Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 241:f44274d8440a
Model cleanups.
+ Fix look for current gas.
+ Minor optimize.
+ Fix needs to remember last switch gas depth, too.
+ Always take deepest gas.
+ Optimize by limiting search to 10m/min ascent.
+ FIX ascending 10m is 0.9985 bar.
+ FIX typos 9995 --> 9985
| author | JeanDo |
|---|---|
| date | Mon, 21 Mar 2011 20:50:52 +0100 |
| parents | d995e220ddac |
| children | ce869aad7440 |
| rev | line source |
|---|---|
| 116 | 1 // ************************************************************** |
| 2 // p2_deco.c | |
| 3 // | |
| 4 // Created on: 12.05.2009 | |
| 5 // Author: chsw | |
| 6 // | |
| 7 // ************************************************************** | |
| 8 | |
| 9 ////////////////////////////////////////////////////////////////////////////// | |
| 10 // OSTC - diving computer code | |
| 11 // Copyright (C) 2008 HeinrichsWeikamp GbR | |
| 12 // | |
| 13 // This program is free software: you can redistribute it and/or modify | |
| 14 // it under the terms of the GNU General Public License as published by | |
| 15 // the Free Software Foundation, either version 3 of the License, or | |
| 16 // (at your option) any later version. | |
| 17 // | |
| 18 // This program is distributed in the hope that it will be useful, | |
| 19 // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 21 // GNU General Public License for more details. | |
| 22 // | |
| 23 // You should have received a copy of the GNU General Public License | |
| 24 // along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 25 // | |
| 26 ////////////////////////////////////////////////////////////////////////////// | |
| 27 | |
| 28 // ***************************** | |
| 29 // ** I N T R O D U C T I O N ** | |
| 30 // ***************************** | |
| 31 // | |
| 32 // OSTC | |
| 33 // | |
| 34 // code: | |
| 35 // p2_deco_main_c_v101.c | |
| 36 // part2 of the OSTC code | |
| 37 // code with constant O2 partial pressure routines | |
| 38 // under construction !! | |
| 39 // | |
| 40 // summary: | |
| 41 // decompression routines | |
| 42 // for the OSTC experimental project | |
| 43 // written by Christian Weikamp | |
| 44 // last revision __________ | |
| 45 // comments added _________ | |
| 46 // | |
| 47 // additional files: | |
| 48 // p2_tables_v100.romdata (other files) | |
| 49 // 18f4685_ostc_v100.lkr (linker script) | |
| 50 // | |
| 51 // history: | |
| 52 // 01/03/08 v100: first release candidate | |
| 53 // 03/13/08 v101: start of programming ppO2 code | |
| 54 // 03/13/25 v101a: backup of interrim version with ppO2 calculation | |
| 55 // 03/13/25 v101: open circuit gas change during deco | |
| 56 // 03/13/25 v101: CNS_fraction calculation | |
| 57 // 03/13/26 v101: optimization of tissue calc routines | |
| 58 // 07/xx/08 v102a: debug of bottom time routine | |
| 59 // 09/xx/08 v102d: Gradient Factor Model implemenation | |
| 60 // 10/10/08 v104: renamed to build v103 for v118 stable | |
| 171 | 61 // 10/14/08 v104: integration of char_I_depth_last_deco for Gradient Model |
| 116 | 62 // 03/31/09 v107: integration of FONT Incon24 |
| 63 // 05/23/10 v109: 5 gas changes & 1 min timer | |
| 64 // 07/13/10 v110: cns vault added | |
| 65 // 12/25/10 v110: split in three files (deco.c, main.c, definitions.h) | |
| 163 | 66 // 2011/01/20: [jDG] Create a common file included in ASM and C code. |
| 167 | 67 // 2011/01/23: [jDG] Added read_custom_function(). |
| 203 | 68 // 2011/01/24: [jDG] Make ascenttime an short. No more overflow! |
|
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69 // 2011/01/25: [jDG] Fusion deco array for both models. |
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70 // 2011/01/25: [jDG] Use CF(54) to reverse deco order. |
| 193 | 71 // 2011/02/11: [jDG] Reworked gradient-factor implementation. |
| 197 | 72 // 2011/02/13: [jDG] CF55 for additional gas switch delay in decoplan. |
| 217 | 73 // 2011/02/24: [jDG] Fixed inconsistencies introduced by gas switch delays. |
| 116 | 74 // |
| 167 | 75 // TODO: |
| 76 // + Allow to abort MD2 calculation (have to restart next time). | |
| 77 // | |
| 78 // Literature: | |
| 200 | 79 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 80 // Schr"oder, Kai & Reith, Steffen; 2000; S"attigungsvorg"ange beim Tauchen, das Modell ZH-L16, Funktionsweise von Tauchcomputern; http://www.achim-und-kai.de/kai/tausim/saett_faq |
| 81 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 82 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 83 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 84 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 85 // |
| 86 // | |
| 116 | 87 |
| 88 // ********************* | |
| 89 // ** I N C L U D E S ** | |
| 90 // ********************* | |
| 91 #include <math.h> | |
| 167 | 92 |
| 192 | 93 // *********************************************** |
| 94 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 95 // *********************************************** | |
| 96 | |
| 97 #include "p2_definitions.h" | |
| 98 #include "shared_definitions.h" | |
| 99 | |
| 200 | 100 // Water vapour partial pressure in the lumb. |
| 233 | 101 #define ppWVapour 0.0627 |
| 200 | 102 |
| 167 | 103 // ************************* |
| 104 // ** P R O T O T Y P E S ** | |
| 105 // ************************* | |
| 106 | |
| 107 static void calc_hauptroutine(void); | |
| 108 static void calc_nullzeit(void); | |
| 109 | |
| 192 | 110 static void calc_tissue(PARAMETER unsigned char period); |
| 111 static void calc_limit(PARAMETER float GF_current); | |
| 112 | |
| 167 | 113 static void clear_tissue(void); |
| 114 static void calc_ascenttime(void); | |
| 115 static void update_startvalues(void); | |
|
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116 static void clear_deco_table(void); |
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117 static void update_deco_table(void); |
| 192 | 118 |
| 119 static void backup_sim_pres_tissue(void); | |
| 120 static void restore_sim_pres_tissue(void); | |
| 121 static void sim_tissue(PARAMETER unsigned char period); | |
| 122 static void sim_limit(PARAMETER float GF_current); | |
| 167 | 123 static void calc_gradient_factor(void); |
| 124 static void calc_wo_deco_step_1_min(void); | |
| 125 | |
| 126 static void calc_hauptroutine_data_input(void); | |
| 127 static void calc_hauptroutine_update_tissues(void); | |
| 128 static void calc_hauptroutine_calc_deco(void); | |
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129 static void sim_ascent_to_first_stop(void); |
| 167 | 130 |
| 241 | 131 static unsigned char gas_switch_deepest(void); |
| 132 static void gas_switch_set(void); | |
| 217 | 133 |
| 241 | 134 static unsigned char calc_nextdecodepth(void); |
| 116 | 135 |
| 200 | 136 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 137 #pragma udata bank4=0x400 |
| 116 | 138 |
| 139 static float temp_limit; | |
| 140 static float GF_low; | |
| 141 static float GF_high; | |
| 142 static float GF_delta; | |
| 192 | 143 static unsigned char low_depth; // Depth of deepest stop |
| 144 static float locked_GF_step; // GF_delta / low_depth | |
| 145 | |
| 146 static unsigned char temp_depth_limit; | |
| 171 | 147 |
| 192 | 148 // Simulation context: used to predict ascent. |
| 149 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 150 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 151 |
| 192 | 152 // Real context: what we are doing now. |
| 153 static float calc_lead_tissue_limit; // | |
| 116 | 154 |
|
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155 static unsigned char internal_deco_time[32]; |
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156 static unsigned char internal_deco_depth[32]; |
| 116 | 157 |
| 158 static float cns_vault; | |
| 159 static float pres_tissue_vault[32]; | |
| 160 | |
| 163 | 161 //---- Bank 5 parameters ----------------------------------------------------- |
| 162 #pragma udata bank5=0x500 | |
| 163 | |
| 167 | 164 static unsigned char ci; |
| 116 | 165 static float pres_respiration; |
| 166 static float pres_surface; | |
| 167 static float temp_deco; | |
| 236 | 168 static float ppN2; |
| 200 | 169 static float ppHe; |
| 116 | 170 static float temp_tissue; |
| 200 | 171 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 172 static float He_ratio; // Breathed gas helium ratio. | |
| 173 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 174 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 175 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 176 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 177 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 178 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 179 |
| 164 | 180 static float pres_diluent; // new in v.101 |
| 181 static float const_ppO2; // new in v.101 | |
| 182 static float deco_ppO2_change; // new in v.101 | |
| 183 static float deco_ppO2; // new in v.101 | |
| 116 | 184 |
| 241 | 185 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
| 186 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
| 203 | 187 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 188 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 189 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 190 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 191 static float CNS_fraction; // new in v.101 | |
| 192 static float float_saturation_multiplier; // new in v.101 | |
| 193 static float float_desaturation_multiplier; // new in v.101 | |
| 167 | 194 static float float_deco_distance; // new in v.101 |
| 195 static char flag_in_divemode; // new in v.108 | |
| 196 | |
| 225 | 197 static unsigned char deco_gas_change[5]; // new in v.109 |
| 167 | 198 |
| 163 | 199 //---- Bank 6 parameters ----------------------------------------------------- |
| 200 #pragma udata bank6=0x600 | |
| 116 | 201 |
| 197 | 202 float pres_tissue[32]; |
| 203 float pres_tissue_limit[16]; | |
| 204 float sim_pres_tissue_limit[16]; | |
| 116 | 205 |
| 163 | 206 //---- Bank 7 parameters ----------------------------------------------------- |
| 207 #pragma udata bank7=0x700 | |
| 208 | |
| 197 | 209 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
| 116 | 210 static float sim_pres_tissue_backup[32]; |
| 211 | |
| 163 | 212 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 213 #pragma udata bank8=0x800 |
| 163 | 214 |
| 116 | 215 static char md_pi_subst[256]; |
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216 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 217 |
| 163 | 218 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 219 #pragma udata bank9=0x900 |
| 116 | 220 |
| 163 | 221 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 222 |
| 164 | 223 // internal, dbg: |
| 167 | 224 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 225 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 226 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 224 | 227 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
| 228 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
| 164 | 229 static float DBG_pres_surface; // new in v.108 |
| 230 static float DBG_GF_low; // new in v.108 | |
| 231 static float DBG_GF_high; // new in v.108 | |
| 232 static float DBG_const_ppO2; // new in v.108 | |
| 233 static float DBG_deco_ppO2_change; // new in v.108 | |
| 234 static float DBG_deco_ppO2; // new in v.108 | |
| 235 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 236 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 237 static float DBG_float_deco_distance; // new in v.108 | |
| 238 static float DBG_N2_ratio; // new in v.108 | |
| 239 static float DBG_He_ratio; // new in v.108 | |
| 240 | |
| 167 | 241 ////////////////////////////////////////////////////////////////////////////// |
| 242 ////////////////////////////////////////////////////////////////////////////// | |
| 243 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 244 ////////////////////////////////////////////////////////////////////////////// | |
| 245 ////////////////////////////////////////////////////////////////////////////// | |
| 246 // | |
| 247 // End of PROM code is 17F00, So push tables on PROM top... | |
| 248 // | |
| 249 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 250 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 251 |
| 167 | 252 // Magic table to compute the MD2 HASH |
| 253 // | |
