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annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 257:f8f869bafd92
Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco()
| author | JeanDo |
|---|---|
| date | Sun, 10 Apr 2011 13:12:38 +0200 |
| parents | 8b252ff2eded |
| children | abbf9a2c2c48 |
| rev | line source |
|---|---|
| 116 | 1 // ************************************************************** |
| 2 // p2_deco.c | |
| 3 // | |
| 4 // Created on: 12.05.2009 | |
| 5 // Author: chsw | |
| 6 // | |
| 7 // ************************************************************** | |
| 8 | |
| 9 ////////////////////////////////////////////////////////////////////////////// | |
| 10 // OSTC - diving computer code | |
| 11 // Copyright (C) 2008 HeinrichsWeikamp GbR | |
| 12 // | |
| 13 // This program is free software: you can redistribute it and/or modify | |
| 14 // it under the terms of the GNU General Public License as published by | |
| 15 // the Free Software Foundation, either version 3 of the License, or | |
| 16 // (at your option) any later version. | |
| 17 // | |
| 18 // This program is distributed in the hope that it will be useful, | |
| 19 // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 21 // GNU General Public License for more details. | |
| 22 // | |
| 23 // You should have received a copy of the GNU General Public License | |
| 24 // along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 25 // | |
| 26 ////////////////////////////////////////////////////////////////////////////// | |
| 27 | |
| 28 // ***************************** | |
| 29 // ** I N T R O D U C T I O N ** | |
| 30 // ***************************** | |
| 31 // | |
| 32 // OSTC | |
| 33 // | |
| 34 // code: | |
| 35 // p2_deco_main_c_v101.c | |
| 36 // part2 of the OSTC code | |
| 37 // code with constant O2 partial pressure routines | |
| 38 // under construction !! | |
| 39 // | |
| 40 // summary: | |
| 41 // decompression routines | |
| 42 // for the OSTC experimental project | |
| 43 // written by Christian Weikamp | |
| 44 // last revision __________ | |
| 45 // comments added _________ | |
| 46 // | |
| 47 // additional files: | |
| 48 // p2_tables_v100.romdata (other files) | |
| 49 // 18f4685_ostc_v100.lkr (linker script) | |
| 50 // | |
| 51 // history: | |
| 52 // 01/03/08 v100: first release candidate | |
| 53 // 03/13/08 v101: start of programming ppO2 code | |
| 54 // 03/13/25 v101a: backup of interrim version with ppO2 calculation | |
| 55 // 03/13/25 v101: open circuit gas change during deco | |
| 56 // 03/13/25 v101: CNS_fraction calculation | |
| 57 // 03/13/26 v101: optimization of tissue calc routines | |
| 58 // 07/xx/08 v102a: debug of bottom time routine | |
| 59 // 09/xx/08 v102d: Gradient Factor Model implemenation | |
| 60 // 10/10/08 v104: renamed to build v103 for v118 stable | |
| 171 | 61 // 10/14/08 v104: integration of char_I_depth_last_deco for Gradient Model |
| 116 | 62 // 03/31/09 v107: integration of FONT Incon24 |
| 63 // 05/23/10 v109: 5 gas changes & 1 min timer | |
| 64 // 07/13/10 v110: cns vault added | |
| 65 // 12/25/10 v110: split in three files (deco.c, main.c, definitions.h) | |
| 163 | 66 // 2011/01/20: [jDG] Create a common file included in ASM and C code. |
| 167 | 67 // 2011/01/23: [jDG] Added read_custom_function(). |
| 203 | 68 // 2011/01/24: [jDG] Make ascenttime an short. No more overflow! |
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69 // 2011/01/25: [jDG] Fusion deco array for both models. |
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70 // 2011/01/25: [jDG] Use CF(54) to reverse deco order. |
| 193 | 71 // 2011/02/11: [jDG] Reworked gradient-factor implementation. |
| 197 | 72 // 2011/02/13: [jDG] CF55 for additional gas switch delay in decoplan. |
| 217 | 73 // 2011/02/24: [jDG] Fixed inconsistencies introduced by gas switch delays. |
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Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco()
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74 // 2011/04/10: [jDG] Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco() |
| 116 | 75 // |
| 167 | 76 // TODO: |
| 77 // + Allow to abort MD2 calculation (have to restart next time). | |
| 78 // | |
| 79 // Literature: | |
| 200 | 80 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 81 // 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 |
| 82 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 83 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 84 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 85 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 86 // |
| 87 // | |
| 116 | 88 |
| 89 // ********************* | |
| 90 // ** I N C L U D E S ** | |
| 91 // ********************* | |
| 92 #include <math.h> | |
| 167 | 93 |
| 192 | 94 // *********************************************** |
| 95 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 96 // *********************************************** | |
| 97 | |
| 98 #include "p2_definitions.h" | |
| 99 #include "shared_definitions.h" | |
| 100 | |
| 200 | 101 // Water vapour partial pressure in the lumb. |
| 233 | 102 #define ppWVapour 0.0627 |
| 200 | 103 |
| 167 | 104 // ************************* |
| 105 // ** P R O T O T Y P E S ** | |
| 106 // ************************* | |
| 107 | |
| 108 static void calc_hauptroutine(void); | |
| 109 static void calc_nullzeit(void); | |
| 110 | |
| 192 | 111 static void calc_tissue(PARAMETER unsigned char period); |
| 112 static void calc_limit(PARAMETER float GF_current); | |
| 113 | |
| 167 | 114 static void clear_tissue(void); |
| 115 static void calc_ascenttime(void); | |
| 116 static void update_startvalues(void); | |
|
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117 static void clear_deco_table(void); |
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118 static void update_deco_table(void); |
| 192 | 119 |
| 120 static void backup_sim_pres_tissue(void); | |
| 121 static void restore_sim_pres_tissue(void); | |
| 122 static void sim_tissue(PARAMETER unsigned char period); | |
| 123 static void sim_limit(PARAMETER float GF_current); | |
| 167 | 124 static void calc_gradient_factor(void); |
| 125 static void calc_wo_deco_step_1_min(void); | |
| 126 | |
| 127 static void calc_hauptroutine_data_input(void); | |
| 128 static void calc_hauptroutine_update_tissues(void); | |
| 129 static void calc_hauptroutine_calc_deco(void); | |
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130 static void sim_ascent_to_first_stop(void); |
| 167 | 131 |
| 241 | 132 static unsigned char gas_switch_deepest(void); |
| 133 static void gas_switch_set(void); | |
| 217 | 134 |
| 241 | 135 static unsigned char calc_nextdecodepth(void); |
| 116 | 136 |
| 200 | 137 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 138 #pragma udata bank4=0x400 |
| 116 | 139 |
| 140 static float temp_limit; | |
| 141 static float GF_low; | |
| 142 static float GF_high; | |
| 143 static float GF_delta; | |
| 192 | 144 static unsigned char low_depth; // Depth of deepest stop |
| 145 static float locked_GF_step; // GF_delta / low_depth | |
| 146 | |
| 147 static unsigned char temp_depth_limit; | |
| 171 | 148 |
| 192 | 149 // Simulation context: used to predict ascent. |
| 150 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 151 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 152 |
| 192 | 153 // Real context: what we are doing now. |
| 154 static float calc_lead_tissue_limit; // | |
| 116 | 155 |
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156 static unsigned char internal_deco_time[32]; |
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157 static unsigned char internal_deco_depth[32]; |
| 116 | 158 |
| 159 static float cns_vault; | |
| 160 static float pres_tissue_vault[32]; | |
| 161 | |
| 163 | 162 //---- Bank 5 parameters ----------------------------------------------------- |
| 163 #pragma udata bank5=0x500 | |
| 164 | |
| 167 | 165 static unsigned char ci; |
| 116 | 166 static float pres_respiration; |
| 167 static float pres_surface; | |
| 168 static float temp_deco; | |
| 236 | 169 static float ppN2; |
| 200 | 170 static float ppHe; |
| 116 | 171 static float temp_tissue; |
| 200 | 172 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 173 static float He_ratio; // Breathed gas helium ratio. | |
| 174 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 175 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 176 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 177 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 178 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 179 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 180 |
| 164 | 181 static float pres_diluent; // new in v.101 |
| 182 static float const_ppO2; // new in v.101 | |
| 183 static float deco_ppO2_change; // new in v.101 | |
| 184 static float deco_ppO2; // new in v.101 | |
| 116 | 185 |
| 241 | 186 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
| 187 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
| 203 | 188 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 189 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 190 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 191 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 192 static float CNS_fraction; // new in v.101 | |
| 193 static float float_saturation_multiplier; // new in v.101 | |
| 194 static float float_desaturation_multiplier; // new in v.101 | |
| 167 | 195 static float float_deco_distance; // new in v.101 |
| 196 static char flag_in_divemode; // new in v.108 | |
| 197 | |
| 225 | 198 static unsigned char deco_gas_change[5]; // new in v.109 |
| 167 | 199 |
| 163 | 200 //---- Bank 6 parameters ----------------------------------------------------- |
| 201 #pragma udata bank6=0x600 | |
| 116 | 202 |
| 197 | 203 float pres_tissue[32]; |
| 204 float pres_tissue_limit[16]; | |
| 205 float sim_pres_tissue_limit[16]; | |
| 116 | 206 |
| 163 | 207 //---- Bank 7 parameters ----------------------------------------------------- |
| 208 #pragma udata bank7=0x700 | |
| 209 | |
| 197 | 210 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
| 116 | 211 static float sim_pres_tissue_backup[32]; |
| 212 | |
| 163 | 213 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 214 #pragma udata bank8=0x800 |
| 163 | 215 |
| 116 | 216 static char md_pi_subst[256]; |
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217 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 218 |
| 163 | 219 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 220 #pragma udata bank9=0x900 |
| 116 | 221 |
| 163 | 222 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 223 |
| 164 | 224 // internal, dbg: |
| 167 | 225 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 226 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 227 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 224 | 228 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
| 229 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
| 164 | 230 static float DBG_pres_surface; // new in v.108 |
| 231 static float DBG_GF_low; // new in v.108 | |
| 232 static float DBG_GF_high; // new in v.108 | |
| 233 static float DBG_const_ppO2; // new in v.108 | |
| 234 static float DBG_deco_ppO2_change; // new in v.108 | |
| 235 static float DBG_deco_ppO2; // new in v.108 | |
| 236 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 237 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 238 static float DBG_float_deco_distance; // new in v.108 | |
| 239 static float DBG_N2_ratio; // new in v.108 | |
| 240 static float DBG_He_ratio; // new in v.108 | |
| 241 | |
| 167 | 242 ////////////////////////////////////////////////////////////////////////////// |
| 243 ////////////////////////////////////////////////////////////////////////////// | |
| 244 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 245 ////////////////////////////////////////////////////////////////////////////// | |
| 246 ////////////////////////////////////////////////////////////////////////////// | |
| 247 // | |
| 248 // End of PROM code is 17F00, So push tables on PROM top... | |
| 249 // | |
| 250 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 251 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 252 |
| 167 | 253 // Magic table to compute the MD2 HASH |
| 254 // | |
| 255 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 256 rom const rom unsigned short md_pi[] = |
| 116 | 257 { |
| 258 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 259 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 260 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 261 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 262 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 263 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 264 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 265 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 266 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 267 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 268 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 269 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 270 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 271 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 272 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 273 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 274 }; | |
