Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 240:d995e220ddac
BUGFIX Gas Usage when first gas is not #1 (bug BB22).
| author | JeanDo |
|---|---|
| date | Mon, 21 Mar 2011 23:27:46 +0100 |
| parents | 55178aa1f972 |
| children | f44274d8440a |
| rev | line source |
|---|---|
| 116 | 1 // ************************************************************** |
| 2 // p2_deco.c | |
| 3 // | |
| 4 // Created on: 12.05.2009 | |
| 5 // Author: chsw | |
| 6 // | |
| 7 // ************************************************************** | |
| 8 | |
| 9 ////////////////////////////////////////////////////////////////////////////// | |
| 10 // OSTC - diving computer code | |
| 11 // Copyright (C) 2008 HeinrichsWeikamp GbR | |
| 12 // | |
| 13 // This program is free software: you can redistribute it and/or modify | |
| 14 // it under the terms of the GNU General Public License as published by | |
| 15 // the Free Software Foundation, either version 3 of the License, or | |
| 16 // (at your option) any later version. | |
| 17 // | |
| 18 // This program is distributed in the hope that it will be useful, | |
| 19 // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 21 // GNU General Public License for more details. | |
| 22 // | |
| 23 // You should have received a copy of the GNU General Public License | |
| 24 // along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 25 // | |
| 26 ////////////////////////////////////////////////////////////////////////////// | |
| 27 | |
| 28 // ***************************** | |
| 29 // ** I N T R O D U C T I O N ** | |
| 30 // ***************************** | |
| 31 // | |
| 32 // OSTC | |
| 33 // | |
| 34 // code: | |
| 35 // p2_deco_main_c_v101.c | |
| 36 // part2 of the OSTC code | |
| 37 // code with constant O2 partial pressure routines | |
| 38 // under construction !! | |
| 39 // | |
| 40 // summary: | |
| 41 // decompression routines | |
| 42 // for the OSTC experimental project | |
| 43 // written by Christian Weikamp | |
| 44 // last revision __________ | |
| 45 // comments added _________ | |
| 46 // | |
| 47 // additional files: | |
| 48 // p2_tables_v100.romdata (other files) | |
| 49 // 18f4685_ostc_v100.lkr (linker script) | |
| 50 // | |
| 51 // history: | |
| 52 // 01/03/08 v100: first release candidate | |
| 53 // 03/13/08 v101: start of programming ppO2 code | |
| 54 // 03/13/25 v101a: backup of interrim version with ppO2 calculation | |
| 55 // 03/13/25 v101: open circuit gas change during deco | |
| 56 // 03/13/25 v101: CNS_fraction calculation | |
| 57 // 03/13/26 v101: optimization of tissue calc routines | |
| 58 // 07/xx/08 v102a: debug of bottom time routine | |
| 59 // 09/xx/08 v102d: Gradient Factor Model implemenation | |
| 60 // 10/10/08 v104: renamed to build v103 for v118 stable | |
| 171 | 61 // 10/14/08 v104: integration of char_I_depth_last_deco for Gradient Model |
| 116 | 62 // 03/31/09 v107: integration of FONT Incon24 |
| 63 // 05/23/10 v109: 5 gas changes & 1 min timer | |
| 64 // 07/13/10 v110: cns vault added | |
| 65 // 12/25/10 v110: split in three files (deco.c, main.c, definitions.h) | |
| 163 | 66 // 2011/01/20: [jDG] Create a common file included in ASM and C code. |
| 167 | 67 // 2011/01/23: [jDG] Added read_custom_function(). |
| 203 | 68 // 2011/01/24: [jDG] Make ascenttime an short. No more overflow! |
|
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69 // 2011/01/25: [jDG] Fusion deco array for both models. |
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70 // 2011/01/25: [jDG] Use CF(54) to reverse deco order. |
| 193 | 71 // 2011/02/11: [jDG] Reworked gradient-factor implementation. |
| 197 | 72 // 2011/02/13: [jDG] CF55 for additional gas switch delay in decoplan. |
| 217 | 73 // 2011/02/24: [jDG] Fixed inconsistencies introduced by gas switch delays. |
| 116 | 74 // |
| 167 | 75 // TODO: |
| 76 // + Allow to abort MD2 calculation (have to restart next time). | |
| 77 // | |
| 78 // Literature: | |
| 200 | 79 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 80 // Schr"oder, Kai & Reith, Steffen; 2000; S"attigungsvorg"ange beim Tauchen, das Modell ZH-L16, Funktionsweise von Tauchcomputern; http://www.achim-und-kai.de/kai/tausim/saett_faq |
| 81 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 82 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 83 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 84 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 85 // |
| 86 // | |
| 116 | 87 |
| 88 // ********************* | |
| 89 // ** I N C L U D E S ** | |
| 90 // ********************* | |
| 91 #include <math.h> | |
| 167 | 92 |
| 192 | 93 // *********************************************** |
| 94 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 95 // *********************************************** | |
| 96 | |
| 97 #include "p2_definitions.h" | |
| 98 #include "shared_definitions.h" | |
| 99 | |
| 200 | 100 // Water vapour partial pressure in the lumb. |
| 233 | 101 #define ppWVapour 0.0627 |
| 200 | 102 |
| 167 | 103 // ************************* |
| 104 // ** P R O T O T Y P E S ** | |
| 105 // ************************* | |
| 106 | |
| 107 static void calc_hauptroutine(void); | |
| 108 static void calc_nullzeit(void); | |
| 109 | |
| 192 | 110 static void calc_tissue(PARAMETER unsigned char period); |
| 111 static void calc_limit(PARAMETER float GF_current); | |
| 112 | |
| 167 | 113 static void clear_tissue(void); |
| 114 static void calc_ascenttime(void); | |
| 115 static void update_startvalues(void); | |
|
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116 static void clear_deco_table(void); |
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117 static void update_deco_table(void); |
| 192 | 118 |
| 119 static void backup_sim_pres_tissue(void); | |
| 120 static void restore_sim_pres_tissue(void); | |
| 121 static void sim_tissue(PARAMETER unsigned char period); | |
| 122 static void sim_limit(PARAMETER float GF_current); | |
| 167 | 123 static void calc_gradient_factor(void); |
| 124 static void calc_wo_deco_step_1_min(void); | |
| 125 | |
| 126 static void calc_hauptroutine_data_input(void); | |
| 127 static void calc_hauptroutine_update_tissues(void); | |
| 128 static void calc_hauptroutine_calc_deco(void); | |
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129 static void sim_ascent_to_first_stop(void); |
| 167 | 130 |
| 217 | 131 static void deepest_gas_switch(void); |
| 132 static void best_gas_switch(void); | |
| 133 static void set_gas(void); | |
| 134 | |
| 171 | 135 static void calc_nextdecodepth(void); |
| 116 | 136 |
| 200 | 137 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 138 #pragma udata bank4=0x400 |
| 116 | 139 |
| 140 static float temp_limit; | |
| 141 static float GF_low; | |
| 142 static float GF_high; | |
| 143 static float GF_delta; | |
| 192 | 144 static unsigned char low_depth; // Depth of deepest stop |
| 145 static float locked_GF_step; // GF_delta / low_depth | |
| 146 | |
| 147 static unsigned char temp_depth_limit; | |
| 171 | 148 |
| 192 | 149 // Simulation context: used to predict ascent. |
| 150 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 151 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 152 |
| 192 | 153 // Real context: what we are doing now. |
| 154 static float calc_lead_tissue_limit; // | |
| 116 | 155 |
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156 static unsigned char internal_deco_time[32]; |
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157 static unsigned char internal_deco_depth[32]; |
| 116 | 158 |
| 159 static float cns_vault; | |
| 160 static float pres_tissue_vault[32]; | |
| 161 | |
| 163 | 162 //---- Bank 5 parameters ----------------------------------------------------- |
| 163 #pragma udata bank5=0x500 | |
| 164 | |
| 167 | 165 static unsigned char ci; |
| 116 | 166 static float pres_respiration; |
| 167 static float pres_surface; | |
| 168 static float temp_deco; | |
| 236 | 169 static float ppN2; |
| 200 | 170 static float ppHe; |
| 116 | 171 static float temp_tissue; |
| 200 | 172 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 173 static float He_ratio; // Breathed gas helium ratio. | |
| 174 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 175 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 176 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 177 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 178 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 179 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 180 |
| 164 | 181 static float pres_diluent; // new in v.101 |
| 182 static float const_ppO2; // new in v.101 | |
| 183 static float deco_ppO2_change; // new in v.101 | |
| 184 static float deco_ppO2; // new in v.101 | |
| 116 | 185 |
| 200 | 186 static unsigned char sim_gas_last_used; // Last used gas, to detected a gas switch. |
| 203 | 187 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 188 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 189 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 190 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 191 static float CNS_fraction; // new in v.101 | |
| 192 static float float_saturation_multiplier; // new in v.101 | |
| 193 static float float_desaturation_multiplier; // new in v.101 | |
| 167 | 194 static float float_deco_distance; // new in v.101 |
| 195 static char flag_in_divemode; // new in v.108 | |
| 196 | |
| 225 | 197 static unsigned char deco_gas_change[5]; // new in v.109 |
| 167 | 198 |
| 163 | 199 //---- Bank 6 parameters ----------------------------------------------------- |
| 200 #pragma udata bank6=0x600 | |
| 116 | 201 |
| 197 | 202 float pres_tissue[32]; |
| 203 float pres_tissue_limit[16]; | |
| 204 float sim_pres_tissue_limit[16]; | |
| 116 | 205 |
| 163 | 206 //---- Bank 7 parameters ----------------------------------------------------- |
| 207 #pragma udata bank7=0x700 | |
| 208 | |
| 197 | 209 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
| 116 | 210 static float sim_pres_tissue_backup[32]; |
| 211 | |
| 163 | 212 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 213 #pragma udata bank8=0x800 |
| 163 | 214 |
| 116 | 215 static char md_pi_subst[256]; |
|
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216 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 217 |
| 163 | 218 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 219 #pragma udata bank9=0x900 |
| 116 | 220 |
| 163 | 221 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 222 |
| 164 | 223 // internal, dbg: |
| 167 | 224 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 225 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 226 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 224 | 227 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
| 228 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
| 164 | 229 static float DBG_pres_surface; // new in v.108 |
| 230 static float DBG_GF_low; // new in v.108 | |
| 231 static float DBG_GF_high; // new in v.108 | |
| 232 static float DBG_const_ppO2; // new in v.108 | |
| 233 static float DBG_deco_ppO2_change; // new in v.108 | |
| 234 static float DBG_deco_ppO2; // new in v.108 | |
| 235 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 236 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 237 static float DBG_float_deco_distance; // new in v.108 | |
| 238 static float DBG_N2_ratio; // new in v.108 | |
| 239 static float DBG_He_ratio; // new in v.108 | |
| 240 | |
| 167 | 241 ////////////////////////////////////////////////////////////////////////////// |
| 242 ////////////////////////////////////////////////////////////////////////////// | |
| 243 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 244 ////////////////////////////////////////////////////////////////////////////// | |