| 254 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 255 rom const rom unsigned short md_pi[] = |
| 116 | 256 { |
| 257 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 258 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 259 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 260 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 261 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 262 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 263 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 264 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 265 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 266 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 267 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 268 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 269 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 270 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 271 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 272 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 273 }; | |
| 274 | |
| 167 | 275 ////////////////////////////////////////////////////////////////////////////// |
| 276 ////////////////////////////////////////////////////////////////////////////// | |
| 277 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 278 ////////////////////////////////////////////////////////////////////////////// | |
| 279 ////////////////////////////////////////////////////////////////////////////// | |
| 280 // | |
| 116 | 281 // all new in v.102 |
| 282 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 283 | |
| 284 #pragma code p2_deco = 0x0C000 | |
| 285 | |
| 167 | 286 ////////////////////////////////////////////////////////////////////////////// |
| 287 // DBS - debug on start of dive | |
| 288 // | |
| 289 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 290 { |
| 167 | 291 overlay char i; // Local loop index. |
| 292 | |
| 293 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 294 int_O_DBS_bitfield = 0; |
| 295 int_O_DBS2_bitfield = 0; | |
| 296 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 297 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 298 else | |
| 299 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 300 int_O_DBG_post_bitfield = 0; | |
| 167 | 301 |
| 302 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 303 char_O_NDL_at_20mtr = 255; |
| 304 | |
| 167 | 305 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 306 DBG_N2_ratio = N2_ratio; |
| 307 DBG_He_ratio = He_ratio; | |
| 308 DBG_char_I_deco_model = char_I_deco_model; | |
| 309 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 310 DBG_pres_surface = pres_surface; | |
| 311 DBG_GF_low = GF_low; | |
| 312 DBG_GF_high = GF_high; | |
| 313 DBG_const_ppO2 = const_ppO2; | |
| 314 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 315 DBG_deco_ppO2 = deco_ppO2; | |
| 224 | 316 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 317 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 318 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 319 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 320 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 321 DBG_float_deco_distance = float_deco_distance; | |
| 322 | |
| 167 | 323 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 324 if(char_I_deco_model) |
| 325 int_O_DBS_bitfield |= DBS_mode; | |
| 326 if(const_ppO2) | |
| 327 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 328 for(i = 16; i < 32; i++) |
| 329 if(pres_tissue[i]) | |
| 116 | 330 int_O_DBS_bitfield |= DBS_HE_sat; |
| 331 if(deco_ppO2_change) | |
| 332 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 333 if(float_saturation_multiplier < 0.99) | |
| 334 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 335 if(float_saturation_multiplier > 1.3) | |
| 336 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 337 if(GF_low < 0.19) | |
| 338 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 339 if(GF_low > 1.01) | |
| 340 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 341 if(GF_high < 0.6) | |
| 342 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 343 if(GF_high > 1.01) | |
| 344 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 345 if((N2_ratio + He_ratio) > 0.95) | |
| 346 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 347 if((N2_ratio + He_ratio) < 0.05) | |
| 348 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 349 if(float_deco_distance > 0.25) | |
| 350 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 351 if(char_I_depth_last_deco > 8) | |
| 352 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 353 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 354 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 355 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 356 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 357 if(pres_respiration > 3.0) | |
| 358 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 359 if(pres_surface - pres_respiration > 0.2) | |
| 360 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 361 if(pres_surface < 0.75) | |
| 362 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 363 if(pres_surface > 1.11) | |
| 364 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 365 if(float_desaturation_multiplier < 0.70) | |
| 366 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 367 if(float_desaturation_multiplier > 1.01) | |
| 368 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 369 if(GF_low > GF_high) | |
| 370 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 371 } | |
| 372 | |
| 167 | 373 ////////////////////////////////////////////////////////////////////////////// |
| 374 // DBG - set DBG to end_of_dive | |
| 375 // | |
| 376 static void set_dbg_end_of_dive(void) | |
| 116 | 377 { |
| 378 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 379 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 380 } | |
| 381 | |
| 167 | 382 ////////////////////////////////////////////////////////////////////////////// |
| 383 // DBG - NDL at first 20 m. hit | |
| 384 // | |
| 385 static void check_ndl(void) | |
| 116 | 386 { |
| 167 | 387 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 388 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 389 ) | |
| 116 | 390 { |
| 167 | 391 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 392 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 393 char_O_NDL_at_20mtr = 254; |
| 116 | 394 } |
| 395 } | |
| 396 | |
| 167 | 397 ////////////////////////////////////////////////////////////////////////////// |
| 398 // DBG - multi main during dive | |
| 399 // | |
| 184 | 400 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 401 { |
| 203 | 402 overlay unsigned short temp_DBS = 0; |
| 200 | 403 overlay unsigned char i; // Local loop index. |
| 167 | 404 |
| 116 | 405 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 406 temp_DBS |= DBG_c_gas; | |
| 407 if(DBG_const_ppO2 != const_ppO2) | |
| 408 temp_DBS |= DBG_c_ppO2; | |
| 167 | 409 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 410 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 411 ) | |
| 116 | 412 temp_DBS |= DBG_CdeSAT; |
| 413 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 414 temp_DBS |= DBG_C_MODE; | |
| 415 if(DBG_pres_surface != pres_surface) | |
| 416 temp_DBS |= DBG_C_SURF; | |
| 167 | 417 |
| 418 if( !DBS_HE_sat && !He_ratio) | |
| 419 for(i = 16; i < 32; i++) | |
| 420 if(pres_tissue[i]) | |
| 116 | 421 temp_DBS |= DBG_HEwoHE; |
| 167 | 422 |
| 116 | 423 if(DBG_deco_ppO2 != deco_ppO2) |
| 424 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 425 |
| 225 | 426 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 427 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 428 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 429 temp_DBS |= DBG_C_DGAS; |
| 167 | 430 |
| 116 | 431 if(DBG_float_deco_distance != float_deco_distance) |
| 432 temp_DBS |= DBG_C_DIST; | |
| 433 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 434 temp_DBS |= DBG_C_LAST; | |
| 167 | 435 if( DBG_GF_low != GF_low |
| 436 || DBG_GF_high != GF_high ) | |
| 116 | 437 temp_DBS |= DBG_C_GF; |
| 438 if(pres_respiration > 13.0) | |
| 439 temp_DBS |= DBG_PHIGH; | |
| 440 if(pres_surface - pres_respiration > 0.2) | |
| 441 temp_DBS |= DBG_PLOW; | |
| 442 if(is_post_check) | |
| 443 int_O_DBG_post_bitfield |= temp_DBS; | |
| 444 else | |
| 445 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 446 } | |
| 447 | |
| 167 | 448 ////////////////////////////////////////////////////////////////////////////// |
| 449 // DBG - prior to calc. of dive | |
| 450 // | |
| 451 static void check_pre_dbg(void) | |
| 116 | 452 { |
| 453 check_dbg(0); | |
| 454 } | |
| 455 | |
| 167 | 456 ////////////////////////////////////////////////////////////////////////////// |
| 457 // DBG - after decocalc of dive | |
| 458 // | |
| 459 static void check_post_dbg(void) | |
| 116 | 460 { |
| 461 check_dbg(1); | |
| 462 } | |
| 463 | |
| 165 | 464 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 465 ////////////////////////////////////////////////////////////////////////////// |
| 466 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 467 ////////////////////////////////////////////////////////////////////////////// | |
| 468 ////////////////////////////////////////////////////////////////////////////// | |
| 469 | |
| 235 | 470 ////////////////////////////////////////////////////////////////////////////// |
| 471 #ifdef __DEBUG | |
| 472 void assert_failed(PARAMETER short int line) | |
| 473 { | |
| 474 extern void PLED_resetdebugger(void); | |
| 475 extern unsigned short temp10; | |
| 476 | |
| 477 temp10 = line; | |
| 478 PLED_resetdebugger(); | |
| 479 } | |
| 480 #endif | |
| 481 ////////////////////////////////////////////////////////////////////////////// | |
| 482 // When calling C code from ASM context, the data stack pointer and | |
| 483 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
| 484 | |
| 485 #ifdef CROSS_COMPILE | |
| 486 # define RESET_C_STACK | |
| 487 #else | |
| 488 # ifdef __DEBUG | |
| 489 # define RESET_C_STACK fillDataStack(); | |
| 490 void fillDataStack(void) | |
| 491 { | |
| 492 _asm | |
| 493 LFSR 1,C_STACK | |
| 494 MOVLW 0xCC | |
| 495 loop: MOVWF POSTINC1,0 | |
| 496 TSTFSZ FSR1L,0 | |
| 497 BRA loop | |
| 498 | |
| 499 LFSR 1,C_STACK | |
| 500 LFSR 2,C_STACK | |
| 501 _endasm | |
| 502 } | |
| 503 # else | |
| 504 # define RESET_C_STACK \ | |
| 505 _asm \ | |
| 506 LFSR 1, C_STACK \ | |
| 507 LFSR 2, C_STACK \ | |
| 508 _endasm | |
| 509 # endif | |
| 510 #endif | |
| 511 | |
| 512 ////////////////////////////////////////////////////////////////////////////// | |
| 513 | |
| 203 | 514 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 515 { |
| 184 | 516 #ifdef CROSS_COMPILE |
| 517 extern unsigned short custom_functions[]; | |
| 518 return custom_functions[cf]; | |
| 519 #else | |
| 167 | 520 extern unsigned char hi, lo; |
| 521 extern void getcustom15(); | |
| 522 _asm | |
| 523 movff cf,WREG | |
| 524 call getcustom15,0 | |
| 525 movff lo,PRODL | |
| 526 movff hi,PRODH | |
| 527 _endasm | |
| 184 | 528 #endif |
| 167 | 529 } |
| 530 | |
| 531 ////////////////////////////////////////////////////////////////////////////// | |
| 165 | 532 // read buhlmann tables for compatriment ci |
| 167 | 533 // If period == 0 : 2sec interval |
| 534 // 1 : 1 min interval | |
| 535 // 2 : 10 min interval. | |
| 184 | 536 static void read_buhlmann_coefficients(PARAMETER char period) |
| 165 | 537 { |
| 184 | 538 #ifndef CROSS_COMPILE |
| 167 | 539 // Note: we don't use far rom pointer, because the |
| 540 // 24 bits is to complex, hence we have to set | |
| 541 // the UPPER page ourself... | |
| 542 // --> Set zero if tables are moved to lower pages ! | |
| 543 _asm | |
| 544 movlw 1 | |
| 545 movwf TBLPTRU,0 | |
| 546 _endasm | |
| 184 | 547 #endif |
| 197 | 548 assert( 0 <= ci && ci < 16 ); |
| 167 | 549 |
| 165 | 550 var_N2_a = buhlmann_a[ci]; |
| 551 var_N2_b = buhlmann_b[ci]; | |
| 167 | 552 var_He_a = (buhlmann_a+16)[ci]; |
| 553 var_He_b = (buhlmann_b+16)[ci]; | |
| 554 | |
| 165 | 555 // Check reading consistency: |
| 556 if( (var_N2_a < 0.231) | |
| 557 || (var_N2_a > 1.27) | |
| 558 || (var_N2_b < 0.504) | |
| 559 || (var_N2_b > 0.966) | |
| 560 || (var_He_a < 0.510) | |
| 561 || (var_He_a > 1.75) | |
| 562 || (var_He_b < 0.423) | |
| 563 || (var_He_b > 0.927) | |
| 564 ) | |
