Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 509:103051b4d9c1
NEW NDL analytic model (Erik Baker's formula)
| author | JeanDo |
|---|---|
| date | Sun, 20 Nov 2011 23:14:18 +0100 |
| parents | 560764da0629 |
| children | 2a6293641d51 |
| rev | line source |
|---|---|
| 116 | 1 // ************************************************************** |
| 2 // p2_deco.c | |
| 3 // | |
| 4 // Created on: 12.05.2009 | |
| 5 // Author: chsw | |
| 6 // | |
| 7 // ************************************************************** | |
| 8 | |
| 9 ////////////////////////////////////////////////////////////////////////////// | |
| 10 // OSTC - diving computer code | |
| 11 // Copyright (C) 2008 HeinrichsWeikamp GbR | |
| 12 // | |
| 13 // This program is free software: you can redistribute it and/or modify | |
| 14 // it under the terms of the GNU General Public License as published by | |
| 15 // the Free Software Foundation, either version 3 of the License, or | |
| 16 // (at your option) any later version. | |
| 17 // | |
| 18 // This program is distributed in the hope that it will be useful, | |
| 19 // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 21 // GNU General Public License for more details. | |
| 22 // | |
| 23 // You should have received a copy of the GNU General Public License | |
| 24 // along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 25 // | |
| 26 ////////////////////////////////////////////////////////////////////////////// | |
| 27 | |
| 28 // ***************************** | |
| 29 // ** I N T R O D U C T I O N ** | |
| 30 // ***************************** | |
| 31 // | |
| 32 // OSTC | |
| 33 // | |
| 34 // code: | |
| 35 // p2_deco_main_c_v101.c | |
| 36 // part2 of the OSTC code | |
| 37 // code with constant O2 partial pressure routines | |
| 38 // under construction !! | |
| 39 // | |
| 40 // summary: | |
| 41 // decompression routines | |
| 42 // for the OSTC experimental project | |
| 43 // written by Christian Weikamp | |
| 44 // last revision __________ | |
| 45 // comments added _________ | |
| 46 // | |
| 47 // additional files: | |
| 48 // p2_tables_v100.romdata (other files) | |
| 49 // 18f4685_ostc_v100.lkr (linker script) | |
| 50 // | |
| 51 // history: | |
| 52 // 01/03/08 v100: first release candidate | |
| 53 // 03/13/08 v101: start of programming ppO2 code | |
| 54 // 03/13/25 v101a: backup of interrim version with ppO2 calculation | |
| 55 // 03/13/25 v101: open circuit gas change during deco | |
| 56 // 03/13/25 v101: CNS_fraction calculation | |
| 57 // 03/13/26 v101: optimization of tissue calc routines | |
| 58 // 07/xx/08 v102a: debug of bottom time routine | |
| 59 // 09/xx/08 v102d: Gradient Factor Model implemenation | |
| 60 // 10/10/08 v104: renamed to build v103 for v118 stable | |
| 171 | 61 // 10/14/08 v104: integration of char_I_depth_last_deco for Gradient Model |
| 116 | 62 // 03/31/09 v107: integration of FONT Incon24 |
| 63 // 05/23/10 v109: 5 gas changes & 1 min timer | |
| 64 // 07/13/10 v110: cns vault added | |
| 65 // 12/25/10 v110: split in three files (deco.c, main.c, definitions.h) | |
| 163 | 66 // 2011/01/20: [jDG] Create a common file included in ASM and C code. |
| 167 | 67 // 2011/01/23: [jDG] Added read_custom_function(). |
| 203 | 68 // 2011/01/24: [jDG] Make ascenttime an short. No more overflow! |
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69 // 2011/01/25: [jDG] Fusion deco array for both models. |
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70 // 2011/01/25: [jDG] Use CF(54) to reverse deco order. |
| 193 | 71 // 2011/02/11: [jDG] Reworked gradient-factor implementation. |
| 197 | 72 // 2011/02/13: [jDG] CF55 for additional gas switch delay in decoplan. |
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73 // 2011/02/15: [jDG] Fixed inconsistencies introduced by gas switch delays. |
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74 // 2011/03/21: [jDG] Added gas consumption (CF56 & CF57) evaluation for OCR mode. |
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75 // 2011/04/10: [jDG] Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco(). |
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76 // 2011/04/15: [jDG] Store low_depth in 32bits (w/o rounding), for a better stability. |
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77 // 2011/04/25: [jDG] Added 1mn mode for CNS calculation, to allow it for decoplanning. |
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78 // 2011/04/27: [jDG] Fixed char_O_gradient_factor calculation when model uses gradient-factor. |
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79 // 2011/05/02: [jDG] Added "Future TTS" function (CF58). |
| 338 | 80 // 2011/05/17: [jDG] Various cleanups. |
| 116 | 81 // |
| 167 | 82 // TODO: |
| 83 // + Allow to abort MD2 calculation (have to restart next time). | |
| 84 // | |
| 85 // Literature: | |
| 200 | 86 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 87 // 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 |
| 88 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 89 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 90 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 91 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 92 // |
| 93 // | |
| 116 | 94 |
| 95 // ********************* | |
| 96 // ** I N C L U D E S ** | |
| 97 // ********************* | |
| 98 #include <math.h> | |
| 167 | 99 |
| 192 | 100 // *********************************************** |
| 101 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 102 // *********************************************** | |
| 103 | |
| 104 #include "p2_definitions.h" | |
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105 #define TEST_MAIN |
| 509 | 106 #include "../OSTC_code_asm_part1/shared_definitions.h" |
| 192 | 107 |
| 200 | 108 // Water vapour partial pressure in the lumb. |
| 317 | 109 #define ppWater 0.0627 |
| 110 #define METER_TO_BAR 0.09985 | |
| 111 #define BAR_TO_METER 10.0150 // (1.0/METER_TO_BAR) | |
| 200 | 112 |
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113 // Surface security factor |
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114 #define SURFACE_DESAT_FACTOR 0.7042 |
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115 |
| 167 | 116 // ************************* |
| 117 // ** P R O T O T Y P E S ** | |
| 118 // ************************* | |
| 119 | |
| 120 static void calc_hauptroutine(void); | |
| 121 static void calc_nullzeit(void); | |
| 122 | |
| 192 | 123 static void calc_tissue(PARAMETER unsigned char period); |
| 258 | 124 static void calc_limit(void); |
| 192 | 125 |
| 167 | 126 static void clear_tissue(void); |
| 127 static void calc_ascenttime(void); | |
| 128 static void update_startvalues(void); | |
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129 static void clear_deco_table(void); |
| 471 | 130 static unsigned char update_deco_table(void); |
| 192 | 131 |
| 132 static void sim_tissue(PARAMETER unsigned char period); | |
| 133 static void sim_limit(PARAMETER float GF_current); | |
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134 static void sim_extra_time(void); |
| 368 | 135 static void calc_dive_interval(void); |
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136 |
| 167 | 137 static void calc_gradient_factor(void); |
| 138 static void calc_wo_deco_step_1_min(void); | |
| 139 | |
| 140 static void calc_hauptroutine_data_input(void); | |
| 141 static void calc_hauptroutine_update_tissues(void); | |
| 142 static void calc_hauptroutine_calc_deco(void); | |
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143 static void sim_ascent_to_first_stop(void); |
| 167 | 144 |
| 241 | 145 static unsigned char gas_switch_deepest(void); |
| 146 static void gas_switch_set(void); | |
| 217 | 147 |
| 241 | 148 static unsigned char calc_nextdecodepth(void); |
| 116 | 149 |
| 200 | 150 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 151 #pragma udata bank4=0x400 |
| 116 | 152 |
| 153 static float temp_limit; | |
| 154 static float GF_low; | |
| 155 static float GF_high; | |
| 156 static float GF_delta; | |
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157 static float low_depth; // Depth of deepest stop |
| 192 | 158 static float locked_GF_step; // GF_delta / low_depth |
| 159 | |
| 160 static unsigned char temp_depth_limit; | |
| 171 | 161 |
| 192 | 162 // Simulation context: used to predict ascent. |
| 163 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 164 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 165 |
| 192 | 166 // Real context: what we are doing now. |
| 167 static float calc_lead_tissue_limit; // | |
| 116 | 168 |
| 338 | 169 static unsigned char internal_deco_time[NUM_STOPS]; |
| 170 static unsigned char internal_deco_depth[NUM_STOPS]; | |
| 116 | 171 |
| 172 static float cns_vault; | |
| 339 | 173 static float pres_tissue_N2_vault[NUM_COMP]; |
| 174 static float pres_tissue_He_vault[NUM_COMP]; | |
| 116 | 175 |
| 163 | 176 //---- Bank 5 parameters ----------------------------------------------------- |
| 177 #pragma udata bank5=0x500 | |
| 178 | |
| 167 | 179 static unsigned char ci; |
| 116 | 180 static float pres_respiration; |
| 181 static float pres_surface; | |
| 182 static float temp_deco; | |
| 236 | 183 static float ppN2; |
| 200 | 184 static float ppHe; |
| 116 | 185 static float temp_tissue; |
| 200 | 186 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 187 static float He_ratio; // Breathed gas helium ratio. | |
| 188 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 189 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 190 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 191 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 192 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 193 static float var_He_e; // Exposition, for current He tissue. | |
| 509 | 194 static float var_N2_ht; // Half-time for current N2 tissue. |
| 195 static float var_He_ht; // Half-time for current N2 tissue. | |
| 116 | 196 |
| 338 | 197 static float pres_diluent; // new in v.101 |
| 198 static float const_ppO2; // new in v.101 | |
| 116 | 199 |
| 241 | 200 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
| 201 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
| 203 | 202 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 203 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 204 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 205 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 206 static float CNS_fraction; // new in v.101 | |
| 207 static float float_saturation_multiplier; // new in v.101 | |
| 208 static float float_desaturation_multiplier; // new in v.101 | |
| 338 | 209 static float float_deco_distance; // new in v.101 |
| 210 static char flag_in_divemode; // new in v.108 | |
| 167 | 211 |
| 338 | 212 static unsigned char deco_gas_change[NUM_GAS]; // new in v.109 |
| 167 | 213 |
| 163 | 214 //---- Bank 6 parameters ----------------------------------------------------- |
| 215 #pragma udata bank6=0x600 | |
| 116 | 216 |
| 339 | 217 float pres_tissue_N2[NUM_COMP]; |
| 218 float pres_tissue_He[NUM_COMP]; | |
| 509 | 219 float sim_pres_tissue_N2[NUM_COMP]; // 16 floats = 64 bytes. |
| 220 float sim_pres_tissue_He[NUM_COMP]; // 16 floats = 64 bytes. | |
| 116 | 221 |
| 163 | 222 //---- Bank 7 parameters ----------------------------------------------------- |
| 223 #pragma udata bank7=0x700 | |
| 509 | 224 // EMPTY ... |
| 116 | 225 |
| 163 | 226 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 227 #pragma udata bank8=0x800 |
| 163 | 228 |
| 116 | 229 static char md_pi_subst[256]; |
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230 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 231 |
| 163 | 232 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 233 #pragma udata bank9=0x900 |
| 116 | 234 |
| 163 | 235 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 236 |
| 164 | 237 // internal, dbg: |
| 167 | 238 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 239 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 240 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 224 | 241 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
| 242 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
| 164 | 243 static float DBG_pres_surface; // new in v.108 |
| 244 static float DBG_GF_low; // new in v.108 | |
| 245 static float DBG_GF_high; // new in v.108 | |
| 246 static float DBG_const_ppO2; // new in v.108 | |
| 247 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 248 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 249 static float DBG_float_deco_distance; // new in v.108 | |
| 250 static float DBG_N2_ratio; // new in v.108 | |
| 251 static float DBG_He_ratio; // new in v.108 | |
| 252 | |
| 167 | 253 ////////////////////////////////////////////////////////////////////////////// |
| 254 ////////////////////////////////////////////////////////////////////////////// | |
| 255 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 256 ////////////////////////////////////////////////////////////////////////////// | |
| 257 ////////////////////////////////////////////////////////////////////////////// | |
| 258 // | |
| 259 // End of PROM code is 17F00, So push tables on PROM top... | |
| 260 // | |
| 261 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 262 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 263 |
| 167 | 264 // Magic table to compute the MD2 HASH |
| 265 // | |
| 266 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 267 rom const rom unsigned short md_pi[] = |
| 116 | 268 { |
| 269 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 270 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 271 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 272 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 273 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 274 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 275 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 276 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 277 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 278 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 279 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 280 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 281 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 282 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 283 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 284 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 285 }; | |
| 286 | |
| 167 | 287 ////////////////////////////////////////////////////////////////////////////// |
| 288 ////////////////////////////////////////////////////////////////////////////// | |
| 289 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 290 ////////////////////////////////////////////////////////////////////////////// | |
| 291 ////////////////////////////////////////////////////////////////////////////// | |
| 292 // | |
| 116 | 293 // all new in v.102 |
| 294 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 295 | |
| 296 #pragma code p2_deco = 0x0C000 | |
| 297 | |
| 167 | 298 ////////////////////////////////////////////////////////////////////////////// |
| 299 // DBS - debug on start of dive | |
| 300 // | |
| 301 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 302 { |
| 167 | 303 overlay char i; // Local loop index. |
| 304 | |
| 305 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 306 int_O_DBS_bitfield = 0; |
| 307 int_O_DBS2_bitfield = 0; | |
| 308 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 309 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 310 else | |
| 311 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 312 int_O_DBG_post_bitfield = 0; | |
| 167 | 313 |
| 314 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 315 char_O_NDL_at_20mtr = 255; |
| 316 | |
| 167 | 317 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 318 DBG_N2_ratio = N2_ratio; |
| 319 DBG_He_ratio = He_ratio; | |
| 320 DBG_char_I_deco_model = char_I_deco_model; | |
| 321 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 322 DBG_pres_surface = pres_surface; | |
| 323 DBG_GF_low = GF_low; | |
| 324 DBG_GF_high = GF_high; | |
| 325 DBG_const_ppO2 = const_ppO2; | |
| 224 | 326 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 327 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 328 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 329 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 330 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 331 DBG_float_deco_distance = float_deco_distance; | |
| 332 | |
| 167 | 333 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 334 if(char_I_deco_model) |
| 335 int_O_DBS_bitfield |= DBS_mode; | |
| 336 if(const_ppO2) | |
| 337 int_O_DBS_bitfield |= DBS_ppO2; | |
| 339 | 338 for(i = 0; i < NUM_COMP; i++) |