| 245 ////////////////////////////////////////////////////////////////////////////// | |
| 246 // | |
| 247 // End of PROM code is 17F00, So push tables on PROM top... | |
| 248 // | |
| 249 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 250 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 251 |
| 167 | 252 // Magic table to compute the MD2 HASH |
| 253 // | |
| 254 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 255 rom const rom unsigned short md_pi[] = |
| 116 | 256 { |
| 257 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 258 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 259 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 260 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 261 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 262 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 263 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 264 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 265 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 266 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 267 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 268 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 269 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 270 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 271 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 272 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 273 }; | |
| 274 | |
| 167 | 275 ////////////////////////////////////////////////////////////////////////////// |
| 276 ////////////////////////////////////////////////////////////////////////////// | |
| 277 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 278 ////////////////////////////////////////////////////////////////////////////// | |
| 279 ////////////////////////////////////////////////////////////////////////////// | |
| 280 // | |
| 116 | 281 // all new in v.102 |
| 282 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 283 | |
| 284 #pragma code p2_deco = 0x0C000 | |
| 285 | |
| 167 | 286 ////////////////////////////////////////////////////////////////////////////// |
| 287 // DBS - debug on start of dive | |
| 288 // | |
| 289 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 290 { |
| 167 | 291 overlay char i; // Local loop index. |
| 292 | |
| 293 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 294 int_O_DBS_bitfield = 0; |
| 295 int_O_DBS2_bitfield = 0; | |
| 296 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 297 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 298 else | |
| 299 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 300 int_O_DBG_post_bitfield = 0; | |
| 167 | 301 |
| 302 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 303 char_O_NDL_at_20mtr = 255; |
| 304 | |
| 167 | 305 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 306 DBG_N2_ratio = N2_ratio; |
| 307 DBG_He_ratio = He_ratio; | |
| 308 DBG_char_I_deco_model = char_I_deco_model; | |
| 309 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 310 DBG_pres_surface = pres_surface; | |
| 311 DBG_GF_low = GF_low; | |
| 312 DBG_GF_high = GF_high; | |
| 313 DBG_const_ppO2 = const_ppO2; | |
| 314 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 315 DBG_deco_ppO2 = deco_ppO2; | |
| 224 | 316 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 317 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 318 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 319 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 320 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 321 DBG_float_deco_distance = float_deco_distance; | |
| 322 | |
| 167 | 323 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 324 if(char_I_deco_model) |
| 325 int_O_DBS_bitfield |= DBS_mode; | |
| 326 if(const_ppO2) | |
| 327 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 328 for(i = 16; i < 32; i++) |
| 329 if(pres_tissue[i]) | |
| 116 | 330 int_O_DBS_bitfield |= DBS_HE_sat; |
| 331 if(deco_ppO2_change) | |
| 332 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 333 if(float_saturation_multiplier < 0.99) | |
| 334 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 335 if(float_saturation_multiplier > 1.3) | |
| 336 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 337 if(GF_low < 0.19) | |
| 338 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 339 if(GF_low > 1.01) | |
| 340 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 341 if(GF_high < 0.6) | |
| 342 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 343 if(GF_high > 1.01) | |
| 344 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 345 if((N2_ratio + He_ratio) > 0.95) | |
| 346 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 347 if((N2_ratio + He_ratio) < 0.05) | |
| 348 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 349 if(float_deco_distance > 0.25) | |
| 350 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 351 if(char_I_depth_last_deco > 8) | |
| 352 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 353 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 354 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 355 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 356 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 357 if(pres_respiration > 3.0) | |
| 358 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 359 if(pres_surface - pres_respiration > 0.2) | |
| 360 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 361 if(pres_surface < 0.75) | |
| 362 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 363 if(pres_surface > 1.11) | |
| 364 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 365 if(float_desaturation_multiplier < 0.70) | |
| 366 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 367 if(float_desaturation_multiplier > 1.01) | |
| 368 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 369 if(GF_low > GF_high) | |
| 370 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 371 } | |
| 372 | |
| 167 | 373 ////////////////////////////////////////////////////////////////////////////// |
| 374 // DBG - set DBG to end_of_dive | |
| 375 // | |
| 376 static void set_dbg_end_of_dive(void) | |
| 116 | 377 { |
| 378 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 379 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 380 } | |
| 381 | |
| 167 | 382 ////////////////////////////////////////////////////////////////////////////// |
| 383 // DBG - NDL at first 20 m. hit | |
| 384 // | |
| 385 static void check_ndl(void) | |
| 116 | 386 { |
| 167 | 387 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 388 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 389 ) | |
| 116 | 390 { |
| 167 | 391 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 392 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 393 char_O_NDL_at_20mtr = 254; |
| 116 | 394 } |
| 395 } | |
| 396 | |
| 167 | 397 ////////////////////////////////////////////////////////////////////////////// |
| 398 // DBG - multi main during dive | |
| 399 // | |
| 184 | 400 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 401 { |
| 203 | 402 overlay unsigned short temp_DBS = 0; |
| 200 | 403 overlay unsigned char i; // Local loop index. |
| 167 | 404 |
| 116 | 405 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 406 temp_DBS |= DBG_c_gas; | |
| 407 if(DBG_const_ppO2 != const_ppO2) | |
| 408 temp_DBS |= DBG_c_ppO2; | |
| 167 | 409 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 410 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 411 ) | |
| 116 | 412 temp_DBS |= DBG_CdeSAT; |
| 413 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 414 temp_DBS |= DBG_C_MODE; | |
| 415 if(DBG_pres_surface != pres_surface) | |
| 416 temp_DBS |= DBG_C_SURF; | |
| 167 | 417 |
| 418 if( !DBS_HE_sat && !He_ratio) | |
| 419 for(i = 16; i < 32; i++) | |
| 420 if(pres_tissue[i]) | |
| 116 | 421 temp_DBS |= DBG_HEwoHE; |
| 167 | 422 |
| 116 | 423 if(DBG_deco_ppO2 != deco_ppO2) |
| 424 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 425 |
| 225 | 426 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 427 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 428 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 429 temp_DBS |= DBG_C_DGAS; |
| 167 | 430 |
| 116 | 431 if(DBG_float_deco_distance != float_deco_distance) |
| 432 temp_DBS |= DBG_C_DIST; | |
| 433 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 434 temp_DBS |= DBG_C_LAST; | |
| 167 | 435 if( DBG_GF_low != GF_low |
| 436 || DBG_GF_high != GF_high ) | |
| 116 | 437 temp_DBS |= DBG_C_GF; |
| 438 if(pres_respiration > 13.0) | |
| 439 temp_DBS |= DBG_PHIGH; | |
| 440 if(pres_surface - pres_respiration > 0.2) | |
| 441 temp_DBS |= DBG_PLOW; | |
| 442 if(is_post_check) | |
| 443 int_O_DBG_post_bitfield |= temp_DBS; | |
| 444 else | |
| 445 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 446 } | |
| 447 | |
| 167 | 448 ////////////////////////////////////////////////////////////////////////////// |
| 449 // DBG - prior to calc. of dive | |
| 450 // | |
| 451 static void check_pre_dbg(void) | |
| 116 | 452 { |
| 453 check_dbg(0); | |
| 454 } | |
| 455 | |
| 167 | 456 ////////////////////////////////////////////////////////////////////////////// |
| 457 // DBG - after decocalc of dive | |
| 458 // | |
| 459 static void check_post_dbg(void) | |
| 116 | 460 { |
| 461 check_dbg(1); | |
| 462 } | |
| 463 | |
| 165 | 464 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 465 ////////////////////////////////////////////////////////////////////////////// |
| 466 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 467 ////////////////////////////////////////////////////////////////////////////// | |
| 468 ////////////////////////////////////////////////////////////////////////////// | |
| 469 | |
| 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 // | |
| 116 | 637 // OUTPUT |
| 171 | 638 // locked_GF_step |
| 167 | 639 // temp_depth_limt |
| 192 | 640 // low_depth |
| 167 | 641 // |
| 171 | 642 static void calc_nextdecodepth(void) |
| 167 | 643 { |
| 212 | 644 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 645 if (char_I_deco_model == 1) |
| 646 { | |
| 192 | 647 // Recompute leading gas limit, at current depth: |
| 648 overlay float depth = (temp_deco - pres_surface) / 0.09995; | |
| 237 | 649 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. |
| 203 | 650 assert( low_depth < 255 ); |
| 167 | 651 |
| 192 | 652 if( depth > low_depth ) |
| 653 sim_limit( GF_low ); | |
| 654 else | |
| 655 sim_limit( GF_high - depth * locked_GF_step ); | |
| 656 | |
| 657 // Stops are needed ? | |
| 658 if( sim_lead_tissue_limit > pres_surface ) | |
| 659 { | |
| 660 // Deepest stop, in meter. | |
| 203 | 661 overlay unsigned char first_stop = 3 * (short)(0.99 + (sim_lead_tissue_limit - pres_surface) / 0.29985); |
| 192 | 662 assert( first_stop < 128 ); |
| 171 | 663 |
| 212 | 664 // Apply correction for the shallowest stop. |
| 192 | 665 if( first_stop == 3 ) // new in v104 |
| 666 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 667 |
| 192 | 668 // Check all stops until one is higher than tolerated presure |
| 669 while(first_stop > 0) | |
| 670 { | |
| 671 overlay unsigned char next_stop; // Next index (0..30) | |
| 672 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 673 |
| 192 | 674 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 675 next_stop = 0; | |
| 216 | 676 else if( first_stop == 6 ) |
| 677 next_stop = char_I_depth_last_deco; | |
| 192 | 678 else |
| 679 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 680 |
| 192 | 681 pres_stop = next_stop * 0.09995 // Meters to bar |
| 682 + pres_surface; | |
| 683 | |
| 212 | 684 // Keep GF_low until a first stop depth is found: |
