Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 276:02303915c199
BUGFIX CF16 applyed to diluant in CCR mode.
| author | JeanDo |
|---|---|
| date | Mon, 18 Apr 2011 01:19:06 +0200 |
| parents | 4310ab395dbe |
| children | 17aab4ca0547 |
| rev | line source |
|---|---|
| 116 | 1 // ************************************************************** |
| 2 // p2_deco.c | |
| 3 // | |
| 4 // Created on: 12.05.2009 | |
| 5 // Author: chsw | |
| 6 // | |
| 7 // ************************************************************** | |
| 8 | |
| 9 ////////////////////////////////////////////////////////////////////////////// | |
| 10 // OSTC - diving computer code | |
| 11 // Copyright (C) 2008 HeinrichsWeikamp GbR | |
| 12 // | |
| 13 // This program is free software: you can redistribute it and/or modify | |
| 14 // it under the terms of the GNU General Public License as published by | |
| 15 // the Free Software Foundation, either version 3 of the License, or | |
| 16 // (at your option) any later version. | |
| 17 // | |
| 18 // This program is distributed in the hope that it will be useful, | |
| 19 // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 21 // GNU General Public License for more details. | |
| 22 // | |
| 23 // You should have received a copy of the GNU General Public License | |
| 24 // along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 25 // | |
| 26 ////////////////////////////////////////////////////////////////////////////// | |
| 27 | |
| 28 // ***************************** | |
| 29 // ** I N T R O D U C T I O N ** | |
| 30 // ***************************** | |
| 31 // | |
| 32 // OSTC | |
| 33 // | |
| 34 // code: | |
| 35 // p2_deco_main_c_v101.c | |
| 36 // part2 of the OSTC code | |
| 37 // code with constant O2 partial pressure routines | |
| 38 // under construction !! | |
| 39 // | |
| 40 // summary: | |
| 41 // decompression routines | |
| 42 // for the OSTC experimental project | |
| 43 // written by Christian Weikamp | |
| 44 // last revision __________ | |
| 45 // comments added _________ | |
| 46 // | |
| 47 // additional files: | |
| 48 // p2_tables_v100.romdata (other files) | |
| 49 // 18f4685_ostc_v100.lkr (linker script) | |
| 50 // | |
| 51 // history: | |
| 52 // 01/03/08 v100: first release candidate | |
| 53 // 03/13/08 v101: start of programming ppO2 code | |
| 54 // 03/13/25 v101a: backup of interrim version with ppO2 calculation | |
| 55 // 03/13/25 v101: open circuit gas change during deco | |
| 56 // 03/13/25 v101: CNS_fraction calculation | |
| 57 // 03/13/26 v101: optimization of tissue calc routines | |
| 58 // 07/xx/08 v102a: debug of bottom time routine | |
| 59 // 09/xx/08 v102d: Gradient Factor Model implemenation | |
| 60 // 10/10/08 v104: renamed to build v103 for v118 stable | |
| 171 | 61 // 10/14/08 v104: integration of char_I_depth_last_deco for Gradient Model |
| 116 | 62 // 03/31/09 v107: integration of FONT Incon24 |
| 63 // 05/23/10 v109: 5 gas changes & 1 min timer | |
| 64 // 07/13/10 v110: cns vault added | |
| 65 // 12/25/10 v110: split in three files (deco.c, main.c, definitions.h) | |
| 163 | 66 // 2011/01/20: [jDG] Create a common file included in ASM and C code. |
| 167 | 67 // 2011/01/23: [jDG] Added read_custom_function(). |
| 203 | 68 // 2011/01/24: [jDG] Make ascenttime an short. No more overflow! |
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69 // 2011/01/25: [jDG] Fusion deco array for both models. |
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70 // 2011/01/25: [jDG] Use CF(54) to reverse deco order. |
| 193 | 71 // 2011/02/11: [jDG] Reworked gradient-factor implementation. |
| 197 | 72 // 2011/02/13: [jDG] CF55 for additional gas switch delay in decoplan. |
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73 // 2011/02/15: [jDG] Fixed inconsistencies introduced by gas switch delays. |
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74 // 2011/03/21: [jDG] Added gas consumption (CF56 & CF57) evaluation for OCR mode. |
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75 // 2011/04/10: [jDG] Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco() |
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76 // 2011/04/15: [jDG] Store low_depth in 32bits (w/o rounding), for a better stability. |
| 116 | 77 // |
| 167 | 78 // TODO: |
| 79 // + Allow to abort MD2 calculation (have to restart next time). | |
| 80 // | |
| 81 // Literature: | |
| 200 | 82 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 83 // 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 |
| 84 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 85 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 86 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 87 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 88 // |
| 89 // | |
| 116 | 90 |
| 91 // ********************* | |
| 92 // ** I N C L U D E S ** | |
| 93 // ********************* | |
| 94 #include <math.h> | |
| 167 | 95 |
| 192 | 96 // *********************************************** |
| 97 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 98 // *********************************************** | |
| 99 | |
| 100 #include "p2_definitions.h" | |
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101 #define TEST_MAIN |
| 192 | 102 #include "shared_definitions.h" |
| 103 | |
| 200 | 104 // Water vapour partial pressure in the lumb. |
| 233 | 105 #define ppWVapour 0.0627 |
| 200 | 106 |
| 167 | 107 // ************************* |
| 108 // ** P R O T O T Y P E S ** | |
| 109 // ************************* | |
| 110 | |
| 111 static void calc_hauptroutine(void); | |
| 112 static void calc_nullzeit(void); | |
| 113 | |
| 192 | 114 static void calc_tissue(PARAMETER unsigned char period); |
| 258 | 115 static void calc_limit(void); |
| 192 | 116 |
| 167 | 117 static void clear_tissue(void); |
| 118 static void calc_ascenttime(void); | |
| 119 static void update_startvalues(void); | |
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120 static void clear_deco_table(void); |
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121 static void update_deco_table(void); |
| 192 | 122 |
| 123 static void backup_sim_pres_tissue(void); | |
