Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 233:2cbaa01dac26
Hunting for NoFly (bug BB13)... not found yet...
+ In DEBUG compile, keep simulated dives in logbook, desat and nofly time, etc.
| author | JeanDo |
|---|---|
| date | Tue, 15 Mar 2011 19:16:34 +0100 |
| parents | 24cd6e256d61 |
| children | bb8940caebe1 |
| 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. |
| 217 | 73 // 2011/02/24: [jDG] Fixed inconsistencies introduced by gas switch delays. |
| 116 | 74 // |
| 167 | 75 // TODO: |
| 76 // + Allow to abort MD2 calculation (have to restart next time). | |
| 77 // | |
| 78 // Literature: | |
| 200 | 79 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 80 // 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 |
| 81 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 82 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 83 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 84 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 85 // |
| 86 // | |
| 116 | 87 |
| 88 // ********************* | |
| 89 // ** I N C L U D E S ** | |
| 90 // ********************* | |
| 91 #include <math.h> | |
| 167 | 92 |
| 192 | 93 // *********************************************** |
| 94 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 95 // *********************************************** | |
| 96 | |
| 97 #include "p2_definitions.h" | |
| 98 #include "shared_definitions.h" | |
| 99 | |
| 200 | 100 // Water vapour partial pressure in the lumb. |
| 233 | 101 #define ppWVapour 0.0627 |
| 200 | 102 |
| 167 | 103 // ************************* |
| 104 // ** P R O T O T Y P E S ** | |
| 105 // ************************* | |
| 106 | |
| 107 static void calc_hauptroutine(void); | |
| 108 static void calc_nullzeit(void); | |
| 109 | |
| 192 | 110 static void calc_tissue(PARAMETER unsigned char period); |
| 111 static void calc_limit(PARAMETER float GF_current); | |
| 112 | |
| 167 | 113 static void clear_tissue(void); |
| 114 static void calc_ascenttime(void); | |
| 115 static void update_startvalues(void); | |
|
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116 static void clear_deco_table(void); |
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117 static void update_deco_table(void); |
| 192 | 118 |
| 119 static void backup_sim_pres_tissue(void); | |
| 120 static void restore_sim_pres_tissue(void); | |
| 121 static void sim_tissue(PARAMETER unsigned char period); | |
| 122 static void sim_limit(PARAMETER float GF_current); | |
| 167 | 123 static void calc_gradient_factor(void); |
| 124 static void calc_wo_deco_step_1_min(void); | |
| 125 | |
| 126 static void calc_hauptroutine_data_input(void); | |
| 127 static void calc_hauptroutine_update_tissues(void); | |
| 128 static void calc_hauptroutine_calc_deco(void); | |
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129 static void sim_ascent_to_first_stop(void); |
| 167 | 130 |
| 217 | 131 static void deepest_gas_switch(void); |
| 132 static void best_gas_switch(void); | |
| 133 static void set_gas(void); | |
| 134 | |
| 171 | 135 static void calc_nextdecodepth(void); |
| 116 | 136 |
| 200 | 137 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 138 #pragma udata bank4=0x400 |
| 116 | 139 |
| 140 static float temp_limit; | |
| 141 static float GF_low; | |
| 142 static float GF_high; | |
| 143 static float GF_delta; | |
| 192 | 144 static unsigned char low_depth; // Depth of deepest stop |
| 145 static float locked_GF_step; // GF_delta / low_depth | |
| 146 | |
| 147 static unsigned char temp_depth_limit; | |
| 171 | 148 |
| 192 | 149 // Simulation context: used to predict ascent. |
| 150 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 151 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 152 |
| 192 | 153 // Real context: what we are doing now. |
| 154 static float calc_lead_tissue_limit; // | |
| 116 | 155 |
|
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156 static unsigned char internal_deco_time[32]; |
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157 static unsigned char internal_deco_depth[32]; |
| 116 | 158 |
| 159 static float cns_vault; | |
| 160 static float pres_tissue_vault[32]; | |
| 161 | |
| 163 | 162 //---- Bank 5 parameters ----------------------------------------------------- |
| 163 #pragma udata bank5=0x500 | |
| 164 | |
| 167 | 165 static unsigned char ci; |
| 116 | 166 static float pres_respiration; |
| 167 static float pres_surface; | |
| 168 static float temp_deco; | |
| 200 | 169 static float ppO2; |
| 170 static float ppHe; | |
| 116 | 171 static float temp_tissue; |
| 200 | 172 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 173 static float He_ratio; // Breathed gas helium ratio. | |
| 174 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 175 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 176 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 177 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 178 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 179 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 180 |
| 164 | 181 static float pres_diluent; // new in v.101 |
| 182 static float const_ppO2; // new in v.101 | |
| 183 static float deco_ppO2_change; // new in v.101 | |
| 184 static float deco_ppO2; // new in v.101 | |
| 116 | 185 |
| 200 | 186 static unsigned char sim_gas_last_used; // Last used gas, to detected a gas switch. |
| 203 | 187 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 188 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 189 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 190 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 191 static float CNS_fraction; // new in v.101 | |
| 192 static float float_saturation_multiplier; // new in v.101 | |
| 193 static float float_desaturation_multiplier; // new in v.101 | |
| 167 | 194 static float float_deco_distance; // new in v.101 |
| 195 static char flag_in_divemode; // new in v.108 | |
| 196 | |
| 225 | 197 static unsigned char deco_gas_change[5]; // new in v.109 |
| 167 | 198 |
| 163 | 199 //---- Bank 6 parameters ----------------------------------------------------- |
| 200 #pragma udata bank6=0x600 | |
| 116 | 201 |
| 197 | 202 float pres_tissue[32]; |
| 203 float pres_tissue_limit[16]; | |
| 204 float sim_pres_tissue_limit[16]; | |
| 116 | 205 |
| 163 | 206 //---- Bank 7 parameters ----------------------------------------------------- |
| 207 #pragma udata bank7=0x700 | |
| 208 | |
| 197 | 209 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
| 116 | 210 static float sim_pres_tissue_backup[32]; |
| 211 | |
| 163 | 212 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 213 #pragma udata bank8=0x800 |
| 163 | 214 |
| 116 | 215 static char md_pi_subst[256]; |
|
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216 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 217 |
| 163 | 218 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 219 #pragma udata bank9=0x900 |
| 116 | 220 |
| 163 | 221 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 222 |
| 164 | 223 // internal, dbg: |
| 167 | 224 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 225 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 226 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 224 | 227 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
| 228 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
| 164 | 229 static float DBG_pres_surface; // new in v.108 |
| 230 static float DBG_GF_low; // new in v.108 | |
| 231 static float DBG_GF_high; // new in v.108 | |
| 232 static float DBG_const_ppO2; // new in v.108 | |
| 233 static float DBG_deco_ppO2_change; // new in v.108 | |
| 234 static float DBG_deco_ppO2; // new in v.108 | |
| 235 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 236 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 237 static float DBG_float_deco_distance; // new in v.108 | |
| 238 static float DBG_N2_ratio; // new in v.108 | |
| 239 static float DBG_He_ratio; // new in v.108 | |
| 240 | |
| 167 | 241 ////////////////////////////////////////////////////////////////////////////// |
| 242 ////////////////////////////////////////////////////////////////////////////// | |
| 243 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 244 ////////////////////////////////////////////////////////////////////////////// | |
| 245 ////////////////////////////////////////////////////////////////////////////// | |
| 246 // | |
| 247 // End of PROM code is 17F00, So push tables on PROM top... | |
| 248 // | |
| 249 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 250 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 251 |
| 167 | 252 // Magic table to compute the MD2 HASH |
| 253 // | |
| 254 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 255 rom const rom unsigned short md_pi[] = |
| 116 | 256 { |
| 257 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 258 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 259 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 260 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 261 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 262 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 263 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 264 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 265 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 266 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 267 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 268 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 269 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 270 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 271 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 272 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 273 }; | |
| 274 | |
| 167 | 275 ////////////////////////////////////////////////////////////////////////////// |
| 276 ////////////////////////////////////////////////////////////////////////////// | |
| 277 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 278 ////////////////////////////////////////////////////////////////////////////// | |
| 279 ////////////////////////////////////////////////////////////////////////////// | |
| 280 // | |
| 116 | 281 // all new in v.102 |
| 282 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 283 | |
| 284 #pragma code p2_deco = 0x0C000 | |
| 285 | |
| 167 | 286 ////////////////////////////////////////////////////////////////////////////// |
| 287 // DBS - debug on start of dive | |
| 288 // | |
| 289 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 290 { |
| 167 | 291 overlay char i; // Local loop index. |
| 292 | |
| 293 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 294 int_O_DBS_bitfield = 0; |
| 295 int_O_DBS2_bitfield = 0; | |
| 296 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 297 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 298 else | |
| 299 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 300 int_O_DBG_post_bitfield = 0; | |
| 167 | 301 |
| 302 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 303 char_O_NDL_at_20mtr = 255; |
| 304 | |
| 167 | 305 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 306 DBG_N2_ratio = N2_ratio; |
| 307 DBG_He_ratio = He_ratio; | |
| 308 DBG_char_I_deco_model = char_I_deco_model; | |
| 309 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 310 DBG_pres_surface = pres_surface; | |
| 311 DBG_GF_low = GF_low; | |
| 312 DBG_GF_high = GF_high; | |
| 313 DBG_const_ppO2 = const_ppO2; | |
| 314 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 315 DBG_deco_ppO2 = deco_ppO2; | |