| 339 if(pres_tissue_He[i]) | |
| 116 | 340 int_O_DBS_bitfield |= DBS_HE_sat; |
| 341 if(float_saturation_multiplier < 0.99) | |
| 342 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 343 if(float_saturation_multiplier > 1.3) | |
| 344 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 345 if(GF_low < 0.19) | |
| 346 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 347 if(GF_low > 1.01) | |
| 348 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 349 if(GF_high < 0.6) | |
| 350 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 351 if(GF_high > 1.01) | |
| 352 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 353 if((N2_ratio + He_ratio) > 0.95) | |
| 354 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 355 if((N2_ratio + He_ratio) < 0.05) | |
| 356 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 357 if(float_deco_distance > 0.25) | |
| 358 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 359 if(char_I_depth_last_deco > 8) | |
| 360 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 361 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 362 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 363 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 364 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 365 if(pres_respiration > 3.0) | |
| 366 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 367 if(pres_surface - pres_respiration > 0.2) | |
| 368 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 369 if(pres_surface < 0.75) | |
| 370 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 371 if(pres_surface > 1.11) | |
| 372 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 373 if(float_desaturation_multiplier < 0.70) | |
| 374 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 375 if(float_desaturation_multiplier > 1.01) | |
| 376 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 377 if(GF_low > GF_high) | |
| 378 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 379 } | |
| 380 | |
| 167 | 381 ////////////////////////////////////////////////////////////////////////////// |
| 382 // DBG - set DBG to end_of_dive | |
| 383 // | |
| 384 static void set_dbg_end_of_dive(void) | |
| 116 | 385 { |
| 386 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 387 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 388 } | |
| 389 | |
| 167 | 390 ////////////////////////////////////////////////////////////////////////////// |
| 391 // DBG - NDL at first 20 m. hit | |
| 392 // | |
| 393 static void check_ndl(void) | |
| 116 | 394 { |
| 167 | 395 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 396 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 397 ) | |
| 116 | 398 { |
| 167 | 399 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 400 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 401 char_O_NDL_at_20mtr = 254; |
| 116 | 402 } |
| 403 } | |
| 404 | |
| 167 | 405 ////////////////////////////////////////////////////////////////////////////// |
| 406 // DBG - multi main during dive | |
| 407 // | |
| 184 | 408 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 409 { |
| 203 | 410 overlay unsigned short temp_DBS = 0; |
| 200 | 411 overlay unsigned char i; // Local loop index. |
| 167 | 412 |
| 116 | 413 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 414 temp_DBS |= DBG_c_gas; | |
| 415 if(DBG_const_ppO2 != const_ppO2) | |
| 416 temp_DBS |= DBG_c_ppO2; | |
| 167 | 417 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 418 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 419 ) | |
| 116 | 420 temp_DBS |= DBG_CdeSAT; |
| 421 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 422 temp_DBS |= DBG_C_MODE; | |
| 423 if(DBG_pres_surface != pres_surface) | |
| 424 temp_DBS |= DBG_C_SURF; | |
| 167 | 425 |
| 426 if( !DBS_HE_sat && !He_ratio) | |
| 339 | 427 for(i = 0; i < NUM_COMP; i++) |
| 428 if(pres_tissue_He[i]) | |
| 116 | 429 temp_DBS |= DBG_HEwoHE; |
| 167 | 430 |
| 225 | 431 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 432 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 433 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 434 temp_DBS |= DBG_C_DGAS; |
| 167 | 435 |
| 116 | 436 if(DBG_float_deco_distance != float_deco_distance) |
| 437 temp_DBS |= DBG_C_DIST; | |
| 438 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 439 temp_DBS |= DBG_C_LAST; | |
| 167 | 440 if( DBG_GF_low != GF_low |
| 441 || DBG_GF_high != GF_high ) | |
| 116 | 442 temp_DBS |= DBG_C_GF; |
| 443 if(pres_respiration > 13.0) | |
| 444 temp_DBS |= DBG_PHIGH; | |
| 445 if(pres_surface - pres_respiration > 0.2) | |
| 446 temp_DBS |= DBG_PLOW; | |
| 447 if(is_post_check) | |
| 448 int_O_DBG_post_bitfield |= temp_DBS; | |
| 449 else | |
| 450 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 451 } | |
| 452 | |
| 167 | 453 ////////////////////////////////////////////////////////////////////////////// |
| 454 // DBG - prior to calc. of dive | |
| 455 // | |
| 456 static void check_pre_dbg(void) | |
| 116 | 457 { |
| 458 check_dbg(0); | |
| 459 } | |
| 460 | |
| 167 | 461 ////////////////////////////////////////////////////////////////////////////// |
| 462 // DBG - after decocalc of dive | |
| 463 // | |
| 464 static void check_post_dbg(void) | |
| 116 | 465 { |
| 466 check_dbg(1); | |
| 467 } | |
| 468 | |
| 165 | 469 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 470 ////////////////////////////////////////////////////////////////////////////// |
| 471 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 472 ////////////////////////////////////////////////////////////////////////////// | |
| 473 ////////////////////////////////////////////////////////////////////////////// | |
| 474 | |
| 235 | 475 ////////////////////////////////////////////////////////////////////////////// |
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476 // Bump to blue-screen when an assert is wrong |
| 235 | 477 #ifdef __DEBUG |
| 478 void assert_failed(PARAMETER short int line) | |
| 479 { | |
| 480 extern void PLED_resetdebugger(void); | |
| 481 extern unsigned short temp10; | |
| 482 | |
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483 temp10 = line; // Show source line number as stack depth. |
| 235 | 484 PLED_resetdebugger(); |
| 485 } | |
| 486 #endif | |
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487 |
| 235 | 488 ////////////////////////////////////////////////////////////////////////////// |
| 489 // When calling C code from ASM context, the data stack pointer and | |
| 490 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
| 491 | |
| 492 #ifdef CROSS_COMPILE | |
| 493 # define RESET_C_STACK | |
| 494 #else | |
| 495 # ifdef __DEBUG | |
| 496 # define RESET_C_STACK fillDataStack(); | |
| 497 void fillDataStack(void) | |
| 498 { | |
| 499 _asm | |
| 500 LFSR 1,C_STACK | |
| 501 MOVLW 0xCC | |
| 502 loop: MOVWF POSTINC1,0 | |
| 503 TSTFSZ FSR1L,0 | |
| 504 BRA loop | |
| 505 | |
| 506 LFSR 1,C_STACK | |
| 507 LFSR 2,C_STACK | |
| 508 _endasm | |
| 509 } | |
| 510 # else | |
| 511 # define RESET_C_STACK \ | |
| 512 _asm \ | |
| 513 LFSR 1, C_STACK \ | |
| 514 LFSR 2, C_STACK \ | |
| 515 _endasm | |
| 516 # endif | |
| 517 #endif | |
| 518 | |
| 519 ////////////////////////////////////////////////////////////////////////////// | |
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520 // Read CF values from the C code. |
| 235 | 521 |
| 488 | 522 #ifdef CROSS_COMPILE |
| 523 // Full description of the OSTC EEPROM map, including CF values. | |
| 524 # include "OSTC_eeprom.h" | |
| 525 #endif | |
| 526 | |
| 203 | 527 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 528 { |
| 184 | 529 #ifdef CROSS_COMPILE |
| 488 | 530 return (cf & 32) ? eeprom.bank1_CF[cf-32].value |
| 531 : eeprom.bank0_CF[cf ].value; | |
| 184 | 532 #else |
| 167 | 533 extern unsigned char hi, lo; |
| 534 extern void getcustom15(); | |
| 535 _asm | |
| 536 movff cf,WREG | |
| 537 call getcustom15,0 | |
| 538 movff lo,PRODL | |
| 539 movff hi,PRODH | |
| 540 _endasm | |
| 184 | 541 #endif |
| 167 | 542 } |
| 543 | |
| 544 ////////////////////////////////////////////////////////////////////////////// | |
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545 // Fast subroutine to read RTC timer 3. |
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546 // Note: result is in 1/32 of msecs. |
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547 static unsigned short tmr3(void) |
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548 { |
| 261 | 549 #ifndef CROSS_COMPILE |
|
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550 _asm |
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551 movff 0xfb2,PRODL // TMR3L |
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552 movff 0xfb3,PRODH // TMR3H |
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553 _endasm // result in PRODH:PRODL. |
| 261 | 554 #else |
| 555 return 0; | |
| 556 #endif | |
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557 } |
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558 |
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559 ////////////////////////////////////////////////////////////////////////////// |
| 258 | 560 // read buhlmann tables A and B for compatriment ci |
| 561 // | |
| 562 static void read_buhlmann_coefficients(void) | |
| 165 | 563 { |
| 338 | 564 |
| 184 | 565 #ifndef CROSS_COMPILE |
| 167 | 566 // Note: we don't use far rom pointer, because the |
| 338 | 567 // 24 bits is too complex, hence we have to set |
| 167 | 568 // the UPPER page ourself... |
| 569 // --> Set zero if tables are moved to lower pages ! | |
| 570 _asm | |
| 571 movlw 1 | |
| 572 movwf TBLPTRU,0 | |
| 573 _endasm | |
| 184 | 574 #endif |
| 258 | 575 |
| 338 | 576 assert( 0 <= ci && ci < NUM_COMP ); |
| 577 | |
| 578 // Use an interleaved array (AoS) to access coefficients with a | |
| 579 // single addressing. | |
| 580 { | |
| 581 overlay rom const float* ptr = &buhlmann_ab[4*ci]; | |
| 582 var_N2_a = *ptr++; | |
| 583 var_N2_b = *ptr++; | |
| 584 var_He_a = *ptr++; | |
| 585 var_He_b = *ptr++; | |
| 586 } | |
| 167 | 587 |
| 165 | 588 // Check reading consistency: |
| 589 if( (var_N2_a < 0.231) | |
| 590 || (var_N2_a > 1.27) | |
| 591 || (var_N2_b < 0.504) | |
| 592 || (var_N2_b > 0.966) | |
| 593 || (var_He_a < 0.510) | |
| 594 || (var_He_a > 1.75) | |
| 595 || (var_He_b < 0.423) | |
| 596 || (var_He_b > 0.927) | |
| 597 ) | |
| 258 | 598 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; |
| 599 } | |
| 600 | |
| 601 ////////////////////////////////////////////////////////////////////////////// | |
| 602 // read buhlmann tables for compatriment ci | |
| 603 // If period == 0 : 2sec interval | |
| 604 // 1 : 1 min interval | |
| 605 // 2 : 10 min interval. | |
| 606 static void read_buhlmann_times(PARAMETER char period) | |
| 607 { | |
| 608 #ifndef CROSS_COMPILE | |
| 609 // Note: we don't use far rom pointer, because the | |
| 610 // 24 bits is to complex, hence we have to set | |
| 611 // the UPPER page ourself... | |
| 612 // --> Set zero if tables are moved to lower pages ! | |
| 613 _asm | |
| 614 movlw 1 | |
| 615 movwf TBLPTRU,0 | |
| 616 _endasm | |
| 617 #endif | |
| 338 | 618 |
| 619 assert( 0 <= ci && ci < NUM_COMP ); | |
| 258 | 620 |
| 165 | 621 // Integration intervals. |
| 167 | 622 switch(period) |
| 165 | 623 { |
| 624 case 0: //---- 2 sec ----------------------------------------------------- | |
| 338 | 625 { |
| 626 overlay rom const float* ptr = &e2secs[2*ci]; | |
| 627 var_N2_e = *ptr++; | |
| 628 var_He_e = *ptr++; | |
| 629 } | |
| 165 | 630 |
| 631 // Check reading consistency: | |
| 632 if( (var_N2_e < 0.0000363) | |
| 633 || (var_N2_e > 0.00577) | |
| 634 || (var_He_e < 0.0000961) | |
| 635 || (var_He_e > 0.150) | |
| 636 ) | |
| 637 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 638 | |
| 639 break; | |
| 640 | |
| 641 case 1: //---- 1 min ----------------------------------------------------- | |
| 338 | 642 { |
| 643 overlay rom const float* ptr = &e1min[2*ci]; | |
| 644 var_N2_e = *ptr++; | |
| 645 var_He_e = *ptr++; | |
| 646 } | |
| 165 | 647 |
| 648 // Check reading consistency: | |
| 649 if( (var_N2_e < 1.09E-3) | |
| 650 || (var_N2_e > 0.1592) | |
| 651 || (var_He_e < 0.00288) | |
| 652 || (var_He_e > 0.3682) | |
| 653 ) | |
| 654 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 655 | |
| 656 break; | |
| 657 | |
| 658 case 2: //---- 10 min ---------------------------------------------------- | |
| 338 | 659 { |
| 660 overlay rom const float* ptr = &e10min[2*ci]; | |
| 661 var_N2_e = *ptr++; | |
| 662 var_He_e = *ptr++; | |
| 663 } | |
| 165 | 664 |
| 665 // Check reading consistency: | |
| 666 if( (var_N2_e < 0.01085) | |
| 667 || (var_N2_e > 0.82323) | |
| 668 || (var_He_e < 0.02846) | |
| 669 || (var_He_e > 0.98986) | |
| 670 ) | |
| 671 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 672 | |
| 673 break; | |
| 197 | 674 |
| 675 default: | |
| 676 assert(0); // Never go there... | |
| 165 | 677 } |
| 678 } | |
| 679 | |
| 680 ////////////////////////////////////////////////////////////////////////////// | |
| 509 | 681 // read buhlmann tables for compatriment ci |
| 682 // | |
| 683 static void read_buhlmann_ht(void) | |
| 684 { | |
| 685 | |
| 686 #ifndef CROSS_COMPILE | |
| 687 // Note: we don't use far rom pointer, because the | |
| 688 // 24 bits is to complex, hence we have to set | |
| 689 // the UPPER page ourself... | |
| 690 // --> Set zero if tables are moved to lower pages ! | |
| 691 _asm | |
| 692 movlw 1 | |
| 693 movwf TBLPTRU,0 | |
| 694 _endasm | |
| 695 #endif | |
| 696 | |
| 697 assert( 0 <= ci && ci < NUM_COMP ); | |
| 698 { | |
| 699 overlay rom const float* ptr = &buhlmann_ht[2*ci]; | |
| 700 var_N2_ht = *ptr++; | |
| 701 var_He_ht = *ptr++; | |
| 702 } | |
| 703 | |
| 704 assert( 4.0 <= var_N2_ht && var_N2_ht <= 635.0 ); | |
| 705 assert( 1.5099 <= var_He_ht && var_He_ht <= 240.03 ); | |
| 706 } | |
| 707 | |
| 708 ////////////////////////////////////////////////////////////////////////////// | |
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709 // calc_nextdecodepth |
| 165 | 710 // |
| 116 | 711 // new in v.102 |
| 165 | 712 // |
| 116 | 713 // INPUT, changing during dive: |
| 509 | 714 // temp_deco |
| 192 | 715 // low_depth |
| 167 | 716 // |
| 116 | 717 // INPUT, fixed during dive: |
| 167 | 718 // pres_surface |
| 719 // GF_delta | |
| 720 // GF_high | |
| 721 // GF_low | |
| 171 | 722 // char_I_depth_last_deco |
| 167 | 723 // float_deco_distance |
| 724 // | |
| 241 | 725 // RETURN TRUE iff a stop is needed. |
| 726 // | |
| 116 | 727 // OUTPUT |
| 171 | 728 // locked_GF_step |
| 167 | 729 // temp_depth_limt |
| 192 | 730 // low_depth |
| 167 | 731 // |
| 241 | 732 static unsigned char calc_nextdecodepth(void) |
| 167 | 733 { |
| 241 | 734 //--- Max ascent speed --------------------------------------------------- |
| 735 // Recompute leading gas limit, at current depth: | |
| 317 | 736 overlay float depth = (temp_deco - pres_surface) * BAR_TO_METER; |
| 241 | 737 |
| 738 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
| 302 | 739 overlay float min_depth = (depth > 10.0) ? (depth - 10.0) : 0.0; |
| 241 | 740 |
| 741 // Do we need to stop at current depth ? | |
| 742 overlay unsigned char need_stop = 0; | |
| 743 | |
| 744 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
| 745 | |
| 212 | 746 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 509 | 747 if( char_I_deco_model != 0 ) |
| 116 | 748 { |
| 241 | 749 if( depth >= low_depth ) |
| 192 | 750 sim_limit( GF_low ); |
| 751 else | |
| 752 sim_limit( GF_high - depth * locked_GF_step ); | |
| 753 | |
| 754 // Stops are needed ? | |
| 755 if( sim_lead_tissue_limit > pres_surface ) | |
| 756 { | |
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757 // Compute tolerated depth, for the leading tissue [metre]: |
| 317 | 758 overlay float depth_tol = (sim_lead_tissue_limit - pres_surface) * BAR_TO_METER; |
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759 |
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760 // Deepest stop, in multiples of 3 metres. |
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761 overlay unsigned char first_stop = 3 * (short)(0.99999 + depth_tol * 0.33333 ); |
| 192 | 762 assert( first_stop < 128 ); |
| 171 | 763 |
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764 // Is it a new deepest needed stop ? If yes this is the reference for |
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765 // the varying gradient factor. So reset that: |
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766 if( depth_tol > min_depth && depth_tol > low_depth ) |
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767 { |
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768 // Store the deepest stop depth, as reference for GF_low. |