| 124 static void restore_sim_pres_tissue(void); | |
| 125 static void sim_tissue(PARAMETER unsigned char period); | |
| 126 static void sim_limit(PARAMETER float GF_current); | |
| 167 | 127 static void calc_gradient_factor(void); |
| 128 static void calc_wo_deco_step_1_min(void); | |
| 129 | |
| 130 static void calc_hauptroutine_data_input(void); | |
| 131 static void calc_hauptroutine_update_tissues(void); | |
| 132 static void calc_hauptroutine_calc_deco(void); | |
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133 static void sim_ascent_to_first_stop(void); |
| 167 | 134 |
| 241 | 135 static unsigned char gas_switch_deepest(void); |
| 136 static void gas_switch_set(void); | |
| 217 | 137 |
| 241 | 138 static unsigned char calc_nextdecodepth(void); |
| 116 | 139 |
| 200 | 140 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 141 #pragma udata bank4=0x400 |
| 116 | 142 |
| 143 static float temp_limit; | |
| 144 static float GF_low; | |
| 145 static float GF_high; | |
| 146 static float GF_delta; | |
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147 static float low_depth; // Depth of deepest stop |
| 192 | 148 static float locked_GF_step; // GF_delta / low_depth |
| 149 | |
| 150 static unsigned char temp_depth_limit; | |
| 171 | 151 |
| 192 | 152 // Simulation context: used to predict ascent. |
| 153 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 154 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 155 |
| 192 | 156 // Real context: what we are doing now. |
| 157 static float calc_lead_tissue_limit; // | |
| 116 | 158 |
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159 static unsigned char internal_deco_time[32]; |
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160 static unsigned char internal_deco_depth[32]; |
| 116 | 161 |
| 162 static float cns_vault; | |
| 163 static float pres_tissue_vault[32]; | |
| 164 | |
| 163 | 165 //---- Bank 5 parameters ----------------------------------------------------- |
| 166 #pragma udata bank5=0x500 | |
| 167 | |
| 167 | 168 static unsigned char ci; |
| 116 | 169 static float pres_respiration; |
| 170 static float pres_surface; | |
| 171 static float temp_deco; | |
| 236 | 172 static float ppN2; |
| 200 | 173 static float ppHe; |
| 116 | 174 static float temp_tissue; |
| 200 | 175 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 176 static float He_ratio; // Breathed gas helium ratio. | |
| 177 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 178 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 179 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 180 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 181 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 182 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 183 |
| 164 | 184 static float pres_diluent; // new in v.101 |
| 185 static float const_ppO2; // new in v.101 | |
| 186 static float deco_ppO2_change; // new in v.101 | |
| 187 static float deco_ppO2; // new in v.101 | |
| 116 | 188 |
| 241 | 189 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
| 190 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
| 203 | 191 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 192 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 193 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 194 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 195 static float CNS_fraction; // new in v.101 | |
| 196 static float float_saturation_multiplier; // new in v.101 | |
| 197 static float float_desaturation_multiplier; // new in v.101 | |
| 167 | 198 static float float_deco_distance; // new in v.101 |
| 199 static char flag_in_divemode; // new in v.108 | |
| 200 | |
| 225 | 201 static unsigned char deco_gas_change[5]; // new in v.109 |
| 167 | 202 |
| 163 | 203 //---- Bank 6 parameters ----------------------------------------------------- |
| 204 #pragma udata bank6=0x600 | |
| 116 | 205 |
| 197 | 206 float pres_tissue[32]; |
| 116 | 207 |
| 163 | 208 //---- Bank 7 parameters ----------------------------------------------------- |
| 209 #pragma udata bank7=0x700 | |
| 210 | |
| 197 | 211 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
| 116 | 212 static float sim_pres_tissue_backup[32]; |
| 213 | |
| 163 | 214 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 215 #pragma udata bank8=0x800 |
| 163 | 216 |
| 116 | 217 static char md_pi_subst[256]; |
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218 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 219 |
| 163 | 220 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 221 #pragma udata bank9=0x900 |
| 116 | 222 |
| 163 | 223 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 224 |
| 164 | 225 // internal, dbg: |
| 167 | 226 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 227 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 228 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 224 | 229 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
| 230 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
| 164 | 231 static float DBG_pres_surface; // new in v.108 |
| 232 static float DBG_GF_low; // new in v.108 | |
| 233 static float DBG_GF_high; // new in v.108 | |
| 234 static float DBG_const_ppO2; // new in v.108 | |
| 235 static float DBG_deco_ppO2_change; // new in v.108 | |
| 236 static float DBG_deco_ppO2; // new in v.108 | |
| 237 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 238 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 239 static float DBG_float_deco_distance; // new in v.108 | |
| 240 static float DBG_N2_ratio; // new in v.108 | |
| 241 static float DBG_He_ratio; // new in v.108 | |
| 242 | |
| 167 | 243 ////////////////////////////////////////////////////////////////////////////// |
| 244 ////////////////////////////////////////////////////////////////////////////// | |
| 245 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 246 ////////////////////////////////////////////////////////////////////////////// | |
| 247 ////////////////////////////////////////////////////////////////////////////// | |
| 248 // | |
| 249 // End of PROM code is 17F00, So push tables on PROM top... | |
| 250 // | |
