Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 212:275befc5f39d
Debug GF model (bug #11 & #12).
+ ASSERT stops should be computed in order (bug#11).
+ BUGFIX: Mark GF_low reference at actual first stop, not predicted one.
+ BUGFIX: sim_to_first_stop() stops BEFORE first stop, not after (bug#11).
+ BUGFIX: check that calc_nextdecodepth() don't ascent faster than 10m/mn (bug#11).
+ BUGFIX: calc_nextdecodepth() should check gas switch, too (bug#11).
+ let gas switch detection in depth/meter (not ambientPresure/mbar).
+ BUGFIX OCR mode: bad diluent value in sim_alveolar_pressure() (bug#11).
+ BUGFIX: add deco distance (offset) only to compartiment integration, not to B?hlmann or GF criterion.
+ BUGFIX: add margin one meter above gas switch depth (bug#12)
+ BUGFIX: When ascenting too fast, cancel gas switch delay and history (bug#11).
| author | JeanDo |
|---|---|
| date | Mon, 21 Feb 2011 22:36:48 +0100 |
| parents | 2d9af08ed0ac |
| children | c7e32ff65636 |
| 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. |
| 116 | 73 // |
| 167 | 74 // TODO: |
| 75 // + Allow to abort MD2 calculation (have to restart next time). | |
| 76 // | |
| 77 // Literature: | |
| 200 | 78 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 79 // 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 |
| 80 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 81 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 82 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 83 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 84 // |
| 85 // | |
| 116 | 86 |
| 87 // ********************* | |
| 88 // ** I N C L U D E S ** | |
| 89 // ********************* | |
| 90 #include <math.h> | |
| 167 | 91 |
| 192 | 92 // *********************************************** |
| 93 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 94 // *********************************************** | |
| 95 | |
| 96 #include "p2_definitions.h" | |
| 97 #include "shared_definitions.h" | |
| 98 | |
| 200 | 99 // Water vapour partial pressure in the lumb. |
| 100 static const float ppWVapour = 0.0627; | |
| 101 | |
| 167 | 102 // ************************* |
| 103 // ** P R O T O T Y P E S ** | |
| 104 // ************************* | |
| 105 | |
| 106 static void calc_hauptroutine(void); | |
| 107 static void calc_nullzeit(void); | |
| 108 | |
| 192 | 109 static void calc_tissue(PARAMETER unsigned char period); |
| 110 static void calc_limit(PARAMETER float GF_current); | |
| 111 | |
| 167 | 112 static void clear_tissue(void); |
| 113 static void calc_ascenttime(void); | |
| 114 static void update_startvalues(void); | |
|
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115 static void clear_deco_table(void); |
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116 static void update_deco_table(void); |
| 192 | 117 |
| 118 static void backup_sim_pres_tissue(void); | |
| 119 static void restore_sim_pres_tissue(void); | |
| 120 static void sim_tissue(PARAMETER unsigned char period); | |
| 121 static void sim_limit(PARAMETER float GF_current); | |
| 167 | 122 static void calc_gradient_factor(void); |
| 123 static void calc_wo_deco_step_1_min(void); | |
| 124 | |
| 125 static void calc_hauptroutine_data_input(void); | |
| 126 static void calc_hauptroutine_update_tissues(void); | |
| 127 static void calc_hauptroutine_calc_deco(void); | |
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128 static void sim_ascent_to_first_stop(void); |
| 167 | 129 |
| 212 | 130 static void check_gas_switch(void); |
| 171 | 131 static void calc_nextdecodepth(void); |
| 116 | 132 |
| 200 | 133 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 134 #pragma udata bank4=0x400 |
| 116 | 135 |
| 136 static float temp_limit; | |
| 137 static float GF_low; | |
| 138 static float GF_high; | |
| 139 static float GF_delta; | |
| 192 | 140 static unsigned char low_depth; // Depth of deepest stop |
| 141 static float locked_GF_step; // GF_delta / low_depth | |
| 142 | |
| 143 static unsigned char temp_depth_limit; | |
| 171 | 144 |
| 192 | 145 // Simulation context: used to predict ascent. |
| 146 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 147 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 148 |
| 192 | 149 // Real context: what we are doing now. |
| 150 static float calc_lead_tissue_limit; // | |
| 116 | 151 |
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152 static unsigned char internal_deco_time[32]; |
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153 static unsigned char internal_deco_depth[32]; |
| 116 | 154 |
| 155 static float cns_vault; | |
| 156 static float pres_tissue_vault[32]; | |
| 157 | |
| 163 | 158 //---- Bank 5 parameters ----------------------------------------------------- |
| 159 #pragma udata bank5=0x500 | |
| 160 | |
| 167 | 161 static unsigned char ci; |
| 116 | 162 static float pres_respiration; |
| 163 static float pres_surface; | |
| 164 static float temp_deco; | |
| 200 | 165 static float ppO2; |
| 166 static float ppHe; | |
| 116 | 167 static float temp_tissue; |
| 200 | 168 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 169 static float He_ratio; // Breathed gas helium ratio. | |
| 170 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 171 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 172 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 173 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 174 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 175 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 176 |
| 164 | 177 static float pres_diluent; // new in v.101 |
| 178 static float const_ppO2; // new in v.101 | |
| 179 static float deco_ppO2_change; // new in v.101 | |
| 180 static float deco_ppO2; // new in v.101 | |
| 116 | 181 |
| 200 | 182 static unsigned char sim_gas_last_used; // Last used gas, to detected a gas switch. |
| 203 | 183 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 184 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 185 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 186 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 187 static float CNS_fraction; // new in v.101 | |
| 188 static float float_saturation_multiplier; // new in v.101 | |
| 189 static float float_desaturation_multiplier; // new in v.101 | |
| 167 | 190 static float float_deco_distance; // new in v.101 |
| 191 static char flag_in_divemode; // new in v.108 | |
| 192 | |
| 212 | 193 static unsigned char deco_gas_change1; // new in v.101 |
| 194 static unsigned char deco_gas_change2; // new in v.109 | |
| 195 static unsigned char deco_gas_change3; // new in v.109 | |
| 196 static unsigned char deco_gas_change4; // new in v.109 | |
| 197 static unsigned char deco_gas_change5; // new in v.109 | |
| 167 | 198 |
| 199 static float deco_N2_ratio1; // new in v.101 | |
| 200 static float deco_He_ratio1; // new in v.101 | |
| 201 | |
| 202 | |
| 163 | 203 //---- Bank 6 parameters ----------------------------------------------------- |
| 204 #pragma udata bank6=0x600 | |
| 116 | 205 |
| 197 | 206 float pres_tissue[32]; |
| 207 float pres_tissue_limit[16]; | |
| 208 float sim_pres_tissue_limit[16]; | |
| 116 | 209 |
| 163 | 210 //---- Bank 7 parameters ----------------------------------------------------- |
| 211 #pragma udata bank7=0x700 | |
| 212 | |
| 197 | 213 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
| 116 | 214 static float sim_pres_tissue_backup[32]; |
| 215 | |
| 163 | 216 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 217 #pragma udata bank8=0x800 |
| 163 | 218 |
| 116 | 219 static char md_pi_subst[256]; |
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220 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 221 |
| 163 | 222 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 223 #pragma udata bank9=0x900 |
| 116 | 224 |
| 163 | 225 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 226 |
| 164 | 227 // internal, dbg: |
| 167 | 228 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 229 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 230 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 164 | 231 static float DBG_pres_surface; // new in v.108 |
| 232 static float DBG_GF_low; // new in v.108 | |
| 233 static float DBG_GF_high; // new in v.108 | |
| 234 static float DBG_const_ppO2; // new in v.108 | |
| 235 static float DBG_deco_ppO2_change; // new in v.108 | |
| 236 static float DBG_deco_ppO2; // new in v.108 | |
| 237 static float DBG_deco_N2_ratio; // new in v.108 | |
| 238 static float DBG_deco_He_ratio; // new in v.108 | |
| 239 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 240 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 241 static float DBG_float_deco_distance; // new in v.108 | |
| 242 static float DBG_deco_N2_ratio; // new in v.108 | |
| 243 static float DBG_deco_He_ratio; // new in v.108 | |
| 244 static float DBG_N2_ratio; // new in v.108 | |
| 245 static float DBG_He_ratio; // new in v.108 | |
| 246 | |
| 167 | 247 ////////////////////////////////////////////////////////////////////////////// |
| 248 ////////////////////////////////////////////////////////////////////////////// | |
| 249 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 250 ////////////////////////////////////////////////////////////////////////////// | |
| 251 ////////////////////////////////////////////////////////////////////////////// | |
| 252 // | |
| 253 // End of PROM code is 17F00, So push tables on PROM top... | |
| 254 // | |
| 255 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 256 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 257 |
| 167 | 258 // Magic table to compute the MD2 HASH |
| 259 // | |
| 260 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 261 rom const rom unsigned short md_pi[] = |
| 116 | 262 { |
| 263 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 264 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 265 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 266 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 267 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 268 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 269 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 270 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 271 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 272 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 273 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 274 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 275 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 276 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 277 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 278 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 279 }; | |
| 280 | |
