Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 488:7c48692dd17c
BUGFIX Missed surface pressure for CNS in decoplan.
| author | JeanDo |
|---|---|
| date | Mon, 17 Oct 2011 21:39:48 +0200 |
| parents | fd8266b511cc |
| children | 68aa097f0062 |
| 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 |
| 192 | 106 #include "shared_definitions.h" |
| 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 |
| 167 | 113 // ************************* |
| 114 // ** P R O T O T Y P E S ** | |
| 115 // ************************* | |
| 116 | |
| 117 static void calc_hauptroutine(void); | |
| 118 static void calc_nullzeit(void); | |
| 119 | |
| 192 | 120 static void calc_tissue(PARAMETER unsigned char period); |
| 258 | 121 static void calc_limit(void); |
| 192 | 122 |
| 167 | 123 static void clear_tissue(void); |
| 124 static void calc_ascenttime(void); | |
| 125 static void update_startvalues(void); | |
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126 static void clear_deco_table(void); |
| 471 | 127 static unsigned char update_deco_table(void); |
| 192 | 128 |
| 129 static void backup_sim_pres_tissue(void); | |
| 130 static void restore_sim_pres_tissue(void); | |
| 131 static void sim_tissue(PARAMETER unsigned char period); | |
| 132 static void sim_limit(PARAMETER float GF_current); | |
|
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133 static void sim_extra_time(void); |
| 368 | 134 static void calc_dive_interval(void); |
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135 |
| 167 | 136 static void calc_gradient_factor(void); |
| 137 static void calc_wo_deco_step_1_min(void); | |
| 138 | |
| 139 static void calc_hauptroutine_data_input(void); | |
| 140 static void calc_hauptroutine_update_tissues(void); | |
| 141 static void calc_hauptroutine_calc_deco(void); | |
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142 static void sim_ascent_to_first_stop(void); |
| 167 | 143 |
| 241 | 144 static unsigned char gas_switch_deepest(void); |
| 145 static void gas_switch_set(void); | |
| 217 | 146 |
| 241 | 147 static unsigned char calc_nextdecodepth(void); |
| 116 | 148 |
| 200 | 149 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 150 #pragma udata bank4=0x400 |
| 116 | 151 |
| 152 static float temp_limit; | |
| 153 static float GF_low; | |
| 154 static float GF_high; | |
| 155 static float GF_delta; | |
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156 static float low_depth; // Depth of deepest stop |
| 192 | 157 static float locked_GF_step; // GF_delta / low_depth |
| 158 | |
| 159 static unsigned char temp_depth_limit; | |
| 171 | 160 |
| 192 | 161 // Simulation context: used to predict ascent. |
| 162 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 163 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 164 |
| 192 | 165 // Real context: what we are doing now. |
| 166 static float calc_lead_tissue_limit; // | |
| 116 | 167 |
| 338 | 168 static unsigned char internal_deco_time[NUM_STOPS]; |
| 169 static unsigned char internal_deco_depth[NUM_STOPS]; | |
| 116 | 170 |
| 171 static float cns_vault; | |
| 339 | 172 static float pres_tissue_N2_vault[NUM_COMP]; |
| 173 static float pres_tissue_He_vault[NUM_COMP]; | |
| 116 | 174 |
| 163 | 175 //---- Bank 5 parameters ----------------------------------------------------- |
| 176 #pragma udata bank5=0x500 | |
| 177 | |
| 167 | 178 static unsigned char ci; |
| 116 | 179 static float pres_respiration; |
| 180 static float pres_surface; | |
| 181 static float temp_deco; | |
| 236 | 182 static float ppN2; |
| 200 | 183 static float ppHe; |
| 116 | 184 static float temp_tissue; |
| 200 | 185 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 186 static float He_ratio; // Breathed gas helium ratio. | |
| 187 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 188 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 189 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 190 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 191 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 192 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 193 |
| 338 | 194 static float pres_diluent; // new in v.101 |
| 195 static float const_ppO2; // new in v.101 | |
| 116 | 196 |
| 241 | 197 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
| 198 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
| 203 | 199 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 200 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 201 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 202 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 203 static float CNS_fraction; // new in v.101 | |
| 204 static float float_saturation_multiplier; // new in v.101 | |
| 205 static float float_desaturation_multiplier; // new in v.101 | |
| 338 | 206 static float float_deco_distance; // new in v.101 |
| 207 static char flag_in_divemode; // new in v.108 | |
| 167 | 208 |
| 338 | 209 static unsigned char deco_gas_change[NUM_GAS]; // new in v.109 |
| 167 | 210 |
| 163 | 211 //---- Bank 6 parameters ----------------------------------------------------- |
| 212 #pragma udata bank6=0x600 | |
| 116 | 213 |
| 339 | 214 float pres_tissue_N2[NUM_COMP]; |
| 215 float pres_tissue_He[NUM_COMP]; | |
| 116 | 216 |
| 163 | 217 //---- Bank 7 parameters ----------------------------------------------------- |
| 218 #pragma udata bank7=0x700 | |
| 219 | |
| 339 | 220 float sim_pres_tissue_N2[NUM_COMP]; // 32 floats = 128 bytes. |
| 221 float sim_pres_tissue_He[NUM_COMP]; // 32 floats = 128 bytes. | |
| 222 static float sim_pres_tissue_backup_N2[NUM_COMP]; | |
| 223 static float sim_pres_tissue_backup_He[NUM_COMP]; | |
| 116 | 224 |
| 163 | 225 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 226 #pragma udata bank8=0x800 |
| 163 | 227 |
| 116 | 228 static char md_pi_subst[256]; |
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229 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 230 |
| 163 | 231 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 232 #pragma udata bank9=0x900 |
| 116 | 233 |
| 163 | 234 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 235 |
| 164 | 236 // internal, dbg: |
| 167 | 237 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 238 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 239 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 224 | 240 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
| 241 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
| 164 | 242 static float DBG_pres_surface; // new in v.108 |
| 243 static float DBG_GF_low; // new in v.108 | |
| 244 static float DBG_GF_high; // new in v.108 | |
| 245 static float DBG_const_ppO2; // new in v.108 | |
| 246 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 247 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 248 static float DBG_float_deco_distance; // new in v.108 | |
| 249 static float DBG_N2_ratio; // new in v.108 | |
| 250 static float DBG_He_ratio; // new in v.108 | |
| 251 | |
| 167 | 252 ////////////////////////////////////////////////////////////////////////////// |
| 253 ////////////////////////////////////////////////////////////////////////////// | |
| 254 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 255 ////////////////////////////////////////////////////////////////////////////// | |
| 256 ////////////////////////////////////////////////////////////////////////////// | |
| 257 // | |
| 258 // End of PROM code is 17F00, So push tables on PROM top... | |
| 259 // | |
| 260 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 261 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 262 |
| 167 | 263 // Magic table to compute the MD2 HASH |
| 264 // | |
| 265 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 266 rom const rom unsigned short md_pi[] = |
| 116 | 267 { |
| 268 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 269 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 270 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 271 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 272 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 273 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 274 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 275 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 276 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 277 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 278 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 279 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 280 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 281 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 282 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 283 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 284 }; | |
| 285 | |
| 167 | 286 ////////////////////////////////////////////////////////////////////////////// |
| 287 ////////////////////////////////////////////////////////////////////////////// | |
| 288 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 289 ////////////////////////////////////////////////////////////////////////////// | |
| 290 ////////////////////////////////////////////////////////////////////////////// | |
| 291 // | |
| 116 | 292 // all new in v.102 |
| 293 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 294 | |
| 295 #pragma code p2_deco = 0x0C000 | |
| 296 | |
| 167 | 297 ////////////////////////////////////////////////////////////////////////////// |
| 298 // DBS - debug on start of dive | |
| 299 // | |
| 300 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 301 { |
| 167 | 302 overlay char i; // Local loop index. |
| 303 | |
| 304 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 305 int_O_DBS_bitfield = 0; |
| 306 int_O_DBS2_bitfield = 0; | |
| 307 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 308 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 309 else | |
| 310 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 311 int_O_DBG_post_bitfield = 0; | |
| 167 | 312 |
| 313 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 314 char_O_NDL_at_20mtr = 255; |
| 315 | |
| 167 | 316 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 317 DBG_N2_ratio = N2_ratio; |
| 318 DBG_He_ratio = He_ratio; | |
| 319 DBG_char_I_deco_model = char_I_deco_model; | |
| 320 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 321 DBG_pres_surface = pres_surface; | |
| 322 DBG_GF_low = GF_low; | |
| 323 DBG_GF_high = GF_high; | |
| 324 DBG_const_ppO2 = const_ppO2; | |
| 224 | 325 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 326 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 327 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 328 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 329 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 330 DBG_float_deco_distance = float_deco_distance; | |
| 331 | |
| 167 | 332 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 333 if(char_I_deco_model) |
| 334 int_O_DBS_bitfield |= DBS_mode; | |
| 335 if(const_ppO2) | |
| 336 int_O_DBS_bitfield |= DBS_ppO2; | |
| 339 | 337 for(i = 0; i < NUM_COMP; i++) |
| 338 if(pres_tissue_He[i]) | |
| 116 | 339 int_O_DBS_bitfield |= DBS_HE_sat; |
| 340 if(float_saturation_multiplier < 0.99) | |
| 341 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 342 if(float_saturation_multiplier > 1.3) | |
| 343 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 344 if(GF_low < 0.19) | |
| 345 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 346 if(GF_low > 1.01) | |
| 347 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 348 if(GF_high < 0.6) | |
| 349 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 350 if(GF_high > 1.01) | |
| 351 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 352 if((N2_ratio + He_ratio) > 0.95) | |
| 353 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 354 if((N2_ratio + He_ratio) < 0.05) | |
| 355 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 356 if(float_deco_distance > 0.25) | |
| 357 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 358 if(char_I_depth_last_deco > 8) | |
| 359 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 360 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 361 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 362 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 363 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 364 if(pres_respiration > 3.0) | |
| 365 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 366 if(pres_surface - pres_respiration > 0.2) | |
| 367 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 368 if(pres_surface < 0.75) | |
| 369 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 370 if(pres_surface > 1.11) | |
| 371 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 372 if(float_desaturation_multiplier < 0.70) | |
| 373 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 374 if(float_desaturation_multiplier > 1.01) | |
| 375 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 376 if(GF_low > GF_high) | |
| 377 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 378 } | |
| 379 | |
| 167 | 380 ////////////////////////////////////////////////////////////////////////////// |
| 381 // DBG - set DBG to end_of_dive | |
| 382 // | |
| 383 static void set_dbg_end_of_dive(void) | |
| 116 | 384 { |
| 385 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 386 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 387 } | |
| 388 | |
| 167 | 389 ////////////////////////////////////////////////////////////////////////////// |
| 390 // DBG - NDL at first 20 m. hit | |
| 391 // | |
| 392 static void check_ndl(void) | |
| 116 | 393 { |
| 167 | 394 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 395 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 396 ) | |
| 116 | 397 { |
| 167 | 398 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 399 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 400 char_O_NDL_at_20mtr = 254; |
| 116 | 401 } |
| 402 } | |
| 403 | |
| 167 | 404 ////////////////////////////////////////////////////////////////////////////// |
| 405 // DBG - multi main during dive | |
| 406 // | |
| 184 | 407 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 408 { |
| 203 | 409 overlay unsigned short temp_DBS = 0; |
| 200 | 410 overlay unsigned char i; // Local loop index. |
| 167 | 411 |
| 116 | 412 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 413 temp_DBS |= DBG_c_gas; | |
| 414 if(DBG_const_ppO2 != const_ppO2) | |
| 415 temp_DBS |= DBG_c_ppO2; | |
| 167 | 416 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 417 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 418 ) | |
| 116 | 419 temp_DBS |= DBG_CdeSAT; |
| 420 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 421 temp_DBS |= DBG_C_MODE; | |
| 422 if(DBG_pres_surface != pres_surface) | |
| 423 temp_DBS |= DBG_C_SURF; | |
| 167 | 424 |
| 425 if( !DBS_HE_sat && !He_ratio) | |
| 339 | 426 for(i = 0; i < NUM_COMP; i++) |
| 427 if(pres_tissue_He[i]) | |
| 116 | 428 temp_DBS |= DBG_HEwoHE; |
| 167 | 429 |
| 225 | 430 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 431 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 432 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 433 temp_DBS |= DBG_C_DGAS; |
| 167 | 434 |