| 251 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 252 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 253 |
| 167 | 254 // Magic table to compute the MD2 HASH |
| 255 // | |
| 256 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 257 rom const rom unsigned short md_pi[] = |
| 116 | 258 { |
| 259 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 260 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 261 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 262 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 263 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 264 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 265 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 266 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 267 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 268 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 269 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 270 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 271 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 272 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 273 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 274 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 275 }; | |
| 276 | |
| 167 | 277 ////////////////////////////////////////////////////////////////////////////// |
| 278 ////////////////////////////////////////////////////////////////////////////// | |
| 279 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 280 ////////////////////////////////////////////////////////////////////////////// | |
| 281 ////////////////////////////////////////////////////////////////////////////// | |
| 282 // | |
| 116 | 283 // all new in v.102 |
| 284 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 285 | |
| 286 #pragma code p2_deco = 0x0C000 | |
| 287 | |
| 167 | 288 ////////////////////////////////////////////////////////////////////////////// |
| 289 // DBS - debug on start of dive | |
| 290 // | |
| 291 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 292 { |
| 167 | 293 overlay char i; // Local loop index. |
| 294 | |
| 295 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 296 int_O_DBS_bitfield = 0; |
| 297 int_O_DBS2_bitfield = 0; | |
| 298 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 299 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 300 else | |
| 301 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 302 int_O_DBG_post_bitfield = 0; | |
| 167 | 303 |
| 304 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 305 char_O_NDL_at_20mtr = 255; |
| 306 | |
| 167 | 307 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 308 DBG_N2_ratio = N2_ratio; |
| 309 DBG_He_ratio = He_ratio; | |
| 310 DBG_char_I_deco_model = char_I_deco_model; | |
| 311 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 312 DBG_pres_surface = pres_surface; | |
| 313 DBG_GF_low = GF_low; | |
| 314 DBG_GF_high = GF_high; | |
| 315 DBG_const_ppO2 = const_ppO2; | |
| 316 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 317 DBG_deco_ppO2 = deco_ppO2; | |
| 224 | 318 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 319 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 320 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 321 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 322 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 323 DBG_float_deco_distance = float_deco_distance; | |
| 324 | |
| 167 | 325 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 326 if(char_I_deco_model) |
| 327 int_O_DBS_bitfield |= DBS_mode; | |
| 328 if(const_ppO2) | |
| 329 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 330 for(i = 16; i < 32; i++) |
| 331 if(pres_tissue[i]) | |
| 116 | 332 int_O_DBS_bitfield |= DBS_HE_sat; |
| 333 if(deco_ppO2_change) | |
| 334 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 335 if(float_saturation_multiplier < 0.99) | |
| 336 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 337 if(float_saturation_multiplier > 1.3) | |
| 338 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 339 if(GF_low < 0.19) | |
| 340 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 341 if(GF_low > 1.01) | |
| 342 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 343 if(GF_high < 0.6) | |
| 344 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 345 if(GF_high > 1.01) | |
| 346 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 347 if((N2_ratio + He_ratio) > 0.95) | |
| 348 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 349 if((N2_ratio + He_ratio) < 0.05) | |
| 350 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 351 if(float_deco_distance > 0.25) | |
| 352 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 353 if(char_I_depth_last_deco > 8) | |
| 354 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 355 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 356 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 357 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 358 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 359 if(pres_respiration > 3.0) | |
| 360 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 361 if(pres_surface - pres_respiration > 0.2) | |
| 362 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 363 if(pres_surface < 0.75) | |
| 364 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 365 if(pres_surface > 1.11) | |
| 366 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 367 if(float_desaturation_multiplier < 0.70) | |
| 368 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 369 if(float_desaturation_multiplier > 1.01) | |
| 370 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 371 if(GF_low > GF_high) | |
| 372 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 373 } | |
| 374 | |
| 167 | 375 ////////////////////////////////////////////////////////////////////////////// |
| 376 // DBG - set DBG to end_of_dive | |
| 377 // | |
| 378 static void set_dbg_end_of_dive(void) | |
| 116 | 379 { |
| 380 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 381 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 382 } | |
| 383 | |
| 167 | 384 ////////////////////////////////////////////////////////////////////////////// |
| 385 // DBG - NDL at first 20 m. hit | |
| 386 // | |
