Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 349:ed137d66ac65
Preparations for new "0x21" logbook format
| author | heinrichsweikamp |
|---|---|
| date | Mon, 30 May 2011 19:28:59 +0200 |
| parents | ecbbbd423e86 |
| children | b5b030c1ae7e |
| 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. |
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73 // 2011/02/15: [jDG] Fixed inconsistencies introduced by gas switch delays. |
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74 // 2011/03/21: [jDG] Added gas consumption (CF56 & CF57) evaluation for OCR mode. |
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75 // 2011/04/10: [jDG] Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco(). |
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76 // 2011/04/15: [jDG] Store low_depth in 32bits (w/o rounding), for a better stability. |
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77 // 2011/04/25: [jDG] Added 1mn mode for CNS calculation, to allow it for decoplanning. |
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78 // 2011/04/27: [jDG] Fixed char_O_gradient_factor calculation when model uses gradient-factor. |
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79 // 2011/05/02: [jDG] Added "Future TTS" function (CF58). |
| 338 | 80 // 2011/05/17: [jDG] Various cleanups. |
| 116 | 81 // |
| 167 | 82 // TODO: |
| 83 // + Allow to abort MD2 calculation (have to restart next time). | |
| 84 // | |
| 85 // Literature: | |
| 200 | 86 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 87 // 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 |
| 88 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 89 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 90 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 91 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 92 // |
| 93 // | |
| 116 | 94 |
| 95 // ********************* | |
| 96 // ** I N C L U D E S ** | |
| 97 // ********************* | |
| 98 #include <math.h> | |
| 167 | 99 |
| 192 | 100 // *********************************************** |
| 101 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 102 // *********************************************** | |
| 103 | |
| 104 #include "p2_definitions.h" | |
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105 #define TEST_MAIN |
| 192 | 106 #include "shared_definitions.h" |
| 107 | |
| 200 | 108 // Water vapour partial pressure in the lumb. |
| 317 | 109 #define ppWater 0.0627 |
| 110 #define METER_TO_BAR 0.09985 | |
| 111 #define BAR_TO_METER 10.0150 // (1.0/METER_TO_BAR) | |
| 200 | 112 |
| 167 | 113 // ************************* |
| 114 // ** P R O T O T Y P E S ** | |
| 115 // ************************* | |
| 116 | |
| 117 static void calc_hauptroutine(void); | |
| 118 static void calc_nullzeit(void); | |
| 119 | |
| 192 | 120 static void calc_tissue(PARAMETER unsigned char period); |
| 258 | 121 static void calc_limit(void); |
| 192 | 122 |
| 167 | 123 static void clear_tissue(void); |
| 124 static void calc_ascenttime(void); | |
| 125 static void update_startvalues(void); | |
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126 static void clear_deco_table(void); |
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127 static void update_deco_table(void); |
| 192 | 128 |
| 129 static void backup_sim_pres_tissue(void); | |
| 130 static void restore_sim_pres_tissue(void); | |
| 131 static void sim_tissue(PARAMETER unsigned char period); | |
| 132 static void sim_limit(PARAMETER float GF_current); | |
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133 static void sim_extra_time(void); |
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134 |
| 167 | 135 static void calc_gradient_factor(void); |
| 136 static void calc_wo_deco_step_1_min(void); | |
| 137 | |
| 138 static void calc_hauptroutine_data_input(void); | |
| 139 static void calc_hauptroutine_update_tissues(void); | |
| 140 static void calc_hauptroutine_calc_deco(void); | |
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141 static void sim_ascent_to_first_stop(void); |
| 167 | 142 |
| 241 | 143 static unsigned char gas_switch_deepest(void); |
| 144 static void gas_switch_set(void); | |
| 217 | 145 |
| 241 | 146 static unsigned char calc_nextdecodepth(void); |
| 116 | 147 |
| 200 | 148 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 149 #pragma udata bank4=0x400 |
| 116 | 150 |
| 151 static float temp_limit; | |
| 152 static float GF_low; | |
| 153 static float GF_high; | |
| 154 static float GF_delta; | |
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155 static float low_depth; // Depth of deepest stop |
| 192 | 156 static float locked_GF_step; // GF_delta / low_depth |
| 157 | |
| 158 static unsigned char temp_depth_limit; | |
| 171 | 159 |
| 192 | 160 // Simulation context: used to predict ascent. |
| 161 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 162 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 163 |
| 192 | 164 // Real context: what we are doing now. |
| 165 static float calc_lead_tissue_limit; // | |
| 116 | 166 |
| 338 | 167 static unsigned char internal_deco_time[NUM_STOPS]; |
| 168 static unsigned char internal_deco_depth[NUM_STOPS]; | |
| 116 | 169 |
| 170 static float cns_vault; | |
| 339 | 171 static float pres_tissue_N2_vault[NUM_COMP]; |
| 172 static float pres_tissue_He_vault[NUM_COMP]; | |
| 116 | 173 |
| 163 | 174 //---- Bank 5 parameters ----------------------------------------------------- |
| 175 #pragma udata bank5=0x500 | |
| 176 | |
| 167 | 177 static unsigned char ci; |
| 116 | 178 static float pres_respiration; |
| 179 static float pres_surface; | |
| 180 static float temp_deco; | |
| 236 | 181 static float ppN2; |
| 200 | 182 static float ppHe; |
| 116 | 183 static float temp_tissue; |
| 200 | 184 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 185 static float He_ratio; // Breathed gas helium ratio. | |
| 186 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 187 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 188 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 189 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 190 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 191 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 192 |
| 338 | 193 static float pres_diluent; // new in v.101 |
| 194 static float const_ppO2; // new in v.101 | |
| 116 | 195 |
| 241 | 196 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
| 197 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
| 203 | 198 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 199 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 200 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 201 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 202 static float CNS_fraction; // new in v.101 | |
| 203 static float float_saturation_multiplier; // new in v.101 | |
| 204 static float float_desaturation_multiplier; // new in v.101 | |
| 338 | 205 static float float_deco_distance; // new in v.101 |
| 206 static char flag_in_divemode; // new in v.108 | |
| 167 | 207 |
| 338 | 208 static unsigned char deco_gas_change[NUM_GAS]; // new in v.109 |
| 167 | 209 |
| 163 | 210 //---- Bank 6 parameters ----------------------------------------------------- |
| 211 #pragma udata bank6=0x600 | |
| 116 | 212 |
| 339 | 213 float pres_tissue_N2[NUM_COMP]; |
| 214 float pres_tissue_He[NUM_COMP]; | |
| 116 | 215 |
| 163 | 216 //---- Bank 7 parameters ----------------------------------------------------- |
| 217 #pragma udata bank7=0x700 | |
| 218 | |
| 339 | 219 float sim_pres_tissue_N2[NUM_COMP]; // 32 floats = 128 bytes. |
| 220 float sim_pres_tissue_He[NUM_COMP]; // 32 floats = 128 bytes. | |
| 221 static float sim_pres_tissue_backup_N2[NUM_COMP]; | |
| 222 static float sim_pres_tissue_backup_He[NUM_COMP]; | |
| 116 | 223 |
| 163 | 224 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 225 #pragma udata bank8=0x800 |
| 163 | 226 |
| 116 | 227 static char md_pi_subst[256]; |
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228 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 229 |
| 163 | 230 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 231 #pragma udata bank9=0x900 |
| 116 | 232 |
| 163 | 233 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 234 |
| 164 | 235 // internal, dbg: |
| 167 | 236 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 237 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 238 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 224 | 239 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
| 240 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
| 164 | 241 static float DBG_pres_surface; // new in v.108 |
| 242 static float DBG_GF_low; // new in v.108 | |
| 243 static float DBG_GF_high; // new in v.108 | |
| 244 static float DBG_const_ppO2; // new in v.108 | |
| 245 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 246 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 247 static float DBG_float_deco_distance; // new in v.108 | |
| 248 static float DBG_N2_ratio; // new in v.108 | |
| 249 static float DBG_He_ratio; // new in v.108 | |
| 250 | |
| 167 | 251 ////////////////////////////////////////////////////////////////////////////// |
| 252 ////////////////////////////////////////////////////////////////////////////// | |
| 253 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 254 ////////////////////////////////////////////////////////////////////////////// | |
| 255 ////////////////////////////////////////////////////////////////////////////// | |
| 256 // | |
| 257 // End of PROM code is 17F00, So push tables on PROM top... | |
| 258 // | |
| 259 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 260 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 261 |
| 167 | 262 // Magic table to compute the MD2 HASH |
| 263 // | |
| 264 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 265 rom const rom unsigned short md_pi[] = |
| 116 | 266 { |
| 267 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 268 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 269 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 270 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 271 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 272 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 273 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 274 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 275 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 276 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 277 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 278 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 279 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 280 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 281 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 282 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 283 }; | |
| 284 | |
| 167 | 285 ////////////////////////////////////////////////////////////////////////////// |
| 286 ////////////////////////////////////////////////////////////////////////////// | |
| 287 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 288 ////////////////////////////////////////////////////////////////////////////// | |
| 289 ////////////////////////////////////////////////////////////////////////////// | |
| 290 // | |
| 116 | 291 // all new in v.102 |
| 292 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 293 | |
| 294 #pragma code p2_deco = 0x0C000 | |
| 295 | |
| 167 | 296 ////////////////////////////////////////////////////////////////////////////// |
| 297 // DBS - debug on start of dive | |
| 298 // | |
| 299 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 300 { |
| 167 | 301 overlay char i; // Local loop index. |
| 302 | |
| 303 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 304 int_O_DBS_bitfield = 0; |
| 305 int_O_DBS2_bitfield = 0; | |
| 306 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 307 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 308 else | |
| 309 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 310 int_O_DBG_post_bitfield = 0; | |
| 167 | 311 |
| 312 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 313 char_O_NDL_at_20mtr = 255; |
| 314 | |
| 167 | 315 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 316 DBG_N2_ratio = N2_ratio; |
| 317 DBG_He_ratio = He_ratio; | |
| 318 DBG_char_I_deco_model = char_I_deco_model; | |
| 319 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 320 DBG_pres_surface = pres_surface; | |
| 321 DBG_GF_low = GF_low; | |
| 322 DBG_GF_high = GF_high; | |
| 323 DBG_const_ppO2 = const_ppO2; | |
| 224 | 324 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 325 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 326 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 327 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 328 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 329 DBG_float_deco_distance = float_deco_distance; | |
| 330 | |
| 167 | 331 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 332 if(char_I_deco_model) |
| 333 int_O_DBS_bitfield |= DBS_mode; | |
| 334 if(const_ppO2) | |
| 335 int_O_DBS_bitfield |= DBS_ppO2; | |
| 339 | 336 for(i = 0; i < NUM_COMP; i++) |
| 337 if(pres_tissue_He[i]) | |
| 116 | 338 int_O_DBS_bitfield |= DBS_HE_sat; |
| 339 if(float_saturation_multiplier < 0.99) | |
| 340 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 341 if(float_saturation_multiplier > 1.3) | |
| 342 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 343 if(GF_low < 0.19) | |
| 344 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 345 if(GF_low > 1.01) | |
| 346 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 347 if(GF_high < 0.6) | |
| 348 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 349 if(GF_high > 1.01) | |
| 350 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 351 if((N2_ratio + He_ratio) > 0.95) | |
| 352 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 353 if((N2_ratio + He_ratio) < 0.05) | |
| 354 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 355 if(float_deco_distance > 0.25) | |
| 356 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 357 if(char_I_depth_last_deco > 8) | |
| 358 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 359 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 360 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 361 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 362 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 363 if(pres_respiration > 3.0) | |
| 364 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 365 if(pres_surface - pres_respiration > 0.2) | |