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769 low_depth = depth_tol; |
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770 locked_GF_step = GF_delta / low_depth; |
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771 } |
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772 |
| 264 | 773 #if defined(__DEBUG) || defined(CROSS_COMPILE) |
| 261 | 774 { |
| 775 // Extra testing code to make sure the first_stop formula | |
| 776 // and rounding provides correct depth: | |
| 317 | 777 overlay float pres_stop = first_stop * METER_TO_BAR |
| 261 | 778 + pres_surface; |
| 779 | |
| 780 // Keep GF_low until a first stop depth is found: | |
| 781 if( first_stop >= low_depth ) | |
| 782 sim_limit( GF_low ); | |
| 783 else | |
| 784 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 785 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 786 sim_limit( GF_high - first_stop * locked_GF_step ); | |
| 787 | |
| 302 | 788 // upper limit (lowest pressure tolerated), + 1mbar for rounding...: |
| 789 assert( sim_lead_tissue_limit < (pres_stop + 0.001) ); | |
| 261 | 790 } |
| 791 #endif | |
| 792 | |
| 212 | 793 // Apply correction for the shallowest stop. |
| 192 | 794 if( first_stop == 3 ) // new in v104 |
| 795 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 796 |
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797 // Because gradient factor at first_stop might be bigger than at |
| 261 | 798 // current depth, we might ascent a bit more. |
| 799 // Hence, check all stops until one is indeed higher than tolerated presure: | |
| 800 while(first_stop > 0) | |
| 192 | 801 { |
| 802 overlay unsigned char next_stop; // Next index (0..30) | |
| 803 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 804 |
| 241 | 805 // Check max speed, or reaching surface. |
| 806 if( first_stop <= min_depth ) | |
| 807 break; | |
| 808 | |
| 809 // So, there is indeed a stop needed: | |
| 810 need_stop = 1; | |
| 811 | |
| 192 | 812 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 813 next_stop = 0; | |
| 216 | 814 else if( first_stop == 6 ) |
| 815 next_stop = char_I_depth_last_deco; | |
| 192 | 816 else |
| 817 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 818 |
| 317 | 819 pres_stop = next_stop * METER_TO_BAR |
| 192 | 820 + pres_surface; |
| 821 | |
| 212 | 822 // Keep GF_low until a first stop depth is found: |
| 823 if( next_stop >= low_depth ) | |
| 824 sim_limit( GF_low ); | |
| 825 else | |
| 826 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 827 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 828 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 829 |
| 192 | 830 // upper limit (lowest pressure tolerated): |
| 831 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 832 break; | |
| 833 | |
| 834 // Else, validate that stop and loop... | |
| 835 first_stop = next_stop; | |
| 212 | 836 } |
| 837 | |
| 838 // next stop is the last validated depth found, aka first_stop | |
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839 temp_depth_limit = first_stop; // Stop depth, in metre. |
| 192 | 840 } |
| 171 | 841 else |
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842 temp_depth_limit = 0; // stop depth, in metre. |
| 116 | 843 } |
| 167 | 844 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 845 { |
| 192 | 846 overlay float pres_gradient; |
| 847 | |
| 848 // Original model | |
| 116 | 849 // optimized in v.101 |
| 171 | 850 // char_I_depth_last_deco included in v.101 |
| 116 | 851 |
| 192 | 852 // Compute sim_lead_tissue_limit too, but just once. |
| 853 sim_limit(1.0); | |
| 854 | |
| 855 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 856 if (pres_gradient >= 0) |
| 116 | 857 { |
| 317 | 858 pres_gradient *= BAR_TO_METER/3; // Bar --> stop number; |
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859 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
| 241 | 860 need_stop = 1; // Hit. |
| 861 | |
| 862 // Implement last stop at 4m/5m/6m... | |
| 863 if( temp_depth_limit == 3 ) | |
| 864 temp_depth_limit = char_I_depth_last_deco; | |
| 171 | 865 } |
| 116 | 866 else |
| 241 | 867 temp_depth_limit = 0; |
| 171 | 868 } |
| 212 | 869 |
| 217 | 870 //---- Check gas change -------------------------------------------------- |
| 241 | 871 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
| 872 | |
| 873 return need_stop; | |
| 167 | 874 } |
| 116 | 875 |
| 167 | 876 ////////////////////////////////////////////////////////////////////////////// |
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877 // copy_deco_table |
| 167 | 878 // |
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879 // Buffer the stops, once computed, so we can continue to display them |
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880 // while computing the next set. |
| 167 | 881 // |
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882 static void copy_deco_table(void) |
| 116 | 883 { |
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884 // Copy depth of the first (deepest) stop, because when reversing |
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885 // order, it will be hard to find... |
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886 char_O_first_deco_depth = internal_deco_depth[0] & 0x7F; |
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887 char_O_first_deco_time = internal_deco_time [0]; |
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888 |
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889 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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890 { |
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891 overlay unsigned char x, y; |
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892 |
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893 //---- First: search the first non-null depth |
| 339 | 894 for(x=(NUM_STOPS-1); x != 0; --x) |
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895 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 896 |
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897 //---- Second: copy to output table (in reverse order) |
| 338 | 898 for(y=0; y<NUM_STOPS; y++, --x) |
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899 { |
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900 char_O_deco_depth[y] = internal_deco_depth[x]; |
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901 char_O_deco_time [y] = internal_deco_time [x]; |
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902 |
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903 // Stop only once the last transfer is done. |
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904 if( x == 0 ) break; |
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905 } |
| 116 | 906 |
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907 //---- Third: fill table end with null |
| 339 | 908 for(y++; y<NUM_STOPS; y++) |
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909 { |
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910 char_O_deco_time [y] = 0; |
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911 char_O_deco_depth[y] = 0; |
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912 } |
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913 } |
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914 else //---- Straight copy ------------------------------------------------ |
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915 { |
| 167 | 916 overlay unsigned char x; |
| 917 | |
| 339 | 918 for(x=0; x<NUM_STOPS; x++) |
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919 { |
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920 char_O_deco_depth[x] = internal_deco_depth[x]; |
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921 char_O_deco_time [x] = internal_deco_time [x]; |
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922 } |
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923 } |
| 167 | 924 } |
| 116 | 925 |
| 167 | 926 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 927 // temp_tissue_safety // |
| 167 | 928 // |
| 116 | 929 // outsourced in v.102 |
| 167 | 930 // |
| 931 // Apply safety factors for brand ZH-L16 model. | |
| 932 // | |
| 933 static void temp_tissue_safety(void) | |
| 116 | 934 { |
| 197 | 935 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 936 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 937 | |
| 167 | 938 if( char_I_deco_model == 0 ) |
| 116 | 939 { |
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940 if( temp_tissue < 0.0 ) |
| 126 | 941 temp_tissue *= float_desaturation_multiplier; |
| 116 | 942 else |
| 126 | 943 temp_tissue *= float_saturation_multiplier; |
| 116 | 944 } |
| 167 | 945 } |
| 116 | 946 |
| 167 | 947 ////////////////////////////////////////////////////////////////////////////// |
| 948 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 949 // ** THE JUMP-IN CODE ** |
| 950 // ** for the asm code ** | |
| 167 | 951 ////////////////////////////////////////////////////////////////////////////// |
| 952 ////////////////////////////////////////////////////////////////////////////// | |
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953 |
| 167 | 954 ////////////////////////////////////////////////////////////////////////////// |
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955 // Called every 2 seconds during diving. |
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956 // update tissues every time. |
| 184 | 957 // |
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958 // Every 6 seconds (or slower when TTS > 16): |
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959 // - update deco table (char_O_deco_time/depth) with new values. |
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960 // - update ascent time, |
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961 // - set status to zero (so we can check there is new results). |
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962 // |
| 116 | 963 void deco_calc_hauptroutine(void) |
| 964 { | |
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965 RESET_C_STACK |
| 116 | 966 calc_hauptroutine(); |
| 967 int_O_desaturation_time = 65535; | |
| 968 } | |
| 969 | |
| 167 | 970 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 971 // Reset decompression model: |
| 972 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 973 // + Reset last stop to 0m | |
| 974 // + Reset all model output. | |
| 116 | 975 void deco_clear_tissue(void) |
| 976 { | |
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977 RESET_C_STACK |
| 116 | 978 clear_tissue(); |
| 979 } | |
| 980 | |
| 167 | 981 ////////////////////////////////////////////////////////////////////////////// |
| 278 | 982 // Called every 1 min during decoplanning. |
| 983 // Update tissues for 1 min. | |
| 984 // | |
| 985 void deco_calc_tissue(void) | |
| 986 { | |
| 987 RESET_C_STACK | |
| 988 calc_hauptroutine_update_tissues(); | |
| 989 } | |
| 990 | |
| 991 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 992 |
| 116 | 993 void deco_calc_wo_deco_step_1_min(void) |
| 994 { | |
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995 RESET_C_STACK |
| 116 | 996 calc_wo_deco_step_1_min(); |
| 997 deco_calc_desaturation_time(); | |
| 998 } | |
| 999 | |
| 167 | 1000 ////////////////////////////////////////////////////////////////////////////// |
| 1001 | |
| 368 | 1002 void deco_calc_dive_interval(void) |
| 1003 { | |
| 1004 RESET_C_STACK | |
| 1005 calc_dive_interval(); | |
| 1006 } | |
| 1007 | |
| 1008 ////////////////////////////////////////////////////////////////////////////// | |
| 1009 | |
| 116 | 1010 void deco_debug(void) |
| 1011 { | |
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1012 RESET_C_STACK |
| 116 | 1013 } |
| 1014 | |
| 241 | 1015 |
| 1016 ////////////////////////////////////////////////////////////////////////////// | |
| 1017 // Find current gas in the list (if any). | |
| 1018 // | |
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1019 // Input: char_I_current_gas. |
| 241 | 1020 // |
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1021 // Output: sim_gas_last_depth, temp_depth_limit. |
| 241 | 1022 // |
| 1023 static void gas_switch_find_current(void) | |
| 1024 { | |
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1025 assert( 0 <= char_I_current_gas && char_I_current_gas <= (NUM_GAS+1) ); |
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1026 |
| 388 | 1027 if( char_I_current_gas <= NUM_GAS ) // Gas1..Gas5 |
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1028 { |
| 388 | 1029 sim_gas_last_used = char_I_current_gas; |
| 1030 | |
| 1031 // Note: if current is first gas, we must find it, but not set | |
| 1032 // last depth change to surface. | |
| 1033 if( char_I_deco_gas_change[sim_gas_last_used-1] ) | |
| 1034 sim_gas_last_depth = char_I_deco_gas_change[sim_gas_last_used-1]; | |
| 241 | 1035 } |
| 388 | 1036 else |
| 1037 sim_gas_last_used = 0; // Gas 6 = manual set | |
| 241 | 1038 } |
| 1039 | |
| 167 | 1040 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 1041 // Find deepest available gas. |
| 201 | 1042 // |
| 241 | 1043 // Input: temp_depth_limit, |
| 1044 // deco_gas_change[] | |
| 1045 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
| 212 | 1046 // |
| 241 | 1047 // RETURNS TRUE if a stop is needed for gas switch. |
| 1048 // | |
| 1049 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
| 212 | 1050 // |
| 241 | 1051 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
| 1052 // are null), or during the ascent to make sure we are not passing a | |
| 1053 // stop (in which case both can be already set). | |
| 1054 // | |
| 1055 static unsigned char gas_switch_deepest(void) | |
| 201 | 1056 { |
| 241 | 1057 overlay unsigned char switch_deco = 0, switch_last = 0; |
| 201 | 1058 |
| 1059 if (char_I_const_ppO2 == 0) | |
| 1060 { | |
| 225 | 1061 overlay unsigned char j; |
| 1062 | |
| 241 | 1063 // Loop over all enabled gas, to find the deepest one, |
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1064 // above last used gas, but below temp_depth_limit. |
| 338 | 1065 for(j=0; j<NUM_GAS; ++j) |
| 225 | 1066 { |
| 241 | 1067 // Gas not (yet) allowed ? Skip ! |
| 1068 if( temp_depth_limit > deco_gas_change[j] ) | |
| 1069 continue; | |
| 1070 | |
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1071 // Gas deeper (or equal) than the current one ? Skip ! |
| 241 | 1072 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) |
| 1073 continue; | |
| 1074 | |
| 1075 // First, or deeper ? | |
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1076 if( switch_deco < deco_gas_change[j] ) |
| 241 | 1077 { |
| 1078 switch_deco = deco_gas_change[j]; | |
| 388 | 1079 switch_last = j+1; // 1..5 |
| 241 | 1080 } |
| 225 | 1081 } |
| 201 | 1082 } |
| 1083 | |
| 203 | 1084 // If there is a better gas available |
| 241 | 1085 if( switch_deco ) |
| 201 | 1086 { |
| 241 | 1087 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
| 201 | 1088 |
| 241 | 1089 // Should restart gas-switch delay only when gas do changes... |
| 1090 assert( sim_gas_delay <= sim_dive_mins ); | |
| 217 | 1091 |
| 241 | 1092 sim_gas_last_depth = switch_deco; |
| 1093 sim_gas_last_used = switch_last; | |
| 1094 sim_gas_delay = read_custom_function(55); | |
| 217 | 1095 |
| 241 | 1096 // Apply depth correction ONLY if CF#55 is not null: |
| 1097 if( sim_gas_delay > 0 ) | |
| 225 | 1098 { |
| 241 | 1099 sim_gas_delay += sim_dive_mins; |
| 1100 temp_depth_limit = switch_deco; | |
| 1101 return 1; | |
| 225 | 1102 } |
| 241 | 1103 |
| 1104 return 0; | |
| 217 | 1105 } |
| 1106 | |
| 241 | 1107 sim_gas_delay = 0; |
| 1108 return 0; | |
| 217 | 1109 } |
| 1110 | |
| 1111 ////////////////////////////////////////////////////////////////////////////// | |
| 1112 // Calculate gas switches | |
| 1113 // | |
| 1114 // | |
| 1115 // Input: N2_ratio, He_ratio. | |
| 1116 // sim_gas_last_used | |
| 1117 // | |
| 1118 // Output: calc_N2_ratio, calc_He_ratio | |
| 1119 // | |
| 241 | 1120 static void gas_switch_set(void) |
| 217 | 1121 { |
| 338 | 1122 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= NUM_GAS ); |
| 217 | 1123 |
| 388 | 1124 if( sim_gas_last_used == 0 ) // Gas6 = manualy set gas. |
| 224 | 1125 { |
| 1126 calc_N2_ratio = N2_ratio; | |
| 1127 calc_He_ratio = He_ratio; | |
| 1128 } | |
| 1129 else | |
| 1130 { | |
| 1131 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 1132 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 1133 } |
| 201 | 1134 |
| 1135 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 1136 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1137 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1138 } | |
| 1139 | |
| 1140 ////////////////////////////////////////////////////////////////////////////// | |
| 1141 // | |