| 167 | 281 ////////////////////////////////////////////////////////////////////////////// |
| 282 ////////////////////////////////////////////////////////////////////////////// | |
| 283 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 284 ////////////////////////////////////////////////////////////////////////////// | |
| 285 ////////////////////////////////////////////////////////////////////////////// | |
| 286 // | |
| 116 | 287 // all new in v.102 |
| 288 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 289 | |
| 290 #pragma code p2_deco = 0x0C000 | |
| 291 | |
| 167 | 292 ////////////////////////////////////////////////////////////////////////////// |
| 293 // DBS - debug on start of dive | |
| 294 // | |
| 295 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 296 { |
| 167 | 297 overlay char i; // Local loop index. |
| 298 | |
| 299 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 300 int_O_DBS_bitfield = 0; |
| 301 int_O_DBS2_bitfield = 0; | |
| 302 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 303 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 304 else | |
| 305 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 306 int_O_DBG_post_bitfield = 0; | |
| 167 | 307 |
| 308 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 309 char_O_NDL_at_20mtr = 255; |
| 310 | |
| 167 | 311 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 312 DBG_N2_ratio = N2_ratio; |
| 313 DBG_He_ratio = He_ratio; | |
| 314 DBG_char_I_deco_model = char_I_deco_model; | |
| 315 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 316 DBG_pres_surface = pres_surface; | |
| 317 DBG_GF_low = GF_low; | |
| 318 DBG_GF_high = GF_high; | |
| 319 DBG_const_ppO2 = const_ppO2; | |
| 320 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 321 DBG_deco_ppO2 = deco_ppO2; | |
| 167 | 322 DBG_deco_N2_ratio = deco_N2_ratio1; |
| 323 DBG_deco_He_ratio = deco_He_ratio1; | |
| 324 DBG_deco_gas_change = deco_gas_change1; | |
| 116 | 325 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 326 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 327 DBG_float_deco_distance = float_deco_distance; | |
| 328 | |
| 167 | 329 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 330 if(char_I_deco_model) |
| 331 int_O_DBS_bitfield |= DBS_mode; | |
| 332 if(const_ppO2) | |
| 333 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 334 for(i = 16; i < 32; i++) |
| 335 if(pres_tissue[i]) | |
| 116 | 336 int_O_DBS_bitfield |= DBS_HE_sat; |
| 337 if(deco_ppO2_change) | |
| 338 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 339 if(float_saturation_multiplier < 0.99) | |
| 340 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 341 if(float_saturation_multiplier > 1.3) | |
| 342 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 343 if(GF_low < 0.19) | |
| 344 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 345 if(GF_low > 1.01) | |
| 346 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 347 if(GF_high < 0.6) | |
| 348 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 349 if(GF_high > 1.01) | |
| 350 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 351 if((N2_ratio + He_ratio) > 0.95) | |
| 352 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 353 if((N2_ratio + He_ratio) < 0.05) | |
| 354 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 355 if(float_deco_distance > 0.25) | |
| 356 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 357 if(char_I_depth_last_deco > 8) | |
| 358 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 167 | 359 if(DBG_deco_gas_change && ((deco_N2_ratio1 + deco_He_ratio1) > 0.95)) |
| 116 | 360 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 167 | 361 if(DBG_deco_gas_change && ((deco_N2_ratio1 + deco_He_ratio1) < 0.05)) |
| 116 | 362 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 363 if(pres_respiration > 3.0) | |
| 364 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 365 if(pres_surface - pres_respiration > 0.2) | |
| 366 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 367 if(pres_surface < 0.75) | |
| 368 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 369 if(pres_surface > 1.11) | |
| 370 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 371 if(float_desaturation_multiplier < 0.70) | |
| 372 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 373 if(float_desaturation_multiplier > 1.01) | |
| 374 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 375 if(GF_low > GF_high) | |
| 376 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 377 } | |
| 378 | |
| 167 | 379 ////////////////////////////////////////////////////////////////////////////// |
| 380 // DBG - set DBG to end_of_dive | |
| 381 // | |
| 382 static void set_dbg_end_of_dive(void) | |
| 116 | 383 { |
| 384 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 385 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 386 } | |
| 387 | |
| 167 | 388 ////////////////////////////////////////////////////////////////////////////// |
| 389 // DBG - NDL at first 20 m. hit | |
| 390 // | |
| 391 static void check_ndl(void) | |
| 116 | 392 { |
| 167 | 393 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 394 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 395 ) | |
| 116 | 396 { |
| 167 | 397 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 398 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 399 char_O_NDL_at_20mtr = 254; |
| 116 | 400 } |
| 401 } | |
| 402 | |
| 167 | 403 ////////////////////////////////////////////////////////////////////////////// |
| 404 // DBG - multi main during dive | |
| 405 // | |
| 184 | 406 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 407 { |
| 203 | 408 overlay unsigned short temp_DBS = 0; |
| 200 | 409 overlay unsigned char i; // Local loop index. |
| 167 | 410 |
| 116 | 411 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 412 temp_DBS |= DBG_c_gas; | |
| 413 if(DBG_const_ppO2 != const_ppO2) | |
| 414 temp_DBS |= DBG_c_ppO2; | |
| 167 | 415 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 416 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 417 ) | |
| 116 | 418 temp_DBS |= DBG_CdeSAT; |
| 419 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 420 temp_DBS |= DBG_C_MODE; | |
| 421 if(DBG_pres_surface != pres_surface) | |
| 422 temp_DBS |= DBG_C_SURF; | |
| 167 | 423 |
| 424 if( !DBS_HE_sat && !He_ratio) | |
| 425 for(i = 16; i < 32; i++) | |
| 426 if(pres_tissue[i]) | |
| 116 | 427 temp_DBS |= DBG_HEwoHE; |
| 167 | 428 |
| 116 | 429 if(DBG_deco_ppO2 != deco_ppO2) |
| 430 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 431 |
| 432 if( DBG_deco_gas_change != deco_gas_change1 | |
| 433 || DBG_deco_N2_ratio != deco_N2_ratio1 | |
| 434 || DBG_deco_He_ratio != deco_He_ratio1 ) | |
| 116 | 435 temp_DBS |= DBG_C_DGAS; |
| 167 | 436 |
| 116 | 437 if(DBG_float_deco_distance != float_deco_distance) |
| 438 temp_DBS |= DBG_C_DIST; | |
| 439 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 440 temp_DBS |= DBG_C_LAST; | |
| 167 | 441 if( DBG_GF_low != GF_low |
| 442 || DBG_GF_high != GF_high ) | |
| 116 | 443 temp_DBS |= DBG_C_GF; |
| 444 if(pres_respiration > 13.0) | |
| 445 temp_DBS |= DBG_PHIGH; | |
| 446 if(pres_surface - pres_respiration > 0.2) | |
| 447 temp_DBS |= DBG_PLOW; | |
| 448 if(is_post_check) | |
| 449 int_O_DBG_post_bitfield |= temp_DBS; | |
| 450 else | |
| 451 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 452 } | |
| 453 | |
| 167 | 454 ////////////////////////////////////////////////////////////////////////////// |
| 455 // DBG - prior to calc. of dive | |
| 456 // | |
| 457 static void check_pre_dbg(void) | |
| 116 | 458 { |
| 459 check_dbg(0); | |
| 460 } | |
| 461 | |
| 167 | 462 ////////////////////////////////////////////////////////////////////////////// |
| 463 // DBG - after decocalc of dive | |
| 464 // | |
| 465 static void check_post_dbg(void) | |
| 116 | 466 { |
| 467 check_dbg(1); | |
| 468 } | |
| 469 | |
| 165 | 470 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 471 ////////////////////////////////////////////////////////////////////////////// |
| 472 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 473 ////////////////////////////////////////////////////////////////////////////// | |
| 474 ////////////////////////////////////////////////////////////////////////////// | |
| 475 | |
| 203 | 476 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 477 { |
| 184 | 478 #ifdef CROSS_COMPILE |
| 479 extern unsigned short custom_functions[]; | |
| 480 return custom_functions[cf]; | |
| 481 #else | |
| 167 | 482 extern unsigned char hi, lo; |
| 483 extern void getcustom15(); | |
| 484 _asm | |
| 485 movff cf,WREG | |
| 486 call getcustom15,0 | |
| 487 movff lo,PRODL | |
| 488 movff hi,PRODH | |
| 489 _endasm | |
| 184 | 490 #endif |
| 167 | 491 } |
| 492 | |
| 493 ////////////////////////////////////////////////////////////////////////////// | |
| 165 | 494 // read buhlmann tables for compatriment ci |
| 167 | 495 // If period == 0 : 2sec interval |
| 496 // 1 : 1 min interval | |
| 497 // 2 : 10 min interval. | |
| 184 | 498 static void read_buhlmann_coefficients(PARAMETER char period) |
| 165 | 499 { |
| 184 | 500 #ifndef CROSS_COMPILE |
| 167 | 501 // Note: we don't use far rom pointer, because the |
| 502 // 24 bits is to complex, hence we have to set | |
| 503 // the UPPER page ourself... | |
| 504 // --> Set zero if tables are moved to lower pages ! | |
| 505 _asm | |
| 506 movlw 1 | |
| 507 movwf TBLPTRU,0 | |
| 508 _endasm | |
| 184 | 509 #endif |
| 197 | 510 assert( 0 <= ci && ci < 16 ); |
| 167 | 511 |
| 165 | 512 var_N2_a = buhlmann_a[ci]; |
| 513 var_N2_b = buhlmann_b[ci]; | |
| 167 | 514 var_He_a = (buhlmann_a+16)[ci]; |
| 515 var_He_b = (buhlmann_b+16)[ci]; | |
| 516 | |
| 165 | 517 // Check reading consistency: |
| 518 if( (var_N2_a < 0.231) | |
| 519 || (var_N2_a > 1.27) | |
| 520 || (var_N2_b < 0.504) | |
| 521 || (var_N2_b > 0.966) | |
| 522 || (var_He_a < 0.510) | |
| 523 || (var_He_a > 1.75) | |
| 524 || (var_He_b < 0.423) | |
| 525 || (var_He_b > 0.927) | |
| 526 ) | |
| 527 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 167 | 528 |
| 165 | 529 // Integration intervals. |
| 167 | 530 switch(period) |
| 165 | 531 { |
| 167 | 532 case -1://---- no interval ----------------------------------------------- |
| 533 var_N2_e = var_He_e = 0.0; | |
| 534 break; | |
| 535 | |
| 165 | 536 case 0: //---- 2 sec ----------------------------------------------------- |
| 537 var_N2_e = e2secs[ci]; | |
| 167 | 538 var_He_e = (e2secs+16)[ci]; |
| 165 | 539 |
| 540 // Check reading consistency: | |
| 541 if( (var_N2_e < 0.0000363) | |
| 542 || (var_N2_e > 0.00577) | |
| 543 || (var_He_e < 0.0000961) | |
| 544 || (var_He_e > 0.150) | |
| 545 ) | |