| 116 | 435 if(DBG_float_deco_distance != float_deco_distance) |
| 436 temp_DBS |= DBG_C_DIST; | |
| 437 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 438 temp_DBS |= DBG_C_LAST; | |
| 167 | 439 if( DBG_GF_low != GF_low |
| 440 || DBG_GF_high != GF_high ) | |
| 116 | 441 temp_DBS |= DBG_C_GF; |
| 442 if(pres_respiration > 13.0) | |
| 443 temp_DBS |= DBG_PHIGH; | |
| 444 if(pres_surface - pres_respiration > 0.2) | |
| 445 temp_DBS |= DBG_PLOW; | |
| 446 if(is_post_check) | |
| 447 int_O_DBG_post_bitfield |= temp_DBS; | |
| 448 else | |
| 449 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 450 } | |
| 451 | |
| 167 | 452 ////////////////////////////////////////////////////////////////////////////// |
| 453 // DBG - prior to calc. of dive | |
| 454 // | |
| 455 static void check_pre_dbg(void) | |
| 116 | 456 { |
| 457 check_dbg(0); | |
| 458 } | |
| 459 | |
| 167 | 460 ////////////////////////////////////////////////////////////////////////////// |
| 461 // DBG - after decocalc of dive | |
| 462 // | |
| 463 static void check_post_dbg(void) | |
| 116 | 464 { |
| 465 check_dbg(1); | |
| 466 } | |
| 467 | |
| 165 | 468 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 469 ////////////////////////////////////////////////////////////////////////////// |
| 470 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 471 ////////////////////////////////////////////////////////////////////////////// | |
| 472 ////////////////////////////////////////////////////////////////////////////// | |
| 473 | |
| 235 | 474 ////////////////////////////////////////////////////////////////////////////// |
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475 // Bump to blue-screen when an assert is wrong |
| 235 | 476 #ifdef __DEBUG |
| 477 void assert_failed(PARAMETER short int line) | |
| 478 { | |
| 479 extern void PLED_resetdebugger(void); | |
| 480 extern unsigned short temp10; | |
| 481 | |
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482 temp10 = line; // Show source line number as stack depth. |
| 235 | 483 PLED_resetdebugger(); |
| 484 } | |
| 485 #endif | |
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486 |
| 235 | 487 ////////////////////////////////////////////////////////////////////////////// |
| 488 // When calling C code from ASM context, the data stack pointer and | |
| 489 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
| 490 | |
| 491 #ifdef CROSS_COMPILE | |
| 492 # define RESET_C_STACK | |
| 493 #else | |
| 494 # ifdef __DEBUG | |
| 495 # define RESET_C_STACK fillDataStack(); | |
| 496 void fillDataStack(void) | |
| 497 { | |
| 498 _asm | |
| 499 LFSR 1,C_STACK | |
| 500 MOVLW 0xCC | |
| 501 loop: MOVWF POSTINC1,0 | |
| 502 TSTFSZ FSR1L,0 | |
| 503 BRA loop | |
| 504 | |
| 505 LFSR 1,C_STACK | |
| 506 LFSR 2,C_STACK | |
| 507 _endasm | |
| 508 } | |
| 509 # else | |
| 510 # define RESET_C_STACK \ | |
| 511 _asm \ | |
| 512 LFSR 1, C_STACK \ | |
| 513 LFSR 2, C_STACK \ | |
| 514 _endasm | |
| 515 # endif | |
| 516 #endif | |
| 517 | |
| 518 ////////////////////////////////////////////////////////////////////////////// | |
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519 // Read CF values from the C code. |
| 235 | 520 |
| 488 | 521 #ifdef CROSS_COMPILE |
| 522 // Full description of the OSTC EEPROM map, including CF values. | |
| 523 # include "OSTC_eeprom.h" | |
| 524 #endif | |
| 525 | |
| 203 | 526 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 527 { |
| 184 | 528 #ifdef CROSS_COMPILE |
| 488 | 529 return (cf & 32) ? eeprom.bank1_CF[cf-32].value |
| 530 : eeprom.bank0_CF[cf ].value; | |
| 184 | 531 #else |
| 167 | 532 extern unsigned char hi, lo; |
| 533 extern void getcustom15(); | |
| 534 _asm | |
| 535 movff cf,WREG | |
| 536 call getcustom15,0 | |
| 537 movff lo,PRODL | |
| 538 movff hi,PRODH | |
| 539 _endasm | |
| 184 | 540 #endif |
| 167 | 541 } |
| 542 | |
| 543 ////////////////////////////////////////////////////////////////////////////// | |
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544 // Fast subroutine to read RTC timer 3. |
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545 // Note: result is in 1/32 of msecs. |
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546 static unsigned short tmr3(void) |
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547 { |
| 261 | 548 #ifndef CROSS_COMPILE |
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549 _asm |
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550 movff 0xfb2,PRODL // TMR3L |
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551 movff 0xfb3,PRODH // TMR3H |
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552 _endasm // result in PRODH:PRODL. |
| 261 | 553 #else |
| 554 return 0; | |
| 555 #endif | |
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556 } |
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557 |
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558 ////////////////////////////////////////////////////////////////////////////// |
| 258 | 559 // read buhlmann tables A and B for compatriment ci |
| 560 // | |
| 561 static void read_buhlmann_coefficients(void) | |
| 165 | 562 { |
| 338 | 563 |
| 184 | 564 #ifndef CROSS_COMPILE |
| 167 | 565 // Note: we don't use far rom pointer, because the |
| 338 | 566 // 24 bits is too complex, hence we have to set |
| 167 | 567 // the UPPER page ourself... |
| 568 // --> Set zero if tables are moved to lower pages ! | |
| 569 _asm | |
| 570 movlw 1 | |
| 571 movwf TBLPTRU,0 | |
| 572 _endasm | |
| 184 | 573 #endif |
| 258 | 574 |
| 338 | 575 assert( 0 <= ci && ci < NUM_COMP ); |
| 576 | |
| 577 // Use an interleaved array (AoS) to access coefficients with a | |
| 578 // single addressing. | |
| 579 { | |
| 580 overlay rom const float* ptr = &buhlmann_ab[4*ci]; | |
| 581 var_N2_a = *ptr++; | |
| 582 var_N2_b = *ptr++; | |
| 583 var_He_a = *ptr++; | |
| 584 var_He_b = *ptr++; | |
| 585 } | |
| 167 | 586 |
| 165 | 587 // Check reading consistency: |
| 588 if( (var_N2_a < 0.231) | |
| 589 || (var_N2_a > 1.27) | |
| 590 || (var_N2_b < 0.504) | |
| 591 || (var_N2_b > 0.966) | |
| 592 || (var_He_a < 0.510) | |
| 593 || (var_He_a > 1.75) | |
| 594 || (var_He_b < 0.423) | |
| 595 || (var_He_b > 0.927) | |
| 596 ) | |
| 258 | 597 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; |
| 598 } | |
| 599 | |
| 600 ////////////////////////////////////////////////////////////////////////////// | |
| 601 // read buhlmann tables for compatriment ci | |
| 602 // If period == 0 : 2sec interval | |
| 603 // 1 : 1 min interval | |
| 604 // 2 : 10 min interval. | |
| 605 static void read_buhlmann_times(PARAMETER char period) | |
| 606 { | |
| 607 #ifndef CROSS_COMPILE | |
| 608 // Note: we don't use far rom pointer, because the | |
| 609 // 24 bits is to complex, hence we have to set | |
| 610 // the UPPER page ourself... | |
| 611 // --> Set zero if tables are moved to lower pages ! | |
| 612 _asm | |
| 613 movlw 1 | |
| 614 movwf TBLPTRU,0 | |
| 615 _endasm | |
| 616 #endif | |
| 338 | 617 |
| 618 assert( 0 <= ci && ci < NUM_COMP ); | |
| 258 | 619 |
| 165 | 620 // Integration intervals. |
| 167 | 621 switch(period) |
| 165 | 622 { |
| 623 case 0: //---- 2 sec ----------------------------------------------------- | |
| 338 | 624 { |
| 625 overlay rom const float* ptr = &e2secs[2*ci]; | |
| 626 var_N2_e = *ptr++; | |
| 627 var_He_e = *ptr++; | |
| 628 } | |
| 165 | 629 |
| 630 // Check reading consistency: | |
| 631 if( (var_N2_e < 0.0000363) | |
| 632 || (var_N2_e > 0.00577) | |
| 633 || (var_He_e < 0.0000961) | |
| 634 || (var_He_e > 0.150) | |
| 635 ) | |
| 636 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 637 | |
| 638 break; | |
| 639 | |
| 640 case 1: //---- 1 min ----------------------------------------------------- | |
| 338 | 641 { |
| 642 overlay rom const float* ptr = &e1min[2*ci]; | |
| 643 var_N2_e = *ptr++; | |
| 644 var_He_e = *ptr++; | |
| 645 } | |
| 165 | 646 |
| 647 // Check reading consistency: | |
| 648 if( (var_N2_e < 1.09E-3) | |
| 649 || (var_N2_e > 0.1592) | |
| 650 || (var_He_e < 0.00288) | |
| 651 || (var_He_e > 0.3682) | |
| 652 ) | |
| 653 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 654 | |
| 655 break; | |
| 656 | |
| 657 case 2: //---- 10 min ---------------------------------------------------- | |
| 338 | 658 { |
| 659 overlay rom const float* ptr = &e10min[2*ci]; | |
| 660 var_N2_e = *ptr++; | |
| 661 var_He_e = *ptr++; | |
| 662 } | |
| 165 | 663 |
| 664 // Check reading consistency: | |
| 665 if( (var_N2_e < 0.01085) | |
| 666 || (var_N2_e > 0.82323) | |
| 667 || (var_He_e < 0.02846) | |
| 668 || (var_He_e > 0.98986) | |
| 669 ) | |
| 670 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 671 | |
| 672 break; | |
| 197 | 673 |
| 674 default: | |
| 675 assert(0); // Never go there... | |
| 165 | 676 } |
| 677 } | |
| 678 | |
| 679 ////////////////////////////////////////////////////////////////////////////// | |
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680 // calc_nextdecodepth |
| 165 | 681 // |
| 116 | 682 // new in v.102 |
| 165 | 683 // |
| 116 | 684 // INPUT, changing during dive: |
| 192 | 685 // low_depth |
| 167 | 686 // |
| 116 | 687 // INPUT, fixed during dive: |
| 167 | 688 // pres_surface |
| 689 // GF_delta | |
| 690 // GF_high | |
| 691 // GF_low | |
| 171 | 692 // char_I_depth_last_deco |
| 167 | 693 // float_deco_distance |
| 694 // | |
| 241 | 695 // RETURN TRUE iff a stop is needed. |
| 696 // | |
| 116 | 697 // OUTPUT |
| 171 | 698 // locked_GF_step |
| 167 | 699 // temp_depth_limt |
| 192 | 700 // low_depth |
| 167 | 701 // |
| 241 | 702 static unsigned char calc_nextdecodepth(void) |
| 167 | 703 { |
| 241 | 704 //--- Max ascent speed --------------------------------------------------- |
| 705 // Recompute leading gas limit, at current depth: | |
| 317 | 706 overlay float depth = (temp_deco - pres_surface) * BAR_TO_METER; |
| 241 | 707 |
| 708 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
| 302 | 709 overlay float min_depth = (depth > 10.0) ? (depth - 10.0) : 0.0; |
| 241 | 710 |
| 711 // Do we need to stop at current depth ? | |
| 712 overlay unsigned char need_stop = 0; | |
| 713 | |
| 714 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
| 715 | |
| 212 | 716 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 717 if (char_I_deco_model == 1) |
| 718 { | |
| 241 | 719 if( depth >= low_depth ) |
| 192 | 720 sim_limit( GF_low ); |
| 721 else | |
| 722 sim_limit( GF_high - depth * locked_GF_step ); | |
| 723 | |
| 724 // Stops are needed ? | |
| 725 if( sim_lead_tissue_limit > pres_surface ) | |
| 726 { | |
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727 // Compute tolerated depth, for the leading tissue [metre]: |
| 317 | 728 overlay float depth_tol = (sim_lead_tissue_limit - pres_surface) * BAR_TO_METER; |
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729 |
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730 // Deepest stop, in multiples of 3 metres. |
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731 overlay unsigned char first_stop = 3 * (short)(0.99999 + depth_tol * 0.33333 ); |
| 192 | 732 assert( first_stop < 128 ); |
| 171 | 733 |
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734 // Is it a new deepest needed stop ? If yes this is the reference for |
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735 // the varying gradient factor. So reset that: |
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736 if( depth_tol > min_depth && depth_tol > low_depth ) |
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737 { |
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738 // Store the deepest stop depth, as reference for GF_low. |
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739 low_depth = depth_tol; |
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740 locked_GF_step = GF_delta / low_depth; |
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741 } |
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742 |
| 264 | 743 #if defined(__DEBUG) || defined(CROSS_COMPILE) |
| 261 | 744 { |
| 745 // Extra testing code to make sure the first_stop formula | |
| 746 // and rounding provides correct depth: | |
| 317 | 747 overlay float pres_stop = first_stop * METER_TO_BAR |
| 261 | 748 + pres_surface; |
| 749 | |
| 750 // Keep GF_low until a first stop depth is found: | |
| 751 if( first_stop >= low_depth ) | |
| 752 sim_limit( GF_low ); | |
| 753 else | |
| 754 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 755 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 756 sim_limit( GF_high - first_stop * locked_GF_step ); | |
| 757 | |
| 302 | 758 // upper limit (lowest pressure tolerated), + 1mbar for rounding...: |
| 759 assert( sim_lead_tissue_limit < (pres_stop + 0.001) ); | |
| 261 | 760 } |
| 761 #endif | |
| 762 | |
| 212 | 763 // Apply correction for the shallowest stop. |
| 192 | 764 if( first_stop == 3 ) // new in v104 |
| 765 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 766 |
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767 // Because gradient factor at first_stop might be bigger than at |
| 261 | 768 // current depth, we might ascent a bit more. |
| 769 // Hence, check all stops until one is indeed higher than tolerated presure: | |
| 770 while(first_stop > 0) | |
| 192 | 771 { |
| 772 overlay unsigned char next_stop; // Next index (0..30) | |
| 773 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 774 |
| 241 | 775 // Check max speed, or reaching surface. |
| 776 if( first_stop <= min_depth ) | |
| 777 break; | |
| 778 | |
| 779 // So, there is indeed a stop needed: | |
| 780 need_stop = 1; | |
| 781 | |
| 192 | 782 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 783 next_stop = 0; | |
| 216 | 784 else if( first_stop == 6 ) |
| 785 next_stop = char_I_depth_last_deco; | |
| 192 | 786 else |
| 787 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 788 |
| 317 | 789 pres_stop = next_stop * METER_TO_BAR |
| 192 | 790 + pres_surface; |
| 791 | |
| 212 | 792 // Keep GF_low until a first stop depth is found: |
| 793 if( next_stop >= low_depth ) | |
| 794 sim_limit( GF_low ); | |
| 795 else | |
| 796 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 797 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 798 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 799 |
| 192 | 800 // upper limit (lowest pressure tolerated): |
| 801 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 802 break; | |
| 803 | |
| 804 // Else, validate that stop and loop... | |
| 805 first_stop = next_stop; | |
| 212 | 806 } |
| 807 | |
| 808 // next stop is the last validated depth found, aka first_stop | |
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809 temp_depth_limit = first_stop; // Stop depth, in metre. |
| 192 | 810 } |
| 171 | 811 else |
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812 temp_depth_limit = 0; // stop depth, in metre. |
| 116 | 813 } |
| 167 | 814 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 815 { |
| 192 | 816 overlay float pres_gradient; |
| 817 | |
| 818 // Original model | |
| 116 | 819 // optimized in v.101 |
| 171 | 820 // char_I_depth_last_deco included in v.101 |
| 116 | 821 |
| 192 | 822 // Compute sim_lead_tissue_limit too, but just once. |
