Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 201:e5c484d59a91
Gas switch debugging...
+ do stop at the exact gas switch depth.
+ keep selecting best gas in ascent simulation.
+ do not add gas-switch-delay for the already breathed gas.
*BUG* Keeps adding delay if the diver do not obey gas changes !
| author | JeanDo |
|---|---|
| date | Tue, 15 Feb 2011 20:04:37 +0100 |
| parents | 0a3ca358c684 |
| children | 2d9af08ed0ac |
| 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(). |
|
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68 // 2011/01/24: [jDG] Make ascenttime an int. 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); | |
|
169
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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 |
| 171 | 130 static void calc_nextdecodepth(void); |
| 116 | 131 |
| 200 | 132 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 133 #pragma udata bank4=0x400 |
| 116 | 134 |
| 192 | 135 static unsigned char low_depth; |
| 116 | 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 deco_diluent; // new in v.101 | |
| 179 static float const_ppO2; // new in v.101 | |
| 180 static float deco_ppO2_change; // new in v.101 | |
| 181 static float deco_ppO2; // new in v.101 | |
| 116 | 182 |
| 200 | 183 static unsigned char sim_gas_last_used; // Last used gas, to detected a gas switch. |
| 184 static unsigned char sim_gas_delay; // Delay added for gas switch (count down) [min]. | |
| 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 | |
| 193 static float deco_gas_change1; // new in v.101 | |
| 194 static float deco_gas_change2; // new in v.109 | |
| 195 static float deco_gas_change3; // new in v.109 | |
| 196 static float deco_gas_change4; // new in v.109 | |
| 197 static float deco_gas_change5; // new in v.109 | |
| 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 |
| 230 static float DBG_pres_surface; // new in v.108 | |
| 231 static float DBG_GF_low; // new in v.108 | |
| 232 static float DBG_GF_high; // new in v.108 | |
| 233 static float DBG_const_ppO2; // new in v.108 | |
| 234 static float DBG_deco_ppO2_change; // new in v.108 | |
| 235 static float DBG_deco_ppO2; // new in v.108 | |
| 236 static float DBG_deco_N2_ratio; // new in v.108 | |
| 237 static float DBG_deco_He_ratio; // new in v.108 | |
| 238 static float DBG_deco_gas_change; // 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... | |
| 116 | 261 rom const rom unsigned int md_pi[] = |
| 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 { |
| 167 | 408 overlay unsigned int 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 | |
| 184 | 476 static int 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_deco |
| 602 // temp_depth_limt | |
| 192 | 603 // low_depth |
| 167 | 604 // |
| 171 | 605 static void calc_nextdecodepth(void) |
| 167 | 606 { |
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607 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 608 if (char_I_deco_model == 1) |
| 609 { | |
| 192 | 610 // Recompute leading gas limit, at current depth: |
| 611 overlay float depth = (temp_deco - pres_surface) / 0.09995; | |
| 612 assert( depth >= 0.0 ); | |
| 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. | |
| 623 overlay unsigned char first_stop = 3 * (int)(0.99 + (sim_lead_tissue_limit - pres_surface) / 0.29985); | |
| 624 assert( first_stop < 128 ); | |
| 171 | 625 |
| 192 | 626 // Apply correction for the first stop. |
| 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 // Is it a new deepest first stop ? If yes this is the reference for |
| 631 // the varying gradient factor. So reset that: | |
| 632 if( first_stop > low_depth ) | |
| 633 { | |
| 634 // Store the deepest stop depth, as reference for GF_low. | |
| 635 low_depth = first_stop; | |
| 636 locked_GF_step = GF_delta / low_depth; | |
| 637 } | |
| 171 | 638 |
| 192 | 639 // Check all stops until one is higher than tolerated presure |
| 640 while(first_stop > 0) | |
| 641 { | |
| 642 overlay unsigned char next_stop; // Next index (0..30) | |
| 643 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 644 |
| 192 | 645 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 646 next_stop = 0; | |
| 647 else | |
| 648 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 649 if( first_stop == 3 ) | |
| 650 first_stop = char_I_depth_last_deco; | |
| 167 | 651 |
| 192 | 652 pres_stop = next_stop * 0.09995 // Meters to bar |
| 653 + pres_surface; | |
| 654 | |
| 655 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 656 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 657 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 658 |
| 192 | 659 // upper limit (lowest pressure tolerated): |
| 660 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 661 break; | |
| 662 | |
| 663 // Else, validate that stop and loop... | |
| 664 first_stop = next_stop; | |
| 665 } | |
| 171 | 666 |
| 192 | 667 // first_stop is the last validated depth found: |
| 668 temp_depth_limit = first_stop; // Stop depth, in meter. | |
| 669 temp_deco = first_stop * 0.09995 // Convert to bars, too. | |
| 670 + pres_surface; | |
| 671 if (first_stop > 0) | |
| 672 temp_deco += float_deco_distance; // Add security distance (bars too) | |
| 673 } | |
| 171 | 674 else |
| 192 | 675 { |
| 676 temp_deco = pres_surface; // surface ambient presure | |
| 677 temp_depth_limit = 0; // stop depth, in meter. | |
| 678 } | |
| 116 | 679 } |
| 167 | 680 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 681 { |
| 192 | 682 overlay float pres_gradient; |
| 683 | |
| 684 // Original model | |
| 116 | 685 // optimized in v.101 |
| 171 | 686 // char_I_depth_last_deco included in v.101 |
| 116 | 687 |
| 192 | 688 // Compute sim_lead_tissue_limit too, but just once. |
| 689 sim_limit(1.0); | |
| 690 | |
| 691 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 692 if (pres_gradient >= 0) |
| 116 | 693 { |
| 192 | 694 pres_gradient /= 0.29985; // Bar --> stop number; |
| 695 temp_depth_limit = 3 * (int) (pres_gradient + 0.99); // --> meter : depth for deco | |
| 171 | 696 if (temp_depth_limit == 0) // At surface ? |
| 116 | 697 temp_deco = pres_surface; |
| 698 else | |
| 699 { | |
| 171 | 700 if (temp_depth_limit < char_I_depth_last_deco) // Implement last stop at 4m/5m/6m... |
| 701 temp_depth_limit = char_I_depth_last_deco; | |
| 702 temp_deco = (temp_depth_limit * 0.09995) // depth for deco [bar] = depth | |
| 703 + float_deco_distance // + security margin | |
| 704 + pres_surface; // + surface ambient presure | |
| 705 } | |
| 706 } | |
| 116 | 707 else |
| 708 { | |
| 171 | 709 temp_deco = pres_surface; // surface ambient presure |
| 192 | 710 temp_depth_limit = 0; // stop depth, in meter. |
| 171 | 711 } |
| 712 } | |
| 167 | 713 } |
| 116 | 714 |
| 167 | 715 ////////////////////////////////////////////////////////////////////////////// |
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716 // copy_deco_table |
| 167 | 717 // |
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718 // Buffer the stops, once computed, so we can continue to display them |
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719 // while computing the next set. |
| 167 | 720 // |
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721 static void copy_deco_table(void) |
| 116 | 722 { |
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723 // Copy depth of the first (deepest) stop, because when reversing |
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724 // order, it will be hard to find... |
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725 char_O_first_deco_depth = internal_deco_depth[0]; |
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726 char_O_first_deco_time = internal_deco_time [0]; |
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727 |
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728 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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729 { |
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730 overlay unsigned char x, y; |