| 275 | |
| 167 | 276 ////////////////////////////////////////////////////////////////////////////// |
| 277 ////////////////////////////////////////////////////////////////////////////// | |
| 278 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 279 ////////////////////////////////////////////////////////////////////////////// | |
| 280 ////////////////////////////////////////////////////////////////////////////// | |
| 281 // | |
| 116 | 282 // all new in v.102 |
| 283 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 284 | |
| 285 #pragma code p2_deco = 0x0C000 | |
| 286 | |
| 167 | 287 ////////////////////////////////////////////////////////////////////////////// |
| 288 // DBS - debug on start of dive | |
| 289 // | |
| 290 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 291 { |
| 167 | 292 overlay char i; // Local loop index. |
| 293 | |
| 294 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 295 int_O_DBS_bitfield = 0; |
| 296 int_O_DBS2_bitfield = 0; | |
| 297 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 298 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 299 else | |
| 300 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 301 int_O_DBG_post_bitfield = 0; | |
| 167 | 302 |
| 303 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 304 char_O_NDL_at_20mtr = 255; |
| 305 | |
| 167 | 306 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 307 DBG_N2_ratio = N2_ratio; |
| 308 DBG_He_ratio = He_ratio; | |
| 309 DBG_char_I_deco_model = char_I_deco_model; | |
| 310 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 311 DBG_pres_surface = pres_surface; | |
| 312 DBG_GF_low = GF_low; | |
| 313 DBG_GF_high = GF_high; | |
| 314 DBG_const_ppO2 = const_ppO2; | |
| 315 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 316 DBG_deco_ppO2 = deco_ppO2; | |
| 224 | 317 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 318 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 319 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 320 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 321 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 322 DBG_float_deco_distance = float_deco_distance; | |
| 323 | |
| 167 | 324 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 325 if(char_I_deco_model) |
| 326 int_O_DBS_bitfield |= DBS_mode; | |
| 327 if(const_ppO2) | |
| 328 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 329 for(i = 16; i < 32; i++) |
| 330 if(pres_tissue[i]) | |
| 116 | 331 int_O_DBS_bitfield |= DBS_HE_sat; |
| 332 if(deco_ppO2_change) | |
| 333 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 334 if(float_saturation_multiplier < 0.99) | |
| 335 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 336 if(float_saturation_multiplier > 1.3) | |
| 337 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 338 if(GF_low < 0.19) | |
| 339 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 340 if(GF_low > 1.01) | |
| 341 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 342 if(GF_high < 0.6) | |
| 343 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 344 if(GF_high > 1.01) | |
| 345 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 346 if((N2_ratio + He_ratio) > 0.95) | |
| 347 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 348 if((N2_ratio + He_ratio) < 0.05) | |
| 349 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 350 if(float_deco_distance > 0.25) | |
| 351 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 352 if(char_I_depth_last_deco > 8) | |
| 353 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 354 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 355 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 356 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 357 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 358 if(pres_respiration > 3.0) | |
| 359 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 360 if(pres_surface - pres_respiration > 0.2) | |
| 361 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 362 if(pres_surface < 0.75) | |
| 363 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 364 if(pres_surface > 1.11) | |
| 365 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 366 if(float_desaturation_multiplier < 0.70) | |
| 367 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 368 if(float_desaturation_multiplier > 1.01) | |
| 369 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 370 if(GF_low > GF_high) | |
| 371 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 372 } | |
| 373 | |
| 167 | 374 ////////////////////////////////////////////////////////////////////////////// |
| 375 // DBG - set DBG to end_of_dive | |
| 376 // | |
| 377 static void set_dbg_end_of_dive(void) | |
| 116 | 378 { |
| 379 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 380 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 381 } | |
| 382 | |
| 167 | 383 ////////////////////////////////////////////////////////////////////////////// |
| 384 // DBG - NDL at first 20 m. hit | |
| 385 // | |
| 386 static void check_ndl(void) | |
| 116 | 387 { |
| 167 | 388 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 389 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 390 ) | |
| 116 | 391 { |
| 167 | 392 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 393 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 394 char_O_NDL_at_20mtr = 254; |
| 116 | 395 } |
| 396 } | |
| 397 | |
| 167 | 398 ////////////////////////////////////////////////////////////////////////////// |
| 399 // DBG - multi main during dive | |
| 400 // | |
| 184 | 401 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 402 { |
| 203 | 403 overlay unsigned short temp_DBS = 0; |
| 200 | 404 overlay unsigned char i; // Local loop index. |
| 167 | 405 |
| 116 | 406 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 407 temp_DBS |= DBG_c_gas; | |
| 408 if(DBG_const_ppO2 != const_ppO2) | |
| 409 temp_DBS |= DBG_c_ppO2; | |
| 167 | 410 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 411 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 412 ) | |
| 116 | 413 temp_DBS |= DBG_CdeSAT; |
| 414 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 415 temp_DBS |= DBG_C_MODE; | |
| 416 if(DBG_pres_surface != pres_surface) | |
| 417 temp_DBS |= DBG_C_SURF; | |
| 167 | 418 |
| 419 if( !DBS_HE_sat && !He_ratio) | |
| 420 for(i = 16; i < 32; i++) | |
| 421 if(pres_tissue[i]) | |
| 116 | 422 temp_DBS |= DBG_HEwoHE; |
| 167 | 423 |
| 116 | 424 if(DBG_deco_ppO2 != deco_ppO2) |
| 425 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 426 |
| 225 | 427 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 428 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 429 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 430 temp_DBS |= DBG_C_DGAS; |
| 167 | 431 |
| 116 | 432 if(DBG_float_deco_distance != float_deco_distance) |
| 433 temp_DBS |= DBG_C_DIST; | |
| 434 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 435 temp_DBS |= DBG_C_LAST; | |
| 167 | 436 if( DBG_GF_low != GF_low |
| 437 || DBG_GF_high != GF_high ) | |
| 116 | 438 temp_DBS |= DBG_C_GF; |
| 439 if(pres_respiration > 13.0) | |
| 440 temp_DBS |= DBG_PHIGH; | |
| 441 if(pres_surface - pres_respiration > 0.2) | |
| 442 temp_DBS |= DBG_PLOW; | |
| 443 if(is_post_check) | |
| 444 int_O_DBG_post_bitfield |= temp_DBS; | |
| 445 else | |
| 446 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 447 } | |
| 448 | |
| 167 | 449 ////////////////////////////////////////////////////////////////////////////// |
| 450 // DBG - prior to calc. of dive | |
| 451 // | |
| 452 static void check_pre_dbg(void) | |
| 116 | 453 { |
| 454 check_dbg(0); | |
| 455 } | |
| 456 | |
| 167 | 457 ////////////////////////////////////////////////////////////////////////////// |
| 458 // DBG - after decocalc of dive | |
| 459 // | |
| 460 static void check_post_dbg(void) | |
| 116 | 461 { |
| 462 check_dbg(1); | |
| 463 } | |
| 464 | |
| 165 | 465 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 466 ////////////////////////////////////////////////////////////////////////////// |
| 467 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 468 ////////////////////////////////////////////////////////////////////////////// | |
| 469 ////////////////////////////////////////////////////////////////////////////// | |
| 470 | |
| 235 | 471 ////////////////////////////////////////////////////////////////////////////// |
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472 // Bump to blue-screen when an assert is wrong |
| 235 | 473 #ifdef __DEBUG |
| 474 void assert_failed(PARAMETER short int line) | |
| 475 { | |
| 476 extern void PLED_resetdebugger(void); | |
| 477 extern unsigned short temp10; | |
| 478 | |
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479 temp10 = line; // Show source line number as stack depth. |
| 235 | 480 PLED_resetdebugger(); |
| 481 } | |
| 482 #endif | |
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483 |
| 235 | 484 ////////////////////////////////////////////////////////////////////////////// |
| 485 // When calling C code from ASM context, the data stack pointer and | |
| 486 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
| 487 | |
| 488 #ifdef CROSS_COMPILE | |
| 489 # define RESET_C_STACK | |
| 490 #else | |
| 491 # ifdef __DEBUG | |
| 492 # define RESET_C_STACK fillDataStack(); | |
| 493 void fillDataStack(void) | |
| 494 { | |
| 495 _asm | |
| 496 LFSR 1,C_STACK | |
| 497 MOVLW 0xCC | |
| 498 loop: MOVWF POSTINC1,0 | |
| 499 TSTFSZ FSR1L,0 | |
| 500 BRA loop | |
| 501 | |
| 502 LFSR 1,C_STACK | |
| 503 LFSR 2,C_STACK | |
| 504 _endasm | |
| 505 } | |
| 506 # else | |
| 507 # define RESET_C_STACK \ | |
| 508 _asm \ | |
| 509 LFSR 1, C_STACK \ | |
| 510 LFSR 2, C_STACK \ | |
| 511 _endasm | |
| 512 # endif | |
| 513 #endif | |
| 514 | |
| 515 ////////////////////////////////////////////////////////////////////////////// | |
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516 // Read CF values from the C code. |
| 235 | 517 |
| 203 | 518 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 519 { |
| 184 | 520 #ifdef CROSS_COMPILE |
| 521 extern unsigned short custom_functions[]; | |
| 522 return custom_functions[cf]; | |
| 523 #else | |
| 167 | 524 extern unsigned char hi, lo; |
| 525 extern void getcustom15(); | |
| 526 _asm | |
| 527 movff cf,WREG | |
| 528 call getcustom15,0 | |
| 529 movff lo,PRODL | |
| 530 movff hi,PRODH | |
| 531 _endasm | |
| 184 | 532 #endif |
| 167 | 533 } |
| 534 | |
| 535 ////////////////////////////////////////////////////////////////////////////// | |
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536 // Fast subroutine to read RTC timer 3. |
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537 // Note: result is in 1/32 of msecs. |
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538 static unsigned short tmr3(void) |
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539 { |
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540 _asm |
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541 movff 0xfb2,PRODL // TMR3L |
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542 movff 0xfb3,PRODH // TMR3H |
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543 _endasm // result in PRODH:PRODL. |
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544 } |
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545 |
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546 ////////////////////////////////////////////////////////////////////////////// |
| 165 | 547 // read buhlmann tables for compatriment ci |
| 167 | 548 // If period == 0 : 2sec interval |
| 549 // 1 : 1 min interval | |
| 550 // 2 : 10 min interval. | |
| 184 | 551 static void read_buhlmann_coefficients(PARAMETER char period) |
| 165 | 552 { |
| 184 | 553 #ifndef CROSS_COMPILE |
| 167 | 554 // Note: we don't use far rom pointer, because the |
| 555 // 24 bits is to complex, hence we have to set | |
| 556 // the UPPER page ourself... | |
| 557 // --> Set zero if tables are moved to lower pages ! | |
| 558 _asm | |
| 559 movlw 1 | |
| 560 movwf TBLPTRU,0 | |
| 561 _endasm | |
| 184 | 562 #endif |
| 197 | 563 assert( 0 <= ci && ci < 16 ); |
| 167 | 564 |
| 165 | 565 var_N2_a = buhlmann_a[ci]; |
| 566 var_N2_b = buhlmann_b[ci]; | |
| 167 | 567 var_He_a = (buhlmann_a+16)[ci]; |
| 568 var_He_b = (buhlmann_b+16)[ci]; | |
| 569 | |
| 165 | 570 // Check reading consistency: |
| 571 if( (var_N2_a < 0.231) | |
| 572 || (var_N2_a > 1.27) | |
| 573 || (var_N2_b < 0.504) | |
| 574 || (var_N2_b > 0.966) | |
| 575 || (var_He_a < 0.510) | |
| 576 || (var_He_a > 1.75) | |
| 577 || (var_He_b < 0.423) | |
| 578 || (var_He_b > 0.927) | |
| 579 ) | |
| 580 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 167 | 581 |
| 165 | 582 // Integration intervals. |
| 167 | 583 switch(period) |
| 165 | 584 { |
| 167 | 585 case -1://---- no interval ----------------------------------------------- |
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586 var_N2_e = 0.0; |