| 565 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 167 | 566 |
| 165 | 567 // Integration intervals. |
| 167 | 568 switch(period) |
| 165 | 569 { |
| 167 | 570 case -1://---- no interval ----------------------------------------------- |
| 571 var_N2_e = var_He_e = 0.0; | |
| 572 break; | |
| 573 | |
| 165 | 574 case 0: //---- 2 sec ----------------------------------------------------- |
| 575 var_N2_e = e2secs[ci]; | |
| 167 | 576 var_He_e = (e2secs+16)[ci]; |
| 165 | 577 |
| 578 // Check reading consistency: | |
| 579 if( (var_N2_e < 0.0000363) | |
| 580 || (var_N2_e > 0.00577) | |
| 581 || (var_He_e < 0.0000961) | |
| 582 || (var_He_e > 0.150) | |
| 583 ) | |
| 584 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 585 | |
| 586 break; | |
| 587 | |
| 588 case 1: //---- 1 min ----------------------------------------------------- | |
| 589 var_N2_e = e1min[ci]; | |
| 167 | 590 var_He_e = (e1min+16)[ci]; |
| 165 | 591 |
| 592 // Check reading consistency: | |
| 593 if( (var_N2_e < 1.09E-3) | |
| 594 || (var_N2_e > 0.1592) | |
| 595 || (var_He_e < 0.00288) | |
| 596 || (var_He_e > 0.3682) | |
| 597 ) | |
| 598 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 599 | |
| 600 break; | |
| 601 | |
| 602 case 2: //---- 10 min ---------------------------------------------------- | |
| 603 var_N2_e = e10min[ci]; | |
| 167 | 604 var_He_e = (e10min+16)[ci]; |
| 165 | 605 |
| 606 // Check reading consistency: | |
| 607 if( (var_N2_e < 0.01085) | |
| 608 || (var_N2_e > 0.82323) | |
| 609 || (var_He_e < 0.02846) | |
| 610 || (var_He_e > 0.98986) | |
| 611 ) | |
| 612 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 613 | |
| 614 break; | |
| 197 | 615 |
| 616 default: | |
| 617 assert(0); // Never go there... | |
| 165 | 618 } |
| 619 } | |
| 620 | |
| 621 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 622 // calc_next_decodepth_GF |
| 165 | 623 // |
| 116 | 624 // new in v.102 |
| 165 | 625 // |
| 116 | 626 // INPUT, changing during dive: |
| 192 | 627 // low_depth |
| 167 | 628 // |
| 116 | 629 // INPUT, fixed during dive: |
| 167 | 630 // pres_surface |
| 631 // GF_delta | |
| 632 // GF_high | |
| 633 // GF_low | |
| 171 | 634 // char_I_depth_last_deco |
| 167 | 635 // float_deco_distance |
| 636 // | |
| 241 | 637 // RETURN TRUE iff a stop is needed. |
| 638 // | |
| 116 | 639 // OUTPUT |
| 171 | 640 // locked_GF_step |
| 167 | 641 // temp_depth_limt |
| 192 | 642 // low_depth |
| 167 | 643 // |
| 241 | 644 static unsigned char calc_nextdecodepth(void) |
| 167 | 645 { |
| 241 | 646 //--- Max ascent speed --------------------------------------------------- |
| 647 // Recompute leading gas limit, at current depth: | |
| 648 overlay float depth = (temp_deco - pres_surface) / 0.09985; | |
| 649 | |
| 650 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
| 651 overlay float min_depth = depth - 10.0; | |
| 652 | |
| 653 // Do we need to stop at current depth ? | |
| 654 overlay unsigned char need_stop = 0; | |
| 655 | |
| 656 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
| 657 assert( low_depth < 255 ); | |
| 658 | |
| 212 | 659 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 660 if (char_I_deco_model == 1) |
| 661 { | |
| 241 | 662 if( depth >= low_depth ) |
| 192 | 663 sim_limit( GF_low ); |
| 664 else | |
| 665 sim_limit( GF_high - depth * locked_GF_step ); | |
| 666 | |
| 667 // Stops are needed ? | |
| 668 if( sim_lead_tissue_limit > pres_surface ) | |
| 669 { | |
| 241 | 670 // Deepest stop, in meter (rounded up with a margin of 0.5m) |
| 671 overlay unsigned char first_stop = 3 * (short)(0.83 + (sim_lead_tissue_limit - pres_surface) / 0.29955); | |
| 192 | 672 assert( first_stop < 128 ); |
| 171 | 673 |
| 212 | 674 // Apply correction for the shallowest stop. |
| 192 | 675 if( first_stop == 3 ) // new in v104 |
| 676 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 677 |
| 192 | 678 // Check all stops until one is higher than tolerated presure |
| 679 while(first_stop > 0) | |
| 680 { | |
| 681 overlay unsigned char next_stop; // Next index (0..30) | |
| 682 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 683 |
| 241 | 684 // Check max speed, or reaching surface. |
| 685 if( first_stop <= min_depth ) | |
| 686 break; | |
| 687 | |
| 688 // So, there is indeed a stop needed: | |
| 689 need_stop = 1; | |
| 690 | |
| 192 | 691 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 692 next_stop = 0; | |
| 216 | 693 else if( first_stop == 6 ) |
| 694 next_stop = char_I_depth_last_deco; | |
| 192 | 695 else |
| 696 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 697 |
| 241 | 698 pres_stop = next_stop * 0.09985 // Meters to bar |
| 192 | 699 + pres_surface; |
| 700 | |
| 212 | 701 // Keep GF_low until a first stop depth is found: |
| 702 if( next_stop >= low_depth ) | |
| 703 sim_limit( GF_low ); | |
| 704 else | |
| 705 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 706 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 707 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 708 |
| 192 | 709 // upper limit (lowest pressure tolerated): |
| 710 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 711 break; | |
| 712 | |
| 713 // Else, validate that stop and loop... | |
| 714 first_stop = next_stop; | |
| 715 } | |
| 171 | 716 |
| 212 | 717 // Is it a new deepest first stop ? If yes this is the reference for |
| 718 // the varying gradient factor. So reset that: | |
| 241 | 719 if( first_stop > min_depth && first_stop > low_depth ) |
| 212 | 720 { |
| 721 // Store the deepest stop depth, as reference for GF_low. | |
| 722 low_depth = first_stop; | |
| 723 locked_GF_step = GF_delta / low_depth; | |
| 724 } | |
| 725 | |
| 726 // next stop is the last validated depth found, aka first_stop | |
| 192 | 727 temp_depth_limit = first_stop; // Stop depth, in meter. |
| 728 } | |
| 171 | 729 else |
| 192 | 730 temp_depth_limit = 0; // stop depth, in meter. |
| 116 | 731 } |
| 167 | 732 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 733 { |
| 192 | 734 overlay float pres_gradient; |
| 735 | |
| 736 // Original model | |
| 116 | 737 // optimized in v.101 |
| 171 | 738 // char_I_depth_last_deco included in v.101 |
| 116 | 739 |
| 192 | 740 // Compute sim_lead_tissue_limit too, but just once. |
| 741 sim_limit(1.0); | |
| 742 | |
| 743 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 744 if (pres_gradient >= 0) |
| 116 | 745 { |
| 241 | 746 pres_gradient /= 0.29955; // Bar --> stop number; |
| 203 | 747 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> meter : depth for deco |
| 241 | 748 need_stop = 1; // Hit. |
| 749 | |
| 750 // Implement last stop at 4m/5m/6m... | |
| 751 if( temp_depth_limit == 3 ) | |
| 752 temp_depth_limit = char_I_depth_last_deco; | |
| 171 | 753 } |
| 116 | 754 else |
| 241 | 755 temp_depth_limit = 0; |
| 171 | 756 } |
| 212 | 757 |
| 217 | 758 //---- Check gas change -------------------------------------------------- |
| 241 | 759 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
| 760 | |
| 761 return need_stop; | |
| 167 | 762 } |
| 116 | 763 |
| 167 | 764 ////////////////////////////////////////////////////////////////////////////// |
|
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765 // copy_deco_table |
| 167 | 766 // |
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767 // Buffer the stops, once computed, so we can continue to display them |
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768 // while computing the next set. |
| 167 | 769 // |
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770 static void copy_deco_table(void) |
| 116 | 771 { |
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772 // Copy depth of the first (deepest) stop, because when reversing |
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773 // order, it will be hard to find... |
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774 char_O_first_deco_depth = internal_deco_depth[0]; |
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775 char_O_first_deco_time = internal_deco_time [0]; |
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776 |
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777 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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778 { |
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779 overlay unsigned char x, y; |
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780 |
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781 //---- First: search the first non-null depth |
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782 for(x=31; x != 0; --x) |
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783 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 784 |
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785 //---- Second: copy to output table (in reverse order) |
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786 for(y=0; y<32; y++, --x) |
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787 { |
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788 char_O_deco_depth[y] = internal_deco_depth[x]; |
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789 char_O_deco_time [y] = internal_deco_time [x]; |
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790 |
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791 // Stop only once the last transfer is done. |
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792 if( x == 0 ) break; |
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793 } |
| 116 | 794 |
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795 //---- Third: fill table end with null |
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796 for(y++; y<32; y++) |
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797 { |
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798 char_O_deco_time [y] = 0; |
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799 char_O_deco_depth[y] = 0; |
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800 } |
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801 } |
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802 else //---- Straight copy ------------------------------------------------ |
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803 { |
| 167 | 804 overlay unsigned char x; |
| 805 | |
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806 for(x=0; x<32; x++) |
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807 { |
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808 char_O_deco_depth[x] = internal_deco_depth[x]; |
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809 char_O_deco_time [x] = internal_deco_time [x]; |
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810 } |
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811 } |
| 167 | 812 } |
| 116 | 813 |
| 167 | 814 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 815 // temp_tissue_safety // |
| 167 | 816 // |
| 116 | 817 // outsourced in v.102 |
| 167 | 818 // |
| 819 // Apply safety factors for brand ZH-L16 model. | |
| 820 // | |
| 821 static void temp_tissue_safety(void) | |
| 116 | 822 { |
| 197 | 823 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 824 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 825 | |
| 167 | 826 if( char_I_deco_model == 0 ) |
| 116 | 827 { |
| 828 if (temp_tissue < 0.0) | |
| 126 | 829 temp_tissue *= float_desaturation_multiplier; |
| 116 | 830 else |
| 126 | 831 temp_tissue *= float_saturation_multiplier; |
| 116 | 832 } |
| 167 | 833 } |
| 116 | 834 |
| 167 | 835 ////////////////////////////////////////////////////////////////////////////// |
| 836 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 837 // ** THE JUMP-IN CODE ** |
| 838 // ** for the asm code ** | |
| 167 | 839 ////////////////////////////////////////////////////////////////////////////// |
| 840 ////////////////////////////////////////////////////////////////////////////// | |
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841 |
| 167 | 842 ////////////////////////////////////////////////////////////////////////////// |
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843 // Called every 2 seconds during diving. |
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844 // update tissues every time. |
| 184 | 845 // |
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846 // Every 6 seconds (or slower when TTS > 16): |
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847 // - update deco table (char_O_deco_time/depth) with new values. |