| 212 | 1142 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 509 | 1143 // temp_deco : simulated respiration pressure |
| 276 | 1144 // float_deco_distance : security factor. |
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1145 // Water-vapor pressure inside limbs (ppWater). |
| 212 | 1146 // |
| 236 | 1147 // Output: ppN2, ppHe. |
| 212 | 1148 // |
| 1149 static void sim_alveolar_presures(void) | |
| 201 | 1150 { |
| 212 | 1151 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1152 | |
| 276 | 1153 // Take deco offset into account, but not at surface. |
| 1154 // Note: this should be done on ambiant pressure, hence before | |
| 1155 // computing the diluant partial pressure... | |
| 1156 if( deco_diluent > pres_surface ) | |
| 1157 deco_diluent += float_deco_distance; | |
| 1158 | |
| 212 | 1159 //---- CCR mode : deco gas switch ? -------------------------------------- |
| 276 | 1160 if( char_I_const_ppO2 != 0 ) |
| 201 | 1161 { |
| 276 | 1162 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
| 1163 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
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1164 // ppWater in the equations below: |
| 321 | 1165 deco_diluent -= const_ppO2; |
| 276 | 1166 deco_diluent /= calc_N2_ratio + calc_He_ratio; |
| 212 | 1167 |
| 1168 if (deco_diluent > temp_deco) | |
| 1169 deco_diluent = temp_deco; | |
| 201 | 1170 } |
| 1171 | |
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1172 if( deco_diluent > ppWater ) |
| 201 | 1173 { |
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1174 ppN2 = calc_N2_ratio * (deco_diluent - ppWater); |
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1175 ppHe = calc_He_ratio * (deco_diluent - ppWater); |
| 201 | 1176 } |
| 1177 else | |
| 1178 { | |
| 236 | 1179 ppN2 = 0.0; |
| 201 | 1180 ppHe = 0.0; |
| 1181 } | |
| 236 | 1182 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 1183 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 1184 } | |
| 1185 | |
| 1186 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1187 // clear_tissue |
| 1188 // | |
| 165 | 1189 // optimized in v.101 (var_N2_a) |
| 167 | 1190 // |
| 1191 // preload tissues with standard pressure for the given ambient pressure. | |
| 1192 // Note: fixed N2_ratio for standard air. | |
| 201 | 1193 // |
| 167 | 1194 static void clear_tissue(void) |
| 116 | 1195 { |
| 1196 flag_in_divemode = 0; | |
| 1197 int_O_DBS_bitfield = 0; | |
| 1198 int_O_DBS2_bitfield = 0; | |
| 1199 int_O_DBG_pre_bitfield = 0; | |
| 1200 int_O_DBG_post_bitfield = 0; | |
| 1201 char_O_NDL_at_20mtr = 255; | |
| 1202 | |
| 167 | 1203 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1204 N2_ratio = 0.7902; | |
| 212 | 1205 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1206 |
| 338 | 1207 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 1208 { |
| 197 | 1209 // cycle through the 16 Bühlmann tissues |
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1210 overlay float p = N2_ratio * (pres_respiration - ppWater); |
| 339 | 1211 pres_tissue_N2[ci] = p; |
| 197 | 1212 |
| 1213 // cycle through the 16 Bühlmann tissues for Helium | |
| 339 | 1214 pres_tissue_He[ci] = 0.0; |
| 338 | 1215 } // for 0 to 15 |
| 116 | 1216 |
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1217 clear_deco_table(); |
| 126 | 1218 char_O_deco_status = 0; |
| 1219 char_O_nullzeit = 0; | |
| 168 | 1220 int_O_ascenttime = 0; |
| 126 | 1221 char_O_gradient_factor = 0; |
| 1222 char_O_relative_gradient_GF = 0; | |
| 197 | 1223 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 258 | 1224 |
| 1225 calc_lead_tissue_limit = 0.0; | |
| 1226 char_O_gtissue_no = 0; | |
| 167 | 1227 } |
| 116 | 1228 |
| 167 | 1229 ////////////////////////////////////////////////////////////////////////////// |
| 1230 // calc_hauptroutine | |
| 1231 // | |
| 1232 // this is the major code in dive mode calculates: | |
| 116 | 1233 // the tissues, |
| 167 | 1234 // the bottom time, |
| 1235 // and simulates the ascend with all deco stops. | |
| 171 | 1236 // |
| 1237 // The deco_state sequence is : | |
| 1238 // 3 (at surface) | |
| 1239 // +---> 0 : calc nullzeit | |
| 1240 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1241 // | +-> 1 : simulate up to 16min of stops. | |
| 1242 // | +------< not finished | |
| 1243 // +--------< finish | |
| 1244 // | |
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1245 // Added steps 6,5 for @+5 calculation: |
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1246 // 6 = ascent to first stop (same as 2), except continue to 7 |
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1247 // 7 = same as 1, except loop to 7. |
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1248 // |
| 167 | 1249 static void calc_hauptroutine(void) |
| 116 | 1250 { |
| 241 | 1251 static unsigned char backup_gas_used = 0; |
| 1252 static unsigned char backup_gas_depth = 0; | |
| 217 | 1253 static unsigned char backup_gas_delay = 0; |
| 186 | 1254 |
| 116 | 1255 calc_hauptroutine_data_input(); |
| 1256 | |
| 1257 if(!flag_in_divemode) | |
| 1258 { | |
| 1259 flag_in_divemode = 1; | |
| 1260 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1261 } | |
| 1262 else | |
| 1263 check_pre_dbg(); | |
| 1264 | |
| 1265 calc_hauptroutine_update_tissues(); | |
| 1266 calc_gradient_factor(); | |
| 1267 | |
| 167 | 1268 // toggle between calculation for nullzeit (bottom time), |
| 1269 // deco stops | |
| 1270 // and more deco stops (continue) | |
| 1271 switch( char_O_deco_status ) | |
| 116 | 1272 { |
| 186 | 1273 case 3: //---- At surface: start a new dive ------------------------------ |
| 1274 clear_deco_table(); | |
| 1275 copy_deco_table(); | |
| 200 | 1276 int_O_ascenttime = 0; // Reset DTR. |
| 323 | 1277 int_O_extra_ascenttime = 0; |
| 200 | 1278 char_O_nullzeit = 0; // Reset bottom time. |
| 278 | 1279 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
| 201 | 1280 |
| 217 | 1281 // Values that should be reset just once for the full real dive. |
| 1282 // This is used to record the lowest stop for the whole dive, | |
| 1283 // Including ACCROSS all simulated ascent. | |
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1284 low_depth = 0.0; |
| 217 | 1285 |
| 1286 // Reset gas switch history. | |
| 241 | 1287 backup_gas_used = sim_gas_last_used = 0; |
| 1288 backup_gas_depth = sim_gas_last_depth = 0; | |
| 217 | 1289 backup_gas_delay = sim_gas_delay = 0; |
| 203 | 1290 sim_dive_mins = 0; |
| 1291 break; | |
| 186 | 1292 |
| 167 | 1293 case 0: //---- bottom time ----------------------------------------------- |
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1294 default: |
| 509 | 1295 gas_switch_find_current(); // Lookup for current gas & time. |
| 1296 gas_switch_set(); // setup calc_ratio's | |
| 1297 | |
| 167 | 1298 calc_nullzeit(); |
| 1299 check_ndl(); | |
| 186 | 1300 char_O_deco_status = 2; // calc ascent next time. |
| 1301 break; | |
| 1302 | |
| 1303 case 2: //---- Simulate ascent to first stop ----------------------------- | |
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1304 case 6: // @+5min variation |
| 203 | 1305 // Check proposed gas at begin of ascent simulation |
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1306 sim_dive_mins = int_I_divemins; // Init current time. |
| 241 | 1307 |
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1308 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1309 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
| 203 | 1310 backup_gas_delay = sim_gas_delay; |
| 186 | 1311 |
| 1312 sim_ascent_to_first_stop(); | |
| 201 | 1313 |
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1314 // Calc stops next time (deco or gas switch). |
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1315 char_O_deco_status = 1 | ( char_O_deco_status & 4 ); |
| 167 | 1316 break; |
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1317 |
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1318 case 1: //---- Simulate stops -------------------------------------------- |
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1319 case 5: // @+5 variation. |
| 167 | 1320 calc_hauptroutine_calc_deco(); |
| 186 | 1321 |
| 1322 // If simulation is finished, restore the GF low reference, so that | |
| 1323 // next ascent simulation is done from the current depth: | |
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1324 if( (char_O_deco_status & 3) == 0 ) |
| 186 | 1325 { |
| 241 | 1326 sim_gas_last_used = backup_gas_used; |
| 1327 sim_gas_last_depth = backup_gas_depth; | |
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1328 sim_gas_delay = backup_gas_delay; |
| 186 | 1329 } |
| 167 | 1330 break; |
| 116 | 1331 } |
| 167 | 1332 |
| 116 | 1333 check_post_dbg(); |
| 1334 } | |
| 1335 | |
| 167 | 1336 ////////////////////////////////////////////////////////////////////////////// |
| 1337 // calc_hauptroutine_data_input | |
| 1338 // | |
| 1339 // Reset all C-code dive parameters from their ASM-code values. | |
| 1340 // Detect gas change condition. | |
| 1341 // | |
| 116 | 1342 void calc_hauptroutine_data_input(void) |
| 1343 { | |
| 203 | 1344 overlay short int_temp; |
| 126 | 1345 |
| 197 | 1346 pres_respiration = int_I_pres_respiration * 0.001; |
| 1347 pres_surface = int_I_pres_surface * 0.001; | |
| 1348 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1349 He_ratio = char_I_He_ratio * 0.01; | |
| 1350 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1351 |
| 126 | 1352 // ____________________________________________________ |
| 1353 // | |
| 1354 // _____________ G A S _ C H A N G E S ________________ | |
| 1355 // ____________________________________________________ | |
| 1356 | |
| 212 | 1357 // Keep a margin of 150mbar = 1.50m |
| 1358 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1359 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1360 |
| 225 | 1361 deco_gas_change[0] = 0; |
| 1362 deco_gas_change[1] = 0; | |
| 1363 deco_gas_change[2] = 0; | |
| 1364 deco_gas_change[3] = 0; | |
| 1365 deco_gas_change[4] = 0; | |
| 116 | 1366 |
| 203 | 1367 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1368 if(char_I_deco_gas_change[0]) |
| 126 | 1369 { |
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1370 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1371 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1372 } |
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1373 if(char_I_deco_gas_change[1]) |
| 126 | 1374 { |
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1375 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1376 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1377 } |
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1378 if(char_I_deco_gas_change[2]) |
| 126 | 1379 { |
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1380 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1381 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1382 } |
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1383 if(char_I_deco_gas_change[3]) |
| 126 | 1384 { |
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1385 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1386 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1387 } |
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1388 if(char_I_deco_gas_change[4]) |
| 126 | 1389 { |
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1390 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1391 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1392 } |
| 116 | 1393 |
| 197 | 1394 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1395 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1396 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1397 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1398 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1399 GF_delta = GF_high - GF_low; |
| 116 | 1400 } |
| 1401 | |
| 167 | 1402 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1403 // |
| 1404 // | |
| 116 | 1405 void calc_hauptroutine_update_tissues(void) |
| 1406 { | |
| 197 | 1407 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1408 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1409 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1410 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1411 |
| 276 | 1412 pres_diluent = pres_respiration; |
| 307 | 1413 if( char_I_const_ppO2 != 0 ) // new in v.101 |
| 186 | 1414 { |
| 322 | 1415 overlay float flush_ppO2 = pres_respiration * (1.0 - N2_ratio - He_ratio); |
| 1416 | |
| 276 | 1417 pres_diluent -= const_ppO2; // new in v.101 |
| 1418 pres_diluent /= N2_ratio + He_ratio; // new in v.101 | |
| 321 | 1419 if( pres_diluent < 0.0 ) |
| 1420 pres_diluent = 0.0; | |
| 276 | 1421 if( pres_diluent > pres_respiration ) // new in v.101 |
| 1422 pres_diluent = pres_respiration; // new in v.101 | |
| 307 | 1423 |
| 321 | 1424 char_O_diluent = (unsigned char)(pres_diluent/pres_respiration*100.0 + 0.5); |
| 322 | 1425 |
| 326 | 1426 if( flush_ppO2 > 2.545) flush_ppO2 = 2.55; |
| 322 | 1427 if( flush_ppO2 < 0.0 ) flush_ppO2 = 0.0; |
| 1428 char_O_flush_ppO2 = (unsigned char)(flush_ppO2*100.0 + 0.5); | |
| 186 | 1429 } |
| 307 | 1430 |
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1431 if( pres_diluent > ppWater ) // new in v.101 |
| 116 | 1432 { |
| 307 | 1433 overlay float EAD, END; |
| 1434 | |
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1435 ppN2 = N2_ratio * (pres_diluent - ppWater); // changed in v.101 |
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1436 ppHe = He_ratio * (pres_diluent - ppWater); // changed in v.101 |
| 307 | 1437 |
| 1438 // EAD : Equivalent Air Dive. Equivalent depth for the same N2 level | |
| 1439 // with plain air. | |
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1440 // ppN2 = 79% * (P_EAD - ppWater) |
| 307 | 1441 // EAD = (P_EAD - Psurface) * 10 |
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1442 // ie: EAD = (ppN2 / 0.7902 + ppWater -Psurface) * 10 |
| 317 | 1443 EAD = (ppN2 / 0.7902 + ppWater - pres_surface) * BAR_TO_METER; |
| 307 | 1444 if( EAD < 0.0 || EAD > 245.5 ) EAD = 0.0; |
| 317 | 1445 char_O_EAD = (unsigned char)(EAD + 0.5); |
| 307 | 1446 |
| 1447 // END : Equivalent Narcotic Dive. | |
| 1448 // Here we count O2 as narcotic too. Hence everything but helium (has a narcosis factor of | |
| 1449 // 0.23 btw). Hence the formula becomes: | |
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1450 // END * BarPerMeter * (1.0 - 0.0) - ppWater + Psurface == Pambient - ppHe - ppWater |
| 317 | 1451 // ie: END = (Pambient - ppHe - Psurface) * BAR_TO_METER |
| 307 | 1452 // |
| 1453 // Source cited: | |
| 1454 // The Physiology and Medicine of Diving by Peter Bennett and David Elliott, | |
| 1455 // 4th edition, 1993, W.B.Saunders Company Ltd, London. | |
| 317 | 1456 END = (pres_respiration - ppHe - pres_surface) * BAR_TO_METER; |
| 307 | 1457 if( END < 0.0 || END > 245.5 ) END = 0.0; |
| 317 | 1458 char_O_END = (unsigned char)(END + 0.5); |
| 116 | 1459 } |
| 167 | 1460 else // new in v.101 |
| 116 | 1461 { |
| 236 | 1462 ppN2 = 0.0; // new in v.101 |
| 200 | 1463 ppHe = 0.0; // new in v.101 |
| 307 | 1464 char_O_EAD = char_O_END = 0; |
| 116 | 1465 } |
| 1466 | |
| 1467 if(!char_I_step_is_1min) | |
| 192 | 1468 calc_tissue(0); |
| 116 | 1469 else |
| 192 | 1470 calc_tissue(1); |
| 186 | 1471 |
| 192 | 1472 // Calc limit for surface, ie. GF_high. |
| 258 | 1473 calc_limit(); |
| 186 | 1474 |
| 203 | 1475 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 339 | 1476 int_O_gtissue_press = (short)((pres_tissue_N2[char_O_gtissue_no] + pres_tissue_He[char_O_gtissue_no]) * 1000); |
| 192 | 1477 |
| 1478 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1479 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1480 { |
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1481 char_O_nullzeit = 0; // deco necessary |
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1482 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1483 } |
| 171 | 1484 } |
| 1485 | |
| 116 | 1486 |
| 167 | 1487 ////////////////////////////////////////////////////////////////////////////// |
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1488 // Compute stops. |
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1489 // |
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1490 // Note: because this can be very long, break on 16 iterations, and set state |
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1491 // to 0 when finished, or to 1 when needing to continue. |
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1492 // Note: because each iteration might be very long too (~ 66 ms in 1.84beta), |
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1493 // break the loop when total time > 512msec. |
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1494 // |
| 116 | 1495 void calc_hauptroutine_calc_deco(void) |
| 1496 { | |