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587 var_He_e = 0.0; |
| 167 | 588 break; |
| 589 | |
| 165 | 590 case 0: //---- 2 sec ----------------------------------------------------- |
| 591 var_N2_e = e2secs[ci]; | |
| 167 | 592 var_He_e = (e2secs+16)[ci]; |
| 165 | 593 |
| 594 // Check reading consistency: | |
| 595 if( (var_N2_e < 0.0000363) | |
| 596 || (var_N2_e > 0.00577) | |
| 597 || (var_He_e < 0.0000961) | |
| 598 || (var_He_e > 0.150) | |
| 599 ) | |
| 600 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 601 | |
| 602 break; | |
| 603 | |
| 604 case 1: //---- 1 min ----------------------------------------------------- | |
| 605 var_N2_e = e1min[ci]; | |
| 167 | 606 var_He_e = (e1min+16)[ci]; |
| 165 | 607 |
| 608 // Check reading consistency: | |
| 609 if( (var_N2_e < 1.09E-3) | |
| 610 || (var_N2_e > 0.1592) | |
| 611 || (var_He_e < 0.00288) | |
| 612 || (var_He_e > 0.3682) | |
| 613 ) | |
| 614 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 615 | |
| 616 break; | |
| 617 | |
| 618 case 2: //---- 10 min ---------------------------------------------------- | |
| 619 var_N2_e = e10min[ci]; | |
| 167 | 620 var_He_e = (e10min+16)[ci]; |
| 165 | 621 |
| 622 // Check reading consistency: | |
| 623 if( (var_N2_e < 0.01085) | |
| 624 || (var_N2_e > 0.82323) | |
| 625 || (var_He_e < 0.02846) | |
| 626 || (var_He_e > 0.98986) | |
| 627 ) | |
| 628 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 629 | |
| 630 break; | |
| 197 | 631 |
| 632 default: | |
| 633 assert(0); // Never go there... | |
| 165 | 634 } |
| 635 } | |
| 636 | |
| 637 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 638 // calc_next_decodepth_GF |
| 165 | 639 // |
| 116 | 640 // new in v.102 |
| 165 | 641 // |
| 116 | 642 // INPUT, changing during dive: |
| 192 | 643 // low_depth |
| 167 | 644 // |
| 116 | 645 // INPUT, fixed during dive: |
| 167 | 646 // pres_surface |
| 647 // GF_delta | |
| 648 // GF_high | |
| 649 // GF_low | |
| 171 | 650 // char_I_depth_last_deco |
| 167 | 651 // float_deco_distance |
| 652 // | |
| 241 | 653 // RETURN TRUE iff a stop is needed. |
| 654 // | |
| 116 | 655 // OUTPUT |
| 171 | 656 // locked_GF_step |
| 167 | 657 // temp_depth_limt |
| 192 | 658 // low_depth |
| 167 | 659 // |
| 241 | 660 static unsigned char calc_nextdecodepth(void) |
| 167 | 661 { |
| 241 | 662 //--- Max ascent speed --------------------------------------------------- |
| 663 // Recompute leading gas limit, at current depth: | |
| 664 overlay float depth = (temp_deco - pres_surface) / 0.09985; | |
| 665 | |
| 666 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
| 667 overlay float min_depth = depth - 10.0; | |
| 668 | |
| 669 // Do we need to stop at current depth ? | |
| 670 overlay unsigned char need_stop = 0; | |
| 671 | |
| 672 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
| 673 assert( low_depth < 255 ); | |
| 674 | |
| 212 | 675 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 676 if (char_I_deco_model == 1) |
| 677 { | |
| 241 | 678 if( depth >= low_depth ) |
| 192 | 679 sim_limit( GF_low ); |
| 680 else | |
| 681 sim_limit( GF_high - depth * locked_GF_step ); | |
| 682 | |
| 683 // Stops are needed ? | |
| 684 if( sim_lead_tissue_limit > pres_surface ) | |
| 685 { | |
| 241 | 686 // Deepest stop, in meter (rounded up with a margin of 0.5m) |
| 687 overlay unsigned char first_stop = 3 * (short)(0.83 + (sim_lead_tissue_limit - pres_surface) / 0.29955); | |
| 192 | 688 assert( first_stop < 128 ); |
| 171 | 689 |
| 212 | 690 // Apply correction for the shallowest stop. |
| 192 | 691 if( first_stop == 3 ) // new in v104 |
| 692 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 693 |
| 192 | 694 // Check all stops until one is higher than tolerated presure |
| 695 while(first_stop > 0) | |
| 696 { | |
| 697 overlay unsigned char next_stop; // Next index (0..30) | |
| 698 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 699 |
| 241 | 700 // Check max speed, or reaching surface. |
| 701 if( first_stop <= min_depth ) | |
| 702 break; | |
| 703 | |
| 704 // So, there is indeed a stop needed: | |
| 705 need_stop = 1; | |
| 706 | |
| 192 | 707 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 708 next_stop = 0; | |
| 216 | 709 else if( first_stop == 6 ) |
| 710 next_stop = char_I_depth_last_deco; | |
| 192 | 711 else |
| 712 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 713 |
| 241 | 714 pres_stop = next_stop * 0.09985 // Meters to bar |
| 192 | 715 + pres_surface; |
| 716 | |
| 212 | 717 // Keep GF_low until a first stop depth is found: |
| 718 if( next_stop >= low_depth ) | |
| 719 sim_limit( GF_low ); | |
| 720 else | |
| 721 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 722 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 723 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 724 |
| 192 | 725 // upper limit (lowest pressure tolerated): |
| 726 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 727 break; | |
| 728 | |
| 729 // Else, validate that stop and loop... | |
| 730 first_stop = next_stop; | |
| 731 } | |
| 171 | 732 |
| 212 | 733 // Is it a new deepest first stop ? If yes this is the reference for |
| 734 // the varying gradient factor. So reset that: | |
| 241 | 735 if( first_stop > min_depth && first_stop > low_depth ) |
| 212 | 736 { |
| 737 // Store the deepest stop depth, as reference for GF_low. | |
| 738 low_depth = first_stop; | |
| 739 locked_GF_step = GF_delta / low_depth; | |
| 740 } | |
| 741 | |
| 742 // next stop is the last validated depth found, aka first_stop | |
| 192 | 743 temp_depth_limit = first_stop; // Stop depth, in meter. |
| 744 } | |
| 171 | 745 else |
| 192 | 746 temp_depth_limit = 0; // stop depth, in meter. |
| 116 | 747 } |
| 167 | 748 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 749 { |
| 192 | 750 overlay float pres_gradient; |
| 751 | |
| 752 // Original model | |
| 116 | 753 // optimized in v.101 |
| 171 | 754 // char_I_depth_last_deco included in v.101 |
| 116 | 755 |
| 192 | 756 // Compute sim_lead_tissue_limit too, but just once. |
| 757 sim_limit(1.0); | |
| 758 | |
| 759 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 760 if (pres_gradient >= 0) |
| 116 | 761 { |
| 241 | 762 pres_gradient /= 0.29955; // Bar --> stop number; |
| 203 | 763 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> meter : depth for deco |
| 241 | 764 need_stop = 1; // Hit. |
| 765 | |
| 766 // Implement last stop at 4m/5m/6m... | |
| 767 if( temp_depth_limit == 3 ) | |
| 768 temp_depth_limit = char_I_depth_last_deco; | |
| 171 | 769 } |
| 116 | 770 else |
| 241 | 771 temp_depth_limit = 0; |
| 171 | 772 } |
| 212 | 773 |
| 217 | 774 //---- Check gas change -------------------------------------------------- |
| 241 | 775 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
| 776 | |
| 777 return need_stop; | |
| 167 | 778 } |
| 116 | 779 |
| 167 | 780 ////////////////////////////////////////////////////////////////////////////// |
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781 // copy_deco_table |
| 167 | 782 // |
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783 // Buffer the stops, once computed, so we can continue to display them |
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784 // while computing the next set. |
| 167 | 785 // |
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786 static void copy_deco_table(void) |
| 116 | 787 { |
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788 // Copy depth of the first (deepest) stop, because when reversing |
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789 // order, it will be hard to find... |
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790 char_O_first_deco_depth = internal_deco_depth[0]; |
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791 char_O_first_deco_time = internal_deco_time [0]; |
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792 |
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793 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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794 { |
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795 overlay unsigned char x, y; |
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796 |
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797 //---- First: search the first non-null depth |
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798 for(x=31; x != 0; --x) |
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799 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 800 |
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801 //---- Second: copy to output table (in reverse order) |
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802 for(y=0; y<32; y++, --x) |
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803 { |
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804 char_O_deco_depth[y] = internal_deco_depth[x]; |
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805 char_O_deco_time [y] = internal_deco_time [x]; |
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806 |
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807 // Stop only once the last transfer is done. |
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808 if( x == 0 ) break; |
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809 } |
| 116 | 810 |
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811 //---- Third: fill table end with null |
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812 for(y++; y<32; y++) |
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813 { |
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814 char_O_deco_time [y] = 0; |
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815 char_O_deco_depth[y] = 0; |
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816 } |
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817 } |
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818 else //---- Straight copy ------------------------------------------------ |
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819 { |
| 167 | 820 overlay unsigned char x; |
| 821 | |
|
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822 for(x=0; x<32; x++) |
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823 { |
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824 char_O_deco_depth[x] = internal_deco_depth[x]; |
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825 char_O_deco_time [x] = internal_deco_time [x]; |
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826 } |
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827 } |
| 167 | 828 } |
| 116 | 829 |
| 167 | 830 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 831 // temp_tissue_safety // |
| 167 | 832 // |
| 116 | 833 // outsourced in v.102 |
| 167 | 834 // |
| 835 // Apply safety factors for brand ZH-L16 model. | |
| 836 // | |
| 837 static void temp_tissue_safety(void) | |
| 116 | 838 { |
| 197 | 839 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 840 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 841 | |
| 167 | 842 if( char_I_deco_model == 0 ) |
| 116 | 843 { |
| 844 if (temp_tissue < 0.0) | |
| 126 | 845 temp_tissue *= float_desaturation_multiplier; |
| 116 | 846 else |
| 126 | 847 temp_tissue *= float_saturation_multiplier; |
| 116 | 848 } |
| 167 | 849 } |
| 116 | 850 |
| 167 | 851 ////////////////////////////////////////////////////////////////////////////// |
| 852 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 853 // ** THE JUMP-IN CODE ** |
| 854 // ** for the asm code ** | |
| 167 | 855 ////////////////////////////////////////////////////////////////////////////// |
| 856 ////////////////////////////////////////////////////////////////////////////// | |
|
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857 |
| 167 | 858 ////////////////////////////////////////////////////////////////////////////// |
|
169
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859 // Called every 2 seconds during diving. |
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860 // update tissues every time. |
| 184 | 861 // |
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862 // Every 6 seconds (or slower when TTS > 16): |
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863 // - update deco table (char_O_deco_time/depth) with new values. |
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864 // - update ascent time, |
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865 // - set status to zero (so we can check there is new results). |
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866 // |
| 116 | 867 void deco_calc_hauptroutine(void) |
| 868 { | |
|
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869 RESET_C_STACK |
| 116 | 870 calc_hauptroutine(); |
| 871 int_O_desaturation_time = 65535; | |
| 872 } | |
| 873 | |
| 167 | 874 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 875 // Reset decompression model: |
| 876 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 877 // + Reset last stop to 0m | |
| 878 // + Reset all model output. | |
| 116 | 879 void deco_clear_tissue(void) |
| 880 { | |
|
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881 RESET_C_STACK |
| 116 | 882 clear_tissue(); |
| 883 } | |
| 884 | |
