4; |
126 | 1921 } // for |
167 | 1922 } |
116 | 1923 |
167 | 1924 ////////////////////////////////////////////////////////////////////////////// |
1925 // calc_wo_deco_step_1_min | |
1926 // | |
116 | 1927 // FIXED N2 Ratio |
1928 // optimized in v.101 (...saturation_multiplier) | |
1929 // desaturation slowed down to 70,42% | |
167 | 1930 // |
1931 static void calc_wo_deco_step_1_min(void) | |
116 | 1932 { |
251 | 1933 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
1934 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
1935 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
1936 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
1937 | |
126 | 1938 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
368 | 1939 pres_respiration = pres_surface = int_I_pres_surface * 0.001; |
1940 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
200 | 1941 ppHe = 0.0; |
491
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1942 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
197 | 1943 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
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1944 |
339 | 1945 calc_tissue(1); // update the pressure in the tissues N2/He in accordance with the new ambient pressure |
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1946 |
169
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1947 clear_deco_table(); |
200 | 1948 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
126 | 1949 char_O_nullzeit = 0; |
168 | 1950 int_O_ascenttime = 0; |
323 | 1951 int_O_extra_ascenttime = 0; |
126 | 1952 calc_gradient_factor(); |
167 | 1953 } |
126 | 1954 |
167 | 1955 ////////////////////////////////////////////////////////////////////////////// |
368 | 1956 // calc_dive_interval |
1957 // | |
1958 // Prepare tissue for delay before the next dive simulation. | |
1959 // | |
1960 // Inputs: char_I_dive_interval == delay before dive (in 10' steps). | |
1961 // Outputs: pres_tissue_N2/He[], CNS_fraction | |
1962 // | |
1963 // Should be protected by deco_push_tissues_to_vault(), | |
1964 // deco_pull_tissues_from_vault() | |
1965 // | |
1966 // desaturation slowed down to 70,42%. | |
1967 // | |
511
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1968 static void calc_dive_interval(void) |
368 | 1969 { |
1970 overlay unsigned char t; | |
491
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1971 overlay unsigned char backup_model; |
368 | 1972 |
1973 //---- Initialize simulation parameters ---------------------------------- | |
1974 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann | |
1975 pres_respiration = pres_surface = int_I_pres_surface * 0.001; | |
1976 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
1977 ppHe = 0.0; | |
491
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1978 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
368 | 1979 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
1980 | |
568 | 1981 // Make sure SURFACE_DESAT_FACTOR is applied: |
491
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1982 backup_model = char_I_deco_model; |
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1983 char_I_deco_model = 0; |
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1984 |
368 | 1985 //---- Perform simulation ------------------------------------------------ |
1986 for(t=0; t<char_I_dive_interval; ++t) | |
1987 { | |
1988 calc_tissue(2); // period = 10min. | |
1989 CNS_fraction = 0.92587471 * CNS_fraction; // Half-time = 90min: (1/2)^(1/9) | |
1990 } | |
514 | 1991 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
1992 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); | |
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1993 |
491
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1994 //---- Restore model ----------------------------------------------------- |
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1995 char_I_deco_model = backup_model; |
368 | 1996 } |
1997 | |
1998 ////////////////////////////////////////////////////////////////////////////// | |
167 | 1999 ////////////////////////////////////////////////////////////////////////////// |
2000 ////////////////////////////////// deco_hash ///////////////////////////////// | |
2001 ////////////////////////////////////////////////////////////////////////////// | |
2002 ////////////////////////////////////////////////////////////////////////////// | |
126 | 2003 |
184 | 2004 #ifndef CROSS_COMPILE |
116 | 2005 void deco_hash(void) |
2006 { | |
167 | 2007 overlay unsigned char md_i, md_j; // Loop index. |
2008 overlay unsigned char md_t; | |
2009 overlay unsigned char md_buffer[16]; | |
2010 overlay unsigned char md_temp; | |
203 | 2011 overlay unsigned short md_pointer; |
167 | 2012 |
122
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2013 RESET_C_STACK |
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2014 |
126 | 2015 // init |
164 | 2016 for(md_i=0;md_i<16;md_i++) |
126 | 2017 { |
2018 md_state[md_i] = 0; | |
164 | 2019 char_O_hash[md_i] = 0; |
126 | 2020 } // for md_i 16 |
116 | 2021 |
126 | 2022 _asm |
167 | 2023 movlw 0x01 // md_pi address. |
2024 movwf TBLPTRU,0 | |
2025 movlw 0x7E | |
2026 movwf TBLPTRH,0 | |
2027 movlw 0x00 | |
2028 movwf TBLPTRL,0 | |
126 | 2029 _endasm; |
165 | 2030 md_i = 0; |
2031 do { | |