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1497 overlay unsigned char loop; |
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1498 |
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1499 for(loop = 0; loop < 16; ++loop) |
| 116 | 1500 { |
|
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1501 // Limit loops to 512ms, using the RTC timer 3: |
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1502 if( tmr3() & (512*32) ) |
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1503 break; |
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1504 |
| 241 | 1505 // Do not ascent while doing a gas switch ? |
| 203 | 1506 if( sim_gas_delay <= sim_dive_mins ) |
| 1507 { | |
| 241 | 1508 if( calc_nextdecodepth() ) |
| 1509 { | |
| 1510 if( temp_depth_limit == 0 ) | |
| 1511 goto Surface; | |
| 116 | 1512 |
| 241 | 1513 //---- We hit a stop at temp_depth_limit --------------------- |
| 317 | 1514 temp_deco = temp_depth_limit * METER_TO_BAR // Convert to relative bar, |
| 241 | 1515 + pres_surface; // To absolute. |
| 471 | 1516 if( !update_deco_table() ) // Adds a one minute stops. |
| 1517 goto Surface; // Deco table full: abort... | |
| 241 | 1518 } |
| 1519 else | |
| 1520 { | |
| 1521 //---- No stop ----------------------------------------------- | |
| 317 | 1522 temp_deco -= (10*METER_TO_BAR); // Ascend 10m, no wait. |
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1523 |
| 241 | 1524 //---- Finish computations once surface is reached ----------- |
| 1525 if( temp_deco <= pres_surface ) | |
| 1526 { | |
| 1527 Surface: | |
| 471 | 1528 if( char_O_deco_status == 1 ) // Don't in @+5min variant. |
|
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1529 copy_deco_table(); |
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1530 |
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1531 calc_ascenttime(); |
| 471 | 1532 char_O_deco_status = 0; // calc nullzeit next time. |
| 1533 char_O_deco_last_stop = 0; // Surface reached (to animate menu) | |
| 241 | 1534 return; |
| 1535 } | |
| 1536 } | |
| 212 | 1537 } |
| 1538 else | |
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1539 { |
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1540 // Note: if loop==0, temp_depth_limit might not be already set here. |
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1541 temp_depth_limit = (int)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
| 471 | 1542 if( !update_deco_table() ) // Just pass one minute. |
| 1543 goto Surface; // Deco table full: abort... | |
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1544 } |
| 197 | 1545 |
| 241 | 1546 //---- Then update tissue -------------------------------------------- |
| 203 | 1547 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1548 gas_switch_set(); // Apply any simulated gas change, once validated. |
| 212 | 1549 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1550 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1551 } |
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1552 |
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1553 // Surface not reached, need more stops... |
| 278 | 1554 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
| 116 | 1555 } |
| 1556 | |
| 167 | 1557 ////////////////////////////////////////////////////////////////////////////// |
|
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1558 // Simulation ascention to first deco stop. |
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1559 // |
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1560 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1561 // there is no need to break on more that 16 iterations |
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1562 // (or we are already in deep shit). |
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1563 // |
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1564 // Input: pres_respiration |
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1565 // Output: temp_deco |
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1566 // |
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1567 // if char_O_deco_status indicate @+5 variant, add extra time at current depth, |
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1568 // before ascent. |
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1569 void sim_ascent_to_first_stop(void) |
| 116 | 1570 { |
| 171 | 1571 update_startvalues(); |
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1572 clear_deco_table(); |
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1573 |
| 200 | 1574 temp_deco = pres_respiration; // Starts from current real depth. |
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1575 |
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1576 // Are we doing the special @+5min variation ? |
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1577 if(char_O_deco_status & 4) |
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1578 sim_extra_time(); |
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1579 |
| 212 | 1580 // Do we have a gas switch going on ? |
| 1581 if( sim_gas_delay > sim_dive_mins ) | |
| 1582 return; | |
| 1583 | |
| 241 | 1584 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1585 for(;;) |
| 116 | 1586 { |
| 461 | 1587 overlay float old_deco = temp_deco; // Pamb backup (bars) |
| 460 | 1588 |
| 241 | 1589 // Try ascending 1 full minute. |
| 461 | 1590 temp_deco -= 10*METER_TO_BAR; // 1 min, at 10m/min. ~ 1bar. |
| 1591 if( temp_deco < pres_surface ) // But don't go over surface. | |
| 1592 temp_deco = pres_surface; | |
| 203 | 1593 |
| 461 | 1594 // Recompute sim_lead_tissue_limit at GF_low (deepest stop), because |
| 1595 // one minute passed. | |
| 212 | 1596 sim_limit(GF_low); |
| 1597 | |
| 1598 // Did we reach deepest remaining stop ? | |
| 241 | 1599 if( temp_deco < sim_lead_tissue_limit ) |
| 212 | 1600 { |
| 461 | 1601 temp_deco = old_deco; // Restore last correct depth, |
| 1602 break; // Do no spend a minute more. | |
| 212 | 1603 } |
| 1604 | |
| 203 | 1605 // Did we reach surface ? |
| 460 | 1606 // NOTE: we should round BEFORE checking surface is reached. |
| 461 | 1607 temp_depth_limit = (unsigned char)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
| 1608 if( temp_depth_limit == 0 ) | |
| 203 | 1609 { |
| 1610 temp_deco = pres_surface; // Yes: finished ! | |
| 1611 break; | |
| 1612 } | |
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1613 |
| 241 | 1614 // Check for gas change below new depth ? |
| 1615 if( gas_switch_deepest() ) | |
| 1616 { | |
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1617 assert( temp_depth_limit > 0); |
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1618 |
| 317 | 1619 temp_deco = temp_depth_limit * METER_TO_BAR + pres_surface; |
| 212 | 1620 break; |
| 241 | 1621 } |
| 171 | 1622 |
| 203 | 1623 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1624 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
| 203 | 1625 sim_tissue(1); // and update tissues for 1 min. |
| 1626 } | |
| 167 | 1627 } |
| 116 | 1628 |
| 167 | 1629 ////////////////////////////////////////////////////////////////////////////// |
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1630 // Simulation extra time at the current depth. |
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1631 // |
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1632 // This routine is used for @+5min feature. |
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1633 void sim_extra_time(void) |
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1634 { |
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1635 overlay unsigned char extra = read_custom_function(58); |
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1636 do { |
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1637 sim_dive_mins++; // Advance simulated time by 1 minute. |
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1638 sim_tissue(1); // and update tissues for 1 min. |
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1639 } while( --extra != 0 ); |
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1640 } |
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1641 |
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1642 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 1643 // calc_tissue |
| 1644 // | |
| 116 | 1645 // optimized in v.101 |
| 167 | 1646 // |
| 184 | 1647 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1648 { |
| 251 | 1649 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1650 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1651 |
| 338 | 1652 for (ci=0;ci<NUM_COMP;ci++) |
| 126 | 1653 { |
| 258 | 1654 read_buhlmann_times(period); // 2 sec or 1 min period. |
| 116 | 1655 |
| 126 | 1656 // N2 |
| 339 | 1657 temp_tissue = (ppN2 - pres_tissue_N2[ci]) * var_N2_e; |
| 126 | 1658 temp_tissue_safety(); |
| 339 | 1659 pres_tissue_N2[ci] += temp_tissue; |
| 165 | 1660 |
| 126 | 1661 // He |
| 339 | 1662 temp_tissue = (ppHe - pres_tissue_He[ci]) * var_He_e; |
| 126 | 1663 temp_tissue_safety(); |
| 339 | 1664 pres_tissue_He[ci] += temp_tissue; |
| 192 | 1665 } |
| 167 | 1666 } |
| 116 | 1667 |
| 167 | 1668 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1669 // calc_limit |
| 167 | 1670 // |
| 192 | 1671 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1672 // |
| 258 | 1673 static void calc_limit(void) |
| 167 | 1674 { |
| 192 | 1675 char_O_gtissue_no = 255; |
| 1676 calc_lead_tissue_limit = 0.0; | |
| 1677 | |
| 338 | 1678 for(ci=0; ci<NUM_COMP;ci++) |
| 192 | 1679 { |
| 339 | 1680 overlay float N2 = pres_tissue_N2[ci]; |
| 1681 overlay float He = pres_tissue_He[ci]; | |
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1682 overlay float p = N2 + He; |
| 192 | 1683 |
| 258 | 1684 read_buhlmann_coefficients(); |
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1685 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1686 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
| 116 | 1687 |
| 192 | 1688 // Apply the Eric Baker's varying gradient factor correction. |
| 1689 // Note: the correction factor depends both on GF and b, | |
| 1690 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1691 // so that can change who is the leading gas... | |
| 1692 // Note: Also depends of the GF. So the calcul is different for | |
| 1693 // GF_low, current GF, or GF_high... | |
| 1694 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1695 // hence what would happend at surface, | |
| 1696 // hence at GF_high. | |
| 509 | 1697 if( char_I_deco_model != 0 ) |
| 258 | 1698 p = ( p - var_N2_a * GF_high) * var_N2_b |
| 1699 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
| 192 | 1700 else |
| 1701 p = (p - var_N2_a) * var_N2_b; | |
| 258 | 1702 if( p < 0.0 ) p = 0.0; |
| 192 | 1703 |
| 1704 if( p > calc_lead_tissue_limit ) | |
| 1705 { | |
| 1706 char_O_gtissue_no = ci; | |
| 1707 calc_lead_tissue_limit = p; | |
| 1708 } | |
| 1709 } | |
| 197 | 1710 |
| 338 | 1711 assert( char_O_gtissue_no < NUM_COMP ); |
| 197 | 1712 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); |
| 167 | 1713 } |
| 1714 | |
| 1715 ////////////////////////////////////////////////////////////////////////////// | |
| 1716 // calc_nullzeit | |
| 1717 // | |
| 1718 // calculates the remaining bottom time | |
| 1719 // | |
| 509 | 1720 // 2011-11-20 jDG: Changed (beta 2.06) to use Eric Baker's direct NDL formula. |
| 1721 // | |
| 1722 // Input: pres_respiration | |
| 1723 // Output: char_O_nullzeit | |
| 167 | 1724 // |
| 1725 static void calc_nullzeit(void) | |
| 1726 { | |
| 509 | 1727 overlay float Pin; |
| 1728 | |
| 1729 temp_deco = pres_respiration; | |
| 1730 sim_alveolar_presures(); | |
| 1731 Pin = ppN2 + ppHe; | |
| 167 | 1732 |
| 509 | 1733 char_O_nullzeit = 240; |
| 1734 for(ci=0; ci<NUM_COMP; ci++) | |
| 1735 { | |
| 1736 //---- Compute composite A/B values and half times for the mix ------- | |
| 1737 overlay float N2 = pres_tissue_N2[ci]; | |
| 1738 overlay float He = pres_tissue_He[ci]; | |
| 1739 overlay float p = N2 + He; | |
| 167 | 1740 |
| 509 | 1741 read_buhlmann_ht(); |
| 1742 var_N2_ht = (var_N2_ht * N2 + var_He_ht * He) / p; | |
| 192 | 1743 |
| 509 | 1744 read_buhlmann_coefficients(); |
| 1745 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; | |
| 1746 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 1747 | |
| 1748 //---- Calc time for that tissue ------------------------------------- | |
| 1749 // Erik Baker's formula: | |
| 1750 // M0 (M-value at surface) = var_N2_a + pres_surface/var_N2_b | |
| 1751 // Pin = respirated pressure ppN2 + ppHe | |
| 1752 // p = pressure inside tissue | |
| 1753 // 0.6931 = log(2) | |
| 1754 // NDL(ci) = log((Pin - p)/(Pin - M0))/log(2) * ht | |
| 1755 // | |
| 1756 if( Pin > p ) // Only when on-gasing | |
| 1757 { | |
| 1758 overlay float M0 = (var_N2_a + pres_surface/var_N2_b); | |
| 116 | 1759 |
| 509 | 1760 // Apply security margin when using the GF model |
| 1761 if( char_I_deco_model != 0 ) | |
| 1762 M0 = GF_high * (M0 - pres_surface) + pres_surface; | |
| 167 | 1763 |
| 509 | 1764 if( Pin > M0 ) |
| 1765 { | |
| 1766 overlay unsigned char indl; | |
| 1767 | |
| 1768 overlay float ndl = log((Pin - p)/(Pin - M0)) * var_N2_ht/0.6931; | |
| 116 | 1769 |
| 509 | 1770 // Apply non-GF model security margins: |
| 1771 // Saturation factor will be applied to gas loading, accelerating | |
| 1772 // loading, hence we should decrease NDL accordingly. | |
| 1773 if( char_I_deco_model == 0) | |
| 1774 ndl /= float_saturation_multiplier; | |
| 167 | 1775 |
| 509 | 1776 if( ndl < 0.0f ) ndl = 0.0f; |
| 1777 if( ndl > 254.5f ) ndl = 255.0f; | |
| 1778 indl = (unsigned char)(ndl + 0.5f); | |
| 1779 if( indl < char_O_nullzeit ) | |
| 1780 char_O_nullzeit = indl; | |
| 1781 } | |
| 1782 } | |
| 339 | 1783 } |
| 167 | 1784 } |
| 116 | 1785 |
| 167 | 1786 ////////////////////////////////////////////////////////////////////////////// |
| 1787 // calc_ascenttime | |
| 1788 // | |
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1789 // Summup ascent from bottom to surface, at 1 bar/min, 1min for last 3 meters, |
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1790 // and all stops. |
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1791 // |
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1792 // Result in int_O_ascenttime, or int_O_extra_ascenttime if in @+5min variant. |
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1793 static void calc_ascenttime(void) |
| 116 | 1794 { |
| 323 | 1795 overlay unsigned char x; |
| 1796 overlay unsigned short sum; | |
| 168 | 1797 |
| 323 | 1798 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
| 1799 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
| 1800 if (ascent < 0.0) | |
| 1801 ascent = 0.0; | |
| 1802 sum = (unsigned short)(ascent + 0.99); | |
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1803 |
| 338 | 1804 for(x=0; x<NUM_STOPS && internal_deco_depth[x]; x++) |
| 323 | 1805 sum += (unsigned short)internal_deco_time[x]; |
| 1806 | |
| 1807 if( char_O_deco_status == 1 ) | |
| 1808 int_O_ascenttime = sum; | |
| 126 | 1809 else |
| 323 | 1810 int_O_extra_ascenttime = sum; |
| 167 | 1811 } |
| 116 | 1812 |
| 167 | 1813 ////////////////////////////////////////////////////////////////////////////// |
| 1814 // update_startvalues | |
| 1815 // | |
| 116 | 1816 // updated in v.102 |
| 167 | 1817 // |
| 116 | 1818 void update_startvalues(void) |
| 1819 { | |
| 167 | 1820 overlay unsigned char x; |
| 116 | 1821 |
| 201 | 1822 // Start ascent simulation with current tissue partial pressures. |
| 339 | 1823 for(x=0; x<NUM_COMP; x++) |
| 116 | 1824 { |
| 339 | 1825 sim_pres_tissue_N2[x] = pres_tissue_N2[x]; |
| 1826 sim_pres_tissue_He[x] = pres_tissue_He[x]; | |
| 116 | 1827 } |
| 197 | 1828 |
| 201 | 1829 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1830 sim_lead_tissue_limit = 0.0; |
| 1831 sim_lead_tissue_no = 255; | |
| 167 | 1832 } |
| 116 | 1833 |
| 167 | 1834 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1835 // sim_tissue |
| 167 | 1836 // |
| 116 | 1837 // optimized in v.101 |
| 167 | 1838 // |
| 1839 // Function very simular to calc_tissue, but: | |
| 1840 // + Use a 1min or 10min period. | |
| 1841 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1842 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1843 { |
| 251 | 1844 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1845 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1846 |
| 338 | 1847 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 1848 { |
| 258 | 1849 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
| 165 | 1850 |
| 126 | 1851 // N2 |
| 339 | 1852 temp_tissue = (ppN2 - sim_pres_tissue_N2[ci]) * var_N2_e; |
| 126 | 1853 temp_tissue_safety(); |
| 339 | 1854 sim_pres_tissue_N2[ci] += temp_tissue; |
| 126 | 1855 |
| 1856 // He | |