| 546 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 547 | |
| 548 break; | |
| 549 | |
| 550 case 1: //---- 1 min ----------------------------------------------------- | |
| 551 var_N2_e = e1min[ci]; | |
| 167 | 552 var_He_e = (e1min+16)[ci]; |
| 165 | 553 |
| 554 // Check reading consistency: | |
| 555 if( (var_N2_e < 1.09E-3) | |
| 556 || (var_N2_e > 0.1592) | |
| 557 || (var_He_e < 0.00288) | |
| 558 || (var_He_e > 0.3682) | |
| 559 ) | |
| 560 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 561 | |
| 562 break; | |
| 563 | |
| 564 case 2: //---- 10 min ---------------------------------------------------- | |
| 565 var_N2_e = e10min[ci]; | |
| 167 | 566 var_He_e = (e10min+16)[ci]; |
| 165 | 567 |
| 568 // Check reading consistency: | |
| 569 if( (var_N2_e < 0.01085) | |
| 570 || (var_N2_e > 0.82323) | |
| 571 || (var_He_e < 0.02846) | |
| 572 || (var_He_e > 0.98986) | |
| 573 ) | |
| 574 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 575 | |
| 576 break; | |
| 197 | 577 |
| 578 default: | |
| 579 assert(0); // Never go there... | |
| 165 | 580 } |
| 581 } | |
| 582 | |
| 583 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 584 // calc_next_decodepth_GF |
| 165 | 585 // |
| 116 | 586 // new in v.102 |
| 165 | 587 // |
| 116 | 588 // INPUT, changing during dive: |
| 192 | 589 // low_depth |
| 167 | 590 // |
| 116 | 591 // INPUT, fixed during dive: |
| 167 | 592 // pres_surface |
| 593 // GF_delta | |
| 594 // GF_high | |
| 595 // GF_low | |
| 171 | 596 // char_I_depth_last_deco |
| 167 | 597 // float_deco_distance |
| 598 // | |
| 116 | 599 // OUTPUT |
| 171 | 600 // locked_GF_step |
| 167 | 601 // temp_depth_limt |
| 192 | 602 // low_depth |
| 167 | 603 // |
| 171 | 604 static void calc_nextdecodepth(void) |
| 167 | 605 { |
| 212 | 606 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 607 if (char_I_deco_model == 1) |
| 608 { | |
| 192 | 609 // Recompute leading gas limit, at current depth: |
| 610 overlay float depth = (temp_deco - pres_surface) / 0.09995; | |
| 611 assert( depth >= 0.0 ); | |
| 203 | 612 assert( low_depth < 255 ); |
| 167 | 613 |
| 192 | 614 if( depth > low_depth ) |
| 615 sim_limit( GF_low ); | |
| 616 else | |
| 617 sim_limit( GF_high - depth * locked_GF_step ); | |
| 618 | |
| 619 // Stops are needed ? | |
| 620 if( sim_lead_tissue_limit > pres_surface ) | |
| 621 { | |
| 622 // Deepest stop, in meter. | |
| 203 | 623 overlay unsigned char first_stop = 3 * (short)(0.99 + (sim_lead_tissue_limit - pres_surface) / 0.29985); |
| 192 | 624 assert( first_stop < 128 ); |
| 171 | 625 |
| 212 | 626 // Apply correction for the shallowest stop. |
| 192 | 627 if( first_stop == 3 ) // new in v104 |
| 628 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 629 |
| 192 | 630 // Check all stops until one is higher than tolerated presure |
| 631 while(first_stop > 0) | |
| 632 { | |
| 633 overlay unsigned char next_stop; // Next index (0..30) | |
| 634 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 635 |
| 192 | 636 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 637 next_stop = 0; | |
| 638 else | |
| 639 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 640 if( first_stop == 3 ) | |
| 641 first_stop = char_I_depth_last_deco; | |
| 167 | 642 |
| 192 | 643 pres_stop = next_stop * 0.09995 // Meters to bar |
| 644 + pres_surface; | |
| 645 | |
| 212 | 646 // Keep GF_low until a first stop depth is found: |
| 647 if( next_stop >= low_depth ) | |
| 648 sim_limit( GF_low ); | |
| 649 else | |
| 650 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 651 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 652 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 653 |
| 192 | 654 // upper limit (lowest pressure tolerated): |
| 655 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 656 break; | |
| 657 | |
| 658 // Else, validate that stop and loop... | |
| 659 first_stop = next_stop; | |
| 660 } | |
| 171 | 661 |
| 212 | 662 // Is it a new deepest first stop ? If yes this is the reference for |
| 663 // the varying gradient factor. So reset that: | |
| 664 if( first_stop > low_depth ) | |
| 665 { | |
| 666 // Store the deepest stop depth, as reference for GF_low. | |
| 667 low_depth = first_stop; | |
| 668 locked_GF_step = GF_delta / low_depth; | |
| 669 } | |
| 670 | |
| 671 // next stop is the last validated depth found, aka first_stop | |
| 192 | 672 temp_depth_limit = first_stop; // Stop depth, in meter. |
| 673 } | |
| 171 | 674 else |
| 192 | 675 temp_depth_limit = 0; // stop depth, in meter. |
| 116 | 676 } |
| 167 | 677 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 678 { |
| 192 | 679 overlay float pres_gradient; |
| 680 | |
| 681 // Original model | |
| 116 | 682 // optimized in v.101 |
| 171 | 683 // char_I_depth_last_deco included in v.101 |
| 116 | 684 |
| 192 | 685 // Compute sim_lead_tissue_limit too, but just once. |
| 686 sim_limit(1.0); | |
| 687 | |
| 688 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 689 if (pres_gradient >= 0) |
| 116 | 690 { |
| 192 | 691 pres_gradient /= 0.29985; // Bar --> stop number; |
| 203 | 692 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> meter : depth for deco |
| 212 | 693 if (temp_depth_limit != 0) // At surface ? |
| 116 | 694 { |
| 171 | 695 if (temp_depth_limit < char_I_depth_last_deco) // Implement last stop at 4m/5m/6m... |
| 696 temp_depth_limit = char_I_depth_last_deco; | |
| 697 } | |
| 698 } | |
| 116 | 699 else |
| 192 | 700 temp_depth_limit = 0; // stop depth, in meter. |
| 171 | 701 } |
| 212 | 702 |
| 703 //---- Check gas change -------------------------------------------------- | |
| 704 check_gas_switch(); // Update temp_depth_limit if there is a change, | |
| 705 // Calculate N2_ratio and He_ratio too. | |
| 167 | 706 } |
| 116 | 707 |
| 167 | 708 ////////////////////////////////////////////////////////////////////////////// |
|
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709 // copy_deco_table |
| 167 | 710 // |
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711 // Buffer the stops, once computed, so we can continue to display them |
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712 // while computing the next set. |
| 167 | 713 // |
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714 static void copy_deco_table(void) |
| 116 | 715 { |
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716 // Copy depth of the first (deepest) stop, because when reversing |
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717 // order, it will be hard to find... |
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718 char_O_first_deco_depth = internal_deco_depth[0]; |
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719 char_O_first_deco_time = internal_deco_time [0]; |
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720 |
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721 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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722 { |
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723 overlay unsigned char x, y; |
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724 |
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725 //---- First: search the first non-null depth |
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726 for(x=31; x != 0; --x) |
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727 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 728 |
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729 //---- Second: copy to output table (in reverse order) |
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730 for(y=0; y<32; y++, --x) |
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731 { |
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732 char_O_deco_depth[y] = internal_deco_depth[x]; |
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733 char_O_deco_time [y] = internal_deco_time [x]; |
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734 |
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735 // Stop only once the last transfer is done. |
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736 if( x == 0 ) break; |
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737 } |
| 116 | 738 |
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739 //---- Third: fill table end with null |
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740 for(y++; y<32; y++) |
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741 { |
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742 char_O_deco_time [y] = 0; |
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743 char_O_deco_depth[y] = 0; |
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744 } |
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745 } |
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746 else //---- Straight copy ------------------------------------------------ |
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747 { |
| 167 | 748 overlay unsigned char x; |
| 749 | |
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750 for(x=0; x<32; x++) |
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751 { |
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752 char_O_deco_depth[x] = internal_deco_depth[x]; |
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753 char_O_deco_time [x] = internal_deco_time [x]; |
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754 } |
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755 } |
| 167 | 756 } |
| 116 | 757 |
| 167 | 758 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 759 // temp_tissue_safety // |
| 167 | 760 // |
| 116 | 761 // outsourced in v.102 |
| 167 | 762 // |
| 763 // Apply safety factors for brand ZH-L16 model. | |
| 764 // | |
| 765 static void temp_tissue_safety(void) | |
| 116 | 766 { |
| 197 | 767 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 768 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 769 | |
| 167 | 770 if( char_I_deco_model == 0 ) |
| 116 | 771 { |
| 772 if (temp_tissue < 0.0) | |
| 126 | 773 temp_tissue *= float_desaturation_multiplier; |
| 116 | 774 else |
| 126 | 775 temp_tissue *= float_saturation_multiplier; |
| 116 | 776 } |
| 167 | 777 } |
| 116 | 778 |
| 167 | 779 ////////////////////////////////////////////////////////////////////////////// |
| 780 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 781 // ** THE JUMP-IN CODE ** |
| 782 // ** for the asm code ** | |
| 167 | 783 ////////////////////////////////////////////////////////////////////////////// |
| 784 ////////////////////////////////////////////////////////////////////////////// | |
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785 |
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786 void fillDataStack(void) |