| 224 | 316 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 317 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 318 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 319 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 320 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 321 DBG_float_deco_distance = float_deco_distance; | |
| 322 | |
| 167 | 323 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 324 if(char_I_deco_model) |
| 325 int_O_DBS_bitfield |= DBS_mode; | |
| 326 if(const_ppO2) | |
| 327 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 328 for(i = 16; i < 32; i++) |
| 329 if(pres_tissue[i]) | |
| 116 | 330 int_O_DBS_bitfield |= DBS_HE_sat; |
| 331 if(deco_ppO2_change) | |
| 332 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 333 if(float_saturation_multiplier < 0.99) | |
| 334 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 335 if(float_saturation_multiplier > 1.3) | |
| 336 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 337 if(GF_low < 0.19) | |
| 338 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 339 if(GF_low > 1.01) | |
| 340 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 341 if(GF_high < 0.6) | |
| 342 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 343 if(GF_high > 1.01) | |
| 344 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 345 if((N2_ratio + He_ratio) > 0.95) | |
| 346 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 347 if((N2_ratio + He_ratio) < 0.05) | |
| 348 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 349 if(float_deco_distance > 0.25) | |
| 350 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 351 if(char_I_depth_last_deco > 8) | |
| 352 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 353 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 354 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 355 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 356 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 357 if(pres_respiration > 3.0) | |
| 358 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 359 if(pres_surface - pres_respiration > 0.2) | |
| 360 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 361 if(pres_surface < 0.75) | |
| 362 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 363 if(pres_surface > 1.11) | |
| 364 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 365 if(float_desaturation_multiplier < 0.70) | |
| 366 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 367 if(float_desaturation_multiplier > 1.01) | |
| 368 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 369 if(GF_low > GF_high) | |
| 370 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 371 } | |
| 372 | |
| 167 | 373 ////////////////////////////////////////////////////////////////////////////// |
| 374 // DBG - set DBG to end_of_dive | |
| 375 // | |
| 376 static void set_dbg_end_of_dive(void) | |
| 116 | 377 { |
| 378 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 379 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 380 } | |
| 381 | |
| 167 | 382 ////////////////////////////////////////////////////////////////////////////// |
| 383 // DBG - NDL at first 20 m. hit | |
| 384 // | |
| 385 static void check_ndl(void) | |
| 116 | 386 { |
| 167 | 387 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 388 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 389 ) | |
| 116 | 390 { |
| 167 | 391 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 392 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 393 char_O_NDL_at_20mtr = 254; |
| 116 | 394 } |
| 395 } | |
| 396 | |
| 167 | 397 ////////////////////////////////////////////////////////////////////////////// |
| 398 // DBG - multi main during dive | |
| 399 // | |
| 184 | 400 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 401 { |
| 203 | 402 overlay unsigned short temp_DBS = 0; |
| 200 | 403 overlay unsigned char i; // Local loop index. |
| 167 | 404 |
| 116 | 405 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 406 temp_DBS |= DBG_c_gas; | |
| 407 if(DBG_const_ppO2 != const_ppO2) | |
| 408 temp_DBS |= DBG_c_ppO2; | |
| 167 | 409 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 410 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 411 ) | |
| 116 | 412 temp_DBS |= DBG_CdeSAT; |
| 413 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 414 temp_DBS |= DBG_C_MODE; | |
| 415 if(DBG_pres_surface != pres_surface) | |
| 416 temp_DBS |= DBG_C_SURF; | |
| 167 | 417 |
| 418 if( !DBS_HE_sat && !He_ratio) | |
| 419 for(i = 16; i < 32; i++) | |
| 420 if(pres_tissue[i]) | |
| 116 | 421 temp_DBS |= DBG_HEwoHE; |
| 167 | 422 |
| 116 | 423 if(DBG_deco_ppO2 != deco_ppO2) |
| 424 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 425 |
| 225 | 426 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 427 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 428 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 429 temp_DBS |= DBG_C_DGAS; |
| 167 | 430 |
| 116 | 431 if(DBG_float_deco_distance != float_deco_distance) |
| 432 temp_DBS |= DBG_C_DIST; | |
| 433 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 434 temp_DBS |= DBG_C_LAST; | |
| 167 | 435 if( DBG_GF_low != GF_low |
| 436 || DBG_GF_high != GF_high ) | |
| 116 | 437 temp_DBS |= DBG_C_GF; |
| 438 if(pres_respiration > 13.0) | |
| 439 temp_DBS |= DBG_PHIGH; | |
| 440 if(pres_surface - pres_respiration > 0.2) | |
| 441 temp_DBS |= DBG_PLOW; | |
| 442 if(is_post_check) | |
| 443 int_O_DBG_post_bitfield |= temp_DBS; | |
| 444 else | |
| 445 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 446 } | |
| 447 | |
| 167 | 448 ////////////////////////////////////////////////////////////////////////////// |
| 449 // DBG - prior to calc. of dive | |
| 450 // | |
| 451 static void check_pre_dbg(void) | |
| 116 | 452 { |
| 453 check_dbg(0); | |
| 454 } | |
| 455 | |
| 167 | 456 ////////////////////////////////////////////////////////////////////////////// |
| 457 // DBG - after decocalc of dive | |
| 458 // | |
| 459 static void check_post_dbg(void) | |
| 116 | 460 { |
| 461 check_dbg(1); | |
| 462 } | |
| 463 | |
| 165 | 464 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 465 ////////////////////////////////////////////////////////////////////////////// |
| 466 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 467 ////////////////////////////////////////////////////////////////////////////// | |
| 468 ////////////////////////////////////////////////////////////////////////////// | |
| 469 | |
| 203 | 470 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 471 { |
| 184 | 472 #ifdef CROSS_COMPILE |
| 473 extern unsigned short custom_functions[]; | |
| 474 return custom_functions[cf]; | |
| 475 #else | |
| 167 | 476 extern unsigned char hi, lo; |
| 477 extern void getcustom15(); | |
| 478 _asm | |
| 479 movff cf,WREG | |
| 480 call getcustom15,0 | |
| 481 movff lo,PRODL | |
| 482 movff hi,PRODH | |
| 483 _endasm | |
| 184 | 484 #endif |
| 167 | 485 } |
| 486 | |
| 487 ////////////////////////////////////////////////////////////////////////////// | |
| 165 | 488 // read buhlmann tables for compatriment ci |
| 167 | 489 // If period == 0 : 2sec interval |
| 490 // 1 : 1 min interval | |
| 491 // 2 : 10 min interval. | |
| 184 | 492 static void read_buhlmann_coefficients(PARAMETER char period) |
| 165 | 493 { |
| 184 | 494 #ifndef CROSS_COMPILE |
| 167 | 495 // Note: we don't use far rom pointer, because the |
| 496 // 24 bits is to complex, hence we have to set | |
| 497 // the UPPER page ourself... | |
| 498 // --> Set zero if tables are moved to lower pages ! | |
| 499 _asm | |
| 500 movlw 1 | |
| 501 movwf TBLPTRU,0 | |
| 502 _endasm | |
| 184 | 503 #endif |
| 197 | 504 assert( 0 <= ci && ci < 16 ); |
| 167 | 505 |
| 165 | 506 var_N2_a = buhlmann_a[ci]; |
| 507 var_N2_b = buhlmann_b[ci]; | |
| 167 | 508 var_He_a = (buhlmann_a+16)[ci]; |
| 509 var_He_b = (buhlmann_b+16)[ci]; | |
| 510 | |
| 165 | 511 // Check reading consistency: |
| 512 if( (var_N2_a < 0.231) | |
| 513 || (var_N2_a > 1.27) | |
| 514 || (var_N2_b < 0.504) | |
| 515 || (var_N2_b > 0.966) | |
| 516 || (var_He_a < 0.510) | |
| 517 || (var_He_a > 1.75) | |
| 518 || (var_He_b < 0.423) | |
| 519 || (var_He_b > 0.927) | |
| 520 ) | |
| 521 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 167 | 522 |
| 165 | 523 // Integration intervals. |
| 167 | 524 switch(period) |
| 165 | 525 { |
| 167 | 526 case -1://---- no interval ----------------------------------------------- |
| 527 var_N2_e = var_He_e = 0.0; | |
| 528 break; | |
| 529 | |
| 165 | 530 case 0: //---- 2 sec ----------------------------------------------------- |
| 531 var_N2_e = e2secs[ci]; | |
| 167 | 532 var_He_e = (e2secs+16)[ci]; |
| 165 | 533 |
| 534 // Check reading consistency: | |
| 535 if( (var_N2_e < 0.0000363) | |
| 536 || (var_N2_e > 0.00577) | |
| 537 || (var_He_e < 0.0000961) | |
| 538 || (var_He_e > 0.150) | |
| 539 ) | |
| 540 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 541 | |
| 542 break; | |
| 543 | |
| 544 case 1: //---- 1 min ----------------------------------------------------- | |
| 545 var_N2_e = e1min[ci]; | |
| 167 | 546 var_He_e = (e1min+16)[ci]; |
| 165 | 547 |
| 548 // Check reading consistency: | |
| 549 if( (var_N2_e < 1.09E-3) | |
| 550 || (var_N2_e > 0.1592) | |
| 551 || (var_He_e < 0.00288) | |
| 552 || (var_He_e > 0.3682) | |
| 553 ) | |
| 554 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 555 | |
| 556 break; | |
| 557 | |
| 558 case 2: //---- 10 min ---------------------------------------------------- | |
| 559 var_N2_e = e10min[ci]; | |
| 167 | 560 var_He_e = (e10min+16)[ci]; |
| 165 | 561 |
| 562 // Check reading consistency: | |
| 563 if( (var_N2_e < 0.01085) | |
| 564 || (var_N2_e > 0.82323) | |
| 565 || (var_He_e < 0.02846) | |
| 566 || (var_He_e > 0.98986) | |
| 567 ) | |
| 568 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 569 | |
| 570 break; | |
| 197 | 571 |
| 572 default: | |
| 573 assert(0); // Never go there... | |
| 165 | 574 } |
| 575 } | |
| 576 | |
| 577 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 578 // calc_next_decodepth_GF |
| 165 | 579 // |
| 116 | 580 // new in v.102 |
| 165 | 581 // |
| 116 | 582 // INPUT, changing during dive: |
| 192 | 583 // low_depth |
| 167 | 584 // |
| 116 | 585 // INPUT, fixed during dive: |
| 167 | 586 // pres_surface |
| 587 // GF_delta | |
| 588 // GF_high | |
| 589 // GF_low | |
| 171 | 590 // char_I_depth_last_deco |
| 167 | 591 // float_deco_distance |
| 592 // | |
| 116 | 593 // OUTPUT |
| 171 | 594 // locked_GF_step |
| 167 | 595 // temp_depth_limt |
| 192 | 596 // low_depth |
| 167 | 597 // |
| 171 | 598 static void calc_nextdecodepth(void) |
| 167 | 599 { |
| 212 | 600 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 601 if (char_I_deco_model == 1) |
| 602 { | |
| 192 | 603 // Recompute leading gas limit, at current depth: |
| 604 overlay float depth = (temp_deco - pres_surface) / 0.09995; | |
| 605 assert( depth >= 0.0 ); | |
| 203 | 606 assert( low_depth < 255 ); |
| 167 | 607 |
| 192 | 608 if( depth > low_depth ) |
| 609 sim_limit( GF_low ); | |
| 610 else | |
| 611 sim_limit( GF_high - depth * locked_GF_step ); | |
| 612 | |
| 613 // Stops are needed ? | |
| 614 if( sim_lead_tissue_limit > pres_surface ) | |
| 615 { | |
| 616 // Deepest stop, in meter. | |
| 203 | 617 overlay unsigned char first_stop = 3 * (short)(0.99 + (sim_lead_tissue_limit - pres_surface) / 0.29985); |
| 192 | 618 assert( first_stop < 128 ); |
| 171 | 619 |
| 212 | 620 // Apply correction for the shallowest stop. |
| 192 | 621 if( first_stop == 3 ) // new in v104 |