| 366 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 367 if(pres_surface < 0.75) | |
| 368 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 369 if(pres_surface > 1.11) | |
| 370 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 371 if(float_desaturation_multiplier < 0.70) | |
| 372 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 373 if(float_desaturation_multiplier > 1.01) | |
| 374 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 375 if(GF_low > GF_high) | |
| 376 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 377 } | |
| 378 | |
| 167 | 379 ////////////////////////////////////////////////////////////////////////////// |
| 380 // DBG - set DBG to end_of_dive | |
| 381 // | |
| 382 static void set_dbg_end_of_dive(void) | |
| 116 | 383 { |
| 384 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 385 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 386 } | |
| 387 | |
| 167 | 388 ////////////////////////////////////////////////////////////////////////////// |
| 389 // DBG - NDL at first 20 m. hit | |
| 390 // | |
| 391 static void check_ndl(void) | |
| 116 | 392 { |
| 167 | 393 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 394 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 395 ) | |
| 116 | 396 { |
| 167 | 397 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 398 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 399 char_O_NDL_at_20mtr = 254; |
| 116 | 400 } |
| 401 } | |
| 402 | |
| 167 | 403 ////////////////////////////////////////////////////////////////////////////// |
| 404 // DBG - multi main during dive | |
| 405 // | |
| 184 | 406 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 407 { |
| 203 | 408 overlay unsigned short temp_DBS = 0; |
| 200 | 409 overlay unsigned char i; // Local loop index. |
| 167 | 410 |
| 116 | 411 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 412 temp_DBS |= DBG_c_gas; | |
| 413 if(DBG_const_ppO2 != const_ppO2) | |
| 414 temp_DBS |= DBG_c_ppO2; | |
| 167 | 415 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 416 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 417 ) | |
| 116 | 418 temp_DBS |= DBG_CdeSAT; |
| 419 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 420 temp_DBS |= DBG_C_MODE; | |
| 421 if(DBG_pres_surface != pres_surface) | |
| 422 temp_DBS |= DBG_C_SURF; | |
| 167 | 423 |
| 424 if( !DBS_HE_sat && !He_ratio) | |
| 339 | 425 for(i = 0; i < NUM_COMP; i++) |
| 426 if(pres_tissue_He[i]) | |
| 116 | 427 temp_DBS |= DBG_HEwoHE; |
| 167 | 428 |
| 225 | 429 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 430 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 431 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 432 temp_DBS |= DBG_C_DGAS; |
| 167 | 433 |
| 116 | 434 if(DBG_float_deco_distance != float_deco_distance) |
| 435 temp_DBS |= DBG_C_DIST; | |
| 436 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 437 temp_DBS |= DBG_C_LAST; | |
| 167 | 438 if( DBG_GF_low != GF_low |
| 439 || DBG_GF_high != GF_high ) | |
| 116 | 440 temp_DBS |= DBG_C_GF; |
| 441 if(pres_respiration > 13.0) | |
| 442 temp_DBS |= DBG_PHIGH; | |
| 443 if(pres_surface - pres_respiration > 0.2) | |
| 444 temp_DBS |= DBG_PLOW; | |
| 445 if(is_post_check) | |
| 446 int_O_DBG_post_bitfield |= temp_DBS; | |
| 447 else | |
| 448 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 449 } | |
| 450 | |
| 167 | 451 ////////////////////////////////////////////////////////////////////////////// |
| 452 // DBG - prior to calc. of dive | |
| 453 // | |
| 454 static void check_pre_dbg(void) | |
| 116 | 455 { |
| 456 check_dbg(0); | |
| 457 } | |
| 458 | |
| 167 | 459 ////////////////////////////////////////////////////////////////////////////// |
| 460 // DBG - after decocalc of dive | |
| 461 // | |
| 462 static void check_post_dbg(void) | |
| 116 | 463 { |
| 464 check_dbg(1); | |
| 465 } | |
| 466 | |
| 165 | 467 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 468 ////////////////////////////////////////////////////////////////////////////// |
| 469 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 470 ////////////////////////////////////////////////////////////////////////////// | |
| 471 ////////////////////////////////////////////////////////////////////////////// | |
| 472 | |
| 235 | 473 ////////////////////////////////////////////////////////////////////////////// |
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474 // Bump to blue-screen when an assert is wrong |
| 235 | 475 #ifdef __DEBUG |
| 476 void assert_failed(PARAMETER short int line) | |
| 477 { | |
| 478 extern void PLED_resetdebugger(void); | |
| 479 extern unsigned short temp10; | |
| 480 | |
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481 temp10 = line; // Show source line number as stack depth. |
| 235 | 482 PLED_resetdebugger(); |
| 483 } | |
| 484 #endif | |
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485 |
| 235 | 486 ////////////////////////////////////////////////////////////////////////////// |
| 487 // When calling C code from ASM context, the data stack pointer and | |
| 488 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
| 489 | |
| 490 #ifdef CROSS_COMPILE | |
| 491 # define RESET_C_STACK | |
| 492 #else | |
| 493 # ifdef __DEBUG | |
| 494 # define RESET_C_STACK fillDataStack(); | |
| 495 void fillDataStack(void) | |
| 496 { | |
| 497 _asm | |
| 498 LFSR 1,C_STACK | |
| 499 MOVLW 0xCC | |
| 500 loop: MOVWF POSTINC1,0 | |
| 501 TSTFSZ FSR1L,0 | |
| 502 BRA loop | |
| 503 | |
| 504 LFSR 1,C_STACK | |
| 505 LFSR 2,C_STACK | |
| 506 _endasm | |
| 507 } | |
| 508 # else | |
| 509 # define RESET_C_STACK \ | |
| 510 _asm \ | |
| 511 LFSR 1, C_STACK \ | |
| 512 LFSR 2, C_STACK \ | |
| 513 _endasm | |
| 514 # endif | |
| 515 #endif | |
| 516 | |
| 517 ////////////////////////////////////////////////////////////////////////////// | |
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518 // Read CF values from the C code. |
| 235 | 519 |
| 203 | 520 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 521 { |
| 184 | 522 #ifdef CROSS_COMPILE |
| 523 extern unsigned short custom_functions[]; | |
| 524 return custom_functions[cf]; | |
| 525 #else | |
| 167 | 526 extern unsigned char hi, lo; |
| 527 extern void getcustom15(); | |
| 528 _asm | |
| 529 movff cf,WREG | |
| 530 call getcustom15,0 | |
| 531 movff lo,PRODL | |
| 532 movff hi,PRODH | |
| 533 _endasm | |
| 184 | 534 #endif |
| 167 | 535 } |
| 536 | |
| 537 ////////////////////////////////////////////////////////////////////////////// | |
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538 // Fast subroutine to read RTC timer 3. |
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539 // Note: result is in 1/32 of msecs. |
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540 static unsigned short tmr3(void) |
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541 { |
| 261 | 542 #ifndef CROSS_COMPILE |
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543 _asm |
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544 movff 0xfb2,PRODL // TMR3L |
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545 movff 0xfb3,PRODH // TMR3H |
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546 _endasm // result in PRODH:PRODL. |
| 261 | 547 #else |
| 548 return 0; | |
| 549 #endif | |
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550 } |
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551 |
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552 ////////////////////////////////////////////////////////////////////////////// |
| 258 | 553 // read buhlmann tables A and B for compatriment ci |
| 554 // | |
| 555 static void read_buhlmann_coefficients(void) | |
| 165 | 556 { |
| 338 | 557 |
| 184 | 558 #ifndef CROSS_COMPILE |
| 167 | 559 // Note: we don't use far rom pointer, because the |
| 338 | 560 // 24 bits is too complex, hence we have to set |
| 167 | 561 // the UPPER page ourself... |
| 562 // --> Set zero if tables are moved to lower pages ! | |
| 563 _asm | |
| 564 movlw 1 | |
| 565 movwf TBLPTRU,0 | |
| 566 _endasm | |
| 184 | 567 #endif |
| 258 | 568 |
| 338 | 569 assert( 0 <= ci && ci < NUM_COMP ); |
| 570 | |
| 571 // Use an interleaved array (AoS) to access coefficients with a | |
| 572 // single addressing. | |
| 573 { | |
| 574 overlay rom const float* ptr = &buhlmann_ab[4*ci]; | |
| 575 var_N2_a = *ptr++; | |
| 576 var_N2_b = *ptr++; | |
| 577 var_He_a = *ptr++; | |
| 578 var_He_b = *ptr++; | |
| 579 } | |
| 167 | 580 |
| 165 | 581 // Check reading consistency: |
| 582 if( (var_N2_a < 0.231) | |
| 583 || (var_N2_a > 1.27) | |
| 584 || (var_N2_b < 0.504) | |
| 585 || (var_N2_b > 0.966) | |
| 586 || (var_He_a < 0.510) | |
| 587 || (var_He_a > 1.75) | |
| 588 || (var_He_b < 0.423) | |
| 589 || (var_He_b > 0.927) | |
| 590 ) | |
| 258 | 591 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; |
| 592 } | |
| 593 | |
| 594 ////////////////////////////////////////////////////////////////////////////// | |
| 595 // read buhlmann tables for compatriment ci | |
| 596 // If period == 0 : 2sec interval | |
| 597 // 1 : 1 min interval | |
| 598 // 2 : 10 min interval. | |
| 599 static void read_buhlmann_times(PARAMETER char period) | |
| 600 { | |
| 601 #ifndef CROSS_COMPILE | |
| 602 // Note: we don't use far rom pointer, because the | |
| 603 // 24 bits is to complex, hence we have to set | |
| 604 // the UPPER page ourself... | |
| 605 // --> Set zero if tables are moved to lower pages ! | |
| 606 _asm | |
| 607 movlw 1 | |
| 608 movwf TBLPTRU,0 | |
| 609 _endasm | |
| 610 #endif | |
| 338 | 611 |
| 612 assert( 0 <= ci && ci < NUM_COMP ); | |
| 258 | 613 |
| 165 | 614 // Integration intervals. |
| 167 | 615 switch(period) |
| 165 | 616 { |
| 617 case 0: //---- 2 sec ----------------------------------------------------- | |
| 338 | 618 { |
| 619 overlay rom const float* ptr = &e2secs[2*ci]; | |
| 620 var_N2_e = *ptr++; | |
| 621 var_He_e = *ptr++; | |
| 622 } | |
| 165 | 623 |
| 624 // Check reading consistency: | |
| 625 if( (var_N2_e < 0.0000363) | |
| 626 || (var_N2_e > 0.00577) | |
| 627 || (var_He_e < 0.0000961) | |
| 628 || (var_He_e > 0.150) | |
| 629 ) | |
| 630 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 631 | |
| 632 break; | |
| 633 | |
| 634 case 1: //---- 1 min ----------------------------------------------------- | |
| 338 | 635 { |
| 636 overlay rom const float* ptr = &e1min[2*ci]; | |
| 637 var_N2_e = *ptr++; | |
| 638 var_He_e = *ptr++; | |
| 639 } | |
| 165 | 640 |
| 641 // Check reading consistency: | |
| 642 if( (var_N2_e < 1.09E-3) | |
| 643 || (var_N2_e > 0.1592) | |
| 644 || (var_He_e < 0.00288) | |
| 645 || (var_He_e > 0.3682) | |
| 646 ) | |
| 647 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 648 | |
| 649 break; | |
| 650 | |
| 651 case 2: //---- 10 min ---------------------------------------------------- | |
| 338 | 652 { |
| 653 overlay rom const float* ptr = &e10min[2*ci]; | |
| 654 var_N2_e = *ptr++; | |
| 655 var_He_e = *ptr++; | |
| 656 } | |
| 165 | 657 |
| 658 // Check reading consistency: | |
| 659 if( (var_N2_e < 0.01085) | |
| 660 || (var_N2_e > 0.82323) | |
| 661 || (var_He_e < 0.02846) | |
| 662 || (var_He_e > 0.98986) | |
| 663 ) | |
| 664 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 665 | |
| 666 break; | |
| 197 | 667 |
| 668 default: | |
| 669 assert(0); // Never go there... | |
| 165 | 670 } |
| 671 } | |
| 672 | |
| 673 ////////////////////////////////////////////////////////////////////////////// | |
|
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674 // calc_nextdecodepth |
| 165 | 675 // |
| 116 | 676 // new in v.102 |
| 165 | 677 // |
| 116 | 678 // INPUT, changing during dive: |
| 192 | 679 // low_depth |
| 167 | 680 // |
| 116 | 681 // INPUT, fixed during dive: |
| 167 | 682 // pres_surface |
| 683 // GF_delta | |
| 684 // GF_high | |
| 685 // GF_low | |
| 171 | 686 // char_I_depth_last_deco |
| 167 | 687 // float_deco_distance |
| 688 // | |
| 241 | 689 // RETURN TRUE iff a stop is needed. |
| 690 // | |
| 116 | 691 // OUTPUT |
| 171 | 692 // locked_GF_step |
| 167 | 693 // temp_depth_limt |
| 192 | 694 // low_depth |
| 167 | 695 // |
| 241 | 696 static unsigned char calc_nextdecodepth(void) |
| 167 | 697 { |
| 241 | 698 //--- Max ascent speed --------------------------------------------------- |
| 699 // Recompute leading gas limit, at current depth: | |
| 317 | 700 overlay float depth = (temp_deco - pres_surface) * BAR_TO_METER; |
| 241 | 701 |
| 702 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
| 302 | 703 overlay float min_depth = (depth > 10.0) ? (depth - 10.0) : 0.0; |
| 241 | 704 |
| 705 // Do we need to stop at current depth ? | |
| 706 overlay unsigned char need_stop = 0; | |
| 707 | |
| 708 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
| 709 | |
| 212 | 710 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 711 if (char_I_deco_model == 1) |
| 712 { | |
| 241 | 713 if( depth >= low_depth ) |
| 192 | 714 sim_limit( GF_low ); |
| 715 else | |
| 716 sim_limit( GF_high - depth * locked_GF_step ); | |
| 717 | |
| 718 // Stops are needed ? | |
| 719 if( sim_lead_tissue_limit > pres_surface ) | |
| 720 { | |
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721 // Compute tolerated depth, for the leading tissue [metre]: |
| 317 | 722 overlay float depth_tol = (sim_lead_tissue_limit - pres_surface) * BAR_TO_METER; |
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723 |
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724 // Deepest stop, in multiples of 3 metres. |
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725 overlay unsigned char first_stop = 3 * (short)(0.99999 + depth_tol * 0.33333 ); |
| 192 | 726 assert( first_stop < 128 ); |
| 171 | 727 |
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728 // Is it a new deepest needed stop ? If yes this is the reference for |
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729 // the varying gradient factor. So reset that: |
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730 if( depth_tol > min_depth && depth_tol > low_depth ) |
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731 { |
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732 // Store the deepest stop depth, as reference for GF_low. |
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733 low_depth = depth_tol; |
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734 locked_GF_step = GF_delta / low_depth; |
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735 } |
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736 |
| 264 | 737 #if defined(__DEBUG) || defined(CROSS_COMPILE) |
| 261 | 738 { |
| 739 // Extra testing code to make sure the first_stop formula | |