126 | 2032 _asm |
2033 TBLRDPOSTINC | |
2034 movff TABLAT,md_temp | |
2035 _endasm | |
165 | 2036 md_pi_subst[md_i++] = md_temp; |
2037 } while( md_i != 0 ); | |
2038 | |
126 | 2039 _asm |
167 | 2040 movlw 0x00 |
2041 movwf TBLPTRU,0 | |
2042 movlw 0x00 | |
2043 movwf TBLPTRH,0 | |
2044 movlw 0x00 | |
2045 movwf TBLPTRL,0 | |
126 | 2046 _endasm |
167 | 2047 |
126 | 2048 // cycle buffers |
2049 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
2050 { | |
2051 md_t = 0; | |
2052 for (md_i=0;md_i<16;md_i++) | |
2053 { | |
2054 if(md_pointer == 9) | |
164 | 2055 md_temp = char_O_hash[md_i]; |
126 | 2056 else |
2057 { | |
2058 _asm | |
167 | 2059 TBLRDPOSTINC |
2060 movff TABLAT,md_temp | |
126 | 2061 _endasm |
2062 } // else | |
167 | 2063 |
2064 md_buffer[md_i] = md_temp; | |
186 | 2065 md_state[md_i+16] = md_temp; |
2066 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
126 | 2067 } // for md_i 16 |
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|
2068 |
126 | 2069 for (md_i=0;md_i<18;md_i++) |
2070 { | |
2071 for (md_j=0;md_j<48;md_j++) | |
2072 { | |
167 | 2073 md_state[md_j] ^= md_pi_subst[md_t]; |
126 | 2074 md_t = md_state[md_j]; |
2075 } // for md_j 48 | |
2076 md_t = (unsigned char)(md_t+1); | |
2077 } // for md_i 18 | |
164 | 2078 md_t = char_O_hash[15]; |
711
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|
2079 |
126 | 2080 for (md_i=0;md_i<16;md_i++) |
2081 { | |
167 | 2082 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
164 | 2083 md_t = char_O_hash[md_i]; |
126 | 2084 } // for md_i 16 |
2085 } // for md_pointer | |
116 | 2086 } // void deco_hash(void) |
184 | 2087 #endif |
116 | 2088 |
167 | 2089 ////////////////////////////////////////////////////////////////////////////// |
2090 // deco_clear_CNS_fraction | |
2091 // | |
116 | 2092 // new in v.101 |
167 | 2093 // |
116 | 2094 void deco_clear_CNS_fraction(void) |
2095 { | |
122
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2096 RESET_C_STACK |
237 | 2097 |
126 | 2098 CNS_fraction = 0.0; |
2099 char_O_CNS_fraction = 0; | |
167 | 2100 } |
116 | 2101 |
167 | 2102 ////////////////////////////////////////////////////////////////////////////// |
2103 // deco_calc_CNS_fraction | |
2104 // | |
439
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2105 // Input: char_I_actual_ppO2 : Current condition (in decibars). |
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2106 // char_I_step_is_1min : use 1min or 10min steps instead of 2sec. |
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2107 // CNS_fraction : velue before period. |
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2108 // Output: CNS_fraction, char_O_CNS_fraction |
167 | 2109 // |
116 | 2110 void deco_calc_CNS_fraction(void) |
2111 { | |
711
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|
2112 overlay float time_factor = 1.0f; |
126 | 2113 RESET_C_STACK |
167 | 2114 |
471 | 2115 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
237 | 2116 assert( char_I_actual_ppO2 > 15 ); |
2117 | |
439
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2118 if( char_I_step_is_1min == 1 ) |
292 | 2119 time_factor = 30.0f; |
439
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2120 else if( char_I_step_is_1min == 2 ) |
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|
2121 time_factor = 300.0f; |
710 | 2122 //------------------------------------------------------------------------ |
2123 // Don't increase CNS below 0.5 bar, but keep it steady. | |
126 | 2124 if (char_I_actual_ppO2 < 50) |
292 | 2125 ; // no changes |
710 | 2126 //------------------------------------------------------------------------ |
2127 // Below (and including) 1.60 bar | |
711
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|
2128 else if (char_I_actual_ppO2 < 61) |
710 | 2129 CNS_fraction += time_factor/(-533.07 * char_I_actual_ppO2 + 54000.0); |
711
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diff
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|
2130 else if (char_I_actual_ppO2 < 71) |
710 | 2131 CNS_fraction += time_factor/(-444.22 * char_I_actual_ppO2 + 48600.0); |
711
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diff
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|
2132 else if (char_I_actual_ppO2 < 81) |
710 | 2133 CNS_fraction += time_factor/(-355.38 * char_I_actual_ppO2 + 42300.0); |
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diff
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|
2134 else if (char_I_actual_ppO2 < 91) |
710 | 2135 CNS_fraction += time_factor/(-266.53 * char_I_actual_ppO2 + 35100.0); |
711
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diff
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|
2136 else if (char_I_actual_ppO2 < 111) |
710 | 2137 CNS_fraction += time_factor/(-177.69 * char_I_actual_ppO2 + 27000.0); |
711
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diff
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|
2138 else if (char_I_actual_ppO2 < 152) |
710 | 2139 CNS_fraction += time_factor/( -88.84 * char_I_actual_ppO2 + 17100.0); |
711
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diff
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|
2140 else if (char_I_actual_ppO2 < 167) |
710 | 2141 CNS_fraction += time_factor/(-222.11 * char_I_actual_ppO2 + 37350.0); |