| 387 static void check_ndl(void) | |
| 116 | 388 { |
| 167 | 389 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 390 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 391 ) | |
| 116 | 392 { |
| 167 | 393 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 394 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 395 char_O_NDL_at_20mtr = 254; |
| 116 | 396 } |
| 397 } | |
| 398 | |
| 167 | 399 ////////////////////////////////////////////////////////////////////////////// |
| 400 // DBG - multi main during dive | |
| 401 // | |
| 184 | 402 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 403 { |
| 203 | 404 overlay unsigned short temp_DBS = 0; |
| 200 | 405 overlay unsigned char i; // Local loop index. |
| 167 | 406 |
| 116 | 407 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 408 temp_DBS |= DBG_c_gas; | |
| 409 if(DBG_const_ppO2 != const_ppO2) | |
| 410 temp_DBS |= DBG_c_ppO2; | |
| 167 | 411 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 412 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 413 ) | |
| 116 | 414 temp_DBS |= DBG_CdeSAT; |
| 415 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 416 temp_DBS |= DBG_C_MODE; | |
| 417 if(DBG_pres_surface != pres_surface) | |
| 418 temp_DBS |= DBG_C_SURF; | |
| 167 | 419 |
| 420 if( !DBS_HE_sat && !He_ratio) | |
| 421 for(i = 16; i < 32; i++) | |
| 422 if(pres_tissue[i]) | |
| 116 | 423 temp_DBS |= DBG_HEwoHE; |
| 167 | 424 |
| 116 | 425 if(DBG_deco_ppO2 != deco_ppO2) |
| 426 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 427 |
| 225 | 428 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 429 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 430 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 431 temp_DBS |= DBG_C_DGAS; |
| 167 | 432 |
| 116 | 433 if(DBG_float_deco_distance != float_deco_distance) |
| 434 temp_DBS |= DBG_C_DIST; | |
| 435 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 436 temp_DBS |= DBG_C_LAST; | |
| 167 | 437 if( DBG_GF_low != GF_low |
| 438 || DBG_GF_high != GF_high ) | |
| 116 | 439 temp_DBS |= DBG_C_GF; |
| 440 if(pres_respiration > 13.0) | |
| 441 temp_DBS |= DBG_PHIGH; | |
| 442 if(pres_surface - pres_respiration > 0.2) | |
| 443 temp_DBS |= DBG_PLOW; | |
| 444 if(is_post_check) | |
| 445 int_O_DBG_post_bitfield |= temp_DBS; | |
| 446 else | |
| 447 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 448 } | |
| 449 | |
| 167 | 450 ////////////////////////////////////////////////////////////////////////////// |
| 451 // DBG - prior to calc. of dive | |
| 452 // | |
| 453 static void check_pre_dbg(void) | |
| 116 | 454 { |
| 455 check_dbg(0); | |
| 456 } | |
| 457 | |
| 167 | 458 ////////////////////////////////////////////////////////////////////////////// |
| 459 // DBG - after decocalc of dive | |
| 460 // | |
| 461 static void check_post_dbg(void) | |
| 116 | 462 { |
| 463 check_dbg(1); | |
| 464 } | |
| 465 | |
| 165 | 466 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 467 ////////////////////////////////////////////////////////////////////////////// |
| 468 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 469 ////////////////////////////////////////////////////////////////////////////// | |
| 470 ////////////////////////////////////////////////////////////////////////////// | |
| 471 | |
| 235 | 472 ////////////////////////////////////////////////////////////////////////////// |
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473 // Bump to blue-screen when an assert is wrong |
| 235 | 474 #ifdef __DEBUG |
| 475 void assert_failed(PARAMETER short int line) | |
| 476 { | |
| 477 extern void PLED_resetdebugger(void); | |
| 478 extern unsigned short temp10; | |
| 479 | |
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480 temp10 = line; // Show source line number as stack depth. |
| 235 | 481 PLED_resetdebugger(); |
| 482 } | |
| 483 #endif | |
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484 |
| 235 | 485 ////////////////////////////////////////////////////////////////////////////// |
| 486 // When calling C code from ASM context, the data stack pointer and | |
| 487 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
| 488 | |
| 489 #ifdef CROSS_COMPILE | |
| 490 # define RESET_C_STACK | |
| 491 #else | |
| 492 # ifdef __DEBUG | |
| 493 # define RESET_C_STACK fillDataStack(); | |
| 494 void fillDataStack(void) | |
| 495 { | |
| 496 _asm | |
| 497 LFSR 1,C_STACK | |
| 498 MOVLW 0xCC | |
| 499 loop: MOVWF POSTINC1,0 | |
| 500 TSTFSZ FSR1L,0 | |
| 501 BRA loop | |
| 502 | |
| 503 LFSR 1,C_STACK | |
| 504 LFSR 2,C_STACK | |
| 505 _endasm | |
| 506 } | |
| 507 # else | |
| 508 # define RESET_C_STACK \ | |
| 509 _asm \ | |
| 510 LFSR 1, C_STACK \ | |
| 511 LFSR 2, C_STACK \ | |
| 512 _endasm | |
| 513 # endif | |
| 514 #endif | |
| 515 | |
| 516 ////////////////////////////////////////////////////////////////////////////// | |
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517 // Read CF values from the C code. |
| 235 | 518 |
| 203 | 519 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 520 { |
| 184 | 521 #ifdef CROSS_COMPILE |
| 522 extern unsigned short custom_functions[]; | |
| 523 return custom_functions[cf]; | |
| 524 #else | |
| 167 | 525 extern unsigned char hi, lo; |
| 526 extern void getcustom15(); | |
| 527 _asm | |
| 528 movff cf,WREG | |
| 529 call getcustom15,0 | |
| 530 movff lo,PRODL | |
| 531 movff hi,PRODH | |
| 532 _endasm | |
| 184 | 533 #endif |
| 167 | 534 } |
| 535 | |
| 536 ////////////////////////////////////////////////////////////////////////////// | |
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537 // Fast subroutine to read RTC timer 3. |
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538 // Note: result is in 1/32 of msecs. |
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539 static unsigned short tmr3(void) |
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540 { |
| 261 | 541 #ifndef CROSS_COMPILE |
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542 _asm |
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543 movff 0xfb2,PRODL // TMR3L |
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544 movff 0xfb3,PRODH // TMR3H |