| 740 // and rounding provides correct depth: | |
| 317 | 741 overlay float pres_stop = first_stop * METER_TO_BAR |
| 261 | 742 + pres_surface; |
| 743 | |
| 744 // Keep GF_low until a first stop depth is found: | |
| 745 if( first_stop >= low_depth ) | |
| 746 sim_limit( GF_low ); | |
| 747 else | |
| 748 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 749 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 750 sim_limit( GF_high - first_stop * locked_GF_step ); | |
| 751 | |
| 302 | 752 // upper limit (lowest pressure tolerated), + 1mbar for rounding...: |
| 753 assert( sim_lead_tissue_limit < (pres_stop + 0.001) ); | |
| 261 | 754 } |
| 755 #endif | |
| 756 | |
| 212 | 757 // Apply correction for the shallowest stop. |
| 192 | 758 if( first_stop == 3 ) // new in v104 |
| 759 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 760 |
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761 // Because gradient factor at first_stop might be bigger than at |
| 261 | 762 // current depth, we might ascent a bit more. |
| 763 // Hence, check all stops until one is indeed higher than tolerated presure: | |
| 764 while(first_stop > 0) | |
| 192 | 765 { |
| 766 overlay unsigned char next_stop; // Next index (0..30) | |
| 767 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 768 |
| 241 | 769 // Check max speed, or reaching surface. |
| 770 if( first_stop <= min_depth ) | |
| 771 break; | |
| 772 | |
| 773 // So, there is indeed a stop needed: | |
| 774 need_stop = 1; | |
| 775 | |
| 192 | 776 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 777 next_stop = 0; | |
| 216 | 778 else if( first_stop == 6 ) |
| 779 next_stop = char_I_depth_last_deco; | |
| 192 | 780 else |
| 781 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 782 |
| 317 | 783 pres_stop = next_stop * METER_TO_BAR |
| 192 | 784 + pres_surface; |
| 785 | |
| 212 | 786 // Keep GF_low until a first stop depth is found: |
| 787 if( next_stop >= low_depth ) | |
| 788 sim_limit( GF_low ); | |
| 789 else | |
| 790 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 791 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 792 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 793 |
| 192 | 794 // upper limit (lowest pressure tolerated): |
| 795 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 796 break; | |
| 797 | |
| 798 // Else, validate that stop and loop... | |
| 799 first_stop = next_stop; | |
| 212 | 800 } |
| 801 | |
| 802 // next stop is the last validated depth found, aka first_stop | |
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803 temp_depth_limit = first_stop; // Stop depth, in metre. |
| 192 | 804 } |
| 171 | 805 else |
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806 temp_depth_limit = 0; // stop depth, in metre. |
| 116 | 807 } |
| 167 | 808 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 809 { |
| 192 | 810 overlay float pres_gradient; |
| 811 | |
| 812 // Original model | |
| 116 | 813 // optimized in v.101 |
| 171 | 814 // char_I_depth_last_deco included in v.101 |
| 116 | 815 |
| 192 | 816 // Compute sim_lead_tissue_limit too, but just once. |
| 817 sim_limit(1.0); | |
| 818 | |
| 819 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 820 if (pres_gradient >= 0) |
| 116 | 821 { |
| 317 | 822 pres_gradient *= BAR_TO_METER/3; // Bar --> stop number; |
|
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823 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
| 241 | 824 need_stop = 1; // Hit. |
| 825 | |
| 826 // Implement last stop at 4m/5m/6m... | |
| 827 if( temp_depth_limit == 3 ) | |
| 828 temp_depth_limit = char_I_depth_last_deco; | |
| 171 | 829 } |
| 116 | 830 else |
| 241 | 831 temp_depth_limit = 0; |
| 171 | 832 } |
| 212 | 833 |
| 217 | 834 //---- Check gas change -------------------------------------------------- |
| 241 | 835 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
| 836 | |
| 837 return need_stop; | |
| 167 | 838 } |
| 116 | 839 |
| 167 | 840 ////////////////////////////////////////////////////////////////////////////// |
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841 // copy_deco_table |
| 167 | 842 // |
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843 // Buffer the stops, once computed, so we can continue to display them |
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844 // while computing the next set. |
| 167 | 845 // |
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846 static void copy_deco_table(void) |
| 116 | 847 { |
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848 // Copy depth of the first (deepest) stop, because when reversing |
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849 // order, it will be hard to find... |
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850 char_O_first_deco_depth = internal_deco_depth[0] & 0x7F; |
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851 char_O_first_deco_time = internal_deco_time [0]; |
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852 |
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853 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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854 { |
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855 overlay unsigned char x, y; |
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856 |
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857 //---- First: search the first non-null depth |
| 339 | 858 for(x=(NUM_STOPS-1); x != 0; --x) |
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859 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 860 |
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861 //---- Second: copy to output table (in reverse order) |
| 338 | 862 for(y=0; y<NUM_STOPS; y++, --x) |
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863 { |
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864 char_O_deco_depth[y] = internal_deco_depth[x]; |
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865 char_O_deco_time [y] = internal_deco_time [x]; |
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866 |
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867 // Stop only once the last transfer is done. |
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868 if( x == 0 ) break; |
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869 } |
| 116 | 870 |
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871 //---- Third: fill table end with null |
| 339 | 872 for(y++; y<NUM_STOPS; y++) |
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873 { |
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874 char_O_deco_time [y] = 0; |
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875 char_O_deco_depth[y] = 0; |
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876 } |
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877 } |
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878 else //---- Straight copy ------------------------------------------------ |
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879 { |
| 167 | 880 overlay unsigned char x; |
| 881 | |
| 339 | 882 for(x=0; x<NUM_STOPS; x++) |
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883 { |
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884 char_O_deco_depth[x] = internal_deco_depth[x]; |
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885 char_O_deco_time [x] = internal_deco_time [x]; |
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886 } |
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887 } |
| 167 | 888 } |
| 116 | 889 |
| 167 | 890 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 891 // temp_tissue_safety // |
| 167 | 892 // |
| 116 | 893 // outsourced in v.102 |
| 167 | 894 // |
| 895 // Apply safety factors for brand ZH-L16 model. | |
| 896 // | |
| 897 static void temp_tissue_safety(void) | |
| 116 | 898 { |
| 197 | 899 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 900 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 901 | |
| 167 | 902 if( char_I_deco_model == 0 ) |
| 116 | 903 { |
| 904 if (temp_tissue < 0.0) | |
| 126 | 905 temp_tissue *= float_desaturation_multiplier; |
| 116 | 906 else |
| 126 | 907 temp_tissue *= float_saturation_multiplier; |
| 116 | 908 } |
| 167 | 909 } |
| 116 | 910 |
| 167 | 911 ////////////////////////////////////////////////////////////////////////////// |
| 912 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 913 // ** THE JUMP-IN CODE ** |
| 914 // ** for the asm code ** | |
| 167 | 915 ////////////////////////////////////////////////////////////////////////////// |
| 916 ////////////////////////////////////////////////////////////////////////////// | |
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917 |
| 167 | 918 ////////////////////////////////////////////////////////////////////////////// |
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919 // Called every 2 seconds during diving. |
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920 // update tissues every time. |
| 184 | 921 // |
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922 // Every 6 seconds (or slower when TTS > 16): |
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923 // - update deco table (char_O_deco_time/depth) with new values. |
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924 // - update ascent time, |
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925 // - set status to zero (so we can check there is new results). |
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926 // |
| 116 | 927 void deco_calc_hauptroutine(void) |
| 928 { | |
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929 RESET_C_STACK |
| 116 | 930 calc_hauptroutine(); |
| 931 int_O_desaturation_time = 65535; | |
| 932 } | |
| 933 | |
| 167 | 934 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 935 // Reset decompression model: |
| 936 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 937 // + Reset last stop to 0m | |
| 938 // + Reset all model output. | |
| 116 | 939 void deco_clear_tissue(void) |
| 940 { | |
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941 RESET_C_STACK |
| 116 | 942 clear_tissue(); |
| 943 } | |
| 944 | |
| 167 | 945 ////////////////////////////////////////////////////////////////////////////// |
| 278 | 946 // Called every 1 min during decoplanning. |
| 947 // Update tissues for 1 min. | |
| 948 // | |
| 949 void deco_calc_tissue(void) | |
| 950 { | |
| 951 RESET_C_STACK | |
| 952 calc_hauptroutine_update_tissues(); | |
| 953 } | |
| 954 | |
| 955 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 956 |
| 116 | 957 void deco_calc_wo_deco_step_1_min(void) |
| 958 { | |
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959 RESET_C_STACK |
| 116 | 960 calc_wo_deco_step_1_min(); |
| 961 deco_calc_desaturation_time(); | |
| 962 } | |
| 963 | |
| 167 | 964 ////////////////////////////////////////////////////////////////////////////// |
| 965 | |
| 116 | 966 void deco_debug(void) |
| 967 { | |
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968 RESET_C_STACK |
| 116 | 969 } |
| 970 | |
| 241 | 971 |
| 972 ////////////////////////////////////////////////////////////////////////////// | |
| 973 // Find current gas in the list (if any). | |
| 974 // | |
| 975 // Input: char_I_deco_N2_ratio[] and He, to detect breathed gas. | |
| 976 // | |
| 977 // Output: sim_gas_depth_used | |
| 978 // | |
| 979 static void gas_switch_find_current(void) | |
| 980 { | |
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981 overlay unsigned char j; |
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982 overlay unsigned char N2 = (unsigned char)(N2_ratio * 100 + 0.5); |
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983 overlay unsigned char He = (unsigned char)(He_ratio * 100 + 0.5); |
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984 |
| 338 | 985 for(j=0; j<NUM_GAS; ++j) |
| 241 | 986 { |
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987 // Make sure to detect if we are already breathing some gas in |
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988 // the current list (happends when first gas do have a depth). |
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989 if( N2 == char_I_deco_N2_ratio[j] |
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990 && He == char_I_deco_He_ratio[j] |
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991 ) |
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992 { |
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993 if( char_I_deco_gas_change[j] ) |
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994 temp_depth_limit = sim_gas_last_depth = char_I_deco_gas_change[j]; |
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995 sim_gas_last_used = j+1; |
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996 break; |
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997 } |
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998 } |
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999 |
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1000 // If there is no gas-switch-delay running ? |
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1001 if( sim_gas_delay <= sim_dive_mins) |
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1002 { |
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1003 // Compute current depth: |
|
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1004 overlay unsigned char depth = (unsigned char)(0.5 + (pres_respiration - pres_surface) * BAR_TO_METER); |
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1005 assert( depth < 130 ); |
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1006 |
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1007 // And if I'm above the last decostop (with the 3m margin) ? |
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1008 if( (sim_gas_last_depth-3) > depth ) |
| 241 | 1009 { |
| 338 | 1010 for(j=0; j<NUM_GAS; ++j) |
| 241 | 1011 { |
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1012 // And If I am in the range of a valide stop ? |
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1013 // (again, with the same 3m margin) |
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1014 if( char_I_deco_gas_change[j] |
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1015 && depth <= char_I_deco_gas_change[j] |
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1016 && depth >= (char_I_deco_gas_change[j] - 3) |
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1017 ) |
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1018 { |
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1019 // Then start gas-switch timer there, |
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1020 sim_gas_delay = sim_dive_mins |