| 167 | 885 ////////////////////////////////////////////////////////////////////////////// |
| 886 | |
| 116 | 887 void deco_calc_wo_deco_step_1_min(void) |
| 888 { | |
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889 RESET_C_STACK |
| 116 | 890 calc_wo_deco_step_1_min(); |
| 891 deco_calc_desaturation_time(); | |
| 892 } | |
| 893 | |
| 167 | 894 ////////////////////////////////////////////////////////////////////////////// |
| 895 | |
| 116 | 896 void deco_debug(void) |
| 897 { | |
|
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898 RESET_C_STACK |
| 116 | 899 } |
| 900 | |
| 241 | 901 |
| 902 ////////////////////////////////////////////////////////////////////////////// | |
| 903 // Find current gas in the list (if any). | |
| 904 // | |
| 905 // Input: char_I_deco_N2_ratio[] and He, to detect breathed gas. | |
| 906 // | |
| 907 // Output: sim_gas_depth_used | |
| 908 // | |
| 909 static void gas_switch_find_current(void) | |
| 910 { | |
|
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911 overlay unsigned char j; |
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912 overlay unsigned char N2 = (unsigned char)(N2_ratio * 100 + 0.5); |
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913 overlay unsigned char He = (unsigned char)(He_ratio * 100 + 0.5); |
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914 |
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915 for(j=0; j<5; ++j) |
| 241 | 916 { |
|
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917 // Make sure to detect if we are already breathing some gas in |
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918 // the current list (happends when first gas do have a depth). |
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919 if( N2 == char_I_deco_N2_ratio[j] |
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920 && He == char_I_deco_He_ratio[j] |
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921 ) |
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922 { |
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923 temp_depth_limit = sim_gas_last_depth = char_I_deco_gas_change[j]; |
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924 sim_gas_last_used = j+1; |
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925 break; |
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926 } |
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927 } |
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928 |
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929 // If there is no gas-switch-delay running ? |
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930 if( sim_gas_delay <= sim_dive_mins) |
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931 { |
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932 // Compute current depth: |
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933 overlay unsigned char depth = (unsigned char)((pres_respiration - pres_surface) / 0.09985); |
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934 assert( depth < 130 ); |
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935 |
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936 // And if I'm above the last decostop (with the 3m margin) ? |
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937 if( (sim_gas_last_depth-3) > depth ) |
| 241 | 938 { |
|
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939 for(j=0; j<5; ++j) |
| 241 | 940 { |
|
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941 // And If I am in the range of a valide stop ? |
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942 // (again, with the same 3m margin) |
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943 if( char_I_deco_gas_change[j] |
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944 && depth <= char_I_deco_gas_change[j] |
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945 && depth >= (char_I_deco_gas_change[j] - 3) |
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946 ) |
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947 { |
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948 // Then start gas-switch timer there, |
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949 sim_gas_delay = sim_dive_mins |
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950 + read_custom_function(55); |
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951 |
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952 // And make sure decostop will be recorded at the right depth. |
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953 temp_depth_limit = char_I_deco_gas_change[j]; |
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954 break; |
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955 } |
| 241 | 956 } |
| 957 } | |
|
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958 else |
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959 // Make clear there is no deay anymore. |
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960 sim_gas_delay = 0; |
| 241 | 961 } |
| 962 } | |
| 963 | |
| 167 | 964 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 965 // Find deepest available gas. |
| 201 | 966 // |
| 241 | 967 // Input: temp_depth_limit, |
| 968 // deco_gas_change[] | |
| 969 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
| 212 | 970 // |
| 241 | 971 // RETURNS TRUE if a stop is needed for gas switch. |
| 972 // | |
| 973 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
| 212 | 974 // |
| 241 | 975 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
| 976 // are null), or during the ascent to make sure we are not passing a | |
| 977 // stop (in which case both can be already set). | |
| 978 // | |
| 979 static unsigned char gas_switch_deepest(void) | |
| 201 | 980 { |
| 241 | 981 overlay unsigned char switch_deco = 0, switch_last = 0; |
| 201 | 982 |
| 983 if (char_I_const_ppO2 == 0) | |
| 984 { | |
| 225 | 985 overlay unsigned char j; |
| 986 | |
| 241 | 987 // Loop over all enabled gas, to find the deepest one, |
| 988 // above las gas, but below temp_depth_limit. | |
| 989 for(j=0; j<5; ++j) | |
| 225 | 990 { |
| 241 | 991 // Gas not (yet) allowed ? Skip ! |
| 992 if( temp_depth_limit > deco_gas_change[j] ) | |
| 993 continue; | |
| 994 | |
| 995 // Gas deeper than the current/previous one ? Skip ! | |
| 996 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) | |
| 997 continue; | |
| 998 | |
| 999 // First, or deeper ? | |
|
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1000 if( switch_deco < deco_gas_change[j] ) |
| 241 | 1001 { |
| 1002 switch_deco = deco_gas_change[j]; | |
| 1003 switch_last = j+1; | |
| 1004 } | |
| 225 | 1005 } |
| 201 | 1006 } |
| 1007 | |
| 203 | 1008 // If there is a better gas available |
| 241 | 1009 if( switch_deco ) |
| 201 | 1010 { |
| 241 | 1011 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
| 201 | 1012 |
| 241 | 1013 // Should restart gas-switch delay only when gas do changes... |
| 1014 assert( sim_gas_delay <= sim_dive_mins ); | |
| 217 | 1015 |
| 241 | 1016 sim_gas_last_depth = switch_deco; |
| 1017 sim_gas_last_used = switch_last; | |
| 1018 sim_gas_delay = read_custom_function(55); | |
| 217 | 1019 |
| 241 | 1020 // Apply depth correction ONLY if CF#55 is not null: |
| 1021 if( sim_gas_delay > 0 ) | |
| 225 | 1022 { |
| 241 | 1023 sim_gas_delay += sim_dive_mins; |
| 1024 temp_depth_limit = switch_deco; | |
| 1025 return 1; | |
| 225 | 1026 } |
| 241 | 1027 |
| 1028 return 0; | |
| 217 | 1029 } |
| 1030 | |
| 241 | 1031 sim_gas_delay = 0; |
| 1032 return 0; | |
| 217 | 1033 } |
| 1034 | |
| 1035 ////////////////////////////////////////////////////////////////////////////// | |
| 1036 // Calculate gas switches | |
| 1037 // | |
| 1038 // | |
| 1039 // Input: N2_ratio, He_ratio. | |
| 1040 // sim_gas_last_used | |
| 1041 // | |
| 1042 // Output: calc_N2_ratio, calc_He_ratio | |
| 1043 // | |
| 241 | 1044 static void gas_switch_set(void) |
| 217 | 1045 { |
| 224 | 1046 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
| 217 | 1047 |
| 224 | 1048 if( sim_gas_last_used == 0 ) |
| 1049 { | |
| 1050 calc_N2_ratio = N2_ratio; | |
| 1051 calc_He_ratio = He_ratio; | |
| 1052 } | |
| 1053 else | |
| 1054 { | |
| 1055 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 1056 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 1057 } |
| 201 | 1058 |
| 1059 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 1060 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1061 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1062 } | |
| 1063 | |
| 1064 ////////////////////////////////////////////////////////////////////////////// | |
| 1065 // | |
| 212 | 1066 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 1067 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 1068 // Water-vapor pressure inside lumbs (ppWVapour). | |
| 1069 // | |
| 236 | 1070 // Output: ppN2, ppHe. |
| 212 | 1071 // |
| 1072 static void sim_alveolar_presures(void) | |
| 201 | 1073 { |
| 212 | 1074 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1075 | |
| 1076 //---- CCR mode : deco gas switch ? -------------------------------------- | |
| 201 | 1077 if (char_I_const_ppO2 != 0) |
| 1078 { | |
| 212 | 1079 // In CCR mode, calc_XX_ratio == XX_ratio. |
| 1080 if( temp_deco > deco_ppO2_change ) | |
| 1081 deco_diluent = ((temp_deco - const_ppO2)/(calc_N2_ratio + calc_He_ratio)); | |
| 201 | 1082 else |
| 212 | 1083 deco_diluent = ((temp_deco - deco_ppO2)/(calc_N2_ratio + calc_He_ratio)); |
| 1084 | |
| 1085 if (deco_diluent > temp_deco) | |
| 1086 deco_diluent = temp_deco; | |
| 201 | 1087 } |
| 1088 | |
| 212 | 1089 // Take deco offset into account, but not at surface. |
| 1090 if( deco_diluent > pres_surface ) | |
| 1091 deco_diluent += float_deco_distance; | |
| 1092 | |
| 1093 if( deco_diluent > ppWVapour ) | |
| 201 | 1094 { |
| 236 | 1095 ppN2 = calc_N2_ratio * (deco_diluent - ppWVapour); |
| 201 | 1096 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); |
| 1097 } | |
| 1098 else | |
| 1099 { | |
| 236 | 1100 ppN2 = 0.0; |
| 201 | 1101 ppHe = 0.0; |
| 1102 } | |
| 236 | 1103 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 1104 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 1105 } | |
| 1106 | |
| 1107 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1108 // clear_tissue |
| 1109 // | |
| 165 | 1110 // optimized in v.101 (var_N2_a) |
| 167 | 1111 // |
| 1112 // preload tissues with standard pressure for the given ambient pressure. | |
| 1113 // Note: fixed N2_ratio for standard air. | |
| 201 | 1114 // |
| 167 | 1115 static void clear_tissue(void) |
| 116 | 1116 { |
| 1117 flag_in_divemode = 0; | |
| 1118 int_O_DBS_bitfield = 0; | |
| 1119 int_O_DBS2_bitfield = 0; | |
| 1120 int_O_DBG_pre_bitfield = 0; | |
| 1121 int_O_DBG_post_bitfield = 0; | |
| 1122 char_O_NDL_at_20mtr = 255; | |
| 1123 | |
| 167 | 1124 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1125 N2_ratio = 0.7902; | |
| 212 | 1126 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1127 |
| 167 | 1128 for(ci=0; ci<16; ci++) |
| 126 | 1129 { |
| 197 | 1130 // cycle through the 16 Bühlmann tissues |
| 200 | 1131 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
| 164 | 1132 pres_tissue[ci] = p; |
| 197 | 1133 |
| 184 | 1134 read_buhlmann_coefficients(-1); |
| 165 | 1135 |
| 1136 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 1137 if( p < 0.0 ) |
| 1138 p = 0.0; | |
| 1139 pres_tissue_limit[ci] = p; | |
| 1140 | |
| 197 | 1141 // cycle through the 16 Bühlmann tissues for Helium |
| 167 | 1142 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1143 } // for 0 to 16 |
| 116 | 1144 |
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1145 clear_deco_table(); |
| 126 | 1146 char_O_deco_status = 0; |
| 1147 char_O_nullzeit = 0; | |
| 168 | 1148 int_O_ascenttime = 0; |
| 126 | 1149 char_O_gradient_factor = 0; |
| 1150 char_O_relative_gradient_GF = 0; | |
| 197 | 1151 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 1152 } |
| 116 | 1153 |
| 167 | 1154 ////////////////////////////////////////////////////////////////////////////// |
| 1155 // calc_hauptroutine | |
| 1156 // | |
| 1157 // this is the major code in dive mode calculates: | |
| 116 | 1158 // the tissues, |
| 167 | 1159 // the bottom time, |
| 1160 // and simulates the ascend with all deco stops. | |
| 171 | 1161 // |
| 1162 // The deco_state sequence is : | |
| 1163 // 3 (at surface) | |
| 1164 // +---> 0 : calc nullzeit | |
| 1165 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1166 // | +-> 1 : simulate up to 16min of stops. | |
| 1167 // | +------< not finished | |
| 1168 // +--------< finish | |
| 1169 // | |
| 167 | 1170 static void calc_hauptroutine(void) |
| 116 | 1171 { |
| 241 | 1172 static unsigned char backup_gas_used = 0; |
| 1173 static unsigned char backup_gas_depth = 0; | |
| 217 | 1174 static unsigned char backup_gas_delay = 0; |
| 186 | 1175 |
| 116 | 1176 calc_hauptroutine_data_input(); |
| 1177 | |
| 1178 if(!flag_in_divemode) | |
| 1179 { | |
| 1180 flag_in_divemode = 1; | |
| 1181 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1182 } | |
| 1183 else | |
| 1184 check_pre_dbg(); | |
| 1185 | |
| 1186 calc_hauptroutine_update_tissues(); | |