| 823 sim_limit(1.0); | |
| 824 | |
| 825 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 826 if (pres_gradient >= 0) |
| 116 | 827 { |
| 317 | 828 pres_gradient *= BAR_TO_METER/3; // Bar --> stop number; |
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829 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
| 241 | 830 need_stop = 1; // Hit. |
| 831 | |
| 832 // Implement last stop at 4m/5m/6m... | |
| 833 if( temp_depth_limit == 3 ) | |
| 834 temp_depth_limit = char_I_depth_last_deco; | |
| 171 | 835 } |
| 116 | 836 else |
| 241 | 837 temp_depth_limit = 0; |
| 171 | 838 } |
| 212 | 839 |
| 217 | 840 //---- Check gas change -------------------------------------------------- |
| 241 | 841 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
| 842 | |
| 843 return need_stop; | |
| 167 | 844 } |
| 116 | 845 |
| 167 | 846 ////////////////////////////////////////////////////////////////////////////// |
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847 // copy_deco_table |
| 167 | 848 // |
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849 // Buffer the stops, once computed, so we can continue to display them |
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850 // while computing the next set. |
| 167 | 851 // |
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852 static void copy_deco_table(void) |
| 116 | 853 { |
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854 // Copy depth of the first (deepest) stop, because when reversing |
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855 // order, it will be hard to find... |
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856 char_O_first_deco_depth = internal_deco_depth[0] & 0x7F; |
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857 char_O_first_deco_time = internal_deco_time [0]; |
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858 |
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859 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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860 { |
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861 overlay unsigned char x, y; |
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862 |
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863 //---- First: search the first non-null depth |
| 339 | 864 for(x=(NUM_STOPS-1); x != 0; --x) |
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865 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 866 |
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867 //---- Second: copy to output table (in reverse order) |
| 338 | 868 for(y=0; y<NUM_STOPS; y++, --x) |
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869 { |
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870 char_O_deco_depth[y] = internal_deco_depth[x]; |
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871 char_O_deco_time [y] = internal_deco_time [x]; |
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872 |
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873 // Stop only once the last transfer is done. |
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874 if( x == 0 ) break; |
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875 } |
| 116 | 876 |
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877 //---- Third: fill table end with null |
| 339 | 878 for(y++; y<NUM_STOPS; y++) |
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879 { |
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880 char_O_deco_time [y] = 0; |
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881 char_O_deco_depth[y] = 0; |
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882 } |
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883 } |
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884 else //---- Straight copy ------------------------------------------------ |
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885 { |
| 167 | 886 overlay unsigned char x; |
| 887 | |
| 339 | 888 for(x=0; x<NUM_STOPS; x++) |
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889 { |
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890 char_O_deco_depth[x] = internal_deco_depth[x]; |
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891 char_O_deco_time [x] = internal_deco_time [x]; |
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892 } |
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893 } |
| 167 | 894 } |
| 116 | 895 |
| 167 | 896 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 897 // temp_tissue_safety // |
| 167 | 898 // |
| 116 | 899 // outsourced in v.102 |
| 167 | 900 // |
| 901 // Apply safety factors for brand ZH-L16 model. | |
| 902 // | |
| 903 static void temp_tissue_safety(void) | |
| 116 | 904 { |
| 197 | 905 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 906 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 907 | |
| 167 | 908 if( char_I_deco_model == 0 ) |
| 116 | 909 { |
| 910 if (temp_tissue < 0.0) | |
| 126 | 911 temp_tissue *= float_desaturation_multiplier; |
| 116 | 912 else |
| 126 | 913 temp_tissue *= float_saturation_multiplier; |
| 116 | 914 } |
| 167 | 915 } |
| 116 | 916 |
| 167 | 917 ////////////////////////////////////////////////////////////////////////////// |
| 918 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 919 // ** THE JUMP-IN CODE ** |
| 920 // ** for the asm code ** | |
| 167 | 921 ////////////////////////////////////////////////////////////////////////////// |
| 922 ////////////////////////////////////////////////////////////////////////////// | |
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923 |
| 167 | 924 ////////////////////////////////////////////////////////////////////////////// |
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925 // Called every 2 seconds during diving. |
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926 // update tissues every time. |
| 184 | 927 // |
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928 // Every 6 seconds (or slower when TTS > 16): |
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929 // - update deco table (char_O_deco_time/depth) with new values. |
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930 // - update ascent time, |
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931 // - set status to zero (so we can check there is new results). |
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932 // |
| 116 | 933 void deco_calc_hauptroutine(void) |
| 934 { | |
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935 RESET_C_STACK |
| 116 | 936 calc_hauptroutine(); |
| 937 int_O_desaturation_time = 65535; | |
| 938 } | |
| 939 | |
| 167 | 940 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 941 // Reset decompression model: |
| 942 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 943 // + Reset last stop to 0m | |
| 944 // + Reset all model output. | |
| 116 | 945 void deco_clear_tissue(void) |
| 946 { | |
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947 RESET_C_STACK |
| 116 | 948 clear_tissue(); |
| 949 } | |
| 950 | |
| 167 | 951 ////////////////////////////////////////////////////////////////////////////// |
| 278 | 952 // Called every 1 min during decoplanning. |
| 953 // Update tissues for 1 min. | |
| 954 // | |
| 955 void deco_calc_tissue(void) | |
| 956 { | |
| 957 RESET_C_STACK | |
| 958 calc_hauptroutine_update_tissues(); | |
| 959 } | |
| 960 | |
| 961 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 962 |
| 116 | 963 void deco_calc_wo_deco_step_1_min(void) |
| 964 { | |
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965 RESET_C_STACK |
| 116 | 966 calc_wo_deco_step_1_min(); |
| 967 deco_calc_desaturation_time(); | |
| 968 } | |
| 969 | |
| 167 | 970 ////////////////////////////////////////////////////////////////////////////// |
| 971 | |
| 368 | 972 void deco_calc_dive_interval(void) |
| 973 { | |
| 974 RESET_C_STACK | |
| 975 calc_dive_interval(); | |
| 976 } | |
| 977 | |
| 978 ////////////////////////////////////////////////////////////////////////////// | |
| 979 | |
| 116 | 980 void deco_debug(void) |
| 981 { | |
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982 RESET_C_STACK |
| 116 | 983 } |
| 984 | |
| 241 | 985 |
| 986 ////////////////////////////////////////////////////////////////////////////// | |
| 987 // Find current gas in the list (if any). | |
| 988 // | |
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989 // Input: char_I_current_gas. |
| 241 | 990 // |
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991 // Output: sim_gas_last_depth, temp_depth_limit. |
| 241 | 992 // |
| 993 static void gas_switch_find_current(void) | |
| 994 { | |
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995 assert( 0 <= char_I_current_gas && char_I_current_gas <= (NUM_GAS+1) ); |
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996 |
| 388 | 997 if( char_I_current_gas <= NUM_GAS ) // Gas1..Gas5 |
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998 { |
| 388 | 999 sim_gas_last_used = char_I_current_gas; |
| 1000 | |
| 1001 // Note: if current is first gas, we must find it, but not set | |
| 1002 // last depth change to surface. | |
| 1003 if( char_I_deco_gas_change[sim_gas_last_used-1] ) | |
| 1004 sim_gas_last_depth = char_I_deco_gas_change[sim_gas_last_used-1]; | |
| 241 | 1005 } |
| 388 | 1006 else |
| 1007 sim_gas_last_used = 0; // Gas 6 = manual set | |
| 241 | 1008 } |
| 1009 | |
| 167 | 1010 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 1011 // Find deepest available gas. |
| 201 | 1012 // |
| 241 | 1013 // Input: temp_depth_limit, |
| 1014 // deco_gas_change[] | |
| 1015 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
| 212 | 1016 // |
| 241 | 1017 // RETURNS TRUE if a stop is needed for gas switch. |
| 1018 // | |
| 1019 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
| 212 | 1020 // |
| 241 | 1021 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
| 1022 // are null), or during the ascent to make sure we are not passing a | |
| 1023 // stop (in which case both can be already set). | |
| 1024 // | |
| 1025 static unsigned char gas_switch_deepest(void) | |
| 201 | 1026 { |
| 241 | 1027 overlay unsigned char switch_deco = 0, switch_last = 0; |
| 201 | 1028 |
| 1029 if (char_I_const_ppO2 == 0) | |
| 1030 { | |
| 225 | 1031 overlay unsigned char j; |
| 1032 | |
| 241 | 1033 // Loop over all enabled gas, to find the deepest one, |
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1034 // above last used gas, but below temp_depth_limit. |
| 338 | 1035 for(j=0; j<NUM_GAS; ++j) |
| 225 | 1036 { |
| 241 | 1037 // Gas not (yet) allowed ? Skip ! |
| 1038 if( temp_depth_limit > deco_gas_change[j] ) | |
| 1039 continue; | |
| 1040 | |
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1041 // Gas deeper (or equal) than the current one ? Skip ! |
| 241 | 1042 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) |
| 1043 continue; | |
| 1044 | |
| 1045 // First, or deeper ? | |
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1046 if( switch_deco < deco_gas_change[j] ) |
| 241 | 1047 { |
| 1048 switch_deco = deco_gas_change[j]; | |
| 388 | 1049 switch_last = j+1; // 1..5 |
| 241 | 1050 } |
| 225 | 1051 } |
| 201 | 1052 } |
| 1053 | |
| 203 | 1054 // If there is a better gas available |
| 241 | 1055 if( switch_deco ) |
| 201 | 1056 { |
| 241 | 1057 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
| 201 | 1058 |
| 241 | 1059 // Should restart gas-switch delay only when gas do changes... |
| 1060 assert( sim_gas_delay <= sim_dive_mins ); | |
| 217 | 1061 |
| 241 | 1062 sim_gas_last_depth = switch_deco; |
| 1063 sim_gas_last_used = switch_last; | |
| 1064 sim_gas_delay = read_custom_function(55); | |
| 217 | 1065 |
| 241 | 1066 // Apply depth correction ONLY if CF#55 is not null: |
| 1067 if( sim_gas_delay > 0 ) | |
| 225 | 1068 { |
| 241 | 1069 sim_gas_delay += sim_dive_mins; |
| 1070 temp_depth_limit = switch_deco; | |
| 1071 return 1; | |
| 225 | 1072 } |
| 241 | 1073 |
| 1074 return 0; | |
| 217 | 1075 } |
| 1076 | |
| 241 | 1077 sim_gas_delay = 0; |
| 1078 return 0; | |
| 217 | 1079 } |
| 1080 | |
| 1081 ////////////////////////////////////////////////////////////////////////////// | |
| 1082 // Calculate gas switches | |
| 1083 // | |
| 1084 // | |
| 1085 // Input: N2_ratio, He_ratio. | |
| 1086 // sim_gas_last_used | |
| 1087 // | |
| 1088 // Output: calc_N2_ratio, calc_He_ratio | |
| 1089 // | |
| 241 | 1090 static void gas_switch_set(void) |
| 217 | 1091 { |
| 338 | 1092 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= NUM_GAS ); |
| 217 | 1093 |
| 388 | 1094 if( sim_gas_last_used == 0 ) // Gas6 = manualy set gas. |
| 224 | 1095 { |
| 1096 calc_N2_ratio = N2_ratio; | |
| 1097 calc_He_ratio = He_ratio; | |
| 1098 } | |
| 1099 else | |
| 1100 { | |
| 1101 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 1102 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 1103 } |
| 201 | 1104 |
| 1105 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 1106 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1107 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1108 } | |
| 1109 | |
| 1110 ////////////////////////////////////////////////////////////////////////////// | |
| 1111 // | |
| 212 | 1112 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 1113 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 276 | 1114 // float_deco_distance : security factor. |
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1115 // Water-vapor pressure inside limbs (ppWater). |
| 212 | 1116 // |
| 236 | 1117 // Output: ppN2, ppHe. |
| 212 | 1118 // |
| 1119 static void sim_alveolar_presures(void) | |
| 201 | 1120 { |
| 212 | 1121 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1122 | |
| 276 | 1123 // Take deco offset into account, but not at surface. |
| 1124 // Note: this should be done on ambiant pressure, hence before | |
| 1125 // computing the diluant partial pressure... | |
| 1126 if( deco_diluent > pres_surface ) | |
| 1127 deco_diluent += float_deco_distance; | |
| 1128 | |
| 212 | 1129 //---- CCR mode : deco gas switch ? -------------------------------------- |
| 276 | 1130 if( char_I_const_ppO2 != 0 ) |
| 201 | 1131 { |
| 276 | 1132 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
| 1133 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
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1134 // ppWater in the equations below: |
| 321 | 1135 deco_diluent -= const_ppO2; |
| 276 | 1136 deco_diluent /= calc_N2_ratio + calc_He_ratio; |
| 212 | 1137 |
| 1138 if (deco_diluent > temp_deco) | |
| 1139 deco_diluent = temp_deco; | |
| 201 | 1140 } |
| 1141 | |
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1142 if( deco_diluent > ppWater ) |
| 201 | 1143 { |
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1144 ppN2 = calc_N2_ratio * (deco_diluent - ppWater); |
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1145 ppHe = calc_He_ratio * (deco_diluent - ppWater); |
| 201 | 1146 } |
| 1147 else | |
| 1148 { | |
| 236 | 1149 ppN2 = 0.0; |
| 201 | 1150 ppHe = 0.0; |
| 1151 } | |
| 236 | 1152 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 1153 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 1154 } | |
| 1155 | |