| 339 | 1857 temp_tissue = (ppHe - sim_pres_tissue_He[ci]) * var_He_e; |
| 126 | 1858 temp_tissue_safety(); |
| 339 | 1859 sim_pres_tissue_He[ci] += temp_tissue; |
| 192 | 1860 } |
| 167 | 1861 } |
| 116 | 1862 |
| 167 | 1863 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1864 // sim_limit() |
| 1865 // | |
| 1866 // New in v.111 | |
| 1867 // | |
| 1868 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1869 // different depth, because it depends on current gradient factor. | |
| 167 | 1870 // |
| 192 | 1871 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1872 { |
| 212 | 1873 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1874 | |
| 192 | 1875 sim_lead_tissue_limit = 0.0; |
| 212 | 1876 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1877 |
| 338 | 1878 for(ci=0; ci<NUM_COMP; ci++) |
| 192 | 1879 { |
| 339 | 1880 overlay float N2 = sim_pres_tissue_N2[ci]; |
| 1881 overlay float He = sim_pres_tissue_He[ci]; | |
| 241 | 1882 overlay float p = N2 + He; |
| 192 | 1883 |
| 258 | 1884 read_buhlmann_coefficients(); |
| 241 | 1885 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
| 1886 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 192 | 1887 |
| 1888 // Apply the Eric Baker's varying gradient factor correction. | |
| 1889 // Note: the correction factor depends both on GF and b, | |
| 1890 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1891 // so that can change who is the leading gas... | |
| 1892 // Note: Also depends of the GF_current... | |
| 509 | 1893 if( char_I_deco_model != 0 ) |
| 302 | 1894 p = ( p - var_N2_a * GF_current) |
| 1895 / (GF_current / var_N2_b + 1.0 - GF_current); | |
| 192 | 1896 else |
| 1897 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1898 if( p < 0.0 ) p = 0.0; |
| 192 | 1899 |
| 1900 if( p > sim_lead_tissue_limit ) | |
| 1901 { | |
| 1902 sim_lead_tissue_no = ci; | |
| 1903 sim_lead_tissue_limit = p; | |
| 1904 } | |
| 1905 } // for ci | |
| 197 | 1906 |
| 338 | 1907 assert( sim_lead_tissue_no < NUM_COMP ); |
| 237 | 1908 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1909 } |
| 116 | 1910 |
| 167 | 1911 ////////////////////////////////////////////////////////////////////////////// |
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1912 // clear_deco_table |
| 167 | 1913 // |
| 1914 // unchanged in v.101 | |
| 1915 // | |
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1916 static void clear_deco_table(void) |
| 116 | 1917 { |
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1918 overlay unsigned char x; |
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1919 |
| 338 | 1920 for(x=0; x<NUM_STOPS; ++x) |
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1921 { |
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1922 internal_deco_time [x] = 0; |
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1923 internal_deco_depth[x] = 0; |
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1924 } |
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1925 } |
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1926 |
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1927 ////////////////////////////////////////////////////////////////////////////// |
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1928 // update_deco_table |
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1929 // |
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1930 // Add 1 min to current stop. |
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1931 // |
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1932 // Inputs: |
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1933 // temp_depth_limit = stop's depth, in meters. |
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1934 // In/Out: |
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1935 // internal_deco_depth[] : depth (in metres) of each stops. |
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1936 // internal_deco_time [] : time (in minutes) of each stops. |
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1937 // |
| 471 | 1938 static unsigned char update_deco_table() |
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1939 { |
| 192 | 1940 overlay unsigned char x; |
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1941 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1942 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1943 |
| 338 | 1944 for(x=0; x<NUM_STOPS; ++x) |
| 192 | 1945 { |
| 212 | 1946 // Make sure deco-stops are recorded in order: |
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1947 assert( !internal_deco_depth[x] || temp_depth_limit <= (internal_deco_depth[x]& 0x7F) ); |
| 212 | 1948 |
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1949 if( (internal_deco_depth[x] & 0x7F) == temp_depth_limit ) |
| 192 | 1950 { |
| 1951 // Do not overflow (max 255') | |
| 1952 if( internal_deco_time[x] < 255 ) | |
| 1953 { | |
| 1954 internal_deco_time[x]++; | |
| 471 | 1955 return 1; |
| 192 | 1956 } |
| 1957 // But store extra in the next stop... | |
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1958 } |
| 192 | 1959 |
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1960 if( internal_deco_depth[x] == 0 ) |
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1961 { |
| 192 | 1962 internal_deco_depth[x] = temp_depth_limit; |
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1963 if( sim_gas_delay > sim_dive_mins ) |
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1964 internal_deco_depth[x] |= 0x80; |
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1965 |
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1966 internal_deco_time[x] = 1; |
| 471 | 1967 return 1; |
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1968 } |
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1969 } |
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1970 |
| 192 | 1971 // Can't store stops at more than 96m. |
| 1972 // Or stops at less that 3m too. | |
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1973 // Just do nothing with that... |
| 471 | 1974 return 0; |
| 167 | 1975 } |
| 116 | 1976 |
| 167 | 1977 ////////////////////////////////////////////////////////////////////////////// |
| 1978 // calc_gradient_factor | |
| 1979 // | |
| 165 | 1980 // optimized in v.101 (var_N2_a) |
| 116 | 1981 // new code in v.102 |
| 167 | 1982 // |
| 1983 static void calc_gradient_factor(void) | |
| 116 | 1984 { |
| 197 | 1985 overlay float gf; |
| 339 | 1986 overlay float N2 = pres_tissue_N2[char_O_gtissue_no]; |
| 1987 overlay float He = pres_tissue_He[char_O_gtissue_no]; | |
| 237 | 1988 |
| 338 | 1989 assert( char_O_gtissue_no < NUM_COMP ); |
| 237 | 1990 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1991 |
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1992 // tissue > respiration (currently off-gasing) |
| 302 | 1993 // GF = 0% when respiration == tissue, ie. bubbles are at equilibrium. |
| 1994 // GF = 100% when respiration == limit. | |
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1995 temp_tissue = N2 + He; |
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1996 if( temp_tissue <= pres_respiration ) |
| 197 | 1997 gf = 0.0; |
| 1998 else | |
| 1999 { | |
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2000 overlay float limit = calc_lead_tissue_limit; |
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2001 // NOTE: in GF model, calc_lead_tissue_limit include already the |
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2002 // correction due to gradient factor. To compute the actual |
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2003 // current GF, we need to (re-)compute the raw ambiant-pressure |
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2004 // limit from the Bühlmann model. |
| 509 | 2005 if( char_I_deco_model != 0 ) |
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2006 { |
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2007 ci = char_O_gtissue_no; |
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2008 read_buhlmann_coefficients(); |
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2009 var_N2_a = (var_N2_a * N2 + var_He_a * He) / temp_tissue; |
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2010 var_N2_b = (var_N2_b * N2 + var_He_b * He) / temp_tissue; |
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2011 limit = (temp_tissue - var_N2_a) * var_N2_b; |
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2012 } |
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2013 |
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2014 gf = (temp_tissue - pres_respiration) |
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2015 / (temp_tissue - limit) |
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2016 * 100.0; |
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2017 if( gf > 254.5 ) gf = 255.0; |
| 197 | 2018 if( gf < 0.0 ) gf = 0.0; |
| 2019 } | |
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2020 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
| 116 | 2021 |
| 509 | 2022 if( char_I_deco_model != 0 ) // calculate relative gradient factor |
| 116 | 2023 { |
| 197 | 2024 overlay float rgf; |
| 2025 | |
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2026 if( low_depth < 1.5 ) |
| 197 | 2027 rgf = GF_high; |
| 2028 else | |
| 2029 { | |
| 317 | 2030 overlay float temp1 = low_depth * METER_TO_BAR; |
| 197 | 2031 overlay float temp2 = pres_respiration - pres_surface; |
| 186 | 2032 |
| 197 | 2033 if (temp2 <= 0) |
| 2034 rgf = GF_high; | |
| 2035 else if (temp2 >= temp1) | |
| 2036 rgf = GF_low; | |
| 2037 else | |
| 2038 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 2039 } | |
| 186 | 2040 |
| 197 | 2041 rgf = gf / rgf; // gf is already in percent |
| 2042 if( rgf < 0.0 ) rgf = 0.0; | |
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2043 if( rgf > 254.5 ) rgf = 255.0; |
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2044 char_O_relative_gradient_GF = (unsigned char)(rgf+0.5f); |
| 116 | 2045 } // calc relative gradient factor |
| 2046 else | |
| 2047 { | |
| 186 | 2048 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 2049 } |
| 167 | 2050 } |
| 116 | 2051 |
| 167 | 2052 ////////////////////////////////////////////////////////////////////////////// |
| 2053 // deco_calc_desaturation_time | |
| 2054 // | |
| 116 | 2055 // FIXED N2_ratio |
| 2056 // unchanged in v.101 | |
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2057 // Inputs: int_I_pres_surface, ppWater, char_I_desaturation_multiplier |
| 233 | 2058 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] |
| 167 | 2059 // |
| 116 | 2060 void deco_calc_desaturation_time(void) |
| 2061 { | |
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2062 RESET_C_STACK |
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2063 |
| 233 | 2064 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2065 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2066 | |
| 237 | 2067 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 2068 pres_surface = int_I_pres_surface * 0.001; |
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2069 ppN2 = N2_ratio * (pres_surface - ppWater); |
| 126 | 2070 int_O_desaturation_time = 0; |
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2071 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
| 233 | 2072 |
| 339 | 2073 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 2074 { |
| 251 | 2075 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 2076 overlay float temp1; | |
| 2077 overlay float temp2; | |
| 2078 overlay float temp3; | |
| 2079 overlay float temp4; | |
| 338 | 2080 |
| 509 | 2081 read_buhlmann_ht(); |
| 338 | 2082 |
| 126 | 2083 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 2084 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 2085 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
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2086 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
| 126 | 2087 // N2 |
| 339 | 2088 temp1 = 1.05 * ppN2 - pres_tissue_N2[ci]; |
| 2089 temp2 = ppN2 - pres_tissue_N2[ci]; | |
| 126 | 2090 if (temp2 >= 0.0) |
| 2091 { | |
| 233 | 2092 temp1 = 0.0; |
| 2093 temp2 = 0.0; | |
| 126 | 2094 } |
| 2095 else | |
| 2096 temp1 = temp1 / temp2; | |
| 251 | 2097 if( 0.0 < temp1 && temp1 < 1.0 ) |
| 126 | 2098 { |
|
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2099 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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2100 // minus because log is negative. |
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2101 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
| 509 | 2102 temp2 = var_N2_ht * temp1 / float_desaturation_multiplier; // time necessary (in minutes ) for complete desaturation (see comment about 5 percent) , new in v.101: float_desaturation_multiplier |
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2103 |
| 126 | 2104 } |
| 2105 else | |
| 2106 { | |
| 233 | 2107 temp1 = 0.0; |
| 2108 temp2 = 0.0; | |
| 126 | 2109 } |
| 116 | 2110 |
| 126 | 2111 // He |
| 339 | 2112 temp3 = 0.1 - pres_tissue_He[ci]; |
| 126 | 2113 if (temp3 >= 0.0) |
| 2114 { | |
| 233 | 2115 temp3 = 0.0; |
| 2116 temp4 = 0.0; | |
| 126 | 2117 } |
| 2118 else | |
| 339 | 2119 temp3 = - temp3 / pres_tissue_He[ci]; |
| 251 | 2120 if( 0.0 < temp3 && temp3 < 1.0 ) |
| 126 | 2121 { |
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2122 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
| 126 | 2123 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
| 2124 // minus because log is negative | |
| 509 | 2125 temp4 = var_He_ht * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 2126 } |
| 2127 else | |
| 2128 { | |
| 233 | 2129 temp3 = 0.0; |
| 2130 temp4 = 0.0; | |
| 126 | 2131 } |
| 116 | 2132 |
| 126 | 2133 // saturation_time (for flight) |
| 2134 if (temp4 > temp2) | |
| 203 | 2135 desat_time = (unsigned short)temp4; |
| 126 | 2136 else |
| 203 | 2137 desat_time = (unsigned short)temp2; |
| 252 | 2138 |
| 251 | 2139 if(desat_time > int_O_desaturation_time) |
| 2140 int_O_desaturation_time = desat_time; | |
| 116 | 2141 |
| 126 | 2142 // N2 saturation in multiples of halftime for display purposes |
| 339 | 2143 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
| 2144 temp2 = temp2 + 80.0; // set center | |
| 126 | 2145 if (temp2 < 0.0) |
| 2146 temp2 = 0.0; | |
| 2147 if (temp2 > 255.0) | |
| 2148 temp2 = 255.0; | |
| 339 | 2149 char_O_tissue_N2_saturation[ci] = (char)temp2; |
| 233 | 2150 |
| 126 | 2151 // He saturation in multiples of halftime for display purposes |
| 339 | 2152 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
| 2153 temp4 = temp4 + 80.0; // set center | |
| 126 | 2154 if (temp4 < 0.0) |
| 2155 temp4 = 0.0; | |
| 2156 if (temp4 > 255.0) | |
| 2157 temp4 = 255.0; | |
| 339 | 2158 char_O_tissue_He_saturation[ci] = (char)temp4; |
| 126 | 2159 } // for |
| 167 | 2160 } |
| 116 | 2161 |
| 167 | 2162 ////////////////////////////////////////////////////////////////////////////// |
| 2163 // calc_wo_deco_step_1_min | |
| 2164 // | |
| 116 | 2165 // FIXED N2 Ratio |
| 2166 // optimized in v.101 (...saturation_multiplier) | |
| 2167 // desaturation slowed down to 70,42% | |
| 167 | 2168 // |
| 2169 static void calc_wo_deco_step_1_min(void) | |
| 116 | 2170 { |
| 251 | 2171 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2172 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
| 2173 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
| 2174 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2175 | |
| 116 | 2176 if(flag_in_divemode) |
| 2177 { | |
| 2178 flag_in_divemode = 0; | |
| 2179 set_dbg_end_of_dive(); | |
| 2180 } | |
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2181 |
| 126 | 2182 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 368 | 2183 pres_respiration = pres_surface = int_I_pres_surface * 0.001; |
| 2184 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
| 200 | 2185 ppHe = 0.0; |
|
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2186 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
| 197 | 2187 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 2188 |
| 339 | 2189 calc_tissue(1); // update the pressure in the tissues N2/He in accordance with the new ambient pressure |
| 167 | 2190 |
|
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2191 clear_deco_table(); |
| 200 | 2192 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 2193 char_O_nullzeit = 0; |
| 168 | 2194 int_O_ascenttime = 0; |
| 323 | 2195 int_O_extra_ascenttime = 0; |
| 126 | 2196 calc_gradient_factor(); |
| 167 | 2197 } |
| 126 | 2198 |
| 167 | 2199 ////////////////////////////////////////////////////////////////////////////// |
| 368 | 2200 // calc_dive_interval |
| 2201 // | |
| 2202 // Prepare tissue for delay before the next dive simulation. | |