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545 _endasm // result in PRODH:PRODL. |
| 261 | 546 #else |
| 547 return 0; | |
| 548 #endif | |
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549 } |
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550 |
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551 ////////////////////////////////////////////////////////////////////////////// |
| 258 | 552 // read buhlmann tables A and B for compatriment ci |
| 553 // | |
| 554 static void read_buhlmann_coefficients(void) | |
| 165 | 555 { |
| 184 | 556 #ifndef CROSS_COMPILE |
| 167 | 557 // Note: we don't use far rom pointer, because the |
| 558 // 24 bits is to complex, hence we have to set | |
| 559 // the UPPER page ourself... | |
| 560 // --> Set zero if tables are moved to lower pages ! | |
| 561 _asm | |
| 562 movlw 1 | |
| 563 movwf TBLPTRU,0 | |
| 564 _endasm | |
| 184 | 565 #endif |
| 258 | 566 |
| 197 | 567 assert( 0 <= ci && ci < 16 ); |
| 165 | 568 var_N2_a = buhlmann_a[ci]; |
| 569 var_N2_b = buhlmann_b[ci]; | |
| 167 | 570 var_He_a = (buhlmann_a+16)[ci]; |
| 571 var_He_b = (buhlmann_b+16)[ci]; | |
| 572 | |
| 165 | 573 // Check reading consistency: |
| 574 if( (var_N2_a < 0.231) | |
| 575 || (var_N2_a > 1.27) | |
| 576 || (var_N2_b < 0.504) | |
| 577 || (var_N2_b > 0.966) | |
| 578 || (var_He_a < 0.510) | |
| 579 || (var_He_a > 1.75) | |
| 580 || (var_He_b < 0.423) | |
| 581 || (var_He_b > 0.927) | |
| 582 ) | |
| 258 | 583 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; |
| 584 } | |
| 585 | |
| 586 ////////////////////////////////////////////////////////////////////////////// | |
| 587 // read buhlmann tables for compatriment ci | |
| 588 // If period == 0 : 2sec interval | |
| 589 // 1 : 1 min interval | |
| 590 // 2 : 10 min interval. | |
| 591 static void read_buhlmann_times(PARAMETER char period) | |
| 592 { | |
| 593 #ifndef CROSS_COMPILE | |
| 594 // Note: we don't use far rom pointer, because the | |
| 595 // 24 bits is to complex, hence we have to set | |
| 596 // the UPPER page ourself... | |
| 597 // --> Set zero if tables are moved to lower pages ! | |
| 598 _asm | |
| 599 movlw 1 | |
| 600 movwf TBLPTRU,0 | |
| 601 _endasm | |
| 602 #endif | |
| 603 assert( 0 <= ci && ci < 16 ); | |
| 604 | |
| 165 | 605 // Integration intervals. |
| 167 | 606 switch(period) |
| 165 | 607 { |
| 608 case 0: //---- 2 sec ----------------------------------------------------- | |
| 609 var_N2_e = e2secs[ci]; | |
| 167 | 610 var_He_e = (e2secs+16)[ci]; |
| 165 | 611 |
| 612 // Check reading consistency: | |
| 613 if( (var_N2_e < 0.0000363) | |
| 614 || (var_N2_e > 0.00577) | |
| 615 || (var_He_e < 0.0000961) | |
| 616 || (var_He_e > 0.150) | |
| 617 ) | |
| 618 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 619 | |
| 620 break; | |
| 621 | |
| 622 case 1: //---- 1 min ----------------------------------------------------- | |
| 623 var_N2_e = e1min[ci]; | |
| 167 | 624 var_He_e = (e1min+16)[ci]; |
| 165 | 625 |
| 626 // Check reading consistency: | |
| 627 if( (var_N2_e < 1.09E-3) | |
| 628 || (var_N2_e > 0.1592) | |
| 629 || (var_He_e < 0.00288) | |
| 630 || (var_He_e > 0.3682) | |
| 631 ) | |
| 632 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 633 | |
| 634 break; | |
| 635 | |
| 636 case 2: //---- 10 min ---------------------------------------------------- | |
| 637 var_N2_e = e10min[ci]; | |
| 167 | 638 var_He_e = (e10min+16)[ci]; |
| 165 | 639 |
| 640 // Check reading consistency: | |
| 641 if( (var_N2_e < 0.01085) | |
| 642 || (var_N2_e > 0.82323) | |
| 643 || (var_He_e < 0.02846) | |
| 644 || (var_He_e > 0.98986) | |
| 645 ) | |
| 646 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 647 | |
| 648 break; | |
| 197 | 649 |
| 650 default: | |
| 651 assert(0); // Never go there... | |
| 165 | 652 } |
| 653 } | |
| 654 | |
| 655 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 656 // calc_next_decodepth_GF |
| 165 | 657 // |
| 116 | 658 // new in v.102 |
| 165 | 659 // |
| 116 | 660 // INPUT, changing during dive: |
| 192 | 661 // low_depth |
| 167 | 662 // |
| 116 | 663 // INPUT, fixed during dive: |
| 167 | 664 // pres_surface |
| 665 // GF_delta | |
| 666 // GF_high | |
| 667 // GF_low | |
| 171 | 668 // char_I_depth_last_deco |
| 167 | 669 // float_deco_distance |
| 670 // | |
| 241 | 671 // RETURN TRUE iff a stop is needed. |
| 672 // | |
| 116 | 673 // OUTPUT |
| 171 | 674 // locked_GF_step |
| 167 | 675 // temp_depth_limt |
| 192 | 676 // low_depth |
| 167 | 677 // |
| 241 | 678 static unsigned char calc_nextdecodepth(void) |
| 167 | 679 { |
| 241 | 680 //--- Max ascent speed --------------------------------------------------- |
| 681 // Recompute leading gas limit, at current depth: | |
| 682 overlay float depth = (temp_deco - pres_surface) / 0.09985; | |
| 683 | |
| 684 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
| 685 overlay float min_depth = depth - 10.0; | |
| 686 | |
| 687 // Do we need to stop at current depth ? | |
| 688 overlay unsigned char need_stop = 0; | |
| 689 | |
| 690 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
| 691 | |
| 212 | 692 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 693 if (char_I_deco_model == 1) |
| 694 { | |
| 241 | 695 if( depth >= low_depth ) |
| 192 | 696 sim_limit( GF_low ); |
| 697 else | |
| 698 sim_limit( GF_high - depth * locked_GF_step ); | |
| 699 | |
| 700 // Stops are needed ? | |
| 701 if( sim_lead_tissue_limit > pres_surface ) | |
| 702 { | |
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703 // Compute tolerated depth, for the leading tissue [metre]: |
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704 overlay float depth_tol = (sim_lead_tissue_limit - pres_surface) / 0.09985; |
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705 |
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706 // Deepest stop, in multiples of 3 metres. |
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707 overlay unsigned char first_stop = 3 * (short)(0.99999 + depth_tol * 0.33333 ); |
| 192 | 708 assert( first_stop < 128 ); |
| 171 | 709 |
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710 // Is it a new deepest needed stop ? If yes this is the reference for |