2142 //------------------------------------------------------------------------ | |
2143 // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity: | |
2144 // J Appl Physiol 92: 248–256, 2002, doi:10.1152/japplphysiol.00434.2001 | |
2145 // Formula (A1) based on value for 1.55 and c=20 | |
2146 // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
711
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minor cleanups for CNS/NOAA bugfix.
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diff
changeset
|
2147 else if (char_I_actual_ppO2 < 172) |
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diff
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|
2148 CNS_fraction += time_factor*0.00102; |
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diff
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|
2149 else if (char_I_actual_ppO2 < 177) |
292 | 2150 CNS_fraction += time_factor*0.00136; |
711
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|
2151 else if (char_I_actual_ppO2 < 182) |
292 | 2152 CNS_fraction += time_factor*0.00180; |
711
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|
2153 else if (char_I_actual_ppO2 < 187) |
292 | 2154 CNS_fraction += time_factor*0.00237; |
711
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|
2155 else if (char_I_actual_ppO2 < 192) |
292 | 2156 CNS_fraction += time_factor*0.00310; |
711
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|
2157 else if (char_I_actual_ppO2 < 198) |
292 | 2158 CNS_fraction += time_factor*0.00401; |
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2159 else if (char_I_actual_ppO2 < 203) |
292 | 2160 CNS_fraction += time_factor*0.00517; |
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2161 else if (char_I_actual_ppO2 < 233) |
292 | 2162 CNS_fraction += time_factor*0.0209; |
126 | 2163 else |
292 | 2164 CNS_fraction += time_factor*0.0482; // value for 2.5 |
116 | 2165 |
514 | 2166 if( CNS_fraction > 2.5 ) |
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2167 CNS_fraction = 2.55; |
514 | 2168 if( CNS_fraction < 0.0 ) |
126 | 2169 CNS_fraction = 0.0; |
2170 | |
443
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2171 char_O_CNS_fraction = (unsigned char)(100.0 * CNS_fraction + 0.5); |
167 | 2172 } |
116 | 2173 |
167 | 2174 ////////////////////////////////////////////////////////////////////////////// |
439
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2175 // deco_calc_CNS_planning |
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2176 // |
511
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2177 // Compute CNS during predicted ascent. |
488 | 2178 // |
711
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|
2179 // Note: Needs a call to deco_push_tissues_to_vault(), |
488 | 2180 // deco_pull_tissues_from_vault() to avoid trashing everything... |
2181 // | |
2182 // Input: CNS_fraction, char_O_deco_time[], char_O_deco_depth[] | |
2183 // Output: CNS_fraction, char_O_CNS_fraction | |
2184 // | |
439
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2185 void deco_calc_CNS_planning(void) |
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2186 { |
490
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|
2187 overlay unsigned char backup_gas_last_depth; |
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diff
changeset
|
2188 overlay unsigned char backup_gas_last_used; |
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changeset
|
2189 overlay unsigned short backup_dive_mins; |
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diff
changeset
|
2190 overlay unsigned char backup_actual_ppO2; |
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|
2191 |
439
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2192 RESET_C_STACK |
490
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|
2193 |
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2194 // Backup state machine |
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2195 backup_gas_last_depth = sim_gas_last_depth; |
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2196 backup_gas_last_used = sim_gas_last_used; |
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2197 backup_dive_mins = sim_dive_mins; |
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2198 backup_actual_ppO2 = char_I_actual_ppO2; |
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2199 |
439
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2200 // Uses 1min CNS period: |
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2201 char_I_step_is_1min = 1; |
711
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2202 |
439
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2203 //---- Retrieve bottom Gas used, and set variables. |
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2204 sim_gas_last_used = char_I_first_gas; |
443
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2205 sim_gas_last_depth = 0; // Surface gas marker. |
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2206 gas_switch_set(); // Sets initial calc_N2/He_ratio |
439
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2207 |
743 | 2208 //---- CCR mode : do the full CNS at once -------------------------------- |
439
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2209 if( char_I_const_ppO2 != 0 ) |