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731 |
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732 //---- First: search the first non-null depth |
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733 for(x=31; x != 0; --x) |
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734 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 735 |
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736 //---- Second: copy to output table (in reverse order) |
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737 for(y=0; y<32; y++, --x) |
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738 { |
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739 char_O_deco_depth[y] = internal_deco_depth[x]; |
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740 char_O_deco_time [y] = internal_deco_time [x]; |
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741 |
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742 // Stop only once the last transfer is done. |
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743 if( x == 0 ) break; |
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744 } |
| 116 | 745 |
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746 //---- Third: fill table end with null |
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747 for(y++; y<32; y++) |
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748 { |
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749 char_O_deco_time [y] = 0; |
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750 char_O_deco_depth[y] = 0; |
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751 } |
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752 } |
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753 else //---- Straight copy ------------------------------------------------ |
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754 { |
| 167 | 755 overlay unsigned char x; |
| 756 | |
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757 for(x=0; x<32; x++) |
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758 { |
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759 char_O_deco_depth[x] = internal_deco_depth[x]; |
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760 char_O_deco_time [x] = internal_deco_time [x]; |
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761 } |
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762 } |
| 167 | 763 } |
| 116 | 764 |
| 167 | 765 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 766 // temp_tissue_safety // |
| 167 | 767 // |
| 116 | 768 // outsourced in v.102 |
| 167 | 769 // |
| 770 // Apply safety factors for brand ZH-L16 model. | |
| 771 // | |
| 772 static void temp_tissue_safety(void) | |
| 116 | 773 { |
| 197 | 774 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 775 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 776 | |
| 167 | 777 if( char_I_deco_model == 0 ) |
| 116 | 778 { |
| 779 if (temp_tissue < 0.0) | |
| 126 | 780 temp_tissue *= float_desaturation_multiplier; |
| 116 | 781 else |
| 126 | 782 temp_tissue *= float_saturation_multiplier; |
| 116 | 783 } |
| 167 | 784 } |
| 116 | 785 |
| 167 | 786 ////////////////////////////////////////////////////////////////////////////// |
| 787 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 788 // ** THE JUMP-IN CODE ** |
| 789 // ** for the asm code ** | |
| 167 | 790 ////////////////////////////////////////////////////////////////////////////// |
| 791 ////////////////////////////////////////////////////////////////////////////// | |
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792 |
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793 void fillDataStack(void) |
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794 { |
| 184 | 795 #ifndef CROSS_COMPILE |
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796 _asm |
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797 LFSR 1,C_STACK |
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798 MOVLW 0xCC |
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799 loop: MOVWF POSTINC1,0 |
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800 TSTFSZ FSR1L,0 |
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801 BRA loop |
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802 |
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803 LFSR 1,C_STACK |
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804 LFSR 2,C_STACK |
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805 _endasm |
| 184 | 806 #endif |
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807 } |
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808 |
| 167 | 809 ////////////////////////////////////////////////////////////////////////////// |
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810 // When calling C code from ASM context, the data stack pointer and |
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811 // frames should be reset. Bank3 is dedicated to the stack (see the |
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812 // .lkr script). |
| 184 | 813 #ifdef CROSS_COMPILE |
| 814 # define RESET_C_STACK | |
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815 #else |
| 184 | 816 # ifdef __DEBUG |
| 817 # define RESET_C_STACK fillDataStack(); | |
| 818 # else | |
| 819 # define RESET_C_STACK \ | |
| 820 _asm \ | |
| 821 LFSR 1, C_STACK \ | |
| 822 LFSR 2, C_STACK \ | |
| 823 _endasm | |
| 824 # endif | |
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825 #endif |
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826 |
| 167 | 827 ////////////////////////////////////////////////////////////////////////////// |
|
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828 // Called every 2 seconds during diving. |
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829 // update tissues every time. |
| 184 | 830 // |
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831 // Every 6 seconds (or slower when TTS > 16): |
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832 // - update deco table (char_O_deco_time/depth) with new values. |
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833 // - update ascent time, |
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834 // - set status to zero (so we can check there is new results). |
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835 // |
| 116 | 836 void deco_calc_hauptroutine(void) |
| 837 { | |
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838 RESET_C_STACK |
| 116 | 839 calc_hauptroutine(); |
| 840 int_O_desaturation_time = 65535; | |
| 841 } | |
| 842 | |
| 167 | 843 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 844 // Reset decompression model: |
| 845 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 846 // + Reset last stop to 0m | |
| 847 // + Reset all model output. | |
| 116 | 848 void deco_clear_tissue(void) |
| 849 { | |
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850 RESET_C_STACK |
| 116 | 851 clear_tissue(); |
| 852 } | |
| 853 | |
| 167 | 854 ////////////////////////////////////////////////////////////////////////////// |
| 855 | |
| 116 | 856 void deco_calc_wo_deco_step_1_min(void) |
| 857 { | |
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858 RESET_C_STACK |
| 116 | 859 calc_wo_deco_step_1_min(); |
| 860 deco_calc_desaturation_time(); | |
| 861 } | |
| 862 | |
| 167 | 863 ////////////////////////////////////////////////////////////////////////////// |
| 864 | |
| 116 | 865 void deco_debug(void) |
| 866 { | |
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867 RESET_C_STACK |
| 116 | 868 } |
| 869 | |
| 167 | 870 ////////////////////////////////////////////////////////////////////////////// |
| 201 | 871 // Calculate gas switches |
| 872 // | |
| 873 // | |
| 874 void check_gas_switch(void) | |
| 875 { | |
| 876 overlay unsigned char temp_gas_switch = sim_gas_last_used; | |
| 877 overlay float switch_deco; | |
| 878 | |
| 879 calc_N2_ratio = N2_ratio; | |
| 880 calc_He_ratio = He_ratio; | |
| 881 | |
| 882 if (char_I_const_ppO2 == 0) | |