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711 // the varying gradient factor. So reset that: |
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712 if( depth_tol > min_depth && depth_tol > low_depth ) |
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713 { |
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714 // Store the deepest stop depth, as reference for GF_low. |
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715 low_depth = depth_tol; |
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716 locked_GF_step = GF_delta / low_depth; |
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717 } |
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718 |
| 264 | 719 #if defined(__DEBUG) || defined(CROSS_COMPILE) |
| 261 | 720 { |
| 721 // Extra testing code to make sure the first_stop formula | |
| 722 // and rounding provides correct depth: | |
| 723 overlay float pres_stop = first_stop * 0.09985 // Meters to bar | |
| 724 + pres_surface; | |
| 725 | |
| 726 // Keep GF_low until a first stop depth is found: | |
| 727 if( first_stop >= low_depth ) | |
| 728 sim_limit( GF_low ); | |
| 729 else | |
| 730 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 731 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 732 sim_limit( GF_high - first_stop * locked_GF_step ); | |
| 733 | |
| 734 // upper limit (lowest pressure tolerated): | |
| 735 assert( sim_lead_tissue_limit < pres_stop ); | |
| 736 } | |
| 737 #endif | |
| 738 | |
| 212 | 739 // Apply correction for the shallowest stop. |
| 192 | 740 if( first_stop == 3 ) // new in v104 |
| 741 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 742 |
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743 // Because gradient factor at first_stop might be bigger than at |
| 261 | 744 // current depth, we might ascent a bit more. |
| 745 // Hence, check all stops until one is indeed higher than tolerated presure: | |
| 746 while(first_stop > 0) | |
| 192 | 747 { |
| 748 overlay unsigned char next_stop; // Next index (0..30) | |
| 749 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 750 |
| 241 | 751 // Check max speed, or reaching surface. |
| 752 if( first_stop <= min_depth ) | |
| 753 break; | |
| 754 | |
| 755 // So, there is indeed a stop needed: | |
| 756 need_stop = 1; | |
| 757 | |
| 192 | 758 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 759 next_stop = 0; | |
| 216 | 760 else if( first_stop == 6 ) |
| 761 next_stop = char_I_depth_last_deco; | |
| 192 | 762 else |
| 763 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 764 |
| 241 | 765 pres_stop = next_stop * 0.09985 // Meters to bar |
| 192 | 766 + pres_surface; |
| 767 | |
| 212 | 768 // Keep GF_low until a first stop depth is found: |
| 769 if( next_stop >= low_depth ) | |
| 770 sim_limit( GF_low ); | |
| 771 else | |
| 772 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 773 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 774 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 775 |
| 192 | 776 // upper limit (lowest pressure tolerated): |
| 777 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 778 break; | |
| 779 | |
| 780 // Else, validate that stop and loop... | |
| 781 first_stop = next_stop; | |
| 212 | 782 } |
| 783 | |
| 784 // next stop is the last validated depth found, aka first_stop | |
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785 temp_depth_limit = first_stop; // Stop depth, in metre. |
| 192 | 786 } |
| 171 | 787 else |
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788 temp_depth_limit = 0; // stop depth, in metre. |
| 116 | 789 } |
| 167 | 790 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 791 { |
| 192 | 792 overlay float pres_gradient; |
| 793 | |
| 794 // Original model | |
| 116 | 795 // optimized in v.101 |
| 171 | 796 // char_I_depth_last_deco included in v.101 |
| 116 | 797 |
| 192 | 798 // Compute sim_lead_tissue_limit too, but just once. |
| 799 sim_limit(1.0); | |
| 800 | |
| 801 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 802 if (pres_gradient >= 0) |
| 116 | 803 { |
| 241 | 804 pres_gradient /= 0.29955; // Bar --> stop number; |
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805 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
| 241 | 806 need_stop = 1; // Hit. |
| 807 | |
| 808 // Implement last stop at 4m/5m/6m... | |
| 809 if( temp_depth_limit == 3 ) | |
| 810 temp_depth_limit = char_I_depth_last_deco; | |
| 171 | 811 } |
| 116 | 812 else |
| 241 | 813 temp_depth_limit = 0; |
| 171 | 814 } |
| 212 | 815 |
| 217 | 816 //---- Check gas change -------------------------------------------------- |
| 241 | 817 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
| 818 | |
| 819 return need_stop; | |
| 167 | 820 } |
| 116 | 821 |
| 167 | 822 ////////////////////////////////////////////////////////////////////////////// |
|
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823 // copy_deco_table |
| 167 | 824 // |
|
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825 // Buffer the stops, once computed, so we can continue to display them |
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826 // while computing the next set. |
| 167 | 827 // |
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828 static void copy_deco_table(void) |
| 116 | 829 { |
|
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830 // Copy depth of the first (deepest) stop, because when reversing |
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831 // order, it will be hard to find... |
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832 char_O_first_deco_depth = internal_deco_depth[0]; |
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833 char_O_first_deco_time = internal_deco_time [0]; |
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834 |
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835 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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836 { |
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837 overlay unsigned char x, y; |
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838 |
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839 //---- First: search the first non-null depth |