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2210 { |
443
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2211 overlay unsigned short t; // Needs 16bits here ! |
439
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2212 char_I_actual_ppO2 = char_I_const_ppO2; |
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2213 for(t=0; t<int_O_ascenttime; ++t) |
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2214 deco_calc_CNS_fraction(); |
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2215 } |
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2216 else //---- OC mode : have to follow all gas switches... ----------------- |
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2217 { |
443
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|
2218 overlay unsigned char i = 0; // Decostop loop counter |
439
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2219 overlay float actual_ppO2; |
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2220 overlay unsigned char time, t; |
563 | 2221 overlay unsigned char deepest_first = (read_custom_function(54) == 0); |
439
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2222 |
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|
2223 //---- Ascent to surface delay |
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2224 // NOTE: count as if time is spent with bottom pressure, |
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2225 // AND the bottom gas |
541
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2226 actual_ppO2 = (pres_surface + char_I_bottom_depth * METER_TO_BAR) |
439
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2227 * (1.0 - calc_N2_ratio - calc_He_ratio); |
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2228 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
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2229 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
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2230 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
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2231 |
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|
2232 // Ascent time (rounded up): |
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2233 time = (unsigned char)(0.1 * char_I_bottom_depth + 0.5); |
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2234 |
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2235 for(t=0; t<time; ++t) |
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2236 { |
439
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2237 deco_calc_CNS_fraction(); |
490
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2238 sim_dive_mins++; |
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2239 } |
439
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2240 |
563 | 2241 //---- Do all further stops ------------------------------------------ |
439
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2242 for(i=0; i<NUM_STOPS; ++i) |
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2243 { |
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2244 overlay unsigned char stop_gas; |
563 | 2245 |
2246 //---- Get next stop, possibly in reverse order ------------------ | |
2247 if( deepest_first ) | |
2248 { | |
2249 time = char_O_deco_time[i]; | |
2250 temp_depth_limit = char_O_deco_depth[i]; | |
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2251 stop_gas = char_O_deco_gas[i]; |
563 | 2252 } |
2253 else | |
2254 { | |
2255 time = char_O_deco_time[(NUM_STOPS-1)-i]; | |
2256 temp_depth_limit = char_O_deco_depth[(NUM_STOPS-1)-i]; | |
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2257 stop_gas = char_O_deco_gas[(NUM_STOPS-1)-i]; |
563 | 2258 } |
2259 if( time == 0 ) continue; | |
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2260 |
563 | 2261 //---- Gas Switch ? ---------------------------------------------- |
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2262 if( stop_gas != sim_gas_last_used ) |
563 | 2263 { |
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2264 sim_gas_last_depth = deco_gas_change[stop_gas-1]; |
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|
2265 sim_gas_last_used = stop_gas; |
563 | 2266 gas_switch_set(); |
2267 } | |
2268 | |
2269 //---- Convert Depth and N2_ratio to ppO2 ------------------------ | |
541
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|
2270 actual_ppO2 = (pres_surface + temp_depth_limit * METER_TO_BAR) |
439
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2271 * (1.0 - calc_N2_ratio - calc_He_ratio); |
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2272 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
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2273 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
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2274 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
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2275 |
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2276 //---- Apply the stop |
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2277 for(t=0; t<time; ++t) |
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2278 { |
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2279 deco_calc_CNS_fraction(); |
490
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|