| 883 { | |
| 884 deco_diluent = temp_deco; | |
| 885 | |
| 886 // Keep selecting the best gas during the ascent simulation. | |
| 887 if( deco_gas_change1 && (temp_deco < deco_gas_change1)) | |
| 888 { | |
| 889 calc_N2_ratio = deco_N2_ratio1; | |
| 890 calc_He_ratio = deco_He_ratio1; | |
| 891 temp_gas_switch = 1; | |
| 892 switch_deco = deco_gas_change1; | |
| 893 } | |
| 894 if(deco_gas_change2 && (temp_deco < deco_gas_change2)) | |
| 895 { | |
| 896 calc_N2_ratio = char_I_deco_N2_ratio2 * 0.01; | |
| 897 calc_He_ratio = char_I_deco_He_ratio2 * 0.01; | |
| 898 temp_gas_switch = 2; | |
| 899 switch_deco = deco_gas_change2; | |
| 900 } | |
| 901 if(deco_gas_change3 && (temp_deco < deco_gas_change3)) | |
| 902 { | |
| 903 calc_N2_ratio = char_I_deco_N2_ratio3 * 0.01; | |
| 904 calc_He_ratio = char_I_deco_He_ratio3 * 0.01; | |
| 905 temp_gas_switch = 3; | |
| 906 switch_deco = deco_gas_change3; | |
| 907 } | |
| 908 if(deco_gas_change4 && (temp_deco < deco_gas_change4)) | |
| 909 { | |
| 910 calc_N2_ratio = char_I_deco_N2_ratio4 * 0.01; | |
| 911 calc_He_ratio = char_I_deco_He_ratio4 * 0.01; | |
| 912 temp_gas_switch = 4; | |
| 913 switch_deco = deco_gas_change4; | |
| 914 } | |
| 915 if(deco_gas_change5 && (temp_deco < deco_gas_change5)) | |
| 916 { | |
| 917 calc_N2_ratio = char_I_deco_N2_ratio5 * 0.01; | |
| 918 calc_He_ratio = char_I_deco_He_ratio5 * 0.01; | |
| 919 temp_gas_switch = 5; | |
| 920 switch_deco = deco_gas_change5; | |
| 921 } | |
| 922 } | |
| 923 | |
| 924 // Should detect gas switch only when gas do changes... | |
| 925 // sim_gas_last_used: used to detect just once in each ascent simu. | |
| 926 // N2_ratio : used to detect when already breathing that gas. | |
| 927 if( sim_gas_last_used < temp_gas_switch | |
| 928 && (calc_N2_ratio != N2_ratio || calc_He_ratio != He_ratio)) | |
| 929 { | |
| 930 sim_gas_last_used = temp_gas_switch; | |
| 931 sim_gas_delay = read_custom_function(55); | |
| 932 | |
| 933 // Apply depth correction ONLY if there delay is not null: | |
| 934 if( sim_gas_delay > 0 ) | |
| 935 { | |
| 936 temp_deco = switch_deco - float_deco_distance; | |
| 937 temp_depth_limit = (temp_deco - pres_surface) / 0.09985; | |
| 938 } | |
| 939 } | |
| 940 | |
| 941 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 942 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 943 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 944 } | |
| 945 | |
| 946 ////////////////////////////////////////////////////////////////////////////// | |
| 947 // | |
| 948 static void alveolar_presures(void) | |
| 949 { | |
| 950 if (char_I_const_ppO2 != 0) | |
| 951 { | |
| 952 if (temp_deco > deco_ppO2_change) | |
| 953 { | |
| 954 deco_diluent = ((temp_deco - const_ppO2)/(N2_ratio + He_ratio)); | |
| 955 } | |
| 956 else | |
| 957 { | |
| 958 deco_diluent = ((temp_deco - deco_ppO2)/(N2_ratio + He_ratio)); | |
| 959 } | |
| 960 } | |
| 961 | |
| 962 if (deco_diluent > temp_deco) | |
| 963 deco_diluent = temp_deco; | |
| 964 if (deco_diluent > ppWVapour) | |
| 965 { | |
| 966 ppO2 = calc_N2_ratio * (deco_diluent - ppWVapour); | |
| 967 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); | |
| 968 } | |
| 969 else | |
| 970 { | |
| 971 ppO2 = 0.0; | |
| 972 ppHe = 0.0; | |
| 973 } | |
| 974 assert( 0.0 <= ppO2 && ppO2 < 14.0 ); | |
| 975 assert( 0.0 <= ppHe && ppHe < 14.0 ); | |
| 976 } | |
| 977 | |
| 978 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 979 // clear_tissue |
| 980 // | |
| 165 | 981 // optimized in v.101 (var_N2_a) |
| 167 | 982 // |
| 983 // preload tissues with standard pressure for the given ambient pressure. | |
| 984 // Note: fixed N2_ratio for standard air. | |
| 201 | 985 // |
| 167 | 986 static void clear_tissue(void) |
| 116 | 987 { |
| 988 flag_in_divemode = 0; | |
| 989 int_O_DBS_bitfield = 0; | |
| 990 int_O_DBS2_bitfield = 0; | |
| 991 int_O_DBG_pre_bitfield = 0; | |
| 992 int_O_DBG_post_bitfield = 0; | |
| 993 char_O_NDL_at_20mtr = 255; | |
| 994 | |
| 167 | 995 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 996 N2_ratio = 0.7902; | |
| 126 | 997 pres_respiration = (float)int_I_pres_respiration / 1000.0; |
| 164 | 998 |
| 167 | 999 for(ci=0; ci<16; ci++) |
| 126 | 1000 { |
| 197 | 1001 // cycle through the 16 Bühlmann tissues |
| 200 | 1002 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
| 164 | 1003 pres_tissue[ci] = p; |
| 197 | 1004 |
| 184 | 1005 read_buhlmann_coefficients(-1); |
| 165 | 1006 |
| 1007 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 1008 if( p < 0.0 ) |
| 1009 p = 0.0; | |
| 1010 pres_tissue_limit[ci] = p; | |
| 1011 | |
| 197 | 1012 // cycle through the 16 Bühlmann tissues for Helium |
| 167 | 1013 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1014 } // for 0 to 16 |
| 116 | 1015 |
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1016 clear_deco_table(); |
| 126 | 1017 char_O_deco_status = 0; |
| 1018 char_O_nullzeit = 0; | |
| 168 | 1019 int_O_ascenttime = 0; |
| 126 | 1020 char_O_gradient_factor = 0; |
| 1021 char_O_relative_gradient_GF = 0; | |
| 197 | 1022 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 1023 } |
| 116 | 1024 |
| 167 | 1025 ////////////////////////////////////////////////////////////////////////////// |
| 1026 // calc_hauptroutine | |
| 1027 // | |
| 1028 // this is the major code in dive mode calculates: | |
| 116 | 1029 // the tissues, |
| 167 | 1030 // the bottom time, |
| 1031 // and simulates the ascend with all deco stops. | |
| 171 | 1032 // |
| 1033 // The deco_state sequence is : | |
| 1034 // 3 (at surface) | |
| 1035 // +---> 0 : calc nullzeit | |
| 1036 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1037 // | +-> 1 : simulate up to 16min of stops. | |
| 1038 // | +------< not finished | |
| 1039 // +--------< finish | |
| 1040 // | |
| 167 | 1041 static void calc_hauptroutine(void) |
| 116 | 1042 { |
| 186 | 1043 static float backup_GF_step; |
| 192 | 1044 static unsigned char backup_low_depth; |
| 201 | 1045 static unsigned char backup_gas_used; |
| 186 | 1046 |
| 116 | 1047 calc_hauptroutine_data_input(); |
| 1048 | |
| 1049 if(!flag_in_divemode) | |
| 1050 { | |
| 1051 flag_in_divemode = 1; | |
| 1052 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1053 } | |
| 1054 else | |
| 1055 check_pre_dbg(); | |
| 1056 | |
| 1057 calc_hauptroutine_update_tissues(); | |
| 1058 calc_gradient_factor(); | |
| 1059 | |
| 167 | 1060 // toggle between calculation for nullzeit (bottom time), |
| 1061 // deco stops | |
| 1062 // and more deco stops (continue) | |
| 1063 switch( char_O_deco_status ) | |
| 116 | 1064 { |
| 186 | 1065 case 3: //---- At surface: start a new dive ------------------------------ |
| 1066 clear_deco_table(); | |
| 1067 copy_deco_table(); | |
| 200 | 1068 int_O_ascenttime = 0; // Reset DTR. |
| 1069 char_O_nullzeit = 0; // Reset bottom time. | |
| 1070 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 201 | 1071 |
| 1072 // Values that should be reset just once for the full real dive | |
| 1073 // (not every time we simulate an ascent): | |
| 1074 low_depth = 0; // Reset GF history. | |
| 192 | 1075 backup_low_depth = 255; // backup is empty... |
| 201 | 1076 |
| 1077 // No gas change (yet) for this ascent simulation. | |
| 1078 sim_gas_last_used = 0; | |
| 186 | 1079 break; |
| 1080 | |
| 167 | 1081 case 0: //---- bottom time ----------------------------------------------- |
| 1082 calc_nullzeit(); | |
| 1083 check_ndl(); | |
| 186 | 1084 char_O_deco_status = 2; // calc ascent next time. |
| 1085 break; | |
| 1086 | |
| 1087 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 201 | 1088 // Backup ascention state, so the simulation won't polute the real |
| 1089 // dive data. | |
| 186 | 1090 backup_GF_step = locked_GF_step; |
| 192 | 1091 backup_low_depth = low_depth; |
| 201 | 1092 backup_gas_used = sim_gas_last_used; |
| 186 | 1093 |
| 1094 sim_ascent_to_first_stop(); | |
| 201 | 1095 |
| 1096 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
| 167 | 1097 break; |