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787 { |
| 184 | 788 #ifndef CROSS_COMPILE |
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789 _asm |
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790 LFSR 1,C_STACK |
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791 MOVLW 0xCC |
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792 loop: MOVWF POSTINC1,0 |
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793 TSTFSZ FSR1L,0 |
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794 BRA loop |
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795 |
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796 LFSR 1,C_STACK |
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797 LFSR 2,C_STACK |
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798 _endasm |
| 184 | 799 #endif |
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800 } |
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801 |
| 167 | 802 ////////////////////////////////////////////////////////////////////////////// |
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803 // When calling C code from ASM context, the data stack pointer and |
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804 // frames should be reset. Bank3 is dedicated to the stack (see the |
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805 // .lkr script). |
| 184 | 806 #ifdef CROSS_COMPILE |
| 807 # define RESET_C_STACK | |
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808 #else |
| 184 | 809 # ifdef __DEBUG |
| 810 # define RESET_C_STACK fillDataStack(); | |
| 811 # else | |
| 812 # define RESET_C_STACK \ | |
| 813 _asm \ | |
| 814 LFSR 1, C_STACK \ | |
| 815 LFSR 2, C_STACK \ | |
| 816 _endasm | |
| 817 # endif | |
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818 #endif |
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819 |
| 167 | 820 ////////////////////////////////////////////////////////////////////////////// |
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821 // Called every 2 seconds during diving. |
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822 // update tissues every time. |
| 184 | 823 // |
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824 // Every 6 seconds (or slower when TTS > 16): |
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825 // - update deco table (char_O_deco_time/depth) with new values. |
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826 // - update ascent time, |
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827 // - set status to zero (so we can check there is new results). |
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828 // |
| 116 | 829 void deco_calc_hauptroutine(void) |
| 830 { | |
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831 RESET_C_STACK |
| 116 | 832 calc_hauptroutine(); |
| 833 int_O_desaturation_time = 65535; | |
| 834 } | |
| 835 | |
| 167 | 836 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 837 // Reset decompression model: |
| 838 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 839 // + Reset last stop to 0m | |
| 840 // + Reset all model output. | |
| 116 | 841 void deco_clear_tissue(void) |
| 842 { | |
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843 RESET_C_STACK |
| 116 | 844 clear_tissue(); |
| 845 } | |
| 846 | |
| 167 | 847 ////////////////////////////////////////////////////////////////////////////// |
| 848 | |
| 116 | 849 void deco_calc_wo_deco_step_1_min(void) |
| 850 { | |
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851 RESET_C_STACK |
| 116 | 852 calc_wo_deco_step_1_min(); |
| 853 deco_calc_desaturation_time(); | |
| 854 } | |
| 855 | |
| 167 | 856 ////////////////////////////////////////////////////////////////////////////// |
| 857 | |
| 116 | 858 void deco_debug(void) |
| 859 { | |
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860 RESET_C_STACK |
| 116 | 861 } |
| 862 | |
| 167 | 863 ////////////////////////////////////////////////////////////////////////////// |
| 201 | 864 // Calculate gas switches |
| 865 // | |
| 866 // | |
| 212 | 867 // Input: N2_ratio, He_ratio. |
| 868 // deco_gas_change* | |
| 869 // sim_gas_delay, sim_gas_last_used, sim_dive_mins. | |
| 870 // | |
| 871 // Output: calc_N2_ratio, calc_He_ratio | |
| 872 // temp_depth_limit, sim_gas_delay, sim_gas_last_used IFF the is a switch. | |
| 873 // | |
| 874 static void check_gas_switch(void) | |
| 201 | 875 { |
| 203 | 876 overlay unsigned char temp_gas_switch = 0; |
| 212 | 877 overlay unsigned char switch_deco = 0; |
| 201 | 878 |
| 879 calc_N2_ratio = N2_ratio; | |
| 880 calc_He_ratio = He_ratio; | |
| 881 | |
| 882 if (char_I_const_ppO2 == 0) | |
| 883 { | |
| 884 // Keep selecting the best gas during the ascent simulation. | |
| 212 | 885 // Add a one meter margin in depth comparaison. |
| 886 if( deco_gas_change1 && ((temp_depth_limit-1) <= deco_gas_change1)) | |
| 201 | 887 { |
| 888 calc_N2_ratio = deco_N2_ratio1; | |
| 889 calc_He_ratio = deco_He_ratio1; | |
| 890 temp_gas_switch = 1; | |
| 891 switch_deco = deco_gas_change1; | |
| 892 } | |
| 212 | 893 if(deco_gas_change2 && ((temp_depth_limit-1) <= deco_gas_change2)) |
| 201 | 894 { |
| 895 calc_N2_ratio = char_I_deco_N2_ratio2 * 0.01; | |
| 896 calc_He_ratio = char_I_deco_He_ratio2 * 0.01; | |
| 897 temp_gas_switch = 2; | |
| 898 switch_deco = deco_gas_change2; | |
| 899 } | |
| 212 | 900 if(deco_gas_change3 && ((temp_depth_limit-1) <= deco_gas_change3)) |
| 201 | 901 { |
| 902 calc_N2_ratio = char_I_deco_N2_ratio3 * 0.01; | |
| 903 calc_He_ratio = char_I_deco_He_ratio3 * 0.01; | |
| 904 temp_gas_switch = 3; | |
| 905 switch_deco = deco_gas_change3; | |
| 906 } | |
| 212 | 907 if(deco_gas_change4 && ((temp_depth_limit-1) <= deco_gas_change4)) |
| 201 | 908 { |
| 909 calc_N2_ratio = char_I_deco_N2_ratio4 * 0.01; | |
| 910 calc_He_ratio = char_I_deco_He_ratio4 * 0.01; | |
| 911 temp_gas_switch = 4; | |
| 912 switch_deco = deco_gas_change4; | |
| 913 } | |
| 212 | 914 if(deco_gas_change5 && ((temp_depth_limit-1) <= deco_gas_change5)) |
| 201 | 915 { |
| 916 calc_N2_ratio = char_I_deco_N2_ratio5 * 0.01; | |
| 917 calc_He_ratio = char_I_deco_He_ratio5 * 0.01; | |
| 918 temp_gas_switch = 5; | |
| 919 switch_deco = deco_gas_change5; | |
| 920 } | |
| 921 } | |
| 922 | |
| 203 | 923 // If there is a better gas available |
| 924 if( temp_gas_switch ) | |
| 201 | 925 { |
| 212 | 926 // Should restart gas-switch delay only when gas do changes... |
| 203 | 927 // sim_gas_last_used: used to detect just once in each ascent simu. |
| 928 // N2_ratio : used to detect when already breathing that gas. | |
| 929 if( sim_gas_last_used < temp_gas_switch | |
| 930 && sim_gas_delay <= sim_dive_mins | |
| 931 && (calc_N2_ratio != N2_ratio || calc_He_ratio != He_ratio)) | |
| 932 { | |
| 933 sim_gas_last_used = temp_gas_switch; | |
| 934 sim_gas_delay = read_custom_function(55); | |
| 201 | 935 |
| 203 | 936 // Apply depth correction ONLY if CF#55 is not null: |
| 937 if( sim_gas_delay > 0 ) | |
| 938 { | |
| 939 sim_gas_delay += sim_dive_mins; | |
| 212 | 940 temp_depth_limit = switch_deco; |
| 203 | 941 } |
| 201 | 942 } |
| 943 } | |
| 203 | 944 else |
| 945 sim_gas_delay = 0; | |
| 201 | 946 |
| 947 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 948 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 949 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 950 } | |
| 951 | |
| 952 ////////////////////////////////////////////////////////////////////////////// | |
| 953 // | |
| 212 | 954 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 955 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 956 // Water-vapor pressure inside lumbs (ppWVapour). | |
| 957 // | |
| 958 // Output: ppO2, ppHe. | |
| 959 // | |
| 960 static void sim_alveolar_presures(void) | |
| 201 | 961 { |
| 212 | 962 overlay float deco_diluent = temp_deco; // new in v.101 |
| 963 | |
| 964 //---- CCR mode : deco gas switch ? -------------------------------------- | |
| 201 | 965 if (char_I_const_ppO2 != 0) |
| 966 { | |
| 212 | 967 // In CCR mode, calc_XX_ratio == XX_ratio. |
| 968 if( temp_deco > deco_ppO2_change ) | |
| 969 deco_diluent = ((temp_deco - const_ppO2)/(calc_N2_ratio + calc_He_ratio)); | |
| 201 | 970 else |
| 212 | 971 deco_diluent = ((temp_deco - deco_ppO2)/(calc_N2_ratio + calc_He_ratio)); |
| 972 | |
| 973 if (deco_diluent > temp_deco) | |
| 974 deco_diluent = temp_deco; | |
| 201 | 975 } |
| 976 | |
| 212 | 977 // Take deco offset into account, but not at surface. |
| 978 if( deco_diluent > pres_surface ) | |
| 979 deco_diluent += float_deco_distance; | |
| 980 | |
| 981 if( deco_diluent > ppWVapour ) | |
| 201 | 982 { |
| 983 ppO2 = calc_N2_ratio * (deco_diluent - ppWVapour); | |
| 984 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); | |
| 985 } | |
| 986 else | |
| 987 { | |
| 988 ppO2 = 0.0; | |
| 989 ppHe = 0.0; | |
| 990 } | |
| 991 assert( 0.0 <= ppO2 && ppO2 < 14.0 ); | |
| 992 assert( 0.0 <= ppHe && ppHe < 14.0 ); | |
| 993 } | |
| 994 | |
| 995 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 996 // clear_tissue |
| 997 // | |
| 165 | 998 // optimized in v.101 (var_N2_a) |
| 167 | 999 // |
| 1000 // preload tissues with standard pressure for the given ambient pressure. | |
| 1001 // Note: fixed N2_ratio for standard air. | |
| 201 | 1002 // |
| 167 | 1003 static void clear_tissue(void) |
| 116 | 1004 { |
| 1005 flag_in_divemode = 0; | |
| 1006 int_O_DBS_bitfield = 0; | |
| 1007 int_O_DBS2_bitfield = 0; | |
| 1008 int_O_DBG_pre_bitfield = 0; | |
| 1009 int_O_DBG_post_bitfield = 0; | |
| 1010 char_O_NDL_at_20mtr = 255; | |
| 1011 | |
| 167 | 1012 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1013 N2_ratio = 0.7902; | |
| 212 | 1014 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1015 |
| 167 | 1016 for(ci=0; ci<16; ci++) |
| 126 | 1017 { |
| 197 | 1018 // cycle through the 16 Bühlmann tissues |
| 200 | 1019 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
| 164 | 1020 pres_tissue[ci] = p; |
| 197 | 1021 |
| 184 | 1022 read_buhlmann_coefficients(-1); |
| 165 | 1023 |
| 1024 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 1025 if( p < 0.0 ) |
| 1026 p = 0.0; | |
| 1027 pres_tissue_limit[ci] = p; | |
| 1028 | |
| 197 | 1029 // cycle through the 16 Bühlmann tissues for Helium |
| 167 | 1030 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1031 } // for 0 to 16 |
| 116 | 1032 |
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1033 clear_deco_table(); |
| 126 | 1034 char_O_deco_status = 0; |
| 1035 char_O_nullzeit = 0; | |
| 168 | 1036 int_O_ascenttime = 0; |
| 126 | 1037 char_O_gradient_factor = 0; |
| 1038 char_O_relative_gradient_GF = 0; | |
| 197 | 1039 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 1040 } |
| 116 | 1041 |