| 685 if( next_stop >= low_depth ) | |
| 686 sim_limit( GF_low ); | |
| 687 else | |
| 688 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 689 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 690 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 691 |
| 192 | 692 // upper limit (lowest pressure tolerated): |
| 693 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 694 break; | |
| 695 | |
| 696 // Else, validate that stop and loop... | |
| 697 first_stop = next_stop; | |
| 698 } | |
| 171 | 699 |
| 212 | 700 // Is it a new deepest first stop ? If yes this is the reference for |
| 701 // the varying gradient factor. So reset that: | |
| 702 if( first_stop > low_depth ) | |
| 703 { | |
| 704 // Store the deepest stop depth, as reference for GF_low. | |
| 705 low_depth = first_stop; | |
| 706 locked_GF_step = GF_delta / low_depth; | |
| 707 } | |
| 708 | |
| 709 // next stop is the last validated depth found, aka first_stop | |
| 192 | 710 temp_depth_limit = first_stop; // Stop depth, in meter. |
| 711 } | |
| 171 | 712 else |
| 192 | 713 temp_depth_limit = 0; // stop depth, in meter. |
| 116 | 714 } |
| 167 | 715 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 716 { |
| 192 | 717 overlay float pres_gradient; |
| 718 | |
| 719 // Original model | |
| 116 | 720 // optimized in v.101 |
| 171 | 721 // char_I_depth_last_deco included in v.101 |
| 116 | 722 |
| 192 | 723 // Compute sim_lead_tissue_limit too, but just once. |
| 724 sim_limit(1.0); | |
| 725 | |
| 726 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 727 if (pres_gradient >= 0) |
| 116 | 728 { |
| 192 | 729 pres_gradient /= 0.29985; // Bar --> stop number; |
| 203 | 730 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> meter : depth for deco |
| 212 | 731 if (temp_depth_limit != 0) // At surface ? |
| 116 | 732 { |
| 171 | 733 if (temp_depth_limit < char_I_depth_last_deco) // Implement last stop at 4m/5m/6m... |
| 734 temp_depth_limit = char_I_depth_last_deco; | |
| 735 } | |
| 736 } | |
| 116 | 737 else |
| 192 | 738 temp_depth_limit = 0; // stop depth, in meter. |
| 171 | 739 } |
| 212 | 740 |
| 217 | 741 //---- Check gas change -------------------------------------------------- |
| 742 best_gas_switch(); // Update temp_depth_limit if there is a change, | |
| 212 | 743 // Calculate N2_ratio and He_ratio too. |
| 167 | 744 } |
| 116 | 745 |
| 167 | 746 ////////////////////////////////////////////////////////////////////////////// |
|
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747 // copy_deco_table |
| 167 | 748 // |
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749 // Buffer the stops, once computed, so we can continue to display them |
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750 // while computing the next set. |
| 167 | 751 // |
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752 static void copy_deco_table(void) |
| 116 | 753 { |
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754 // Copy depth of the first (deepest) stop, because when reversing |
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755 // order, it will be hard to find... |
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756 char_O_first_deco_depth = internal_deco_depth[0]; |
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757 char_O_first_deco_time = internal_deco_time [0]; |
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758 |
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759 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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760 { |
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761 overlay unsigned char x, y; |
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762 |
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763 //---- First: search the first non-null depth |
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764 for(x=31; x != 0; --x) |
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765 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 766 |
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767 //---- Second: copy to output table (in reverse order) |
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768 for(y=0; y<32; y++, --x) |
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769 { |
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770 char_O_deco_depth[y] = internal_deco_depth[x]; |
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771 char_O_deco_time [y] = internal_deco_time [x]; |
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772 |
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773 // Stop only once the last transfer is done. |
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774 if( x == 0 ) break; |
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775 } |
| 116 | 776 |
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777 //---- Third: fill table end with null |
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778 for(y++; y<32; y++) |
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779 { |
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780 char_O_deco_time [y] = 0; |
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781 char_O_deco_depth[y] = 0; |
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782 } |
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783 } |
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784 else //---- Straight copy ------------------------------------------------ |
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785 { |
| 167 | 786 overlay unsigned char x; |
| 787 | |
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788 for(x=0; x<32; x++) |
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789 { |
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790 char_O_deco_depth[x] = internal_deco_depth[x]; |
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791 char_O_deco_time [x] = internal_deco_time [x]; |
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792 } |
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793 } |
| 167 | 794 } |
| 116 | 795 |
| 167 | 796 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 797 // temp_tissue_safety // |
| 167 | 798 // |
| 116 | 799 // outsourced in v.102 |
| 167 | 800 // |
| 801 // Apply safety factors for brand ZH-L16 model. | |
| 802 // | |
| 803 static void temp_tissue_safety(void) | |
| 116 | 804 { |
| 197 | 805 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 806 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 807 | |
| 167 | 808 if( char_I_deco_model == 0 ) |
| 116 | 809 { |
| 810 if (temp_tissue < 0.0) | |
| 126 | 811 temp_tissue *= float_desaturation_multiplier; |
| 116 | 812 else |
| 126 | 813 temp_tissue *= float_saturation_multiplier; |
| 116 | 814 } |
| 167 | 815 } |
| 116 | 816 |
| 167 | 817 ////////////////////////////////////////////////////////////////////////////// |
| 818 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 819 // ** THE JUMP-IN CODE ** |
| 820 // ** for the asm code ** | |
| 167 | 821 ////////////////////////////////////////////////////////////////////////////// |
| 822 ////////////////////////////////////////////////////////////////////////////// | |
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823 |
| 167 | 824 ////////////////////////////////////////////////////////////////////////////// |
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825 // Called every 2 seconds during diving. |
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826 // update tissues every time. |
| 184 | 827 // |
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828 // Every 6 seconds (or slower when TTS > 16): |
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829 // - update deco table (char_O_deco_time/depth) with new values. |
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830 // - update ascent time, |
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831 // - set status to zero (so we can check there is new results). |
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832 // |
| 116 | 833 void deco_calc_hauptroutine(void) |
| 834 { | |
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835 RESET_C_STACK |
| 116 | 836 calc_hauptroutine(); |
| 837 int_O_desaturation_time = 65535; | |
| 838 } | |
| 839 | |
| 167 | 840 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 841 // Reset decompression model: |
| 842 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 843 // + Reset last stop to 0m | |
| 844 // + Reset all model output. | |
| 116 | 845 void deco_clear_tissue(void) |
| 846 { | |
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847 RESET_C_STACK |
| 116 | 848 clear_tissue(); |
| 849 } | |
| 850 | |
| 167 | 851 ////////////////////////////////////////////////////////////////////////////// |
| 852 | |
| 116 | 853 void deco_calc_wo_deco_step_1_min(void) |
| 854 { | |
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855 RESET_C_STACK |
| 116 | 856 calc_wo_deco_step_1_min(); |
| 857 deco_calc_desaturation_time(); | |
| 858 } | |
| 859 | |
| 167 | 860 ////////////////////////////////////////////////////////////////////////////// |
| 861 | |
| 116 | 862 void deco_debug(void) |
| 863 { | |
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864 RESET_C_STACK |
| 116 | 865 } |
| 866 | |
| 167 | 867 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 868 // Find deepest available gas. |
| 201 | 869 // |
| 225 | 870 // Input: deco_gas_change[] |
| 212 | 871 // sim_gas_delay, sim_gas_last_used, sim_dive_mins. |
| 872 // | |
| 217 | 873 // Output: temp_depth_limit, sim_gas_delay, sim_gas_last_used IFF the is a switch. |
| 212 | 874 // |
| 217 | 875 static void deepest_gas_switch(void) |
| 201 | 876 { |
| 203 | 877 overlay unsigned char temp_gas_switch = 0; |
| 212 | 878 overlay unsigned char switch_deco = 0; |
| 201 | 879 |
| 880 if (char_I_const_ppO2 == 0) | |
| 881 { | |
| 225 | 882 overlay unsigned char j; |
| 883 | |
| 884 // Loop over all enabled gas, to find the deepest enabled one above us. | |
| 885 for(temp_gas_switch=j=0; j<5; ++j) | |
| 886 { | |
| 887 if( temp_depth_limit <= deco_gas_change[j] ) | |
| 888 if( (temp_gas_switch == 0) || (switch_deco < deco_gas_change[j]) ) | |
| 889 { | |
| 890 temp_gas_switch = j+1; | |
| 891 switch_deco = deco_gas_change[j]; | |
| 892 } | |
| 893 } | |
| 201 | 894 } |
| 895 | |
| 203 | 896 // If there is a better gas available |
| 897 if( temp_gas_switch ) | |
| 201 | 898 { |
| 212 | 899 // Should restart gas-switch delay only when gas do changes... |
| 203 | 900 // sim_gas_last_used: used to detect just once in each ascent simu. |
| 901 // N2_ratio : used to detect when already breathing that gas. | |
| 217 | 902 if( temp_depth_limit != switch_deco |
| 226 | 903 && sim_gas_last_used != temp_gas_switch |
| 217 | 904 && sim_gas_delay <= sim_dive_mins ) |
| 203 | 905 { |
| 906 sim_gas_last_used = temp_gas_switch; | |
| 907 sim_gas_delay = read_custom_function(55); | |
| 201 | 908 |
| 203 | 909 // Apply depth correction ONLY if CF#55 is not null: |
| 910 if( sim_gas_delay > 0 ) | |
| 911 { | |
| 912 sim_gas_delay += sim_dive_mins; | |
| 212 | 913 temp_depth_limit = switch_deco; |
| 203 | 914 } |
| 201 | 915 } |
| 916 } | |
| 203 | 917 else |
| 918 sim_gas_delay = 0; | |
| 217 | 919 } |
| 920 | |
| 921 ////////////////////////////////////////////////////////////////////////////// | |
| 922 // Find best (shallowest) available gas. | |
| 923 // | |
| 924 // Input: deco_gas_change* | |
| 925 // sim_gas_delay, sim_gas_last_used, sim_dive_mins. | |
| 926 // | |
| 927 // Output: temp_depth_limit, sim_gas_delay, sim_gas_last_used IFF the is a switch. | |
| 928 // | |
| 929 static void best_gas_switch(void) | |