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1021 + read_custom_function(55); |
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1022 |
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1023 // And make sure decostop will be recorded at the right depth. |
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1024 temp_depth_limit = char_I_deco_gas_change[j]; |
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1025 break; |
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1026 } |
| 241 | 1027 } |
| 1028 } | |
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1029 else |
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1030 // Make clear there is no deay anymore. |
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1031 sim_gas_delay = 0; |
| 241 | 1032 } |
| 1033 } | |
| 1034 | |
| 167 | 1035 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 1036 // Find deepest available gas. |
| 201 | 1037 // |
| 241 | 1038 // Input: temp_depth_limit, |
| 1039 // deco_gas_change[] | |
| 1040 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
| 212 | 1041 // |
| 241 | 1042 // RETURNS TRUE if a stop is needed for gas switch. |
| 1043 // | |
| 1044 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
| 212 | 1045 // |
| 241 | 1046 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
| 1047 // are null), or during the ascent to make sure we are not passing a | |
| 1048 // stop (in which case both can be already set). | |
| 1049 // | |
| 1050 static unsigned char gas_switch_deepest(void) | |
| 201 | 1051 { |
| 241 | 1052 overlay unsigned char switch_deco = 0, switch_last = 0; |
| 201 | 1053 |
| 1054 if (char_I_const_ppO2 == 0) | |
| 1055 { | |
| 225 | 1056 overlay unsigned char j; |
| 1057 | |
| 241 | 1058 // Loop over all enabled gas, to find the deepest one, |
|
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1059 // above last used gas, but below temp_depth_limit. |
| 338 | 1060 for(j=0; j<NUM_GAS; ++j) |
| 225 | 1061 { |
| 241 | 1062 // Gas not (yet) allowed ? Skip ! |
| 1063 if( temp_depth_limit > deco_gas_change[j] ) | |
| 1064 continue; | |
| 1065 | |
| 1066 // Gas deeper than the current/previous one ? Skip ! | |
| 1067 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) | |
| 1068 continue; | |
| 1069 | |
| 1070 // First, or deeper ? | |
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1071 if( switch_deco < deco_gas_change[j] ) |
| 241 | 1072 { |
| 1073 switch_deco = deco_gas_change[j]; | |
| 1074 switch_last = j+1; | |
| 1075 } | |
| 225 | 1076 } |
| 201 | 1077 } |
| 1078 | |
| 203 | 1079 // If there is a better gas available |
| 241 | 1080 if( switch_deco ) |
| 201 | 1081 { |
| 241 | 1082 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
| 201 | 1083 |
| 241 | 1084 // Should restart gas-switch delay only when gas do changes... |
| 1085 assert( sim_gas_delay <= sim_dive_mins ); | |
| 217 | 1086 |
| 241 | 1087 sim_gas_last_depth = switch_deco; |
| 1088 sim_gas_last_used = switch_last; | |
| 1089 sim_gas_delay = read_custom_function(55); | |
| 217 | 1090 |
| 241 | 1091 // Apply depth correction ONLY if CF#55 is not null: |
| 1092 if( sim_gas_delay > 0 ) | |
| 225 | 1093 { |
| 241 | 1094 sim_gas_delay += sim_dive_mins; |
| 1095 temp_depth_limit = switch_deco; | |
| 1096 return 1; | |
| 225 | 1097 } |
| 241 | 1098 |
| 1099 return 0; | |
| 217 | 1100 } |
| 1101 | |
| 241 | 1102 sim_gas_delay = 0; |
| 1103 return 0; | |
| 217 | 1104 } |
| 1105 | |
| 1106 ////////////////////////////////////////////////////////////////////////////// | |
| 1107 // Calculate gas switches | |
| 1108 // | |
| 1109 // | |
| 1110 // Input: N2_ratio, He_ratio. | |
| 1111 // sim_gas_last_used | |
| 1112 // | |
| 1113 // Output: calc_N2_ratio, calc_He_ratio | |
| 1114 // | |
| 241 | 1115 static void gas_switch_set(void) |
| 217 | 1116 { |
| 338 | 1117 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= NUM_GAS ); |
| 217 | 1118 |
| 224 | 1119 if( sim_gas_last_used == 0 ) |
| 1120 { | |
| 1121 calc_N2_ratio = N2_ratio; | |
| 1122 calc_He_ratio = He_ratio; | |
| 1123 } | |
| 1124 else | |
| 1125 { | |
| 1126 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 1127 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 1128 } |
| 201 | 1129 |
| 1130 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 1131 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1132 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1133 } | |
| 1134 | |
| 1135 ////////////////////////////////////////////////////////////////////////////// | |
| 1136 // | |
| 212 | 1137 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 1138 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 276 | 1139 // float_deco_distance : security factor. |
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1140 // Water-vapor pressure inside limbs (ppWater). |
| 212 | 1141 // |
| 236 | 1142 // Output: ppN2, ppHe. |
| 212 | 1143 // |
| 1144 static void sim_alveolar_presures(void) | |
| 201 | 1145 { |
| 212 | 1146 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1147 | |
| 276 | 1148 // Take deco offset into account, but not at surface. |
| 1149 // Note: this should be done on ambiant pressure, hence before | |
| 1150 // computing the diluant partial pressure... | |
| 1151 if( deco_diluent > pres_surface ) | |
| 1152 deco_diluent += float_deco_distance; | |
| 1153 | |
| 212 | 1154 //---- CCR mode : deco gas switch ? -------------------------------------- |
| 276 | 1155 if( char_I_const_ppO2 != 0 ) |
| 201 | 1156 { |
| 276 | 1157 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
| 1158 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
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1159 // ppWater in the equations below: |
| 321 | 1160 deco_diluent -= const_ppO2; |
| 276 | 1161 deco_diluent /= calc_N2_ratio + calc_He_ratio; |
| 212 | 1162 |
| 1163 if (deco_diluent > temp_deco) | |
| 1164 deco_diluent = temp_deco; | |
| 201 | 1165 } |
| 1166 | |
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1167 if( deco_diluent > ppWater ) |
| 201 | 1168 { |
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1169 ppN2 = calc_N2_ratio * (deco_diluent - ppWater); |
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1170 ppHe = calc_He_ratio * (deco_diluent - ppWater); |
| 201 | 1171 } |
| 1172 else | |
| 1173 { | |
| 236 | 1174 ppN2 = 0.0; |
| 201 | 1175 ppHe = 0.0; |
| 1176 } | |
| 236 | 1177 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 1178 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 1179 } | |
| 1180 | |
| 1181 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1182 // clear_tissue |
| 1183 // | |
| 165 | 1184 // optimized in v.101 (var_N2_a) |
| 167 | 1185 // |
| 1186 // preload tissues with standard pressure for the given ambient pressure. | |
| 1187 // Note: fixed N2_ratio for standard air. | |
| 201 | 1188 // |
| 167 | 1189 static void clear_tissue(void) |
| 116 | 1190 { |
| 1191 flag_in_divemode = 0; | |
| 1192 int_O_DBS_bitfield = 0; | |
| 1193 int_O_DBS2_bitfield = 0; | |
| 1194 int_O_DBG_pre_bitfield = 0; | |
| 1195 int_O_DBG_post_bitfield = 0; | |
| 1196 char_O_NDL_at_20mtr = 255; | |
| 1197 | |
| 167 | 1198 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1199 N2_ratio = 0.7902; | |
| 212 | 1200 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1201 |
| 338 | 1202 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 1203 { |
| 197 | 1204 // cycle through the 16 Bühlmann tissues |
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1205 overlay float p = N2_ratio * (pres_respiration - ppWater); |
| 339 | 1206 pres_tissue_N2[ci] = p; |
| 197 | 1207 |
| 1208 // cycle through the 16 Bühlmann tissues for Helium | |
| 339 | 1209 pres_tissue_He[ci] = 0.0; |
| 338 | 1210 } // for 0 to 15 |
| 116 | 1211 |
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1212 clear_deco_table(); |
| 126 | 1213 char_O_deco_status = 0; |
| 1214 char_O_nullzeit = 0; | |
| 168 | 1215 int_O_ascenttime = 0; |
| 126 | 1216 char_O_gradient_factor = 0; |
| 1217 char_O_relative_gradient_GF = 0; | |
| 197 | 1218 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 258 | 1219 |
| 1220 calc_lead_tissue_limit = 0.0; | |
| 1221 char_O_gtissue_no = 0; | |
| 167 | 1222 } |
| 116 | 1223 |
| 167 | 1224 ////////////////////////////////////////////////////////////////////////////// |
| 1225 // calc_hauptroutine | |
| 1226 // | |
| 1227 // this is the major code in dive mode calculates: | |
| 116 | 1228 // the tissues, |
| 167 | 1229 // the bottom time, |
| 1230 // and simulates the ascend with all deco stops. | |
| 171 | 1231 // |
| 1232 // The deco_state sequence is : | |
| 1233 // 3 (at surface) | |
| 1234 // +---> 0 : calc nullzeit | |
| 1235 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1236 // | +-> 1 : simulate up to 16min of stops. | |
| 1237 // | +------< not finished | |
| 1238 // +--------< finish | |
| 1239 // | |
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1240 // Added steps 6,5 for @+5 calculation: |
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1241 // 6 = ascent to first stop (same as 2), except continue to 7 |
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1242 // 7 = same as 1, except loop to 7. |
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1243 // |
| 167 | 1244 static void calc_hauptroutine(void) |
| 116 | 1245 { |
| 241 | 1246 static unsigned char backup_gas_used = 0; |
| 1247 static unsigned char backup_gas_depth = 0; | |
| 217 | 1248 static unsigned char backup_gas_delay = 0; |
| 186 | 1249 |
| 116 | 1250 calc_hauptroutine_data_input(); |
| 1251 | |
| 1252 if(!flag_in_divemode) | |
| 1253 { | |
| 1254 flag_in_divemode = 1; | |
| 1255 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1256 } | |
| 1257 else | |
| 1258 check_pre_dbg(); | |
| 1259 | |
| 1260 calc_hauptroutine_update_tissues(); | |
| 1261 calc_gradient_factor(); | |
| 1262 | |
| 167 | 1263 // toggle between calculation for nullzeit (bottom time), |
| 1264 // deco stops | |
| 1265 // and more deco stops (continue) | |
| 1266 switch( char_O_deco_status ) | |
| 116 | 1267 { |
| 186 | 1268 case 3: //---- At surface: start a new dive ------------------------------ |
| 1269 clear_deco_table(); | |
| 1270 copy_deco_table(); | |
| 200 | 1271 int_O_ascenttime = 0; // Reset DTR. |
| 323 | 1272 int_O_extra_ascenttime = 0; |
| 200 | 1273 char_O_nullzeit = 0; // Reset bottom time. |
| 278 | 1274 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
| 201 | 1275 |
| 217 | 1276 // Values that should be reset just once for the full real dive. |
| 1277 // This is used to record the lowest stop for the whole dive, | |
| 1278 // Including ACCROSS all simulated ascent. | |
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1279 low_depth = 0.0; |
| 217 | 1280 |
| 1281 // Reset gas switch history. | |
| 241 | 1282 backup_gas_used = sim_gas_last_used = 0; |
| 1283 backup_gas_depth = sim_gas_last_depth = 0; | |
| 217 | 1284 backup_gas_delay = sim_gas_delay = 0; |
| 203 | 1285 sim_dive_mins = 0; |
| 1286 break; | |
| 186 | 1287 |
| 167 | 1288 case 0: //---- bottom time ----------------------------------------------- |
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1289 default: |
| 167 | 1290 calc_nullzeit(); |
| 1291 check_ndl(); | |
| 186 | 1292 char_O_deco_status = 2; // calc ascent next time. |
| 1293 break; | |
| 1294 | |
| 1295 case 2: //---- Simulate ascent to first stop ----------------------------- | |
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1296 case 6: // @+5min variation |
| 203 | 1297 // Check proposed gas at begin of ascent simulation |
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1298 sim_dive_mins = int_I_divemins; // Init current time. |
| 241 | 1299 |
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1300 gas_switch_find_current(); // Lookup for current gas & time. |
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1301 gas_switch_set(); // setup calc_ratio's |
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1302 |
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1303 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1304 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
| 203 | 1305 backup_gas_delay = sim_gas_delay; |
| 186 | 1306 |
| 1307 sim_ascent_to_first_stop(); | |
| 201 | 1308 |
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1309 // Calc stops next time (deco or gas switch). |
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1310 char_O_deco_status = 1 | ( char_O_deco_status & 4 ); |
| 167 | 1311 break; |
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1312 |
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1313 case 1: //---- Simulate stops -------------------------------------------- |
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1314 case 5: // @+5 variation. |
| 167 | 1315 calc_hauptroutine_calc_deco(); |
| 186 | 1316 |
| 1317 // If simulation is finished, restore the GF low reference, so that | |
| 1318 // next ascent simulation is done from the current depth: | |
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1319 if( (char_O_deco_status & 3) == 0 ) |
| 186 | 1320 { |
| 241 | 1321 sim_gas_last_used = backup_gas_used; |
| 1322 sim_gas_last_depth = backup_gas_depth; | |
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1323 sim_gas_delay = backup_gas_delay; |
| 186 | 1324 } |
| 167 | 1325 break; |
| 116 | 1326 } |
| 167 | 1327 |
| 116 | 1328 check_post_dbg(); |
| 1329 } | |
| 1330 | |
| 167 | 1331 ////////////////////////////////////////////////////////////////////////////// |
| 1332 // calc_hauptroutine_data_input | |
| 1333 // | |
| 1334 // Reset all C-code dive parameters from their ASM-code values. | |
| 1335 // Detect gas change condition. | |
| 1336 // | |
| 116 | 1337 void calc_hauptroutine_data_input(void) |
| 1338 { | |
| 203 | 1339 overlay short int_temp; |
| 126 | 1340 |
| 197 | 1341 pres_respiration = int_I_pres_respiration * 0.001; |
| 1342 pres_surface = int_I_pres_surface * 0.001; | |
| 1343 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1344 He_ratio = char_I_He_ratio * 0.01; | |
| 1345 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1346 |
| 126 | 1347 // ____________________________________________________ |
| 1348 // | |
| 1349 // _____________ G A S _ C H A N G E S ________________ | |
| 1350 // ____________________________________________________ | |
| 1351 | |
| 212 | 1352 // Keep a margin of 150mbar = 1.50m |
| 1353 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1354 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1355 |
| 225 | 1356 deco_gas_change[0] = 0; |
| 1357 deco_gas_change[1] = 0; | |
| 1358 deco_gas_change[2] = 0; | |
| 1359 deco_gas_change[3] = 0; | |