| 167 | 1042 ////////////////////////////////////////////////////////////////////////////// |
| 1043 // calc_hauptroutine | |
| 1044 // | |
| 1045 // this is the major code in dive mode calculates: | |
| 116 | 1046 // the tissues, |
| 167 | 1047 // the bottom time, |
| 1048 // and simulates the ascend with all deco stops. | |
| 171 | 1049 // |
| 1050 // The deco_state sequence is : | |
| 1051 // 3 (at surface) | |
| 1052 // +---> 0 : calc nullzeit | |
| 1053 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1054 // | +-> 1 : simulate up to 16min of stops. | |
| 1055 // | +------< not finished | |
| 1056 // +--------< finish | |
| 1057 // | |
| 167 | 1058 static void calc_hauptroutine(void) |
| 116 | 1059 { |
| 186 | 1060 static float backup_GF_step; |
| 192 | 1061 static unsigned char backup_low_depth; |
| 201 | 1062 static unsigned char backup_gas_used; |
| 203 | 1063 static unsigned char backup_gas_delay; |
| 186 | 1064 |
| 116 | 1065 calc_hauptroutine_data_input(); |
| 1066 | |
| 1067 if(!flag_in_divemode) | |
| 1068 { | |
| 1069 flag_in_divemode = 1; | |
| 1070 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1071 } | |
| 1072 else | |
| 1073 check_pre_dbg(); | |
| 1074 | |
| 1075 calc_hauptroutine_update_tissues(); | |
| 1076 calc_gradient_factor(); | |
| 1077 | |
| 167 | 1078 // toggle between calculation for nullzeit (bottom time), |
| 1079 // deco stops | |
| 1080 // and more deco stops (continue) | |
| 1081 switch( char_O_deco_status ) | |
| 116 | 1082 { |
| 186 | 1083 case 3: //---- At surface: start a new dive ------------------------------ |
| 1084 clear_deco_table(); | |
| 1085 copy_deco_table(); | |
| 200 | 1086 int_O_ascenttime = 0; // Reset DTR. |
| 1087 char_O_nullzeit = 0; // Reset bottom time. | |
| 1088 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 201 | 1089 |
| 1090 // Values that should be reset just once for the full real dive | |
| 1091 // (not every time we simulate an ascent): | |
| 1092 low_depth = 0; // Reset GF history. | |
| 192 | 1093 backup_low_depth = 255; // backup is empty... |
| 203 | 1094 sim_gas_last_used = 0; // Reset gas switch history. |
| 1095 sim_gas_delay = 0; | |
| 1096 sim_dive_mins = 0; | |
| 201 | 1097 |
| 203 | 1098 break; |
| 186 | 1099 |
| 167 | 1100 case 0: //---- bottom time ----------------------------------------------- |
| 1101 calc_nullzeit(); | |
| 1102 check_ndl(); | |
| 186 | 1103 char_O_deco_status = 2; // calc ascent next time. |
| 1104 break; | |
| 1105 | |
| 1106 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 201 | 1107 // Backup ascention state, so the simulation won't polute the real |
| 1108 // dive data. | |
| 186 | 1109 backup_GF_step = locked_GF_step; |
| 192 | 1110 backup_low_depth = low_depth; |
| 203 | 1111 |
| 1112 // Check proposed gas at begin of ascent simulation | |
| 1113 sim_dive_mins = int_I_divemins; // and time. | |
| 212 | 1114 temp_depth_limit = (int)(0.95 + (pres_respiration - pres_surface) / 0.09985) ; // Starts from current real depth. |
| 203 | 1115 check_gas_switch(); |
| 1116 | |
| 1117 backup_gas_used = sim_gas_last_used;// And save for later simu steps. | |
| 1118 backup_gas_delay = sim_gas_delay; | |
| 186 | 1119 |
| 1120 sim_ascent_to_first_stop(); | |
| 201 | 1121 |
| 1122 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
| 167 | 1123 break; |
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1125 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1126 calc_hauptroutine_calc_deco(); |
| 186 | 1127 |
| 1128 // If simulation is finished, restore the GF low reference, so that | |
| 1129 // next ascent simulation is done from the current depth: | |
| 192 | 1130 if( char_O_deco_status == 0 && backup_low_depth != 255) |
| 186 | 1131 { |
| 1132 locked_GF_step = backup_GF_step; | |
| 192 | 1133 low_depth = backup_low_depth; |
| 201 | 1134 sim_gas_last_used = backup_gas_used; |
| 203 | 1135 sim_gas_delay = backup_gas_delay; |
| 1136 | |
| 1137 backup_low_depth = 255; | |
| 186 | 1138 } |
| 167 | 1139 break; |
| 116 | 1140 } |
| 167 | 1141 |
| 116 | 1142 check_post_dbg(); |
| 1143 } | |
| 1144 | |
| 167 | 1145 ////////////////////////////////////////////////////////////////////////////// |
| 1146 // calc_hauptroutine_data_input | |
| 1147 // | |
| 1148 // Reset all C-code dive parameters from their ASM-code values. | |
| 1149 // Detect gas change condition. | |
| 1150 // | |
| 116 | 1151 void calc_hauptroutine_data_input(void) |
| 1152 { | |
| 203 | 1153 overlay short int_temp; |
| 126 | 1154 |
| 197 | 1155 pres_respiration = int_I_pres_respiration * 0.001; |
| 1156 pres_surface = int_I_pres_surface * 0.001; | |
| 1157 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1158 He_ratio = char_I_He_ratio * 0.01; | |
| 1159 deco_N2_ratio1 = char_I_deco_N2_ratio1 * 0.01; | |
| 1160 deco_He_ratio1 = char_I_deco_He_ratio1 * 0.01; | |
| 1161 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1162 |
| 126 | 1163 // ____________________________________________________ |
| 1164 // | |
| 1165 // _____________ G A S _ C H A N G E S ________________ | |
| 1166 // ____________________________________________________ | |
| 1167 | |
| 212 | 1168 // Keep a margin of 150mbar = 1.50m |
| 1169 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1170 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1171 |
| 212 | 1172 deco_gas_change1 = 0; |
| 1173 deco_gas_change2 = 0; | |
| 1174 deco_gas_change3 = 0; | |
| 1175 deco_gas_change4 = 0; | |
| 1176 deco_gas_change5 = 0; | |
| 116 | 1177 |
| 203 | 1178 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
| 167 | 1179 if(char_I_deco_gas_change1) |
| 126 | 1180 { |
| 203 | 1181 if( int_temp > 100 *(short)char_I_deco_gas_change1 ) |
| 212 | 1182 deco_gas_change1 = char_I_deco_gas_change1; |
| 126 | 1183 } |
| 1184 if(char_I_deco_gas_change2) | |
| 1185 { | |
| 203 | 1186 if( int_temp > 100 *(short)char_I_deco_gas_change2 ) |
| 212 | 1187 deco_gas_change2 = char_I_deco_gas_change2; |
| 126 | 1188 } |
| 1189 if(char_I_deco_gas_change3) | |
| 1190 { | |
| 203 | 1191 if( int_temp > 100 *(short)char_I_deco_gas_change3 ) |
| 212 | 1192 deco_gas_change3 = char_I_deco_gas_change3; |
| 126 | 1193 } |
| 1194 if(char_I_deco_gas_change4) | |
| 1195 { | |
| 203 | 1196 if( int_temp > 100 *(short)char_I_deco_gas_change4 ) |
| 212 | 1197 deco_gas_change4 = char_I_deco_gas_change4; |
| 126 | 1198 } |
| 1199 if(char_I_deco_gas_change5) | |
| 1200 { | |
| 203 | 1201 if( int_temp > 100 *(short)char_I_deco_gas_change5 ) |
| 212 | 1202 deco_gas_change5 = char_I_deco_gas_change5; |
| 126 | 1203 } |
| 116 | 1204 |
| 197 | 1205 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1206 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
| 1207 + pres_surface | |
| 1208 + float_deco_distance; | |
| 1209 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1210 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1211 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1212 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1213 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1214 GF_delta = GF_high - GF_low; |
| 116 | 1215 } |
| 1216 | |
| 167 | 1217 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1218 // |
| 1219 // | |
| 116 | 1220 void calc_hauptroutine_update_tissues(void) |
| 1221 { | |
| 197 | 1222 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1223 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1224 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 1225 | |
| 1226 if (char_I_const_ppO2 == 0) // new in v.101 | |
| 167 | 1227 pres_diluent = pres_respiration; // new in v.101 |
| 186 | 1228 else |
| 1229 { | |
| 167 | 1230 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
| 186 | 1231 if (pres_diluent > pres_respiration) // new in v.101 |
| 1232 pres_diluent = pres_respiration; // new in v.101 | |
| 1233 } | |
| 200 | 1234 if (pres_diluent > ppWVapour) // new in v.101 |
| 116 | 1235 { |
| 200 | 1236 ppO2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 1237 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 | |
| 116 | 1238 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1239 } | |
| 167 | 1240 else // new in v.101 |
| 116 | 1241 { |
| 200 | 1242 ppO2 = 0.0; // new in v.101 |
| 1243 ppHe = 0.0; // new in v.101 | |
| 116 | 1244 char_O_diluent = 0; |
| 1245 } | |
| 1246 | |
| 1247 if(!char_I_step_is_1min) | |
| 192 | 1248 calc_tissue(0); |
| 116 | 1249 else |
| 192 | 1250 calc_tissue(1); |
| 186 | 1251 |
| 192 | 1252 // Calc limit for surface, ie. GF_high. |
| 1253 calc_limit(GF_high); | |
| 186 | 1254 |
| 203 | 1255 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 1256 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 192 | 1257 |
| 1258 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1259 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1260 { |
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1261 char_O_nullzeit = 0; // deco necessary |
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1262 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1263 } |
| 171 | 1264 } |
| 1265 | |
| 116 | 1266 |
| 167 | 1267 ////////////////////////////////////////////////////////////////////////////// |
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1268 // Compute stops. |
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1269 // |
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1270 // Note: because this can be very long, break on 16 iterations, and set state |
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1271 // to 0 when finished, or to 1 when needing to continue. |
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1272 // |
| 116 | 1273 void calc_hauptroutine_calc_deco(void) |
| 1274 { | |
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1275 overlay unsigned char loop; |
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1276 |
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1277 for(loop = 0; loop < 16; ++loop) |
| 116 | 1278 { |
| 212 | 1279 overlay float new_presure; |
| 1280 overlay unsigned char backup_gas_last_used; | |
| 1281 | |
| 197 | 1282 // Do not ascent while doing a gas switch. |
| 203 | 1283 if( sim_gas_delay <= sim_dive_mins ) |
| 1284 { | |
| 212 | 1285 backup_gas_last_used = sim_gas_last_used; |
| 197 | 1286 calc_nextdecodepth(); |
| 116 | 1287 |
| 203 | 1288 //---- Finish computations once surface is reached --------------- |
| 1289 if( temp_depth_limit == 0 ) | |
| 1290 { | |
| 1291 copy_deco_table(); | |
| 1292 calc_ascenttime(); | |
| 1293 char_O_deco_status = 0; // calc nullzeit next time. | |
| 1294 return; | |
| 1295 } | |
| 212 | 1296 } |
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1297 |
| 212 | 1298 //---- Can we ascent to that stop at once, or is it just ascenting ? |