| 622 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 623 |
| 192 | 624 // Check all stops until one is higher than tolerated presure |
| 625 while(first_stop > 0) | |
| 626 { | |
| 627 overlay unsigned char next_stop; // Next index (0..30) | |
| 628 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 629 |
| 192 | 630 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 631 next_stop = 0; | |
| 216 | 632 else if( first_stop == 6 ) |
| 633 next_stop = char_I_depth_last_deco; | |
| 192 | 634 else |
| 635 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 636 |
| 192 | 637 pres_stop = next_stop * 0.09995 // Meters to bar |
| 638 + pres_surface; | |
| 639 | |
| 212 | 640 // Keep GF_low until a first stop depth is found: |
| 641 if( next_stop >= low_depth ) | |
| 642 sim_limit( GF_low ); | |
| 643 else | |
| 644 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 645 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 646 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 647 |
| 192 | 648 // upper limit (lowest pressure tolerated): |
| 649 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 650 break; | |
| 651 | |
| 652 // Else, validate that stop and loop... | |
| 653 first_stop = next_stop; | |
| 654 } | |
| 171 | 655 |
| 212 | 656 // Is it a new deepest first stop ? If yes this is the reference for |
| 657 // the varying gradient factor. So reset that: | |
| 658 if( first_stop > low_depth ) | |
| 659 { | |
| 660 // Store the deepest stop depth, as reference for GF_low. | |
| 661 low_depth = first_stop; | |
| 662 locked_GF_step = GF_delta / low_depth; | |
| 663 } | |
| 664 | |
| 665 // next stop is the last validated depth found, aka first_stop | |
| 192 | 666 temp_depth_limit = first_stop; // Stop depth, in meter. |
| 667 } | |
| 171 | 668 else |
| 192 | 669 temp_depth_limit = 0; // stop depth, in meter. |
| 116 | 670 } |
| 167 | 671 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 672 { |
| 192 | 673 overlay float pres_gradient; |
| 674 | |
| 675 // Original model | |
| 116 | 676 // optimized in v.101 |
| 171 | 677 // char_I_depth_last_deco included in v.101 |
| 116 | 678 |
| 192 | 679 // Compute sim_lead_tissue_limit too, but just once. |
| 680 sim_limit(1.0); | |
| 681 | |
| 682 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 683 if (pres_gradient >= 0) |
| 116 | 684 { |
| 192 | 685 pres_gradient /= 0.29985; // Bar --> stop number; |
| 203 | 686 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> meter : depth for deco |
| 212 | 687 if (temp_depth_limit != 0) // At surface ? |
| 116 | 688 { |
| 171 | 689 if (temp_depth_limit < char_I_depth_last_deco) // Implement last stop at 4m/5m/6m... |
| 690 temp_depth_limit = char_I_depth_last_deco; | |
| 691 } | |
| 692 } | |
| 116 | 693 else |
| 192 | 694 temp_depth_limit = 0; // stop depth, in meter. |
| 171 | 695 } |
| 212 | 696 |
| 217 | 697 //---- Check gas change -------------------------------------------------- |
| 698 best_gas_switch(); // Update temp_depth_limit if there is a change, | |
| 212 | 699 // Calculate N2_ratio and He_ratio too. |
| 167 | 700 } |
| 116 | 701 |
| 167 | 702 ////////////////////////////////////////////////////////////////////////////// |
|
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703 // copy_deco_table |
| 167 | 704 // |
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705 // Buffer the stops, once computed, so we can continue to display them |
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706 // while computing the next set. |
| 167 | 707 // |
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708 static void copy_deco_table(void) |
| 116 | 709 { |
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710 // Copy depth of the first (deepest) stop, because when reversing |
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711 // order, it will be hard to find... |
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712 char_O_first_deco_depth = internal_deco_depth[0]; |
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713 char_O_first_deco_time = internal_deco_time [0]; |
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714 |
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715 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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716 { |
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717 overlay unsigned char x, y; |
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718 |
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719 //---- First: search the first non-null depth |
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720 for(x=31; x != 0; --x) |
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721 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 722 |
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723 //---- Second: copy to output table (in reverse order) |
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724 for(y=0; y<32; y++, --x) |
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725 { |
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726 char_O_deco_depth[y] = internal_deco_depth[x]; |
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727 char_O_deco_time [y] = internal_deco_time [x]; |
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728 |
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729 // Stop only once the last transfer is done. |
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730 if( x == 0 ) break; |
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731 } |
| 116 | 732 |
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733 //---- Third: fill table end with null |
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734 for(y++; y<32; y++) |
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735 { |
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736 char_O_deco_time [y] = 0; |
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737 char_O_deco_depth[y] = 0; |
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738 } |
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739 } |
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740 else //---- Straight copy ------------------------------------------------ |
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741 { |
| 167 | 742 overlay unsigned char x; |
| 743 | |
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744 for(x=0; x<32; x++) |
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745 { |
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746 char_O_deco_depth[x] = internal_deco_depth[x]; |
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747 char_O_deco_time [x] = internal_deco_time [x]; |
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748 } |
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749 } |
| 167 | 750 } |
| 116 | 751 |
| 167 | 752 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 753 // temp_tissue_safety // |
| 167 | 754 // |
| 116 | 755 // outsourced in v.102 |
| 167 | 756 // |
| 757 // Apply safety factors for brand ZH-L16 model. | |
| 758 // | |
| 759 static void temp_tissue_safety(void) | |
| 116 | 760 { |
| 197 | 761 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 762 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 763 | |
| 167 | 764 if( char_I_deco_model == 0 ) |
| 116 | 765 { |
| 766 if (temp_tissue < 0.0) | |
| 126 | 767 temp_tissue *= float_desaturation_multiplier; |
| 116 | 768 else |
| 126 | 769 temp_tissue *= float_saturation_multiplier; |
| 116 | 770 } |
| 167 | 771 } |
| 116 | 772 |
| 167 | 773 ////////////////////////////////////////////////////////////////////////////// |
| 774 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 775 // ** THE JUMP-IN CODE ** |
| 776 // ** for the asm code ** | |
| 167 | 777 ////////////////////////////////////////////////////////////////////////////// |
| 778 ////////////////////////////////////////////////////////////////////////////// | |
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779 |
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780 void fillDataStack(void) |
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781 { |
| 184 | 782 #ifndef CROSS_COMPILE |
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783 _asm |
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784 LFSR 1,C_STACK |
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785 MOVLW 0xCC |
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786 loop: MOVWF POSTINC1,0 |
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787 TSTFSZ FSR1L,0 |
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788 BRA loop |
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789 |
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790 LFSR 1,C_STACK |
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791 LFSR 2,C_STACK |
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792 _endasm |
| 184 | 793 #endif |
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794 } |
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795 |
| 167 | 796 ////////////////////////////////////////////////////////////////////////////// |
|
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797 // When calling C code from ASM context, the data stack pointer and |
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798 // frames should be reset. Bank3 is dedicated to the stack (see the |
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799 // .lkr script). |
| 184 | 800 #ifdef CROSS_COMPILE |
| 801 # define RESET_C_STACK | |
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802 #else |
| 184 | 803 # ifdef __DEBUG |
| 804 # define RESET_C_STACK fillDataStack(); | |
| 805 # else | |
| 806 # define RESET_C_STACK \ | |
| 807 _asm \ | |
| 808 LFSR 1, C_STACK \ | |
| 809 LFSR 2, C_STACK \ | |
| 810 _endasm | |
| 811 # endif | |
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812 #endif |
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813 |
| 167 | 814 ////////////////////////////////////////////////////////////////////////////// |
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815 // Called every 2 seconds during diving. |
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816 // update tissues every time. |
| 184 | 817 // |
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818 // Every 6 seconds (or slower when TTS > 16): |
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819 // - update deco table (char_O_deco_time/depth) with new values. |
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820 // - update ascent time, |
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821 // - set status to zero (so we can check there is new results). |
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822 // |
| 116 | 823 void deco_calc_hauptroutine(void) |
| 824 { | |
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825 RESET_C_STACK |
| 116 | 826 calc_hauptroutine(); |
| 827 int_O_desaturation_time = 65535; | |
| 828 } | |
| 829 | |
| 167 | 830 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 831 // Reset decompression model: |
| 832 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 833 // + Reset last stop to 0m | |
| 834 // + Reset all model output. | |
| 116 | 835 void deco_clear_tissue(void) |
| 836 { | |
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837 RESET_C_STACK |
| 116 | 838 clear_tissue(); |
| 839 } | |
| 840 | |
| 167 | 841 ////////////////////////////////////////////////////////////////////////////// |
| 842 | |
| 116 | 843 void deco_calc_wo_deco_step_1_min(void) |
| 844 { | |
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845 RESET_C_STACK |