| 1156 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1157 // clear_tissue |
| 1158 // | |
| 165 | 1159 // optimized in v.101 (var_N2_a) |
| 167 | 1160 // |
| 1161 // preload tissues with standard pressure for the given ambient pressure. | |
| 1162 // Note: fixed N2_ratio for standard air. | |
| 201 | 1163 // |
| 167 | 1164 static void clear_tissue(void) |
| 116 | 1165 { |
| 1166 flag_in_divemode = 0; | |
| 1167 int_O_DBS_bitfield = 0; | |
| 1168 int_O_DBS2_bitfield = 0; | |
| 1169 int_O_DBG_pre_bitfield = 0; | |
| 1170 int_O_DBG_post_bitfield = 0; | |
| 1171 char_O_NDL_at_20mtr = 255; | |
| 1172 | |
| 167 | 1173 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1174 N2_ratio = 0.7902; | |
| 212 | 1175 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1176 |
| 338 | 1177 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 1178 { |
| 197 | 1179 // cycle through the 16 Bühlmann tissues |
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1180 overlay float p = N2_ratio * (pres_respiration - ppWater); |
| 339 | 1181 pres_tissue_N2[ci] = p; |
| 197 | 1182 |
| 1183 // cycle through the 16 Bühlmann tissues for Helium | |
| 339 | 1184 pres_tissue_He[ci] = 0.0; |
| 338 | 1185 } // for 0 to 15 |
| 116 | 1186 |
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1187 clear_deco_table(); |
| 126 | 1188 char_O_deco_status = 0; |
| 1189 char_O_nullzeit = 0; | |
| 168 | 1190 int_O_ascenttime = 0; |
| 126 | 1191 char_O_gradient_factor = 0; |
| 1192 char_O_relative_gradient_GF = 0; | |
| 197 | 1193 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 258 | 1194 |
| 1195 calc_lead_tissue_limit = 0.0; | |
| 1196 char_O_gtissue_no = 0; | |
| 167 | 1197 } |
| 116 | 1198 |
| 167 | 1199 ////////////////////////////////////////////////////////////////////////////// |
| 1200 // calc_hauptroutine | |
| 1201 // | |
| 1202 // this is the major code in dive mode calculates: | |
| 116 | 1203 // the tissues, |
| 167 | 1204 // the bottom time, |
| 1205 // and simulates the ascend with all deco stops. | |
| 171 | 1206 // |
| 1207 // The deco_state sequence is : | |
| 1208 // 3 (at surface) | |
| 1209 // +---> 0 : calc nullzeit | |
| 1210 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1211 // | +-> 1 : simulate up to 16min of stops. | |
| 1212 // | +------< not finished | |
| 1213 // +--------< finish | |
| 1214 // | |
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1215 // Added steps 6,5 for @+5 calculation: |
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1216 // 6 = ascent to first stop (same as 2), except continue to 7 |
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1217 // 7 = same as 1, except loop to 7. |
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1218 // |
| 167 | 1219 static void calc_hauptroutine(void) |
| 116 | 1220 { |
| 241 | 1221 static unsigned char backup_gas_used = 0; |
| 1222 static unsigned char backup_gas_depth = 0; | |
| 217 | 1223 static unsigned char backup_gas_delay = 0; |
| 186 | 1224 |
| 116 | 1225 calc_hauptroutine_data_input(); |
| 1226 | |
| 1227 if(!flag_in_divemode) | |
| 1228 { | |
| 1229 flag_in_divemode = 1; | |
| 1230 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1231 } | |
| 1232 else | |
| 1233 check_pre_dbg(); | |
| 1234 | |
| 1235 calc_hauptroutine_update_tissues(); | |
| 1236 calc_gradient_factor(); | |
| 1237 | |
| 167 | 1238 // toggle between calculation for nullzeit (bottom time), |
| 1239 // deco stops | |
| 1240 // and more deco stops (continue) | |
| 1241 switch( char_O_deco_status ) | |
| 116 | 1242 { |
| 186 | 1243 case 3: //---- At surface: start a new dive ------------------------------ |
| 1244 clear_deco_table(); | |
| 1245 copy_deco_table(); | |
| 200 | 1246 int_O_ascenttime = 0; // Reset DTR. |
| 323 | 1247 int_O_extra_ascenttime = 0; |
| 200 | 1248 char_O_nullzeit = 0; // Reset bottom time. |
| 278 | 1249 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
| 201 | 1250 |
| 217 | 1251 // Values that should be reset just once for the full real dive. |
| 1252 // This is used to record the lowest stop for the whole dive, | |
| 1253 // Including ACCROSS all simulated ascent. | |
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1254 low_depth = 0.0; |
| 217 | 1255 |
| 1256 // Reset gas switch history. | |
| 241 | 1257 backup_gas_used = sim_gas_last_used = 0; |
| 1258 backup_gas_depth = sim_gas_last_depth = 0; | |
| 217 | 1259 backup_gas_delay = sim_gas_delay = 0; |
| 203 | 1260 sim_dive_mins = 0; |
| 1261 break; | |
| 186 | 1262 |
| 167 | 1263 case 0: //---- bottom time ----------------------------------------------- |
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1264 default: |
| 167 | 1265 calc_nullzeit(); |
| 1266 check_ndl(); | |
| 186 | 1267 char_O_deco_status = 2; // calc ascent next time. |
| 1268 break; | |
| 1269 | |
| 1270 case 2: //---- Simulate ascent to first stop ----------------------------- | |
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1271 case 6: // @+5min variation |
| 203 | 1272 // Check proposed gas at begin of ascent simulation |
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1273 sim_dive_mins = int_I_divemins; // Init current time. |
| 241 | 1274 |
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1275 gas_switch_find_current(); // Lookup for current gas & time. |
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1276 gas_switch_set(); // setup calc_ratio's |
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1277 |
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1278 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1279 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
| 203 | 1280 backup_gas_delay = sim_gas_delay; |
| 186 | 1281 |
| 1282 sim_ascent_to_first_stop(); | |
| 201 | 1283 |
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1284 // Calc stops next time (deco or gas switch). |
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1285 char_O_deco_status = 1 | ( char_O_deco_status & 4 ); |
| 167 | 1286 break; |
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1287 |
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1288 case 1: //---- Simulate stops -------------------------------------------- |
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1289 case 5: // @+5 variation. |
| 167 | 1290 calc_hauptroutine_calc_deco(); |
| 186 | 1291 |
| 1292 // If simulation is finished, restore the GF low reference, so that | |
| 1293 // next ascent simulation is done from the current depth: | |
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1294 if( (char_O_deco_status & 3) == 0 ) |
| 186 | 1295 { |
| 241 | 1296 sim_gas_last_used = backup_gas_used; |
| 1297 sim_gas_last_depth = backup_gas_depth; | |
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1298 sim_gas_delay = backup_gas_delay; |
| 186 | 1299 } |
| 167 | 1300 break; |
| 116 | 1301 } |
| 167 | 1302 |
| 116 | 1303 check_post_dbg(); |
| 1304 } | |
| 1305 | |
| 167 | 1306 ////////////////////////////////////////////////////////////////////////////// |
| 1307 // calc_hauptroutine_data_input | |
| 1308 // | |
| 1309 // Reset all C-code dive parameters from their ASM-code values. | |
| 1310 // Detect gas change condition. | |
| 1311 // | |
| 116 | 1312 void calc_hauptroutine_data_input(void) |
| 1313 { | |
| 203 | 1314 overlay short int_temp; |
| 126 | 1315 |
| 197 | 1316 pres_respiration = int_I_pres_respiration * 0.001; |
| 1317 pres_surface = int_I_pres_surface * 0.001; | |
| 1318 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1319 He_ratio = char_I_He_ratio * 0.01; | |
| 1320 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1321 |
| 126 | 1322 // ____________________________________________________ |
| 1323 // | |
| 1324 // _____________ G A S _ C H A N G E S ________________ | |
| 1325 // ____________________________________________________ | |
| 1326 | |
| 212 | 1327 // Keep a margin of 150mbar = 1.50m |
| 1328 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1329 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1330 |
| 225 | 1331 deco_gas_change[0] = 0; |
| 1332 deco_gas_change[1] = 0; | |
| 1333 deco_gas_change[2] = 0; | |
| 1334 deco_gas_change[3] = 0; | |
| 1335 deco_gas_change[4] = 0; | |
| 116 | 1336 |
| 203 | 1337 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1338 if(char_I_deco_gas_change[0]) |
| 126 | 1339 { |
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1340 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1341 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1342 } |
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1343 if(char_I_deco_gas_change[1]) |
| 126 | 1344 { |
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1345 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1346 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1347 } |
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1348 if(char_I_deco_gas_change[2]) |
| 126 | 1349 { |
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1350 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1351 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1352 } |
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1353 if(char_I_deco_gas_change[3]) |
| 126 | 1354 { |
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1355 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1356 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1357 } |
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1358 if(char_I_deco_gas_change[4]) |
| 126 | 1359 { |
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1360 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1361 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1362 } |
| 116 | 1363 |
| 197 | 1364 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1365 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1366 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1367 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1368 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1369 GF_delta = GF_high - GF_low; |
| 116 | 1370 } |
| 1371 | |
| 167 | 1372 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1373 // |
| 1374 // | |
| 116 | 1375 void calc_hauptroutine_update_tissues(void) |
| 1376 { | |
| 197 | 1377 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1378 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1379 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1380 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1381 |
| 276 | 1382 pres_diluent = pres_respiration; |
| 307 | 1383 if( char_I_const_ppO2 != 0 ) // new in v.101 |
| 186 | 1384 { |
| 322 | 1385 overlay float flush_ppO2 = pres_respiration * (1.0 - N2_ratio - He_ratio); |
| 1386 | |
| 276 | 1387 pres_diluent -= const_ppO2; // new in v.101 |
| 1388 pres_diluent /= N2_ratio + He_ratio; // new in v.101 | |
| 321 | 1389 if( pres_diluent < 0.0 ) |
| 1390 pres_diluent = 0.0; | |
| 276 | 1391 if( pres_diluent > pres_respiration ) // new in v.101 |
| 1392 pres_diluent = pres_respiration; // new in v.101 | |
| 307 | 1393 |
| 321 | 1394 char_O_diluent = (unsigned char)(pres_diluent/pres_respiration*100.0 + 0.5); |
| 322 | 1395 |
| 326 | 1396 if( flush_ppO2 > 2.545) flush_ppO2 = 2.55; |
| 322 | 1397 if( flush_ppO2 < 0.0 ) flush_ppO2 = 0.0; |
| 1398 char_O_flush_ppO2 = (unsigned char)(flush_ppO2*100.0 + 0.5); | |
| 186 | 1399 } |
| 307 | 1400 |
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1401 if( pres_diluent > ppWater ) // new in v.101 |
| 116 | 1402 { |
| 307 | 1403 overlay float EAD, END; |
| 1404 | |
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1405 ppN2 = N2_ratio * (pres_diluent - ppWater); // changed in v.101 |
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1406 ppHe = He_ratio * (pres_diluent - ppWater); // changed in v.101 |
| 307 | 1407 |
| 1408 // EAD : Equivalent Air Dive. Equivalent depth for the same N2 level | |
| 1409 // with plain air. | |
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1410 // ppN2 = 79% * (P_EAD - ppWater) |
| 307 | 1411 // EAD = (P_EAD - Psurface) * 10 |
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1412 // ie: EAD = (ppN2 / 0.7902 + ppWater -Psurface) * 10 |
| 317 | 1413 EAD = (ppN2 / 0.7902 + ppWater - pres_surface) * BAR_TO_METER; |
| 307 | 1414 if( EAD < 0.0 || EAD > 245.5 ) EAD = 0.0; |
| 317 | 1415 char_O_EAD = (unsigned char)(EAD + 0.5); |
| 307 | 1416 |
| 1417 // END : Equivalent Narcotic Dive. | |
| 1418 // Here we count O2 as narcotic too. Hence everything but helium (has a narcosis factor of | |
| 1419 // 0.23 btw). Hence the formula becomes: | |
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1420 // END * BarPerMeter * (1.0 - 0.0) - ppWater + Psurface == Pambient - ppHe - ppWater |
| 317 | 1421 // ie: END = (Pambient - ppHe - Psurface) * BAR_TO_METER |
| 307 | 1422 // |
| 1423 // Source cited: | |
| 1424 // The Physiology and Medicine of Diving by Peter Bennett and David Elliott, | |
| 1425 // 4th edition, 1993, W.B.Saunders Company Ltd, London. | |
| 317 | 1426 END = (pres_respiration - ppHe - pres_surface) * BAR_TO_METER; |
| 307 | 1427 if( END < 0.0 || END > 245.5 ) END = 0.0; |
| 317 | 1428 char_O_END = (unsigned char)(END + 0.5); |
| 116 | 1429 } |
| 167 | 1430 else // new in v.101 |
| 116 | 1431 { |
| 236 | 1432 ppN2 = 0.0; // new in v.101 |
| 200 | 1433 ppHe = 0.0; // new in v.101 |
| 307 | 1434 char_O_EAD = char_O_END = 0; |
| 116 | 1435 } |
| 1436 | |
| 1437 if(!char_I_step_is_1min) | |
| 192 | 1438 calc_tissue(0); |
| 116 | 1439 else |
| 192 | 1440 calc_tissue(1); |
| 186 | 1441 |
| 192 | 1442 // Calc limit for surface, ie. GF_high. |
| 258 | 1443 calc_limit(); |
| 186 | 1444 |
| 203 | 1445 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 339 | 1446 int_O_gtissue_press = (short)((pres_tissue_N2[char_O_gtissue_no] + pres_tissue_He[char_O_gtissue_no]) * 1000); |
| 192 | 1447 |
| 1448 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1449 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1450 { |
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1451 char_O_nullzeit = 0; // deco necessary |
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1452 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1453 } |
| 171 | 1454 } |
| 1455 | |
| 116 | 1456 |
| 167 | 1457 ////////////////////////////////////////////////////////////////////////////// |
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1458 // Compute stops. |
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1459 // |
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1460 // Note: because this can be very long, break on 16 iterations, and set state |
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1461 // to 0 when finished, or to 1 when needing to continue. |
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1462 // Note: because each iteration might be very long too (~ 66 ms in 1.84beta), |
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1463 // break the loop when total time > 512msec. |
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1464 // |
| 116 | 1465 void calc_hauptroutine_calc_deco(void) |
| 1466 { | |
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1467 overlay unsigned char loop; |
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1468 |
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1469 for(loop = 0; loop < 16; ++loop) |