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840 for(x=31; x != 0; --x) |
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841 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 842 |
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843 //---- Second: copy to output table (in reverse order) |
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844 for(y=0; y<32; y++, --x) |
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845 { |
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846 char_O_deco_depth[y] = internal_deco_depth[x]; |
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847 char_O_deco_time [y] = internal_deco_time [x]; |
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848 |
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849 // Stop only once the last transfer is done. |
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850 if( x == 0 ) break; |
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851 } |
| 116 | 852 |
|
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853 //---- Third: fill table end with null |
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854 for(y++; y<32; y++) |
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855 { |
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856 char_O_deco_time [y] = 0; |
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857 char_O_deco_depth[y] = 0; |
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858 } |
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859 } |
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860 else //---- Straight copy ------------------------------------------------ |
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861 { |
| 167 | 862 overlay unsigned char x; |
| 863 | |
|
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864 for(x=0; x<32; x++) |
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865 { |
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866 char_O_deco_depth[x] = internal_deco_depth[x]; |
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867 char_O_deco_time [x] = internal_deco_time [x]; |
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868 } |
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869 } |
| 167 | 870 } |
| 116 | 871 |
| 167 | 872 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 873 // temp_tissue_safety // |
| 167 | 874 // |
| 116 | 875 // outsourced in v.102 |
| 167 | 876 // |
| 877 // Apply safety factors for brand ZH-L16 model. | |
| 878 // | |
| 879 static void temp_tissue_safety(void) | |
| 116 | 880 { |
| 197 | 881 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 882 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 883 | |
| 167 | 884 if( char_I_deco_model == 0 ) |
| 116 | 885 { |
| 886 if (temp_tissue < 0.0) | |
| 126 | 887 temp_tissue *= float_desaturation_multiplier; |
| 116 | 888 else |
| 126 | 889 temp_tissue *= float_saturation_multiplier; |
| 116 | 890 } |
| 167 | 891 } |
| 116 | 892 |
| 167 | 893 ////////////////////////////////////////////////////////////////////////////// |
| 894 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 895 // ** THE JUMP-IN CODE ** |
| 896 // ** for the asm code ** | |
| 167 | 897 ////////////////////////////////////////////////////////////////////////////// |
| 898 ////////////////////////////////////////////////////////////////////////////// | |
|
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899 |
| 167 | 900 ////////////////////////////////////////////////////////////////////////////// |
|
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901 // Called every 2 seconds during diving. |
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902 // update tissues every time. |
| 184 | 903 // |
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904 // Every 6 seconds (or slower when TTS > 16): |
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905 // - update deco table (char_O_deco_time/depth) with new values. |
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906 // - update ascent time, |
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907 // - set status to zero (so we can check there is new results). |
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908 // |
| 116 | 909 void deco_calc_hauptroutine(void) |
| 910 { | |
|
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911 RESET_C_STACK |
| 116 | 912 calc_hauptroutine(); |
| 913 int_O_desaturation_time = 65535; | |
| 914 } | |
| 915 | |
| 167 | 916 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 917 // Reset decompression model: |
| 918 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 919 // + Reset last stop to 0m | |
| 920 // + Reset all model output. | |
| 116 | 921 void deco_clear_tissue(void) |
| 922 { | |
|
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923 RESET_C_STACK |
| 116 | 924 clear_tissue(); |
| 925 } | |
| 926 | |
| 167 | 927 ////////////////////////////////////////////////////////////////////////////// |
| 928 | |
| 116 | 929 void deco_calc_wo_deco_step_1_min(void) |
| 930 { | |
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931 RESET_C_STACK |
| 116 | 932 calc_wo_deco_step_1_min(); |
| 933 deco_calc_desaturation_time(); | |
| 934 } | |
| 935 | |
| 167 | 936 ////////////////////////////////////////////////////////////////////////////// |
| 937 | |
| 116 | 938 void deco_debug(void) |
| 939 { | |
|
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940 RESET_C_STACK |
| 116 | 941 } |
| 942 | |
| 241 | 943 |
| 944 ////////////////////////////////////////////////////////////////////////////// | |
| 945 // Find current gas in the list (if any). | |
| 946 // | |
| 947 // Input: char_I_deco_N2_ratio[] and He, to detect breathed gas. | |
| 948 // | |
| 949 // Output: sim_gas_depth_used | |
| 950 // | |
| 951 static void gas_switch_find_current(void) | |
| 952 { | |
|
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953 overlay unsigned char j; |
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954 overlay unsigned char N2 = (unsigned char)(N2_ratio * 100 + 0.5); |
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955 overlay unsigned char He = (unsigned char)(He_ratio * 100 + 0.5); |