| 930 { | |
| 931 overlay unsigned char temp_gas_switch = 0; | |
| 932 overlay unsigned char switch_deco = 0; | |
| 933 | |
| 934 if (char_I_const_ppO2 == 0) | |
| 935 { | |
| 225 | 936 overlay unsigned char j; |
| 937 | |
| 938 // Loop over all enabled gas, to find the shallowest enabled one above us. | |
| 939 for(temp_gas_switch=j=0; j<5; ++j) | |
| 940 { | |
| 941 if( temp_depth_limit <= deco_gas_change[j] ) | |
| 942 if( (temp_gas_switch == 0) || (switch_deco > deco_gas_change[j]) ) | |
| 943 { | |
| 944 temp_gas_switch = j+1; | |
| 945 switch_deco = deco_gas_change[j]; | |
| 946 } | |
| 947 } | |
| 217 | 948 } |
| 949 | |
| 950 // If there is a better gas available | |
| 951 if( temp_gas_switch ) | |
| 952 { | |
| 953 // Should restart gas-switch delay only when gas do changes... | |
| 954 // sim_gas_last_used: used to detect just once in each ascent simu. | |
| 955 // N2_ratio : used to detect when already breathing that gas. | |
| 226 | 956 if( sim_gas_last_used != temp_gas_switch |
| 217 | 957 && sim_gas_delay <= sim_dive_mins ) |
| 958 { | |
| 959 sim_gas_last_used = temp_gas_switch; | |
| 960 sim_gas_delay = read_custom_function(55); | |
| 961 | |
| 962 // Apply depth correction ONLY if CF#55 is not null: | |
| 963 if( sim_gas_delay > 0 ) | |
| 964 { | |
| 965 sim_gas_delay += sim_dive_mins; | |
| 966 temp_depth_limit = switch_deco; | |
| 967 } | |
| 968 } | |
| 969 } | |
| 970 else | |
| 971 sim_gas_delay = 0; | |
| 972 } | |
| 973 | |
| 974 ////////////////////////////////////////////////////////////////////////////// | |
| 975 // Calculate gas switches | |
| 976 // | |
| 977 // | |
| 978 // Input: N2_ratio, He_ratio. | |
| 979 // sim_gas_last_used | |
| 980 // | |
| 981 // Output: calc_N2_ratio, calc_He_ratio | |
| 982 // | |
| 983 static void set_gas(void) | |
| 984 { | |
| 224 | 985 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
| 217 | 986 |
| 224 | 987 if( sim_gas_last_used == 0 ) |
| 988 { | |
| 989 calc_N2_ratio = N2_ratio; | |
| 990 calc_He_ratio = He_ratio; | |
| 991 } | |
| 992 else | |
| 993 { | |
| 994 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 995 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 996 } |
| 201 | 997 |
| 998 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 999 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1000 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1001 } | |
| 1002 | |
| 1003 ////////////////////////////////////////////////////////////////////////////// | |
| 1004 // | |
| 212 | 1005 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 1006 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 1007 // Water-vapor pressure inside lumbs (ppWVapour). | |
| 1008 // | |
| 236 | 1009 // Output: ppN2, ppHe. |
| 212 | 1010 // |
| 1011 static void sim_alveolar_presures(void) | |
| 201 | 1012 { |
| 212 | 1013 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1014 | |
| 1015 //---- CCR mode : deco gas switch ? -------------------------------------- | |
| 201 | 1016 if (char_I_const_ppO2 != 0) |
| 1017 { | |
| 212 | 1018 // In CCR mode, calc_XX_ratio == XX_ratio. |
| 1019 if( temp_deco > deco_ppO2_change ) | |
| 1020 deco_diluent = ((temp_deco - const_ppO2)/(calc_N2_ratio + calc_He_ratio)); | |
| 201 | 1021 else |
| 212 | 1022 deco_diluent = ((temp_deco - deco_ppO2)/(calc_N2_ratio + calc_He_ratio)); |
| 1023 | |
| 1024 if (deco_diluent > temp_deco) | |
| 1025 deco_diluent = temp_deco; | |
| 201 | 1026 } |
| 1027 | |
| 212 | 1028 // Take deco offset into account, but not at surface. |
| 1029 if( deco_diluent > pres_surface ) | |
| 1030 deco_diluent += float_deco_distance; | |
| 1031 | |
| 1032 if( deco_diluent > ppWVapour ) | |
| 201 | 1033 { |
| 236 | 1034 ppN2 = calc_N2_ratio * (deco_diluent - ppWVapour); |
| 201 | 1035 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); |
| 1036 } | |
| 1037 else | |
| 1038 { | |
| 236 | 1039 ppN2 = 0.0; |
| 201 | 1040 ppHe = 0.0; |
| 1041 } | |
| 236 | 1042 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 1043 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 1044 } | |
| 1045 | |
| 1046 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1047 // clear_tissue |
| 1048 // | |
| 165 | 1049 // optimized in v.101 (var_N2_a) |
| 167 | 1050 // |
| 1051 // preload tissues with standard pressure for the given ambient pressure. | |
| 1052 // Note: fixed N2_ratio for standard air. | |
| 201 | 1053 // |
| 167 | 1054 static void clear_tissue(void) |
| 116 | 1055 { |
| 1056 flag_in_divemode = 0; | |
| 1057 int_O_DBS_bitfield = 0; | |
| 1058 int_O_DBS2_bitfield = 0; | |
| 1059 int_O_DBG_pre_bitfield = 0; | |
| 1060 int_O_DBG_post_bitfield = 0; | |
| 1061 char_O_NDL_at_20mtr = 255; | |
| 1062 | |
| 167 | 1063 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1064 N2_ratio = 0.7902; | |
| 212 | 1065 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1066 |
| 167 | 1067 for(ci=0; ci<16; ci++) |
| 126 | 1068 { |
| 197 | 1069 // cycle through the 16 Bühlmann tissues |
| 200 | 1070 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
| 164 | 1071 pres_tissue[ci] = p; |
| 197 | 1072 |
| 184 | 1073 read_buhlmann_coefficients(-1); |
| 165 | 1074 |
| 1075 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 1076 if( p < 0.0 ) |
| 1077 p = 0.0; | |
| 1078 pres_tissue_limit[ci] = p; | |
| 1079 | |
| 197 | 1080 // cycle through the 16 Bühlmann tissues for Helium |
| 167 | 1081 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1082 } // for 0 to 16 |
| 116 | 1083 |
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1084 clear_deco_table(); |
| 126 | 1085 char_O_deco_status = 0; |
| 1086 char_O_nullzeit = 0; | |
| 168 | 1087 int_O_ascenttime = 0; |
| 126 | 1088 char_O_gradient_factor = 0; |
| 1089 char_O_relative_gradient_GF = 0; | |
| 197 | 1090 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 1091 } |
| 116 | 1092 |
| 167 | 1093 ////////////////////////////////////////////////////////////////////////////// |
| 1094 // calc_hauptroutine | |
| 1095 // | |
| 1096 // this is the major code in dive mode calculates: | |
| 116 | 1097 // the tissues, |
| 167 | 1098 // the bottom time, |
| 1099 // and simulates the ascend with all deco stops. | |
| 171 | 1100 // |
| 1101 // The deco_state sequence is : | |
| 1102 // 3 (at surface) | |
| 1103 // +---> 0 : calc nullzeit | |
| 1104 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1105 // | +-> 1 : simulate up to 16min of stops. | |
| 1106 // | +------< not finished | |
| 1107 // +--------< finish | |
| 1108 // | |
| 167 | 1109 static void calc_hauptroutine(void) |
| 116 | 1110 { |
| 217 | 1111 static unsigned char backup_gas_used = 0; |
| 1112 static unsigned char backup_gas_delay = 0; | |
| 186 | 1113 |
| 116 | 1114 calc_hauptroutine_data_input(); |
| 1115 | |
| 1116 if(!flag_in_divemode) | |
| 1117 { | |
| 1118 flag_in_divemode = 1; | |
| 1119 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1120 } | |
| 1121 else | |
| 1122 check_pre_dbg(); | |
| 1123 | |
| 1124 calc_hauptroutine_update_tissues(); | |
| 1125 calc_gradient_factor(); | |
| 1126 | |
| 167 | 1127 // toggle between calculation for nullzeit (bottom time), |
| 1128 // deco stops | |
| 1129 // and more deco stops (continue) | |
| 1130 switch( char_O_deco_status ) | |
| 116 | 1131 { |
| 186 | 1132 case 3: //---- At surface: start a new dive ------------------------------ |
| 1133 clear_deco_table(); | |
| 1134 copy_deco_table(); | |
| 200 | 1135 int_O_ascenttime = 0; // Reset DTR. |
| 1136 char_O_nullzeit = 0; // Reset bottom time. | |
| 1137 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 201 | 1138 |
| 217 | 1139 // Values that should be reset just once for the full real dive. |
| 1140 // This is used to record the lowest stop for the whole dive, | |
| 1141 // Including ACCROSS all simulated ascent. | |
| 1142 low_depth = 0; | |
| 1143 | |
| 1144 // Reset gas switch history. | |
| 1145 backup_gas_used = sim_gas_last_used = 0; | |
| 1146 backup_gas_delay = sim_gas_delay = 0; | |
| 203 | 1147 sim_dive_mins = 0; |
| 1148 break; | |
| 186 | 1149 |
| 167 | 1150 case 0: //---- bottom time ----------------------------------------------- |
| 1151 calc_nullzeit(); | |
| 1152 check_ndl(); | |
| 186 | 1153 char_O_deco_status = 2; // calc ascent next time. |
| 1154 break; | |
| 1155 | |
| 1156 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 203 | 1157 // Check proposed gas at begin of ascent simulation |
| 1158 sim_dive_mins = int_I_divemins; // and time. | |
| 212 | 1159 temp_depth_limit = (int)(0.95 + (pres_respiration - pres_surface) / 0.09985) ; // Starts from current real depth. |
| 217 | 1160 best_gas_switch(); |
| 1161 set_gas(); | |
| 203 | 1162 |
| 1163 backup_gas_used = sim_gas_last_used;// And save for later simu steps. | |
| 1164 backup_gas_delay = sim_gas_delay; | |
| 186 | 1165 |
| 1166 sim_ascent_to_first_stop(); | |
| 201 | 1167 |
| 1168 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
| 167 | 1169 break; |
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1170 |
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1171 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1172 calc_hauptroutine_calc_deco(); |
| 186 | 1173 |
| 1174 // If simulation is finished, restore the GF low reference, so that | |
| 1175 // next ascent simulation is done from the current depth: | |
| 217 | 1176 if( char_O_deco_status == 0 ) |
| 186 | 1177 { |
| 201 | 1178 sim_gas_last_used = backup_gas_used; |
| 203 | 1179 sim_gas_delay = backup_gas_delay; |
| 186 | 1180 } |
| 167 | 1181 break; |
| 116 | 1182 } |
| 167 | 1183 |
| 116 | 1184 check_post_dbg(); |
| 1185 } | |
| 1186 | |
| 167 | 1187 ////////////////////////////////////////////////////////////////////////////// |
| 1188 // calc_hauptroutine_data_input | |
| 1189 // | |
| 1190 // Reset all C-code dive parameters from their ASM-code values. | |
| 1191 // Detect gas change condition. | |
| 1192 // | |
| 116 | 1193 void calc_hauptroutine_data_input(void) |
| 1194 { | |
| 203 | 1195 overlay short int_temp; |
| 126 | 1196 |
| 197 | 1197 pres_respiration = int_I_pres_respiration * 0.001; |
| 1198 pres_surface = int_I_pres_surface * 0.001; | |
| 1199 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1200 He_ratio = char_I_He_ratio * 0.01; | |
| 1201 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1202 |
| 126 | 1203 // ____________________________________________________ |
| 1204 // | |
| 1205 // _____________ G A S _ C H A N G E S ________________ | |
| 1206 // ____________________________________________________ | |
| 1207 | |
| 212 | 1208 // Keep a margin of 150mbar = 1.50m |
| 1209 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1210 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1211 |
| 225 | 1212 deco_gas_change[0] = 0; |
| 1213 deco_gas_change[1] = 0; | |
| 1214 deco_gas_change[2] = 0; | |
| 1215 deco_gas_change[3] = 0; | |
| 1216 deco_gas_change[4] = 0; | |
| 116 | 1217 |
| 203 | 1218 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1219 if(char_I_deco_gas_change[0]) |
| 126 | 1220 { |
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1221 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1222 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1223 } |
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1224 if(char_I_deco_gas_change[1]) |
| 126 | 1225 { |
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1226 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1227 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1228 } |
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1229 if(char_I_deco_gas_change[2]) |
| 126 | 1230 { |
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1231 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1232 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1233 } |