| 116 | 846 calc_wo_deco_step_1_min(); |
| 847 deco_calc_desaturation_time(); | |
| 848 } | |
| 849 | |
| 167 | 850 ////////////////////////////////////////////////////////////////////////////// |
| 851 | |
| 116 | 852 void deco_debug(void) |
| 853 { | |
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854 RESET_C_STACK |
| 116 | 855 } |
| 856 | |
| 167 | 857 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 858 // Find deepest available gas. |
| 201 | 859 // |
| 225 | 860 // Input: deco_gas_change[] |
| 212 | 861 // sim_gas_delay, sim_gas_last_used, sim_dive_mins. |
| 862 // | |
| 217 | 863 // Output: temp_depth_limit, sim_gas_delay, sim_gas_last_used IFF the is a switch. |
| 212 | 864 // |
| 217 | 865 static void deepest_gas_switch(void) |
| 201 | 866 { |
| 203 | 867 overlay unsigned char temp_gas_switch = 0; |
| 212 | 868 overlay unsigned char switch_deco = 0; |
| 201 | 869 |
| 870 if (char_I_const_ppO2 == 0) | |
| 871 { | |
| 225 | 872 overlay unsigned char j; |
| 873 | |
| 874 // Loop over all enabled gas, to find the deepest enabled one above us. | |
| 875 for(temp_gas_switch=j=0; j<5; ++j) | |
| 876 { | |
| 877 if( temp_depth_limit <= deco_gas_change[j] ) | |
| 878 if( (temp_gas_switch == 0) || (switch_deco < deco_gas_change[j]) ) | |
| 879 { | |
| 880 temp_gas_switch = j+1; | |
| 881 switch_deco = deco_gas_change[j]; | |
| 882 } | |
| 883 } | |
| 201 | 884 } |
| 885 | |
| 203 | 886 // If there is a better gas available |
| 887 if( temp_gas_switch ) | |
| 201 | 888 { |
| 212 | 889 // Should restart gas-switch delay only when gas do changes... |
| 203 | 890 // sim_gas_last_used: used to detect just once in each ascent simu. |
| 891 // N2_ratio : used to detect when already breathing that gas. | |
| 217 | 892 if( temp_depth_limit != switch_deco |
| 226 | 893 && sim_gas_last_used != temp_gas_switch |
| 217 | 894 && sim_gas_delay <= sim_dive_mins ) |
| 203 | 895 { |
| 896 sim_gas_last_used = temp_gas_switch; | |
| 897 sim_gas_delay = read_custom_function(55); | |
| 201 | 898 |
| 203 | 899 // Apply depth correction ONLY if CF#55 is not null: |
| 900 if( sim_gas_delay > 0 ) | |
| 901 { | |
| 902 sim_gas_delay += sim_dive_mins; | |
| 212 | 903 temp_depth_limit = switch_deco; |
| 203 | 904 } |
| 201 | 905 } |
| 906 } | |
| 203 | 907 else |
| 908 sim_gas_delay = 0; | |
| 217 | 909 } |
| 910 | |
| 911 ////////////////////////////////////////////////////////////////////////////// | |
| 912 // Find best (shallowest) available gas. | |
| 913 // | |
| 914 // Input: deco_gas_change* | |
| 915 // sim_gas_delay, sim_gas_last_used, sim_dive_mins. | |
| 916 // | |
| 917 // Output: temp_depth_limit, sim_gas_delay, sim_gas_last_used IFF the is a switch. | |
| 918 // | |
| 919 static void best_gas_switch(void) | |
| 920 { | |
| 921 overlay unsigned char temp_gas_switch = 0; | |
| 922 overlay unsigned char switch_deco = 0; | |
| 923 | |
| 924 if (char_I_const_ppO2 == 0) | |
| 925 { | |
| 225 | 926 overlay unsigned char j; |
| 927 | |
| 928 // Loop over all enabled gas, to find the shallowest enabled one above us. | |
| 929 for(temp_gas_switch=j=0; j<5; ++j) | |
| 930 { | |
| 931 if( temp_depth_limit <= deco_gas_change[j] ) | |
| 932 if( (temp_gas_switch == 0) || (switch_deco > deco_gas_change[j]) ) | |
| 933 { | |
| 934 temp_gas_switch = j+1; | |
| 935 switch_deco = deco_gas_change[j]; | |
| 936 } | |
| 937 } | |
| 217 | 938 } |
| 939 | |
| 940 // If there is a better gas available | |
| 941 if( temp_gas_switch ) | |
| 942 { | |
| 943 // Should restart gas-switch delay only when gas do changes... | |
| 944 // sim_gas_last_used: used to detect just once in each ascent simu. | |
| 945 // N2_ratio : used to detect when already breathing that gas. | |
| 226 | 946 if( sim_gas_last_used != temp_gas_switch |
| 217 | 947 && sim_gas_delay <= sim_dive_mins ) |
| 948 { | |
| 949 sim_gas_last_used = temp_gas_switch; | |
| 950 sim_gas_delay = read_custom_function(55); | |
| 951 | |
| 952 // Apply depth correction ONLY if CF#55 is not null: | |
| 953 if( sim_gas_delay > 0 ) | |
| 954 { | |
| 955 sim_gas_delay += sim_dive_mins; | |
| 956 temp_depth_limit = switch_deco; | |
| 957 } | |
| 958 } | |
| 959 } | |
| 960 else | |
| 961 sim_gas_delay = 0; | |
| 962 } | |
| 963 | |
| 964 ////////////////////////////////////////////////////////////////////////////// | |
| 965 // Calculate gas switches | |
| 966 // | |
| 967 // | |
| 968 // Input: N2_ratio, He_ratio. | |
| 969 // sim_gas_last_used | |
| 970 // | |
| 971 // Output: calc_N2_ratio, calc_He_ratio | |
| 972 // | |
| 973 static void set_gas(void) | |
| 974 { | |
| 224 | 975 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
| 217 | 976 |
| 224 | 977 if( sim_gas_last_used == 0 ) |
| 978 { | |
| 979 calc_N2_ratio = N2_ratio; | |
| 980 calc_He_ratio = He_ratio; | |
| 981 } | |
| 982 else | |
| 983 { | |
| 984 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 985 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 986 } |
| 201 | 987 |
| 988 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 989 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 990 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 991 } | |
| 992 | |
| 993 ////////////////////////////////////////////////////////////////////////////// | |
| 994 // | |
| 212 | 995 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 996 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 997 // Water-vapor pressure inside lumbs (ppWVapour). | |
| 998 // | |
| 999 // Output: ppO2, ppHe. | |
| 1000 // | |
| 1001 static void sim_alveolar_presures(void) | |
| 201 | 1002 { |
| 212 | 1003 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1004 | |
| 1005 //---- CCR mode : deco gas switch ? -------------------------------------- | |
| 201 | 1006 if (char_I_const_ppO2 != 0) |
| 1007 { | |
| 212 | 1008 // In CCR mode, calc_XX_ratio == XX_ratio. |
| 1009 if( temp_deco > deco_ppO2_change ) | |
| 1010 deco_diluent = ((temp_deco - const_ppO2)/(calc_N2_ratio + calc_He_ratio)); | |
| 201 | 1011 else |
| 212 | 1012 deco_diluent = ((temp_deco - deco_ppO2)/(calc_N2_ratio + calc_He_ratio)); |
| 1013 | |
| 1014 if (deco_diluent > temp_deco) | |
| 1015 deco_diluent = temp_deco; | |
| 201 | 1016 } |
| 1017 | |
| 212 | 1018 // Take deco offset into account, but not at surface. |
| 1019 if( deco_diluent > pres_surface ) | |
| 1020 deco_diluent += float_deco_distance; | |
| 1021 | |
| 1022 if( deco_diluent > ppWVapour ) | |
| 201 | 1023 { |
| 1024 ppO2 = calc_N2_ratio * (deco_diluent - ppWVapour); | |
| 1025 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); | |
| 1026 } | |
| 1027 else | |
| 1028 { | |
| 1029 ppO2 = 0.0; | |
| 1030 ppHe = 0.0; | |
| 1031 } | |
| 1032 assert( 0.0 <= ppO2 && ppO2 < 14.0 ); | |
| 1033 assert( 0.0 <= ppHe && ppHe < 14.0 ); | |
| 1034 } | |
| 1035 | |
| 1036 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1037 // clear_tissue |
| 1038 // | |
| 165 | 1039 // optimized in v.101 (var_N2_a) |
| 167 | 1040 // |
| 1041 // preload tissues with standard pressure for the given ambient pressure. | |
| 1042 // Note: fixed N2_ratio for standard air. | |
| 201 | 1043 // |
| 167 | 1044 static void clear_tissue(void) |
| 116 | 1045 { |
| 1046 flag_in_divemode = 0; | |
| 1047 int_O_DBS_bitfield = 0; | |
| 1048 int_O_DBS2_bitfield = 0; | |
| 1049 int_O_DBG_pre_bitfield = 0; | |
| 1050 int_O_DBG_post_bitfield = 0; | |
| 1051 char_O_NDL_at_20mtr = 255; | |
| 1052 | |
| 167 | 1053 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1054 N2_ratio = 0.7902; | |
| 212 | 1055 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1056 |
| 167 | 1057 for(ci=0; ci<16; ci++) |
| 126 | 1058 { |
| 197 | 1059 // cycle through the 16 Bühlmann tissues |
| 200 | 1060 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
| 164 | 1061 pres_tissue[ci] = p; |
| 197 | 1062 |
| 184 | 1063 read_buhlmann_coefficients(-1); |
| 165 | 1064 |
| 1065 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 1066 if( p < 0.0 ) |
| 1067 p = 0.0; | |
| 1068 pres_tissue_limit[ci] = p; | |
| 1069 | |
| 197 | 1070 // cycle through the 16 Bühlmann tissues for Helium |
| 167 | 1071 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1072 } // for 0 to 16 |
| 116 | 1073 |
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1074 clear_deco_table(); |
| 126 | 1075 char_O_deco_status = 0; |
| 1076 char_O_nullzeit = 0; | |
| 168 | 1077 int_O_ascenttime = 0; |
| 126 | 1078 char_O_gradient_factor = 0; |
| 1079 char_O_relative_gradient_GF = 0; | |
| 197 | 1080 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 1081 } |
| 116 | 1082 |
| 167 | 1083 ////////////////////////////////////////////////////////////////////////////// |
| 1084 // calc_hauptroutine | |
| 1085 // | |
| 1086 // this is the major code in dive mode calculates: | |
| 116 | 1087 // the tissues, |
| 167 | 1088 // the bottom time, |
| 1089 // and simulates the ascend with all deco stops. | |
| 171 | 1090 // |
| 1091 // The deco_state sequence is : | |
| 1092 // 3 (at surface) | |
| 1093 // +---> 0 : calc nullzeit | |
| 1094 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1095 // | +-> 1 : simulate up to 16min of stops. | |
| 1096 // | +------< not finished | |
| 1097 // +--------< finish | |
| 1098 // | |
| 167 | 1099 static void calc_hauptroutine(void) |
| 116 | 1100 { |
| 217 | 1101 static unsigned char backup_gas_used = 0; |
| 1102 static unsigned char backup_gas_delay = 0; | |
| 186 | 1103 |
| 116 | 1104 calc_hauptroutine_data_input(); |
| 1105 | |
| 1106 if(!flag_in_divemode) | |
| 1107 { | |
| 1108 flag_in_divemode = 1; | |
| 1109 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1110 } | |
| 1111 else | |
| 1112 check_pre_dbg(); | |
| 1113 | |
| 1114 calc_hauptroutine_update_tissues(); | |
| 1115 calc_gradient_factor(); | |
| 1116 | |
| 167 | 1117 // toggle between calculation for nullzeit (bottom time), |
| 1118 // deco stops | |
| 1119 // and more deco stops (continue) | |
| 1120 switch( char_O_deco_status ) | |
| 116 | 1121 { |
| 186 | 1122 case 3: //---- At surface: start a new dive ------------------------------ |
| 1123 clear_deco_table(); | |
| 1124 copy_deco_table(); | |
| 200 | 1125 int_O_ascenttime = 0; // Reset DTR. |
| 1126 char_O_nullzeit = 0; // Reset bottom time. | |
| 1127 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 201 | 1128 |
| 217 | 1129 // Values that should be reset just once for the full real dive. |
| 1130 // This is used to record the lowest stop for the whole dive, | |
| 1131 // Including ACCROSS all simulated ascent. | |
| 1132 low_depth = 0; | |
| 1133 | |
| 1134 // Reset gas switch history. | |
| 1135 backup_gas_used = sim_gas_last_used = 0; | |
| 1136 backup_gas_delay = sim_gas_delay = 0; | |
| 203 | 1137 sim_dive_mins = 0; |
| 1138 break; | |
| 186 | 1139 |
| 167 | 1140 case 0: //---- bottom time ----------------------------------------------- |
| 1141 calc_nullzeit(); | |
| 1142 check_ndl(); | |
| 186 | 1143 char_O_deco_status = 2; // calc ascent next time. |
| 1144 break; | |
| 1145 | |
| 1146 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 203 | 1147 // Check proposed gas at begin of ascent simulation |
| 1148 sim_dive_mins = int_I_divemins; // and time. | |
| 212 | 1149 temp_depth_limit = (int)(0.95 + (pres_respiration - pres_surface) / 0.09985) ; // Starts from current real depth. |
| 217 | 1150 best_gas_switch(); |
| 1151 set_gas(); | |
| 203 | 1152 |
| 1153 backup_gas_used = sim_gas_last_used;// And save for later simu steps. | |
| 1154 backup_gas_delay = sim_gas_delay; | |
| 186 | 1155 |
| 1156 sim_ascent_to_first_stop(); | |
| 201 | 1157 |
| 1158 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