| 1187 calc_gradient_factor(); | |
| 1188 | |
| 167 | 1189 // toggle between calculation for nullzeit (bottom time), |
| 1190 // deco stops | |
| 1191 // and more deco stops (continue) | |
| 1192 switch( char_O_deco_status ) | |
| 116 | 1193 { |
| 186 | 1194 case 3: //---- At surface: start a new dive ------------------------------ |
| 1195 clear_deco_table(); | |
| 1196 copy_deco_table(); | |
| 200 | 1197 int_O_ascenttime = 0; // Reset DTR. |
| 1198 char_O_nullzeit = 0; // Reset bottom time. | |
| 1199 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 201 | 1200 |
| 217 | 1201 // Values that should be reset just once for the full real dive. |
| 1202 // This is used to record the lowest stop for the whole dive, | |
| 1203 // Including ACCROSS all simulated ascent. | |
| 1204 low_depth = 0; | |
| 1205 | |
| 1206 // Reset gas switch history. | |
| 241 | 1207 backup_gas_used = sim_gas_last_used = 0; |
| 1208 backup_gas_depth = sim_gas_last_depth = 0; | |
| 217 | 1209 backup_gas_delay = sim_gas_delay = 0; |
| 203 | 1210 sim_dive_mins = 0; |
| 1211 break; | |
| 186 | 1212 |
| 167 | 1213 case 0: //---- bottom time ----------------------------------------------- |
| 1214 calc_nullzeit(); | |
| 1215 check_ndl(); | |
| 186 | 1216 char_O_deco_status = 2; // calc ascent next time. |
| 1217 break; | |
| 1218 | |
| 1219 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 203 | 1220 // Check proposed gas at begin of ascent simulation |
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1221 sim_dive_mins = int_I_divemins; // Init current time. |
| 241 | 1222 |
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1223 gas_switch_find_current(); // Lookup for current gas & time. |
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1224 gas_switch_set(); // setup calc_ratio's |
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1225 |
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1226 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1227 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
| 203 | 1228 backup_gas_delay = sim_gas_delay; |
| 186 | 1229 |
| 1230 sim_ascent_to_first_stop(); | |
| 201 | 1231 |
| 1232 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
| 167 | 1233 break; |
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1234 |
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1235 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1236 calc_hauptroutine_calc_deco(); |
| 186 | 1237 |
| 1238 // If simulation is finished, restore the GF low reference, so that | |
| 1239 // next ascent simulation is done from the current depth: | |
| 217 | 1240 if( char_O_deco_status == 0 ) |
| 186 | 1241 { |
| 241 | 1242 sim_gas_last_used = backup_gas_used; |
| 1243 sim_gas_last_depth = backup_gas_depth; | |
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1244 sim_gas_delay = backup_gas_delay; |
| 186 | 1245 } |
| 167 | 1246 break; |
| 116 | 1247 } |
| 167 | 1248 |
| 116 | 1249 check_post_dbg(); |
| 1250 } | |
| 1251 | |
| 167 | 1252 ////////////////////////////////////////////////////////////////////////////// |
| 1253 // calc_hauptroutine_data_input | |
| 1254 // | |
| 1255 // Reset all C-code dive parameters from their ASM-code values. | |
| 1256 // Detect gas change condition. | |
| 1257 // | |
| 116 | 1258 void calc_hauptroutine_data_input(void) |
| 1259 { | |
| 203 | 1260 overlay short int_temp; |
| 126 | 1261 |
| 197 | 1262 pres_respiration = int_I_pres_respiration * 0.001; |
| 1263 pres_surface = int_I_pres_surface * 0.001; | |
| 1264 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1265 He_ratio = char_I_He_ratio * 0.01; | |
| 1266 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1267 |
| 126 | 1268 // ____________________________________________________ |
| 1269 // | |
| 1270 // _____________ G A S _ C H A N G E S ________________ | |
| 1271 // ____________________________________________________ | |
| 1272 | |
| 212 | 1273 // Keep a margin of 150mbar = 1.50m |
| 1274 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1275 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1276 |
| 225 | 1277 deco_gas_change[0] = 0; |
| 1278 deco_gas_change[1] = 0; | |
| 1279 deco_gas_change[2] = 0; | |
| 1280 deco_gas_change[3] = 0; | |
| 1281 deco_gas_change[4] = 0; | |
| 116 | 1282 |
| 203 | 1283 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1284 if(char_I_deco_gas_change[0]) |
| 126 | 1285 { |
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1286 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1287 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1288 } |
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1289 if(char_I_deco_gas_change[1]) |
| 126 | 1290 { |
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1291 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1292 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1293 } |
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1294 if(char_I_deco_gas_change[2]) |
| 126 | 1295 { |
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1296 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1297 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1298 } |
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1299 if(char_I_deco_gas_change[3]) |
| 126 | 1300 { |
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1301 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1302 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1303 } |
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1304 if(char_I_deco_gas_change[4]) |
| 126 | 1305 { |
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1306 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1307 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1308 } |
| 116 | 1309 |
| 197 | 1310 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1311 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
| 1312 + pres_surface | |
| 1313 + float_deco_distance; | |
| 1314 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1315 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1316 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1317 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1318 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1319 GF_delta = GF_high - GF_low; |
| 116 | 1320 } |
| 1321 | |
| 167 | 1322 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1323 // |
| 1324 // | |
| 116 | 1325 void calc_hauptroutine_update_tissues(void) |
| 1326 { | |
| 197 | 1327 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1328 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1329 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1330 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1331 |
| 1332 if (char_I_const_ppO2 == 0) // new in v.101 | |
| 167 | 1333 pres_diluent = pres_respiration; // new in v.101 |
| 186 | 1334 else |
| 1335 { | |
| 167 | 1336 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
| 186 | 1337 if (pres_diluent > pres_respiration) // new in v.101 |
| 1338 pres_diluent = pres_respiration; // new in v.101 | |
| 1339 } | |
| 200 | 1340 if (pres_diluent > ppWVapour) // new in v.101 |
| 116 | 1341 { |
| 236 | 1342 ppN2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 200 | 1343 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 116 | 1344 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1345 } | |
| 167 | 1346 else // new in v.101 |
| 116 | 1347 { |
| 236 | 1348 ppN2 = 0.0; // new in v.101 |
| 200 | 1349 ppHe = 0.0; // new in v.101 |
| 116 | 1350 char_O_diluent = 0; |
| 1351 } | |
| 1352 | |
| 1353 if(!char_I_step_is_1min) | |
| 192 | 1354 calc_tissue(0); |
| 116 | 1355 else |
| 192 | 1356 calc_tissue(1); |
| 186 | 1357 |
| 192 | 1358 // Calc limit for surface, ie. GF_high. |
| 1359 calc_limit(GF_high); | |
| 186 | 1360 |
| 203 | 1361 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 1362 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 192 | 1363 |
| 1364 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1365 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1366 { |
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1367 char_O_nullzeit = 0; // deco necessary |
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1368 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1369 } |
| 171 | 1370 } |
| 1371 | |
| 116 | 1372 |
| 167 | 1373 ////////////////////////////////////////////////////////////////////////////// |
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1374 // Compute stops. |
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1375 // |
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1376 // Note: because this can be very long, break on 16 iterations, and set state |
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1377 // to 0 when finished, or to 1 when needing to continue. |
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1378 // Note: because this might be very long (~ 66 ms by iteration in 1.84beta), |
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1379 // break the loop when total time > 512msec. |
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1380 // |
| 116 | 1381 void calc_hauptroutine_calc_deco(void) |
| 1382 { | |
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1383 overlay unsigned char loop; |
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1384 |
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1385 for(loop = 0; loop < 16; ++loop) |
| 116 | 1386 { |
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1387 // Limit loops to 512ms, using the RTC timer 3: |
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1388 if( tmr3() & (512*32) ) |
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1389 break; |
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1390 |
| 241 | 1391 // Do not ascent while doing a gas switch ? |
| 203 | 1392 if( sim_gas_delay <= sim_dive_mins ) |
| 1393 { | |
| 241 | 1394 if( calc_nextdecodepth() ) |
| 1395 { | |
| 1396 if( temp_depth_limit == 0 ) | |
| 1397 goto Surface; | |
| 116 | 1398 |
| 241 | 1399 //---- We hit a stop at temp_depth_limit --------------------- |
| 1400 temp_deco = temp_depth_limit * 0.09985 // Convert to relative bar, | |
| 1401 + pres_surface; // To absolute. | |
| 1402 update_deco_table(); // Adds a one minute stops. | |
| 1403 } | |
| 1404 else | |
| 1405 { | |
| 1406 //---- No stop ----------------------------------------------- | |
| 1407 temp_deco -= 0.9985; // Ascend 10m, no wait. | |
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1408 |
| 241 | 1409 //---- Finish computations once surface is reached ----------- |
| 1410 if( temp_deco <= pres_surface ) | |
| 1411 { | |
| 1412 Surface: | |
| 1413 copy_deco_table(); | |
| 1414 calc_ascenttime(); | |
| 1415 char_O_deco_status = 0; // calc nullzeit next time. | |
| 1416 return; | |
| 1417 } | |
| 1418 } | |
| 212 | 1419 |
| 1420 } | |
| 1421 else | |
| 241 | 1422 update_deco_table(); // Just pass one minute. |
| 197 | 1423 |
| 241 | 1424 //---- Then update tissue -------------------------------------------- |
| 203 | 1425 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1426 gas_switch_set(); // Apply any simulated gas change, once validated. |
| 212 | 1427 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1428 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1429 } |
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1430 |
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1431 // Surface not reached, need more stops... |
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1432 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1433 } |
| 1434 | |
| 167 | 1435 ////////////////////////////////////////////////////////////////////////////// |
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1436 // Simulation ascention to first deco stop. |
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1437 // |
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1438 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1439 // there is no need to break on more that 16 iterations |
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1440 // (or we are already in deep shit). |
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1441 // |
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1442 void sim_ascent_to_first_stop(void) |
| 116 | 1443 { |
| 171 | 1444 update_startvalues(); |
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1445 clear_deco_table(); |
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1446 |
| 200 | 1447 temp_deco = pres_respiration; // Starts from current real depth. |
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1448 |
| 212 | 1449 // Do we have a gas switch going on ? |
| 1450 if( sim_gas_delay > sim_dive_mins ) | |
| 1451 return; | |
| 1452 | |
| 241 | 1453 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1454 for(;;) |
| 116 | 1455 { |
| 241 | 1456 // Try ascending 1 full minute. |
| 1457 temp_deco -= 0.9985; // 1 min, at 10m/min. ~ 1bar. | |
| 203 | 1458 |
| 212 | 1459 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1460 sim_limit(GF_low); | |
| 1461 | |
| 1462 // Did we reach deepest remaining stop ? | |
| 241 | 1463 if( temp_deco < sim_lead_tissue_limit ) |
| 212 | 1464 { |
| 241 | 1465 temp_deco += 0.9985; // Restore last correct depth, |