2280 sim_dive_mins++; |
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|
2281 } |
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|
2282 } |
488 | 2283 } |
2284 | |
563 | 2285 //---- Back to normal mode... -------------------------------------------- |
488 | 2286 char_I_step_is_1min = 0; |
490
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|
2287 sim_gas_last_depth = backup_gas_last_depth; |
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|
2288 sim_gas_last_used = backup_gas_last_used; |
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2289 sim_dive_mins = backup_dive_mins; |
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2290 char_I_actual_ppO2 = backup_actual_ppO2; |
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|
2291 } |
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2292 |
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2293 ////////////////////////////////////////////////////////////////////////////// |
167 | 2294 // deco_calc_CNS_decrease_15min |
2295 // | |
116 | 2296 // new in v.101 |
167 | 2297 // |
116 | 2298 // calculates the half time of 90 minutes in 6 steps of 15 min |
200 | 2299 // (Used in sleepmode, for low battery mode). |
167 | 2300 // |
116 | 2301 // Output: char_O_CNS_fraction |
2302 // Uses and Updates: CNS_fraction | |
167 | 2303 // |
116 | 2304 void deco_calc_CNS_decrease_15min(void) |
2305 { | |
237 | 2306 RESET_C_STACK |
514 | 2307 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
237 | 2308 |
126 | 2309 CNS_fraction = 0.890899 * CNS_fraction; |
514 | 2310 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); |
167 | 2311 } |
116 | 2312 |
167 | 2313 ////////////////////////////////////////////////////////////////////////////// |
2314 // deco_calc_percentage | |
2315 // | |
116 | 2316 // new in v.101 |
167 | 2317 // |
116 | 2318 // calculates int_I_temp * char_I_temp / 100 |
2319 // output is int_I_temp | |
200 | 2320 // |
2321 // Used to compute NoFly remaining time. | |
222
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2322 // |
116 | 2323 void deco_calc_percentage(void) |
2324 { | |
122
3003a8040b78
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|
2325 RESET_C_STACK |
222
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2326 |
237 | 2327 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
564 | 2328 assert( int_I_temp < 5760 ); // Less than 4 days = 96h... |
237 | 2329 |
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2330 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
237 | 2331 |
554
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|
2332 assert( int_I_temp < 5760 ); // Less than 96h too... |
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2333 } |
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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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2336 ////////////////////////////////////////////////////////////////////////////// |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2337 // deco_gas_volumes |
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2338 // |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2339 // new in v.111 |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2340 // |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2341 // calculates volumes for each gas. |
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2342 // |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2343 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
240
d995e220ddac
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2344 // Gas list. |
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2345 // char_I_first_gas is the bottom gas. |
222
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2346 // decoplan (char_O_deco_depth, char_O_deco_time). |
234
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diff
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|
2347 // CF#54 == TRUE if shallowest stop first. |
478
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2348 // CF#56 == bottom liters/minutes (5 .. 50) or bar/min. |
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2349 // CF#57 == deco liters/minutes (5 .. 50) or bar/min. |
224 | 2350 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
222
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2351 // |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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2352 void deco_gas_volumes(void) |
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2353 { |
338 | 2354 overlay float volumes[NUM_GAS]; |
478
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2355 overlay float bottom_usage, deco_usage; |
234
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2356 overlay unsigned char i, deepest_first; |
646 | 2357 overlay unsigned char gas, depth; |
222
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2358 RESET_C_STACK |
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2359 |
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2360 //---- initialize with bottom consumption -------------------------------- |
338 | 2361 for(i=0; i<NUM_GAS; ++i) // Nothing yet... |
240
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BUGFIX Gas Usage when first gas is not #1 (bug BB22).