| 116 | 1470 { |
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1471 // Limit loops to 512ms, using the RTC timer 3: |
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1472 if( tmr3() & (512*32) ) |
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1473 break; |
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1474 |
| 241 | 1475 // Do not ascent while doing a gas switch ? |
| 203 | 1476 if( sim_gas_delay <= sim_dive_mins ) |
| 1477 { | |
| 241 | 1478 if( calc_nextdecodepth() ) |
| 1479 { | |
| 1480 if( temp_depth_limit == 0 ) | |
| 1481 goto Surface; | |
| 116 | 1482 |
| 241 | 1483 //---- We hit a stop at temp_depth_limit --------------------- |
| 317 | 1484 temp_deco = temp_depth_limit * METER_TO_BAR // Convert to relative bar, |
| 241 | 1485 + pres_surface; // To absolute. |
| 471 | 1486 if( !update_deco_table() ) // Adds a one minute stops. |
| 1487 goto Surface; // Deco table full: abort... | |
| 241 | 1488 } |
| 1489 else | |
| 1490 { | |
| 1491 //---- No stop ----------------------------------------------- | |
| 317 | 1492 temp_deco -= (10*METER_TO_BAR); // Ascend 10m, no wait. |
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1493 |
| 241 | 1494 //---- Finish computations once surface is reached ----------- |
| 1495 if( temp_deco <= pres_surface ) | |
| 1496 { | |
| 1497 Surface: | |
| 471 | 1498 if( char_O_deco_status == 1 ) // Don't in @+5min variant. |
|
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1499 copy_deco_table(); |
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1500 |
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1501 calc_ascenttime(); |
| 471 | 1502 char_O_deco_status = 0; // calc nullzeit next time. |
| 1503 char_O_deco_last_stop = 0; // Surface reached (to animate menu) | |
| 241 | 1504 return; |
| 1505 } | |
| 1506 } | |
| 212 | 1507 } |
| 1508 else | |
|
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1509 { |
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1510 // Note: if loop==0, temp_depth_limit might not be already set here. |
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1511 temp_depth_limit = (int)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
| 471 | 1512 if( !update_deco_table() ) // Just pass one minute. |
| 1513 goto Surface; // Deco table full: abort... | |
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1514 } |
| 197 | 1515 |
| 241 | 1516 //---- Then update tissue -------------------------------------------- |
| 203 | 1517 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1518 gas_switch_set(); // Apply any simulated gas change, once validated. |
| 212 | 1519 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1520 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1521 } |
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1522 |
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1523 // Surface not reached, need more stops... |
| 278 | 1524 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
| 116 | 1525 } |
| 1526 | |
| 167 | 1527 ////////////////////////////////////////////////////////////////////////////// |
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1528 // Simulation ascention to first deco stop. |
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1529 // |
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1530 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1531 // there is no need to break on more that 16 iterations |
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1532 // (or we are already in deep shit). |
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1533 // |
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1534 // Input: pres_respiration |
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1535 // Output: temp_deco |
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1536 // |
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1537 // if char_O_deco_status indicate @+5 variant, add extra time at current depth, |
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1538 // before ascent. |
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1539 void sim_ascent_to_first_stop(void) |
| 116 | 1540 { |
| 171 | 1541 update_startvalues(); |
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1542 clear_deco_table(); |
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1543 |
| 200 | 1544 temp_deco = pres_respiration; // Starts from current real depth. |
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1545 |
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1546 // Are we doing the special @+5min variation ? |
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1547 if(char_O_deco_status & 4) |
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1548 sim_extra_time(); |
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1549 |
| 212 | 1550 // Do we have a gas switch going on ? |
| 1551 if( sim_gas_delay > sim_dive_mins ) | |
| 1552 return; | |
| 1553 | |
| 241 | 1554 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1555 for(;;) |
| 116 | 1556 { |
| 461 | 1557 overlay float old_deco = temp_deco; // Pamb backup (bars) |
| 460 | 1558 |
| 241 | 1559 // Try ascending 1 full minute. |
| 461 | 1560 temp_deco -= 10*METER_TO_BAR; // 1 min, at 10m/min. ~ 1bar. |
| 1561 if( temp_deco < pres_surface ) // But don't go over surface. | |
| 1562 temp_deco = pres_surface; | |
| 203 | 1563 |
| 461 | 1564 // Recompute sim_lead_tissue_limit at GF_low (deepest stop), because |
| 1565 // one minute passed. | |
| 212 | 1566 sim_limit(GF_low); |
| 1567 | |
| 1568 // Did we reach deepest remaining stop ? | |
| 241 | 1569 if( temp_deco < sim_lead_tissue_limit ) |
| 212 | 1570 { |
| 461 | 1571 temp_deco = old_deco; // Restore last correct depth, |
| 1572 break; // Do no spend a minute more. | |
| 212 | 1573 } |
| 1574 | |
| 203 | 1575 // Did we reach surface ? |
| 460 | 1576 // NOTE: we should round BEFORE checking surface is reached. |
| 461 | 1577 temp_depth_limit = (unsigned char)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
| 1578 if( temp_depth_limit == 0 ) | |
| 203 | 1579 { |
| 1580 temp_deco = pres_surface; // Yes: finished ! | |
| 1581 break; | |
| 1582 } | |
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1583 |
| 241 | 1584 // Check for gas change below new depth ? |
| 1585 if( gas_switch_deepest() ) | |
| 1586 { | |
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1587 assert( temp_depth_limit > 0); |
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1588 |
| 317 | 1589 temp_deco = temp_depth_limit * METER_TO_BAR + pres_surface; |
| 212 | 1590 break; |
| 241 | 1591 } |
| 171 | 1592 |
| 203 | 1593 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1594 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
| 203 | 1595 sim_tissue(1); // and update tissues for 1 min. |
| 1596 } | |
| 167 | 1597 } |
| 116 | 1598 |
| 167 | 1599 ////////////////////////////////////////////////////////////////////////////// |
|
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1600 // Simulation extra time at the current depth. |
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1601 // |
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1602 // This routine is used for @+5min feature. |
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1603 void sim_extra_time(void) |
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1604 { |
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1605 overlay unsigned char extra = read_custom_function(58); |
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1606 do { |
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1607 sim_dive_mins++; // Advance simulated time by 1 minute. |
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1608 sim_tissue(1); // and update tissues for 1 min. |
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1609 } while( --extra != 0 ); |
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1610 } |
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1611 |
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1612 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 1613 // calc_tissue |
| 1614 // | |
| 116 | 1615 // optimized in v.101 |
| 167 | 1616 // |
| 184 | 1617 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1618 { |
| 251 | 1619 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1620 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1621 |
| 338 | 1622 for (ci=0;ci<NUM_COMP;ci++) |
| 126 | 1623 { |
| 258 | 1624 read_buhlmann_times(period); // 2 sec or 1 min period. |
| 116 | 1625 |
| 126 | 1626 // N2 |
| 339 | 1627 temp_tissue = (ppN2 - pres_tissue_N2[ci]) * var_N2_e; |
| 126 | 1628 temp_tissue_safety(); |
| 339 | 1629 pres_tissue_N2[ci] += temp_tissue; |
| 165 | 1630 |
| 126 | 1631 // He |
| 339 | 1632 temp_tissue = (ppHe - pres_tissue_He[ci]) * var_He_e; |
| 126 | 1633 temp_tissue_safety(); |
| 339 | 1634 pres_tissue_He[ci] += temp_tissue; |
| 192 | 1635 } |
| 167 | 1636 } |
| 116 | 1637 |
| 167 | 1638 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1639 // calc_limit |
| 167 | 1640 // |
| 192 | 1641 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1642 // |
| 258 | 1643 static void calc_limit(void) |
| 167 | 1644 { |
| 192 | 1645 char_O_gtissue_no = 255; |
| 1646 calc_lead_tissue_limit = 0.0; | |
| 1647 | |
| 338 | 1648 for(ci=0; ci<NUM_COMP;ci++) |
| 192 | 1649 { |
| 339 | 1650 overlay float N2 = pres_tissue_N2[ci]; |
| 1651 overlay float He = pres_tissue_He[ci]; | |
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1652 overlay float p = N2 + He; |
| 192 | 1653 |
| 258 | 1654 read_buhlmann_coefficients(); |
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1655 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1656 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
| 116 | 1657 |
| 192 | 1658 // Apply the Eric Baker's varying gradient factor correction. |
| 1659 // Note: the correction factor depends both on GF and b, | |
| 1660 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1661 // so that can change who is the leading gas... | |
| 1662 // Note: Also depends of the GF. So the calcul is different for | |
| 1663 // GF_low, current GF, or GF_high... | |
| 1664 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1665 // hence what would happend at surface, | |
| 1666 // hence at GF_high. | |
| 1667 if( char_I_deco_model == 1 ) | |
| 258 | 1668 p = ( p - var_N2_a * GF_high) * var_N2_b |
| 1669 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
| 192 | 1670 else |
| 1671 p = (p - var_N2_a) * var_N2_b; | |
| 258 | 1672 if( p < 0.0 ) p = 0.0; |
| 192 | 1673 |
| 1674 if( p > calc_lead_tissue_limit ) | |
| 1675 { | |
| 1676 char_O_gtissue_no = ci; | |
| 1677 calc_lead_tissue_limit = p; | |
| 1678 } | |
| 1679 } | |
| 197 | 1680 |
| 338 | 1681 assert( char_O_gtissue_no < NUM_COMP ); |
| 197 | 1682 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); |
| 167 | 1683 } |
| 1684 | |
| 1685 ////////////////////////////////////////////////////////////////////////////// | |
| 1686 // calc_nullzeit | |
| 1687 // | |
| 1688 // calculates the remaining bottom time | |
| 1689 // | |
| 1690 // unchanged in v.101 | |
| 1691 // | |
| 1692 static void calc_nullzeit(void) | |
| 1693 { | |
| 203 | 1694 overlay unsigned char loop; |
| 200 | 1695 update_startvalues(); |
| 167 | 1696 |
| 116 | 1697 char_O_nullzeit = 0; |
| 167 | 1698 for(loop = 1; loop <= 17; loop++) |
| 116 | 1699 { |
| 1700 backup_sim_pres_tissue(); | |
| 197 | 1701 sim_tissue(2); // 10 min. |
| 192 | 1702 sim_limit(GF_high); |
| 167 | 1703 |
| 192 | 1704 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1705 { |
| 1706 restore_sim_pres_tissue(); | |
| 1707 break; | |
| 1708 } | |
| 1709 // Validate once we know its good. | |
| 1710 char_O_nullzeit += 10; | |
| 167 | 1711 } |
| 1712 | |
| 116 | 1713 if (char_O_nullzeit < 60) |
| 1714 { | |
| 167 | 1715 for(loop=1; loop <= 10; loop++) |
| 116 | 1716 { |
| 197 | 1717 sim_tissue(1); // 1 min |
| 192 | 1718 sim_limit(GF_high); |
| 1719 | |
| 1720 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1721 break; |
| 1722 char_O_nullzeit++; | |
| 167 | 1723 } |
| 185 | 1724 } |
| 1725 } | |
| 116 | 1726 |
| 167 | 1727 ////////////////////////////////////////////////////////////////////////////// |
| 1728 // backup_sim_pres_tissue | |
| 1729 // | |
| 116 | 1730 void backup_sim_pres_tissue(void) |
| 1731 { | |
| 167 | 1732 overlay unsigned char x; |
| 1733 | |
| 339 | 1734 for(x=0; x<NUM_COMP; x++) |
| 1735 { | |
| 1736 sim_pres_tissue_backup_N2[x] = sim_pres_tissue_N2[x]; | |
| 1737 sim_pres_tissue_backup_He[x] = sim_pres_tissue_He[x]; | |
| 1738 } | |
| 167 | 1739 } |
| 116 | 1740 |
| 167 | 1741 ////////////////////////////////////////////////////////////////////////////// |
| 1742 // restore_sim_pres_tissue | |
| 1743 // | |
| 116 | 1744 void restore_sim_pres_tissue(void) |
| 1745 { | |
| 167 | 1746 overlay unsigned char x; |
| 1747 | |
| 339 | 1748 for(x=0; x<NUM_COMP; x++) |
| 1749 { | |
| 1750 sim_pres_tissue_N2[x] = sim_pres_tissue_backup_N2[x]; | |
| 1751 sim_pres_tissue_He[x] = sim_pres_tissue_backup_He[x]; | |
| 1752 } | |
| 167 | 1753 } |
| 116 | 1754 |
| 167 | 1755 ////////////////////////////////////////////////////////////////////////////// |
| 1756 // calc_ascenttime | |
| 1757 // | |
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1758 // Summup ascent from bottom to surface, at 1 bar/min, 1min for last 3 meters, |
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1759 // and all stops. |
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1760 // |
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1761 // Result in int_O_ascenttime, or int_O_extra_ascenttime if in @+5min variant. |
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1762 static void calc_ascenttime(void) |
| 116 | 1763 { |
| 323 | 1764 overlay unsigned char x; |
| 1765 overlay unsigned short sum; | |
| 168 | 1766 |
| 323 | 1767 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
| 1768 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
| 1769 if (ascent < 0.0) | |
| 1770 ascent = 0.0; | |
| 1771 sum = (unsigned short)(ascent + 0.99); | |
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1772 |
| 338 | 1773 for(x=0; x<NUM_STOPS && internal_deco_depth[x]; x++) |
| 323 | 1774 sum += (unsigned short)internal_deco_time[x]; |
| 1775 | |
| 1776 if( char_O_deco_status == 1 ) | |
| 1777 int_O_ascenttime = sum; | |
| 126 | 1778 else |
| 323 | 1779 int_O_extra_ascenttime = sum; |
| 167 | 1780 } |
| 116 | 1781 |
| 167 | 1782 ////////////////////////////////////////////////////////////////////////////// |
| 1783 // update_startvalues | |
| 1784 // | |
| 116 | 1785 // updated in v.102 |
| 167 | 1786 // |
| 116 | 1787 void update_startvalues(void) |
| 1788 { | |
| 167 | 1789 overlay unsigned char x; |
| 116 | 1790 |
| 201 | 1791 // Start ascent simulation with current tissue partial pressures. |
| 339 | 1792 for(x=0; x<NUM_COMP; x++) |
| 116 | 1793 { |
| 339 | 1794 sim_pres_tissue_N2[x] = pres_tissue_N2[x]; |
| 1795 sim_pres_tissue_He[x] = pres_tissue_He[x]; | |
| 116 | 1796 } |
| 197 | 1797 |
| 201 | 1798 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1799 sim_lead_tissue_limit = 0.0; |
| 1800 sim_lead_tissue_no = 255; | |
| 167 | 1801 } |