| 1466 break; // End fast ascent. | |
| 212 | 1467 } |
| 1468 | |
| 203 | 1469 // Did we reach surface ? |
| 1470 if( temp_deco <= pres_surface ) | |
| 1471 { | |
| 1472 temp_deco = pres_surface; // Yes: finished ! | |
| 1473 break; | |
| 1474 } | |
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1475 |
| 241 | 1476 // Check for gas change below new depth ? |
| 1477 temp_depth_limit = (temp_deco - pres_surface) / 0.09985; | |
| 1478 | |
| 1479 if( gas_switch_deepest() ) | |
| 1480 { | |
| 1481 temp_deco = temp_depth_limit * 0.09985 + pres_surface; | |
| 212 | 1482 break; |
| 241 | 1483 } |
| 171 | 1484 |
| 203 | 1485 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1486 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
| 203 | 1487 sim_tissue(1); // and update tissues for 1 min. |
| 1488 } | |
| 167 | 1489 } |
| 116 | 1490 |
| 167 | 1491 ////////////////////////////////////////////////////////////////////////////// |
| 1492 // calc_tissue | |
| 1493 // | |
| 116 | 1494 // optimized in v.101 |
| 167 | 1495 // |
| 184 | 1496 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1497 { |
| 251 | 1498 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1499 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1500 |
| 126 | 1501 for (ci=0;ci<16;ci++) |
| 1502 { | |
| 184 | 1503 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1504 |
| 126 | 1505 // N2 |
| 236 | 1506 temp_tissue = (ppN2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1507 temp_tissue_safety(); |
| 167 | 1508 pres_tissue[ci] += temp_tissue; |
| 165 | 1509 |
| 126 | 1510 // He |
| 200 | 1511 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1512 temp_tissue_safety(); |
| 167 | 1513 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1514 } |
| 167 | 1515 } |
| 116 | 1516 |
| 167 | 1517 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1518 // calc_limit |
| 167 | 1519 // |
| 192 | 1520 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1521 // |
| 192 | 1522 static void calc_limit(PARAMETER float GF_current) |
| 167 | 1523 { |
| 192 | 1524 char_O_gtissue_no = 255; |
| 1525 calc_lead_tissue_limit = 0.0; | |
| 1526 | |
| 1527 for (ci=0;ci<16;ci++) | |
| 1528 { | |
| 1529 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1530 | |
| 1531 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
| 1532 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
| 1533 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1534 |
| 192 | 1535 // Apply the Eric Baker's varying gradient factor correction. |
| 1536 // Note: the correction factor depends both on GF and b, | |
| 1537 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1538 // so that can change who is the leading gas... | |
| 1539 // Note: Also depends of the GF. So the calcul is different for | |
| 1540 // GF_low, current GF, or GF_high... | |
| 1541 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1542 // hence what would happend at surface, | |
| 1543 // hence at GF_high. | |
| 1544 if( char_I_deco_model == 1 ) | |
| 1545 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1546 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1547 else | |
| 1548 p = (p - var_N2_a) * var_N2_b; | |
| 1549 if( p < 0 ) p = 0; | |
| 1550 | |
| 1551 pres_tissue_limit[ci] = p; | |
| 1552 if( p > calc_lead_tissue_limit ) | |
| 1553 { | |
| 1554 char_O_gtissue_no = ci; | |
| 1555 calc_lead_tissue_limit = p; | |
| 1556 } | |
| 1557 } | |
| 197 | 1558 |
| 1559 assert( char_O_gtissue_no < 16 ); | |
| 1560 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1561 } |
| 1562 | |
| 1563 ////////////////////////////////////////////////////////////////////////////// | |
| 1564 // calc_nullzeit | |
| 1565 // | |
| 1566 // calculates the remaining bottom time | |
| 1567 // | |
| 1568 // unchanged in v.101 | |
| 1569 // | |
| 1570 static void calc_nullzeit(void) | |
| 1571 { | |
| 203 | 1572 overlay unsigned char loop; |
| 200 | 1573 update_startvalues(); |
| 167 | 1574 |
| 116 | 1575 char_O_nullzeit = 0; |
| 167 | 1576 for(loop = 1; loop <= 17; loop++) |
| 116 | 1577 { |
| 1578 backup_sim_pres_tissue(); | |
| 197 | 1579 sim_tissue(2); // 10 min. |
| 192 | 1580 sim_limit(GF_high); |
| 167 | 1581 |
| 192 | 1582 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1583 { |
| 1584 restore_sim_pres_tissue(); | |
| 1585 break; | |
| 1586 } | |
| 1587 // Validate once we know its good. | |
| 1588 char_O_nullzeit += 10; | |
| 167 | 1589 } |
| 1590 | |
| 116 | 1591 if (char_O_nullzeit < 60) |
| 1592 { | |
| 167 | 1593 for(loop=1; loop <= 10; loop++) |
| 116 | 1594 { |
| 197 | 1595 sim_tissue(1); // 1 min |
| 192 | 1596 sim_limit(GF_high); |
| 1597 | |
| 1598 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1599 break; |
| 1600 char_O_nullzeit++; | |
| 167 | 1601 } |
| 185 | 1602 } |
| 1603 } | |
| 116 | 1604 |
| 167 | 1605 ////////////////////////////////////////////////////////////////////////////// |
| 1606 // backup_sim_pres_tissue | |
| 1607 // | |
| 116 | 1608 void backup_sim_pres_tissue(void) |
| 1609 { | |
| 167 | 1610 overlay unsigned char x; |
| 1611 | |
| 1612 for(x = 0; x<32; x++) | |
| 126 | 1613 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1614 } |
| 116 | 1615 |
| 167 | 1616 ////////////////////////////////////////////////////////////////////////////// |
| 1617 // restore_sim_pres_tissue | |
| 1618 // | |
| 116 | 1619 void restore_sim_pres_tissue(void) |
| 1620 { | |
| 167 | 1621 overlay unsigned char x; |
| 1622 | |
| 1623 for(x = 0; x<32; x++) | |
| 126 | 1624 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1625 } |
| 116 | 1626 |
| 167 | 1627 ////////////////////////////////////////////////////////////////////////////// |
| 1628 // calc_ascenttime | |
| 1629 // | |
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1630 static void calc_ascenttime(void) |
| 116 | 1631 { |
| 126 | 1632 if (pres_respiration > pres_surface) |
| 1633 { | |
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1634 overlay unsigned char x; |
| 168 | 1635 |
| 192 | 1636 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
| 1637 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
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1638 if (ascent < 0.0) |
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1639 ascent = 0.0; |
| 203 | 1640 int_O_ascenttime = (unsigned short)(ascent + 0.99); |
| 168 | 1641 |
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1642 for(x=0; x<32 && internal_deco_depth[x]; x++) |
| 203 | 1643 int_O_ascenttime += (unsigned short)internal_deco_time[x]; |
| 126 | 1644 } |
| 1645 else | |
| 168 | 1646 int_O_ascenttime = 0; |
| 167 | 1647 } |
| 116 | 1648 |
| 167 | 1649 ////////////////////////////////////////////////////////////////////////////// |
| 1650 // update_startvalues | |
| 1651 // | |
| 116 | 1652 // updated in v.102 |
| 167 | 1653 // |
| 116 | 1654 void update_startvalues(void) |
| 1655 { | |
| 167 | 1656 overlay unsigned char x; |
| 116 | 1657 |
| 201 | 1658 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1659 for (x = 0;x<16;x++) |
| 1660 { | |
| 1661 sim_pres_tissue[x] = pres_tissue[x]; | |
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1662 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1663 } |
| 197 | 1664 |
| 201 | 1665 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1666 sim_lead_tissue_limit = 0.0; |
| 1667 sim_lead_tissue_no = 255; | |
| 167 | 1668 } |
| 116 | 1669 |
| 167 | 1670 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1671 // sim_tissue |
| 167 | 1672 // |
| 116 | 1673 // optimized in v.101 |
| 167 | 1674 // |
| 1675 // Function very simular to calc_tissue, but: | |
| 1676 // + Use a 1min or 10min period. | |
| 1677 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1678 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1679 { |
| 251 | 1680 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1681 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1682 |
| 192 | 1683 for(ci=0; ci<16; ci++) |
| 126 | 1684 { |
| 184 | 1685 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1686 |
| 126 | 1687 // N2 |
| 236 | 1688 temp_tissue = (ppN2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1689 temp_tissue_safety(); |
| 167 | 1690 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1691 |
| 1692 // He | |
| 200 | 1693 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1694 temp_tissue_safety(); |
| 167 | 1695 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1696 } |
| 167 | 1697 } |
| 116 | 1698 |
| 167 | 1699 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1700 // sim_limit() |
| 1701 // | |
| 1702 // New in v.111 | |
| 1703 // | |
| 1704 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1705 // different depth, because it depends on current gradient factor. | |
| 167 | 1706 // |
| 192 | 1707 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1708 { |
| 212 | 1709 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1710 | |
| 192 | 1711 sim_lead_tissue_limit = 0.0; |
| 212 | 1712 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1713 |
| 1714 for(ci=0; ci<16; ci++) | |
| 1715 { | |
| 241 | 1716 overlay float N2 = sim_pres_tissue[ci]; |
| 1717 overlay float He = (sim_pres_tissue+16)[ci]; | |
| 1718 overlay float p = N2 + He; | |
| 192 | 1719 |
| 1720 read_buhlmann_coefficients(-1); | |
| 241 | 1721 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
| 1722 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 192 | 1723 |
| 1724 // Apply the Eric Baker's varying gradient factor correction. | |
| 1725 // Note: the correction factor depends both on GF and b, | |
| 1726 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1727 // so that can change who is the leading gas... | |
| 1728 // Note: Also depends of the GF_current... | |
| 1729 if( char_I_deco_model == 1 ) | |
| 1730 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1731 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1732 else | |
| 1733 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1734 if( p < 0.0 ) p = 0.0; |
| 192 | 1735 |
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1736 assert( p <= 14.0 ); |
| 241 | 1737 |
| 192 | 1738 sim_pres_tissue_limit[ci] = p; |
| 1739 if( p > sim_lead_tissue_limit ) | |
| 1740 { | |
| 1741 sim_lead_tissue_no = ci; | |
| 1742 sim_lead_tissue_limit = p; | |
| 1743 } | |
| 1744 } // for ci | |
| 197 | 1745 |
| 1746 assert( sim_lead_tissue_no < 16 ); | |
| 237 | 1747 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1748 } |
| 116 | 1749 |
| 167 | 1750 ////////////////////////////////////////////////////////////////////////////// |
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1751 // clear_deco_table |
| 167 | 1752 // |
| 1753 // unchanged in v.101 | |
| 1754 // | |
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1755 static void clear_deco_table(void) |
| 116 | 1756 { |
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1757 overlay unsigned char x; |
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1758 |
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1759 for(x=0; x<32; ++x) |
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1760 { |
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1761 internal_deco_time [x] = 0; |
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1762 internal_deco_depth[x] = 0; |
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1763 } |
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1764 } |
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1765 |
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1766 ////////////////////////////////////////////////////////////////////////////// |
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1767 // update_deco_table |
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1768 // |
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1769 // Add 1 min to current stop. |
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1770 // |
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1771 // Inputs: |
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1772 // temp_depth_limit = stop's depth, in meters. |
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1773 // In/Out: |
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1774 // internal_deco_depth[] : depth (in meters) of each stops. |
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1775 // internal_deco_time [] : time (in minutes) of each stops. |
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1776 // |
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1777 static void update_deco_table() |
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1778 { |
| 192 | 1779 overlay unsigned char x; |
|
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1780 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1781 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1782 |
| 192 | 1783 for(x=0; x<32; ++x) |
| 1784 { | |
| 212 | 1785 // Make sure deco-stops are recorded in order: |
| 1786 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
| 1787 | |
| 200 | 1788 if( internal_deco_depth[x] == temp_depth_limit ) |
| 192 | 1789 { |
| 1790 // Do not overflow (max 255') | |
| 1791 if( internal_deco_time[x] < 255 ) | |
| 1792 { | |