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1234 if(char_I_deco_gas_change[3]) |
| 126 | 1235 { |
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1236 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1237 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1238 } |
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1239 if(char_I_deco_gas_change[4]) |
| 126 | 1240 { |
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1241 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1242 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1243 } |
| 116 | 1244 |
| 197 | 1245 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1246 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
| 1247 + pres_surface | |
| 1248 + float_deco_distance; | |
| 1249 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1250 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1251 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1252 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1253 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1254 GF_delta = GF_high - GF_low; |
| 116 | 1255 } |
| 1256 | |
| 167 | 1257 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1258 // |
| 1259 // | |
| 116 | 1260 void calc_hauptroutine_update_tissues(void) |
| 1261 { | |
| 197 | 1262 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1263 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1264 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1265 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1266 |
| 1267 if (char_I_const_ppO2 == 0) // new in v.101 | |
| 167 | 1268 pres_diluent = pres_respiration; // new in v.101 |
| 186 | 1269 else |
| 1270 { | |
| 167 | 1271 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
| 186 | 1272 if (pres_diluent > pres_respiration) // new in v.101 |
| 1273 pres_diluent = pres_respiration; // new in v.101 | |
| 1274 } | |
| 200 | 1275 if (pres_diluent > ppWVapour) // new in v.101 |
| 116 | 1276 { |
| 236 | 1277 ppN2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 200 | 1278 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 116 | 1279 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1280 } | |
| 167 | 1281 else // new in v.101 |
| 116 | 1282 { |
| 236 | 1283 ppN2 = 0.0; // new in v.101 |
| 200 | 1284 ppHe = 0.0; // new in v.101 |
| 116 | 1285 char_O_diluent = 0; |
| 1286 } | |
| 1287 | |
| 1288 if(!char_I_step_is_1min) | |
| 192 | 1289 calc_tissue(0); |
| 116 | 1290 else |
| 192 | 1291 calc_tissue(1); |
| 186 | 1292 |
| 192 | 1293 // Calc limit for surface, ie. GF_high. |
| 1294 calc_limit(GF_high); | |
| 186 | 1295 |
| 203 | 1296 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 1297 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 192 | 1298 |
| 1299 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1300 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1301 { |
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1302 char_O_nullzeit = 0; // deco necessary |
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1303 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1304 } |
| 171 | 1305 } |
| 1306 | |
| 116 | 1307 |
| 167 | 1308 ////////////////////////////////////////////////////////////////////////////// |
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1309 // Compute stops. |
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1310 // |
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1311 // Note: because this can be very long, break on 16 iterations, and set state |
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1312 // to 0 when finished, or to 1 when needing to continue. |
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1313 // |
| 116 | 1314 void calc_hauptroutine_calc_deco(void) |
| 1315 { | |
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1316 overlay unsigned char loop; |
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1317 |
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1318 for(loop = 0; loop < 16; ++loop) |
| 116 | 1319 { |
| 212 | 1320 overlay float new_presure; |
| 1321 overlay unsigned char backup_gas_last_used; | |
| 1322 | |
| 197 | 1323 // Do not ascent while doing a gas switch. |
| 203 | 1324 if( sim_gas_delay <= sim_dive_mins ) |
| 1325 { | |
| 212 | 1326 backup_gas_last_used = sim_gas_last_used; |
| 197 | 1327 calc_nextdecodepth(); |
| 116 | 1328 |
| 203 | 1329 //---- Finish computations once surface is reached --------------- |
| 1330 if( temp_depth_limit == 0 ) | |
| 1331 { | |
| 1332 copy_deco_table(); | |
| 1333 calc_ascenttime(); | |
| 1334 char_O_deco_status = 0; // calc nullzeit next time. | |
| 1335 return; | |
| 1336 } | |
| 212 | 1337 } |
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1338 |
| 212 | 1339 //---- Can we ascent to that stop at once, or is it just ascenting ? |
| 1340 new_presure = temp_depth_limit * 0.09985 // Convert to relative bar, | |
| 1341 + pres_surface; // To absolute, | |
| 1342 | |
| 1343 if( (temp_deco - new_presure) > 1.0 ) // More than 10m/mn ? | |
| 1344 { | |
| 1345 temp_deco -= 1.0; // Just keep ascending. | |
| 1346 sim_gas_delay = 0; // Reset gas delay, | |
| 1347 sim_gas_last_used = backup_gas_last_used; // and usage history. | |
| 1348 } | |
| 1349 else | |
| 1350 { | |
| 1351 temp_deco = new_presure; | |
| 1352 update_deco_table(); // This is a one minute stops. | |
| 203 | 1353 } |
| 197 | 1354 |
| 203 | 1355 //---- Then update tissue and decoplan ------------------------------- |
| 1356 sim_dive_mins++; // Advance simulated time by 1 minute. | |
| 217 | 1357 set_gas(); // Apply any simulated gas change, once validated. |
| 212 | 1358 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1359 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1360 } |
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1361 |
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1362 // Surface not reached, need more stops... |
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1363 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1364 } |
| 1365 | |
| 167 | 1366 ////////////////////////////////////////////////////////////////////////////// |
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1367 // Simulation ascention to first deco stop. |
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1368 // |
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1369 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1370 // there is no need to break on more that 16 iterations |
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1371 // (or we are already in deep shit). |
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1372 // |
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1373 void sim_ascent_to_first_stop(void) |
| 116 | 1374 { |
| 171 | 1375 update_startvalues(); |
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1376 clear_deco_table(); |
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1377 |
| 200 | 1378 temp_deco = pres_respiration; // Starts from current real depth. |
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1379 |
| 212 | 1380 // Do we have a gas switch going on ? |
| 1381 if( sim_gas_delay > sim_dive_mins ) | |
| 1382 return; | |
| 1383 | |
| 203 | 1384 // Loop until first stop, gas switch, or surface is reached. |
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1385 for(;;) |
| 116 | 1386 { |
| 203 | 1387 // No: try ascending 1 full minute. |
| 1388 temp_deco -= 1.0; // Ascent 1 min, at 10m/min. == 1bar/min. | |
| 1389 | |
| 212 | 1390 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1391 sim_limit(GF_low); | |
| 1392 | |
| 1393 // Did we reach deepest remaining stop ? | |
| 1394 if( temp_deco <= sim_lead_tissue_limit ) | |
| 1395 { | |
| 1396 temp_deco += 1.0; // Restore last correct depth. | |
| 1397 break; // Return stop found ! | |
| 1398 } | |
| 1399 | |
| 203 | 1400 // Did we reach surface ? |
| 1401 if( temp_deco <= pres_surface ) | |
| 1402 { | |
| 1403 temp_deco = pres_surface; // Yes: finished ! | |
| 1404 break; | |
| 1405 } | |
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1406 |
| 212 | 1407 // Check gas change 5 meter below new depth. |
| 1408 temp_depth_limit = (temp_deco + 0.5 - pres_surface) / 0.09985; | |
| 217 | 1409 deepest_gas_switch(); |
| 212 | 1410 if( sim_gas_delay > sim_dive_mins ) |
| 1411 break; | |
| 171 | 1412 |
| 203 | 1413 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 212 | 1414 sim_alveolar_presures(); // Still uses temp_deco. |
| 203 | 1415 sim_tissue(1); // and update tissues for 1 min. |
| 1416 } | |
| 167 | 1417 } |
| 116 | 1418 |
| 167 | 1419 ////////////////////////////////////////////////////////////////////////////// |
| 1420 // calc_tissue | |
| 1421 // | |
| 116 | 1422 // optimized in v.101 |
| 167 | 1423 // |
| 184 | 1424 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1425 { |
| 236 | 1426 assert( 0.00 <= ppN2 && ppN2 < 6.40 ); // 80% N2 at 70m |
| 1427 assert( 0.00 <= ppHe && ppHe < 18.9 ); // 90% He at 200m | |
| 1428 | |
| 126 | 1429 for (ci=0;ci<16;ci++) |
| 1430 { | |
| 184 | 1431 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1432 |
| 126 | 1433 // N2 |
| 236 | 1434 temp_tissue = (ppN2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1435 temp_tissue_safety(); |
| 167 | 1436 pres_tissue[ci] += temp_tissue; |
| 165 | 1437 |
| 126 | 1438 // He |
| 200 | 1439 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1440 temp_tissue_safety(); |
| 167 | 1441 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1442 } |
| 167 | 1443 } |
| 116 | 1444 |
| 167 | 1445 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1446 // calc_limit |
| 167 | 1447 // |
| 192 | 1448 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1449 // |
| 192 | 1450 static void calc_limit(PARAMETER float GF_current) |
| 167 | 1451 { |
| 192 | 1452 char_O_gtissue_no = 255; |
| 1453 calc_lead_tissue_limit = 0.0; | |
| 1454 | |
| 1455 for (ci=0;ci<16;ci++) | |
| 1456 { | |
| 1457 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1458 | |
| 1459 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
| 1460 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
| 1461 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1462 |
| 192 | 1463 // Apply the Eric Baker's varying gradient factor correction. |
| 1464 // Note: the correction factor depends both on GF and b, | |
| 1465 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1466 // so that can change who is the leading gas... | |
| 1467 // Note: Also depends of the GF. So the calcul is different for | |
| 1468 // GF_low, current GF, or GF_high... | |
| 1469 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1470 // hence what would happend at surface, | |
| 1471 // hence at GF_high. | |
| 1472 if( char_I_deco_model == 1 ) | |
| 1473 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1474 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1475 else | |
| 1476 p = (p - var_N2_a) * var_N2_b; | |
| 1477 if( p < 0 ) p = 0; | |
| 1478 | |
| 1479 pres_tissue_limit[ci] = p; | |
| 1480 if( p > calc_lead_tissue_limit ) | |
| 1481 { | |
| 1482 char_O_gtissue_no = ci; | |
| 1483 calc_lead_tissue_limit = p; | |
| 1484 } | |
| 1485 } | |
| 197 | 1486 |
| 1487 assert( char_O_gtissue_no < 16 ); | |
| 1488 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1489 } |
| 1490 | |
| 1491 ////////////////////////////////////////////////////////////////////////////// | |
| 1492 // calc_nullzeit | |
| 1493 // | |
| 1494 // calculates the remaining bottom time | |
| 1495 // | |
| 1496 // unchanged in v.101 | |
| 1497 // | |
| 1498 static void calc_nullzeit(void) | |
| 1499 { | |
| 203 | 1500 overlay unsigned char loop; |
| 200 | 1501 update_startvalues(); |
| 167 | 1502 |