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1099 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1100 calc_hauptroutine_calc_deco(); |
| 186 | 1101 |
| 1102 // If simulation is finished, restore the GF low reference, so that | |
| 1103 // next ascent simulation is done from the current depth: | |
| 192 | 1104 if( char_O_deco_status == 0 && backup_low_depth != 255) |
| 186 | 1105 { |
| 1106 locked_GF_step = backup_GF_step; | |
| 192 | 1107 low_depth = backup_low_depth; |
| 201 | 1108 sim_gas_last_used = backup_gas_used; |
| 192 | 1109 backup_low_depth = 255; |
| 186 | 1110 } |
| 167 | 1111 break; |
| 116 | 1112 } |
| 167 | 1113 |
| 116 | 1114 check_post_dbg(); |
| 1115 } | |
| 1116 | |
| 167 | 1117 ////////////////////////////////////////////////////////////////////////////// |
| 1118 // calc_hauptroutine_data_input | |
| 1119 // | |
| 1120 // Reset all C-code dive parameters from their ASM-code values. | |
| 1121 // Detect gas change condition. | |
| 1122 // | |
| 116 | 1123 void calc_hauptroutine_data_input(void) |
| 1124 { | |
| 167 | 1125 overlay int int_temp; |
| 126 | 1126 |
| 197 | 1127 pres_respiration = int_I_pres_respiration * 0.001; |
| 1128 pres_surface = int_I_pres_surface * 0.001; | |
| 1129 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1130 He_ratio = char_I_He_ratio * 0.01; | |
| 1131 deco_N2_ratio1 = char_I_deco_N2_ratio1 * 0.01; | |
| 1132 deco_He_ratio1 = char_I_deco_He_ratio1 * 0.01; | |
| 1133 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1134 |
| 126 | 1135 // ____________________________________________________ |
| 1136 // | |
| 1137 // _____________ G A S _ C H A N G E S ________________ | |
| 1138 // ____________________________________________________ | |
| 1139 | |
| 1140 int_temp = (int_I_pres_respiration - int_I_pres_surface) + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 1141 | |
| 200 | 1142 deco_gas_change1 = 0.0; |
| 1143 deco_gas_change2 = 0.0; | |
| 1144 deco_gas_change3 = 0.0; | |
| 1145 deco_gas_change4 = 0.0; | |
| 1146 deco_gas_change5 = 0.0; | |
| 116 | 1147 |
| 167 | 1148 if(char_I_deco_gas_change1) |
| 126 | 1149 { |
| 167 | 1150 overlay int int_temp2 = ((int)char_I_deco_gas_change1) * 100; |
| 126 | 1151 if(int_temp > int_temp2) |
| 1152 { | |
| 167 | 1153 deco_gas_change1 = (float)char_I_deco_gas_change1 / 9.995 + pres_surface; |
| 1154 deco_gas_change1 += float_deco_distance; | |
| 126 | 1155 } |
| 1156 } | |
| 1157 if(char_I_deco_gas_change2) | |
| 1158 { | |
| 167 | 1159 overlay int int_temp2 = ((int)char_I_deco_gas_change2) * 100; |
| 126 | 1160 if(int_temp > int_temp2) |
| 1161 { | |
| 1162 deco_gas_change2 = (float)char_I_deco_gas_change2 / 9.995 + pres_surface; | |
| 1163 deco_gas_change2 += float_deco_distance; | |
| 1164 } | |
| 1165 } | |
| 1166 if(char_I_deco_gas_change3) | |
| 1167 { | |
| 167 | 1168 overlay int int_temp2 = ((int)char_I_deco_gas_change3) * 100; |
| 126 | 1169 if(int_temp > int_temp2) |
| 1170 { | |
| 1171 deco_gas_change3 = (float)char_I_deco_gas_change3 / 9.995 + pres_surface; | |
| 1172 deco_gas_change3 += float_deco_distance; | |
| 1173 } | |
| 1174 } | |
| 1175 if(char_I_deco_gas_change4) | |
| 1176 { | |
| 167 | 1177 overlay int int_temp2 = ((int)char_I_deco_gas_change4) * 100; |
| 126 | 1178 if(int_temp > int_temp2) |
| 1179 { | |
| 1180 deco_gas_change4 = (float)char_I_deco_gas_change4 / 9.995 + pres_surface; | |
| 1181 deco_gas_change4 += float_deco_distance; | |
| 1182 } | |
| 1183 } | |
| 1184 if(char_I_deco_gas_change5) | |
| 1185 { | |
| 167 | 1186 overlay int int_temp2 = ((int)char_I_deco_gas_change5) * 100; |
| 126 | 1187 if(int_temp > int_temp2) |
| 1188 { | |
| 1189 deco_gas_change5 = (float)char_I_deco_gas_change5 / 9.995 + pres_surface; | |
| 1190 deco_gas_change5 += float_deco_distance; | |
| 1191 } | |
| 1192 } | |
| 116 | 1193 |
| 197 | 1194 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1195 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
| 1196 + pres_surface | |
| 1197 + float_deco_distance; | |
| 1198 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1199 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1200 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1201 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1202 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1203 GF_delta = GF_high - GF_low; |
| 116 | 1204 } |
| 1205 | |
| 167 | 1206 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1207 // |
| 1208 // | |
| 116 | 1209 void calc_hauptroutine_update_tissues(void) |
| 1210 { | |
| 197 | 1211 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1212 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1213 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 1214 | |
| 1215 if (char_I_const_ppO2 == 0) // new in v.101 | |
| 167 | 1216 pres_diluent = pres_respiration; // new in v.101 |
| 186 | 1217 else |
| 1218 { | |
| 167 | 1219 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
| 186 | 1220 if (pres_diluent > pres_respiration) // new in v.101 |
| 1221 pres_diluent = pres_respiration; // new in v.101 | |
| 1222 } | |
| 200 | 1223 if (pres_diluent > ppWVapour) // new in v.101 |
| 116 | 1224 { |
| 200 | 1225 ppO2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 1226 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 | |
| 116 | 1227 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1228 } | |
| 167 | 1229 else // new in v.101 |
| 116 | 1230 { |
| 200 | 1231 ppO2 = 0.0; // new in v.101 |
| 1232 ppHe = 0.0; // new in v.101 | |
| 116 | 1233 char_O_diluent = 0; |
| 1234 } | |
| 1235 | |
| 1236 if(!char_I_step_is_1min) | |
| 192 | 1237 calc_tissue(0); |
| 116 | 1238 else |
| 192 | 1239 calc_tissue(1); |
| 186 | 1240 |
| 192 | 1241 // Calc limit for surface, ie. GF_high. |
| 1242 calc_limit(GF_high); | |
| 186 | 1243 |
| 192 | 1244 int_O_gtissue_limit = (int)(calc_lead_tissue_limit * 1000); |
| 1245 int_O_gtissue_press = (int)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 1246 | |
| 1247 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1248 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1249 { |
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1250 char_O_nullzeit = 0; // deco necessary |
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1251 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1252 } |
| 171 | 1253 } |
| 1254 | |
| 116 | 1255 |
| 167 | 1256 ////////////////////////////////////////////////////////////////////////////// |
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1257 // Compute stops. |
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1258 // |
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1259 // Note: because this can be very long, break on 16 iterations, and set state |
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1260 // to 0 when finished, or to 1 when needing to continue. |
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1261 // |
| 116 | 1262 void calc_hauptroutine_calc_deco(void) |
| 1263 { | |
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1264 overlay unsigned char loop; |
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1265 |
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1266 for(loop = 0; loop < 16; ++loop) |
| 116 | 1267 { |
| 197 | 1268 // Do not ascent while doing a gas switch. |
| 1269 if( sim_gas_delay == 0 ) | |
| 1270 calc_nextdecodepth(); | |
| 116 | 1271 |
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1272 //---- Finish computations once surface is reached ------------------- |
| 200 | 1273 if( temp_depth_limit == 0 ) |
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1274 { |
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1275 copy_deco_table(); |
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1276 calc_ascenttime(); |
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1277 char_O_deco_status = 0; // calc nullzeit next time. |
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1278 return; |
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1279 } |
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1280 |