| 167 | 1159 break; |
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1160 |
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1161 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1162 calc_hauptroutine_calc_deco(); |
| 186 | 1163 |
| 1164 // If simulation is finished, restore the GF low reference, so that | |
| 1165 // next ascent simulation is done from the current depth: | |
| 217 | 1166 if( char_O_deco_status == 0 ) |
| 186 | 1167 { |
| 201 | 1168 sim_gas_last_used = backup_gas_used; |
| 203 | 1169 sim_gas_delay = backup_gas_delay; |
| 186 | 1170 } |
| 167 | 1171 break; |
| 116 | 1172 } |
| 167 | 1173 |
| 116 | 1174 check_post_dbg(); |
| 1175 } | |
| 1176 | |
| 167 | 1177 ////////////////////////////////////////////////////////////////////////////// |
| 1178 // calc_hauptroutine_data_input | |
| 1179 // | |
| 1180 // Reset all C-code dive parameters from their ASM-code values. | |
| 1181 // Detect gas change condition. | |
| 1182 // | |
| 116 | 1183 void calc_hauptroutine_data_input(void) |
| 1184 { | |
| 203 | 1185 overlay short int_temp; |
| 126 | 1186 |
| 197 | 1187 pres_respiration = int_I_pres_respiration * 0.001; |
| 1188 pres_surface = int_I_pres_surface * 0.001; | |
| 1189 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1190 He_ratio = char_I_He_ratio * 0.01; | |
| 1191 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1192 |
| 126 | 1193 // ____________________________________________________ |
| 1194 // | |
| 1195 // _____________ G A S _ C H A N G E S ________________ | |
| 1196 // ____________________________________________________ | |
| 1197 | |
| 212 | 1198 // Keep a margin of 150mbar = 1.50m |
| 1199 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1200 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1201 |
| 225 | 1202 deco_gas_change[0] = 0; |
| 1203 deco_gas_change[1] = 0; | |
| 1204 deco_gas_change[2] = 0; | |
| 1205 deco_gas_change[3] = 0; | |
| 1206 deco_gas_change[4] = 0; | |
| 116 | 1207 |
| 203 | 1208 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1209 if(char_I_deco_gas_change[0]) |
| 126 | 1210 { |
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1211 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1212 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1213 } |
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1214 if(char_I_deco_gas_change[1]) |
| 126 | 1215 { |
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1216 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1217 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1218 } |
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1219 if(char_I_deco_gas_change[2]) |
| 126 | 1220 { |
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1221 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1222 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1223 } |
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1224 if(char_I_deco_gas_change[3]) |
| 126 | 1225 { |
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1226 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1227 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1228 } |
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1229 if(char_I_deco_gas_change[4]) |
| 126 | 1230 { |
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1231 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1232 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1233 } |
| 116 | 1234 |
| 197 | 1235 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1236 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
| 1237 + pres_surface | |
| 1238 + float_deco_distance; | |
| 1239 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1240 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1241 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1242 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1243 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1244 GF_delta = GF_high - GF_low; |
| 116 | 1245 } |
| 1246 | |
| 167 | 1247 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1248 // |
| 1249 // | |
| 116 | 1250 void calc_hauptroutine_update_tissues(void) |
| 1251 { | |
| 197 | 1252 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1253 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1254 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 1255 | |
| 1256 if (char_I_const_ppO2 == 0) // new in v.101 | |
| 167 | 1257 pres_diluent = pres_respiration; // new in v.101 |
| 186 | 1258 else |
| 1259 { | |
| 167 | 1260 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
| 186 | 1261 if (pres_diluent > pres_respiration) // new in v.101 |
| 1262 pres_diluent = pres_respiration; // new in v.101 | |
| 1263 } | |
| 200 | 1264 if (pres_diluent > ppWVapour) // new in v.101 |
| 116 | 1265 { |
| 200 | 1266 ppO2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 1267 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 | |
| 116 | 1268 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1269 } | |
| 167 | 1270 else // new in v.101 |
| 116 | 1271 { |
| 200 | 1272 ppO2 = 0.0; // new in v.101 |
| 1273 ppHe = 0.0; // new in v.101 | |
| 116 | 1274 char_O_diluent = 0; |
| 1275 } | |
| 1276 | |
| 1277 if(!char_I_step_is_1min) | |
| 192 | 1278 calc_tissue(0); |
| 116 | 1279 else |
| 192 | 1280 calc_tissue(1); |
| 186 | 1281 |
| 192 | 1282 // Calc limit for surface, ie. GF_high. |
| 1283 calc_limit(GF_high); | |
| 186 | 1284 |
| 203 | 1285 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 1286 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 192 | 1287 |
| 1288 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1289 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1290 { |
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1291 char_O_nullzeit = 0; // deco necessary |
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1292 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1293 } |
| 171 | 1294 } |
| 1295 | |
| 116 | 1296 |
| 167 | 1297 ////////////////////////////////////////////////////////////////////////////// |
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1298 // Compute stops. |
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1299 // |
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1300 // Note: because this can be very long, break on 16 iterations, and set state |
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1301 // to 0 when finished, or to 1 when needing to continue. |
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1302 // |
| 116 | 1303 void calc_hauptroutine_calc_deco(void) |
| 1304 { | |
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1305 overlay unsigned char loop; |
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1306 |
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1307 for(loop = 0; loop < 16; ++loop) |
| 116 | 1308 { |
| 212 | 1309 overlay float new_presure; |
| 1310 overlay unsigned char backup_gas_last_used; | |
| 1311 | |
| 197 | 1312 // Do not ascent while doing a gas switch. |
| 203 | 1313 if( sim_gas_delay <= sim_dive_mins ) |
| 1314 { | |
| 212 | 1315 backup_gas_last_used = sim_gas_last_used; |
| 197 | 1316 calc_nextdecodepth(); |
| 116 | 1317 |
| 203 | 1318 //---- Finish computations once surface is reached --------------- |
| 1319 if( temp_depth_limit == 0 ) | |
| 1320 { | |
| 1321 copy_deco_table(); | |
| 1322 calc_ascenttime(); | |
| 1323 char_O_deco_status = 0; // calc nullzeit next time. | |
| 1324 return; | |
| 1325 } | |
| 212 | 1326 } |
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1327 |
| 212 | 1328 //---- Can we ascent to that stop at once, or is it just ascenting ? |
| 1329 new_presure = temp_depth_limit * 0.09985 // Convert to relative bar, | |
| 1330 + pres_surface; // To absolute, | |
| 1331 | |
| 1332 if( (temp_deco - new_presure) > 1.0 ) // More than 10m/mn ? | |
| 1333 { | |
| 1334 temp_deco -= 1.0; // Just keep ascending. | |
| 1335 sim_gas_delay = 0; // Reset gas delay, | |
| 1336 sim_gas_last_used = backup_gas_last_used; // and usage history. | |
| 1337 } | |
| 1338 else | |
| 1339 { | |
| 1340 temp_deco = new_presure; | |
| 1341 update_deco_table(); // This is a one minute stops. | |
| 203 | 1342 } |
| 197 | 1343 |
| 203 | 1344 //---- Then update tissue and decoplan ------------------------------- |
| 1345 sim_dive_mins++; // Advance simulated time by 1 minute. | |
| 217 | 1346 set_gas(); // Apply any simulated gas change, once validated. |
| 212 | 1347 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1348 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1349 } |
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1350 |
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1351 // Surface not reached, need more stops... |
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1352 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1353 } |
| 1354 | |
| 167 | 1355 ////////////////////////////////////////////////////////////////////////////// |
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1356 // Simulation ascention to first deco stop. |
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1357 // |
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1358 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1359 // there is no need to break on more that 16 iterations |
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1360 // (or we are already in deep shit). |
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1361 // |
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1362 void sim_ascent_to_first_stop(void) |
| 116 | 1363 { |
| 171 | 1364 update_startvalues(); |
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1365 clear_deco_table(); |
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1366 |
| 200 | 1367 temp_deco = pres_respiration; // Starts from current real depth. |
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1368 |
| 212 | 1369 // Do we have a gas switch going on ? |
| 1370 if( sim_gas_delay > sim_dive_mins ) | |
| 1371 return; | |
| 1372 | |
| 203 | 1373 // Loop until first stop, gas switch, or surface is reached. |
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1374 for(;;) |
| 116 | 1375 { |
| 203 | 1376 // No: try ascending 1 full minute. |
| 1377 temp_deco -= 1.0; // Ascent 1 min, at 10m/min. == 1bar/min. | |
| 1378 | |
| 212 | 1379 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1380 sim_limit(GF_low); | |
| 1381 | |
| 1382 // Did we reach deepest remaining stop ? | |
| 1383 if( temp_deco <= sim_lead_tissue_limit ) | |
| 1384 { | |
| 1385 temp_deco += 1.0; // Restore last correct depth. | |
| 1386 break; // Return stop found ! | |
| 1387 } | |
| 1388 | |
| 203 | 1389 // Did we reach surface ? |
| 1390 if( temp_deco <= pres_surface ) | |
| 1391 { | |
| 1392 temp_deco = pres_surface; // Yes: finished ! | |
| 1393 break; | |
| 1394 } | |
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1395 |
| 212 | 1396 // Check gas change 5 meter below new depth. |
| 1397 temp_depth_limit = (temp_deco + 0.5 - pres_surface) / 0.09985; | |
| 217 | 1398 deepest_gas_switch(); |
| 212 | 1399 if( sim_gas_delay > sim_dive_mins ) |
| 1400 break; | |
| 171 | 1401 |
| 203 | 1402 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 212 | 1403 sim_alveolar_presures(); // Still uses temp_deco. |
| 203 | 1404 sim_tissue(1); // and update tissues for 1 min. |
| 1405 } | |
| 167 | 1406 } |
| 116 | 1407 |
| 167 | 1408 ////////////////////////////////////////////////////////////////////////////// |
| 1409 // calc_tissue | |
| 1410 // | |
| 116 | 1411 // optimized in v.101 |
| 167 | 1412 // |
| 184 | 1413 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1414 { |