| 2203 // | |
| 2204 // Inputs: char_I_dive_interval == delay before dive (in 10' steps). | |
| 2205 // Outputs: pres_tissue_N2/He[], CNS_fraction | |
| 2206 // | |
| 2207 // Should be protected by deco_push_tissues_to_vault(), | |
| 2208 // deco_pull_tissues_from_vault() | |
| 2209 // | |
| 2210 // desaturation slowed down to 70,42%. | |
| 2211 // | |
| 2212 static void calc_dive_interval() | |
| 2213 { | |
| 2214 overlay unsigned char t; | |
|
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2215 overlay unsigned char backup_model; |
| 368 | 2216 |
| 2217 //---- Initialize simulation parameters ---------------------------------- | |
| 2218 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann | |
| 2219 pres_respiration = pres_surface = int_I_pres_surface * 0.001; | |
| 2220 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
| 2221 ppHe = 0.0; | |
|
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2222 float_desaturation_multiplier = char_I_desaturation_multiplier * (0.01 * SURFACE_DESAT_FACTOR); |
| 368 | 2223 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 2224 | |
|
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2225 // Make sure SURFACE_DESAT_FACTOR is applyed: |
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2226 backup_model = char_I_deco_model; |
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2227 char_I_deco_model = 0; |
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2228 |
| 368 | 2229 //---- Perform simulation ------------------------------------------------ |
|
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2230 |
| 368 | 2231 for(t=0; t<char_I_dive_interval; ++t) |
| 2232 { | |
| 2233 calc_tissue(2); // period = 10min. | |
| 2234 CNS_fraction = 0.92587471 * CNS_fraction; // Half-time = 90min: (1/2)^(1/9) | |
| 2235 } | |
| 2236 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); | |
|
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2237 |
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2238 //---- Restore model ----------------------------------------------------- |
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2239 char_I_deco_model = backup_model; |
| 368 | 2240 } |
| 2241 | |
| 2242 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 2243 ////////////////////////////////////////////////////////////////////////////// |
| 2244 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 2245 ////////////////////////////////////////////////////////////////////////////// | |
| 2246 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 2247 |
| 184 | 2248 #ifndef CROSS_COMPILE |
| 116 | 2249 void deco_hash(void) |
| 2250 { | |
| 167 | 2251 overlay unsigned char md_i, md_j; // Loop index. |
| 2252 overlay unsigned char md_t; | |
| 2253 overlay unsigned char md_buffer[16]; | |
| 2254 overlay unsigned char md_temp; | |
| 203 | 2255 overlay unsigned short md_pointer; |
| 167 | 2256 |
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2257 RESET_C_STACK |
| 126 | 2258 |
| 2259 // init | |
| 164 | 2260 for(md_i=0;md_i<16;md_i++) |
| 126 | 2261 { |
| 2262 md_state[md_i] = 0; | |
| 164 | 2263 char_O_hash[md_i] = 0; |
| 126 | 2264 } // for md_i 16 |
| 116 | 2265 |
| 126 | 2266 _asm |
| 167 | 2267 movlw 0x01 // md_pi address. |
| 2268 movwf TBLPTRU,0 | |
| 2269 movlw 0x7E | |
| 2270 movwf TBLPTRH,0 | |
| 2271 movlw 0x00 | |
| 2272 movwf TBLPTRL,0 | |
| 126 | 2273 _endasm; |
| 165 | 2274 md_i = 0; |
| 2275 do { | |
| 126 | 2276 _asm |
| 2277 TBLRDPOSTINC | |
| 2278 movff TABLAT,md_temp | |
| 2279 _endasm | |
| 165 | 2280 md_pi_subst[md_i++] = md_temp; |
| 2281 } while( md_i != 0 ); | |
| 2282 | |
| 126 | 2283 _asm |
| 167 | 2284 movlw 0x00 |
| 2285 movwf TBLPTRU,0 | |
| 2286 movlw 0x00 | |
| 2287 movwf TBLPTRH,0 | |
| 2288 movlw 0x00 | |
| 2289 movwf TBLPTRL,0 | |
| 126 | 2290 _endasm |
| 167 | 2291 |
| 126 | 2292 // cycle buffers |
| 2293 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 2294 { | |
| 2295 md_t = 0; | |
| 2296 for (md_i=0;md_i<16;md_i++) | |
| 2297 { | |
| 2298 if(md_pointer == 9) | |
| 164 | 2299 md_temp = char_O_hash[md_i]; |
| 126 | 2300 else |
| 2301 { | |
| 2302 _asm | |
| 167 | 2303 TBLRDPOSTINC |
| 2304 movff TABLAT,md_temp | |
| 126 | 2305 _endasm |
| 2306 } // else | |
| 167 | 2307 |
| 2308 md_buffer[md_i] = md_temp; | |
| 186 | 2309 md_state[md_i+16] = md_temp; |
| 2310 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2311 } // for md_i 16 |
| 2312 | |
| 2313 for (md_i=0;md_i<18;md_i++) | |
| 2314 { | |
| 2315 for (md_j=0;md_j<48;md_j++) | |
| 2316 { | |
| 167 | 2317 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2318 md_t = md_state[md_j]; |
| 2319 } // for md_j 48 | |
| 2320 md_t = (unsigned char)(md_t+1); | |
| 2321 } // for md_i 18 | |
| 164 | 2322 md_t = char_O_hash[15]; |
| 126 | 2323 |
| 2324 for (md_i=0;md_i<16;md_i++) | |
| 2325 { | |
| 167 | 2326 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2327 md_t = char_O_hash[md_i]; |
| 126 | 2328 } // for md_i 16 |
| 2329 } // for md_pointer | |
| 116 | 2330 } // void deco_hash(void) |
| 184 | 2331 #endif |
| 116 | 2332 |
| 167 | 2333 ////////////////////////////////////////////////////////////////////////////// |
| 2334 // deco_clear_CNS_fraction | |
| 2335 // | |
| 116 | 2336 // new in v.101 |
| 167 | 2337 // |
| 116 | 2338 void deco_clear_CNS_fraction(void) |
| 2339 { | |
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2340 RESET_C_STACK |
| 237 | 2341 |
| 126 | 2342 CNS_fraction = 0.0; |
| 2343 char_O_CNS_fraction = 0; | |
| 167 | 2344 } |
| 116 | 2345 |
| 167 | 2346 ////////////////////////////////////////////////////////////////////////////// |
| 2347 // deco_calc_CNS_fraction | |
| 2348 // | |
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2349 // Input: char_I_actual_ppO2 : Current condition (in decibars). |
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2350 // char_I_step_is_1min : use 1min or 10min steps instead of 2sec. |
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2351 // CNS_fraction : velue before period. |
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2352 // Output: CNS_fraction, char_O_CNS_fraction |
| 167 | 2353 // |
| 116 | 2354 void deco_calc_CNS_fraction(void) |
| 2355 { | |
| 292 | 2356 overlay float time_factor = 1.0f; |
| 126 | 2357 RESET_C_STACK |
| 167 | 2358 |
| 471 | 2359 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
| 237 | 2360 assert( char_I_actual_ppO2 > 15 ); |
| 2361 | |
|
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2362 if( char_I_step_is_1min == 1 ) |
| 292 | 2363 time_factor = 30.0f; |
|
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2364 else if( char_I_step_is_1min == 2 ) |
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2365 time_factor = 300.0f; |
| 116 | 2366 |
| 126 | 2367 if (char_I_actual_ppO2 < 50) |
| 292 | 2368 ; // no changes |
| 126 | 2369 else if (char_I_actual_ppO2 < 60) |
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2370 CNS_fraction += time_factor/(-540.0 * char_I_actual_ppO2 + 54000.0); |
| 126 | 2371 else if (char_I_actual_ppO2 < 70) |
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2372 CNS_fraction += time_factor/(-450.0 * char_I_actual_ppO2 + 48600.0); |
| 126 | 2373 else if (char_I_actual_ppO2 < 80) |
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2374 CNS_fraction += time_factor/(-360.0 * char_I_actual_ppO2 + 42300.0); |
| 126 | 2375 else if (char_I_actual_ppO2 < 90) |
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2376 CNS_fraction += time_factor/(-270.0 * char_I_actual_ppO2 + 35100.0); |
| 126 | 2377 else if (char_I_actual_ppO2 < 110) |
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2378 CNS_fraction += time_factor/(-180.0 * char_I_actual_ppO2 + 27000.0); |
| 126 | 2379 else if (char_I_actual_ppO2 < 150) |
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2380 CNS_fraction += time_factor/( -90.0 * char_I_actual_ppO2 + 17100.0); |
| 126 | 2381 else if (char_I_actual_ppO2 < 160) |
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2382 CNS_fraction += time_factor/(-225.0 * char_I_actual_ppO2 + 37350.0); |
| 126 | 2383 else if (char_I_actual_ppO2 < 165) |
| 292 | 2384 CNS_fraction += time_factor*0.000755; // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity... Formula (A1) based on value for 1.55 and c=20 |
| 126 | 2385 else if (char_I_actual_ppO2 < 170) |
| 292 | 2386 CNS_fraction += time_factor*0.00102; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 |
| 126 | 2387 else if (char_I_actual_ppO2 < 175) |
| 292 | 2388 CNS_fraction += time_factor*0.00136; |
| 126 | 2389 else if (char_I_actual_ppO2 < 180) |
| 292 | 2390 CNS_fraction += time_factor*0.00180; |
| 126 | 2391 else if (char_I_actual_ppO2 < 185) |
| 292 | 2392 CNS_fraction += time_factor*0.00237; |
| 126 | 2393 else if (char_I_actual_ppO2 < 190) |
| 292 | 2394 CNS_fraction += time_factor*0.00310; |
| 126 | 2395 else if (char_I_actual_ppO2 < 195) |
| 292 | 2396 CNS_fraction += time_factor*0.00401; |
| 126 | 2397 else if (char_I_actual_ppO2 < 200) |
| 292 | 2398 CNS_fraction += time_factor*0.00517; |
| 126 | 2399 else if (char_I_actual_ppO2 < 230) |
| 292 | 2400 CNS_fraction += time_factor*0.0209; |
| 126 | 2401 else |
| 292 | 2402 CNS_fraction += time_factor*0.0482; // value for 2.5 |
| 116 | 2403 |
| 126 | 2404 if (CNS_fraction > 2.5) |
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2405 CNS_fraction = 2.55; |
| 126 | 2406 if (CNS_fraction < 0.0) |
| 2407 CNS_fraction = 0.0; | |
| 2408 | |
|
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2409 char_O_CNS_fraction = (unsigned char)(100.0 * CNS_fraction + 0.5); |
| 167 | 2410 } |
| 116 | 2411 |
| 167 | 2412 ////////////////////////////////////////////////////////////////////////////// |
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2413 // deco_calc_CNS_planning |
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2414 // |
| 488 | 2415 // Compute CNS during predicetd ascent. |
| 2416 // | |
| 2417 // Note: Needs a call to deco_push_tissues_to_vault(), | |
| 2418 // deco_pull_tissues_from_vault() to avoid trashing everything... | |
| 2419 // | |
| 2420 // Input: CNS_fraction, char_O_deco_time[], char_O_deco_depth[] | |
| 2421 // Output: CNS_fraction, char_O_CNS_fraction | |
| 2422 // | |
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2423 void deco_calc_CNS_planning(void) |
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2424 { |
|
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2425 overlay unsigned char backup_gas_last_depth; |
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2426 overlay unsigned char backup_gas_last_used; |
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2427 overlay unsigned short backup_gas_delay; |
|
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|
2428 overlay unsigned short backup_dive_mins; |
|
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BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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diff
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|
2429 overlay unsigned char backup_actual_ppO2; |
|
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BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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|
2430 |
|
439
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|
2431 RESET_C_STACK |
|
490
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|
2432 |
|
68aa097f0062
BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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|
2433 // Backup state machine |
|
68aa097f0062
BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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|
2434 backup_gas_last_depth = sim_gas_last_depth; |
|
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BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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diff
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|
2435 backup_gas_last_used = sim_gas_last_used; |
|
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BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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|
2436 backup_gas_delay = sim_gas_delay; |
|
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BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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|
2437 backup_dive_mins = sim_dive_mins; |
|
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|
2438 backup_actual_ppO2 = char_I_actual_ppO2; |
|
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BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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|
2439 |
|
439
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|
2440 // Uses 1min CNS period: |
|
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|
2441 char_I_step_is_1min = 1; |
|
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|
2442 |
|
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|
2443 //---- Retrieve bottom Gas used, and set variables. |
|
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BUGFIX: Decoplanner accumulates CNS during ascent (bug #55)
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|
2444 sim_gas_last_used = char_I_first_gas; |
|
443
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|
2445 sim_gas_last_depth = 0; // Surface gas marker. |
|
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|
2446 gas_switch_set(); // Sets initial calc_N2/He_ratio |
|
439
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|
2447 |
|
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|
2448 //---- CCR mode : do the full TTS at once -------------------------------- |
|
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|
2449 if( char_I_const_ppO2 != 0 ) |
|
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|
2450 { |
|
443
4c7f304de294
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changeset
|
2451 overlay unsigned short t; // Needs 16bits here ! |
|
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|
2452 char_I_actual_ppO2 = char_I_const_ppO2; |
|
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|
2453 for(t=0; t<int_O_ascenttime; ++t) |
|
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|
2454 deco_calc_CNS_fraction(); |
|
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|
2455 } |
|
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|
2456 else //---- OC mode : have to follow all gas switches... ----------------- |
|
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|
2457 { |
|
443
4c7f304de294
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changeset
|
2458 overlay unsigned char i = 0; // Decostop loop counter |
|
439
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|
2459 overlay float actual_ppO2; |
|
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|
2460 overlay unsigned char time, t; |
|
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|
2461 |
|
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|
2462 //---- Ascent to surface delay |
|
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diff
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|
2463 // NOTE: count as if time is spent with bottom pressure, |
|
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|
2464 // AND the bottom gas |
| 488 | 2465 actual_ppO2 = (pres_surface + char_I_bottom_depth * METER_TO_BAR - ppWater) |
|
439
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|
2466 * (1.0 - calc_N2_ratio - calc_He_ratio); |
|
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|
2467 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
|
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|
2468 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
|
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|
2469 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
|
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|
2470 |
|
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|
2471 // Ascent time (rounded up): |
|
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|
2472 time = (unsigned char)(0.1 * char_I_bottom_depth + 0.5); |
|
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|
2473 |
|
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|
2474 for(t=0; t<time; ++t) |
|
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|
2475 { |
|
439
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|
2476 deco_calc_CNS_fraction(); |
|
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|
2477 sim_dive_mins++; |
|
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|
2478 } |
|
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|
2479 |
|
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|
2480 //---- Do all further stops |
|
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diff
changeset
|
2481 for(i=0; i<NUM_STOPS; ++i) |
|