| 116 | 1503 char_O_nullzeit = 0; |
| 167 | 1504 for(loop = 1; loop <= 17; loop++) |
| 116 | 1505 { |
| 1506 backup_sim_pres_tissue(); | |
| 197 | 1507 sim_tissue(2); // 10 min. |
| 192 | 1508 sim_limit(GF_high); |
| 167 | 1509 |
| 192 | 1510 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1511 { |
| 1512 restore_sim_pres_tissue(); | |
| 1513 break; | |
| 1514 } | |
| 1515 // Validate once we know its good. | |
| 1516 char_O_nullzeit += 10; | |
| 167 | 1517 } |
| 1518 | |
| 116 | 1519 if (char_O_nullzeit < 60) |
| 1520 { | |
| 167 | 1521 for(loop=1; loop <= 10; loop++) |
| 116 | 1522 { |
| 197 | 1523 sim_tissue(1); // 1 min |
| 192 | 1524 sim_limit(GF_high); |
| 1525 | |
| 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 break; |
| 1528 char_O_nullzeit++; | |
| 167 | 1529 } |
| 185 | 1530 } |
| 1531 } | |
| 116 | 1532 |
| 167 | 1533 ////////////////////////////////////////////////////////////////////////////// |
| 1534 // backup_sim_pres_tissue | |
| 1535 // | |
| 116 | 1536 void backup_sim_pres_tissue(void) |
| 1537 { | |
| 167 | 1538 overlay unsigned char x; |
| 1539 | |
| 1540 for(x = 0; x<32; x++) | |
| 126 | 1541 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1542 } |
| 116 | 1543 |
| 167 | 1544 ////////////////////////////////////////////////////////////////////////////// |
| 1545 // restore_sim_pres_tissue | |
| 1546 // | |
| 116 | 1547 void restore_sim_pres_tissue(void) |
| 1548 { | |
| 167 | 1549 overlay unsigned char x; |
| 1550 | |
| 1551 for(x = 0; x<32; x++) | |
| 126 | 1552 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1553 } |
| 116 | 1554 |
| 167 | 1555 ////////////////////////////////////////////////////////////////////////////// |
| 1556 // calc_ascenttime | |
| 1557 // | |
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1558 static void calc_ascenttime(void) |
| 116 | 1559 { |
| 126 | 1560 if (pres_respiration > pres_surface) |
| 1561 { | |
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1562 overlay unsigned char x; |
| 168 | 1563 |
| 192 | 1564 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
| 1565 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
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1566 if (ascent < 0.0) |
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1567 ascent = 0.0; |
| 203 | 1568 int_O_ascenttime = (unsigned short)(ascent + 0.99); |
| 168 | 1569 |
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1570 for(x=0; x<32 && internal_deco_depth[x]; x++) |
| 203 | 1571 int_O_ascenttime += (unsigned short)internal_deco_time[x]; |
| 126 | 1572 } |
| 1573 else | |
| 168 | 1574 int_O_ascenttime = 0; |
| 167 | 1575 } |
| 116 | 1576 |
| 167 | 1577 ////////////////////////////////////////////////////////////////////////////// |
| 1578 // update_startvalues | |
| 1579 // | |
| 116 | 1580 // updated in v.102 |
| 167 | 1581 // |
| 116 | 1582 void update_startvalues(void) |
| 1583 { | |
| 167 | 1584 overlay unsigned char x; |
| 116 | 1585 |
| 201 | 1586 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1587 for (x = 0;x<16;x++) |
| 1588 { | |
| 1589 sim_pres_tissue[x] = pres_tissue[x]; | |
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1590 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1591 sim_pres_tissue_limit[x] = pres_tissue_limit[x]; |
| 1592 } | |
| 197 | 1593 |
| 201 | 1594 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1595 sim_lead_tissue_limit = 0.0; |
| 1596 sim_lead_tissue_no = 255; | |
| 167 | 1597 } |
| 116 | 1598 |
| 167 | 1599 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1600 // sim_tissue |
| 167 | 1601 // |
| 116 | 1602 // optimized in v.101 |
| 167 | 1603 // |
| 1604 // Function very simular to calc_tissue, but: | |
| 1605 // + Use a 1min or 10min period. | |
| 1606 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1607 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1608 { |
| 236 | 1609 assert( 0.00 <= ppN2 && ppN2 < 6.40 ); // 80% N2 at 70m |
| 1610 assert( 0.00 <= ppHe && ppHe < 18.9 ); // 90% He at 200m | |
| 1611 | |
| 192 | 1612 for(ci=0; ci<16; ci++) |
| 126 | 1613 { |
| 184 | 1614 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1615 |
| 126 | 1616 // N2 |
| 236 | 1617 temp_tissue = (ppN2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1618 temp_tissue_safety(); |
| 167 | 1619 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1620 |
| 1621 // He | |
| 200 | 1622 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1623 temp_tissue_safety(); |
| 167 | 1624 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1625 } |
| 167 | 1626 } |
| 116 | 1627 |
| 167 | 1628 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1629 // sim_limit() |
| 1630 // | |
| 1631 // New in v.111 | |
| 1632 // | |
| 1633 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1634 // different depth, because it depends on current gradient factor. | |
| 167 | 1635 // |
| 192 | 1636 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1637 { |
| 212 | 1638 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1639 | |
| 192 | 1640 sim_lead_tissue_limit = 0.0; |
| 212 | 1641 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1642 |
| 1643 for(ci=0; ci<16; ci++) | |
| 1644 { | |
| 1645 overlay float p = sim_pres_tissue[ci] + (sim_pres_tissue+16)[ci]; | |
| 1646 | |
| 1647 read_buhlmann_coefficients(-1); | |
| 1648 var_N2_a = (var_N2_a * sim_pres_tissue[ci] + var_He_a * (sim_pres_tissue+16)[ci]) / p; | |
| 1649 var_N2_b = (var_N2_b * sim_pres_tissue[ci] + var_He_b * (sim_pres_tissue+16)[ci]) / p; | |
| 1650 | |
| 1651 // Apply the Eric Baker's varying gradient factor correction. | |
| 1652 // Note: the correction factor depends both on GF and b, | |
| 1653 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1654 // so that can change who is the leading gas... | |
| 1655 // Note: Also depends of the GF_current... | |
| 1656 if( char_I_deco_model == 1 ) | |
| 1657 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1658 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1659 else | |
| 1660 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1661 if( p < 0.0 ) p = 0.0; |
| 192 | 1662 |
| 1663 sim_pres_tissue_limit[ci] = p; | |
| 1664 if( p > sim_lead_tissue_limit ) | |
| 1665 { | |
| 1666 sim_lead_tissue_no = ci; | |
| 1667 sim_lead_tissue_limit = p; | |
| 1668 } | |
| 1669 } // for ci | |
| 197 | 1670 |
| 1671 assert( sim_lead_tissue_no < 16 ); | |
| 237 | 1672 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1673 } |
| 116 | 1674 |
| 167 | 1675 ////////////////////////////////////////////////////////////////////////////// |
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1676 // clear_deco_table |
| 167 | 1677 // |
| 1678 // unchanged in v.101 | |
| 1679 // | |
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1680 static void clear_deco_table(void) |
| 116 | 1681 { |
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1682 overlay unsigned char x; |
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1683 |
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1684 for(x=0; x<32; ++x) |
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1685 { |
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1686 internal_deco_time [x] = 0; |
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1687 internal_deco_depth[x] = 0; |
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1688 } |
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1689 } |
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1690 |
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1691 ////////////////////////////////////////////////////////////////////////////// |
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1692 // update_deco_table |
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1693 // |
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1694 // Add 1 min to current stop. |
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1695 // |
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1696 // Inputs: |
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1697 // temp_depth_limit = stop's depth, in meters. |
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1698 // In/Out: |
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1699 // internal_deco_depth[] : depth (in meters) of each stops. |
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1700 // internal_deco_time [] : time (in minutes) of each stops. |
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1701 // |
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1702 static void update_deco_table() |
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1703 { |
| 192 | 1704 overlay unsigned char x; |
| 200 | 1705 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1706 |
| 192 | 1707 for(x=0; x<32; ++x) |
| 1708 { | |
| 212 | 1709 // Make sure deco-stops are recorded in order: |
| 1710 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
| 1711 | |
| 200 | 1712 if( internal_deco_depth[x] == temp_depth_limit ) |
| 192 | 1713 { |
| 1714 // Do not overflow (max 255') | |
| 1715 if( internal_deco_time[x] < 255 ) | |
| 1716 { | |
| 1717 internal_deco_time[x]++; | |
| 1718 return; | |
| 1719 } | |
| 1720 // But store extra in the next stop... | |
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1721 } |
| 192 | 1722 |
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1723 if( internal_deco_depth[x] == 0 ) |
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1724 { |
| 192 | 1725 internal_deco_depth[x] = temp_depth_limit; |
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1726 internal_deco_time[x] = 1; |
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1727 return; |
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1728 } |
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1729 } |
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1730 |
| 192 | 1731 // Can't store stops at more than 96m. |
| 1732 // Or stops at less that 3m too. | |
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1733 // Just do nothing with that... |
| 167 | 1734 } |
| 116 | 1735 |
| 167 | 1736 ////////////////////////////////////////////////////////////////////////////// |
| 1737 // calc_gradient_factor | |
| 1738 // | |
| 165 | 1739 // optimized in v.101 (var_N2_a) |
| 116 | 1740 // new code in v.102 |
| 167 | 1741 // |
| 1742 static void calc_gradient_factor(void) | |
| 116 | 1743 { |
| 197 | 1744 overlay float gf; |
| 237 | 1745 |
| 197 | 1746 assert( char_O_gtissue_no < 16 ); |
| 237 | 1747 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1748 |
| 116 | 1749 // tissue > respiration (entsaettigungsvorgang) |
| 1750 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1751 // dh. 0% = respiration == tissue | |
| 1752 // dh. 100% = respiration == limit | |
| 197 | 1753 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
| 1754 if( temp_tissue < pres_respiration ) | |
| 1755 gf = 0.0; | |
| 1756 else | |
| 1757 { | |
| 1758 gf = (temp_tissue - pres_respiration) | |
| 1759 / (temp_tissue - pres_tissue_limit[char_O_gtissue_no]) | |
| 1760 * 100.0; | |
| 1761 if( gf > 255.0 ) gf = 255.0; | |
| 1762 if( gf < 0.0 ) gf = 0.0; | |
| 1763 } | |
| 1764 char_O_gradient_factor = (unsigned char)gf; | |
| 116 | 1765 |
| 1766 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1767 { | |
| 197 | 1768 overlay float rgf; |
| 1769 | |
| 1770 if( low_depth == 0 ) | |
| 1771 rgf = GF_high; | |
| 1772 else | |
| 1773 { | |
| 1774 overlay float temp1 = low_depth * 0.09995; | |
| 1775 overlay float temp2 = pres_respiration - pres_surface; | |
| 186 | 1776 |
| 197 | 1777 if (temp2 <= 0) |
| 1778 rgf = GF_high; | |
| 1779 else if (temp2 >= temp1) | |
| 1780 rgf = GF_low; | |
| 1781 else | |
| 1782 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1783 } | |