| 116 | 1802 |
| 167 | 1803 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1804 // sim_tissue |
| 167 | 1805 // |
| 116 | 1806 // optimized in v.101 |
| 167 | 1807 // |
| 1808 // Function very simular to calc_tissue, but: | |
| 1809 // + Use a 1min or 10min period. | |
| 1810 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1811 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1812 { |
| 251 | 1813 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1814 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1815 |
| 338 | 1816 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 1817 { |
| 258 | 1818 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
| 165 | 1819 |
| 126 | 1820 // N2 |
| 339 | 1821 temp_tissue = (ppN2 - sim_pres_tissue_N2[ci]) * var_N2_e; |
| 126 | 1822 temp_tissue_safety(); |
| 339 | 1823 sim_pres_tissue_N2[ci] += temp_tissue; |
| 126 | 1824 |
| 1825 // He | |
| 339 | 1826 temp_tissue = (ppHe - sim_pres_tissue_He[ci]) * var_He_e; |
| 126 | 1827 temp_tissue_safety(); |
| 339 | 1828 sim_pres_tissue_He[ci] += temp_tissue; |
| 192 | 1829 } |
| 167 | 1830 } |
| 116 | 1831 |
| 167 | 1832 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1833 // sim_limit() |
| 1834 // | |
| 1835 // New in v.111 | |
| 1836 // | |
| 1837 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1838 // different depth, because it depends on current gradient factor. | |
| 167 | 1839 // |
| 192 | 1840 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1841 { |
| 212 | 1842 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1843 | |
| 192 | 1844 sim_lead_tissue_limit = 0.0; |
| 212 | 1845 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1846 |
| 338 | 1847 for(ci=0; ci<NUM_COMP; ci++) |
| 192 | 1848 { |
| 339 | 1849 overlay float N2 = sim_pres_tissue_N2[ci]; |
| 1850 overlay float He = sim_pres_tissue_He[ci]; | |
| 241 | 1851 overlay float p = N2 + He; |
| 192 | 1852 |
| 258 | 1853 read_buhlmann_coefficients(); |
| 241 | 1854 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
| 1855 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 192 | 1856 |
| 1857 // Apply the Eric Baker's varying gradient factor correction. | |
| 1858 // Note: the correction factor depends both on GF and b, | |
| 1859 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1860 // so that can change who is the leading gas... | |
| 1861 // Note: Also depends of the GF_current... | |
| 1862 if( char_I_deco_model == 1 ) | |
| 302 | 1863 p = ( p - var_N2_a * GF_current) |
| 1864 / (GF_current / var_N2_b + 1.0 - GF_current); | |
| 192 | 1865 else |
| 1866 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1867 if( p < 0.0 ) p = 0.0; |
| 192 | 1868 |
| 1869 if( p > sim_lead_tissue_limit ) | |
| 1870 { | |
| 1871 sim_lead_tissue_no = ci; | |
| 1872 sim_lead_tissue_limit = p; | |
| 1873 } | |
| 1874 } // for ci | |
| 197 | 1875 |
| 338 | 1876 assert( sim_lead_tissue_no < NUM_COMP ); |
| 237 | 1877 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1878 } |
| 116 | 1879 |
| 167 | 1880 ////////////////////////////////////////////////////////////////////////////// |
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1881 // clear_deco_table |
| 167 | 1882 // |
| 1883 // unchanged in v.101 | |
| 1884 // | |
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1885 static void clear_deco_table(void) |
| 116 | 1886 { |
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1887 overlay unsigned char x; |
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1888 |
| 338 | 1889 for(x=0; x<NUM_STOPS; ++x) |
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1890 { |
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1891 internal_deco_time [x] = 0; |
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1892 internal_deco_depth[x] = 0; |
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1893 } |
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1894 } |
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1895 |
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1896 ////////////////////////////////////////////////////////////////////////////// |
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1897 // update_deco_table |
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1898 // |
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1899 // Add 1 min to current stop. |
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1900 // |
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1901 // Inputs: |
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1902 // temp_depth_limit = stop's depth, in meters. |
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1903 // In/Out: |
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1904 // internal_deco_depth[] : depth (in metres) of each stops. |
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1905 // internal_deco_time [] : time (in minutes) of each stops. |
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1906 // |
| 471 | 1907 static unsigned char update_deco_table() |
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1908 { |
| 192 | 1909 overlay unsigned char x; |
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1910 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1911 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1912 |
| 338 | 1913 for(x=0; x<NUM_STOPS; ++x) |
| 192 | 1914 { |
| 212 | 1915 // Make sure deco-stops are recorded in order: |
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1916 assert( !internal_deco_depth[x] || temp_depth_limit <= (internal_deco_depth[x]& 0x7F) ); |
| 212 | 1917 |
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1918 if( (internal_deco_depth[x] & 0x7F) == temp_depth_limit ) |
| 192 | 1919 { |
| 1920 // Do not overflow (max 255') | |
| 1921 if( internal_deco_time[x] < 255 ) | |
| 1922 { | |
| 1923 internal_deco_time[x]++; | |
| 471 | 1924 return 1; |
| 192 | 1925 } |
| 1926 // But store extra in the next stop... | |
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1927 } |
| 192 | 1928 |
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1929 if( internal_deco_depth[x] == 0 ) |
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1930 { |
| 192 | 1931 internal_deco_depth[x] = temp_depth_limit; |
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1932 if( sim_gas_delay > sim_dive_mins ) |
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1933 internal_deco_depth[x] |= 0x80; |
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1934 |
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1935 internal_deco_time[x] = 1; |
| 471 | 1936 return 1; |
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1937 } |
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1938 } |
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1939 |
| 192 | 1940 // Can't store stops at more than 96m. |
| 1941 // Or stops at less that 3m too. | |
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1942 // Just do nothing with that... |
| 471 | 1943 return 0; |
| 167 | 1944 } |
| 116 | 1945 |
| 167 | 1946 ////////////////////////////////////////////////////////////////////////////// |
| 1947 // calc_gradient_factor | |
| 1948 // | |
| 165 | 1949 // optimized in v.101 (var_N2_a) |
| 116 | 1950 // new code in v.102 |
| 167 | 1951 // |
| 1952 static void calc_gradient_factor(void) | |
| 116 | 1953 { |
| 197 | 1954 overlay float gf; |
| 339 | 1955 overlay float N2 = pres_tissue_N2[char_O_gtissue_no]; |
| 1956 overlay float He = pres_tissue_He[char_O_gtissue_no]; | |
| 237 | 1957 |
| 338 | 1958 assert( char_O_gtissue_no < NUM_COMP ); |
| 237 | 1959 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1960 |
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1961 // tissue > respiration (currently off-gasing) |
| 302 | 1962 // GF = 0% when respiration == tissue, ie. bubbles are at equilibrium. |
| 1963 // GF = 100% when respiration == limit. | |
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1964 temp_tissue = N2 + He; |
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1965 if( temp_tissue <= pres_respiration ) |
| 197 | 1966 gf = 0.0; |
| 1967 else | |
| 1968 { | |
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1969 overlay float limit = calc_lead_tissue_limit; |
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1970 // NOTE: in GF model, calc_lead_tissue_limit include already the |
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1971 // correction due to gradient factor. To compute the actual |
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1972 // current GF, we need to (re-)compute the raw ambiant-pressure |
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1973 // limit from the Bühlmann model. |
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1974 if( char_I_deco_model == 1 ) |
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1975 { |
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1976 ci = char_O_gtissue_no; |
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1977 read_buhlmann_coefficients(); |
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1978 var_N2_a = (var_N2_a * N2 + var_He_a * He) / temp_tissue; |
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1979 var_N2_b = (var_N2_b * N2 + var_He_b * He) / temp_tissue; |
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1980 limit = (temp_tissue - var_N2_a) * var_N2_b; |
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1981 } |
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1982 |
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1983 gf = (temp_tissue - pres_respiration) |
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1984 / (temp_tissue - limit) |
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1985 * 100.0; |
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1986 if( gf > 254.5 ) gf = 255.0; |
| 197 | 1987 if( gf < 0.0 ) gf = 0.0; |
| 1988 } | |
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1989 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
| 116 | 1990 |
| 1991 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1992 { | |
| 197 | 1993 overlay float rgf; |
| 1994 | |
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1995 if( low_depth < 1.5 ) |
| 197 | 1996 rgf = GF_high; |
| 1997 else | |
| 1998 { | |
| 317 | 1999 overlay float temp1 = low_depth * METER_TO_BAR; |
| 197 | 2000 overlay float temp2 = pres_respiration - pres_surface; |
| 186 | 2001 |
| 197 | 2002 if (temp2 <= 0) |
| 2003 rgf = GF_high; | |
| 2004 else if (temp2 >= temp1) | |
| 2005 rgf = GF_low; | |
| 2006 else | |
| 2007 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 2008 } | |
| 186 | 2009 |
| 197 | 2010 rgf = gf / rgf; // gf is already in percent |
| 2011 if( rgf < 0.0 ) rgf = 0.0; | |
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2012 if( rgf > 254.5 ) rgf = 255.0; |
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2013 char_O_relative_gradient_GF = (unsigned char)(rgf+0.5f); |
| 116 | 2014 } // calc relative gradient factor |
| 2015 else | |
| 2016 { | |
| 186 | 2017 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 2018 } |
| 167 | 2019 } |
| 116 | 2020 |
| 167 | 2021 ////////////////////////////////////////////////////////////////////////////// |
| 2022 // deco_calc_desaturation_time | |
| 2023 // | |
| 116 | 2024 // FIXED N2_ratio |
| 2025 // unchanged in v.101 | |
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2026 // Inputs: int_I_pres_surface, ppWater, char_I_desaturation_multiplier |
| 233 | 2027 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] |
| 167 | 2028 // |
| 116 | 2029 void deco_calc_desaturation_time(void) |
| 2030 { | |
| 338 | 2031 overlay rom const float *ptr; |
| 2032 | |
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2033 RESET_C_STACK |
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2034 |
| 233 | 2035 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2036 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2037 | |
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2038 #ifndef CROSS_COMPILE |
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2039 // Note: we don't use far rom pointer, because the |
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2040 // 24 bits is to complex, hence we have to set |
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2041 // the UPPER page ourself... |
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2042 // --> Set zero if tables are moved to lower pages ! |
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2043 _asm |
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2044 movlw 1 |
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2045 movwf TBLPTRU,0 |
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2046 _endasm |
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2047 #endif |
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2048 |
| 237 | 2049 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 2050 pres_surface = int_I_pres_surface * 0.001; |
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2051 ppN2 = N2_ratio * (pres_surface - ppWater); |
| 126 | 2052 int_O_desaturation_time = 0; |
| 2053 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 233 | 2054 |
| 338 | 2055 ptr = &buhlmann_ht[0]; |
| 339 | 2056 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 2057 { |
| 338 | 2058 overlay float var_N2_halftime = *ptr++; |
| 2059 overlay float var_He_halftime = *ptr++; | |
| 251 | 2060 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 2061 overlay float temp1; | |
| 2062 overlay float temp2; | |
| 2063 overlay float temp3; | |
| 2064 overlay float temp4; | |
| 338 | 2065 |
| 2066 assert( 4.0 <= var_N2_halftime && var_N2_halftime <= 635.0 ); | |
| 2067 assert( 1.5099 <= var_He_halftime && var_He_halftime <= 240.03 ); | |
| 2068 | |
| 126 | 2069 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 2070 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 2071 // 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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2072 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
| 126 | 2073 // N2 |
| 339 | 2074 temp1 = 1.05 * ppN2 - pres_tissue_N2[ci]; |
| 2075 temp2 = ppN2 - pres_tissue_N2[ci]; | |
| 126 | 2076 if (temp2 >= 0.0) |
| 2077 { | |
| 233 | 2078 temp1 = 0.0; |
| 2079 temp2 = 0.0; | |
| 126 | 2080 } |
| 2081 else | |
| 2082 temp1 = temp1 / temp2; | |
| 251 | 2083 if( 0.0 < temp1 && temp1 < 1.0 ) |
| 126 | 2084 { |
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2085 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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2086 // minus because log is negative. |
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2087 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
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2088 temp2 = var_N2_halftime * 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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2089 |
| 126 | 2090 } |
| 2091 else | |
| 2092 { | |
| 233 | 2093 temp1 = 0.0; |
| 2094 temp2 = 0.0; | |
| 126 | 2095 } |
| 116 | 2096 |
| 126 | 2097 // He |
| 339 | 2098 temp3 = 0.1 - pres_tissue_He[ci]; |
| 126 | 2099 if (temp3 >= 0.0) |
| 2100 { | |
| 233 | 2101 temp3 = 0.0; |
| 2102 temp4 = 0.0; | |