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2362 volumes[i] = 0.0; |
222
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2363 |
338 | 2364 assert(1 <= char_I_first_gas && char_I_first_gas <= NUM_GAS); |
241 | 2365 gas = char_I_first_gas - 1; |
2366 | |
478
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|
2367 bottom_usage = (float) read_custom_function(56); |
580
32448d5ca734
BUGFIX: GasVolume should not count bottom time/depth in CCR mode.
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changeset
|
2368 if( char_I_const_ppO2 == 0 && bottom_usage > 0.0 ) |
265 | 2369 volumes[gas] |
2370 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
2371 * char_I_bottom_time // in minutes. | |
2372 * bottom_usage; // In liter/minutes. | |
579
fff1d38625f0
BUGFIX: GasVolumes should check for a gas switch before the first stop.
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568
diff
changeset
|
2373 |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
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|
2374 //---- 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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|
2375 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
|
2376 deco_usage = (float) read_custom_function(57); // In liter/minutes. |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
JeanDo
parents:
218
diff
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|
2377 |
646 | 2378 depth = char_I_bottom_depth; |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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218
diff
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|
2379 |
338 | 2380 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
changeset
|
2381 { |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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646
diff
changeset
|
2382 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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|
2383 |
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BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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diff
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|
2384 // Manage stops in reverse order (CF#54) |
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2385 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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|
2386 { |
241 | 2387 time = char_O_deco_time[i]; |
234
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2388 if( time == 0 ) break; // End of table: done. |
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BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
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|
2389 |
766
3b1af9891019
BUGFIX: CNS calculation in decoplan should track gas (no marked changes anymore)
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757
diff
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|
2390 newDepth = char_O_deco_depth[i]; |
234
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233
diff
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|
2391 } |
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233
diff
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|
2392 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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|
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 time = char_O_deco_time[31-i]; |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2395 if( time == 0 ) continue; // not yet: still search table. |
234
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diff
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|
2396 |
766
3b1af9891019
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757
diff
changeset
|
2397 newDepth = char_O_deco_depth[31-i]; |
234
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233
diff
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|
2398 } |
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diff
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|
2399 |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2400 //---- Gas switch during this step ----------------------------------- |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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218
diff
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|
2401 { |
658
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2402 overlay unsigned char newGas = 0; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2403 overlay unsigned char newStop = 0; // NO CHANGE yet |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2404 overlay unsigned char j; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2405 |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
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diff
changeset
|
2406 for(j=0; j<NUM_GAS; ++j) |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2407 { |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2408 // Skip gas without changing depth: |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2409 if( ! char_I_deco_gas_change[j] ) |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2410 continue; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2411 // Select gas changed between [newDepth .. depth] |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2412 if( newDepth <= char_I_deco_gas_change[j] |
75dc320f4681
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parents:
646
diff
changeset
|
2413 && char_I_deco_gas_change[j] <= depth ) |
646 | 2414 { |
658
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parents:
646
diff
changeset
|
2415 // Keep the DEEPEST gas in that range: |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2416 // Note: that = means changing gas at BEGINNING of this stop. |
75dc320f4681
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JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2417 if( char_I_deco_gas_change[j] >= newStop ) |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2418 { |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2419 newGas = j; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2420 newStop = char_I_deco_gas_change[j]; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2421 } |
646 | 2422 } |
658
75dc320f4681
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parents:
646
diff
changeset
|
2423 } |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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218
diff
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|
2424 |
658
75dc320f4681
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parents:
646
diff
changeset
|
2425 if( newStop ) // Did we find something ? |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2426 { |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2427 // usage BEFORE gas switch (if any), at 10m/min : |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2428 if( deco_usage > 0.0 && depth > newStop ) |
75dc320f4681
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parents:
646
diff
changeset
|
2429 // Plus usage during ascent to the next stop, at 10m/min. |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2430 volumes[gas] += ((depth+newStop)*0.05 + 1.0) // average depth --> bar. |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2431 * (depth-newStop)*0.1 // metre --> min |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2432 * deco_usage; |
646 | 2433 |
658
75dc320f4681
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parents:
646
diff
changeset
|
2434 // Do gas switch: |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
JeanDo <jd.gascuel@free.fr>
parents:
646
diff
changeset
|
2435 gas = newGas; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2436 depth = newStop; |
75dc320f4681
BUGFIX Gas volumes when many tanks and stops.