| 186 | 1784 |
| 197 | 1785 rgf = gf / rgf; // gf is already in percent |
| 1786 if( rgf < 0.0 ) rgf = 0.0; | |
| 1787 if( rgf > 255.0 ) rgf = 255.0; | |
| 1788 char_O_relative_gradient_GF = (unsigned char)rgf; | |
| 116 | 1789 } // calc relative gradient factor |
| 1790 else | |
| 1791 { | |
| 186 | 1792 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1793 } |
| 167 | 1794 } |
| 116 | 1795 |
| 167 | 1796 ////////////////////////////////////////////////////////////////////////////// |
| 1797 // deco_calc_desaturation_time | |
| 1798 // | |
| 116 | 1799 // FIXED N2_ratio |
| 1800 // unchanged in v.101 | |
| 233 | 1801 // Inputs: int_I_pres_surface, ppWVapour, char_I_desaturation_multiplier |
| 1802 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] | |
| 167 | 1803 // |
| 116 | 1804 void deco_calc_desaturation_time(void) |
| 1805 { | |
| 203 | 1806 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 200 | 1807 overlay float temp1; |
| 197 | 1808 overlay float temp2; |
| 1809 overlay float temp3; | |
| 1810 overlay float temp4; | |
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1811 RESET_C_STACK |
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1812 |
| 233 | 1813 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 1814 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 1815 | |
| 237 | 1816 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 1817 pres_surface = int_I_pres_surface * 0.001; |
| 236 | 1818 ppN2 = N2_ratio * (pres_surface - ppWVapour); |
| 126 | 1819 int_O_desaturation_time = 0; |
| 1820 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 233 | 1821 |
| 126 | 1822 for (ci=0;ci<16;ci++) |
| 1823 { | |
| 200 | 1824 overlay float var_N2_halftime = buhlmann_ht[ci]; |
| 1825 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; | |
| 116 | 1826 |
| 126 | 1827 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1828 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1829 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1830 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1831 // N2 | |
| 236 | 1832 temp1 = 1.05 * ppN2; |
| 126 | 1833 temp1 = temp1 - pres_tissue[ci]; |
| 236 | 1834 temp2 = ppN2 - pres_tissue[ci]; |
| 126 | 1835 if (temp2 >= 0.0) |
| 1836 { | |
| 233 | 1837 temp1 = 0.0; |
| 1838 temp2 = 0.0; | |
| 126 | 1839 } |
| 1840 else | |
| 1841 temp1 = temp1 / temp2; | |
| 1842 if (temp1 > 0.0) | |
| 1843 { | |
| 1844 temp1 = log(1.0 - temp1); | |
| 1845 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1846 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1847 // minus because log is negative | |
| 165 | 1848 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 | 1849 } |
| 1850 else | |
| 1851 { | |
| 233 | 1852 temp1 = 0.0; |
| 1853 temp2 = 0.0; | |
| 126 | 1854 } |
| 116 | 1855 |
| 126 | 1856 // He |
| 167 | 1857 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1858 if (temp3 >= 0.0) |
| 1859 { | |
| 233 | 1860 temp3 = 0.0; |
| 1861 temp4 = 0.0; | |
| 126 | 1862 } |
| 1863 else | |
| 167 | 1864 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 126 | 1865 if (temp3 > 0.0) |
| 1866 { | |
| 1867 temp3 = log(1.0 - temp3); | |
| 1868 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1869 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1870 // minus because log is negative | |
| 165 | 1871 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1872 } |
| 1873 else | |
| 1874 { | |
| 233 | 1875 temp3 = 0.0; |
| 1876 temp4 = 0.0; | |
| 126 | 1877 } |
| 116 | 1878 |
| 126 | 1879 // saturation_time (for flight) |
| 1880 if (temp4 > temp2) | |
| 203 | 1881 desat_time = (unsigned short)temp4; |
| 126 | 1882 else |
| 203 | 1883 desat_time = (unsigned short)temp2; |
| 167 | 1884 if(desat_time > int_O_desaturation_time) |
| 1885 int_O_desaturation_time = desat_time; | |
| 116 | 1886 |
| 126 | 1887 // N2 saturation in multiples of halftime for display purposes |
| 1888 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1889 temp2 = temp2 + 80.0; // set center | |
| 1890 if (temp2 < 0.0) | |
| 1891 temp2 = 0.0; | |
| 1892 if (temp2 > 255.0) | |
| 1893 temp2 = 255.0; | |
| 1894 char_O_tissue_saturation[ci] = (char)temp2; | |
| 233 | 1895 |
| 126 | 1896 // He saturation in multiples of halftime for display purposes |
| 1897 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1898 temp4 = temp4 + 80.0; // set center | |
| 1899 if (temp4 < 0.0) | |
| 1900 temp4 = 0.0; | |
| 1901 if (temp4 > 255.0) | |
| 1902 temp4 = 255.0; | |
| 167 | 1903 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1904 } // for |
| 167 | 1905 } |
| 116 | 1906 |
| 167 | 1907 ////////////////////////////////////////////////////////////////////////////// |
| 1908 // calc_wo_deco_step_1_min | |
| 1909 // | |
| 116 | 1910 // FIXED N2 Ratio |
| 1911 // optimized in v.101 (...saturation_multiplier) | |
| 1912 // desaturation slowed down to 70,42% | |
| 167 | 1913 // |
| 1914 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1915 { |
| 1916 if(flag_in_divemode) | |
| 1917 { | |
| 1918 flag_in_divemode = 0; | |
| 1919 set_dbg_end_of_dive(); | |
| 1920 } | |
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1921 |
| 126 | 1922 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 233 | 1923 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
| 1924 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
| 236 | 1925 ppN2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body |
| 200 | 1926 ppHe = 0.0; |
| 126 | 1927 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 1928 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 1929 |
| 192 | 1930 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 1931 |
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1932 clear_deco_table(); |
| 200 | 1933 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 1934 char_O_nullzeit = 0; |
| 168 | 1935 int_O_ascenttime = 0; |
| 126 | 1936 calc_gradient_factor(); |
| 167 | 1937 } |
| 126 | 1938 |
| 167 | 1939 ////////////////////////////////////////////////////////////////////////////// |
| 1940 ////////////////////////////////////////////////////////////////////////////// | |
| 1941 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1942 ////////////////////////////////////////////////////////////////////////////// | |
| 1943 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1944 |
| 184 | 1945 #ifndef CROSS_COMPILE |
| 116 | 1946 void deco_hash(void) |
| 1947 { | |
| 167 | 1948 overlay unsigned char md_i, md_j; // Loop index. |
| 1949 overlay unsigned char md_t; | |
| 1950 overlay unsigned char md_buffer[16]; | |
| 1951 overlay unsigned char md_temp; | |
| 203 | 1952 overlay unsigned short md_pointer; |
| 167 | 1953 |
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1954 RESET_C_STACK |
| 126 | 1955 |
| 1956 // init | |
| 164 | 1957 for(md_i=0;md_i<16;md_i++) |
| 126 | 1958 { |
| 1959 md_state[md_i] = 0; | |
| 164 | 1960 char_O_hash[md_i] = 0; |
| 126 | 1961 } // for md_i 16 |
| 116 | 1962 |
| 126 | 1963 _asm |
| 167 | 1964 movlw 0x01 // md_pi address. |
| 1965 movwf TBLPTRU,0 | |
| 1966 movlw 0x7E | |
| 1967 movwf TBLPTRH,0 | |
| 1968 movlw 0x00 | |
| 1969 movwf TBLPTRL,0 | |
| 126 | 1970 _endasm; |
| 165 | 1971 md_i = 0; |
| 1972 do { | |
| 126 | 1973 _asm |
| 1974 TBLRDPOSTINC | |
| 1975 movff TABLAT,md_temp | |
| 1976 _endasm | |
| 165 | 1977 md_pi_subst[md_i++] = md_temp; |
| 1978 } while( md_i != 0 ); | |
| 1979 | |
| 126 | 1980 _asm |
| 167 | 1981 movlw 0x00 |
| 1982 movwf TBLPTRU,0 | |
| 1983 movlw 0x00 | |
| 1984 movwf TBLPTRH,0 | |
| 1985 movlw 0x00 | |
| 1986 movwf TBLPTRL,0 | |
| 126 | 1987 _endasm |
| 167 | 1988 |
| 126 | 1989 // cycle buffers |
| 1990 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 1991 { | |
| 1992 md_t = 0; | |
| 1993 for (md_i=0;md_i<16;md_i++) | |
| 1994 { | |
| 1995 if(md_pointer == 9) | |
| 164 | 1996 md_temp = char_O_hash[md_i]; |
| 126 | 1997 else |
| 1998 { | |
| 1999 _asm | |
| 167 | 2000 TBLRDPOSTINC |
| 2001 movff TABLAT,md_temp | |
| 126 | 2002 _endasm |
| 2003 } // else | |
| 167 | 2004 |
| 2005 md_buffer[md_i] = md_temp; | |
| 186 | 2006 md_state[md_i+16] = md_temp; |
| 2007 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2008 } // for md_i 16 |
| 2009 | |
| 2010 for (md_i=0;md_i<18;md_i++) | |
| 2011 { | |
| 2012 for (md_j=0;md_j<48;md_j++) | |
| 2013 { | |
| 167 | 2014 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2015 md_t = md_state[md_j]; |
| 2016 } // for md_j 48 | |
| 2017 md_t = (unsigned char)(md_t+1); | |
| 2018 } // for md_i 18 | |
| 164 | 2019 md_t = char_O_hash[15]; |
| 126 | 2020 |
| 2021 for (md_i=0;md_i<16;md_i++) | |
| 2022 { | |
| 167 | 2023 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2024 md_t = char_O_hash[md_i]; |
| 126 | 2025 } // for md_i 16 |
| 2026 } // for md_pointer | |
| 116 | 2027 } // void deco_hash(void) |
| 184 | 2028 #endif |
| 116 | 2029 |
| 167 | 2030 ////////////////////////////////////////////////////////////////////////////// |
| 2031 // deco_clear_CNS_fraction | |
| 2032 // | |
| 116 | 2033 // new in v.101 |
| 167 | 2034 // |
| 116 | 2035 void deco_clear_CNS_fraction(void) |
| 2036 { | |
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2037 RESET_C_STACK |
| 237 | 2038 |
| 126 | 2039 CNS_fraction = 0.0; |
| 2040 char_O_CNS_fraction = 0; | |
| 167 | 2041 } |
| 116 | 2042 |
| 167 | 2043 ////////////////////////////////////////////////////////////////////////////// |
| 2044 // deco_calc_CNS_fraction | |
| 2045 // | |
| 116 | 2046 // new in v.101 |
| 2047 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 2048 // |
| 116 | 2049 // Input: char_I_actual_ppO2 |
| 2050 // Output: char_O_CNS_fraction | |
| 2051 // Uses and Updates: CNS_fraction | |
| 2052 // Uses: acutal_ppO2 | |
| 167 | 2053 // |
| 116 | 2054 void deco_calc_CNS_fraction(void) |
| 2055 { | |
| 167 | 2056 overlay float actual_ppO2; |
| 126 | 2057 RESET_C_STACK |
| 167 | 2058 |
| 237 | 2059 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); |
| 2060 assert( char_I_actual_ppO2 > 15 ); | |
| 2061 | |
| 126 | 2062 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 2063 |
| 126 | 2064 if (char_I_actual_ppO2 < 50) |
| 2065 CNS_fraction = CNS_fraction;// no changes | |
| 2066 else if (char_I_actual_ppO2 < 60) | |
| 2067 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 2068 else if (char_I_actual_ppO2 < 70) | |
| 2069 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 2070 else if (char_I_actual_ppO2 < 80) | |
| 2071 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 2072 else if (char_I_actual_ppO2 < 90) | |
| 2073 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 2074 else if (char_I_actual_ppO2 < 110) | |
| 2075 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 2076 else if (char_I_actual_ppO2 < 150) | |
| 2077 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 2078 else if (char_I_actual_ppO2 < 160) | |
| 2079 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 2080 else if (char_I_actual_ppO2 < 165) | |
| 2081 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 | |
| 2082 else if (char_I_actual_ppO2 < 170) | |
| 2083 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 2084 else if (char_I_actual_ppO2 < 175) | |
| 2085 CNS_fraction = 0.00136 + CNS_fraction; | |
| 2086 else if (char_I_actual_ppO2 < 180) | |
| 2087 CNS_fraction = 0.00180 + CNS_fraction; | |
| 2088 else if (char_I_actual_ppO2 < 185) | |
| 2089 CNS_fraction = 0.00237 + CNS_fraction; | |
| 2090 else if (char_I_actual_ppO2 < 190) | |
| 2091 CNS_fraction = 0.00310 + CNS_fraction; | |
| 2092 else if (char_I_actual_ppO2 < 195) | |
| 2093 CNS_fraction = 0.00401 + CNS_fraction; | |
| 2094 else if (char_I_actual_ppO2 < 200) | |
| 2095 CNS_fraction = 0.00517 + CNS_fraction; | |
| 2096 else if (char_I_actual_ppO2 < 230) | |