| 1360 deco_gas_change[4] = 0; | |
| 116 | 1361 |
| 203 | 1362 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1363 if(char_I_deco_gas_change[0]) |
| 126 | 1364 { |
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1365 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1366 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1367 } |
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1368 if(char_I_deco_gas_change[1]) |
| 126 | 1369 { |
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1370 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1371 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1372 } |
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1373 if(char_I_deco_gas_change[2]) |
| 126 | 1374 { |
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1375 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1376 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1377 } |
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1378 if(char_I_deco_gas_change[3]) |
| 126 | 1379 { |
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1380 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1381 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1382 } |
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1383 if(char_I_deco_gas_change[4]) |
| 126 | 1384 { |
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1385 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1386 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1387 } |
| 116 | 1388 |
| 197 | 1389 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1390 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1391 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1392 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1393 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1394 GF_delta = GF_high - GF_low; |
| 116 | 1395 } |
| 1396 | |
| 167 | 1397 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1398 // |
| 1399 // | |
| 116 | 1400 void calc_hauptroutine_update_tissues(void) |
| 1401 { | |
| 197 | 1402 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1403 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1404 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1405 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1406 |
| 276 | 1407 pres_diluent = pres_respiration; |
| 307 | 1408 if( char_I_const_ppO2 != 0 ) // new in v.101 |
| 186 | 1409 { |
| 322 | 1410 overlay float flush_ppO2 = pres_respiration * (1.0 - N2_ratio - He_ratio); |
| 1411 | |
| 276 | 1412 pres_diluent -= const_ppO2; // new in v.101 |
| 1413 pres_diluent /= N2_ratio + He_ratio; // new in v.101 | |
| 321 | 1414 if( pres_diluent < 0.0 ) |
| 1415 pres_diluent = 0.0; | |
| 276 | 1416 if( pres_diluent > pres_respiration ) // new in v.101 |
| 1417 pres_diluent = pres_respiration; // new in v.101 | |
| 307 | 1418 |
| 321 | 1419 char_O_diluent = (unsigned char)(pres_diluent/pres_respiration*100.0 + 0.5); |
| 322 | 1420 |
| 326 | 1421 if( flush_ppO2 > 2.545) flush_ppO2 = 2.55; |
| 322 | 1422 if( flush_ppO2 < 0.0 ) flush_ppO2 = 0.0; |
| 1423 char_O_flush_ppO2 = (unsigned char)(flush_ppO2*100.0 + 0.5); | |
| 186 | 1424 } |
| 307 | 1425 |
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1426 if( pres_diluent > ppWater ) // new in v.101 |
| 116 | 1427 { |
| 307 | 1428 overlay float EAD, END; |
| 1429 | |
|
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1430 ppN2 = N2_ratio * (pres_diluent - ppWater); // changed in v.101 |
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1431 ppHe = He_ratio * (pres_diluent - ppWater); // changed in v.101 |
| 307 | 1432 |
| 1433 // EAD : Equivalent Air Dive. Equivalent depth for the same N2 level | |
| 1434 // with plain air. | |
|
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1435 // ppN2 = 79% * (P_EAD - ppWater) |
| 307 | 1436 // EAD = (P_EAD - Psurface) * 10 |
|
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1437 // ie: EAD = (ppN2 / 0.7902 + ppWater -Psurface) * 10 |
| 317 | 1438 EAD = (ppN2 / 0.7902 + ppWater - pres_surface) * BAR_TO_METER; |
| 307 | 1439 if( EAD < 0.0 || EAD > 245.5 ) EAD = 0.0; |
| 317 | 1440 char_O_EAD = (unsigned char)(EAD + 0.5); |
| 307 | 1441 |
| 1442 // END : Equivalent Narcotic Dive. | |
| 1443 // Here we count O2 as narcotic too. Hence everything but helium (has a narcosis factor of | |
| 1444 // 0.23 btw). Hence the formula becomes: | |
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1445 // END * BarPerMeter * (1.0 - 0.0) - ppWater + Psurface == Pambient - ppHe - ppWater |
| 317 | 1446 // ie: END = (Pambient - ppHe - Psurface) * BAR_TO_METER |
| 307 | 1447 // |
| 1448 // Source cited: | |
| 1449 // The Physiology and Medicine of Diving by Peter Bennett and David Elliott, | |
| 1450 // 4th edition, 1993, W.B.Saunders Company Ltd, London. | |
| 317 | 1451 END = (pres_respiration - ppHe - pres_surface) * BAR_TO_METER; |
| 307 | 1452 if( END < 0.0 || END > 245.5 ) END = 0.0; |
| 317 | 1453 char_O_END = (unsigned char)(END + 0.5); |
| 116 | 1454 } |
| 167 | 1455 else // new in v.101 |
| 116 | 1456 { |
| 236 | 1457 ppN2 = 0.0; // new in v.101 |
| 200 | 1458 ppHe = 0.0; // new in v.101 |
| 307 | 1459 char_O_EAD = char_O_END = 0; |
| 116 | 1460 } |
| 1461 | |
| 1462 if(!char_I_step_is_1min) | |
| 192 | 1463 calc_tissue(0); |
| 116 | 1464 else |
| 192 | 1465 calc_tissue(1); |
| 186 | 1466 |
| 192 | 1467 // Calc limit for surface, ie. GF_high. |
| 258 | 1468 calc_limit(); |
| 186 | 1469 |
| 203 | 1470 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 339 | 1471 int_O_gtissue_press = (short)((pres_tissue_N2[char_O_gtissue_no] + pres_tissue_He[char_O_gtissue_no]) * 1000); |
| 192 | 1472 |
| 1473 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1474 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1475 { |
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1476 char_O_nullzeit = 0; // deco necessary |
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1477 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1478 } |
| 171 | 1479 } |
| 1480 | |
| 116 | 1481 |
| 167 | 1482 ////////////////////////////////////////////////////////////////////////////// |
|
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1483 // Compute stops. |
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1484 // |
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1485 // Note: because this can be very long, break on 16 iterations, and set state |
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1486 // to 0 when finished, or to 1 when needing to continue. |
|
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1487 // Note: because each iteration might be very long too (~ 66 ms in 1.84beta), |
|
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1488 // break the loop when total time > 512msec. |
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1489 // |
| 116 | 1490 void calc_hauptroutine_calc_deco(void) |
| 1491 { | |
|
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1492 overlay unsigned char loop; |
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1493 |
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1494 for(loop = 0; loop < 16; ++loop) |
| 116 | 1495 { |
|
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1496 // Limit loops to 512ms, using the RTC timer 3: |
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1497 if( tmr3() & (512*32) ) |
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1498 break; |
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1499 |
| 241 | 1500 // Do not ascent while doing a gas switch ? |
| 203 | 1501 if( sim_gas_delay <= sim_dive_mins ) |
| 1502 { | |
| 241 | 1503 if( calc_nextdecodepth() ) |
| 1504 { | |
| 1505 if( temp_depth_limit == 0 ) | |
| 1506 goto Surface; | |
| 116 | 1507 |
| 241 | 1508 //---- We hit a stop at temp_depth_limit --------------------- |
| 317 | 1509 temp_deco = temp_depth_limit * METER_TO_BAR // Convert to relative bar, |
| 241 | 1510 + pres_surface; // To absolute. |
| 1511 update_deco_table(); // Adds a one minute stops. | |
| 1512 } | |
| 1513 else | |
| 1514 { | |
| 1515 //---- No stop ----------------------------------------------- | |
| 317 | 1516 temp_deco -= (10*METER_TO_BAR); // Ascend 10m, no wait. |
|
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1517 |
| 241 | 1518 //---- Finish computations once surface is reached ----------- |
| 1519 if( temp_deco <= pres_surface ) | |
| 1520 { | |
| 1521 Surface: | |
|
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1522 if( char_O_deco_status == 1 ) // Don't in @+5min variant. |
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1523 copy_deco_table(); |
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1524 |
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1525 calc_ascenttime(); |
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1526 char_O_deco_status = 0; // calc nullzeit next time. |
| 323 | 1527 char_O_deco_last_stop = 0; // Surface reached (to animate menu) |
| 241 | 1528 return; |
| 1529 } | |
| 1530 } | |
| 212 | 1531 } |
| 1532 else | |
|
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1533 { |
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1534 // Note: if loop==0, temp_depth_limit might not be already set here. |
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1535 temp_depth_limit = (int)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
| 241 | 1536 update_deco_table(); // Just pass one minute. |
|
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1537 } |
| 197 | 1538 |
| 241 | 1539 //---- Then update tissue -------------------------------------------- |
| 203 | 1540 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1541 gas_switch_set(); // Apply any simulated gas change, once validated. |
| 212 | 1542 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1543 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1544 } |
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1545 |
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1546 // Surface not reached, need more stops... |
| 278 | 1547 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
| 116 | 1548 } |
| 1549 | |
| 167 | 1550 ////////////////////////////////////////////////////////////////////////////// |
|
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1551 // Simulation ascention to first deco stop. |
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1552 // |
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1553 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1554 // there is no need to break on more that 16 iterations |
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1555 // (or we are already in deep shit). |
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1556 // |
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1557 // Input: pres_respiration |
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1558 // Output: temp_deco |
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1559 // |
|
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1560 // if char_O_deco_status indicate @+5 variant, add extra time at current depth, |
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1561 // before ascent. |
|
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1562 void sim_ascent_to_first_stop(void) |
| 116 | 1563 { |
| 171 | 1564 update_startvalues(); |
|
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1565 clear_deco_table(); |
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1566 |
| 200 | 1567 temp_deco = pres_respiration; // Starts from current real depth. |
|
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1568 |
|
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1569 // Are we doing the special @+5min variation ? |
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1570 if(char_O_deco_status & 4) |
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1571 sim_extra_time(); |
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1572 |
| 212 | 1573 // Do we have a gas switch going on ? |
| 1574 if( sim_gas_delay > sim_dive_mins ) | |
| 1575 return; | |
| 1576 | |
| 241 | 1577 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1578 for(;;) |
| 116 | 1579 { |
| 241 | 1580 // Try ascending 1 full minute. |
| 317 | 1581 temp_deco -= 10*METER_TO_BAR; // 1 min, at 10m/min. ~ 1bar. |
| 203 | 1582 |
| 212 | 1583 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1584 sim_limit(GF_low); | |
| 1585 | |
| 1586 // Did we reach deepest remaining stop ? | |
| 241 | 1587 if( temp_deco < sim_lead_tissue_limit ) |
| 212 | 1588 { |
| 317 | 1589 temp_deco += 10*METER_TO_BAR; // Restore last correct depth, |
| 1590 break; // End fast ascent. | |
| 212 | 1591 } |
| 1592 | |
| 203 | 1593 // Did we reach surface ? |
| 1594 if( temp_deco <= pres_surface ) | |
| 1595 { | |
| 1596 temp_deco = pres_surface; // Yes: finished ! | |
| 1597 break; | |
| 1598 } | |
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1599 |
| 241 | 1600 // Check for gas change below new depth ? |
|
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1601 temp_depth_limit = (int)(0.5 + (temp_deco - pres_surface) * BAR_TO_METER); |
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1602 assert( temp_depth_limit > 0); |
| 241 | 1603 |
| 1604 if( gas_switch_deepest() ) | |
| 1605 { | |
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1606 assert( temp_depth_limit > 0); |
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1607 |
| 317 | 1608 temp_deco = temp_depth_limit * METER_TO_BAR + pres_surface; |
| 212 | 1609 break; |
| 241 | 1610 } |
| 171 | 1611 |
| 203 | 1612 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1613 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
| 203 | 1614 sim_tissue(1); // and update tissues for 1 min. |
| 1615 } | |
| 167 | 1616 } |
| 116 | 1617 |
| 167 | 1618 ////////////////////////////////////////////////////////////////////////////// |
|
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1619 // Simulation extra time at the current depth. |
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1620 // |
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1621 // This routine is used for @+5min feature. |
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1622 void sim_extra_time(void) |
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1623 { |
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1624 overlay unsigned char extra = read_custom_function(58); |
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1625 do { |
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1626 sim_dive_mins++; // Advance simulated time by 1 minute. |
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1627 sim_tissue(1); // and update tissues for 1 min. |