| 1793 internal_deco_time[x]++; | |
| 1794 return; | |
| 1795 } | |
| 1796 // But store extra in the next stop... | |
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1797 } |
| 192 | 1798 |
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1799 if( internal_deco_depth[x] == 0 ) |
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1800 { |
| 192 | 1801 internal_deco_depth[x] = temp_depth_limit; |
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1802 internal_deco_time[x] = 1; |
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1803 return; |
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1804 } |
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1805 } |
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1806 |
| 192 | 1807 // Can't store stops at more than 96m. |
| 1808 // Or stops at less that 3m too. | |
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1809 // Just do nothing with that... |
| 167 | 1810 } |
| 116 | 1811 |
| 167 | 1812 ////////////////////////////////////////////////////////////////////////////// |
| 1813 // calc_gradient_factor | |
| 1814 // | |
| 165 | 1815 // optimized in v.101 (var_N2_a) |
| 116 | 1816 // new code in v.102 |
| 167 | 1817 // |
| 1818 static void calc_gradient_factor(void) | |
| 116 | 1819 { |
| 197 | 1820 overlay float gf; |
| 237 | 1821 |
| 197 | 1822 assert( char_O_gtissue_no < 16 ); |
| 237 | 1823 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1824 |
| 116 | 1825 // tissue > respiration (entsaettigungsvorgang) |
| 1826 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1827 // dh. 0% = respiration == tissue | |
| 1828 // dh. 100% = respiration == limit | |
| 197 | 1829 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
| 1830 if( temp_tissue < pres_respiration ) | |
| 1831 gf = 0.0; | |
| 1832 else | |
| 1833 { | |
| 1834 gf = (temp_tissue - pres_respiration) | |
| 1835 / (temp_tissue - pres_tissue_limit[char_O_gtissue_no]) | |
| 1836 * 100.0; | |
| 1837 if( gf > 255.0 ) gf = 255.0; | |
| 1838 if( gf < 0.0 ) gf = 0.0; | |
| 1839 } | |
| 1840 char_O_gradient_factor = (unsigned char)gf; | |
| 116 | 1841 |
| 1842 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1843 { | |
| 197 | 1844 overlay float rgf; |
| 1845 | |
| 1846 if( low_depth == 0 ) | |
| 1847 rgf = GF_high; | |
| 1848 else | |
| 1849 { | |
| 241 | 1850 overlay float temp1 = low_depth * 0.09985; |
| 197 | 1851 overlay float temp2 = pres_respiration - pres_surface; |
| 186 | 1852 |
| 197 | 1853 if (temp2 <= 0) |
| 1854 rgf = GF_high; | |
| 1855 else if (temp2 >= temp1) | |
| 1856 rgf = GF_low; | |
| 1857 else | |
| 1858 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1859 } | |
| 186 | 1860 |
| 197 | 1861 rgf = gf / rgf; // gf is already in percent |
| 1862 if( rgf < 0.0 ) rgf = 0.0; | |
| 1863 if( rgf > 255.0 ) rgf = 255.0; | |
| 1864 char_O_relative_gradient_GF = (unsigned char)rgf; | |
| 116 | 1865 } // calc relative gradient factor |
| 1866 else | |
| 1867 { | |
| 186 | 1868 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1869 } |
| 167 | 1870 } |
| 116 | 1871 |
| 167 | 1872 ////////////////////////////////////////////////////////////////////////////// |
| 1873 // deco_calc_desaturation_time | |
| 1874 // | |
| 116 | 1875 // FIXED N2_ratio |
| 1876 // unchanged in v.101 | |
| 233 | 1877 // Inputs: int_I_pres_surface, ppWVapour, char_I_desaturation_multiplier |
| 1878 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] | |
| 167 | 1879 // |
| 116 | 1880 void deco_calc_desaturation_time(void) |
| 1881 { | |
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1882 RESET_C_STACK |
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1883 |
| 233 | 1884 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 1885 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 1886 | |
| 237 | 1887 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 1888 pres_surface = int_I_pres_surface * 0.001; |
| 236 | 1889 ppN2 = N2_ratio * (pres_surface - ppWVapour); |
| 126 | 1890 int_O_desaturation_time = 0; |
| 1891 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 233 | 1892 |
| 126 | 1893 for (ci=0;ci<16;ci++) |
| 1894 { | |
| 251 | 1895 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 1896 overlay float temp1; | |
| 1897 overlay float temp2; | |
| 1898 overlay float temp3; | |
| 1899 overlay float temp4; | |
| 1900 | |
| 200 | 1901 overlay float var_N2_halftime = buhlmann_ht[ci]; |
| 1902 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; | |
| 116 | 1903 |
| 126 | 1904 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1905 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1906 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1907 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1908 // N2 | |
| 236 | 1909 temp1 = 1.05 * ppN2; |
| 126 | 1910 temp1 = temp1 - pres_tissue[ci]; |
| 236 | 1911 temp2 = ppN2 - pres_tissue[ci]; |
| 126 | 1912 if (temp2 >= 0.0) |
| 1913 { | |
| 233 | 1914 temp1 = 0.0; |
| 1915 temp2 = 0.0; | |
| 126 | 1916 } |
| 1917 else | |
| 1918 temp1 = temp1 / temp2; | |
| 251 | 1919 if( 0.0 < temp1 && temp1 < 1.0 ) |
| 126 | 1920 { |
| 1921 temp1 = log(1.0 - temp1); | |
| 1922 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1923 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1924 // minus because log is negative | |
| 165 | 1925 temp2 = var_N2_halftime * temp1 / float_desaturation_multiplier; // time necessary (in minutes ) for complete desaturation (see comment about 10 percent) , new in v.101: float_desaturation_multiplier |
| 252 | 1926 |
| 1927 // HERE ==> This assert fails during simulated dives, and should not.... | |
| 1928 assert( temp2 < 28800.0 ); // 480h !! | |
| 126 | 1929 } |
| 1930 else | |
| 1931 { | |
| 233 | 1932 temp1 = 0.0; |
| 1933 temp2 = 0.0; | |
| 126 | 1934 } |
| 116 | 1935 |
| 126 | 1936 // He |
| 167 | 1937 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1938 if (temp3 >= 0.0) |
| 1939 { | |
| 233 | 1940 temp3 = 0.0; |
| 1941 temp4 = 0.0; | |
| 126 | 1942 } |
| 1943 else | |
| 167 | 1944 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 251 | 1945 if( 0.0 < temp3 && temp3 < 1.0 ) |
| 126 | 1946 { |
| 1947 temp3 = log(1.0 - temp3); | |
| 1948 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1949 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1950 // minus because log is negative | |
| 165 | 1951 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1952 } |
| 1953 else | |
| 1954 { | |
| 233 | 1955 temp3 = 0.0; |
| 1956 temp4 = 0.0; | |
| 126 | 1957 } |
| 116 | 1958 |
| 126 | 1959 // saturation_time (for flight) |
| 1960 if (temp4 > temp2) | |
| 203 | 1961 desat_time = (unsigned short)temp4; |
| 126 | 1962 else |
| 203 | 1963 desat_time = (unsigned short)temp2; |
| 252 | 1964 |
| 251 | 1965 if(desat_time > int_O_desaturation_time) |
| 1966 int_O_desaturation_time = desat_time; | |
| 116 | 1967 |
| 126 | 1968 // N2 saturation in multiples of halftime for display purposes |
| 1969 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1970 temp2 = temp2 + 80.0; // set center | |
| 1971 if (temp2 < 0.0) | |
| 1972 temp2 = 0.0; | |
| 1973 if (temp2 > 255.0) | |
| 1974 temp2 = 255.0; | |
| 1975 char_O_tissue_saturation[ci] = (char)temp2; | |
| 233 | 1976 |
| 126 | 1977 // He saturation in multiples of halftime for display purposes |
| 1978 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1979 temp4 = temp4 + 80.0; // set center | |
| 1980 if (temp4 < 0.0) | |
| 1981 temp4 = 0.0; | |
| 1982 if (temp4 > 255.0) | |
| 1983 temp4 = 255.0; | |
| 167 | 1984 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1985 } // for |
| 167 | 1986 } |
| 116 | 1987 |
| 167 | 1988 ////////////////////////////////////////////////////////////////////////////// |
| 1989 // calc_wo_deco_step_1_min | |
| 1990 // | |
| 116 | 1991 // FIXED N2 Ratio |
| 1992 // optimized in v.101 (...saturation_multiplier) | |
| 1993 // desaturation slowed down to 70,42% | |
| 167 | 1994 // |
| 1995 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1996 { |
| 251 | 1997 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 1998 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
| 1999 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
| 2000 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2001 | |
| 116 | 2002 if(flag_in_divemode) |
| 2003 { | |
| 2004 flag_in_divemode = 0; | |
| 2005 set_dbg_end_of_dive(); | |
| 2006 } | |
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2007 |
| 126 | 2008 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 233 | 2009 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
| 2010 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
| 236 | 2011 ppN2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body |
| 200 | 2012 ppHe = 0.0; |
| 126 | 2013 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 2014 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 2015 |
| 192 | 2016 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 2017 |
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2018 clear_deco_table(); |
| 200 | 2019 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 2020 char_O_nullzeit = 0; |
| 168 | 2021 int_O_ascenttime = 0; |
| 126 | 2022 calc_gradient_factor(); |
| 167 | 2023 } |
| 126 | 2024 |
| 167 | 2025 ////////////////////////////////////////////////////////////////////////////// |
| 2026 ////////////////////////////////////////////////////////////////////////////// | |
| 2027 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 2028 ////////////////////////////////////////////////////////////////////////////// | |
| 2029 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 2030 |
| 184 | 2031 #ifndef CROSS_COMPILE |
| 116 | 2032 void deco_hash(void) |
| 2033 { | |
| 167 | 2034 overlay unsigned char md_i, md_j; // Loop index. |
| 2035 overlay unsigned char md_t; | |
| 2036 overlay unsigned char md_buffer[16]; | |
| 2037 overlay unsigned char md_temp; | |
| 203 | 2038 overlay unsigned short md_pointer; |
| 167 | 2039 |
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2040 RESET_C_STACK |
| 126 | 2041 |
| 2042 // init | |
| 164 | 2043 for(md_i=0;md_i<16;md_i++) |
| 126 | 2044 { |
| 2045 md_state[md_i] = 0; | |
| 164 | 2046 char_O_hash[md_i] = 0; |
| 126 | 2047 } // for md_i 16 |
| 116 | 2048 |
| 126 | 2049 _asm |
| 167 | 2050 movlw 0x01 // md_pi address. |
| 2051 movwf TBLPTRU,0 | |
| 2052 movlw 0x7E | |
| 2053 movwf TBLPTRH,0 | |
| 2054 movlw 0x00 | |
| 2055 movwf TBLPTRL,0 | |
| 126 | 2056 _endasm; |
| 165 | 2057 md_i = 0; |
| 2058 do { | |
| 126 | 2059 _asm |
| 2060 TBLRDPOSTINC | |
| 2061 movff TABLAT,md_temp | |
| 2062 _endasm | |
| 165 | 2063 md_pi_subst[md_i++] = md_temp; |
| 2064 } while( md_i != 0 ); | |
| 2065 | |
| 126 | 2066 _asm |
| 167 | 2067 movlw 0x00 |
| 2068 movwf TBLPTRU,0 | |
| 2069 movlw 0x00 | |
| 2070 movwf TBLPTRH,0 | |
| 2071 movlw 0x00 | |
| 2072 movwf TBLPTRL,0 | |
| 126 | 2073 _endasm |
| 167 | 2074 |
| 126 | 2075 // cycle buffers |
| 2076 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 2077 { | |
| 2078 md_t = 0; | |
| 2079 for (md_i=0;md_i<16;md_i++) | |
| 2080 { | |
| 2081 if(md_pointer == 9) | |
| 164 | 2082 md_temp = char_O_hash[md_i]; |
| 126 | 2083 else |
| 2084 { | |
| 2085 _asm | |
| 167 | 2086 TBLRDPOSTINC |
| 2087 movff TABLAT,md_temp | |
| 126 | 2088 _endasm |
| 2089 } // else | |
| 167 | 2090 |
| 2091 md_buffer[md_i] = md_temp; | |
| 186 | 2092 md_state[md_i+16] = md_temp; |
| 2093 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2094 } // for md_i 16 |
| 2095 | |
| 2096 for (md_i=0;md_i<18;md_i++) | |
| 2097 { | |
| 2098 for (md_j=0;md_j<48;md_j++) | |
| 2099 { | |
| 167 | 2100 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2101 md_t = md_state[md_j]; |
| 2102 } // for md_j 48 | |
| 2103 md_t = (unsigned char)(md_t+1); | |
| 2104 } // for md_i 18 | |
| 164 | 2105 md_t = char_O_hash[15]; |
| 126 | 2106 |
| 2107 for (md_i=0;md_i<16;md_i++) | |
| 2108 { | |
| 167 | 2109 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2110 md_t = char_O_hash[md_i]; |
| 126 | 2111 } // for md_i 16 |
| 2112 } // for md_pointer | |
| 116 | 2113 } // void deco_hash(void) |
| 184 | 2114 #endif |
| 116 | 2115 |
| 167 | 2116 ////////////////////////////////////////////////////////////////////////////// |
| 2117 // deco_clear_CNS_fraction | |
| 2118 // | |
| 116 | 2119 // new in v.101 |
| 167 | 2120 // |
| 116 | 2121 void deco_clear_CNS_fraction(void) |
| 2122 { | |
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2123 RESET_C_STACK |
| 237 | 2124 |
| 126 | 2125 CNS_fraction = 0.0; |
| 2126 char_O_CNS_fraction = 0; | |
| 167 | 2127 } |
| 116 | 2128 |
| 167 | 2129 ////////////////////////////////////////////////////////////////////////////// |
| 2130 // deco_calc_CNS_fraction | |
| 2131 // | |
| 116 | 2132 // new in v.101 |
| 2133 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 2134 // |
| 116 | 2135 // Input: char_I_actual_ppO2 |
| 2136 // Output: char_O_CNS_fraction | |
| 2137 // Uses and Updates: CNS_fraction | |
| 2138 // Uses: acutal_ppO2 | |
| 167 | 2139 // |
| 116 | 2140 void deco_calc_CNS_fraction(void) |
| 2141 { | |
| 167 | 2142 overlay float actual_ppO2; |
| 126 | 2143 RESET_C_STACK |
| 167 | 2144 |
| 237 | 2145 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); |