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848 // - update ascent time, |
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849 // - set status to zero (so we can check there is new results). |
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850 // |
| 116 | 851 void deco_calc_hauptroutine(void) |
| 852 { | |
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853 RESET_C_STACK |
| 116 | 854 calc_hauptroutine(); |
| 855 int_O_desaturation_time = 65535; | |
| 856 } | |
| 857 | |
| 167 | 858 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 859 // Reset decompression model: |
| 860 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 861 // + Reset last stop to 0m | |
| 862 // + Reset all model output. | |
| 116 | 863 void deco_clear_tissue(void) |
| 864 { | |
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865 RESET_C_STACK |
| 116 | 866 clear_tissue(); |
| 867 } | |
| 868 | |
| 167 | 869 ////////////////////////////////////////////////////////////////////////////// |
| 870 | |
| 116 | 871 void deco_calc_wo_deco_step_1_min(void) |
| 872 { | |
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873 RESET_C_STACK |
| 116 | 874 calc_wo_deco_step_1_min(); |
| 875 deco_calc_desaturation_time(); | |
| 876 } | |
| 877 | |
| 167 | 878 ////////////////////////////////////////////////////////////////////////////// |
| 879 | |
| 116 | 880 void deco_debug(void) |
| 881 { | |
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882 RESET_C_STACK |
| 116 | 883 } |
| 884 | |
| 241 | 885 |
| 886 ////////////////////////////////////////////////////////////////////////////// | |
| 887 // Find current gas in the list (if any). | |
| 888 // | |
| 889 // Input: char_I_deco_N2_ratio[] and He, to detect breathed gas. | |
| 890 // | |
| 891 // Output: sim_gas_depth_used | |
| 892 // | |
| 893 static void gas_switch_find_current(void) | |
| 894 { | |
| 895 if( sim_gas_last_used == 0 ) | |
| 896 { | |
| 897 overlay unsigned char j; | |
| 898 overlay unsigned char N2 = (unsigned char)(N2_ratio * 100 + 0.5); | |
| 899 overlay unsigned char He = (unsigned char)(He_ratio * 100 + 0.5); | |
| 900 for(j=0; j<5; ++j) | |
| 901 { | |
| 902 // Make sure to detect if we are already breathing some gas in | |
| 903 // the current list (happends when first gas do have a depth). | |
| 904 if( N2 == char_I_deco_N2_ratio[j] | |
| 905 && He == char_I_deco_He_ratio[j] ) | |
| 906 { | |
| 907 sim_gas_last_depth = char_I_deco_gas_change[j]; | |
| 908 sim_gas_last_used = j+1; | |
| 909 break; | |
| 910 } | |
| 911 } | |
| 912 } | |
| 913 } | |
| 914 | |
| 167 | 915 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 916 // Find deepest available gas. |
| 201 | 917 // |
| 241 | 918 // Input: temp_depth_limit, |
| 919 // deco_gas_change[] | |
| 920 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
| 212 | 921 // |
| 241 | 922 // RETURNS TRUE if a stop is needed for gas switch. |
| 923 // | |
| 924 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
| 212 | 925 // |
| 241 | 926 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
| 927 // are null), or during the ascent to make sure we are not passing a | |
| 928 // stop (in which case both can be already set). | |
| 929 // | |
| 930 static unsigned char gas_switch_deepest(void) | |
| 201 | 931 { |
| 241 | 932 overlay unsigned char switch_deco = 0, switch_last = 0; |
| 201 | 933 |
| 934 if (char_I_const_ppO2 == 0) | |
| 935 { | |
| 225 | 936 overlay unsigned char j; |
| 937 | |
| 241 | 938 // Loop over all enabled gas, to find the deepest one, |
| 939 // above las gas, but below temp_depth_limit. | |
| 940 for(j=0; j<5; ++j) | |
| 225 | 941 { |
| 241 | 942 // Gas not (yet) allowed ? Skip ! |
| 943 if( temp_depth_limit > deco_gas_change[j] ) | |
| 944 continue; | |
| 945 | |
| 946 // Gas deeper than the current/previous one ? Skip ! | |
| 947 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) | |
| 948 continue; | |
| 949 | |
| 950 // First, or deeper ? | |
| 951 if( (switch_last == 0) || (switch_deco < deco_gas_change[j]) ) | |
| 952 { | |
| 953 switch_deco = deco_gas_change[j]; | |
| 954 switch_last = j+1; | |
| 955 } | |
| 225 | 956 } |
| 201 | 957 } |
| 958 | |
| 203 | 959 // If there is a better gas available |
| 241 | 960 if( switch_deco ) |
| 201 | 961 { |
| 241 | 962 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
| 201 | 963 |
| 241 | 964 // Should restart gas-switch delay only when gas do changes... |
| 965 assert( sim_gas_delay <= sim_dive_mins ); | |
| 217 | 966 |
| 241 | 967 sim_gas_last_depth = switch_deco; |
| 968 sim_gas_last_used = switch_last; | |
| 969 sim_gas_delay = read_custom_function(55); | |
| 217 | 970 |
| 241 | 971 // Apply depth correction ONLY if CF#55 is not null: |
| 972 if( sim_gas_delay > 0 ) | |
| 225 | 973 { |
| 241 | 974 sim_gas_delay += sim_dive_mins; |
| 975 temp_depth_limit = switch_deco; | |
| 976 return 1; | |
| 225 | 977 } |
| 241 | 978 |
| 979 return 0; | |
| 217 | 980 } |
| 981 | |
| 241 | 982 sim_gas_delay = 0; |
| 983 return 0; | |
| 217 | 984 } |
| 985 | |
| 986 ////////////////////////////////////////////////////////////////////////////// | |
| 987 // Calculate gas switches | |
| 988 // | |
| 989 // | |
| 990 // Input: N2_ratio, He_ratio. | |
| 991 // sim_gas_last_used | |
| 992 // | |
| 993 // Output: calc_N2_ratio, calc_He_ratio | |
| 994 // | |
| 241 | 995 static void gas_switch_set(void) |
| 217 | 996 { |
| 224 | 997 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
| 217 | 998 |
| 224 | 999 if( sim_gas_last_used == 0 ) |
| 1000 { | |
| 1001 calc_N2_ratio = N2_ratio; | |
| 1002 calc_He_ratio = He_ratio; | |
| 1003 } | |
| 1004 else | |
| 1005 { | |
| 1006 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 1007 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 1008 } |
| 201 | 1009 |
| 1010 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 1011 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1012 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1013 } | |
| 1014 | |
| 1015 ////////////////////////////////////////////////////////////////////////////// | |
| 1016 // | |
| 212 | 1017 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 1018 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 1019 // Water-vapor pressure inside lumbs (ppWVapour). | |
| 1020 // | |
| 236 | 1021 // Output: ppN2, ppHe. |
| 212 | 1022 // |
| 1023 static void sim_alveolar_presures(void) | |
| 201 | 1024 { |
| 212 | 1025 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1026 | |
| 1027 //---- CCR mode : deco gas switch ? -------------------------------------- | |
| 201 | 1028 if (char_I_const_ppO2 != 0) |
| 1029 { | |
| 212 | 1030 // In CCR mode, calc_XX_ratio == XX_ratio. |
| 1031 if( temp_deco > deco_ppO2_change ) | |
| 1032 deco_diluent = ((temp_deco - const_ppO2)/(calc_N2_ratio + calc_He_ratio)); | |
| 201 | 1033 else |
| 212 | 1034 deco_diluent = ((temp_deco - deco_ppO2)/(calc_N2_ratio + calc_He_ratio)); |
| 1035 | |
| 1036 if (deco_diluent > temp_deco) | |
| 1037 deco_diluent = temp_deco; | |
| 201 | 1038 } |
| 1039 | |
| 212 | 1040 // Take deco offset into account, but not at surface. |
| 1041 if( deco_diluent > pres_surface ) | |
| 1042 deco_diluent += float_deco_distance; | |
| 1043 | |
| 1044 if( deco_diluent > ppWVapour ) | |
| 201 | 1045 { |
| 236 | 1046 ppN2 = calc_N2_ratio * (deco_diluent - ppWVapour); |
| 201 | 1047 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); |
| 1048 } | |
| 1049 else | |
| 1050 { | |
| 236 | 1051 ppN2 = 0.0; |
| 201 | 1052 ppHe = 0.0; |
| 1053 } | |
| 236 | 1054 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 1055 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 1056 } | |
| 1057 | |
| 1058 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1059 // clear_tissue |
| 1060 // | |
| 165 | 1061 // optimized in v.101 (var_N2_a) |
| 167 | 1062 // |
| 1063 // preload tissues with standard pressure for the given ambient pressure. | |
| 1064 // Note: fixed N2_ratio for standard air. | |
| 201 | 1065 // |
| 167 | 1066 static void clear_tissue(void) |
| 116 | 1067 { |
| 1068 flag_in_divemode = 0; | |
| 1069 int_O_DBS_bitfield = 0; | |
| 1070 int_O_DBS2_bitfield = 0; | |
| 1071 int_O_DBG_pre_bitfield = 0; | |
| 1072 int_O_DBG_post_bitfield = 0; | |
| 1073 char_O_NDL_at_20mtr = 255; | |
| 1074 | |
| 167 | 1075 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1076 N2_ratio = 0.7902; | |
| 212 | 1077 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1078 |
| 167 | 1079 for(ci=0; ci<16; ci++) |
| 126 | 1080 { |
| 197 | 1081 // cycle through the 16 Bühlmann tissues |
| 200 | 1082 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
| 164 | 1083 pres_tissue[ci] = p; |
| 197 | 1084 |
| 184 | 1085 read_buhlmann_coefficients(-1); |
| 165 | 1086 |
| 1087 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 1088 if( p < 0.0 ) |
| 1089 p = 0.0; | |
| 1090 pres_tissue_limit[ci] = p; | |
| 1091 | |
| 197 | 1092 // cycle through the 16 Bühlmann tissues for Helium |
| 167 | 1093 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1094 } // for 0 to 16 |
| 116 | 1095 |
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1096 clear_deco_table(); |
| 126 | 1097 char_O_deco_status = 0; |
| 1098 char_O_nullzeit = 0; | |
| 168 | 1099 int_O_ascenttime = 0; |
| 126 | 1100 char_O_gradient_factor = 0; |
| 1101 char_O_relative_gradient_GF = 0; | |
| 197 | 1102 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 1103 } |
| 116 | 1104 |
| 167 | 1105 ////////////////////////////////////////////////////////////////////////////// |
| 1106 // calc_hauptroutine | |
| 1107 // | |
| 1108 // this is the major code in dive mode calculates: | |
| 116 | 1109 // the tissues, |
| 167 | 1110 // the bottom time, |
| 1111 // and simulates the ascend with all deco stops. | |
| 171 | 1112 // |
| 1113 // The deco_state sequence is : | |
| 1114 // 3 (at surface) | |
| 1115 // +---> 0 : calc nullzeit | |
| 1116 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1117 // | +-> 1 : simulate up to 16min of stops. | |
| 1118 // | +------< not finished | |
| 1119 // +--------< finish | |
| 1120 // | |
| 167 | 1121 static void calc_hauptroutine(void) |
| 116 | 1122 { |
| 241 | 1123 static unsigned char backup_gas_used = 0; |
| 1124 static unsigned char backup_gas_depth = 0; | |
| 217 | 1125 static unsigned char backup_gas_delay = 0; |
| 186 | 1126 |
| 116 | 1127 calc_hauptroutine_data_input(); |
| 1128 | |
| 1129 if(!flag_in_divemode) | |
| 1130 { | |
| 1131 flag_in_divemode = 1; | |
| 1132 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1133 } | |
| 1134 else | |
| 1135 check_pre_dbg(); | |
| 1136 | |
| 1137 calc_hauptroutine_update_tissues(); | |
| 1138 calc_gradient_factor(); | |
| 1139 | |
| 167 | 1140 // toggle between calculation for nullzeit (bottom time), |
| 1141 // deco stops | |
| 1142 // and more deco stops (continue) | |
| 1143 switch( char_O_deco_status ) | |
| 116 | 1144 { |
| 186 | 1145 case 3: //---- At surface: start a new dive ------------------------------ |
| 1146 clear_deco_table(); | |
| 1147 copy_deco_table(); | |
| 200 | 1148 int_O_ascenttime = 0; // Reset DTR. |
| 1149 char_O_nullzeit = 0; // Reset bottom time. | |
| 1150 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 201 | 1151 |
| 217 | 1152 // Values that should be reset just once for the full real dive. |
| 1153 // This is used to record the lowest stop for the whole dive, | |
| 1154 // Including ACCROSS all simulated ascent. | |
| 1155 low_depth = 0; | |
| 1156 | |
| 1157 // Reset gas switch history. | |
| 241 | 1158 backup_gas_used = sim_gas_last_used = 0; |
| 1159 backup_gas_depth = sim_gas_last_depth = 0; | |
| 217 | 1160 backup_gas_delay = sim_gas_delay = 0; |
| 203 | 1161 sim_dive_mins = 0; |
| 1162 break; | |
| 186 | 1163 |
| 167 | 1164 case 0: //---- bottom time ----------------------------------------------- |
| 1165 calc_nullzeit(); | |
| 1166 check_ndl(); | |
| 186 | 1167 char_O_deco_status = 2; // calc ascent next time. |
| 1168 break; | |
| 1169 | |
| 1170 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 203 | 1171 // Check proposed gas at begin of ascent simulation |
| 241 | 1172 gas_switch_find_current(); |
| 1173 gas_switch_set(); | |
| 1174 | |
| 203 | 1175 sim_dive_mins = int_I_divemins; // and time. |
| 241 | 1176 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