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1628 } while( --extra != 0 ); |
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1629 } |
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1630 |
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1631 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 1632 // calc_tissue |
| 1633 // | |
| 116 | 1634 // optimized in v.101 |
| 167 | 1635 // |
| 184 | 1636 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1637 { |
| 251 | 1638 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1639 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1640 |
| 338 | 1641 for (ci=0;ci<NUM_COMP;ci++) |
| 126 | 1642 { |
| 258 | 1643 read_buhlmann_times(period); // 2 sec or 1 min period. |
| 116 | 1644 |
| 126 | 1645 // N2 |
| 339 | 1646 temp_tissue = (ppN2 - pres_tissue_N2[ci]) * var_N2_e; |
| 126 | 1647 temp_tissue_safety(); |
| 339 | 1648 pres_tissue_N2[ci] += temp_tissue; |
| 165 | 1649 |
| 126 | 1650 // He |
| 339 | 1651 temp_tissue = (ppHe - pres_tissue_He[ci]) * var_He_e; |
| 126 | 1652 temp_tissue_safety(); |
| 339 | 1653 pres_tissue_He[ci] += temp_tissue; |
| 192 | 1654 } |
| 167 | 1655 } |
| 116 | 1656 |
| 167 | 1657 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1658 // calc_limit |
| 167 | 1659 // |
| 192 | 1660 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1661 // |
| 258 | 1662 static void calc_limit(void) |
| 167 | 1663 { |
| 192 | 1664 char_O_gtissue_no = 255; |
| 1665 calc_lead_tissue_limit = 0.0; | |
| 1666 | |
| 338 | 1667 for(ci=0; ci<NUM_COMP;ci++) |
| 192 | 1668 { |
| 339 | 1669 overlay float N2 = pres_tissue_N2[ci]; |
| 1670 overlay float He = pres_tissue_He[ci]; | |
|
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1671 overlay float p = N2 + He; |
| 192 | 1672 |
| 258 | 1673 read_buhlmann_coefficients(); |
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1674 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1675 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
| 116 | 1676 |
| 192 | 1677 // Apply the Eric Baker's varying gradient factor correction. |
| 1678 // Note: the correction factor depends both on GF and b, | |
| 1679 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1680 // so that can change who is the leading gas... | |
| 1681 // Note: Also depends of the GF. So the calcul is different for | |
| 1682 // GF_low, current GF, or GF_high... | |
| 1683 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1684 // hence what would happend at surface, | |
| 1685 // hence at GF_high. | |
| 1686 if( char_I_deco_model == 1 ) | |
| 258 | 1687 p = ( p - var_N2_a * GF_high) * var_N2_b |
| 1688 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
| 192 | 1689 else |
| 1690 p = (p - var_N2_a) * var_N2_b; | |
| 258 | 1691 if( p < 0.0 ) p = 0.0; |
| 192 | 1692 |
| 1693 if( p > calc_lead_tissue_limit ) | |
| 1694 { | |
| 1695 char_O_gtissue_no = ci; | |
| 1696 calc_lead_tissue_limit = p; | |
| 1697 } | |
| 1698 } | |
| 197 | 1699 |
| 338 | 1700 assert( char_O_gtissue_no < NUM_COMP ); |
| 197 | 1701 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); |
| 167 | 1702 } |
| 1703 | |
| 1704 ////////////////////////////////////////////////////////////////////////////// | |
| 1705 // calc_nullzeit | |
| 1706 // | |
| 1707 // calculates the remaining bottom time | |
| 1708 // | |
| 1709 // unchanged in v.101 | |
| 1710 // | |
| 1711 static void calc_nullzeit(void) | |
| 1712 { | |
| 203 | 1713 overlay unsigned char loop; |
| 200 | 1714 update_startvalues(); |
| 167 | 1715 |
| 116 | 1716 char_O_nullzeit = 0; |
| 167 | 1717 for(loop = 1; loop <= 17; loop++) |
| 116 | 1718 { |
| 1719 backup_sim_pres_tissue(); | |
| 197 | 1720 sim_tissue(2); // 10 min. |
| 192 | 1721 sim_limit(GF_high); |
| 167 | 1722 |
| 192 | 1723 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1724 { |
| 1725 restore_sim_pres_tissue(); | |
| 1726 break; | |
| 1727 } | |
| 1728 // Validate once we know its good. | |
| 1729 char_O_nullzeit += 10; | |
| 167 | 1730 } |
| 1731 | |
| 116 | 1732 if (char_O_nullzeit < 60) |
| 1733 { | |
| 167 | 1734 for(loop=1; loop <= 10; loop++) |
| 116 | 1735 { |
| 197 | 1736 sim_tissue(1); // 1 min |
| 192 | 1737 sim_limit(GF_high); |
| 1738 | |
| 1739 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1740 break; |
| 1741 char_O_nullzeit++; | |
| 167 | 1742 } |
| 185 | 1743 } |
| 1744 } | |
| 116 | 1745 |
| 167 | 1746 ////////////////////////////////////////////////////////////////////////////// |
| 1747 // backup_sim_pres_tissue | |
| 1748 // | |
| 116 | 1749 void backup_sim_pres_tissue(void) |
| 1750 { | |
| 167 | 1751 overlay unsigned char x; |
| 1752 | |
| 339 | 1753 for(x=0; x<NUM_COMP; x++) |
| 1754 { | |
| 1755 sim_pres_tissue_backup_N2[x] = sim_pres_tissue_N2[x]; | |
| 1756 sim_pres_tissue_backup_He[x] = sim_pres_tissue_He[x]; | |
| 1757 } | |
| 167 | 1758 } |
| 116 | 1759 |
| 167 | 1760 ////////////////////////////////////////////////////////////////////////////// |
| 1761 // restore_sim_pres_tissue | |
| 1762 // | |
| 116 | 1763 void restore_sim_pres_tissue(void) |
| 1764 { | |
| 167 | 1765 overlay unsigned char x; |
| 1766 | |
| 339 | 1767 for(x=0; x<NUM_COMP; x++) |
| 1768 { | |
| 1769 sim_pres_tissue_N2[x] = sim_pres_tissue_backup_N2[x]; | |
| 1770 sim_pres_tissue_He[x] = sim_pres_tissue_backup_He[x]; | |
| 1771 } | |
| 167 | 1772 } |
| 116 | 1773 |
| 167 | 1774 ////////////////////////////////////////////////////////////////////////////// |
| 1775 // calc_ascenttime | |
| 1776 // | |
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1777 // Summup ascent from bottom to surface, at 1 bar/min, 1min for last 3 meters, |
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1778 // and all stops. |
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1779 // |
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1780 // Result in int_O_ascenttime, or int_O_extra_ascenttime if in @+5min variant. |
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1781 static void calc_ascenttime(void) |
| 116 | 1782 { |
| 323 | 1783 overlay unsigned char x; |
| 1784 overlay unsigned short sum; | |
| 168 | 1785 |
| 323 | 1786 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
| 1787 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
| 1788 if (ascent < 0.0) | |
| 1789 ascent = 0.0; | |
| 1790 sum = (unsigned short)(ascent + 0.99); | |
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1791 |
| 338 | 1792 for(x=0; x<NUM_STOPS && internal_deco_depth[x]; x++) |
| 323 | 1793 sum += (unsigned short)internal_deco_time[x]; |
| 1794 | |
| 1795 if( char_O_deco_status == 1 ) | |
| 1796 int_O_ascenttime = sum; | |
| 126 | 1797 else |
| 323 | 1798 int_O_extra_ascenttime = sum; |
| 167 | 1799 } |
| 116 | 1800 |
| 167 | 1801 ////////////////////////////////////////////////////////////////////////////// |
| 1802 // update_startvalues | |
| 1803 // | |
| 116 | 1804 // updated in v.102 |
| 167 | 1805 // |
| 116 | 1806 void update_startvalues(void) |
| 1807 { | |
| 167 | 1808 overlay unsigned char x; |
| 116 | 1809 |
| 201 | 1810 // Start ascent simulation with current tissue partial pressures. |
| 339 | 1811 for(x=0; x<NUM_COMP; x++) |
| 116 | 1812 { |
| 339 | 1813 sim_pres_tissue_N2[x] = pres_tissue_N2[x]; |
| 1814 sim_pres_tissue_He[x] = pres_tissue_He[x]; | |
| 116 | 1815 } |
| 197 | 1816 |
| 201 | 1817 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1818 sim_lead_tissue_limit = 0.0; |
| 1819 sim_lead_tissue_no = 255; | |
| 167 | 1820 } |
| 116 | 1821 |
| 167 | 1822 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1823 // sim_tissue |
| 167 | 1824 // |
| 116 | 1825 // optimized in v.101 |
| 167 | 1826 // |
| 1827 // Function very simular to calc_tissue, but: | |
| 1828 // + Use a 1min or 10min period. | |
| 1829 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1830 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1831 { |
| 251 | 1832 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1833 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1834 |
| 338 | 1835 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 1836 { |
| 258 | 1837 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
| 165 | 1838 |
| 126 | 1839 // N2 |
| 339 | 1840 temp_tissue = (ppN2 - sim_pres_tissue_N2[ci]) * var_N2_e; |
| 126 | 1841 temp_tissue_safety(); |
| 339 | 1842 sim_pres_tissue_N2[ci] += temp_tissue; |
| 126 | 1843 |
| 1844 // He | |
| 339 | 1845 temp_tissue = (ppHe - sim_pres_tissue_He[ci]) * var_He_e; |
| 126 | 1846 temp_tissue_safety(); |
| 339 | 1847 sim_pres_tissue_He[ci] += temp_tissue; |
| 192 | 1848 } |
| 167 | 1849 } |
| 116 | 1850 |
| 167 | 1851 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1852 // sim_limit() |
| 1853 // | |
| 1854 // New in v.111 | |
| 1855 // | |
| 1856 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1857 // different depth, because it depends on current gradient factor. | |
| 167 | 1858 // |
| 192 | 1859 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1860 { |
| 212 | 1861 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1862 | |
| 192 | 1863 sim_lead_tissue_limit = 0.0; |
| 212 | 1864 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1865 |
| 338 | 1866 for(ci=0; ci<NUM_COMP; ci++) |
| 192 | 1867 { |
| 339 | 1868 overlay float N2 = sim_pres_tissue_N2[ci]; |
| 1869 overlay float He = sim_pres_tissue_He[ci]; | |
| 241 | 1870 overlay float p = N2 + He; |
| 192 | 1871 |
| 258 | 1872 read_buhlmann_coefficients(); |
| 241 | 1873 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
| 1874 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 192 | 1875 |
| 1876 // Apply the Eric Baker's varying gradient factor correction. | |
| 1877 // Note: the correction factor depends both on GF and b, | |
| 1878 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1879 // so that can change who is the leading gas... | |
| 1880 // Note: Also depends of the GF_current... | |
| 1881 if( char_I_deco_model == 1 ) | |
| 302 | 1882 p = ( p - var_N2_a * GF_current) |
| 1883 / (GF_current / var_N2_b + 1.0 - GF_current); | |
| 192 | 1884 else |
| 1885 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1886 if( p < 0.0 ) p = 0.0; |
| 192 | 1887 |
| 1888 if( p > sim_lead_tissue_limit ) | |
| 1889 { | |
| 1890 sim_lead_tissue_no = ci; | |
| 1891 sim_lead_tissue_limit = p; | |
| 1892 } | |
| 1893 } // for ci | |
| 197 | 1894 |
| 338 | 1895 assert( sim_lead_tissue_no < NUM_COMP ); |
| 237 | 1896 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1897 } |
| 116 | 1898 |
| 167 | 1899 ////////////////////////////////////////////////////////////////////////////// |
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1900 // clear_deco_table |
| 167 | 1901 // |
| 1902 // unchanged in v.101 | |
| 1903 // | |
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1904 static void clear_deco_table(void) |
| 116 | 1905 { |
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1906 overlay unsigned char x; |
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1907 |
| 338 | 1908 for(x=0; x<NUM_STOPS; ++x) |
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1909 { |
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1910 internal_deco_time [x] = 0; |
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1911 internal_deco_depth[x] = 0; |
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1912 } |
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1913 } |
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1914 |
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1915 ////////////////////////////////////////////////////////////////////////////// |
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1916 // update_deco_table |
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1917 // |
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1918 // Add 1 min to current stop. |
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1919 // |
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1920 // Inputs: |
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1921 // temp_depth_limit = stop's depth, in meters. |
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1922 // In/Out: |
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1923 // internal_deco_depth[] : depth (in metres) of each stops. |
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1924 // internal_deco_time [] : time (in minutes) of each stops. |
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1925 // |
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1926 static void update_deco_table() |
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1927 { |
| 192 | 1928 overlay unsigned char x; |
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1929 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1930 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1931 |
| 338 | 1932 for(x=0; x<NUM_STOPS; ++x) |
| 192 | 1933 { |
| 212 | 1934 // Make sure deco-stops are recorded in order: |
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1935 assert( !internal_deco_depth[x] || temp_depth_limit <= (internal_deco_depth[x]& 0x7F) ); |
| 212 | 1936 |
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1937 if( (internal_deco_depth[x] & 0x7F) == temp_depth_limit ) |
| 192 | 1938 { |
| 1939 // Do not overflow (max 255') | |
| 1940 if( internal_deco_time[x] < 255 ) | |
| 1941 { | |
| 1942 internal_deco_time[x]++; | |
| 1943 return; | |
| 1944 } | |
| 1945 // But store extra in the next stop... | |
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1946 } |
| 192 | 1947 |
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1948 if( internal_deco_depth[x] == 0 ) |
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1949 { |
| 192 | 1950 internal_deco_depth[x] = temp_depth_limit; |
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1951 if( sim_gas_delay > sim_dive_mins ) |
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1952 internal_deco_depth[x] |= 0x80; |
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1953 |
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1954 internal_deco_time[x] = 1; |
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1955 return; |
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1956 } |
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1957 } |
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1958 |
| 192 | 1959 // Can't store stops at more than 96m. |
| 1960 // Or stops at less that 3m too. | |
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1961 // Just do nothing with that... |
| 167 | 1962 } |
| 116 | 1963 |
| 167 | 1964 ////////////////////////////////////////////////////////////////////////////// |
| 1965 // calc_gradient_factor | |
| 1966 // | |