| 2146 assert( char_I_actual_ppO2 > 15 ); | |
| 2147 | |
| 126 | 2148 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 2149 |
| 126 | 2150 if (char_I_actual_ppO2 < 50) |
| 2151 CNS_fraction = CNS_fraction;// no changes | |
| 2152 else if (char_I_actual_ppO2 < 60) | |
| 2153 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 2154 else if (char_I_actual_ppO2 < 70) | |
| 2155 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 2156 else if (char_I_actual_ppO2 < 80) | |
| 2157 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 2158 else if (char_I_actual_ppO2 < 90) | |
| 2159 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 2160 else if (char_I_actual_ppO2 < 110) | |
| 2161 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 2162 else if (char_I_actual_ppO2 < 150) | |
| 2163 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 2164 else if (char_I_actual_ppO2 < 160) | |
| 2165 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 2166 else if (char_I_actual_ppO2 < 165) | |
| 2167 CNS_fraction = 0.000755 + CNS_fraction; // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity... Formula (A1) based on value for 1.55 and c=20 | |
| 2168 else if (char_I_actual_ppO2 < 170) | |
| 2169 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 2170 else if (char_I_actual_ppO2 < 175) | |
| 2171 CNS_fraction = 0.00136 + CNS_fraction; | |
| 2172 else if (char_I_actual_ppO2 < 180) | |
| 2173 CNS_fraction = 0.00180 + CNS_fraction; | |
| 2174 else if (char_I_actual_ppO2 < 185) | |
| 2175 CNS_fraction = 0.00237 + CNS_fraction; | |
| 2176 else if (char_I_actual_ppO2 < 190) | |
| 2177 CNS_fraction = 0.00310 + CNS_fraction; | |
| 2178 else if (char_I_actual_ppO2 < 195) | |
| 2179 CNS_fraction = 0.00401 + CNS_fraction; | |
| 2180 else if (char_I_actual_ppO2 < 200) | |
| 2181 CNS_fraction = 0.00517 + CNS_fraction; | |
| 2182 else if (char_I_actual_ppO2 < 230) | |
| 2183 CNS_fraction = 0.0209 + CNS_fraction; | |
| 2184 else | |
| 2185 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 2186 |
| 126 | 2187 if (CNS_fraction > 2.5) |
| 2188 CNS_fraction = 2.5; | |
| 2189 if (CNS_fraction < 0.0) | |
| 2190 CNS_fraction = 0.0; | |
| 2191 | |
| 2192 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2193 } |
| 116 | 2194 |
| 167 | 2195 ////////////////////////////////////////////////////////////////////////////// |
| 2196 // deco_calc_CNS_decrease_15min | |
| 2197 // | |
| 116 | 2198 // new in v.101 |
| 167 | 2199 // |
| 116 | 2200 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2201 // (Used in sleepmode, for low battery mode). |
| 167 | 2202 // |
| 116 | 2203 // Output: char_O_CNS_fraction |
| 2204 // Uses and Updates: CNS_fraction | |
| 167 | 2205 // |
| 116 | 2206 void deco_calc_CNS_decrease_15min(void) |
| 2207 { | |
| 237 | 2208 RESET_C_STACK |
| 2209 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
| 2210 | |
| 126 | 2211 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2212 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2213 } | |
| 116 | 2214 |
| 167 | 2215 ////////////////////////////////////////////////////////////////////////////// |
| 2216 // deco_calc_percentage | |
| 2217 // | |
| 116 | 2218 // new in v.101 |
| 167 | 2219 // |
| 116 | 2220 // calculates int_I_temp * char_I_temp / 100 |
| 2221 // output is int_I_temp | |
| 200 | 2222 // |
| 2223 // Used to compute NoFly remaining time. | |
|
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2224 // |
| 116 | 2225 void deco_calc_percentage(void) |
| 2226 { | |
|
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2227 RESET_C_STACK |
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2228 |
| 237 | 2229 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 2230 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
| 2231 | |
|
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2232 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2233 |
| 2234 assert( int_I_temp < 1440 ); // Less than 24h... | |
|
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2235 } |
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2236 |
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2237 |
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2238 ////////////////////////////////////////////////////////////////////////////// |
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2239 // deco_gas_volumes |
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2240 // |
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2241 // new in v.111 |
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2242 // |
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2243 // calculates volumes for each gas. |
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2244 // |
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2245 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
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2246 // Gas list. |
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2247 // char_I_first_gas is the bottom gas. |
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2248 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
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2249 // CF#54 == TRUE if shallowest stop first. |
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2250 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) |
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2251 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0). |
| 224 | 2252 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
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2253 // |
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2254 void deco_gas_volumes(void) |
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2255 { |
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2256 overlay float volumes[5]; |
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2257 overlay float ascent_usage; |
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2258 overlay unsigned char i, deepest_first; |
| 241 | 2259 overlay unsigned char gas; |
|
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2260 RESET_C_STACK |
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2261 |
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2262 //---- initialize with bottom consumption -------------------------------- |
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2263 for(i=0; i<5; ++i) // Nothing yet... |
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2264 volumes[i] = 0.0; |
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2265 |
| 241 | 2266 assert(1 <= char_I_first_gas && char_I_first_gas <= 5); |
| 2267 gas = char_I_first_gas - 1; | |
| 2268 | |
| 2269 volumes[gas] | |
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2270 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. |
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2271 * char_I_bottom_time // in minutes. |
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2272 * read_custom_function(56) // In deci-liter/minutes. |
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2273 * 0.1; // deci-liters --> liters. |
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2274 |
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2275 //---- Ascent usage ------------------------------------------------------ |
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2276 |
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2277 deepest_first = read_custom_function(54) == 0; |
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2278 ascent_usage = read_custom_function(57) * 0.1; // In liter/minutes. |
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2279 |
| 224 | 2280 // Usage up to the first stop: |
| 2281 // - computed at MAX depth (easier, safer), | |
|
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2282 // - with an ascent speed of 10m/min. |
| 224 | 2283 // - with ascent litter / minutes. |
|
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2284 // - still using bottom gas: |
| 241 | 2285 volumes[gas] |
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2286 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar |
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2287 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) |
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2288 * ascent_usage; // Consumption ( xxx / min @ 1 bar) |
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2289 |
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2290 for(i=0; i<32; ++i) |
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2291 { |
| 241 | 2292 overlay unsigned char j; |
|
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2293 overlay unsigned char depth, time, ascent; |
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2294 |
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2295 // Manage stops in reverse order (CF#54) |
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2296 if( deepest_first ) |
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2297 { |
| 241 | 2298 time = char_O_deco_time[i]; |
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2299 if( time == 0 ) break; // End of table: done. |
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2300 |
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2301 ascent = depth = char_O_deco_depth[i]; |
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2302 if( i < 31 ) |
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2303 ascent -= char_O_deco_depth[i+1]; |
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2304 } |
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2305 else |
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2306 { |
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2307 time = char_O_deco_time[31-i]; |
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2308 if( time == 0 ) continue; // not yet: still searh table. |
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2309 |
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2310 ascent = depth = char_O_deco_depth[31-i]; |
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2311 if( i < 31 ) |
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2312 ascent -= char_O_deco_depth[30-i]; |
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2313 } |
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2314 |
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2315 // Gas switch depth ? |
| 241 | 2316 for(j=0; j<5; ++j) |
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2317 { |
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2318 if( depth <= char_I_deco_gas_change[j] ) |
| 241 | 2319 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 224 | 2320 gas = j; |
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2321 } |
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2322 |
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2323 // usage during stop: |
| 224 | 2324 // Note: because first gas is not in there, increment gas+1 |
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2325 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. |
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2326 * time // in minutes. |
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2327 * ascent_usage // in xxx / min @ 1bar. |
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2328 // Plus usage during ascent to the next stop, at 10m/min. |
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2329 + (depth*0.1 + 1.0) |
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2330 * ascent*0.1 // meter --> min |
| 225 | 2331 * ascent_usage; |
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2332 } |
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2333 |
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2334 //---- convert results for the ASM interface ----------------------------- |
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2335 for(i=0; i<5; ++i) |
| 224 | 2336 if( volumes[i] > 6553.4 ) |
| 2337 int_O_gas_volumes[i] = 65535; | |
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2338 else |
| 224 | 2339 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
| 116 | 2340 } |
| 2341 | |
| 167 | 2342 ////////////////////////////////////////////////////////////////////////////// |
| 2343 | |
| 116 | 2344 void deco_push_tissues_to_vault(void) |
| 2345 { | |
| 167 | 2346 overlay unsigned char x; |
|
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2347 RESET_C_STACK |
| 167 | 2348 |
| 116 | 2349 cns_vault = CNS_fraction; |
| 167 | 2350 for (x=0;x<32;x++) |
| 2351 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2352 } |
| 167 | 2353 |
| 116 | 2354 void deco_pull_tissues_from_vault(void) |
| 2355 { | |
| 167 | 2356 overlay unsigned char x; |
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2357 RESET_C_STACK |
| 167 | 2358 |
| 116 | 2359 CNS_fraction = cns_vault; |
| 167 | 2360 for (x=0;x<32;x++) |
| 2361 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2362 } |
| 2363 | |
| 167 | 2364 ////////////////////////////////////////////////////////////////////////////// |
| 2365 // | |
| 184 | 2366 #ifndef CROSS_COMPILE |
| 2367 void main() {} | |
| 2368 #endif |