| 1177 backup_gas_depth = sim_gas_last_depth;// And save for later simu steps. | |
| 203 | 1178 backup_gas_delay = sim_gas_delay; |
| 186 | 1179 |
| 1180 sim_ascent_to_first_stop(); | |
| 201 | 1181 |
| 1182 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
| 167 | 1183 break; |
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1184 |
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1185 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1186 calc_hauptroutine_calc_deco(); |
| 186 | 1187 |
| 1188 // If simulation is finished, restore the GF low reference, so that | |
| 1189 // next ascent simulation is done from the current depth: | |
| 217 | 1190 if( char_O_deco_status == 0 ) |
| 186 | 1191 { |
| 241 | 1192 sim_gas_last_used = backup_gas_used; |
| 1193 sim_gas_last_depth = backup_gas_depth; | |
| 203 | 1194 sim_gas_delay = backup_gas_delay; |
| 186 | 1195 } |
| 167 | 1196 break; |
| 116 | 1197 } |
| 167 | 1198 |
| 116 | 1199 check_post_dbg(); |
| 1200 } | |
| 1201 | |
| 167 | 1202 ////////////////////////////////////////////////////////////////////////////// |
| 1203 // calc_hauptroutine_data_input | |
| 1204 // | |
| 1205 // Reset all C-code dive parameters from their ASM-code values. | |
| 1206 // Detect gas change condition. | |
| 1207 // | |
| 116 | 1208 void calc_hauptroutine_data_input(void) |
| 1209 { | |
| 203 | 1210 overlay short int_temp; |
| 126 | 1211 |
| 197 | 1212 pres_respiration = int_I_pres_respiration * 0.001; |
| 1213 pres_surface = int_I_pres_surface * 0.001; | |
| 1214 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1215 He_ratio = char_I_He_ratio * 0.01; | |
| 1216 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1217 |
| 126 | 1218 // ____________________________________________________ |
| 1219 // | |
| 1220 // _____________ G A S _ C H A N G E S ________________ | |
| 1221 // ____________________________________________________ | |
| 1222 | |
| 212 | 1223 // Keep a margin of 150mbar = 1.50m |
| 1224 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1225 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1226 |
| 225 | 1227 deco_gas_change[0] = 0; |
| 1228 deco_gas_change[1] = 0; | |
| 1229 deco_gas_change[2] = 0; | |
| 1230 deco_gas_change[3] = 0; | |
| 1231 deco_gas_change[4] = 0; | |
| 116 | 1232 |
| 203 | 1233 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1234 if(char_I_deco_gas_change[0]) |
| 126 | 1235 { |
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1236 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1237 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1238 } |
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1239 if(char_I_deco_gas_change[1]) |
| 126 | 1240 { |
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1241 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1242 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1243 } |
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1244 if(char_I_deco_gas_change[2]) |
| 126 | 1245 { |
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1246 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1247 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1248 } |
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1249 if(char_I_deco_gas_change[3]) |
| 126 | 1250 { |
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1251 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1252 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1253 } |
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1254 if(char_I_deco_gas_change[4]) |
| 126 | 1255 { |
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1256 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1257 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1258 } |
| 116 | 1259 |
| 197 | 1260 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1261 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
| 1262 + pres_surface | |
| 1263 + float_deco_distance; | |
| 1264 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1265 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1266 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1267 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1268 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1269 GF_delta = GF_high - GF_low; |
| 116 | 1270 } |
| 1271 | |
| 167 | 1272 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1273 // |
| 1274 // | |
| 116 | 1275 void calc_hauptroutine_update_tissues(void) |
| 1276 { | |
| 197 | 1277 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1278 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1279 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1280 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1281 |
| 1282 if (char_I_const_ppO2 == 0) // new in v.101 | |
| 167 | 1283 pres_diluent = pres_respiration; // new in v.101 |
| 186 | 1284 else |
| 1285 { | |
| 167 | 1286 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
| 186 | 1287 if (pres_diluent > pres_respiration) // new in v.101 |
| 1288 pres_diluent = pres_respiration; // new in v.101 | |
| 1289 } | |
| 200 | 1290 if (pres_diluent > ppWVapour) // new in v.101 |
| 116 | 1291 { |
| 236 | 1292 ppN2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 200 | 1293 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 116 | 1294 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1295 } | |
| 167 | 1296 else // new in v.101 |
| 116 | 1297 { |
| 236 | 1298 ppN2 = 0.0; // new in v.101 |
| 200 | 1299 ppHe = 0.0; // new in v.101 |
| 116 | 1300 char_O_diluent = 0; |
| 1301 } | |
| 1302 | |
| 1303 if(!char_I_step_is_1min) | |
| 192 | 1304 calc_tissue(0); |
| 116 | 1305 else |
| 192 | 1306 calc_tissue(1); |
| 186 | 1307 |
| 192 | 1308 // Calc limit for surface, ie. GF_high. |
| 1309 calc_limit(GF_high); | |
| 186 | 1310 |
| 203 | 1311 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 1312 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 192 | 1313 |
| 1314 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1315 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1316 { |
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1317 char_O_nullzeit = 0; // deco necessary |
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1318 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1319 } |
| 171 | 1320 } |
| 1321 | |
| 116 | 1322 |
| 167 | 1323 ////////////////////////////////////////////////////////////////////////////// |
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1324 // Compute stops. |
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1325 // |
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1326 // Note: because this can be very long, break on 16 iterations, and set state |
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1327 // to 0 when finished, or to 1 when needing to continue. |
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1328 // |
| 116 | 1329 void calc_hauptroutine_calc_deco(void) |
| 1330 { | |
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1331 overlay unsigned char loop; |
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1332 |
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1333 for(loop = 0; loop < 16; ++loop) |
| 116 | 1334 { |
| 241 | 1335 // Do not ascent while doing a gas switch ? |
| 203 | 1336 if( sim_gas_delay <= sim_dive_mins ) |
| 1337 { | |
| 241 | 1338 if( calc_nextdecodepth() ) |
| 1339 { | |
| 1340 if( temp_depth_limit == 0 ) | |
| 1341 goto Surface; | |
| 116 | 1342 |
| 241 | 1343 //---- We hit a stop at temp_depth_limit --------------------- |
| 1344 temp_deco = temp_depth_limit * 0.09985 // Convert to relative bar, | |
| 1345 + pres_surface; // To absolute. | |
| 1346 update_deco_table(); // Adds a one minute stops. | |
| 1347 } | |
| 1348 else | |
| 1349 { | |
| 1350 //---- No stop ----------------------------------------------- | |
| 1351 temp_deco -= 0.9985; // Ascend 10m, no wait. | |
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1352 |
| 241 | 1353 //---- Finish computations once surface is reached ----------- |
| 1354 if( temp_deco <= pres_surface ) | |
| 1355 { | |
| 1356 Surface: | |
| 1357 copy_deco_table(); | |
| 1358 calc_ascenttime(); | |
| 1359 char_O_deco_status = 0; // calc nullzeit next time. | |
| 1360 return; | |
| 1361 } | |
| 1362 } | |
| 212 | 1363 |
| 1364 } | |
| 1365 else | |
| 241 | 1366 update_deco_table(); // Just pass one minute. |
| 197 | 1367 |
| 241 | 1368 //---- Then update tissue -------------------------------------------- |
| 203 | 1369 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1370 gas_switch_set(); // Apply any simulated gas change, once validated. |
| 212 | 1371 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1372 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1373 } |
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1374 |
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1375 // Surface not reached, need more stops... |
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1376 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1377 } |
| 1378 | |
| 167 | 1379 ////////////////////////////////////////////////////////////////////////////// |
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1380 // Simulation ascention to first deco stop. |
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1381 // |
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1382 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1383 // there is no need to break on more that 16 iterations |
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1384 // (or we are already in deep shit). |
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1385 // |
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1386 void sim_ascent_to_first_stop(void) |
| 116 | 1387 { |
| 171 | 1388 update_startvalues(); |
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1389 clear_deco_table(); |
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1390 |
| 200 | 1391 temp_deco = pres_respiration; // Starts from current real depth. |
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1392 |
| 212 | 1393 // Do we have a gas switch going on ? |
| 1394 if( sim_gas_delay > sim_dive_mins ) | |
| 1395 return; | |
| 1396 | |
| 241 | 1397 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1398 for(;;) |
| 116 | 1399 { |
| 241 | 1400 // Try ascending 1 full minute. |
| 1401 temp_deco -= 0.9985; // 1 min, at 10m/min. ~ 1bar. | |
| 203 | 1402 |
| 212 | 1403 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1404 sim_limit(GF_low); | |
| 1405 | |
| 1406 // Did we reach deepest remaining stop ? | |
| 241 | 1407 if( temp_deco < sim_lead_tissue_limit ) |
| 212 | 1408 { |
| 241 | 1409 temp_deco += 0.9985; // Restore last correct depth, |
| 1410 break; // End fast ascent. | |
| 212 | 1411 } |
| 1412 | |
| 203 | 1413 // Did we reach surface ? |
| 1414 if( temp_deco <= pres_surface ) | |
| 1415 { | |
| 1416 temp_deco = pres_surface; // Yes: finished ! | |
| 1417 break; | |
| 1418 } | |
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1419 |
| 241 | 1420 // Check for gas change below new depth ? |
| 1421 temp_depth_limit = (temp_deco - pres_surface) / 0.09985; | |
| 1422 | |
| 1423 if( gas_switch_deepest() ) | |
| 1424 { | |
| 1425 temp_deco = temp_depth_limit * 0.09985 + pres_surface; | |
| 212 | 1426 break; |
| 241 | 1427 } |
| 171 | 1428 |
| 203 | 1429 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1430 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
| 203 | 1431 sim_tissue(1); // and update tissues for 1 min. |
| 1432 } | |
| 167 | 1433 } |
| 116 | 1434 |
| 167 | 1435 ////////////////////////////////////////////////////////////////////////////// |
| 1436 // calc_tissue | |
| 1437 // | |
| 116 | 1438 // optimized in v.101 |
| 167 | 1439 // |
| 184 | 1440 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1441 { |
| 236 | 1442 assert( 0.00 <= ppN2 && ppN2 < 6.40 ); // 80% N2 at 70m |
| 1443 assert( 0.00 <= ppHe && ppHe < 18.9 ); // 90% He at 200m | |
| 1444 | |
| 126 | 1445 for (ci=0;ci<16;ci++) |
| 1446 { | |
| 184 | 1447 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1448 |
| 126 | 1449 // N2 |
| 236 | 1450 temp_tissue = (ppN2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1451 temp_tissue_safety(); |
| 167 | 1452 pres_tissue[ci] += temp_tissue; |
| 165 | 1453 |
| 126 | 1454 // He |
| 200 | 1455 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1456 temp_tissue_safety(); |
| 167 | 1457 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1458 } |