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1281 //---- Else, continue simulating the stops --------------------------- |
| 197 | 1282 if( sim_gas_delay == 0 ) |
| 1283 check_gas_switch(); // Calculate N2_ratio and He_ratio. | |
| 201 | 1284 if( sim_gas_delay > 0 ) |
| 197 | 1285 sim_gas_delay--; |
| 1286 | |
| 1287 alveolar_presures(); // Updates ppN2 and ppHe. | |
| 186 | 1288 |
| 192 | 1289 sim_tissue(1); // Simulate compartiments for 1 minute. |
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1290 update_deco_table(); // Add one minute stops. |
| 116 | 1291 } |
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1292 |
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1293 // Surface not reached, need more stops... |
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1294 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1295 } |
| 1296 | |
| 167 | 1297 ////////////////////////////////////////////////////////////////////////////// |
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1298 // Simulation ascention to first deco stop. |
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1299 // |
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1300 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1301 // there is no need to break on more that 16 iterations |
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1302 // (or we are already in deep shit). |
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1303 // |
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1304 void sim_ascent_to_first_stop(void) |
| 116 | 1305 { |
| 171 | 1306 update_startvalues(); |
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1307 clear_deco_table(); |
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1308 |
| 200 | 1309 temp_deco = pres_respiration; // Starts from current real depth. |
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1310 |
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1311 // Loop until first top or surface is reached. |
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1312 for(;;) |
| 116 | 1313 { |
| 197 | 1314 // Do not ascent while doing a gas switch. |
| 1315 if( sim_gas_delay == 0 ) | |
| 1316 temp_deco -= 1.0; // Ascent 1 min, at 10m/min. == 1bar/min. | |
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1317 |
| 192 | 1318 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1319 sim_limit(GF_low); | |
| 116 | 1320 |
| 192 | 1321 // Did we reach first stop ? |
| 1322 if( temp_deco <= sim_lead_tissue_limit ) | |
| 201 | 1323 { |
| 1324 temp_deco = sim_lead_tissue_limit; | |
| 1325 break; // Return stop found ! | |
| 1326 } | |
| 1327 | |
| 171 | 1328 // Next stop is surface ? |
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1329 if( temp_deco <= pres_surface ) |
| 201 | 1330 break; // Yes: finished ! |
| 171 | 1331 |
| 197 | 1332 //---- Simulat gas switches |
| 1333 if( sim_gas_delay > 0 ) | |
| 1334 { | |
| 1335 sim_gas_delay--; // Decrement switch delay | |
| 1336 update_deco_table(); // And mark stop in table | |
| 1337 } | |
| 1338 else | |
| 1339 { | |
| 1340 temp_deco += 0.5; // Check gas change 5 meter below new depth. | |
| 171 | 1341 check_gas_switch(); |
| 197 | 1342 temp_deco -= 0.5; // Back to new depth. |
| 1343 } | |
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1344 |
| 192 | 1345 // Then simulate with the new gas pressures... (1min) |
| 197 | 1346 alveolar_presures(); // Calculated at true depth ! |
| 192 | 1347 sim_tissue(1); |
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1348 } |
| 167 | 1349 } |
| 116 | 1350 |
| 167 | 1351 ////////////////////////////////////////////////////////////////////////////// |
| 1352 // calc_tissue | |
| 1353 // | |
| 116 | 1354 // optimized in v.101 |
| 167 | 1355 // |
| 184 | 1356 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1357 { |
| 126 | 1358 for (ci=0;ci<16;ci++) |
| 1359 { | |
| 184 | 1360 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1361 |
| 126 | 1362 // N2 |
| 200 | 1363 temp_tissue = (ppO2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1364 temp_tissue_safety(); |
| 167 | 1365 pres_tissue[ci] += temp_tissue; |
| 165 | 1366 |
| 126 | 1367 // He |
| 200 | 1368 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1369 temp_tissue_safety(); |
| 167 | 1370 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1371 } |
| 167 | 1372 } |
| 116 | 1373 |
| 167 | 1374 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1375 // calc_limit |
| 167 | 1376 // |
| 192 | 1377 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1378 // |
| 192 | 1379 static void calc_limit(PARAMETER float GF_current) |
| 167 | 1380 { |
| 192 | 1381 char_O_gtissue_no = 255; |
| 1382 calc_lead_tissue_limit = 0.0; | |
| 1383 | |
| 1384 for (ci=0;ci<16;ci++) | |
| 1385 { | |
| 1386 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1387 | |
| 1388 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
| 1389 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
| 1390 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1391 |
| 192 | 1392 // Apply the Eric Baker's varying gradient factor correction. |
| 1393 // Note: the correction factor depends both on GF and b, | |
| 1394 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1395 // so that can change who is the leading gas... | |
| 1396 // Note: Also depends of the GF. So the calcul is different for | |
| 1397 // GF_low, current GF, or GF_high... | |
| 1398 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1399 // hence what would happend at surface, | |
| 1400 // hence at GF_high. | |
| 1401 if( char_I_deco_model == 1 ) | |
| 1402 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1403 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1404 else | |
| 1405 p = (p - var_N2_a) * var_N2_b; | |
| 1406 if( p < 0 ) p = 0; | |
| 1407 | |
| 1408 pres_tissue_limit[ci] = p; | |
| 1409 if( p > calc_lead_tissue_limit ) | |
| 1410 { | |
| 1411 char_O_gtissue_no = ci; | |
| 1412 calc_lead_tissue_limit = p; | |
| 1413 } | |
| 1414 } | |
| 197 | 1415 |
| 1416 assert( char_O_gtissue_no < 16 ); | |
| 1417 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1418 } |
| 1419 | |
| 1420 ////////////////////////////////////////////////////////////////////////////// | |
| 1421 // calc_nullzeit | |
| 1422 // | |
| 1423 // calculates the remaining bottom time | |
| 1424 // | |
| 1425 // unchanged in v.101 | |
| 1426 // | |
| 1427 static void calc_nullzeit(void) | |
| 1428 { | |
| 1429 overlay int loop; | |
| 200 | 1430 update_startvalues(); |
| 167 | 1431 |
| 116 | 1432 char_O_nullzeit = 0; |
| 167 | 1433 for(loop = 1; loop <= 17; loop++) |
| 116 | 1434 { |
| 1435 backup_sim_pres_tissue(); | |
| 197 | 1436 sim_tissue(2); // 10 min. |
| 192 | 1437 sim_limit(GF_high); |
| 167 | 1438 |
| 192 | 1439 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1440 { |
| 1441 restore_sim_pres_tissue(); | |
| 1442 break; | |
| 1443 } | |
| 1444 // Validate once we know its good. | |
| 1445 char_O_nullzeit += 10; | |
| 167 | 1446 } |
| 1447 | |
| 116 | 1448 if (char_O_nullzeit < 60) |
| 1449 { | |
| 167 | 1450 for(loop=1; loop <= 10; loop++) |
| 116 | 1451 { |
| 197 | 1452 sim_tissue(1); // 1 min |
| 192 | 1453 sim_limit(GF_high); |
| 1454 | |
| 1455 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1456 break; |
| 1457 char_O_nullzeit++; | |
| 167 | 1458 } |
| 185 | 1459 } |
| 1460 } | |
| 116 | 1461 |
| 167 | 1462 ////////////////////////////////////////////////////////////////////////////// |
| 1463 // backup_sim_pres_tissue | |
| 1464 // | |
| 116 | 1465 void backup_sim_pres_tissue(void) |
| 1466 { | |
| 167 | 1467 overlay unsigned char x; |
| 1468 | |
| 1469 for(x = 0; x<32; x++) | |
| 126 | 1470 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1471 } |
| 116 | 1472 |
| 167 | 1473 ////////////////////////////////////////////////////////////////////////////// |
| 1474 // restore_sim_pres_tissue | |
| 1475 // | |
| 116 | 1476 void restore_sim_pres_tissue(void) |
| 1477 { | |
| 167 | 1478 overlay unsigned char x; |
| 1479 | |