| 2097 CNS_fraction = 0.0209 + CNS_fraction; | |
| 2098 else | |
| 2099 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 2100 |
| 126 | 2101 if (CNS_fraction > 2.5) |
| 2102 CNS_fraction = 2.5; | |
| 2103 if (CNS_fraction < 0.0) | |
| 2104 CNS_fraction = 0.0; | |
| 2105 | |
| 2106 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2107 } |
| 116 | 2108 |
| 167 | 2109 ////////////////////////////////////////////////////////////////////////////// |
| 2110 // deco_calc_CNS_decrease_15min | |
| 2111 // | |
| 116 | 2112 // new in v.101 |
| 167 | 2113 // |
| 116 | 2114 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2115 // (Used in sleepmode, for low battery mode). |
| 167 | 2116 // |
| 116 | 2117 // Output: char_O_CNS_fraction |
| 2118 // Uses and Updates: CNS_fraction | |
| 167 | 2119 // |
| 116 | 2120 void deco_calc_CNS_decrease_15min(void) |
| 2121 { | |
| 237 | 2122 RESET_C_STACK |
| 2123 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
| 2124 | |
| 126 | 2125 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2126 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2127 } | |
| 116 | 2128 |
| 167 | 2129 ////////////////////////////////////////////////////////////////////////////// |
| 2130 // deco_calc_percentage | |
| 2131 // | |
| 116 | 2132 // new in v.101 |
| 167 | 2133 // |
| 116 | 2134 // calculates int_I_temp * char_I_temp / 100 |
| 2135 // output is int_I_temp | |
| 200 | 2136 // |
| 2137 // Used to compute NoFly remaining time. | |
|
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2138 // |
| 116 | 2139 void deco_calc_percentage(void) |
| 2140 { | |
|
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|
2141 RESET_C_STACK |
|
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2142 |
| 237 | 2143 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 2144 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
| 2145 | |
|
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|
2146 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2147 |
| 2148 assert( int_I_temp < 1440 ); // Less than 24h... | |
|
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|
2149 } |
|
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2150 |
|
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2151 |
|
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|
2152 ////////////////////////////////////////////////////////////////////////////// |
|
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2153 // deco_gas_volumes |
|
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2154 // |
|
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2155 // new in v.111 |
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2156 // |
|
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2157 // calculates volumes for each gas. |
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2158 // |
|
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2159 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
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2160 // Gas list. |
|
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2161 // char_I_first_gas is the bottom gas. |
|
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2162 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
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2163 // CF#54 == TRUE if shallowest stop first. |
|
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2164 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) |
|
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|
2165 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0). |
| 224 | 2166 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
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2167 // |
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|
2168 void deco_gas_volumes(void) |
|
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2169 { |
|
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|
2170 overlay float volumes[5]; |
|
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2171 overlay float ascent_usage; |
|
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2172 overlay unsigned char i, deepest_first; |
|
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2173 RESET_C_STACK |
|
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2174 |
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|
2175 //---- initialize with bottom consumption -------------------------------- |
|
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2176 for(i=0; i<5; ++i) // Nothing yet... |
|
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|
2177 volumes[i] = 0.0; |
|
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2178 |
|
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2179 assert( 1 <= char_I_first_gas && char_I_first_gas <= 5); |
|
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2180 volumes[char_I_first_gas - 1] |
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2181 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. |
|
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2182 * char_I_bottom_time // in minutes. |
|
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2183 * read_custom_function(56) // In deci-liter/minutes. |
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2184 * 0.1; // deci-liters --> liters. |
|
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2185 |
|
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|
2186 //---- Ascent usage ------------------------------------------------------ |
|
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|
2187 |
|
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2188 deepest_first = read_custom_function(54) == 0; |
|
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|
2189 ascent_usage = read_custom_function(57) * 0.1; // In liter/minutes. |
|
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2190 |
| 224 | 2191 // Usage up to the first stop: |
| 2192 // - computed at MAX depth (easier, safer), | |
|
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2193 // - with an ascent speed of 10m/min. |
| 224 | 2194 // - with ascent litter / minutes. |
|
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2195 // - still using bottom gas: |
|
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|
2196 volumes[char_I_first_gas - 1] |
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2197 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar |
|
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2198 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) |
|
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2199 * ascent_usage; // Consumption ( xxx / min @ 1 bar) |
|
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|
2200 |
|
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|
2201 for(i=0; i<32; ++i) |
|
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2202 { |
| 224 | 2203 overlay unsigned char j, gas; |
|
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2204 overlay unsigned char depth, time, ascent; |
|
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2205 |
|
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2206 // Manage stops in reverse order (CF#54) |
|
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|
2207 if( deepest_first ) |
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|
2208 { |
|
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2209 time = char_O_deco_time[i]; |
|
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2210 if( time == 0 ) break; // End of table: done. |
|
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2211 |
|
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2212 ascent = depth = char_O_deco_depth[i]; |
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2213 if( i < 31 ) |
|
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2214 ascent -= char_O_deco_depth[i+1]; |
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2215 } |
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2216 else |
|
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2217 { |
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2218 time = char_O_deco_time[31-i]; |
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2219 if( time == 0 ) continue; // not yet: still searh table. |
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2220 |
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2221 ascent = depth = char_O_deco_depth[31-i]; |
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2222 if( i < 31 ) |
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2223 ascent -= char_O_deco_depth[30-i]; |
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2224 } |
|
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2225 |
|
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2226 // Gas switch depth ? |
| 225 | 2227 for(gas=j=0; j<5; ++j) |
|
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2228 { |
|
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2229 if( depth <= char_I_deco_gas_change[j] ) |
| 224 | 2230 if( (gas == 0) || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 2231 gas = j; | |
|
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2232 } |
|
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2233 |
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2234 // usage during stop: |
| 224 | 2235 // Note: because first gas is not in there, increment gas+1 |
|
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2236 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. |
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2237 * time // in minutes. |
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2238 * ascent_usage // in xxx / min @ 1bar. |
|
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2239 // Plus usage during ascent to the next stop, at 10m/min. |
|
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2240 + (depth*0.1 + 1.0) |
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2241 * ascent*0.1 // meter --> min |
| 225 | 2242 * ascent_usage; |
|
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2243 } |
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2244 |
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2245 //---- convert results for the ASM interface ----------------------------- |
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2246 for(i=0; i<5; ++i) |
| 224 | 2247 if( volumes[i] > 6553.4 ) |
| 2248 int_O_gas_volumes[i] = 65535; | |
|
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2249 else |
| 224 | 2250 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
| 116 | 2251 } |
| 2252 | |
| 167 | 2253 ////////////////////////////////////////////////////////////////////////////// |
| 2254 | |
| 116 | 2255 void deco_push_tissues_to_vault(void) |
| 2256 { | |
| 167 | 2257 overlay unsigned char x; |
|
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2258 RESET_C_STACK |
| 167 | 2259 |
| 116 | 2260 cns_vault = CNS_fraction; |
| 167 | 2261 for (x=0;x<32;x++) |
| 2262 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2263 } |
| 167 | 2264 |
| 116 | 2265 void deco_pull_tissues_from_vault(void) |
| 2266 { | |
| 167 | 2267 overlay unsigned char x; |
|
122
3003a8040b78
FIX again reset C data stack and frame pointer when entering C code.
JeanDo
parents:
116
diff
changeset
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2268 RESET_C_STACK |
| 167 | 2269 |
| 116 | 2270 CNS_fraction = cns_vault; |
| 167 | 2271 for (x=0;x<32;x++) |
| 2272 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2273 } |
| 2274 | |
| 167 | 2275 ////////////////////////////////////////////////////////////////////////////// |
| 2276 // | |
| 184 | 2277 #ifndef CROSS_COMPILE |
| 2278 void main() {} | |
| 2279 #endif |