| 167 | 1459 } |
| 116 | 1460 |
| 167 | 1461 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1462 // calc_limit |
| 167 | 1463 // |
| 192 | 1464 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1465 // |
| 192 | 1466 static void calc_limit(PARAMETER float GF_current) |
| 167 | 1467 { |
| 192 | 1468 char_O_gtissue_no = 255; |
| 1469 calc_lead_tissue_limit = 0.0; | |
| 1470 | |
| 1471 for (ci=0;ci<16;ci++) | |
| 1472 { | |
| 1473 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1474 | |
| 1475 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
| 1476 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
| 1477 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1478 |
| 192 | 1479 // Apply the Eric Baker's varying gradient factor correction. |
| 1480 // Note: the correction factor depends both on GF and b, | |
| 1481 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1482 // so that can change who is the leading gas... | |
| 1483 // Note: Also depends of the GF. So the calcul is different for | |
| 1484 // GF_low, current GF, or GF_high... | |
| 1485 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1486 // hence what would happend at surface, | |
| 1487 // hence at GF_high. | |
| 1488 if( char_I_deco_model == 1 ) | |
| 1489 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1490 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1491 else | |
| 1492 p = (p - var_N2_a) * var_N2_b; | |
| 1493 if( p < 0 ) p = 0; | |
| 1494 | |
| 1495 pres_tissue_limit[ci] = p; | |
| 1496 if( p > calc_lead_tissue_limit ) | |
| 1497 { | |
| 1498 char_O_gtissue_no = ci; | |
| 1499 calc_lead_tissue_limit = p; | |
| 1500 } | |
| 1501 } | |
| 197 | 1502 |
| 1503 assert( char_O_gtissue_no < 16 ); | |
| 1504 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1505 } |
| 1506 | |
| 1507 ////////////////////////////////////////////////////////////////////////////// | |
| 1508 // calc_nullzeit | |
| 1509 // | |
| 1510 // calculates the remaining bottom time | |
| 1511 // | |
| 1512 // unchanged in v.101 | |
| 1513 // | |
| 1514 static void calc_nullzeit(void) | |
| 1515 { | |
| 203 | 1516 overlay unsigned char loop; |
| 200 | 1517 update_startvalues(); |
| 167 | 1518 |
| 116 | 1519 char_O_nullzeit = 0; |
| 167 | 1520 for(loop = 1; loop <= 17; loop++) |
| 116 | 1521 { |
| 1522 backup_sim_pres_tissue(); | |
| 197 | 1523 sim_tissue(2); // 10 min. |
| 192 | 1524 sim_limit(GF_high); |
| 167 | 1525 |
| 192 | 1526 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1527 { |
| 1528 restore_sim_pres_tissue(); | |
| 1529 break; | |
| 1530 } | |
| 1531 // Validate once we know its good. | |
| 1532 char_O_nullzeit += 10; | |
| 167 | 1533 } |
| 1534 | |
| 116 | 1535 if (char_O_nullzeit < 60) |
| 1536 { | |
| 167 | 1537 for(loop=1; loop <= 10; loop++) |
| 116 | 1538 { |
| 197 | 1539 sim_tissue(1); // 1 min |
| 192 | 1540 sim_limit(GF_high); |
| 1541 | |
| 1542 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1543 break; |
| 1544 char_O_nullzeit++; | |
| 167 | 1545 } |
| 185 | 1546 } |
| 1547 } | |
| 116 | 1548 |
| 167 | 1549 ////////////////////////////////////////////////////////////////////////////// |
| 1550 // backup_sim_pres_tissue | |
| 1551 // | |
| 116 | 1552 void backup_sim_pres_tissue(void) |
| 1553 { | |
| 167 | 1554 overlay unsigned char x; |
| 1555 | |
| 1556 for(x = 0; x<32; x++) | |
| 126 | 1557 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1558 } |
| 116 | 1559 |
| 167 | 1560 ////////////////////////////////////////////////////////////////////////////// |
| 1561 // restore_sim_pres_tissue | |
| 1562 // | |
| 116 | 1563 void restore_sim_pres_tissue(void) |
| 1564 { | |
| 167 | 1565 overlay unsigned char x; |
| 1566 | |
| 1567 for(x = 0; x<32; x++) | |
| 126 | 1568 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1569 } |
| 116 | 1570 |
| 167 | 1571 ////////////////////////////////////////////////////////////////////////////// |
| 1572 // calc_ascenttime | |
| 1573 // | |
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1574 static void calc_ascenttime(void) |
| 116 | 1575 { |
| 126 | 1576 if (pres_respiration > pres_surface) |
| 1577 { | |
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1578 overlay unsigned char x; |
| 168 | 1579 |
| 192 | 1580 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
| 1581 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
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1582 if (ascent < 0.0) |
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1583 ascent = 0.0; |
| 203 | 1584 int_O_ascenttime = (unsigned short)(ascent + 0.99); |
| 168 | 1585 |
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1586 for(x=0; x<32 && internal_deco_depth[x]; x++) |
| 203 | 1587 int_O_ascenttime += (unsigned short)internal_deco_time[x]; |
| 126 | 1588 } |
| 1589 else | |
| 168 | 1590 int_O_ascenttime = 0; |
| 167 | 1591 } |
| 116 | 1592 |
| 167 | 1593 ////////////////////////////////////////////////////////////////////////////// |
| 1594 // update_startvalues | |
| 1595 // | |
| 116 | 1596 // updated in v.102 |
| 167 | 1597 // |
| 116 | 1598 void update_startvalues(void) |
| 1599 { | |
| 167 | 1600 overlay unsigned char x; |
| 116 | 1601 |
| 201 | 1602 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1603 for (x = 0;x<16;x++) |
| 1604 { | |
| 1605 sim_pres_tissue[x] = pres_tissue[x]; | |
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1606 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1607 } |
| 197 | 1608 |
| 201 | 1609 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1610 sim_lead_tissue_limit = 0.0; |
| 1611 sim_lead_tissue_no = 255; | |
| 167 | 1612 } |
| 116 | 1613 |
| 167 | 1614 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1615 // sim_tissue |
| 167 | 1616 // |
| 116 | 1617 // optimized in v.101 |
| 167 | 1618 // |
| 1619 // Function very simular to calc_tissue, but: | |
| 1620 // + Use a 1min or 10min period. | |
| 1621 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1622 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1623 { |
| 236 | 1624 assert( 0.00 <= ppN2 && ppN2 < 6.40 ); // 80% N2 at 70m |
| 1625 assert( 0.00 <= ppHe && ppHe < 18.9 ); // 90% He at 200m | |
| 1626 | |
| 192 | 1627 for(ci=0; ci<16; ci++) |
| 126 | 1628 { |
| 184 | 1629 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1630 |
| 126 | 1631 // N2 |
| 236 | 1632 temp_tissue = (ppN2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1633 temp_tissue_safety(); |
| 167 | 1634 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1635 |
| 1636 // He | |
| 200 | 1637 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1638 temp_tissue_safety(); |
| 167 | 1639 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1640 } |
| 167 | 1641 } |
| 116 | 1642 |
| 167 | 1643 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1644 // sim_limit() |
| 1645 // | |
| 1646 // New in v.111 | |
| 1647 // | |
| 1648 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1649 // different depth, because it depends on current gradient factor. | |
| 167 | 1650 // |
| 192 | 1651 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1652 { |
| 212 | 1653 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1654 | |
| 192 | 1655 sim_lead_tissue_limit = 0.0; |
| 212 | 1656 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1657 |
| 1658 for(ci=0; ci<16; ci++) | |
| 1659 { | |
| 241 | 1660 overlay float N2 = sim_pres_tissue[ci]; |
| 1661 overlay float He = (sim_pres_tissue+16)[ci]; | |
| 1662 overlay float p = N2 + He; | |
| 192 | 1663 |
| 1664 read_buhlmann_coefficients(-1); | |
| 241 | 1665 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
| 1666 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 192 | 1667 |
| 1668 // Apply the Eric Baker's varying gradient factor correction. | |
| 1669 // Note: the correction factor depends both on GF and b, | |
| 1670 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1671 // so that can change who is the leading gas... | |
| 1672 // Note: Also depends of the GF_current... | |
| 1673 if( char_I_deco_model == 1 ) | |
| 1674 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1675 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1676 else | |
| 1677 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1678 if( p < 0.0 ) p = 0.0; |
| 192 | 1679 |
| 241 | 1680 assert( 0.0 <= p && p <= 14.0 ); |
| 1681 | |
| 192 | 1682 sim_pres_tissue_limit[ci] = p; |
| 1683 if( p > sim_lead_tissue_limit ) | |
| 1684 { | |
| 1685 sim_lead_tissue_no = ci; | |
| 1686 sim_lead_tissue_limit = p; | |
| 1687 } | |
| 1688 } // for ci | |
| 197 | 1689 |
| 1690 assert( sim_lead_tissue_no < 16 ); | |
| 237 | 1691 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1692 } |
| 116 | 1693 |
| 167 | 1694 ////////////////////////////////////////////////////////////////////////////// |
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1695 // clear_deco_table |
| 167 | 1696 // |
| 1697 // unchanged in v.101 | |
| 1698 // | |
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1699 static void clear_deco_table(void) |
| 116 | 1700 { |
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1701 overlay unsigned char x; |
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1702 |
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1703 for(x=0; x<32; ++x) |
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1704 { |
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1705 internal_deco_time [x] = 0; |
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1706 internal_deco_depth[x] = 0; |
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1707 } |
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1708 } |
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1709 |
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1710 ////////////////////////////////////////////////////////////////////////////// |
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1711 // update_deco_table |
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1712 // |
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1713 // Add 1 min to current stop. |
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1714 // |
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1715 // Inputs: |
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1716 // temp_depth_limit = stop's depth, in meters. |
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1717 // In/Out: |
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1718 // internal_deco_depth[] : depth (in meters) of each stops. |
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1719 // internal_deco_time [] : time (in minutes) of each stops. |
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1720 // |
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1721 static void update_deco_table() |
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1722 { |
| 192 | 1723 overlay unsigned char x; |
| 200 | 1724 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1725 |
| 192 | 1726 for(x=0; x<32; ++x) |
| 1727 { | |
| 212 | 1728 // Make sure deco-stops are recorded in order: |
| 1729 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
| 1730 | |
| 200 | 1731 if( internal_deco_depth[x] == temp_depth_limit ) |
| 192 | 1732 { |
| 1733 // Do not overflow (max 255') | |
| 1734 if( internal_deco_time[x] < 255 ) | |
| 1735 { | |
| 1736 internal_deco_time[x]++; | |
| 1737 return; | |
| 1738 } | |
| 1739 // But store extra in the next stop... | |
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1740 } |
| 192 | 1741 |
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1742 if( internal_deco_depth[x] == 0 ) |
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1743 { |
| 192 | 1744 internal_deco_depth[x] = temp_depth_limit; |
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1745 internal_deco_time[x] = 1; |
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1746 return; |
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1747 } |
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1748 } |
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1749 |
| 192 | 1750 // Can't store stops at more than 96m. |
| 1751 // Or stops at less that 3m too. | |
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1752 // Just do nothing with that... |
| 167 | 1753 } |
| 116 | 1754 |
| 167 | 1755 ////////////////////////////////////////////////////////////////////////////// |