| 1480 for(x = 0; x<32; x++) | |
| 126 | 1481 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1482 } |
| 116 | 1483 |
| 167 | 1484 ////////////////////////////////////////////////////////////////////////////// |
| 1485 // calc_ascenttime | |
| 1486 // | |
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1487 static void calc_ascenttime(void) |
| 116 | 1488 { |
| 126 | 1489 if (pres_respiration > pres_surface) |
| 1490 { | |
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1491 overlay unsigned char x; |
| 168 | 1492 |
| 192 | 1493 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
| 1494 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
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1495 if (ascent < 0.0) |
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1496 ascent = 0.0; |
| 192 | 1497 int_O_ascenttime = (unsigned int)(ascent + 0.99); |
| 168 | 1498 |
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1499 for(x=0; x<32 && internal_deco_depth[x]; x++) |
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1500 int_O_ascenttime += (unsigned int)internal_deco_time[x]; |
| 126 | 1501 } |
| 1502 else | |
| 168 | 1503 int_O_ascenttime = 0; |
| 167 | 1504 } |
| 116 | 1505 |
| 167 | 1506 ////////////////////////////////////////////////////////////////////////////// |
| 1507 // update_startvalues | |
| 1508 // | |
| 116 | 1509 // updated in v.102 |
| 167 | 1510 // |
| 116 | 1511 void update_startvalues(void) |
| 1512 { | |
| 167 | 1513 overlay unsigned char x; |
| 116 | 1514 |
| 201 | 1515 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1516 for (x = 0;x<16;x++) |
| 1517 { | |
| 1518 sim_pres_tissue[x] = pres_tissue[x]; | |
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1519 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1520 sim_pres_tissue_limit[x] = pres_tissue_limit[x]; |
| 1521 } | |
| 197 | 1522 |
| 201 | 1523 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1524 sim_lead_tissue_limit = 0.0; |
| 1525 sim_lead_tissue_no = 255; | |
| 167 | 1526 } |
| 116 | 1527 |
| 167 | 1528 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1529 // sim_tissue |
| 167 | 1530 // |
| 116 | 1531 // optimized in v.101 |
| 167 | 1532 // |
| 1533 // Function very simular to calc_tissue, but: | |
| 1534 // + Use a 1min or 10min period. | |
| 1535 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1536 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1537 { |
| 192 | 1538 for(ci=0; ci<16; ci++) |
| 126 | 1539 { |
| 184 | 1540 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1541 |
| 126 | 1542 // N2 |
| 200 | 1543 temp_tissue = (ppO2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1544 temp_tissue_safety(); |
| 167 | 1545 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1546 |
| 1547 // He | |
| 200 | 1548 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1549 temp_tissue_safety(); |
| 167 | 1550 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1551 } |
| 167 | 1552 } |
| 116 | 1553 |
| 167 | 1554 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1555 // sim_limit() |
| 1556 // | |
| 1557 // New in v.111 | |
| 1558 // | |
| 1559 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1560 // different depth, because it depends on current gradient factor. | |
| 167 | 1561 // |
| 192 | 1562 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1563 { |
| 192 | 1564 sim_lead_tissue_limit = 0.0; |
| 1565 sim_lead_tissue_no = 255; | |
| 1566 | |
| 1567 for(ci=0; ci<16; ci++) | |
| 1568 { | |
| 1569 overlay float p = sim_pres_tissue[ci] + (sim_pres_tissue+16)[ci]; | |
| 1570 | |
| 1571 read_buhlmann_coefficients(-1); | |
| 1572 var_N2_a = (var_N2_a * sim_pres_tissue[ci] + var_He_a * (sim_pres_tissue+16)[ci]) / p; | |
| 1573 var_N2_b = (var_N2_b * sim_pres_tissue[ci] + var_He_b * (sim_pres_tissue+16)[ci]) / p; | |
| 1574 | |
| 1575 // Apply the Eric Baker's varying gradient factor correction. | |
| 1576 // Note: the correction factor depends both on GF and b, | |
| 1577 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1578 // so that can change who is the leading gas... | |
| 1579 // Note: Also depends of the GF_current... | |
| 1580 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1581 // hence what would happend at surface, | |
| 1582 // hence at GF_high. | |
| 1583 if( char_I_deco_model == 1 ) | |
| 1584 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1585 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1586 else | |
| 1587 p = (p - var_N2_a) * var_N2_b; | |
| 1588 if( p < 0 ) p = 0; | |
| 1589 | |
| 1590 sim_pres_tissue_limit[ci] = p; | |
| 1591 if( p > sim_lead_tissue_limit ) | |
| 1592 { | |
| 1593 sim_lead_tissue_no = ci; | |
| 1594 sim_lead_tissue_limit = p; | |
| 1595 } | |
| 1596 } // for ci | |
| 197 | 1597 |
| 1598 assert( sim_lead_tissue_no < 16 ); | |
| 1599 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0); | |
| 167 | 1600 } |
| 116 | 1601 |
| 167 | 1602 ////////////////////////////////////////////////////////////////////////////// |
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1603 // clear_deco_table |
| 167 | 1604 // |
| 1605 // unchanged in v.101 | |
| 1606 // | |
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1607 static void clear_deco_table(void) |
| 116 | 1608 { |
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1609 overlay unsigned char x; |
|
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1610 |
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1611 for(x=0; x<32; ++x) |
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1612 { |
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1613 internal_deco_time [x] = 0; |
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1614 internal_deco_depth[x] = 0; |
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1615 } |
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1616 } |
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1617 |
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1618 ////////////////////////////////////////////////////////////////////////////// |
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1619 // update_deco_table |
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1620 // |
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1621 // Add 1 min to current stop. |
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1622 // |
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1623 // Inputs: |
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1624 // temp_depth_limit = stop's depth, in meters. |
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1625 // In/Out: |
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1626 // internal_deco_depth[] : depth (in meters) of each stops. |
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1627 // internal_deco_time [] : time (in minutes) of each stops. |
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1628 // |
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1629 static void update_deco_table() |
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1630 { |
| 192 | 1631 overlay unsigned char x; |
| 200 | 1632 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
|
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1633 |
| 192 | 1634 for(x=0; x<32; ++x) |
| 1635 { | |
| 200 | 1636 if( internal_deco_depth[x] == temp_depth_limit ) |
| 192 | 1637 { |
| 1638 // Do not overflow (max 255') | |
| 1639 if( internal_deco_time[x] < 255 ) | |
| 1640 { | |
| 1641 internal_deco_time[x]++; | |
| 1642 return; | |
| 1643 } | |
| 1644 // But store extra in the next stop... | |
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1645 } |
| 192 | 1646 |
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1647 if( internal_deco_depth[x] == 0 ) |
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1648 { |
| 192 | 1649 internal_deco_depth[x] = temp_depth_limit; |
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1650 internal_deco_time[x] = 1; |
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1651 return; |
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1652 } |