| 126 | 1415 for (ci=0;ci<16;ci++) |
| 1416 { | |
| 184 | 1417 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1418 |
| 126 | 1419 // N2 |
| 200 | 1420 temp_tissue = (ppO2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1421 temp_tissue_safety(); |
| 167 | 1422 pres_tissue[ci] += temp_tissue; |
| 165 | 1423 |
| 126 | 1424 // He |
| 200 | 1425 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1426 temp_tissue_safety(); |
| 167 | 1427 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1428 } |
| 167 | 1429 } |
| 116 | 1430 |
| 167 | 1431 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1432 // calc_limit |
| 167 | 1433 // |
| 192 | 1434 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1435 // |
| 192 | 1436 static void calc_limit(PARAMETER float GF_current) |
| 167 | 1437 { |
| 192 | 1438 char_O_gtissue_no = 255; |
| 1439 calc_lead_tissue_limit = 0.0; | |
| 1440 | |
| 1441 for (ci=0;ci<16;ci++) | |
| 1442 { | |
| 1443 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1444 | |
| 1445 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
| 1446 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
| 1447 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1448 |
| 192 | 1449 // Apply the Eric Baker's varying gradient factor correction. |
| 1450 // Note: the correction factor depends both on GF and b, | |
| 1451 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1452 // so that can change who is the leading gas... | |
| 1453 // Note: Also depends of the GF. So the calcul is different for | |
| 1454 // GF_low, current GF, or GF_high... | |
| 1455 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1456 // hence what would happend at surface, | |
| 1457 // hence at GF_high. | |
| 1458 if( char_I_deco_model == 1 ) | |
| 1459 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1460 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1461 else | |
| 1462 p = (p - var_N2_a) * var_N2_b; | |
| 1463 if( p < 0 ) p = 0; | |
| 1464 | |
| 1465 pres_tissue_limit[ci] = p; | |
| 1466 if( p > calc_lead_tissue_limit ) | |
| 1467 { | |
| 1468 char_O_gtissue_no = ci; | |
| 1469 calc_lead_tissue_limit = p; | |
| 1470 } | |
| 1471 } | |
| 197 | 1472 |
| 1473 assert( char_O_gtissue_no < 16 ); | |
| 1474 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1475 } |
| 1476 | |
| 1477 ////////////////////////////////////////////////////////////////////////////// | |
| 1478 // calc_nullzeit | |
| 1479 // | |
| 1480 // calculates the remaining bottom time | |
| 1481 // | |
| 1482 // unchanged in v.101 | |
| 1483 // | |
| 1484 static void calc_nullzeit(void) | |
| 1485 { | |
| 203 | 1486 overlay unsigned char loop; |
| 200 | 1487 update_startvalues(); |
| 167 | 1488 |
| 116 | 1489 char_O_nullzeit = 0; |
| 167 | 1490 for(loop = 1; loop <= 17; loop++) |
| 116 | 1491 { |
| 1492 backup_sim_pres_tissue(); | |
| 197 | 1493 sim_tissue(2); // 10 min. |
| 192 | 1494 sim_limit(GF_high); |
| 167 | 1495 |
| 192 | 1496 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1497 { |
| 1498 restore_sim_pres_tissue(); | |
| 1499 break; | |
| 1500 } | |
| 1501 // Validate once we know its good. | |
| 1502 char_O_nullzeit += 10; | |
| 167 | 1503 } |
| 1504 | |
| 116 | 1505 if (char_O_nullzeit < 60) |
| 1506 { | |
| 167 | 1507 for(loop=1; loop <= 10; loop++) |
| 116 | 1508 { |
| 197 | 1509 sim_tissue(1); // 1 min |
| 192 | 1510 sim_limit(GF_high); |
| 1511 | |
| 1512 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1513 break; |
| 1514 char_O_nullzeit++; | |
| 167 | 1515 } |
| 185 | 1516 } |
| 1517 } | |
| 116 | 1518 |
| 167 | 1519 ////////////////////////////////////////////////////////////////////////////// |
| 1520 // backup_sim_pres_tissue | |
| 1521 // | |
| 116 | 1522 void backup_sim_pres_tissue(void) |
| 1523 { | |
| 167 | 1524 overlay unsigned char x; |
| 1525 | |
| 1526 for(x = 0; x<32; x++) | |
| 126 | 1527 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1528 } |
| 116 | 1529 |
| 167 | 1530 ////////////////////////////////////////////////////////////////////////////// |
| 1531 // restore_sim_pres_tissue | |
| 1532 // | |
| 116 | 1533 void restore_sim_pres_tissue(void) |
| 1534 { | |
| 167 | 1535 overlay unsigned char x; |
| 1536 | |
| 1537 for(x = 0; x<32; x++) | |
| 126 | 1538 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1539 } |
| 116 | 1540 |
| 167 | 1541 ////////////////////////////////////////////////////////////////////////////// |
| 1542 // calc_ascenttime | |
| 1543 // | |
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1544 static void calc_ascenttime(void) |
| 116 | 1545 { |
| 126 | 1546 if (pres_respiration > pres_surface) |
| 1547 { | |
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1548 overlay unsigned char x; |
| 168 | 1549 |
| 192 | 1550 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
| 1551 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
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1552 if (ascent < 0.0) |
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1553 ascent = 0.0; |
| 203 | 1554 int_O_ascenttime = (unsigned short)(ascent + 0.99); |
| 168 | 1555 |
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1556 for(x=0; x<32 && internal_deco_depth[x]; x++) |
| 203 | 1557 int_O_ascenttime += (unsigned short)internal_deco_time[x]; |
| 126 | 1558 } |
| 1559 else | |
| 168 | 1560 int_O_ascenttime = 0; |
| 167 | 1561 } |
| 116 | 1562 |
| 167 | 1563 ////////////////////////////////////////////////////////////////////////////// |
| 1564 // update_startvalues | |
| 1565 // | |
| 116 | 1566 // updated in v.102 |
| 167 | 1567 // |
| 116 | 1568 void update_startvalues(void) |
| 1569 { | |
| 167 | 1570 overlay unsigned char x; |
| 116 | 1571 |
| 201 | 1572 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1573 for (x = 0;x<16;x++) |
| 1574 { | |
| 1575 sim_pres_tissue[x] = pres_tissue[x]; | |
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1576 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1577 sim_pres_tissue_limit[x] = pres_tissue_limit[x]; |
| 1578 } | |
| 197 | 1579 |
| 201 | 1580 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1581 sim_lead_tissue_limit = 0.0; |
| 1582 sim_lead_tissue_no = 255; | |
| 167 | 1583 } |
| 116 | 1584 |
| 167 | 1585 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1586 // sim_tissue |
| 167 | 1587 // |
| 116 | 1588 // optimized in v.101 |
| 167 | 1589 // |
| 1590 // Function very simular to calc_tissue, but: | |
| 1591 // + Use a 1min or 10min period. | |
| 1592 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1593 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1594 { |
| 192 | 1595 for(ci=0; ci<16; ci++) |
| 126 | 1596 { |
| 184 | 1597 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1598 |
| 126 | 1599 // N2 |
| 200 | 1600 temp_tissue = (ppO2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1601 temp_tissue_safety(); |
| 167 | 1602 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1603 |
| 1604 // He | |
| 200 | 1605 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1606 temp_tissue_safety(); |
| 167 | 1607 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1608 } |
| 167 | 1609 } |
| 116 | 1610 |
| 167 | 1611 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1612 // sim_limit() |
| 1613 // | |
| 1614 // New in v.111 | |
| 1615 // | |
| 1616 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1617 // different depth, because it depends on current gradient factor. | |
| 167 | 1618 // |
| 192 | 1619 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1620 { |
| 212 | 1621 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1622 | |
| 192 | 1623 sim_lead_tissue_limit = 0.0; |
| 212 | 1624 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1625 |
| 1626 for(ci=0; ci<16; ci++) | |
| 1627 { | |
| 1628 overlay float p = sim_pres_tissue[ci] + (sim_pres_tissue+16)[ci]; | |
| 1629 | |
| 1630 read_buhlmann_coefficients(-1); | |
| 1631 var_N2_a = (var_N2_a * sim_pres_tissue[ci] + var_He_a * (sim_pres_tissue+16)[ci]) / p; | |
| 1632 var_N2_b = (var_N2_b * sim_pres_tissue[ci] + var_He_b * (sim_pres_tissue+16)[ci]) / p; | |
| 1633 | |
| 1634 // Apply the Eric Baker's varying gradient factor correction. | |
| 1635 // Note: the correction factor depends both on GF and b, | |
| 1636 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1637 // so that can change who is the leading gas... | |
| 1638 // Note: Also depends of the GF_current... | |
| 1639 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1640 // hence what would happend at surface, | |
| 1641 // hence at GF_high. | |
| 1642 if( char_I_deco_model == 1 ) | |
| 1643 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1644 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1645 else | |
| 1646 p = (p - var_N2_a) * var_N2_b; | |
| 1647 if( p < 0 ) p = 0; | |
| 1648 | |
| 1649 sim_pres_tissue_limit[ci] = p; | |
| 1650 if( p > sim_lead_tissue_limit ) | |
| 1651 { | |
| 1652 sim_lead_tissue_no = ci; | |
| 1653 sim_lead_tissue_limit = p; | |
| 1654 } | |
| 1655 } // for ci | |
| 197 | 1656 |
| 1657 assert( sim_lead_tissue_no < 16 ); | |
| 1658 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0); | |
| 167 | 1659 } |
| 116 | 1660 |
| 167 | 1661 ////////////////////////////////////////////////////////////////////////////// |
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1662 // clear_deco_table |
| 167 | 1663 // |
| 1664 // unchanged in v.101 | |
| 1665 // | |
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1666 static void clear_deco_table(void) |
| 116 | 1667 { |
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1668 overlay unsigned char x; |
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1669 |
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1670 for(x=0; x<32; ++x) |
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1671 { |
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1672 internal_deco_time [x] = 0; |
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1673 internal_deco_depth[x] = 0; |
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1674 } |
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1675 } |
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1676 |
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1677 ////////////////////////////////////////////////////////////////////////////// |
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1678 // update_deco_table |
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1679 // |
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1680 // Add 1 min to current stop. |
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1681 // |
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1682 // Inputs: |
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1683 // temp_depth_limit = stop's depth, in meters. |
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1684 // In/Out: |
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1685 // internal_deco_depth[] : depth (in meters) of each stops. |
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1686 // internal_deco_time [] : time (in minutes) of each stops. |
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1687 // |
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1688 static void update_deco_table() |
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1689 { |
| 192 | 1690 overlay unsigned char x; |
| 200 | 1691 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1692 |
| 192 | 1693 for(x=0; x<32; ++x) |
| 1694 { | |
| 212 | 1695 // Make sure deco-stops are recorded in order: |