| 126 | 2103 } |
| 2104 else | |
| 339 | 2105 temp3 = - temp3 / pres_tissue_He[ci]; |
| 251 | 2106 if( 0.0 < temp3 && temp3 < 1.0 ) |
| 126 | 2107 { |
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2108 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
| 126 | 2109 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
| 2110 // minus because log is negative | |
| 165 | 2111 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 2112 } |
| 2113 else | |
| 2114 { | |
| 233 | 2115 temp3 = 0.0; |
| 2116 temp4 = 0.0; | |
| 126 | 2117 } |
| 116 | 2118 |
| 126 | 2119 // saturation_time (for flight) |
| 2120 if (temp4 > temp2) | |
| 203 | 2121 desat_time = (unsigned short)temp4; |
| 126 | 2122 else |
| 203 | 2123 desat_time = (unsigned short)temp2; |
| 252 | 2124 |
| 251 | 2125 if(desat_time > int_O_desaturation_time) |
| 2126 int_O_desaturation_time = desat_time; | |
| 116 | 2127 |
| 126 | 2128 // N2 saturation in multiples of halftime for display purposes |
| 339 | 2129 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
| 2130 temp2 = temp2 + 80.0; // set center | |
| 126 | 2131 if (temp2 < 0.0) |
| 2132 temp2 = 0.0; | |
| 2133 if (temp2 > 255.0) | |
| 2134 temp2 = 255.0; | |
| 339 | 2135 char_O_tissue_N2_saturation[ci] = (char)temp2; |
| 233 | 2136 |
| 126 | 2137 // He saturation in multiples of halftime for display purposes |
| 339 | 2138 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
| 2139 temp4 = temp4 + 80.0; // set center | |
| 126 | 2140 if (temp4 < 0.0) |
| 2141 temp4 = 0.0; | |
| 2142 if (temp4 > 255.0) | |
| 2143 temp4 = 255.0; | |
| 339 | 2144 char_O_tissue_He_saturation[ci] = (char)temp4; |
| 126 | 2145 } // for |
| 167 | 2146 } |
| 116 | 2147 |
| 167 | 2148 ////////////////////////////////////////////////////////////////////////////// |
| 2149 // calc_wo_deco_step_1_min | |
| 2150 // | |
| 116 | 2151 // FIXED N2 Ratio |
| 2152 // optimized in v.101 (...saturation_multiplier) | |
| 2153 // desaturation slowed down to 70,42% | |
| 167 | 2154 // |
| 2155 static void calc_wo_deco_step_1_min(void) | |
| 116 | 2156 { |
| 251 | 2157 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2158 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
| 2159 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
| 2160 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2161 | |
| 116 | 2162 if(flag_in_divemode) |
| 2163 { | |
| 2164 flag_in_divemode = 0; | |
| 2165 set_dbg_end_of_dive(); | |
| 2166 } | |
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2167 |
| 126 | 2168 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 368 | 2169 pres_respiration = pres_surface = int_I_pres_surface * 0.001; |
| 2170 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
| 200 | 2171 ppHe = 0.0; |
| 126 | 2172 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 2173 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 2174 |
| 339 | 2175 calc_tissue(1); // update the pressure in the tissues N2/He in accordance with the new ambient pressure |
| 167 | 2176 |
|
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2177 clear_deco_table(); |
| 200 | 2178 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 2179 char_O_nullzeit = 0; |
| 168 | 2180 int_O_ascenttime = 0; |
| 323 | 2181 int_O_extra_ascenttime = 0; |
| 126 | 2182 calc_gradient_factor(); |
| 167 | 2183 } |
| 126 | 2184 |
| 167 | 2185 ////////////////////////////////////////////////////////////////////////////// |
| 368 | 2186 // calc_dive_interval |
| 2187 // | |
| 2188 // Prepare tissue for delay before the next dive simulation. | |
| 2189 // | |
| 2190 // Inputs: char_I_dive_interval == delay before dive (in 10' steps). | |
| 2191 // Outputs: pres_tissue_N2/He[], CNS_fraction | |
| 2192 // | |
| 2193 // Should be protected by deco_push_tissues_to_vault(), | |
| 2194 // deco_pull_tissues_from_vault() | |
| 2195 // | |
| 2196 // desaturation slowed down to 70,42%. | |
| 2197 // | |
| 2198 static void calc_dive_interval() | |
| 2199 { | |
| 2200 overlay unsigned char t; | |
| 2201 | |
| 2202 //---- Initialize simulation parameters ---------------------------------- | |
| 2203 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann | |
| 2204 pres_respiration = pres_surface = int_I_pres_surface * 0.001; | |
| 2205 ppN2 = N2_ratio * (pres_respiration - ppWater); | |
| 2206 ppHe = 0.0; | |
| 2207 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 2208 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 2209 | |
| 2210 //---- Perform simulation ------------------------------------------------ | |
| 2211 for(t=0; t<char_I_dive_interval; ++t) | |
| 2212 { | |
| 2213 calc_tissue(2); // period = 10min. | |
| 2214 CNS_fraction = 0.92587471 * CNS_fraction; // Half-time = 90min: (1/2)^(1/9) | |
| 2215 } | |
| 2216 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); | |
| 2217 } | |
| 2218 | |
| 2219 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 2220 ////////////////////////////////////////////////////////////////////////////// |
| 2221 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 2222 ////////////////////////////////////////////////////////////////////////////// | |
| 2223 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 2224 |
| 184 | 2225 #ifndef CROSS_COMPILE |
| 116 | 2226 void deco_hash(void) |
| 2227 { | |
| 167 | 2228 overlay unsigned char md_i, md_j; // Loop index. |
| 2229 overlay unsigned char md_t; | |
| 2230 overlay unsigned char md_buffer[16]; | |
| 2231 overlay unsigned char md_temp; | |
| 203 | 2232 overlay unsigned short md_pointer; |
| 167 | 2233 |
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2234 RESET_C_STACK |
| 126 | 2235 |
| 2236 // init | |
| 164 | 2237 for(md_i=0;md_i<16;md_i++) |
| 126 | 2238 { |
| 2239 md_state[md_i] = 0; | |
| 164 | 2240 char_O_hash[md_i] = 0; |
| 126 | 2241 } // for md_i 16 |
| 116 | 2242 |
| 126 | 2243 _asm |
| 167 | 2244 movlw 0x01 // md_pi address. |
| 2245 movwf TBLPTRU,0 | |
| 2246 movlw 0x7E | |
| 2247 movwf TBLPTRH,0 | |
| 2248 movlw 0x00 | |
| 2249 movwf TBLPTRL,0 | |
| 126 | 2250 _endasm; |
| 165 | 2251 md_i = 0; |
| 2252 do { | |
| 126 | 2253 _asm |
| 2254 TBLRDPOSTINC | |
| 2255 movff TABLAT,md_temp | |
| 2256 _endasm | |
| 165 | 2257 md_pi_subst[md_i++] = md_temp; |
| 2258 } while( md_i != 0 ); | |
| 2259 | |
| 126 | 2260 _asm |
| 167 | 2261 movlw 0x00 |
| 2262 movwf TBLPTRU,0 | |
| 2263 movlw 0x00 | |
| 2264 movwf TBLPTRH,0 | |
| 2265 movlw 0x00 | |
| 2266 movwf TBLPTRL,0 | |
| 126 | 2267 _endasm |
| 167 | 2268 |
| 126 | 2269 // cycle buffers |
| 2270 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 2271 { | |
| 2272 md_t = 0; | |
| 2273 for (md_i=0;md_i<16;md_i++) | |
| 2274 { | |
| 2275 if(md_pointer == 9) | |
| 164 | 2276 md_temp = char_O_hash[md_i]; |
| 126 | 2277 else |
| 2278 { | |
| 2279 _asm | |
| 167 | 2280 TBLRDPOSTINC |
| 2281 movff TABLAT,md_temp | |
| 126 | 2282 _endasm |
| 2283 } // else | |
| 167 | 2284 |
| 2285 md_buffer[md_i] = md_temp; | |
| 186 | 2286 md_state[md_i+16] = md_temp; |
| 2287 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2288 } // for md_i 16 |
| 2289 | |
| 2290 for (md_i=0;md_i<18;md_i++) | |
| 2291 { | |
| 2292 for (md_j=0;md_j<48;md_j++) | |
| 2293 { | |
| 167 | 2294 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2295 md_t = md_state[md_j]; |
| 2296 } // for md_j 48 | |
| 2297 md_t = (unsigned char)(md_t+1); | |
| 2298 } // for md_i 18 | |
| 164 | 2299 md_t = char_O_hash[15]; |
| 126 | 2300 |
| 2301 for (md_i=0;md_i<16;md_i++) | |
| 2302 { | |
| 167 | 2303 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2304 md_t = char_O_hash[md_i]; |
| 126 | 2305 } // for md_i 16 |
| 2306 } // for md_pointer | |
| 116 | 2307 } // void deco_hash(void) |
| 184 | 2308 #endif |
| 116 | 2309 |
| 167 | 2310 ////////////////////////////////////////////////////////////////////////////// |
| 2311 // deco_clear_CNS_fraction | |
| 2312 // | |
| 116 | 2313 // new in v.101 |
| 167 | 2314 // |
| 116 | 2315 void deco_clear_CNS_fraction(void) |
| 2316 { | |
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2317 RESET_C_STACK |
| 237 | 2318 |
| 126 | 2319 CNS_fraction = 0.0; |
| 2320 char_O_CNS_fraction = 0; | |
| 167 | 2321 } |
| 116 | 2322 |
| 167 | 2323 ////////////////////////////////////////////////////////////////////////////// |
| 2324 // deco_calc_CNS_fraction | |
| 2325 // | |
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2326 // Input: char_I_actual_ppO2 : Current condition (in decibars). |
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2327 // char_I_step_is_1min : use 1min or 10min steps instead of 2sec. |
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2328 // CNS_fraction : velue before period. |
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2329 // Output: CNS_fraction, char_O_CNS_fraction |
| 167 | 2330 // |
| 116 | 2331 void deco_calc_CNS_fraction(void) |
| 2332 { | |
| 292 | 2333 overlay float time_factor = 1.0f; |
| 126 | 2334 RESET_C_STACK |
| 167 | 2335 |
| 471 | 2336 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.56 ); |
| 237 | 2337 assert( char_I_actual_ppO2 > 15 ); |
| 2338 | |
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2339 if( char_I_step_is_1min == 1 ) |
| 292 | 2340 time_factor = 30.0f; |
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2341 else if( char_I_step_is_1min == 2 ) |
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2342 time_factor = 300.0f; |
| 116 | 2343 |
| 126 | 2344 if (char_I_actual_ppO2 < 50) |
| 292 | 2345 ; // no changes |
| 126 | 2346 else if (char_I_actual_ppO2 < 60) |
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2347 CNS_fraction += time_factor/(-540.0 * char_I_actual_ppO2 + 54000.0); |
| 126 | 2348 else if (char_I_actual_ppO2 < 70) |
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2349 CNS_fraction += time_factor/(-450.0 * char_I_actual_ppO2 + 48600.0); |
| 126 | 2350 else if (char_I_actual_ppO2 < 80) |
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2351 CNS_fraction += time_factor/(-360.0 * char_I_actual_ppO2 + 42300.0); |
| 126 | 2352 else if (char_I_actual_ppO2 < 90) |
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2353 CNS_fraction += time_factor/(-270.0 * char_I_actual_ppO2 + 35100.0); |
| 126 | 2354 else if (char_I_actual_ppO2 < 110) |
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2355 CNS_fraction += time_factor/(-180.0 * char_I_actual_ppO2 + 27000.0); |
| 126 | 2356 else if (char_I_actual_ppO2 < 150) |
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2357 CNS_fraction += time_factor/( -90.0 * char_I_actual_ppO2 + 17100.0); |
| 126 | 2358 else if (char_I_actual_ppO2 < 160) |
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2359 CNS_fraction += time_factor/(-225.0 * char_I_actual_ppO2 + 37350.0); |
| 126 | 2360 else if (char_I_actual_ppO2 < 165) |
| 292 | 2361 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 | 2362 else if (char_I_actual_ppO2 < 170) |
| 292 | 2363 CNS_fraction += time_factor*0.00102; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 |
| 126 | 2364 else if (char_I_actual_ppO2 < 175) |
| 292 | 2365 CNS_fraction += time_factor*0.00136; |
| 126 | 2366 else if (char_I_actual_ppO2 < 180) |
| 292 | 2367 CNS_fraction += time_factor*0.00180; |
| 126 | 2368 else if (char_I_actual_ppO2 < 185) |
| 292 | 2369 CNS_fraction += time_factor*0.00237; |
| 126 | 2370 else if (char_I_actual_ppO2 < 190) |
| 292 | 2371 CNS_fraction += time_factor*0.00310; |
| 126 | 2372 else if (char_I_actual_ppO2 < 195) |
| 292 | 2373 CNS_fraction += time_factor*0.00401; |
| 126 | 2374 else if (char_I_actual_ppO2 < 200) |
| 292 | 2375 CNS_fraction += time_factor*0.00517; |
| 126 | 2376 else if (char_I_actual_ppO2 < 230) |
| 292 | 2377 CNS_fraction += time_factor*0.0209; |
| 126 | 2378 else |
| 292 | 2379 CNS_fraction += time_factor*0.0482; // value for 2.5 |
| 116 | 2380 |
| 126 | 2381 if (CNS_fraction > 2.5) |
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2382 CNS_fraction = 2.55; |
| 126 | 2383 if (CNS_fraction < 0.0) |
| 2384 CNS_fraction = 0.0; | |
| 2385 | |
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2386 char_O_CNS_fraction = (unsigned char)(100.0 * CNS_fraction + 0.5); |
| 167 | 2387 } |
| 116 | 2388 |
| 167 | 2389 ////////////////////////////////////////////////////////////////////////////// |
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2390 // deco_calc_CNS_planning |
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2391 // |
| 488 | 2392 // Compute CNS during predicetd ascent. |
| 2393 // | |
| 2394 // Note: Needs a call to deco_push_tissues_to_vault(), | |
| 2395 // deco_pull_tissues_from_vault() to avoid trashing everything... | |
| 2396 // | |
| 2397 // Input: CNS_fraction, char_O_deco_time[], char_O_deco_depth[] | |
| 2398 // Output: CNS_fraction, char_O_CNS_fraction | |
| 2399 // Trashed: char_I_actual_ppO2 | |
| 2400 // | |
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2401 void deco_calc_CNS_planning(void) |
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2402 { |
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2403 RESET_C_STACK |
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2404 |
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2405 // Uses 1min CNS period: |
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2406 char_I_step_is_1min = 1; |
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2407 |
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2408 //---- Retrieve bottom Gas used, and set variables. |
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2409 sim_gas_last_used = char_I_first_gas; |
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2410 sim_gas_last_depth = 0; // Surface gas marker. |
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|
2411 gas_switch_set(); // Sets initial calc_N2/He_ratio |
|
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2412 |
|
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2413 //---- CCR mode : do the full TTS at once -------------------------------- |
|
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2414 if( char_I_const_ppO2 != 0 ) |
|
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2415 { |
|
443
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|
2416 overlay unsigned short t; // Needs 16bits here ! |
|
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2417 char_I_actual_ppO2 = char_I_const_ppO2; |
|
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2418 for(t=0; t<int_O_ascenttime; ++t) |
|
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|
2419 deco_calc_CNS_fraction(); |
|
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|
2420 } |
|
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|
2421 else //---- OC mode : have to follow all gas switches... ----------------- |
|
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2422 { |
|
443
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|
2423 overlay unsigned char i = 0; // Decostop loop counter |
|
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2424 overlay float actual_ppO2; |
|
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|
2425 overlay unsigned char time, t; |
|
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2426 |
|
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|
2427 //---- Ascent to surface delay |