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1653 } |
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1654 |
| 192 | 1655 // Can't store stops at more than 96m. |
| 1656 // Or stops at less that 3m too. | |
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1657 // Just do nothing with that... |
| 167 | 1658 } |
| 116 | 1659 |
| 167 | 1660 ////////////////////////////////////////////////////////////////////////////// |
| 1661 // calc_gradient_factor | |
| 1662 // | |
| 165 | 1663 // optimized in v.101 (var_N2_a) |
| 116 | 1664 // new code in v.102 |
| 167 | 1665 // |
| 1666 static void calc_gradient_factor(void) | |
| 116 | 1667 { |
| 197 | 1668 overlay float gf; |
| 1669 assert( char_O_gtissue_no < 16 ); | |
| 1670 | |
| 116 | 1671 // tissue > respiration (entsaettigungsvorgang) |
| 1672 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1673 // dh. 0% = respiration == tissue | |
| 1674 // dh. 100% = respiration == limit | |
| 197 | 1675 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
| 1676 if( temp_tissue < pres_respiration ) | |
| 1677 gf = 0.0; | |
| 1678 else | |
| 1679 { | |
| 1680 gf = (temp_tissue - pres_respiration) | |
| 1681 / (temp_tissue - pres_tissue_limit[char_O_gtissue_no]) | |
| 1682 * 100.0; | |
| 1683 if( gf > 255.0 ) gf = 255.0; | |
| 1684 if( gf < 0.0 ) gf = 0.0; | |
| 1685 } | |
| 1686 char_O_gradient_factor = (unsigned char)gf; | |
| 116 | 1687 |
| 1688 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1689 { | |
| 197 | 1690 overlay float rgf; |
| 1691 | |
| 1692 if( low_depth == 0 ) | |
| 1693 rgf = GF_high; | |
| 1694 else | |
| 1695 { | |
| 1696 overlay float temp1 = low_depth * 0.09995; | |
| 1697 overlay float temp2 = pres_respiration - pres_surface; | |
| 186 | 1698 |
| 197 | 1699 if (temp2 <= 0) |
| 1700 rgf = GF_high; | |
| 1701 else if (temp2 >= temp1) | |
| 1702 rgf = GF_low; | |
| 1703 else | |
| 1704 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1705 } | |
| 186 | 1706 |
| 197 | 1707 rgf = gf / rgf; // gf is already in percent |
| 1708 if( rgf < 0.0 ) rgf = 0.0; | |
| 1709 if( rgf > 255.0 ) rgf = 255.0; | |
| 1710 char_O_relative_gradient_GF = (unsigned char)rgf; | |
| 116 | 1711 } // calc relative gradient factor |
| 1712 else | |
| 1713 { | |
| 186 | 1714 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1715 } |
| 167 | 1716 } |
| 116 | 1717 |
| 167 | 1718 ////////////////////////////////////////////////////////////////////////////// |
| 1719 // deco_calc_desaturation_time | |
| 1720 // | |
| 116 | 1721 // FIXED N2_ratio |
| 1722 // unchanged in v.101 | |
| 167 | 1723 // |
| 116 | 1724 void deco_calc_desaturation_time(void) |
| 1725 { | |
| 184 | 1726 overlay unsigned int desat_time; // For a particular compartiment, in min. |
| 200 | 1727 overlay float temp1; |
| 197 | 1728 overlay float temp2; |
| 1729 overlay float temp3; | |
| 1730 overlay float temp4; | |
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1731 RESET_C_STACK |
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1732 |
| 126 | 1733 N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann |
| 1734 pres_surface = (float)int_I_pres_surface / 1000.0; | |
| 200 | 1735 ppO2 = N2_ratio * (pres_surface - ppWVapour); |
| 126 | 1736 int_O_desaturation_time = 0; |
| 1737 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 1738 | |
| 1739 for (ci=0;ci<16;ci++) | |
| 1740 { | |
| 200 | 1741 overlay float var_N2_halftime = buhlmann_ht[ci]; |
| 1742 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; | |
| 116 | 1743 |
| 126 | 1744 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1745 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1746 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1747 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1748 // N2 | |
| 200 | 1749 temp1 = 1.05 * ppO2; |
| 126 | 1750 temp1 = temp1 - pres_tissue[ci]; |
| 200 | 1751 temp2 = ppO2 - pres_tissue[ci]; |
| 126 | 1752 if (temp2 >= 0.0) |
| 1753 { | |
| 1754 temp1 = 0; | |
| 1755 temp2 = 0; | |
| 1756 } | |
| 1757 else | |
| 1758 temp1 = temp1 / temp2; | |
| 1759 if (temp1 > 0.0) | |
| 1760 { | |
| 1761 temp1 = log(1.0 - temp1); | |
| 1762 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1763 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1764 // minus because log is negative | |
| 165 | 1765 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 | 1766 } |
| 1767 else | |
| 1768 { | |
| 1769 temp1 = 0; | |
| 1770 temp2 = 0; | |
| 1771 } | |
| 116 | 1772 |
| 126 | 1773 // He |
| 167 | 1774 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1775 if (temp3 >= 0.0) |
| 1776 { | |
| 1777 temp3 = 0; | |
| 1778 temp4 = 0; | |
| 1779 } | |
| 1780 else | |
| 167 | 1781 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 126 | 1782 if (temp3 > 0.0) |
| 1783 { | |
| 1784 temp3 = log(1.0 - temp3); | |
| 1785 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1786 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1787 // minus because log is negative | |
| 165 | 1788 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1789 } |
| 1790 else | |
| 1791 { | |
| 1792 temp3 = 0; | |
| 1793 temp4 = 0; | |
| 1794 } | |
| 116 | 1795 |
| 126 | 1796 // saturation_time (for flight) |
| 1797 if (temp4 > temp2) | |
| 184 | 1798 desat_time = (unsigned int)temp4; |
| 126 | 1799 else |
| 184 | 1800 desat_time = (unsigned int)temp2; |
| 167 | 1801 if(desat_time > int_O_desaturation_time) |
| 1802 int_O_desaturation_time = desat_time; | |
| 116 | 1803 |
| 126 | 1804 // N2 saturation in multiples of halftime for display purposes |
| 1805 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1806 temp2 = temp2 + 80.0; // set center | |
| 1807 if (temp2 < 0.0) | |
| 1808 temp2 = 0.0; | |
| 1809 if (temp2 > 255.0) | |
| 1810 temp2 = 255.0; | |
| 1811 char_O_tissue_saturation[ci] = (char)temp2; | |
| 1812 // He saturation in multiples of halftime for display purposes | |
| 1813 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1814 temp4 = temp4 + 80.0; // set center | |
| 1815 if (temp4 < 0.0) | |
| 1816 temp4 = 0.0; | |
| 1817 if (temp4 > 255.0) | |
| 1818 temp4 = 255.0; | |
| 167 | 1819 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1820 } // for |
| 167 | 1821 } |
| 116 | 1822 |
| 167 | 1823 ////////////////////////////////////////////////////////////////////////////// |
| 1824 // calc_wo_deco_step_1_min | |
| 1825 // | |
| 116 | 1826 // FIXED N2 Ratio |
| 1827 // optimized in v.101 (...saturation_multiplier) | |
| 1828 // desaturation slowed down to 70,42% | |
| 167 | 1829 // |
| 1830 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1831 { |
| 1832 if(flag_in_divemode) | |
| 1833 { | |
| 1834 flag_in_divemode = 0; | |
| 1835 set_dbg_end_of_dive(); | |
| 1836 } | |
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1837 |
| 126 | 1838 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 1839 pres_respiration = (float)int_I_pres_respiration / 1000.0; // assembler code uses different digit system | |
| 192 | 1840 pres_surface = (float)int_I_pres_surface / 1000.0; // the b"uhlmann formula using pres_surface does not use the N2_ratio |
| 200 | 1841 ppO2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body |
| 1842 ppHe = 0.0; | |
| 126 | 1843 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 1844 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 1845 |
| 192 | 1846 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 1847 |
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1848 clear_deco_table(); |
| 200 | 1849 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 1850 char_O_nullzeit = 0; |
| 168 | 1851 int_O_ascenttime = 0; |
| 126 | 1852 calc_gradient_factor(); |
| 167 | 1853 } |
| 126 | 1854 |
| 167 | 1855 ////////////////////////////////////////////////////////////////////////////// |
| 1856 ////////////////////////////////////////////////////////////////////////////// | |
| 1857 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1858 ////////////////////////////////////////////////////////////////////////////// | |