| 1756 // calc_gradient_factor | |
| 1757 // | |
| 165 | 1758 // optimized in v.101 (var_N2_a) |
| 116 | 1759 // new code in v.102 |
| 167 | 1760 // |
| 1761 static void calc_gradient_factor(void) | |
| 116 | 1762 { |
| 197 | 1763 overlay float gf; |
| 237 | 1764 |
| 197 | 1765 assert( char_O_gtissue_no < 16 ); |
| 237 | 1766 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1767 |
| 116 | 1768 // tissue > respiration (entsaettigungsvorgang) |
| 1769 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1770 // dh. 0% = respiration == tissue | |
| 1771 // dh. 100% = respiration == limit | |
| 197 | 1772 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
| 1773 if( temp_tissue < pres_respiration ) | |
| 1774 gf = 0.0; | |
| 1775 else | |
| 1776 { | |
| 1777 gf = (temp_tissue - pres_respiration) | |
| 1778 / (temp_tissue - pres_tissue_limit[char_O_gtissue_no]) | |
| 1779 * 100.0; | |
| 1780 if( gf > 255.0 ) gf = 255.0; | |
| 1781 if( gf < 0.0 ) gf = 0.0; | |
| 1782 } | |
| 1783 char_O_gradient_factor = (unsigned char)gf; | |
| 116 | 1784 |
| 1785 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1786 { | |
| 197 | 1787 overlay float rgf; |
| 1788 | |
| 1789 if( low_depth == 0 ) | |
| 1790 rgf = GF_high; | |
| 1791 else | |
| 1792 { | |
| 241 | 1793 overlay float temp1 = low_depth * 0.09985; |
| 197 | 1794 overlay float temp2 = pres_respiration - pres_surface; |
| 186 | 1795 |
| 197 | 1796 if (temp2 <= 0) |
| 1797 rgf = GF_high; | |
| 1798 else if (temp2 >= temp1) | |
| 1799 rgf = GF_low; | |
| 1800 else | |
| 1801 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1802 } | |
| 186 | 1803 |
| 197 | 1804 rgf = gf / rgf; // gf is already in percent |
| 1805 if( rgf < 0.0 ) rgf = 0.0; | |
| 1806 if( rgf > 255.0 ) rgf = 255.0; | |
| 1807 char_O_relative_gradient_GF = (unsigned char)rgf; | |
| 116 | 1808 } // calc relative gradient factor |
| 1809 else | |
| 1810 { | |
| 186 | 1811 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1812 } |
| 167 | 1813 } |
| 116 | 1814 |
| 167 | 1815 ////////////////////////////////////////////////////////////////////////////// |
| 1816 // deco_calc_desaturation_time | |
| 1817 // | |
| 116 | 1818 // FIXED N2_ratio |
| 1819 // unchanged in v.101 | |
| 233 | 1820 // Inputs: int_I_pres_surface, ppWVapour, char_I_desaturation_multiplier |
| 1821 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] | |
| 167 | 1822 // |
| 116 | 1823 void deco_calc_desaturation_time(void) |
| 1824 { | |
| 203 | 1825 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 200 | 1826 overlay float temp1; |
| 197 | 1827 overlay float temp2; |
| 1828 overlay float temp3; | |
| 1829 overlay float temp4; | |
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1830 RESET_C_STACK |
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1831 |
| 233 | 1832 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 1833 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 1834 | |
| 237 | 1835 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 1836 pres_surface = int_I_pres_surface * 0.001; |
| 236 | 1837 ppN2 = N2_ratio * (pres_surface - ppWVapour); |
| 126 | 1838 int_O_desaturation_time = 0; |
| 1839 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 233 | 1840 |
| 126 | 1841 for (ci=0;ci<16;ci++) |
| 1842 { | |
| 200 | 1843 overlay float var_N2_halftime = buhlmann_ht[ci]; |
| 1844 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; | |
| 116 | 1845 |
| 126 | 1846 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1847 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1848 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1849 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1850 // N2 | |
| 236 | 1851 temp1 = 1.05 * ppN2; |
| 126 | 1852 temp1 = temp1 - pres_tissue[ci]; |
| 236 | 1853 temp2 = ppN2 - pres_tissue[ci]; |
| 126 | 1854 if (temp2 >= 0.0) |
| 1855 { | |
| 233 | 1856 temp1 = 0.0; |
| 1857 temp2 = 0.0; | |
| 126 | 1858 } |
| 1859 else | |
| 1860 temp1 = temp1 / temp2; | |
| 1861 if (temp1 > 0.0) | |
| 1862 { | |
| 1863 temp1 = log(1.0 - temp1); | |
| 1864 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1865 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1866 // minus because log is negative | |
| 165 | 1867 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 | 1868 } |
| 1869 else | |
| 1870 { | |
| 233 | 1871 temp1 = 0.0; |
| 1872 temp2 = 0.0; | |
| 126 | 1873 } |
| 116 | 1874 |
| 126 | 1875 // He |
| 167 | 1876 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1877 if (temp3 >= 0.0) |
| 1878 { | |
| 233 | 1879 temp3 = 0.0; |
| 1880 temp4 = 0.0; | |
| 126 | 1881 } |
| 1882 else | |
| 167 | 1883 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 126 | 1884 if (temp3 > 0.0) |
| 1885 { | |
| 1886 temp3 = log(1.0 - temp3); | |
| 1887 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1888 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1889 // minus because log is negative | |
| 165 | 1890 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1891 } |
| 1892 else | |
| 1893 { | |
| 233 | 1894 temp3 = 0.0; |
| 1895 temp4 = 0.0; | |
| 126 | 1896 } |
| 116 | 1897 |
| 126 | 1898 // saturation_time (for flight) |
| 1899 if (temp4 > temp2) | |
| 203 | 1900 desat_time = (unsigned short)temp4; |
| 126 | 1901 else |
| 203 | 1902 desat_time = (unsigned short)temp2; |
| 167 | 1903 if(desat_time > int_O_desaturation_time) |
| 1904 int_O_desaturation_time = desat_time; | |
| 116 | 1905 |
| 126 | 1906 // N2 saturation in multiples of halftime for display purposes |
| 1907 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1908 temp2 = temp2 + 80.0; // set center | |
| 1909 if (temp2 < 0.0) | |
| 1910 temp2 = 0.0; | |
| 1911 if (temp2 > 255.0) | |
| 1912 temp2 = 255.0; | |
| 1913 char_O_tissue_saturation[ci] = (char)temp2; | |
| 233 | 1914 |
| 126 | 1915 // He saturation in multiples of halftime for display purposes |
| 1916 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1917 temp4 = temp4 + 80.0; // set center | |
| 1918 if (temp4 < 0.0) | |
| 1919 temp4 = 0.0; | |
| 1920 if (temp4 > 255.0) | |
| 1921 temp4 = 255.0; | |
| 167 | 1922 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1923 } // for |
| 167 | 1924 } |
| 116 | 1925 |
| 167 | 1926 ////////////////////////////////////////////////////////////////////////////// |
| 1927 // calc_wo_deco_step_1_min | |
| 1928 // | |
| 116 | 1929 // FIXED N2 Ratio |
| 1930 // optimized in v.101 (...saturation_multiplier) | |
| 1931 // desaturation slowed down to 70,42% | |
| 167 | 1932 // |
| 1933 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1934 { |
| 1935 if(flag_in_divemode) | |
| 1936 { | |
| 1937 flag_in_divemode = 0; | |
| 1938 set_dbg_end_of_dive(); | |
| 1939 } | |
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1940 |
| 126 | 1941 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 233 | 1942 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
| 1943 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
| 236 | 1944 ppN2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body |
| 200 | 1945 ppHe = 0.0; |
| 126 | 1946 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 1947 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 1948 |
| 192 | 1949 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 1950 |
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1951 clear_deco_table(); |
| 200 | 1952 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 1953 char_O_nullzeit = 0; |
| 168 | 1954 int_O_ascenttime = 0; |
| 126 | 1955 calc_gradient_factor(); |
| 167 | 1956 } |
| 126 | 1957 |
| 167 | 1958 ////////////////////////////////////////////////////////////////////////////// |
| 1959 ////////////////////////////////////////////////////////////////////////////// | |
| 1960 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1961 ////////////////////////////////////////////////////////////////////////////// | |
| 1962 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1963 |
| 184 | 1964 #ifndef CROSS_COMPILE |
| 116 | 1965 void deco_hash(void) |
| 1966 { | |
| 167 | 1967 overlay unsigned char md_i, md_j; // Loop index. |
| 1968 overlay unsigned char md_t; | |
| 1969 overlay unsigned char md_buffer[16]; | |
| 1970 overlay unsigned char md_temp; | |
| 203 | 1971 overlay unsigned short md_pointer; |
| 167 | 1972 |
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1973 RESET_C_STACK |
| 126 | 1974 |
| 1975 // init | |
| 164 | 1976 for(md_i=0;md_i<16;md_i++) |
| 126 | 1977 { |
| 1978 md_state[md_i] = 0; | |
| 164 | 1979 char_O_hash[md_i] = 0; |
| 126 | 1980 } // for md_i 16 |
| 116 | 1981 |
| 126 | 1982 _asm |
| 167 | 1983 movlw 0x01 // md_pi address. |
| 1984 movwf TBLPTRU,0 | |
| 1985 movlw 0x7E | |
| 1986 movwf TBLPTRH,0 | |
| 1987 movlw 0x00 | |
| 1988 movwf TBLPTRL,0 | |
| 126 | 1989 _endasm; |
| 165 | 1990 md_i = 0; |
| 1991 do { | |
| 126 | 1992 _asm |
| 1993 TBLRDPOSTINC | |
| 1994 movff TABLAT,md_temp | |
| 1995 _endasm | |
| 165 | 1996 md_pi_subst[md_i++] = md_temp; |
| 1997 } while( md_i != 0 ); | |
| 1998 | |
| 126 | 1999 _asm |
| 167 | 2000 movlw 0x00 |
| 2001 movwf TBLPTRU,0 | |
| 2002 movlw 0x00 | |
| 2003 movwf TBLPTRH,0 | |
| 2004 movlw 0x00 | |
| 2005 movwf TBLPTRL,0 | |
| 126 | 2006 _endasm |
| 167 | 2007 |
| 126 | 2008 // cycle buffers |
| 2009 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 2010 { | |
| 2011 md_t = 0; | |
| 2012 for (md_i=0;md_i<16;md_i++) | |
| 2013 { | |
| 2014 if(md_pointer == 9) | |
| 164 | 2015 md_temp = char_O_hash[md_i]; |
| 126 | 2016 else |
| 2017 { | |
| 2018 _asm | |
| 167 | 2019 TBLRDPOSTINC |
| 2020 movff TABLAT,md_temp | |
| 126 | 2021 _endasm |
| 2022 } // else | |
| 167 | 2023 |
| 2024 md_buffer[md_i] = md_temp; | |
| 186 | 2025 md_state[md_i+16] = md_temp; |
| 2026 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2027 } // for md_i 16 |
| 2028 | |
| 2029 for (md_i=0;md_i<18;md_i++) | |
| 2030 { | |
| 2031 for (md_j=0;md_j<48;md_j++) | |
| 2032 { | |
| 167 | 2033 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2034 md_t = md_state[md_j]; |
| 2035 } // for md_j 48 | |
| 2036 md_t = (unsigned char)(md_t+1); | |
| 2037 } // for md_i 18 | |
| 164 | 2038 md_t = char_O_hash[15]; |
| 126 | 2039 |
| 2040 for (md_i=0;md_i<16;md_i++) | |
| 2041 { | |
| 167 | 2042 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2043 md_t = char_O_hash[md_i]; |
| 126 | 2044 } // for md_i 16 |
| 2045 } // for md_pointer | |
| 116 | 2046 } // void deco_hash(void) |
| 184 | 2047 #endif |
| 116 | 2048 |
| 167 | 2049 ////////////////////////////////////////////////////////////////////////////// |
| 2050 // deco_clear_CNS_fraction | |
| 2051 // | |
| 116 | 2052 // new in v.101 |
| 167 | 2053 // |
| 116 | 2054 void deco_clear_CNS_fraction(void) |
| 2055 { | |
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2056 RESET_C_STACK |
| 237 | 2057 |
| 126 | 2058 CNS_fraction = 0.0; |
| 2059 char_O_CNS_fraction = 0; | |
| 167 | 2060 } |
| 116 | 2061 |
| 167 | 2062 ////////////////////////////////////////////////////////////////////////////// |
| 2063 // deco_calc_CNS_fraction | |
| 2064 // | |
| 116 | 2065 // new in v.101 |
| 2066 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 2067 // |
| 116 | 2068 // Input: char_I_actual_ppO2 |
| 2069 // Output: char_O_CNS_fraction | |
| 2070 // Uses and Updates: CNS_fraction | |
| 2071 // Uses: acutal_ppO2 | |
| 167 | 2072 // |
| 116 | 2073 void deco_calc_CNS_fraction(void) |
| 2074 { | |
| 167 | 2075 overlay float actual_ppO2; |
| 126 | 2076 RESET_C_STACK |
| 167 | 2077 |
| 237 | 2078 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); |
| 2079 assert( char_I_actual_ppO2 > 15 ); | |
| 2080 | |
| 126 | 2081 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 2082 |
| 126 | 2083 if (char_I_actual_ppO2 < 50) |
| 2084 CNS_fraction = CNS_fraction;// no changes | |
| 2085 else if (char_I_actual_ppO2 < 60) | |
| 2086 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 2087 else if (char_I_actual_ppO2 < 70) | |
| 2088 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 2089 else if (char_I_actual_ppO2 < 80) | |
| 2090 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 2091 else if (char_I_actual_ppO2 < 90) | |
| 2092 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 2093 else if (char_I_actual_ppO2 < 110) | |
| 2094 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 2095 else if (char_I_actual_ppO2 < 150) | |
| 2096 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 2097 else if (char_I_actual_ppO2 < 160) | |