| 1696 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
| 1697 | |
| 200 | 1698 if( internal_deco_depth[x] == temp_depth_limit ) |
| 192 | 1699 { |
| 1700 // Do not overflow (max 255') | |
| 1701 if( internal_deco_time[x] < 255 ) | |
| 1702 { | |
| 1703 internal_deco_time[x]++; | |
| 1704 return; | |
| 1705 } | |
| 1706 // But store extra in the next stop... | |
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1707 } |
| 192 | 1708 |
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1709 if( internal_deco_depth[x] == 0 ) |
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1710 { |
| 192 | 1711 internal_deco_depth[x] = temp_depth_limit; |
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1712 internal_deco_time[x] = 1; |
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1713 return; |
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1714 } |
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1715 } |
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1716 |
| 192 | 1717 // Can't store stops at more than 96m. |
| 1718 // Or stops at less that 3m too. | |
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1719 // Just do nothing with that... |
| 167 | 1720 } |
| 116 | 1721 |
| 167 | 1722 ////////////////////////////////////////////////////////////////////////////// |
| 1723 // calc_gradient_factor | |
| 1724 // | |
| 165 | 1725 // optimized in v.101 (var_N2_a) |
| 116 | 1726 // new code in v.102 |
| 167 | 1727 // |
| 1728 static void calc_gradient_factor(void) | |
| 116 | 1729 { |
| 197 | 1730 overlay float gf; |
| 1731 assert( char_O_gtissue_no < 16 ); | |
| 1732 | |
| 116 | 1733 // tissue > respiration (entsaettigungsvorgang) |
| 1734 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1735 // dh. 0% = respiration == tissue | |
| 1736 // dh. 100% = respiration == limit | |
| 197 | 1737 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
| 1738 if( temp_tissue < pres_respiration ) | |
| 1739 gf = 0.0; | |
| 1740 else | |
| 1741 { | |
| 1742 gf = (temp_tissue - pres_respiration) | |
| 1743 / (temp_tissue - pres_tissue_limit[char_O_gtissue_no]) | |
| 1744 * 100.0; | |
| 1745 if( gf > 255.0 ) gf = 255.0; | |
| 1746 if( gf < 0.0 ) gf = 0.0; | |
| 1747 } | |
| 1748 char_O_gradient_factor = (unsigned char)gf; | |
| 116 | 1749 |
| 1750 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1751 { | |
| 197 | 1752 overlay float rgf; |
| 1753 | |
| 1754 if( low_depth == 0 ) | |
| 1755 rgf = GF_high; | |
| 1756 else | |
| 1757 { | |
| 1758 overlay float temp1 = low_depth * 0.09995; | |
| 1759 overlay float temp2 = pres_respiration - pres_surface; | |
| 186 | 1760 |
| 197 | 1761 if (temp2 <= 0) |
| 1762 rgf = GF_high; | |
| 1763 else if (temp2 >= temp1) | |
| 1764 rgf = GF_low; | |
| 1765 else | |
| 1766 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1767 } | |
| 186 | 1768 |
| 197 | 1769 rgf = gf / rgf; // gf is already in percent |
| 1770 if( rgf < 0.0 ) rgf = 0.0; | |
| 1771 if( rgf > 255.0 ) rgf = 255.0; | |
| 1772 char_O_relative_gradient_GF = (unsigned char)rgf; | |
| 116 | 1773 } // calc relative gradient factor |
| 1774 else | |
| 1775 { | |
| 186 | 1776 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1777 } |
| 167 | 1778 } |
| 116 | 1779 |
| 167 | 1780 ////////////////////////////////////////////////////////////////////////////// |
| 1781 // deco_calc_desaturation_time | |
| 1782 // | |
| 116 | 1783 // FIXED N2_ratio |
| 1784 // unchanged in v.101 | |
| 233 | 1785 // Inputs: int_I_pres_surface, ppWVapour, char_I_desaturation_multiplier |
| 1786 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] | |
| 167 | 1787 // |
| 116 | 1788 void deco_calc_desaturation_time(void) |
| 1789 { | |
| 203 | 1790 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 200 | 1791 overlay float temp1; |
| 197 | 1792 overlay float temp2; |
| 1793 overlay float temp3; | |
| 1794 overlay float temp4; | |
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1795 RESET_C_STACK |
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1796 |
| 233 | 1797 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 1798 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 1799 | |
| 126 | 1800 N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann |
| 233 | 1801 pres_surface = int_I_pres_surface * 0.001; |
| 200 | 1802 ppO2 = N2_ratio * (pres_surface - ppWVapour); |
| 126 | 1803 int_O_desaturation_time = 0; |
| 1804 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 233 | 1805 |
| 126 | 1806 for (ci=0;ci<16;ci++) |
| 1807 { | |
| 200 | 1808 overlay float var_N2_halftime = buhlmann_ht[ci]; |
| 1809 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; | |
| 116 | 1810 |
| 126 | 1811 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1812 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1813 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1814 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1815 // N2 | |
| 200 | 1816 temp1 = 1.05 * ppO2; |
| 126 | 1817 temp1 = temp1 - pres_tissue[ci]; |
| 200 | 1818 temp2 = ppO2 - pres_tissue[ci]; |
| 126 | 1819 if (temp2 >= 0.0) |
| 1820 { | |
| 233 | 1821 temp1 = 0.0; |
| 1822 temp2 = 0.0; | |
| 126 | 1823 } |
| 1824 else | |
| 1825 temp1 = temp1 / temp2; | |
| 1826 if (temp1 > 0.0) | |
| 1827 { | |
| 1828 temp1 = log(1.0 - temp1); | |
| 1829 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1830 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1831 // minus because log is negative | |
| 165 | 1832 temp2 = var_N2_halftime * temp1 / float_desaturation_multiplier; // time necessary (in minutes ) for complete desaturation (see comment about 10 percent) , new in v.101: float_desaturation_multiplier |
| 126 | 1833 } |
| 1834 else | |
| 1835 { | |
| 233 | 1836 temp1 = 0.0; |
| 1837 temp2 = 0.0; | |
| 126 | 1838 } |
| 116 | 1839 |
| 126 | 1840 // He |
| 167 | 1841 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1842 if (temp3 >= 0.0) |
| 1843 { | |
| 233 | 1844 temp3 = 0.0; |
| 1845 temp4 = 0.0; | |
| 126 | 1846 } |
| 1847 else | |
| 167 | 1848 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 126 | 1849 if (temp3 > 0.0) |
| 1850 { | |
| 1851 temp3 = log(1.0 - temp3); | |
| 1852 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1853 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1854 // minus because log is negative | |
| 165 | 1855 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1856 } |
| 1857 else | |
| 1858 { | |
| 233 | 1859 temp3 = 0.0; |
| 1860 temp4 = 0.0; | |
| 126 | 1861 } |
| 116 | 1862 |
| 126 | 1863 // saturation_time (for flight) |
| 1864 if (temp4 > temp2) | |
| 203 | 1865 desat_time = (unsigned short)temp4; |
| 126 | 1866 else |
| 203 | 1867 desat_time = (unsigned short)temp2; |
| 167 | 1868 if(desat_time > int_O_desaturation_time) |
| 1869 int_O_desaturation_time = desat_time; | |
| 116 | 1870 |
| 126 | 1871 // N2 saturation in multiples of halftime for display purposes |
| 1872 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1873 temp2 = temp2 + 80.0; // set center | |
| 1874 if (temp2 < 0.0) | |
| 1875 temp2 = 0.0; | |
| 1876 if (temp2 > 255.0) | |
| 1877 temp2 = 255.0; | |
| 1878 char_O_tissue_saturation[ci] = (char)temp2; | |
| 233 | 1879 |
| 126 | 1880 // He saturation in multiples of halftime for display purposes |
| 1881 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1882 temp4 = temp4 + 80.0; // set center | |
| 1883 if (temp4 < 0.0) | |
| 1884 temp4 = 0.0; | |
| 1885 if (temp4 > 255.0) | |
| 1886 temp4 = 255.0; | |
| 167 | 1887 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1888 } // for |
| 167 | 1889 } |
| 116 | 1890 |
| 167 | 1891 ////////////////////////////////////////////////////////////////////////////// |
| 1892 // calc_wo_deco_step_1_min | |
| 1893 // | |
| 116 | 1894 // FIXED N2 Ratio |
| 1895 // optimized in v.101 (...saturation_multiplier) | |
| 1896 // desaturation slowed down to 70,42% | |
| 167 | 1897 // |
| 1898 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1899 { |
| 1900 if(flag_in_divemode) | |
| 1901 { | |
| 1902 flag_in_divemode = 0; | |
| 1903 set_dbg_end_of_dive(); | |
| 1904 } | |
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1905 |
| 126 | 1906 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 233 | 1907 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
| 1908 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
| 1909 ppO2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body | |
| 200 | 1910 ppHe = 0.0; |
| 126 | 1911 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 1912 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 1913 |
| 192 | 1914 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 1915 |
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1916 clear_deco_table(); |
| 200 | 1917 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 1918 char_O_nullzeit = 0; |
| 168 | 1919 int_O_ascenttime = 0; |
| 126 | 1920 calc_gradient_factor(); |
| 167 | 1921 } |
| 126 | 1922 |
| 167 | 1923 ////////////////////////////////////////////////////////////////////////////// |
| 1924 ////////////////////////////////////////////////////////////////////////////// | |
| 1925 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1926 ////////////////////////////////////////////////////////////////////////////// | |
| 1927 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1928 |
| 184 | 1929 #ifndef CROSS_COMPILE |
| 116 | 1930 void deco_hash(void) |
| 1931 { | |
| 167 | 1932 overlay unsigned char md_i, md_j; // Loop index. |
| 1933 overlay unsigned char md_t; | |
| 1934 overlay unsigned char md_buffer[16]; | |
| 1935 overlay unsigned char md_temp; | |
| 203 | 1936 overlay unsigned short md_pointer; |
| 167 | 1937 |
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1938 RESET_C_STACK |
| 126 | 1939 |
| 1940 // init | |
| 164 | 1941 for(md_i=0;md_i<16;md_i++) |
| 126 | 1942 { |
| 1943 md_state[md_i] = 0; | |
| 164 | 1944 char_O_hash[md_i] = 0; |
| 126 | 1945 } // for md_i 16 |
| 116 | 1946 |
| 126 | 1947 _asm |
| 167 | 1948 movlw 0x01 // md_pi address. |
| 1949 movwf TBLPTRU,0 | |
| 1950 movlw 0x7E | |
| 1951 movwf TBLPTRH,0 | |
| 1952 movlw 0x00 | |
| 1953 movwf TBLPTRL,0 | |
| 126 | 1954 _endasm; |
| 165 | 1955 md_i = 0; |
| 1956 do { | |
| 126 | 1957 _asm |
| 1958 TBLRDPOSTINC | |
| 1959 movff TABLAT,md_temp | |
| 1960 _endasm | |
| 165 | 1961 md_pi_subst[md_i++] = md_temp; |
| 1962 } while( md_i != 0 ); | |
| 1963 | |
| 126 | 1964 _asm |
| 167 | 1965 movlw 0x00 |
| 1966 movwf TBLPTRU,0 | |
| 1967 movlw 0x00 | |
| 1968 movwf TBLPTRH,0 | |
| 1969 movlw 0x00 | |
| 1970 movwf TBLPTRL,0 | |
| 126 | 1971 _endasm |
| 167 | 1972 |
| 126 | 1973 // cycle buffers |
| 1974 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 1975 { | |
| 1976 md_t = 0; | |
| 1977 for (md_i=0;md_i<16;md_i++) | |
| 1978 { | |
| 1979 if(md_pointer == 9) | |
| 164 | 1980 md_temp = char_O_hash[md_i]; |
| 126 | 1981 else |
| 1982 { | |
| 1983 _asm | |
| 167 | 1984 TBLRDPOSTINC |
| 1985 movff TABLAT,md_temp | |
| 126 | 1986 _endasm |
| 1987 } // else | |
| 167 | 1988 |
| 1989 md_buffer[md_i] = md_temp; | |
| 186 | 1990 md_state[md_i+16] = md_temp; |
| 1991 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 1992 } // for md_i 16 |
| 1993 | |
| 1994 for (md_i=0;md_i<18;md_i++) | |
| 1995 { | |
| 1996 for (md_j=0;md_j<48;md_j++) | |
| 1997 { | |
| 167 | 1998 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 1999 md_t = md_state[md_j]; |
| 2000 } // for md_j 48 | |
| 2001 md_t = (unsigned char)(md_t+1); | |
| 2002 } // for md_i 18 | |
| 164 | 2003 md_t = char_O_hash[15]; |
| 126 | 2004 |
| 2005 for (md_i=0;md_i<16;md_i++) | |
| 2006 { | |