| 1859 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1860 |
| 184 | 1861 #ifndef CROSS_COMPILE |
| 116 | 1862 void deco_hash(void) |
| 1863 { | |
| 167 | 1864 overlay unsigned char md_i, md_j; // Loop index. |
| 1865 overlay unsigned char md_t; | |
| 1866 overlay unsigned char md_buffer[16]; | |
| 1867 overlay unsigned char md_temp; | |
| 1868 overlay unsigned int md_pointer; | |
| 1869 | |
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1870 RESET_C_STACK |
| 126 | 1871 |
| 1872 // init | |
| 164 | 1873 for(md_i=0;md_i<16;md_i++) |
| 126 | 1874 { |
| 1875 md_state[md_i] = 0; | |
| 164 | 1876 char_O_hash[md_i] = 0; |
| 126 | 1877 } // for md_i 16 |
| 116 | 1878 |
| 126 | 1879 _asm |
| 167 | 1880 movlw 0x01 // md_pi address. |
| 1881 movwf TBLPTRU,0 | |
| 1882 movlw 0x7E | |
| 1883 movwf TBLPTRH,0 | |
| 1884 movlw 0x00 | |
| 1885 movwf TBLPTRL,0 | |
| 126 | 1886 _endasm; |
| 165 | 1887 md_i = 0; |
| 1888 do { | |
| 126 | 1889 _asm |
| 1890 TBLRDPOSTINC | |
| 1891 movff TABLAT,md_temp | |
| 1892 _endasm | |
| 165 | 1893 md_pi_subst[md_i++] = md_temp; |
| 1894 } while( md_i != 0 ); | |
| 1895 | |
| 126 | 1896 _asm |
| 167 | 1897 movlw 0x00 |
| 1898 movwf TBLPTRU,0 | |
| 1899 movlw 0x00 | |
| 1900 movwf TBLPTRH,0 | |
| 1901 movlw 0x00 | |
| 1902 movwf TBLPTRL,0 | |
| 126 | 1903 _endasm |
| 167 | 1904 |
| 126 | 1905 // cycle buffers |
| 1906 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 1907 { | |
| 1908 md_t = 0; | |
| 1909 for (md_i=0;md_i<16;md_i++) | |
| 1910 { | |
| 1911 if(md_pointer == 9) | |
| 164 | 1912 md_temp = char_O_hash[md_i]; |
| 126 | 1913 else |
| 1914 { | |
| 1915 _asm | |
| 167 | 1916 TBLRDPOSTINC |
| 1917 movff TABLAT,md_temp | |
| 126 | 1918 _endasm |
| 1919 } // else | |
| 167 | 1920 |
| 1921 md_buffer[md_i] = md_temp; | |
| 186 | 1922 md_state[md_i+16] = md_temp; |
| 1923 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 1924 } // for md_i 16 |
| 1925 | |
| 1926 for (md_i=0;md_i<18;md_i++) | |
| 1927 { | |
| 1928 for (md_j=0;md_j<48;md_j++) | |
| 1929 { | |
| 167 | 1930 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 1931 md_t = md_state[md_j]; |
| 1932 } // for md_j 48 | |
| 1933 md_t = (unsigned char)(md_t+1); | |
| 1934 } // for md_i 18 | |
| 164 | 1935 md_t = char_O_hash[15]; |
| 126 | 1936 |
| 1937 for (md_i=0;md_i<16;md_i++) | |
| 1938 { | |
| 167 | 1939 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 1940 md_t = char_O_hash[md_i]; |
| 126 | 1941 } // for md_i 16 |
| 1942 } // for md_pointer | |
| 116 | 1943 } // void deco_hash(void) |
| 184 | 1944 #endif |
| 116 | 1945 |
| 167 | 1946 ////////////////////////////////////////////////////////////////////////////// |
| 1947 // deco_clear_CNS_fraction | |
| 1948 // | |
| 116 | 1949 // new in v.101 |
| 167 | 1950 // |
| 116 | 1951 void deco_clear_CNS_fraction(void) |
| 1952 { | |
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1953 RESET_C_STACK |
| 126 | 1954 CNS_fraction = 0.0; |
| 1955 char_O_CNS_fraction = 0; | |
| 167 | 1956 } |
| 116 | 1957 |
| 167 | 1958 ////////////////////////////////////////////////////////////////////////////// |
| 1959 // deco_calc_CNS_fraction | |
| 1960 // | |
| 116 | 1961 // new in v.101 |
| 1962 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 1963 // |
| 116 | 1964 // Input: char_I_actual_ppO2 |
| 1965 // Output: char_O_CNS_fraction | |
| 1966 // Uses and Updates: CNS_fraction | |
| 1967 // Uses: acutal_ppO2 | |
| 167 | 1968 // |
| 116 | 1969 void deco_calc_CNS_fraction(void) |
| 1970 { | |
| 167 | 1971 overlay float actual_ppO2; |
| 126 | 1972 RESET_C_STACK |
| 167 | 1973 |
| 126 | 1974 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 1975 |
| 126 | 1976 if (char_I_actual_ppO2 < 50) |
| 1977 CNS_fraction = CNS_fraction;// no changes | |
| 1978 else if (char_I_actual_ppO2 < 60) | |
| 1979 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 1980 else if (char_I_actual_ppO2 < 70) | |
| 1981 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 1982 else if (char_I_actual_ppO2 < 80) | |
| 1983 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 1984 else if (char_I_actual_ppO2 < 90) | |
| 1985 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 1986 else if (char_I_actual_ppO2 < 110) | |
| 1987 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 1988 else if (char_I_actual_ppO2 < 150) | |
| 1989 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 1990 else if (char_I_actual_ppO2 < 160) | |
| 1991 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 1992 else if (char_I_actual_ppO2 < 165) | |
| 1993 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 | |
| 1994 else if (char_I_actual_ppO2 < 170) | |
| 1995 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 1996 else if (char_I_actual_ppO2 < 175) | |
| 1997 CNS_fraction = 0.00136 + CNS_fraction; | |
| 1998 else if (char_I_actual_ppO2 < 180) | |
| 1999 CNS_fraction = 0.00180 + CNS_fraction; | |
| 2000 else if (char_I_actual_ppO2 < 185) | |
| 2001 CNS_fraction = 0.00237 + CNS_fraction; | |
| 2002 else if (char_I_actual_ppO2 < 190) | |
| 2003 CNS_fraction = 0.00310 + CNS_fraction; | |
| 2004 else if (char_I_actual_ppO2 < 195) | |
| 2005 CNS_fraction = 0.00401 + CNS_fraction; | |
| 2006 else if (char_I_actual_ppO2 < 200) | |
| 2007 CNS_fraction = 0.00517 + CNS_fraction; | |
| 2008 else if (char_I_actual_ppO2 < 230) | |
| 2009 CNS_fraction = 0.0209 + CNS_fraction; | |
| 2010 else | |
| 2011 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 2012 |
| 126 | 2013 if (CNS_fraction > 2.5) |
| 2014 CNS_fraction = 2.5; | |
| 2015 if (CNS_fraction < 0.0) | |
| 2016 CNS_fraction = 0.0; | |
| 2017 | |
| 2018 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2019 } |
| 116 | 2020 |
| 167 | 2021 ////////////////////////////////////////////////////////////////////////////// |
| 2022 // deco_calc_CNS_decrease_15min | |
| 2023 // | |
| 116 | 2024 // new in v.101 |
| 167 | 2025 // |
| 116 | 2026 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2027 // (Used in sleepmode, for low battery mode). |
| 167 | 2028 // |
| 116 | 2029 // Output: char_O_CNS_fraction |
| 2030 // Uses and Updates: CNS_fraction | |
| 167 | 2031 // |
| 116 | 2032 void deco_calc_CNS_decrease_15min(void) |
| 2033 { | |
|
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2034 RESET_C_STACK |
| 126 | 2035 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2036 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2037 } | |
| 116 | 2038 |
| 167 | 2039 ////////////////////////////////////////////////////////////////////////////// |
| 2040 // deco_calc_percentage | |
| 2041 // | |
| 116 | 2042 // new in v.101 |
| 167 | 2043 // |
| 116 | 2044 // calculates int_I_temp * char_I_temp / 100 |
| 2045 // output is int_I_temp | |
| 200 | 2046 // |
| 2047 // Used to compute NoFly remaining time. | |
| 116 | 2048 |
| 2049 void deco_calc_percentage(void) | |
| 2050 { | |
|
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|
2051 RESET_C_STACK |
| 197 | 2052 int_I_temp = (int)(int_I_temp * (char_I_temp / 100.0)); |
| 116 | 2053 } |
| 2054 | |
| 167 | 2055 ////////////////////////////////////////////////////////////////////////////// |
| 2056 | |
| 116 | 2057 void deco_push_tissues_to_vault(void) |
| 2058 { | |
| 167 | 2059 overlay unsigned char x; |
|
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2060 RESET_C_STACK |
| 167 | 2061 |
| 116 | 2062 cns_vault = CNS_fraction; |
| 167 | 2063 for (x=0;x<32;x++) |
| 2064 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2065 } |
| 167 | 2066 |
| 116 | 2067 void deco_pull_tissues_from_vault(void) |
| 2068 { | |
| 167 | 2069 overlay unsigned char x; |
|
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2070 RESET_C_STACK |
| 167 | 2071 |
| 116 | 2072 CNS_fraction = cns_vault; |
| 167 | 2073 for (x=0;x<32;x++) |
| 2074 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2075 } |
| 2076 | |
| 167 | 2077 ////////////////////////////////////////////////////////////////////////////// |
| 2078 // | |
| 184 | 2079 #ifndef CROSS_COMPILE |
| 2080 void main() {} | |
| 2081 #endif |