| 2098 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 2099 else if (char_I_actual_ppO2 < 165) | |
| 2100 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 | |
| 2101 else if (char_I_actual_ppO2 < 170) | |
| 2102 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 2103 else if (char_I_actual_ppO2 < 175) | |
| 2104 CNS_fraction = 0.00136 + CNS_fraction; | |
| 2105 else if (char_I_actual_ppO2 < 180) | |
| 2106 CNS_fraction = 0.00180 + CNS_fraction; | |
| 2107 else if (char_I_actual_ppO2 < 185) | |
| 2108 CNS_fraction = 0.00237 + CNS_fraction; | |
| 2109 else if (char_I_actual_ppO2 < 190) | |
| 2110 CNS_fraction = 0.00310 + CNS_fraction; | |
| 2111 else if (char_I_actual_ppO2 < 195) | |
| 2112 CNS_fraction = 0.00401 + CNS_fraction; | |
| 2113 else if (char_I_actual_ppO2 < 200) | |
| 2114 CNS_fraction = 0.00517 + CNS_fraction; | |
| 2115 else if (char_I_actual_ppO2 < 230) | |
| 2116 CNS_fraction = 0.0209 + CNS_fraction; | |
| 2117 else | |
| 2118 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 2119 |
| 126 | 2120 if (CNS_fraction > 2.5) |
| 2121 CNS_fraction = 2.5; | |
| 2122 if (CNS_fraction < 0.0) | |
| 2123 CNS_fraction = 0.0; | |
| 2124 | |
| 2125 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2126 } |
| 116 | 2127 |
| 167 | 2128 ////////////////////////////////////////////////////////////////////////////// |
| 2129 // deco_calc_CNS_decrease_15min | |
| 2130 // | |
| 116 | 2131 // new in v.101 |
| 167 | 2132 // |
| 116 | 2133 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2134 // (Used in sleepmode, for low battery mode). |
| 167 | 2135 // |
| 116 | 2136 // Output: char_O_CNS_fraction |
| 2137 // Uses and Updates: CNS_fraction | |
| 167 | 2138 // |
| 116 | 2139 void deco_calc_CNS_decrease_15min(void) |
| 2140 { | |
| 237 | 2141 RESET_C_STACK |
| 2142 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
| 2143 | |
| 126 | 2144 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2145 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2146 } | |
| 116 | 2147 |
| 167 | 2148 ////////////////////////////////////////////////////////////////////////////// |
| 2149 // deco_calc_percentage | |
| 2150 // | |
| 116 | 2151 // new in v.101 |
| 167 | 2152 // |
| 116 | 2153 // calculates int_I_temp * char_I_temp / 100 |
| 2154 // output is int_I_temp | |
| 200 | 2155 // |
| 2156 // Used to compute NoFly remaining time. | |
|
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2157 // |
| 116 | 2158 void deco_calc_percentage(void) |
| 2159 { | |
|
122
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|
2160 RESET_C_STACK |
|
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2161 |
| 237 | 2162 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 2163 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
| 2164 | |
|
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2165 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2166 |
| 2167 assert( int_I_temp < 1440 ); // Less than 24h... | |
|
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2168 } |
|
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2169 |
|
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2170 |
|
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2171 ////////////////////////////////////////////////////////////////////////////// |
|
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2172 // deco_gas_volumes |
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2173 // |
|
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2174 // new in v.111 |
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2175 // |
|
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2176 // calculates volumes for each gas. |
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2177 // |
|
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2178 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
d995e220ddac
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2179 // Gas list. |
|
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2180 // char_I_first_gas is the bottom gas. |
|
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2181 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
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2182 // CF#54 == TRUE if shallowest stop first. |
|
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2183 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) |
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2184 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0). |
| 224 | 2185 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
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2186 // |
|
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|
2187 void deco_gas_volumes(void) |
|
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2188 { |
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2189 overlay float volumes[5]; |
|
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2190 overlay float ascent_usage; |
|
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2191 overlay unsigned char i, deepest_first; |
| 241 | 2192 overlay unsigned char gas; |
|
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2193 RESET_C_STACK |
|
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2194 |
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2195 //---- initialize with bottom consumption -------------------------------- |
|
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2196 for(i=0; i<5; ++i) // Nothing yet... |
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2197 volumes[i] = 0.0; |
|
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2198 |
| 241 | 2199 assert(1 <= char_I_first_gas && char_I_first_gas <= 5); |
| 2200 gas = char_I_first_gas - 1; | |
| 2201 | |
| 2202 volumes[gas] | |
|
240
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2203 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. |
|
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2204 * char_I_bottom_time // in minutes. |
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2205 * read_custom_function(56) // In deci-liter/minutes. |
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2206 * 0.1; // deci-liters --> liters. |
|
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2207 |
|
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|
2208 //---- Ascent usage ------------------------------------------------------ |
|
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2209 |
|
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2210 deepest_first = read_custom_function(54) == 0; |
|
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2211 ascent_usage = read_custom_function(57) * 0.1; // In liter/minutes. |
|
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2212 |
| 224 | 2213 // Usage up to the first stop: |
| 2214 // - computed at MAX depth (easier, safer), | |
|
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2215 // - with an ascent speed of 10m/min. |
| 224 | 2216 // - with ascent litter / minutes. |
|
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2217 // - still using bottom gas: |
| 241 | 2218 volumes[gas] |
|
240
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2219 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar |
|
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2220 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) |
|
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2221 * ascent_usage; // Consumption ( xxx / min @ 1 bar) |
|
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2222 |
|
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|
2223 for(i=0; i<32; ++i) |
|
222
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2224 { |
| 241 | 2225 overlay unsigned char j; |
|
234
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|
2226 overlay unsigned char depth, time, ascent; |
|
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|
2227 |
|
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2228 // Manage stops in reverse order (CF#54) |
|
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|
2229 if( deepest_first ) |
|
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|
2230 { |
| 241 | 2231 time = char_O_deco_time[i]; |
|
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2232 if( time == 0 ) break; // End of table: done. |
|
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2233 |
|
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2234 ascent = depth = char_O_deco_depth[i]; |
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2235 if( i < 31 ) |
|
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2236 ascent -= char_O_deco_depth[i+1]; |
|
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2237 } |
|
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2238 else |
|
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2239 { |
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2240 time = char_O_deco_time[31-i]; |
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2241 if( time == 0 ) continue; // not yet: still searh table. |
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2242 |
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2243 ascent = depth = char_O_deco_depth[31-i]; |
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2244 if( i < 31 ) |
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2245 ascent -= char_O_deco_depth[30-i]; |
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2246 } |
|
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2247 |
|
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2248 // Gas switch depth ? |
| 241 | 2249 for(j=0; j<5; ++j) |
|
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2250 { |
|
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2251 if( depth <= char_I_deco_gas_change[j] ) |
| 241 | 2252 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 224 | 2253 gas = j; |
|
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2254 } |
|
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2255 |
|
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|
2256 // usage during stop: |
| 224 | 2257 // Note: because first gas is not in there, increment gas+1 |
|
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2258 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. |
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2259 * time // in minutes. |
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2260 * ascent_usage // in xxx / min @ 1bar. |
|
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2261 // Plus usage during ascent to the next stop, at 10m/min. |
|
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2262 + (depth*0.1 + 1.0) |
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2263 * ascent*0.1 // meter --> min |
| 225 | 2264 * ascent_usage; |
|
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2265 } |
|
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2266 |
|
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2267 //---- convert results for the ASM interface ----------------------------- |
|
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2268 for(i=0; i<5; ++i) |
| 224 | 2269 if( volumes[i] > 6553.4 ) |
| 2270 int_O_gas_volumes[i] = 65535; | |
|
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2271 else |
| 224 | 2272 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
| 116 | 2273 } |
| 2274 | |
| 167 | 2275 ////////////////////////////////////////////////////////////////////////////// |
| 2276 | |
| 116 | 2277 void deco_push_tissues_to_vault(void) |
| 2278 { | |
| 167 | 2279 overlay unsigned char x; |
|
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2280 RESET_C_STACK |
| 167 | 2281 |
| 116 | 2282 cns_vault = CNS_fraction; |
| 167 | 2283 for (x=0;x<32;x++) |
| 2284 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2285 } |
| 167 | 2286 |
| 116 | 2287 void deco_pull_tissues_from_vault(void) |
| 2288 { | |
| 167 | 2289 overlay unsigned char x; |
|
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
JeanDo
parents:
116
diff
changeset
|
2290 RESET_C_STACK |
| 167 | 2291 |
| 116 | 2292 CNS_fraction = cns_vault; |
| 167 | 2293 for (x=0;x<32;x++) |
| 2294 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2295 } |
| 2296 | |
| 167 | 2297 ////////////////////////////////////////////////////////////////////////////// |
| 2298 // | |
| 184 | 2299 #ifndef CROSS_COMPILE |
| 2300 void main() {} | |
| 2301 #endif |