| 1299 new_presure = temp_depth_limit * 0.09985 // Convert to relative bar, | |
| 1300 + pres_surface; // To absolute, | |
| 1301 | |
| 1302 if( (temp_deco - new_presure) > 1.0 ) // More than 10m/mn ? | |
| 1303 { | |
| 1304 temp_deco -= 1.0; // Just keep ascending. | |
| 1305 sim_gas_delay = 0; // Reset gas delay, | |
| 1306 sim_gas_last_used = backup_gas_last_used; // and usage history. | |
| 1307 } | |
| 1308 else | |
| 1309 { | |
| 1310 temp_deco = new_presure; | |
| 1311 update_deco_table(); // This is a one minute stops. | |
| 203 | 1312 } |
| 197 | 1313 |
| 203 | 1314 //---- Then update tissue and decoplan ------------------------------- |
| 1315 sim_dive_mins++; // Advance simulated time by 1 minute. | |
| 212 | 1316 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1317 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1318 } |
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1319 |
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1320 // Surface not reached, need more stops... |
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1321 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1322 } |
| 1323 | |
| 167 | 1324 ////////////////////////////////////////////////////////////////////////////// |
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1325 // Simulation ascention to first deco stop. |
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1326 // |
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1327 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1328 // there is no need to break on more that 16 iterations |
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1329 // (or we are already in deep shit). |
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1330 // |
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1331 void sim_ascent_to_first_stop(void) |
| 116 | 1332 { |
| 171 | 1333 update_startvalues(); |
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1334 clear_deco_table(); |
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1335 |
| 200 | 1336 temp_deco = pres_respiration; // Starts from current real depth. |
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1337 |
| 212 | 1338 // Do we have a gas switch going on ? |
| 1339 if( sim_gas_delay > sim_dive_mins ) | |
| 1340 return; | |
| 1341 | |
| 203 | 1342 // Loop until first stop, gas switch, or surface is reached. |
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1343 for(;;) |
| 116 | 1344 { |
| 203 | 1345 // No: try ascending 1 full minute. |
| 1346 temp_deco -= 1.0; // Ascent 1 min, at 10m/min. == 1bar/min. | |
| 1347 | |
| 212 | 1348 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1349 sim_limit(GF_low); | |
| 1350 | |
| 1351 // Did we reach deepest remaining stop ? | |
| 1352 if( temp_deco <= sim_lead_tissue_limit ) | |
| 1353 { | |
| 1354 temp_deco += 1.0; // Restore last correct depth. | |
| 1355 break; // Return stop found ! | |
| 1356 } | |
| 1357 | |
| 203 | 1358 // Did we reach surface ? |
| 1359 if( temp_deco <= pres_surface ) | |
| 1360 { | |
| 1361 temp_deco = pres_surface; // Yes: finished ! | |
| 1362 break; | |
| 1363 } | |
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1364 |
| 212 | 1365 // Check gas change 5 meter below new depth. |
| 1366 temp_depth_limit = (temp_deco + 0.5 - pres_surface) / 0.09985; | |
| 1367 check_gas_switch(); | |
| 1368 if( sim_gas_delay > sim_dive_mins ) | |
| 1369 break; | |
| 171 | 1370 |
| 203 | 1371 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 212 | 1372 sim_alveolar_presures(); // Still uses temp_deco. |
| 203 | 1373 sim_tissue(1); // and update tissues for 1 min. |
| 1374 } | |
| 167 | 1375 } |
| 116 | 1376 |
| 167 | 1377 ////////////////////////////////////////////////////////////////////////////// |
| 1378 // calc_tissue | |
| 1379 // | |
| 116 | 1380 // optimized in v.101 |
| 167 | 1381 // |
| 184 | 1382 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1383 { |
| 126 | 1384 for (ci=0;ci<16;ci++) |
| 1385 { | |
| 184 | 1386 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1387 |
| 126 | 1388 // N2 |
| 200 | 1389 temp_tissue = (ppO2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1390 temp_tissue_safety(); |
| 167 | 1391 pres_tissue[ci] += temp_tissue; |
| 165 | 1392 |
| 126 | 1393 // He |
| 200 | 1394 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1395 temp_tissue_safety(); |
| 167 | 1396 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1397 } |
| 167 | 1398 } |
| 116 | 1399 |
| 167 | 1400 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1401 // calc_limit |
| 167 | 1402 // |
| 192 | 1403 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1404 // |
| 192 | 1405 static void calc_limit(PARAMETER float GF_current) |
| 167 | 1406 { |
| 192 | 1407 char_O_gtissue_no = 255; |
| 1408 calc_lead_tissue_limit = 0.0; | |
| 1409 | |
| 1410 for (ci=0;ci<16;ci++) | |
| 1411 { | |
| 1412 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1413 | |
| 1414 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
| 1415 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
| 1416 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1417 |
| 192 | 1418 // Apply the Eric Baker's varying gradient factor correction. |
| 1419 // Note: the correction factor depends both on GF and b, | |
| 1420 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1421 // so that can change who is the leading gas... | |
| 1422 // Note: Also depends of the GF. So the calcul is different for | |
| 1423 // GF_low, current GF, or GF_high... | |
| 1424 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1425 // hence what would happend at surface, | |
| 1426 // hence at GF_high. | |
| 1427 if( char_I_deco_model == 1 ) | |
| 1428 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1429 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1430 else | |
| 1431 p = (p - var_N2_a) * var_N2_b; | |
| 1432 if( p < 0 ) p = 0; | |
| 1433 | |
| 1434 pres_tissue_limit[ci] = p; | |
| 1435 if( p > calc_lead_tissue_limit ) | |
| 1436 { | |
| 1437 char_O_gtissue_no = ci; | |
| 1438 calc_lead_tissue_limit = p; | |
| 1439 } | |
| 1440 } | |
| 197 | 1441 |
| 1442 assert( char_O_gtissue_no < 16 ); | |
| 1443 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1444 } |
| 1445 | |
| 1446 ////////////////////////////////////////////////////////////////////////////// | |
| 1447 // calc_nullzeit | |
| 1448 // | |
| 1449 // calculates the remaining bottom time | |
| 1450 // | |
| 1451 // unchanged in v.101 | |
| 1452 // | |
| 1453 static void calc_nullzeit(void) | |
| 1454 { | |
| 203 | 1455 overlay unsigned char loop; |
| 200 | 1456 update_startvalues(); |
| 167 | 1457 |
| 116 | 1458 char_O_nullzeit = 0; |
| 167 | 1459 for(loop = 1; loop <= 17; loop++) |
| 116 | 1460 { |
| 1461 backup_sim_pres_tissue(); | |
| 197 | 1462 sim_tissue(2); // 10 min. |
| 192 | 1463 sim_limit(GF_high); |
| 167 | 1464 |
| 192 | 1465 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1466 { |
| 1467 restore_sim_pres_tissue(); | |
| 1468 break; | |
| 1469 } | |
| 1470 // Validate once we know its good. | |
| 1471 char_O_nullzeit += 10; | |
| 167 | 1472 } |
| 1473 | |
| 116 | 1474 if (char_O_nullzeit < 60) |
| 1475 { | |
| 167 | 1476 for(loop=1; loop <= 10; loop++) |
| 116 | 1477 { |
| 197 | 1478 sim_tissue(1); // 1 min |
| 192 | 1479 sim_limit(GF_high); |
| 1480 | |
| 1481 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1482 break; |
| 1483 char_O_nullzeit++; | |
| 167 | 1484 } |
| 185 | 1485 } |
| 1486 } | |
| 116 | 1487 |
| 167 | 1488 ////////////////////////////////////////////////////////////////////////////// |
| 1489 // backup_sim_pres_tissue | |
| 1490 // | |
| 116 | 1491 void backup_sim_pres_tissue(void) |
| 1492 { | |
| 167 | 1493 overlay unsigned char x; |
| 1494 | |
| 1495 for(x = 0; x<32; x++) | |
| 126 | 1496 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1497 } |
| 116 | 1498 |
| 167 | 1499 ////////////////////////////////////////////////////////////////////////////// |
| 1500 // restore_sim_pres_tissue | |
| 1501 // | |
| 116 | 1502 void restore_sim_pres_tissue(void) |
| 1503 { | |
| 167 | 1504 overlay unsigned char x; |
| 1505 | |
| 1506 for(x = 0; x<32; x++) | |
| 126 | 1507 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1508 } |
| 116 | 1509 |
| 167 | 1510 ////////////////////////////////////////////////////////////////////////////// |
| 1511 // calc_ascenttime | |
| 1512 // | |
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1513 static void calc_ascenttime(void) |
| 116 | 1514 { |
| 126 | 1515 if (pres_respiration > pres_surface) |
| 1516 { | |
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1517 overlay unsigned char x; |
| 168 | 1518 |
| 192 | 1519 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
| 1520 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
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1521 if (ascent < 0.0) |
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1522 ascent = 0.0; |
| 203 | 1523 int_O_ascenttime = (unsigned short)(ascent + 0.99); |
| 168 | 1524 |
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1525 for(x=0; x<32 && internal_deco_depth[x]; x++) |
| 203 | 1526 int_O_ascenttime += (unsigned short)internal_deco_time[x]; |
| 126 | 1527 } |
| 1528 else | |
| 168 | 1529 int_O_ascenttime = 0; |
| 167 | 1530 } |
| 116 | 1531 |
| 167 | 1532 ////////////////////////////////////////////////////////////////////////////// |
| 1533 // update_startvalues | |
| 1534 // | |
| 116 | 1535 // updated in v.102 |
| 167 | 1536 // |
| 116 | 1537 void update_startvalues(void) |
| 1538 { | |
| 167 | 1539 overlay unsigned char x; |
| 116 | 1540 |
| 201 | 1541 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1542 for (x = 0;x<16;x++) |
| 1543 { | |
| 1544 sim_pres_tissue[x] = pres_tissue[x]; | |
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1545 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1546 sim_pres_tissue_limit[x] = pres_tissue_limit[x]; |
| 1547 } | |
| 197 | 1548 |
| 201 | 1549 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1550 sim_lead_tissue_limit = 0.0; |
| 1551 sim_lead_tissue_no = 255; | |
| 167 | 1552 } |
| 116 | 1553 |
| 167 | 1554 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1555 // sim_tissue |
| 167 | 1556 // |
| 116 | 1557 // optimized in v.101 |
| 167 | 1558 // |
| 1559 // Function very simular to calc_tissue, but: | |
| 1560 // + Use a 1min or 10min period. | |
| 1561 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1562 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1563 { |
| 192 | 1564 for(ci=0; ci<16; ci++) |
| 126 | 1565 { |
| 184 | 1566 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1567 |
| 126 | 1568 // N2 |
| 200 | 1569 temp_tissue = (ppO2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1570 temp_tissue_safety(); |