| 165 | 1967 // optimized in v.101 (var_N2_a) |
| 116 | 1968 // new code in v.102 |
| 167 | 1969 // |
| 1970 static void calc_gradient_factor(void) | |
| 116 | 1971 { |
| 197 | 1972 overlay float gf; |
| 339 | 1973 overlay float N2 = pres_tissue_N2[char_O_gtissue_no]; |
| 1974 overlay float He = pres_tissue_He[char_O_gtissue_no]; | |
| 237 | 1975 |
| 338 | 1976 assert( char_O_gtissue_no < NUM_COMP ); |
| 237 | 1977 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1978 |
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1979 // tissue > respiration (currently off-gasing) |
| 302 | 1980 // GF = 0% when respiration == tissue, ie. bubbles are at equilibrium. |
| 1981 // GF = 100% when respiration == limit. | |
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1982 temp_tissue = N2 + He; |
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1983 if( temp_tissue <= pres_respiration ) |
| 197 | 1984 gf = 0.0; |
| 1985 else | |
| 1986 { | |
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1987 overlay float limit = calc_lead_tissue_limit; |
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1988 // NOTE: in GF model, calc_lead_tissue_limit include already the |
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1989 // correction due to gradient factor. To compute the actual |
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1990 // current GF, we need to (re-)compute the raw ambiant-pressure |
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1991 // limit from the Bühlmann model. |
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1992 if( char_I_deco_model == 1 ) |
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1993 { |
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1994 ci = char_O_gtissue_no; |
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1995 read_buhlmann_coefficients(); |
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1996 var_N2_a = (var_N2_a * N2 + var_He_a * He) / temp_tissue; |
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1997 var_N2_b = (var_N2_b * N2 + var_He_b * He) / temp_tissue; |
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1998 limit = (temp_tissue - var_N2_a) * var_N2_b; |
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1999 } |
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2000 |
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2001 gf = (temp_tissue - pres_respiration) |
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2002 / (temp_tissue - limit) |
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2003 * 100.0; |
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2004 if( gf > 254.5 ) gf = 255.0; |
| 197 | 2005 if( gf < 0.0 ) gf = 0.0; |
| 2006 } | |
|
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2007 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
| 116 | 2008 |
| 2009 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 2010 { | |
| 197 | 2011 overlay float rgf; |
| 2012 | |
|
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2013 if( low_depth < 1.5 ) |
| 197 | 2014 rgf = GF_high; |
| 2015 else | |
| 2016 { | |
| 317 | 2017 overlay float temp1 = low_depth * METER_TO_BAR; |
| 197 | 2018 overlay float temp2 = pres_respiration - pres_surface; |
| 186 | 2019 |
| 197 | 2020 if (temp2 <= 0) |
| 2021 rgf = GF_high; | |
| 2022 else if (temp2 >= temp1) | |
| 2023 rgf = GF_low; | |
| 2024 else | |
| 2025 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 2026 } | |
| 186 | 2027 |
| 197 | 2028 rgf = gf / rgf; // gf is already in percent |
| 2029 if( rgf < 0.0 ) rgf = 0.0; | |
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2030 if( rgf > 254.5 ) rgf = 255.0; |
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2031 char_O_relative_gradient_GF = (unsigned char)(rgf+0.5f); |
| 116 | 2032 } // calc relative gradient factor |
| 2033 else | |
| 2034 { | |
| 186 | 2035 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 2036 } |
| 167 | 2037 } |
| 116 | 2038 |
| 167 | 2039 ////////////////////////////////////////////////////////////////////////////// |
| 2040 // deco_calc_desaturation_time | |
| 2041 // | |
| 116 | 2042 // FIXED N2_ratio |
| 2043 // unchanged in v.101 | |
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2044 // Inputs: int_I_pres_surface, ppWater, char_I_desaturation_multiplier |
| 233 | 2045 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] |
| 167 | 2046 // |
| 116 | 2047 void deco_calc_desaturation_time(void) |
| 2048 { | |
| 338 | 2049 overlay rom const float *ptr; |
| 2050 | |
|
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2051 RESET_C_STACK |
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2052 |
| 233 | 2053 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2054 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2055 | |
|
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2056 #ifndef CROSS_COMPILE |
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2057 // Note: we don't use far rom pointer, because the |
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2058 // 24 bits is to complex, hence we have to set |
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2059 // the UPPER page ourself... |
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2060 // --> Set zero if tables are moved to lower pages ! |
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2061 _asm |
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2062 movlw 1 |
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2063 movwf TBLPTRU,0 |
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2064 _endasm |
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2065 #endif |
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2066 |
| 237 | 2067 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 2068 pres_surface = int_I_pres_surface * 0.001; |
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2069 ppN2 = N2_ratio * (pres_surface - ppWater); |
| 126 | 2070 int_O_desaturation_time = 0; |
| 2071 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 233 | 2072 |
| 338 | 2073 ptr = &buhlmann_ht[0]; |
| 339 | 2074 for(ci=0; ci<NUM_COMP; ci++) |
| 126 | 2075 { |
| 338 | 2076 overlay float var_N2_halftime = *ptr++; |
| 2077 overlay float var_He_halftime = *ptr++; | |
| 251 | 2078 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 2079 overlay float temp1; | |
| 2080 overlay float temp2; | |
| 2081 overlay float temp3; | |
| 2082 overlay float temp4; | |
| 338 | 2083 |
| 2084 assert( 4.0 <= var_N2_halftime && var_N2_halftime <= 635.0 ); | |
| 2085 assert( 1.5099 <= var_He_halftime && var_He_halftime <= 240.03 ); | |
| 2086 | |
| 126 | 2087 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 2088 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 2089 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
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2090 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
| 126 | 2091 // N2 |
| 339 | 2092 temp1 = 1.05 * ppN2 - pres_tissue_N2[ci]; |
| 2093 temp2 = ppN2 - pres_tissue_N2[ci]; | |
| 126 | 2094 if (temp2 >= 0.0) |
| 2095 { | |
| 233 | 2096 temp1 = 0.0; |
| 2097 temp2 = 0.0; | |
| 126 | 2098 } |
| 2099 else | |
| 2100 temp1 = temp1 / temp2; | |
| 251 | 2101 if( 0.0 < temp1 && temp1 < 1.0 ) |
| 126 | 2102 { |
|
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2103 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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2104 // minus because log is negative. |
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2105 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
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2106 temp2 = var_N2_halftime * temp1 / float_desaturation_multiplier; // time necessary (in minutes ) for complete desaturation (see comment about 5 percent) , new in v.101: float_desaturation_multiplier |
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2107 |
| 126 | 2108 } |
| 2109 else | |
| 2110 { | |
| 233 | 2111 temp1 = 0.0; |
| 2112 temp2 = 0.0; | |
| 126 | 2113 } |
| 116 | 2114 |
| 126 | 2115 // He |
| 339 | 2116 temp3 = 0.1 - pres_tissue_He[ci]; |
| 126 | 2117 if (temp3 >= 0.0) |
| 2118 { | |
| 233 | 2119 temp3 = 0.0; |
| 2120 temp4 = 0.0; | |
| 126 | 2121 } |
| 2122 else | |
| 339 | 2123 temp3 = - temp3 / pres_tissue_He[ci]; |
| 251 | 2124 if( 0.0 < temp3 && temp3 < 1.0 ) |
| 126 | 2125 { |
|
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2126 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
| 126 | 2127 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
| 2128 // minus because log is negative | |
| 165 | 2129 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 2130 } |
| 2131 else | |
| 2132 { | |
| 233 | 2133 temp3 = 0.0; |
| 2134 temp4 = 0.0; | |
| 126 | 2135 } |
| 116 | 2136 |
| 126 | 2137 // saturation_time (for flight) |
| 2138 if (temp4 > temp2) | |
| 203 | 2139 desat_time = (unsigned short)temp4; |
| 126 | 2140 else |
| 203 | 2141 desat_time = (unsigned short)temp2; |
| 252 | 2142 |
| 251 | 2143 if(desat_time > int_O_desaturation_time) |
| 2144 int_O_desaturation_time = desat_time; | |
| 116 | 2145 |
| 126 | 2146 // N2 saturation in multiples of halftime for display purposes |
| 339 | 2147 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
| 2148 temp2 = temp2 + 80.0; // set center | |
| 126 | 2149 if (temp2 < 0.0) |
| 2150 temp2 = 0.0; | |
| 2151 if (temp2 > 255.0) | |
| 2152 temp2 = 255.0; | |
| 339 | 2153 char_O_tissue_N2_saturation[ci] = (char)temp2; |
| 233 | 2154 |
| 126 | 2155 // He saturation in multiples of halftime for display purposes |
| 339 | 2156 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 |
| 2157 temp4 = temp4 + 80.0; // set center | |
| 126 | 2158 if (temp4 < 0.0) |
| 2159 temp4 = 0.0; | |
| 2160 if (temp4 > 255.0) | |
| 2161 temp4 = 255.0; | |
| 339 | 2162 char_O_tissue_He_saturation[ci] = (char)temp4; |
| 126 | 2163 } // for |
| 167 | 2164 } |
| 116 | 2165 |
| 167 | 2166 ////////////////////////////////////////////////////////////////////////////// |
| 2167 // calc_wo_deco_step_1_min | |
| 2168 // | |
| 116 | 2169 // FIXED N2 Ratio |
| 2170 // optimized in v.101 (...saturation_multiplier) | |
| 2171 // desaturation slowed down to 70,42% | |
| 167 | 2172 // |
| 2173 static void calc_wo_deco_step_1_min(void) | |
| 116 | 2174 { |
| 251 | 2175 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2176 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
| 2177 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
| 2178 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2179 | |
| 116 | 2180 if(flag_in_divemode) |
| 2181 { | |
| 2182 flag_in_divemode = 0; | |
| 2183 set_dbg_end_of_dive(); | |
| 2184 } | |
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2185 |
| 126 | 2186 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 233 | 2187 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
| 2188 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
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2189 ppN2 = N2_ratio * (pres_respiration - ppWater); // ppWater is the extra pressure in the body |
| 200 | 2190 ppHe = 0.0; |
| 126 | 2191 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 2192 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 2193 |
| 339 | 2194 calc_tissue(1); // update the pressure in the tissues N2/He in accordance with the new ambient pressure |
| 167 | 2195 |
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2196 clear_deco_table(); |
| 200 | 2197 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 2198 char_O_nullzeit = 0; |
| 168 | 2199 int_O_ascenttime = 0; |
| 323 | 2200 int_O_extra_ascenttime = 0; |
| 126 | 2201 calc_gradient_factor(); |
| 167 | 2202 } |
| 126 | 2203 |
| 167 | 2204 ////////////////////////////////////////////////////////////////////////////// |
| 2205 ////////////////////////////////////////////////////////////////////////////// | |
| 2206 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 2207 ////////////////////////////////////////////////////////////////////////////// | |
| 2208 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 2209 |
| 184 | 2210 #ifndef CROSS_COMPILE |
| 116 | 2211 void deco_hash(void) |
| 2212 { | |
| 167 | 2213 overlay unsigned char md_i, md_j; // Loop index. |
| 2214 overlay unsigned char md_t; | |
| 2215 overlay unsigned char md_buffer[16]; | |
| 2216 overlay unsigned char md_temp; | |
| 203 | 2217 overlay unsigned short md_pointer; |
| 167 | 2218 |
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2219 RESET_C_STACK |
| 126 | 2220 |
| 2221 // init | |
| 164 | 2222 for(md_i=0;md_i<16;md_i++) |
| 126 | 2223 { |
| 2224 md_state[md_i] = 0; | |
| 164 | 2225 char_O_hash[md_i] = 0; |
| 126 | 2226 } // for md_i 16 |
| 116 | 2227 |
| 126 | 2228 _asm |
| 167 | 2229 movlw 0x01 // md_pi address. |
| 2230 movwf TBLPTRU,0 | |
| 2231 movlw 0x7E | |
| 2232 movwf TBLPTRH,0 | |
| 2233 movlw 0x00 | |
| 2234 movwf TBLPTRL,0 | |
| 126 | 2235 _endasm; |
| 165 | 2236 md_i = 0; |
| 2237 do { | |
| 126 | 2238 _asm |
| 2239 TBLRDPOSTINC | |
| 2240 movff TABLAT,md_temp | |
| 2241 _endasm | |
| 165 | 2242 md_pi_subst[md_i++] = md_temp; |
| 2243 } while( md_i != 0 ); | |
| 2244 | |
| 126 | 2245 _asm |
| 167 | 2246 movlw 0x00 |
| 2247 movwf TBLPTRU,0 | |
| 2248 movlw 0x00 | |
| 2249 movwf TBLPTRH,0 | |
| 2250 movlw 0x00 | |
| 2251 movwf TBLPTRL,0 | |
| 126 | 2252 _endasm |
| 167 | 2253 |
| 126 | 2254 // cycle buffers |
| 2255 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 2256 { | |
| 2257 md_t = 0; | |
| 2258 for (md_i=0;md_i<16;md_i++) | |
| 2259 { | |
| 2260 if(md_pointer == 9) | |
| 164 | 2261 md_temp = char_O_hash[md_i]; |
| 126 | 2262 else |
| 2263 { | |
| 2264 _asm | |
| 167 | 2265 TBLRDPOSTINC |
| 2266 movff TABLAT,md_temp | |
| 126 | 2267 _endasm |
| 2268 } // else | |
| 167 | 2269 |
| 2270 md_buffer[md_i] = md_temp; | |
| 186 | 2271 md_state[md_i+16] = md_temp; |
| 2272 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2273 } // for md_i 16 |
| 2274 | |
| 2275 for (md_i=0;md_i<18;md_i++) | |
| 2276 { | |
| 2277 for (md_j=0;md_j<48;md_j++) | |
| 2278 { | |
| 167 | 2279 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2280 md_t = md_state[md_j]; |
| 2281 } // for md_j 48 | |
| 2282 md_t = (unsigned char)(md_t+1); | |
| 2283 } // for md_i 18 | |
| 164 | 2284 md_t = char_O_hash[15]; |
| 126 | 2285 |
| 2286 for (md_i=0;md_i<16;md_i++) | |
| 2287 { | |
| 167 | 2288 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2289 md_t = char_O_hash[md_i]; |
| 126 | 2290 } // for md_i 16 |
| 2291 } // for md_pointer | |
| 116 | 2292 } // void deco_hash(void) |
| 184 | 2293 #endif |
| 116 | 2294 |
| 167 | 2295 ////////////////////////////////////////////////////////////////////////////// |