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|
2482 { |
|
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changeset
|
2483 //---- Get next stop |
|
b9cf06de8aca
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changeset
|
2484 time = char_O_deco_time[i]; |
|
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diff
changeset
|
2485 temp_depth_limit = char_O_deco_depth[i] & 0x7F; |
|
443
4c7f304de294
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diff
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|
2486 if( time == 0 ) break; // End of table: done. |
|
439
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|
2487 |
|
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diff
changeset
|
2488 //---- Gas Switch ? |
|
b9cf06de8aca
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diff
changeset
|
2489 if( char_O_deco_depth[i] & 0x80 ) |
|
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diff
changeset
|
2490 gas_switch_deepest(); |
|
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diff
changeset
|
2491 |
|
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diff
changeset
|
2492 //---- Convert Depth and N2_ratio to ppO2 |
| 488 | 2493 actual_ppO2 = (pres_surface + temp_depth_limit * METER_TO_BAR - ppWater) |
|
439
b9cf06de8aca
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diff
changeset
|
2494 * (1.0 - calc_N2_ratio - calc_He_ratio); |
|
b9cf06de8aca
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diff
changeset
|
2495 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
|
b9cf06de8aca
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diff
changeset
|
2496 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
|
b9cf06de8aca
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diff
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|
2497 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
|
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diff
changeset
|
2498 |
|
b9cf06de8aca
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diff
changeset
|
2499 //---- Apply the stop |
|
b9cf06de8aca
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diff
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|
2500 for(t=0; t<time; ++t) |
|
490
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diff
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|
2501 { |
|
439
b9cf06de8aca
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diff
changeset
|
2502 deco_calc_CNS_fraction(); |
|
490
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488
diff
changeset
|
2503 sim_dive_mins++; |
|
68aa097f0062
BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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diff
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|
2504 } |
|
439
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diff
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|
2505 } |
| 488 | 2506 } |
| 2507 | |
| 2508 // Back to normal mode... | |
| 2509 char_I_step_is_1min = 0; | |
|
490
68aa097f0062
BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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diff
changeset
|
2510 sim_gas_last_depth = backup_gas_last_depth; |
|
68aa097f0062
BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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diff
changeset
|
2511 sim_gas_last_used = backup_gas_last_used; |
|
68aa097f0062
BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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488
diff
changeset
|
2512 sim_gas_delay = backup_gas_delay; |
|
68aa097f0062
BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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488
diff
changeset
|
2513 sim_dive_mins = backup_dive_mins; |
|
68aa097f0062
BUGFIX (minor) deco_calc_CNS_planning should save ppO2 and gas switch history.
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diff
changeset
|
2514 char_I_actual_ppO2 = backup_actual_ppO2; |
|
439
b9cf06de8aca
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diff
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|
2515 } |
|
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diff
changeset
|
2516 |
|
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diff
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|
2517 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 2518 // deco_calc_CNS_decrease_15min |
| 2519 // | |
| 116 | 2520 // new in v.101 |
| 167 | 2521 // |
| 116 | 2522 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2523 // (Used in sleepmode, for low battery mode). |
| 167 | 2524 // |
| 116 | 2525 // Output: char_O_CNS_fraction |
| 2526 // Uses and Updates: CNS_fraction | |
| 167 | 2527 // |
| 116 | 2528 void deco_calc_CNS_decrease_15min(void) |
| 2529 { | |
| 237 | 2530 RESET_C_STACK |
| 2531 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
| 2532 | |
| 126 | 2533 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2534 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2535 } | |
| 116 | 2536 |
| 167 | 2537 ////////////////////////////////////////////////////////////////////////////// |
| 2538 // deco_calc_percentage | |
| 2539 // | |
| 116 | 2540 // new in v.101 |
| 167 | 2541 // |
| 116 | 2542 // calculates int_I_temp * char_I_temp / 100 |
| 2543 // output is int_I_temp | |
| 200 | 2544 // |
| 2545 // Used to compute NoFly remaining time. | |
|
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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|
2546 // |
| 116 | 2547 void deco_calc_percentage(void) |
| 2548 { | |
|
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
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116
diff
changeset
|
2549 RESET_C_STACK |
|
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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|
2550 |
| 237 | 2551 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 2552 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
| 2553 | |
|
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
changeset
|
2554 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2555 |
| 302 | 2556 assert( int_I_temp < 2880 ); // Less than 48h... |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2557 } |
|
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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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|
2558 |
|
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
changeset
|
2559 |
|
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
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|
2560 ////////////////////////////////////////////////////////////////////////////// |
|
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
changeset
|
2561 // deco_gas_volumes |
|
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diff
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|
2562 // |
|
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
changeset
|
2563 // new in v.111 |
|
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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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|
2564 // |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
changeset
|
2565 // calculates volumes for each gas. |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
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|
2566 // |
|
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
changeset
|
2567 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
d995e220ddac
BUGFIX Gas Usage when first gas is not #1 (bug BB22).
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diff
changeset
|
2568 // Gas list. |
|
d995e220ddac
BUGFIX Gas Usage when first gas is not #1 (bug BB22).
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diff
changeset
|
2569 // char_I_first_gas is the bottom gas. |
|
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
changeset
|
2570 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
234
bb8940caebe1
BUGFIX Gas Usage when stops are shallowest first: CF54 (bug BB24).
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233
diff
changeset
|
2571 // CF#54 == TRUE if shallowest stop first. |
|
478
fd8266b511cc
New SAC (CF56/CF57) in 5..50 l/min range (no more decimal).
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471
diff
changeset
|
2572 // CF#56 == bottom liters/minutes (5 .. 50) or bar/min. |
|
fd8266b511cc
New SAC (CF56/CF57) in 5..50 l/min range (no more decimal).
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471
diff
changeset
|
2573 // CF#57 == deco liters/minutes (5 .. 50) or bar/min. |
| 224 | 2574 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
222
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2575 // |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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diff
changeset
|
2576 void deco_gas_volumes(void) |
|
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Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2577 { |
| 338 | 2578 overlay float volumes[NUM_GAS]; |
|
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2579 overlay float bottom_usage, deco_usage; |
|
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2580 overlay unsigned char i, deepest_first; |
| 241 | 2581 overlay unsigned char gas; |
|
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2582 RESET_C_STACK |
|
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2583 |
|
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2584 //---- initialize with bottom consumption -------------------------------- |
| 338 | 2585 for(i=0; i<NUM_GAS; ++i) // Nothing yet... |
|
240
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2586 volumes[i] = 0.0; |
|
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2587 |
| 338 | 2588 assert(1 <= char_I_first_gas && char_I_first_gas <= NUM_GAS); |
| 241 | 2589 gas = char_I_first_gas - 1; |
| 2590 | |
|
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2591 bottom_usage = (float) read_custom_function(56); |
| 265 | 2592 if( bottom_usage > 0.0 ) |
| 2593 volumes[gas] | |
| 2594 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
| 2595 * char_I_bottom_time // in minutes. | |
| 2596 * bottom_usage; // In liter/minutes. | |
| 2597 else | |
| 2598 volumes[gas] = 65535.0; | |
|
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2599 |
|
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2600 //---- Ascent usage ------------------------------------------------------ |
|
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2601 |
|
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2602 deepest_first = read_custom_function(54) == 0; |
|
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2603 deco_usage = (float) read_custom_function(57); // In liter/minutes. |
|
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2604 |
| 224 | 2605 // Usage up to the first stop: |
| 2606 // - computed at MAX depth (easier, safer), | |
|
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2607 // - with an ascent speed of 10m/min. |
| 224 | 2608 // - with ascent litter / minutes. |
|
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2609 // - still using bottom gas: |
|
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2610 if( deco_usage > 0.0 ) |
| 265 | 2611 volumes[gas] |
| 2612 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar | |
| 2613 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) | |
|
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2614 * deco_usage; // Consumption ( xxx / min @ 1 bar) |
| 265 | 2615 else |
| 2616 volumes[gas] = 65535.0; | |
|
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2617 |
| 338 | 2618 for(i=0; i<NUM_STOPS; ++i) |
|
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2619 { |
| 241 | 2620 overlay unsigned char j; |
|
234
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2621 overlay unsigned char depth, time, ascent; |
|
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2622 |
|
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2623 // Manage stops in reverse order (CF#54) |
|
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2624 if( deepest_first ) |
|
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2625 { |
| 241 | 2626 time = char_O_deco_time[i]; |
|
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2627 if( time == 0 ) break; // End of table: done. |
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2628 |
|
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2629 ascent = depth = char_O_deco_depth[i] & 0x7F; |
|
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2630 if( i < 31 ) |
|
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2631 ascent -= char_O_deco_depth[i+1] & 0x7F; |
|
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2632 } |
|
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2633 else |
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2634 { |
|
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2635 time = char_O_deco_time[31-i]; |
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2636 if( time == 0 ) continue; // not yet: still searh table. |
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2637 |
|
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2638 ascent = depth = char_O_deco_depth[31-i] & 0x7F; |
|
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2639 if( i < 31 ) |
|
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2640 ascent -= char_O_deco_depth[30-i] & 0x7F; |
|
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2641 } |
|
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2642 |
|
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2643 // Gas switch depth ? |
| 338 | 2644 for(j=0; j<NUM_GAS; ++j) |
|
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2645 { |
|
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2646 if( depth <= char_I_deco_gas_change[j] ) |
| 241 | 2647 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 224 | 2648 gas = j; |
|
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2649 } |
|
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2650 |
|
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2651 // usage during stop: |
| 224 | 2652 // Note: because first gas is not in there, increment gas+1 |
|
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2653 if( deco_usage > 0.0 ) |
| 265 | 2654 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. |
| 2655 * time // in minutes. | |
|
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2656 * deco_usage // in xxx / min @ 1bar. |
| 265 | 2657 // Plus usage during ascent to the next stop, at 10m/min. |
| 2658 + (depth*0.1 + 1.0) | |
|
275
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2659 * ascent*0.1 // metre --> min |
|
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2660 * deco_usage; |
| 265 | 2661 else |
| 2662 volumes[gas] = 65535.0; | |
|
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2663 } |
|
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2664 |
|
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|
2665 //---- convert results for the ASM interface ----------------------------- |
| 338 | 2666 for(i=0; i<NUM_GAS; ++i) |
|
441
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2667 if( volumes[i] > 65534.0 ) |
| 224 | 2668 int_O_gas_volumes[i] = 65535; |
|
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2669 else |
|
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|
2670 int_O_gas_volumes[i] = (unsigned short)(volumes[i] + 0.5); |
| 116 | 2671 } |
| 2672 | |
| 167 | 2673 ////////////////////////////////////////////////////////////////////////////// |
| 2674 | |
| 116 | 2675 void deco_push_tissues_to_vault(void) |
| 2676 { | |
| 167 | 2677 overlay unsigned char x; |
|
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|
2678 RESET_C_STACK |
| 167 | 2679 |
| 116 | 2680 cns_vault = CNS_fraction; |
| 339 | 2681 for (x=0;x<NUM_COMP;x++) |
| 2682 { | |
| 2683 pres_tissue_N2_vault[x] = pres_tissue_N2[x]; | |
| 2684 pres_tissue_He_vault[x] = pres_tissue_He[x]; | |
| 2685 } | |
| 116 | 2686 } |
| 167 | 2687 |
| 116 | 2688 void deco_pull_tissues_from_vault(void) |
| 2689 { | |
| 167 | 2690 overlay unsigned char x; |
|
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2691 RESET_C_STACK |
| 167 | 2692 |
| 339 | 2693 for (x=0; x<NUM_COMP; x++) |
| 2694 { | |
| 2695 pres_tissue_N2[x] = pres_tissue_N2_vault[x]; | |
| 2696 pres_tissue_He[x] = pres_tissue_He_vault[x]; | |
| 2697 } | |
| 292 | 2698 |
| 2699 // Restore both CNS variable, too. | |
| 2700 CNS_fraction = cns_vault; | |
| 2701 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); | |
| 116 | 2702 } |
| 2703 | |
| 167 | 2704 ////////////////////////////////////////////////////////////////////////////// |
| 2705 // | |
| 184 | 2706 #ifndef CROSS_COMPILE |
| 2707 void main() {} | |
| 2708 #endif |