| 167 | 1571 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1572 |
| 1573 // He | |
| 200 | 1574 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1575 temp_tissue_safety(); |
| 167 | 1576 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1577 } |
| 167 | 1578 } |
| 116 | 1579 |
| 167 | 1580 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1581 // sim_limit() |
| 1582 // | |
| 1583 // New in v.111 | |
| 1584 // | |
| 1585 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1586 // different depth, because it depends on current gradient factor. | |
| 167 | 1587 // |
| 192 | 1588 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1589 { |
| 212 | 1590 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1591 | |
| 192 | 1592 sim_lead_tissue_limit = 0.0; |
| 212 | 1593 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1594 |
| 1595 for(ci=0; ci<16; ci++) | |
| 1596 { | |
| 1597 overlay float p = sim_pres_tissue[ci] + (sim_pres_tissue+16)[ci]; | |
| 1598 | |
| 1599 read_buhlmann_coefficients(-1); | |
| 1600 var_N2_a = (var_N2_a * sim_pres_tissue[ci] + var_He_a * (sim_pres_tissue+16)[ci]) / p; | |
| 1601 var_N2_b = (var_N2_b * sim_pres_tissue[ci] + var_He_b * (sim_pres_tissue+16)[ci]) / p; | |
| 1602 | |
| 1603 // Apply the Eric Baker's varying gradient factor correction. | |
| 1604 // Note: the correction factor depends both on GF and b, | |
| 1605 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1606 // so that can change who is the leading gas... | |
| 1607 // Note: Also depends of the GF_current... | |
| 1608 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1609 // hence what would happend at surface, | |
| 1610 // hence at GF_high. | |
| 1611 if( char_I_deco_model == 1 ) | |
| 1612 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1613 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1614 else | |
| 1615 p = (p - var_N2_a) * var_N2_b; | |
| 1616 if( p < 0 ) p = 0; | |
| 1617 | |
| 1618 sim_pres_tissue_limit[ci] = p; | |
| 1619 if( p > sim_lead_tissue_limit ) | |
| 1620 { | |
| 1621 sim_lead_tissue_no = ci; | |
| 1622 sim_lead_tissue_limit = p; | |
| 1623 } | |
| 1624 } // for ci | |
| 197 | 1625 |
| 1626 assert( sim_lead_tissue_no < 16 ); | |
| 1627 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0); | |
| 167 | 1628 } |
| 116 | 1629 |
| 167 | 1630 ////////////////////////////////////////////////////////////////////////////// |
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1631 // clear_deco_table |
| 167 | 1632 // |
| 1633 // unchanged in v.101 | |
| 1634 // | |
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1635 static void clear_deco_table(void) |
| 116 | 1636 { |
|
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1637 overlay unsigned char x; |
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1638 |
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1639 for(x=0; x<32; ++x) |
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1640 { |
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1641 internal_deco_time [x] = 0; |
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1642 internal_deco_depth[x] = 0; |
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1643 } |
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1644 } |
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1645 |
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1646 ////////////////////////////////////////////////////////////////////////////// |
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1647 // update_deco_table |
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1648 // |
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1649 // Add 1 min to current stop. |
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1650 // |
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1651 // Inputs: |
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1652 // temp_depth_limit = stop's depth, in meters. |
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1653 // In/Out: |
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1654 // internal_deco_depth[] : depth (in meters) of each stops. |
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1655 // internal_deco_time [] : time (in minutes) of each stops. |
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1656 // |
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1657 static void update_deco_table() |
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1658 { |
| 192 | 1659 overlay unsigned char x; |
| 200 | 1660 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1661 |
| 192 | 1662 for(x=0; x<32; ++x) |
| 1663 { | |
| 212 | 1664 // Make sure deco-stops are recorded in order: |
| 1665 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
| 1666 | |
| 200 | 1667 if( internal_deco_depth[x] == temp_depth_limit ) |
| 192 | 1668 { |
| 1669 // Do not overflow (max 255') | |
| 1670 if( internal_deco_time[x] < 255 ) | |
| 1671 { | |
| 1672 internal_deco_time[x]++; | |
| 1673 return; | |
| 1674 } | |
| 1675 // But store extra in the next stop... | |
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1676 } |
| 192 | 1677 |
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1678 if( internal_deco_depth[x] == 0 ) |
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1679 { |
| 192 | 1680 internal_deco_depth[x] = temp_depth_limit; |
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1681 internal_deco_time[x] = 1; |
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1682 return; |
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1683 } |
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1684 } |
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1685 |
| 192 | 1686 // Can't store stops at more than 96m. |
| 1687 // Or stops at less that 3m too. | |
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1688 // Just do nothing with that... |
| 167 | 1689 } |
| 116 | 1690 |
| 167 | 1691 ////////////////////////////////////////////////////////////////////////////// |
| 1692 // calc_gradient_factor | |
| 1693 // | |
| 165 | 1694 // optimized in v.101 (var_N2_a) |
| 116 | 1695 // new code in v.102 |
| 167 | 1696 // |
| 1697 static void calc_gradient_factor(void) | |
| 116 | 1698 { |
| 197 | 1699 overlay float gf; |
| 1700 assert( char_O_gtissue_no < 16 ); | |
| 1701 | |
| 116 | 1702 // tissue > respiration (entsaettigungsvorgang) |
| 1703 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1704 // dh. 0% = respiration == tissue | |
| 1705 // dh. 100% = respiration == limit | |
| 197 | 1706 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
| 1707 if( temp_tissue < pres_respiration ) | |
| 1708 gf = 0.0; | |
| 1709 else | |
| 1710 { | |
| 1711 gf = (temp_tissue - pres_respiration) | |
| 1712 / (temp_tissue - pres_tissue_limit[char_O_gtissue_no]) | |
| 1713 * 100.0; | |
| 1714 if( gf > 255.0 ) gf = 255.0; | |
| 1715 if( gf < 0.0 ) gf = 0.0; | |
| 1716 } | |
| 1717 char_O_gradient_factor = (unsigned char)gf; | |
| 116 | 1718 |
| 1719 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1720 { | |
| 197 | 1721 overlay float rgf; |
| 1722 | |
| 1723 if( low_depth == 0 ) | |
| 1724 rgf = GF_high; | |
| 1725 else | |
| 1726 { | |
| 1727 overlay float temp1 = low_depth * 0.09995; | |
| 1728 overlay float temp2 = pres_respiration - pres_surface; | |
| 186 | 1729 |
| 197 | 1730 if (temp2 <= 0) |
| 1731 rgf = GF_high; | |
| 1732 else if (temp2 >= temp1) | |
| 1733 rgf = GF_low; | |
| 1734 else | |
| 1735 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1736 } | |
| 186 | 1737 |
| 197 | 1738 rgf = gf / rgf; // gf is already in percent |
| 1739 if( rgf < 0.0 ) rgf = 0.0; | |
| 1740 if( rgf > 255.0 ) rgf = 255.0; | |
| 1741 char_O_relative_gradient_GF = (unsigned char)rgf; | |
| 116 | 1742 } // calc relative gradient factor |
| 1743 else | |
| 1744 { | |
| 186 | 1745 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1746 } |
| 167 | 1747 } |
| 116 | 1748 |
| 167 | 1749 ////////////////////////////////////////////////////////////////////////////// |
| 1750 // deco_calc_desaturation_time | |
| 1751 // | |
| 116 | 1752 // FIXED N2_ratio |
| 1753 // unchanged in v.101 | |
| 167 | 1754 // |
| 116 | 1755 void deco_calc_desaturation_time(void) |
| 1756 { | |
| 203 | 1757 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 200 | 1758 overlay float temp1; |
| 197 | 1759 overlay float temp2; |
| 1760 overlay float temp3; | |
| 1761 overlay float temp4; | |
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1762 RESET_C_STACK |
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1763 |
| 126 | 1764 N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann |
| 1765 pres_surface = (float)int_I_pres_surface / 1000.0; | |
| 200 | 1766 ppO2 = N2_ratio * (pres_surface - ppWVapour); |
| 126 | 1767 int_O_desaturation_time = 0; |
| 1768 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 1769 | |
| 1770 for (ci=0;ci<16;ci++) | |
| 1771 { | |
| 200 | 1772 overlay float var_N2_halftime = buhlmann_ht[ci]; |
| 1773 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; | |
| 116 | 1774 |
| 126 | 1775 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1776 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1777 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1778 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1779 // N2 | |
| 200 | 1780 temp1 = 1.05 * ppO2; |
| 126 | 1781 temp1 = temp1 - pres_tissue[ci]; |
| 200 | 1782 temp2 = ppO2 - pres_tissue[ci]; |
| 126 | 1783 if (temp2 >= 0.0) |
| 1784 { | |
| 1785 temp1 = 0; | |
| 1786 temp2 = 0; | |
| 1787 } | |
| 1788 else | |
| 1789 temp1 = temp1 / temp2; | |
| 1790 if (temp1 > 0.0) | |
| 1791 { | |
| 1792 temp1 = log(1.0 - temp1); | |
| 1793 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1794 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1795 // minus because log is negative | |
| 165 | 1796 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 | 1797 } |
| 1798 else | |
| 1799 { | |
| 1800 temp1 = 0; | |
| 1801 temp2 = 0; | |
| 1802 } | |
| 116 | 1803 |
| 126 | 1804 // He |
| 167 | 1805 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1806 if (temp3 >= 0.0) |
| 1807 { | |
| 1808 temp3 = 0; | |
| 1809 temp4 = 0; | |
| 1810 } | |
| 1811 else | |
| 167 | 1812 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 126 | 1813 if (temp3 > 0.0) |
| 1814 { | |
| 1815 temp3 = log(1.0 - temp3); | |
| 1816 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1817 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1818 // minus because log is negative | |
| 165 | 1819 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1820 } |
| 1821 else | |
| 1822 { | |
| 1823 temp3 = 0; | |
| 1824 temp4 = 0; | |
| 1825 } | |
| 116 | 1826 |
| 126 | 1827 // saturation_time (for flight) |