| 2296 // deco_clear_CNS_fraction | |
| 2297 // | |
| 116 | 2298 // new in v.101 |
| 167 | 2299 // |
| 116 | 2300 void deco_clear_CNS_fraction(void) |
| 2301 { | |
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2302 RESET_C_STACK |
| 237 | 2303 |
| 126 | 2304 CNS_fraction = 0.0; |
| 2305 char_O_CNS_fraction = 0; | |
| 167 | 2306 } |
| 116 | 2307 |
| 167 | 2308 ////////////////////////////////////////////////////////////////////////////// |
| 2309 // deco_calc_CNS_fraction | |
| 2310 // | |
| 116 | 2311 // new in v.101 |
| 2312 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 2313 // |
| 116 | 2314 // Input: char_I_actual_ppO2 |
| 292 | 2315 // char_I_step_is_1min : use 1min steps instead of 2sec. |
| 116 | 2316 // Output: char_O_CNS_fraction |
| 2317 // Uses and Updates: CNS_fraction | |
| 2318 // Uses: acutal_ppO2 | |
| 167 | 2319 // |
| 116 | 2320 void deco_calc_CNS_fraction(void) |
| 2321 { | |
| 167 | 2322 overlay float actual_ppO2; |
| 292 | 2323 overlay float time_factor = 1.0f; |
| 126 | 2324 RESET_C_STACK |
| 167 | 2325 |
| 237 | 2326 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); |
| 2327 assert( char_I_actual_ppO2 > 15 ); | |
| 2328 | |
| 126 | 2329 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 292 | 2330 if( char_I_step_is_1min ) |
| 2331 time_factor = 30.0f; | |
| 116 | 2332 |
| 126 | 2333 if (char_I_actual_ppO2 < 50) |
| 292 | 2334 ; // no changes |
| 126 | 2335 else if (char_I_actual_ppO2 < 60) |
| 292 | 2336 CNS_fraction += time_factor/(-54000.0 * actual_ppO2 + 54000.0); |
| 126 | 2337 else if (char_I_actual_ppO2 < 70) |
| 292 | 2338 CNS_fraction += time_factor/(-45000.0 * actual_ppO2 + 48600.0); |
| 126 | 2339 else if (char_I_actual_ppO2 < 80) |
| 292 | 2340 CNS_fraction += time_factor/(-36000.0 * actual_ppO2 + 42300.0); |
| 126 | 2341 else if (char_I_actual_ppO2 < 90) |
| 292 | 2342 CNS_fraction += time_factor/(-27000.0 * actual_ppO2 + 35100.0); |
| 126 | 2343 else if (char_I_actual_ppO2 < 110) |
| 292 | 2344 CNS_fraction += time_factor/(-18000.0 * actual_ppO2 + 27000.0); |
| 126 | 2345 else if (char_I_actual_ppO2 < 150) |
| 292 | 2346 CNS_fraction += time_factor/(-9000.0 * actual_ppO2 + 17100.0); |
| 126 | 2347 else if (char_I_actual_ppO2 < 160) |
| 292 | 2348 CNS_fraction += time_factor/(-22500.0 * actual_ppO2 + 37350.0); |
| 126 | 2349 else if (char_I_actual_ppO2 < 165) |
| 292 | 2350 CNS_fraction += time_factor*0.000755; // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity... Formula (A1) based on value for 1.55 and c=20 |
| 126 | 2351 else if (char_I_actual_ppO2 < 170) |
| 292 | 2352 CNS_fraction += time_factor*0.00102; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 |
| 126 | 2353 else if (char_I_actual_ppO2 < 175) |
| 292 | 2354 CNS_fraction += time_factor*0.00136; |
| 126 | 2355 else if (char_I_actual_ppO2 < 180) |
| 292 | 2356 CNS_fraction += time_factor*0.00180; |
| 126 | 2357 else if (char_I_actual_ppO2 < 185) |
| 292 | 2358 CNS_fraction += time_factor*0.00237; |
| 126 | 2359 else if (char_I_actual_ppO2 < 190) |
| 292 | 2360 CNS_fraction += time_factor*0.00310; |
| 126 | 2361 else if (char_I_actual_ppO2 < 195) |
| 292 | 2362 CNS_fraction += time_factor*0.00401; |
| 126 | 2363 else if (char_I_actual_ppO2 < 200) |
| 292 | 2364 CNS_fraction += time_factor*0.00517; |
| 126 | 2365 else if (char_I_actual_ppO2 < 230) |
| 292 | 2366 CNS_fraction += time_factor*0.0209; |
| 126 | 2367 else |
| 292 | 2368 CNS_fraction += time_factor*0.0482; // value for 2.5 |
| 116 | 2369 |
| 126 | 2370 if (CNS_fraction > 2.5) |
| 2371 CNS_fraction = 2.5; | |
| 2372 if (CNS_fraction < 0.0) | |
| 2373 CNS_fraction = 0.0; | |
| 2374 | |
| 2375 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2376 } |
| 116 | 2377 |
| 167 | 2378 ////////////////////////////////////////////////////////////////////////////// |
| 2379 // deco_calc_CNS_decrease_15min | |
| 2380 // | |
| 116 | 2381 // new in v.101 |
| 167 | 2382 // |
| 116 | 2383 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2384 // (Used in sleepmode, for low battery mode). |
| 167 | 2385 // |
| 116 | 2386 // Output: char_O_CNS_fraction |
| 2387 // Uses and Updates: CNS_fraction | |
| 167 | 2388 // |
| 116 | 2389 void deco_calc_CNS_decrease_15min(void) |
| 2390 { | |
| 237 | 2391 RESET_C_STACK |
| 2392 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
| 2393 | |
| 126 | 2394 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2395 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2396 } | |
| 116 | 2397 |
| 167 | 2398 ////////////////////////////////////////////////////////////////////////////// |
| 2399 // deco_calc_percentage | |
| 2400 // | |
| 116 | 2401 // new in v.101 |
| 167 | 2402 // |
| 116 | 2403 // calculates int_I_temp * char_I_temp / 100 |
| 2404 // output is int_I_temp | |
| 200 | 2405 // |
| 2406 // Used to compute NoFly remaining time. | |
|
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2407 // |
| 116 | 2408 void deco_calc_percentage(void) |
| 2409 { | |
|
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|
2410 RESET_C_STACK |
|
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2411 |
| 237 | 2412 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 2413 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
| 2414 | |
|
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2415 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2416 |
| 302 | 2417 assert( int_I_temp < 2880 ); // Less than 48h... |
|
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2418 } |
|
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2419 |
|
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2420 |
|
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2421 ////////////////////////////////////////////////////////////////////////////// |
|
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2422 // deco_gas_volumes |
|
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2423 // |
|
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2424 // new in v.111 |
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2425 // |
|
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2426 // calculates volumes for each gas. |
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2427 // |
|
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2428 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
d995e220ddac
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2429 // Gas list. |
|
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2430 // char_I_first_gas is the bottom gas. |
|
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2431 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
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2432 // CF#54 == TRUE if shallowest stop first. |
|
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2433 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) or bar/min. |
|
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2434 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0) or bar/min. |
| 224 | 2435 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
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2436 // |
|
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2437 void deco_gas_volumes(void) |
|
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2438 { |
| 338 | 2439 overlay float volumes[NUM_GAS]; |
| 265 | 2440 overlay float bottom_usage, ascent_usage; |
|
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2441 overlay unsigned char i, deepest_first; |
| 241 | 2442 overlay unsigned char gas; |
|
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2443 RESET_C_STACK |
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2444 |
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2445 //---- initialize with bottom consumption -------------------------------- |
| 338 | 2446 for(i=0; i<NUM_GAS; ++i) // Nothing yet... |
|
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2447 volumes[i] = 0.0; |
|
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2448 |
| 338 | 2449 assert(1 <= char_I_first_gas && char_I_first_gas <= NUM_GAS); |
| 241 | 2450 gas = char_I_first_gas - 1; |
| 2451 | |
| 265 | 2452 bottom_usage = read_custom_function(56) * 0.1; |
| 2453 if( bottom_usage > 0.0 ) | |
| 2454 volumes[gas] | |
| 2455 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
| 2456 * char_I_bottom_time // in minutes. | |
| 2457 * bottom_usage; // In liter/minutes. | |
| 2458 else | |
| 2459 volumes[gas] = 65535.0; | |
|
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2460 |
|
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|
2461 //---- Ascent usage ------------------------------------------------------ |
|
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2462 |
|
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2463 deepest_first = read_custom_function(54) == 0; |
|
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2464 ascent_usage = read_custom_function(57) * 0.1; // In liter/minutes. |
|
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2465 |
| 224 | 2466 // Usage up to the first stop: |
| 2467 // - computed at MAX depth (easier, safer), | |
|
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2468 // - with an ascent speed of 10m/min. |
| 224 | 2469 // - with ascent litter / minutes. |
|
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|
2470 // - still using bottom gas: |
| 265 | 2471 if( ascent_usage > 0.0 ) |
| 2472 volumes[gas] | |
| 2473 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar | |
| 2474 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) | |
| 2475 * ascent_usage; // Consumption ( xxx / min @ 1 bar) | |
| 2476 else | |
| 2477 volumes[gas] = 65535.0; | |
|
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2478 |
| 338 | 2479 for(i=0; i<NUM_STOPS; ++i) |
|
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2480 { |
| 241 | 2481 overlay unsigned char j; |
|
234
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2482 overlay unsigned char depth, time, ascent; |
|
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2483 |
|
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2484 // Manage stops in reverse order (CF#54) |
|
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2485 if( deepest_first ) |
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2486 { |
| 241 | 2487 time = char_O_deco_time[i]; |
|
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2488 if( time == 0 ) break; // End of table: done. |
|
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2489 |
|
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|
2490 ascent = depth = char_O_deco_depth[i] & 0x7F; |
|
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2491 if( i < 31 ) |
|
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|
2492 ascent -= char_O_deco_depth[i+1] & 0x7F; |
|
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2493 } |
|
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2494 else |
|
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|
2495 { |
|
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2496 time = char_O_deco_time[31-i]; |
|
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2497 if( time == 0 ) continue; // not yet: still searh table. |
|
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2498 |
|
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2499 ascent = depth = char_O_deco_depth[31-i] & 0x7F; |
|
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2500 if( i < 31 ) |
|
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|
2501 ascent -= char_O_deco_depth[30-i] & 0x7F; |
|
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2502 } |
|
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|
2503 |
|
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2504 // Gas switch depth ? |
| 338 | 2505 for(j=0; j<NUM_GAS; ++j) |
|
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2506 { |
|
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2507 if( depth <= char_I_deco_gas_change[j] ) |
| 241 | 2508 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 224 | 2509 gas = j; |
|
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|
2510 } |
|
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|
2511 |
|
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|
2512 // usage during stop: |
| 224 | 2513 // Note: because first gas is not in there, increment gas+1 |
| 265 | 2514 if( ascent_usage > 0.0 ) |
| 2515 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. | |
| 2516 * time // in minutes. | |
| 2517 * ascent_usage // in xxx / min @ 1bar. | |
| 2518 // Plus usage during ascent to the next stop, at 10m/min. | |
| 2519 + (depth*0.1 + 1.0) | |
|
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2520 * ascent*0.1 // metre --> min |
| 265 | 2521 * ascent_usage; |
| 2522 else | |
| 2523 volumes[gas] = 65535.0; | |
|
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|
2524 } |
|
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|
2525 |
|
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|
2526 //---- convert results for the ASM interface ----------------------------- |
| 338 | 2527 for(i=0; i<NUM_GAS; ++i) |
| 224 | 2528 if( volumes[i] > 6553.4 ) |
| 2529 int_O_gas_volumes[i] = 65535; | |
|
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|
2530 else |
| 224 | 2531 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
| 116 | 2532 } |
| 2533 | |
| 167 | 2534 ////////////////////////////////////////////////////////////////////////////// |
| 2535 | |
| 116 | 2536 void deco_push_tissues_to_vault(void) |
| 2537 { | |
| 167 | 2538 overlay unsigned char x; |
|
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|
2539 RESET_C_STACK |
| 167 | 2540 |
| 116 | 2541 cns_vault = CNS_fraction; |
| 339 | 2542 for (x=0;x<NUM_COMP;x++) |
| 2543 { | |
| 2544 pres_tissue_N2_vault[x] = pres_tissue_N2[x]; | |
| 2545 pres_tissue_He_vault[x] = pres_tissue_He[x]; | |
| 2546 } | |
| 116 | 2547 } |
| 167 | 2548 |
| 116 | 2549 void deco_pull_tissues_from_vault(void) |
| 2550 { | |
| 167 | 2551 overlay unsigned char x; |
|
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|
2552 RESET_C_STACK |
| 167 | 2553 |
| 339 | 2554 for (x=0; x<NUM_COMP; x++) |
| 2555 { | |
| 2556 pres_tissue_N2[x] = pres_tissue_N2_vault[x]; | |
| 2557 pres_tissue_He[x] = pres_tissue_He_vault[x]; | |
| 2558 } | |
| 292 | 2559 |
| 2560 // Restore both CNS variable, too. | |
| 2561 CNS_fraction = cns_vault; | |
| 2562 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); | |
| 116 | 2563 } |
| 2564 | |
| 167 | 2565 ////////////////////////////////////////////////////////////////////////////// |
| 2566 // | |
| 184 | 2567 #ifndef CROSS_COMPILE |
| 2568 void main() {} | |
| 2569 #endif |