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parents:
646
diff
changeset
|
2437 } |
75dc320f4681
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parents:
646
diff
changeset
|
2438 } |
646 | 2439 |
2440 // usage AFTER gas switch (if any), at 10m/min : | |
2441 if( depth > newDepth ) | |
2442 volumes[gas] += ((depth+newDepth)*0.05 + 1.0) // average depth --> bar. | |
2443 * (depth-newDepth)*0.1 // metre --> min | |
2444 * deco_usage; | |
2445 | |
2446 // Do stop: | |
2447 depth = newDepth; | |
2448 | |
2449 // Usage at stop: | |
478
fd8266b511cc
New SAC (CF56/CF57) in 5..50 l/min range (no more decimal).
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parents:
471
diff
changeset
|
2450 if( deco_usage > 0.0 ) |
265 | 2451 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. |
2452 * time // in minutes. | |
646 | 2453 * deco_usage; // in xxx / min @ 1bar. |
265 | 2454 else |
2455 volumes[gas] = 65535.0; | |
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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218
diff
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|
2456 } |
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
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|
2457 |
646 | 2458 // From last stop to surface |
2459 if( deco_usage > 0.0 ) | |
2460 volumes[gas] += (depth*0.05 + 1.0) // avg depth --> bar. | |
2461 * depth * 0.1 // time to surface, in minutes. | |
2462 * deco_usage; // in xxx / min @ 1bar. | |
2463 | |
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
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|
2464 //---- convert results for the ASM interface ----------------------------- |
338 | 2465 for(i=0; i<NUM_GAS; ++i) |
441
4826dd98514b
NEW: Decoplanner OC volumes in liters (or bars), up to 65000.
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439
diff
changeset
|
2466 if( volumes[i] > 65534.0 ) |
224 | 2467 int_O_gas_volumes[i] = 65535; |
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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218
diff
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|
2468 else |
441
4826dd98514b
NEW: Decoplanner OC volumes in liters (or bars), up to 65000.
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diff
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|
2469 int_O_gas_volumes[i] = (unsigned short)(volumes[i] + 0.5); |
116 | 2470 } |
2471 | |
167 | 2472 ////////////////////////////////////////////////////////////////////////////// |
2473 | |
116 | 2474 void deco_push_tissues_to_vault(void) |
2475 { | |
167 | 2476 overlay unsigned char x; |
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
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diff
changeset
|
2477 RESET_C_STACK |
167 | 2478 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
2479 cns_vault = CNS_fraction; |
697 | 2480 low_depth_vault = low_depth; |
2481 | |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
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diff
changeset
|
2482 for (x=0;x<NUM_COMP;x++) |
339 | 2483 { |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
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diff
changeset
|
2484 pres_tissue_N2_vault[x] = pres_tissue_N2[x]; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
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diff
changeset
|
2485 pres_tissue_He_vault[x] = pres_tissue_He[x]; |
339 | 2486 } |
116 | 2487 } |
167 | 2488 |
116 | 2489 void deco_pull_tissues_from_vault(void) |
2490 { | |
167 | 2491 overlay unsigned char x; |
122
3003a8040b78
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diff
changeset
|
2492 RESET_C_STACK |
167 | 2493 |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
2494 for (x=0; x<NUM_COMP; x++) |
339 | 2495 { |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
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diff
changeset
|
2496 pres_tissue_N2[x] = pres_tissue_N2_vault[x]; |
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
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diff
changeset
|
2497 pres_tissue_He[x] = pres_tissue_He_vault[x]; |
339 | 2498 } |
711
f555590f1419
minor cleanups for CNS/NOAA bugfix.
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parents:
710
diff
changeset
|
2499 |
292 | 2500 // Restore both CNS variable, too. |
2501 CNS_fraction = cns_vault; | |
514 | 2502 char_O_CNS_fraction = (unsigned char)(CNS_fraction * 100.0 + 0.5); |
697 | 2503 |
2504 // GF history too: | |
2505 low_depth = low_depth_vault; | |
2506 locked_GF_step = GF_delta / low_depth; | |
116 | 2507 } |
2508 | |
167 | 2509 ////////////////////////////////////////////////////////////////////////////// |
2510 // | |
184 | 2511 #ifndef CROSS_COMPILE |
2512 void main() {} | |
2513 #endif |