| 1828 if (temp4 > temp2) | |
| 203 | 1829 desat_time = (unsigned short)temp4; |
| 126 | 1830 else |
| 203 | 1831 desat_time = (unsigned short)temp2; |
| 167 | 1832 if(desat_time > int_O_desaturation_time) |
| 1833 int_O_desaturation_time = desat_time; | |
| 116 | 1834 |
| 126 | 1835 // N2 saturation in multiples of halftime for display purposes |
| 1836 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1837 temp2 = temp2 + 80.0; // set center | |
| 1838 if (temp2 < 0.0) | |
| 1839 temp2 = 0.0; | |
| 1840 if (temp2 > 255.0) | |
| 1841 temp2 = 255.0; | |
| 1842 char_O_tissue_saturation[ci] = (char)temp2; | |
| 1843 // He saturation in multiples of halftime for display purposes | |
| 1844 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1845 temp4 = temp4 + 80.0; // set center | |
| 1846 if (temp4 < 0.0) | |
| 1847 temp4 = 0.0; | |
| 1848 if (temp4 > 255.0) | |
| 1849 temp4 = 255.0; | |
| 167 | 1850 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1851 } // for |
| 167 | 1852 } |
| 116 | 1853 |
| 167 | 1854 ////////////////////////////////////////////////////////////////////////////// |
| 1855 // calc_wo_deco_step_1_min | |
| 1856 // | |
| 116 | 1857 // FIXED N2 Ratio |
| 1858 // optimized in v.101 (...saturation_multiplier) | |
| 1859 // desaturation slowed down to 70,42% | |
| 167 | 1860 // |
| 1861 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1862 { |
| 1863 if(flag_in_divemode) | |
| 1864 { | |
| 1865 flag_in_divemode = 0; | |
| 1866 set_dbg_end_of_dive(); | |
| 1867 } | |
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1868 |
| 126 | 1869 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 212 | 1870 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
| 1871 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
| 200 | 1872 ppO2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body |
| 1873 ppHe = 0.0; | |
| 126 | 1874 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 1875 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 1876 |
| 192 | 1877 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 1878 |
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1879 clear_deco_table(); |
| 200 | 1880 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 1881 char_O_nullzeit = 0; |
| 168 | 1882 int_O_ascenttime = 0; |
| 126 | 1883 calc_gradient_factor(); |
| 167 | 1884 } |
| 126 | 1885 |
| 167 | 1886 ////////////////////////////////////////////////////////////////////////////// |
| 1887 ////////////////////////////////////////////////////////////////////////////// | |
| 1888 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1889 ////////////////////////////////////////////////////////////////////////////// | |
| 1890 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1891 |
| 184 | 1892 #ifndef CROSS_COMPILE |
| 116 | 1893 void deco_hash(void) |
| 1894 { | |
| 167 | 1895 overlay unsigned char md_i, md_j; // Loop index. |
| 1896 overlay unsigned char md_t; | |
| 1897 overlay unsigned char md_buffer[16]; | |
| 1898 overlay unsigned char md_temp; | |
| 203 | 1899 overlay unsigned short md_pointer; |
| 167 | 1900 |
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1901 RESET_C_STACK |
| 126 | 1902 |
| 1903 // init | |
| 164 | 1904 for(md_i=0;md_i<16;md_i++) |
| 126 | 1905 { |
| 1906 md_state[md_i] = 0; | |
| 164 | 1907 char_O_hash[md_i] = 0; |
| 126 | 1908 } // for md_i 16 |
| 116 | 1909 |
| 126 | 1910 _asm |
| 167 | 1911 movlw 0x01 // md_pi address. |
| 1912 movwf TBLPTRU,0 | |
| 1913 movlw 0x7E | |
| 1914 movwf TBLPTRH,0 | |
| 1915 movlw 0x00 | |
| 1916 movwf TBLPTRL,0 | |
| 126 | 1917 _endasm; |
| 165 | 1918 md_i = 0; |
| 1919 do { | |
| 126 | 1920 _asm |
| 1921 TBLRDPOSTINC | |
| 1922 movff TABLAT,md_temp | |
| 1923 _endasm | |
| 165 | 1924 md_pi_subst[md_i++] = md_temp; |
| 1925 } while( md_i != 0 ); | |
| 1926 | |
| 126 | 1927 _asm |
| 167 | 1928 movlw 0x00 |
| 1929 movwf TBLPTRU,0 | |
| 1930 movlw 0x00 | |
| 1931 movwf TBLPTRH,0 | |
| 1932 movlw 0x00 | |
| 1933 movwf TBLPTRL,0 | |
| 126 | 1934 _endasm |
| 167 | 1935 |
| 126 | 1936 // cycle buffers |
| 1937 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 1938 { | |
| 1939 md_t = 0; | |
| 1940 for (md_i=0;md_i<16;md_i++) | |
| 1941 { | |
| 1942 if(md_pointer == 9) | |
| 164 | 1943 md_temp = char_O_hash[md_i]; |
| 126 | 1944 else |
| 1945 { | |
| 1946 _asm | |
| 167 | 1947 TBLRDPOSTINC |
| 1948 movff TABLAT,md_temp | |
| 126 | 1949 _endasm |
| 1950 } // else | |
| 167 | 1951 |
| 1952 md_buffer[md_i] = md_temp; | |
| 186 | 1953 md_state[md_i+16] = md_temp; |
| 1954 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 1955 } // for md_i 16 |
| 1956 | |
| 1957 for (md_i=0;md_i<18;md_i++) | |
| 1958 { | |
| 1959 for (md_j=0;md_j<48;md_j++) | |
| 1960 { | |
| 167 | 1961 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 1962 md_t = md_state[md_j]; |
| 1963 } // for md_j 48 | |
| 1964 md_t = (unsigned char)(md_t+1); | |
| 1965 } // for md_i 18 | |
| 164 | 1966 md_t = char_O_hash[15]; |
| 126 | 1967 |
| 1968 for (md_i=0;md_i<16;md_i++) | |
| 1969 { | |
| 167 | 1970 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 1971 md_t = char_O_hash[md_i]; |
| 126 | 1972 } // for md_i 16 |
| 1973 } // for md_pointer | |
| 116 | 1974 } // void deco_hash(void) |
| 184 | 1975 #endif |
| 116 | 1976 |
| 167 | 1977 ////////////////////////////////////////////////////////////////////////////// |
| 1978 // deco_clear_CNS_fraction | |
| 1979 // | |
| 116 | 1980 // new in v.101 |
| 167 | 1981 // |
| 116 | 1982 void deco_clear_CNS_fraction(void) |
| 1983 { | |
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1984 RESET_C_STACK |
| 126 | 1985 CNS_fraction = 0.0; |
| 1986 char_O_CNS_fraction = 0; | |
| 167 | 1987 } |
| 116 | 1988 |
| 167 | 1989 ////////////////////////////////////////////////////////////////////////////// |
| 1990 // deco_calc_CNS_fraction | |
| 1991 // | |
| 116 | 1992 // new in v.101 |
| 1993 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 1994 // |
| 116 | 1995 // Input: char_I_actual_ppO2 |
| 1996 // Output: char_O_CNS_fraction | |
| 1997 // Uses and Updates: CNS_fraction | |
| 1998 // Uses: acutal_ppO2 | |
| 167 | 1999 // |
| 116 | 2000 void deco_calc_CNS_fraction(void) |
| 2001 { | |
| 167 | 2002 overlay float actual_ppO2; |
| 126 | 2003 RESET_C_STACK |
| 167 | 2004 |
| 126 | 2005 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 2006 |
| 126 | 2007 if (char_I_actual_ppO2 < 50) |
| 2008 CNS_fraction = CNS_fraction;// no changes | |
| 2009 else if (char_I_actual_ppO2 < 60) | |
| 2010 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 2011 else if (char_I_actual_ppO2 < 70) | |
| 2012 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 2013 else if (char_I_actual_ppO2 < 80) | |
| 2014 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 2015 else if (char_I_actual_ppO2 < 90) | |
| 2016 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 2017 else if (char_I_actual_ppO2 < 110) | |
| 2018 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 2019 else if (char_I_actual_ppO2 < 150) | |
| 2020 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 2021 else if (char_I_actual_ppO2 < 160) | |
| 2022 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 2023 else if (char_I_actual_ppO2 < 165) | |
| 2024 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 | |
| 2025 else if (char_I_actual_ppO2 < 170) | |
| 2026 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 2027 else if (char_I_actual_ppO2 < 175) | |
| 2028 CNS_fraction = 0.00136 + CNS_fraction; | |
| 2029 else if (char_I_actual_ppO2 < 180) | |
| 2030 CNS_fraction = 0.00180 + CNS_fraction; | |
| 2031 else if (char_I_actual_ppO2 < 185) | |
| 2032 CNS_fraction = 0.00237 + CNS_fraction; | |
| 2033 else if (char_I_actual_ppO2 < 190) | |
| 2034 CNS_fraction = 0.00310 + CNS_fraction; | |
| 2035 else if (char_I_actual_ppO2 < 195) | |
| 2036 CNS_fraction = 0.00401 + CNS_fraction; | |
| 2037 else if (char_I_actual_ppO2 < 200) | |
| 2038 CNS_fraction = 0.00517 + CNS_fraction; | |
| 2039 else if (char_I_actual_ppO2 < 230) | |
| 2040 CNS_fraction = 0.0209 + CNS_fraction; | |
| 2041 else | |
| 2042 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 2043 |
| 126 | 2044 if (CNS_fraction > 2.5) |
| 2045 CNS_fraction = 2.5; | |
| 2046 if (CNS_fraction < 0.0) | |
| 2047 CNS_fraction = 0.0; | |
| 2048 | |
| 2049 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2050 } |
| 116 | 2051 |
| 167 | 2052 ////////////////////////////////////////////////////////////////////////////// |
| 2053 // deco_calc_CNS_decrease_15min | |
| 2054 // | |
| 116 | 2055 // new in v.101 |
| 167 | 2056 // |
| 116 | 2057 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2058 // (Used in sleepmode, for low battery mode). |
| 167 | 2059 // |
| 116 | 2060 // Output: char_O_CNS_fraction |
| 2061 // Uses and Updates: CNS_fraction | |
| 167 | 2062 // |
| 116 | 2063 void deco_calc_CNS_decrease_15min(void) |
| 2064 { | |
|
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2065 RESET_C_STACK |
| 126 | 2066 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2067 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2068 } | |
| 116 | 2069 |
| 167 | 2070 ////////////////////////////////////////////////////////////////////////////// |
| 2071 // deco_calc_percentage | |
| 2072 // | |
| 116 | 2073 // new in v.101 |
| 167 | 2074 // |
| 116 | 2075 // calculates int_I_temp * char_I_temp / 100 |
| 2076 // output is int_I_temp | |
| 200 | 2077 // |
| 2078 // Used to compute NoFly remaining time. | |
| 116 | 2079 |
| 2080 void deco_calc_percentage(void) | |
| 2081 { | |
|
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|
2082 RESET_C_STACK |
| 203 | 2083 int_I_temp = (short)(int_I_temp * (char_I_temp / 100.0)); |
| 116 | 2084 } |
| 2085 | |
| 167 | 2086 ////////////////////////////////////////////////////////////////////////////// |
| 2087 | |
| 116 | 2088 void deco_push_tissues_to_vault(void) |
| 2089 { | |
| 167 | 2090 overlay unsigned char x; |
|
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2091 RESET_C_STACK |
| 167 | 2092 |
| 116 | 2093 cns_vault = CNS_fraction; |
| 167 | 2094 for (x=0;x<32;x++) |
| 2095 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2096 } |
| 167 | 2097 |
| 116 | 2098 void deco_pull_tissues_from_vault(void) |
| 2099 { | |
| 167 | 2100 overlay unsigned char x; |
|
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2101 RESET_C_STACK |
| 167 | 2102 |
| 116 | 2103 CNS_fraction = cns_vault; |
| 167 | 2104 for (x=0;x<32;x++) |
| 2105 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2106 } |
| 2107 | |
| 167 | 2108 ////////////////////////////////////////////////////////////////////////////// |
| 2109 // | |
| 184 | 2110 #ifndef CROSS_COMPILE |
| 2111 void main() {} | |
| 2112 #endif |