|
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|
2428 // NOTE: count as if time is spent with bottom pressure, |
|
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|
2429 // AND the bottom gas |
| 488 | 2430 actual_ppO2 = (pres_surface + char_I_bottom_depth * METER_TO_BAR - ppWater) |
|
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2431 * (1.0 - calc_N2_ratio - calc_He_ratio); |
|
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2432 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
|
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2433 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
|
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|
2434 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
|
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|
2435 |
|
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|
2436 // Ascent time (rounded up): |
|
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|
2437 time = (unsigned char)(0.1 * char_I_bottom_depth + 0.5); |
|
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2438 |
|
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|
2439 for(t=0; t<time; ++t) |
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|
2440 deco_calc_CNS_fraction(); |
|
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|
2441 |
|
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|
2442 //---- Do all further stops |
|
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|
2443 for(i=0; i<NUM_STOPS; ++i) |
|
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|
2444 { |
|
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|
2445 //---- Get next stop |
|
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|
2446 time = char_O_deco_time[i]; |
|
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|
2447 temp_depth_limit = char_O_deco_depth[i] & 0x7F; |
|
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|
2448 if( time == 0 ) break; // End of table: done. |
|
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2449 |
|
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|
2450 //---- Gas Switch ? |
|
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|
2451 if( char_O_deco_depth[i] & 0x80 ) |
|
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|
2452 gas_switch_deepest(); |
|
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|
2453 |
|
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|
2454 //---- Convert Depth and N2_ratio to ppO2 |
| 488 | 2455 actual_ppO2 = (pres_surface + temp_depth_limit * METER_TO_BAR - ppWater) |
|
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|
2456 * (1.0 - calc_N2_ratio - calc_He_ratio); |
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|
2457 if( actual_ppO2 < 0.0 ) actual_ppO2 = 0.0; |
|
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|
2458 if( actual_ppO2 > 2.50 ) actual_ppO2 = 2.55; |
|
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2459 char_I_actual_ppO2 = (unsigned char)(100.0 * actual_ppO2 + 0.5); |
|
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|
2460 |
|
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|
2461 //---- Apply the stop |
|
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|
2462 for(t=0; t<time; ++t) |
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|
2463 deco_calc_CNS_fraction(); |
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|
2464 } |
| 488 | 2465 } |
| 2466 | |
| 2467 // Back to normal mode... | |
| 2468 char_I_step_is_1min = 0; | |
|
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|
2469 } |
|
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|
2470 |
|
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|
2471 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 2472 // deco_calc_CNS_decrease_15min |
| 2473 // | |
| 116 | 2474 // new in v.101 |
| 167 | 2475 // |
| 116 | 2476 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2477 // (Used in sleepmode, for low battery mode). |
| 167 | 2478 // |
| 116 | 2479 // Output: char_O_CNS_fraction |
| 2480 // Uses and Updates: CNS_fraction | |
| 167 | 2481 // |
| 116 | 2482 void deco_calc_CNS_decrease_15min(void) |
| 2483 { | |
| 237 | 2484 RESET_C_STACK |
| 2485 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
| 2486 | |
| 126 | 2487 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2488 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2489 } | |
| 116 | 2490 |
| 167 | 2491 ////////////////////////////////////////////////////////////////////////////// |
| 2492 // deco_calc_percentage | |
| 2493 // | |
| 116 | 2494 // new in v.101 |
| 167 | 2495 // |
| 116 | 2496 // calculates int_I_temp * char_I_temp / 100 |
| 2497 // output is int_I_temp | |
| 200 | 2498 // |
| 2499 // Used to compute NoFly remaining time. | |
|
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|
2500 // |
| 116 | 2501 void deco_calc_percentage(void) |
| 2502 { | |
|
122
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|
2503 RESET_C_STACK |
|
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2504 |
| 237 | 2505 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 2506 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
| 2507 | |
|
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|
2508 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2509 |
| 302 | 2510 assert( int_I_temp < 2880 ); // Less than 48h... |
|
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|
2511 } |
|
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|
2512 |
|
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|
2513 |
|
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|
2514 ////////////////////////////////////////////////////////////////////////////// |
|
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|
2515 // deco_gas_volumes |
|
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|
2516 // |
|
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|
2517 // new in v.111 |
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|
2518 // |
|
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|
2519 // calculates volumes for each gas. |
|
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|
2520 // |
|
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|
2521 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
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|
2522 // Gas list. |
|
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|
2523 // char_I_first_gas is the bottom gas. |
|
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|
2524 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
234
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2525 // CF#54 == TRUE if shallowest stop first. |
|
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|
2526 // CF#56 == bottom liters/minutes (5 .. 50) or bar/min. |
|
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|
2527 // CF#57 == deco liters/minutes (5 .. 50) or bar/min. |
| 224 | 2528 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
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|
2529 // |
|
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|
2530 void deco_gas_volumes(void) |
|
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|
2531 { |
| 338 | 2532 overlay float volumes[NUM_GAS]; |
|
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|
2533 overlay float bottom_usage, deco_usage; |
|
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|
2534 overlay unsigned char i, deepest_first; |
| 241 | 2535 overlay unsigned char gas; |
|
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|
2536 RESET_C_STACK |
|
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|
2537 |
|
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|
2538 //---- initialize with bottom consumption -------------------------------- |
| 338 | 2539 for(i=0; i<NUM_GAS; ++i) // Nothing yet... |
|
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|
2540 volumes[i] = 0.0; |
|
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|
2541 |
| 338 | 2542 assert(1 <= char_I_first_gas && char_I_first_gas <= NUM_GAS); |
| 241 | 2543 gas = char_I_first_gas - 1; |
| 2544 | |
|
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|
2545 bottom_usage = (float) read_custom_function(56); |
| 265 | 2546 if( bottom_usage > 0.0 ) |
| 2547 volumes[gas] | |
| 2548 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
| 2549 * char_I_bottom_time // in minutes. | |
| 2550 * bottom_usage; // In liter/minutes. | |
| 2551 else | |
| 2552 volumes[gas] = 65535.0; | |
|
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2553 |
|
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|
2554 //---- Ascent usage ------------------------------------------------------ |
|
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|
2555 |
|
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2556 deepest_first = read_custom_function(54) == 0; |
|
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|
2557 deco_usage = (float) read_custom_function(57); // In liter/minutes. |
|
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2558 |
| 224 | 2559 // Usage up to the first stop: |
| 2560 // - computed at MAX depth (easier, safer), | |
|
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2561 // - with an ascent speed of 10m/min. |
| 224 | 2562 // - with ascent litter / minutes. |
|
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|
2563 // - still using bottom gas: |
|
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|
2564 if( deco_usage > 0.0 ) |
| 265 | 2565 volumes[gas] |
| 2566 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar | |
| 2567 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) | |
|
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|
2568 * deco_usage; // Consumption ( xxx / min @ 1 bar) |
| 265 | 2569 else |
| 2570 volumes[gas] = 65535.0; | |
|
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2571 |
| 338 | 2572 for(i=0; i<NUM_STOPS; ++i) |
|
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2573 { |
| 241 | 2574 overlay unsigned char j; |
|
234
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2575 overlay unsigned char depth, time, ascent; |
|
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2576 |
|
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|
2577 // Manage stops in reverse order (CF#54) |
|
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2578 if( deepest_first ) |
|
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|
2579 { |
| 241 | 2580 time = char_O_deco_time[i]; |
|
234
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2581 if( time == 0 ) break; // End of table: done. |
|
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2582 |
|
288
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2583 ascent = depth = char_O_deco_depth[i] & 0x7F; |
|
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2584 if( i < 31 ) |
|
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2585 ascent -= char_O_deco_depth[i+1] & 0x7F; |
|
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|
2586 } |
|
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2587 else |
|
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|
2588 { |
|
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|
2589 time = char_O_deco_time[31-i]; |
|
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2590 if( time == 0 ) continue; // not yet: still searh table. |
|
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2591 |
|
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|
2592 ascent = depth = char_O_deco_depth[31-i] & 0x7F; |
|
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2593 if( i < 31 ) |
|
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|
2594 ascent -= char_O_deco_depth[30-i] & 0x7F; |
|
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2595 } |
|
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|
2596 |
|
222
638f8e17bd51
Prototyping deco_gas_volumes() to compute gas consumption per tank with decoplanning.
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|
2597 // Gas switch depth ? |
| 338 | 2598 for(j=0; j<NUM_GAS; ++j) |
|
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|
2599 { |
|
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2600 if( depth <= char_I_deco_gas_change[j] ) |
| 241 | 2601 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 224 | 2602 gas = j; |
|
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2603 } |
|
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|
2604 |
|
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|
2605 // usage during stop: |
| 224 | 2606 // Note: because first gas is not in there, increment gas+1 |
|
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2607 if( deco_usage > 0.0 ) |
| 265 | 2608 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. |
| 2609 * time // in minutes. | |
|
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2610 * deco_usage // in xxx / min @ 1bar. |
| 265 | 2611 // Plus usage during ascent to the next stop, at 10m/min. |
| 2612 + (depth*0.1 + 1.0) | |
|
275
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2613 * ascent*0.1 // metre --> min |
|
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2614 * deco_usage; |
| 265 | 2615 else |
| 2616 volumes[gas] = 65535.0; | |
|
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2617 } |
|
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|
2618 |
|
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|
2619 //---- convert results for the ASM interface ----------------------------- |
| 338 | 2620 for(i=0; i<NUM_GAS; ++i) |
|
441
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2621 if( volumes[i] > 65534.0 ) |
| 224 | 2622 int_O_gas_volumes[i] = 65535; |
|
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2623 else |
|
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|
2624 int_O_gas_volumes[i] = (unsigned short)(volumes[i] + 0.5); |
| 116 | 2625 } |
| 2626 | |
| 167 | 2627 ////////////////////////////////////////////////////////////////////////////// |
| 2628 | |
| 116 | 2629 void deco_push_tissues_to_vault(void) |
| 2630 { | |
| 167 | 2631 overlay unsigned char x; |
|
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|
2632 RESET_C_STACK |
| 167 | 2633 |
| 116 | 2634 cns_vault = CNS_fraction; |
| 339 | 2635 for (x=0;x<NUM_COMP;x++) |
| 2636 { | |
| 2637 pres_tissue_N2_vault[x] = pres_tissue_N2[x]; | |
| 2638 pres_tissue_He_vault[x] = pres_tissue_He[x]; | |
| 2639 } | |
| 116 | 2640 } |
| 167 | 2641 |
| 116 | 2642 void deco_pull_tissues_from_vault(void) |
| 2643 { | |
| 167 | 2644 overlay unsigned char x; |
|
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|
2645 RESET_C_STACK |
| 167 | 2646 |
| 339 | 2647 for (x=0; x<NUM_COMP; x++) |
| 2648 { | |
| 2649 pres_tissue_N2[x] = pres_tissue_N2_vault[x]; | |
| 2650 pres_tissue_He[x] = pres_tissue_He_vault[x]; | |
| 2651 } | |
| 292 | 2652 |
| 2653 // Restore both CNS variable, too. | |
| 2654 CNS_fraction = cns_vault; | |
| 2655 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); | |
| 116 | 2656 } |
| 2657 | |
| 167 | 2658 ////////////////////////////////////////////////////////////////////////////// |
| 2659 // | |
| 184 | 2660 #ifndef CROSS_COMPILE |
| 2661 void main() {} | |
| 2662 #endif |