| 167 | 2007 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2008 md_t = char_O_hash[md_i]; |
| 126 | 2009 } // for md_i 16 |
| 2010 } // for md_pointer | |
| 116 | 2011 } // void deco_hash(void) |
| 184 | 2012 #endif |
| 116 | 2013 |
| 167 | 2014 ////////////////////////////////////////////////////////////////////////////// |
| 2015 // deco_clear_CNS_fraction | |
| 2016 // | |
| 116 | 2017 // new in v.101 |
| 167 | 2018 // |
| 116 | 2019 void deco_clear_CNS_fraction(void) |
| 2020 { | |
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2021 RESET_C_STACK |
| 126 | 2022 CNS_fraction = 0.0; |
| 2023 char_O_CNS_fraction = 0; | |
| 167 | 2024 } |
| 116 | 2025 |
| 167 | 2026 ////////////////////////////////////////////////////////////////////////////// |
| 2027 // deco_calc_CNS_fraction | |
| 2028 // | |
| 116 | 2029 // new in v.101 |
| 2030 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 2031 // |
| 116 | 2032 // Input: char_I_actual_ppO2 |
| 2033 // Output: char_O_CNS_fraction | |
| 2034 // Uses and Updates: CNS_fraction | |
| 2035 // Uses: acutal_ppO2 | |
| 167 | 2036 // |
| 116 | 2037 void deco_calc_CNS_fraction(void) |
| 2038 { | |
| 167 | 2039 overlay float actual_ppO2; |
| 126 | 2040 RESET_C_STACK |
| 167 | 2041 |
| 126 | 2042 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 2043 |
| 126 | 2044 if (char_I_actual_ppO2 < 50) |
| 2045 CNS_fraction = CNS_fraction;// no changes | |
| 2046 else if (char_I_actual_ppO2 < 60) | |
| 2047 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 2048 else if (char_I_actual_ppO2 < 70) | |
| 2049 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 2050 else if (char_I_actual_ppO2 < 80) | |
| 2051 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 2052 else if (char_I_actual_ppO2 < 90) | |
| 2053 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 2054 else if (char_I_actual_ppO2 < 110) | |
| 2055 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 2056 else if (char_I_actual_ppO2 < 150) | |
| 2057 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 2058 else if (char_I_actual_ppO2 < 160) | |
| 2059 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 2060 else if (char_I_actual_ppO2 < 165) | |
| 2061 CNS_fraction = 0.000755 + CNS_fraction; // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity... Formula (A1) based on value for 1.55 and c=20 | |
| 2062 else if (char_I_actual_ppO2 < 170) | |
| 2063 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 2064 else if (char_I_actual_ppO2 < 175) | |
| 2065 CNS_fraction = 0.00136 + CNS_fraction; | |
| 2066 else if (char_I_actual_ppO2 < 180) | |
| 2067 CNS_fraction = 0.00180 + CNS_fraction; | |
| 2068 else if (char_I_actual_ppO2 < 185) | |
| 2069 CNS_fraction = 0.00237 + CNS_fraction; | |
| 2070 else if (char_I_actual_ppO2 < 190) | |
| 2071 CNS_fraction = 0.00310 + CNS_fraction; | |
| 2072 else if (char_I_actual_ppO2 < 195) | |
| 2073 CNS_fraction = 0.00401 + CNS_fraction; | |
| 2074 else if (char_I_actual_ppO2 < 200) | |
| 2075 CNS_fraction = 0.00517 + CNS_fraction; | |
| 2076 else if (char_I_actual_ppO2 < 230) | |
| 2077 CNS_fraction = 0.0209 + CNS_fraction; | |
| 2078 else | |
| 2079 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 2080 |
| 126 | 2081 if (CNS_fraction > 2.5) |
| 2082 CNS_fraction = 2.5; | |
| 2083 if (CNS_fraction < 0.0) | |
| 2084 CNS_fraction = 0.0; | |
| 2085 | |
| 2086 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2087 } |
| 116 | 2088 |
| 167 | 2089 ////////////////////////////////////////////////////////////////////////////// |
| 2090 // deco_calc_CNS_decrease_15min | |
| 2091 // | |
| 116 | 2092 // new in v.101 |
| 167 | 2093 // |
| 116 | 2094 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2095 // (Used in sleepmode, for low battery mode). |
| 167 | 2096 // |
| 116 | 2097 // Output: char_O_CNS_fraction |
| 2098 // Uses and Updates: CNS_fraction | |
| 167 | 2099 // |
| 116 | 2100 void deco_calc_CNS_decrease_15min(void) |
| 2101 { | |
|
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2102 RESET_C_STACK |
| 126 | 2103 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2104 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2105 } | |
| 116 | 2106 |
| 167 | 2107 ////////////////////////////////////////////////////////////////////////////// |
| 2108 // deco_calc_percentage | |
| 2109 // | |
| 116 | 2110 // new in v.101 |
| 167 | 2111 // |
| 116 | 2112 // calculates int_I_temp * char_I_temp / 100 |
| 2113 // output is int_I_temp | |
| 200 | 2114 // |
| 2115 // Used to compute NoFly remaining time. | |
|
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2116 // |
| 116 | 2117 void deco_calc_percentage(void) |
| 2118 { | |
|
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2119 RESET_C_STACK |
|
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2120 |
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2121 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
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2122 } |
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2123 |
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2124 |
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2125 ////////////////////////////////////////////////////////////////////////////// |
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2126 // deco_gas_volumes |
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2127 // |
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2128 // new in v.111 |
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2129 // |
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2130 // calculates volumes for each gas. |
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2131 // |
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2132 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
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2133 /// Gas list. First gas is the bottom gas. |
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2134 // decoplan (char_O_deco_depth, char_O_deco_time). |
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2135 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) |
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2136 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0). |
| 224 | 2137 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
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2138 // |
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2139 void deco_gas_volumes(void) |
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2140 { |
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2141 overlay float volumes[5]; |
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2142 overlay float ascent_usage; |
| 224 | 2143 overlay unsigned char i; |
|
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2144 RESET_C_STACK |
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2145 |
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2146 //---- initialize with bottom consumption -------------------------------- |
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2147 volumes[0] = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. |
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2148 * char_I_bottom_time // in minutes. |
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2149 * read_custom_function(56) // In deci-liter/minutes. |
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2150 * 0.1; // deci-liters --> liters. |
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2151 |
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2152 for(i=1; i<5; ++i) // Nothing yet... |
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2153 volumes[i] = 0.0; |
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2154 |
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2155 //---- Ascent usage ------------------------------------------------------ |
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2156 |
| 224 | 2157 ascent_usage = read_custom_function(57) * 0.1; // In litter/minutes. |
|
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2158 |
| 224 | 2159 // Usage up to the first stop: |
| 2160 // - computed at MAX depth (easier, safer), | |
|
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2161 // - with an ascent speed of 10m/min. |
| 224 | 2162 // - with ascent litter / minutes. |
|
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2163 // - still using bottom gas: |
| 224 | 2164 volumes[0] += (char_I_bottom_depth* 0.1 + 1.0) |
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2165 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 |
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2166 * ascent_usage; |
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2167 |
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2168 for(i=0; i<32 && char_O_deco_depth[i] > 0; ++i) |
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2169 { |
| 224 | 2170 overlay unsigned char j, gas; |
|
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2171 // Gas switch depth ? |
| 225 | 2172 for(gas=j=0; j<5; ++j) |
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2173 { |
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2174 if( char_O_deco_depth[i] <= char_I_deco_gas_change[j] ) |
| 224 | 2175 if( (gas == 0) || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 2176 gas = j; | |
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2177 } |
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2178 |
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2179 // usage during stop: |
| 224 | 2180 // Note: because first gas is not in there, increment gas+1 |
| 225 | 2181 volumes[gas] += (char_O_deco_depth[i]*0.1 + 1.0)// Use Psurface = 1.0 bar. |
| 2182 * char_O_deco_time[i] // in minutes. | |
| 2183 * ascent_usage | |
|
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2184 // Plus usage during ascent to the next stop, at 10m/min. |
| 225 | 2185 + (char_O_deco_depth[i]*0.1 + 1.0) |
| 2186 * (char_O_deco_depth[i] - char_O_deco_depth[i+1]) * 0.1 | |
| 2187 * ascent_usage; | |
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2188 } |
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2189 |
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2190 //---- convert results for the ASM interface ----------------------------- |
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2191 for(i=0; i<5; ++i) |
| 224 | 2192 if( volumes[i] > 6553.4 ) |
| 2193 int_O_gas_volumes[i] = 65535; | |
|
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2194 else |
| 224 | 2195 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
| 116 | 2196 } |
| 2197 | |
| 167 | 2198 ////////////////////////////////////////////////////////////////////////////// |
| 2199 | |
| 116 | 2200 void deco_push_tissues_to_vault(void) |
| 2201 { | |
| 167 | 2202 overlay unsigned char x; |
|
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2203 RESET_C_STACK |
| 167 | 2204 |
| 116 | 2205 cns_vault = CNS_fraction; |
| 167 | 2206 for (x=0;x<32;x++) |
| 2207 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2208 } |
| 167 | 2209 |
| 116 | 2210 void deco_pull_tissues_from_vault(void) |
| 2211 { | |
| 167 | 2212 overlay unsigned char x; |
|
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2213 RESET_C_STACK |
| 167 | 2214 |
| 116 | 2215 CNS_fraction = cns_vault; |
| 167 | 2216 for (x=0;x<32;x++) |
| 2217 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2218 } |
| 2219 | |
| 167 | 2220 ////////////////////////////////////////////////////////////////////////////// |
| 2221 // | |
| 184 | 2222 #ifndef CROSS_COMPILE |
| 2223 void main() {} | |
| 2224 #endif |