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956 |
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957 for(j=0; j<5; ++j) |
| 241 | 958 { |
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959 // Make sure to detect if we are already breathing some gas in |
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960 // the current list (happends when first gas do have a depth). |
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961 if( N2 == char_I_deco_N2_ratio[j] |
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962 && He == char_I_deco_He_ratio[j] |
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963 ) |
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964 { |
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965 temp_depth_limit = sim_gas_last_depth = char_I_deco_gas_change[j]; |
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966 sim_gas_last_used = j+1; |
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967 break; |
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968 } |
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969 } |
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970 |
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971 // If there is no gas-switch-delay running ? |
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972 if( sim_gas_delay <= sim_dive_mins) |
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973 { |
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974 // Compute current depth: |
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975 overlay unsigned char depth = (unsigned char)((pres_respiration - pres_surface) / 0.09985); |
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976 assert( depth < 130 ); |
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977 |
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978 // And if I'm above the last decostop (with the 3m margin) ? |
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979 if( (sim_gas_last_depth-3) > depth ) |
| 241 | 980 { |
|
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981 for(j=0; j<5; ++j) |
| 241 | 982 { |
|
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983 // And If I am in the range of a valide stop ? |
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984 // (again, with the same 3m margin) |
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985 if( char_I_deco_gas_change[j] |
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986 && depth <= char_I_deco_gas_change[j] |
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987 && depth >= (char_I_deco_gas_change[j] - 3) |
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988 ) |
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989 { |
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990 // Then start gas-switch timer there, |
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991 sim_gas_delay = sim_dive_mins |
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992 + read_custom_function(55); |
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993 |
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994 // And make sure decostop will be recorded at the right depth. |
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995 temp_depth_limit = char_I_deco_gas_change[j]; |
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996 break; |
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997 } |
| 241 | 998 } |
| 999 } | |
|
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1000 else |
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1001 // Make clear there is no deay anymore. |
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1002 sim_gas_delay = 0; |
| 241 | 1003 } |
| 1004 } | |
| 1005 | |
| 167 | 1006 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 1007 // Find deepest available gas. |
| 201 | 1008 // |
| 241 | 1009 // Input: temp_depth_limit, |
| 1010 // deco_gas_change[] | |
| 1011 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
| 212 | 1012 // |
| 241 | 1013 // RETURNS TRUE if a stop is needed for gas switch. |
| 1014 // | |
| 1015 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
| 212 | 1016 // |
| 241 | 1017 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
| 1018 // are null), or during the ascent to make sure we are not passing a | |
| 1019 // stop (in which case both can be already set). | |
| 1020 // | |
| 1021 static unsigned char gas_switch_deepest(void) | |
| 201 | 1022 { |
| 241 | 1023 overlay unsigned char switch_deco = 0, switch_last = 0; |
| 201 | 1024 |
| 1025 if (char_I_const_ppO2 == 0) | |
| 1026 { | |
| 225 | 1027 overlay unsigned char j; |
| 1028 | |
| 241 | 1029 // Loop over all enabled gas, to find the deepest one, |
| 1030 // above las gas, but below temp_depth_limit. | |
| 1031 for(j=0; j<5; ++j) | |
| 225 | 1032 { |
| 241 | 1033 // Gas not (yet) allowed ? Skip ! |
| 1034 if( temp_depth_limit > deco_gas_change[j] ) | |
| 1035 continue; | |
| 1036 | |
| 1037 // Gas deeper than the current/previous one ? Skip ! | |
| 1038 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) | |
| 1039 continue; | |
| 1040 | |
| 1041 // First, or deeper ? | |
|
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1042 if( switch_deco < deco_gas_change[j] ) |
| 241 | 1043 { |
| 1044 switch_deco = deco_gas_change[j]; | |
| 1045 switch_last = j+1; | |
| 1046 } | |
| 225 | 1047 } |
| 201 | 1048 } |
| 1049 | |
| 203 | 1050 // If there is a better gas available |
| 241 | 1051 if( switch_deco ) |
| 201 | 1052 { |
| 241 | 1053 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
| 201 | 1054 |
| 241 | 1055 // Should restart gas-switch delay only when gas do changes... |
| 1056 assert( sim_gas_delay <= sim_dive_mins ); | |
| 217 | 1057 |
| 241 | 1058 sim_gas_last_depth = switch_deco; |
| 1059 sim_gas_last_used = switch_last; | |
| 1060 sim_gas_delay = read_custom_function(55); | |
| 217 | 1061 |
| 241 | 1062 // Apply depth correction ONLY if CF#55 is not null: |
| 1063 if( sim_gas_delay > 0 ) | |
| 225 | 1064 { |
| 241 | 1065 sim_gas_delay += sim_dive_mins; |
| 1066 temp_depth_limit = switch_deco; | |
| 1067 return 1; | |
| 225 | 1068 } |
| 241 | 1069 |
| 1070 return 0; | |
| 217 | 1071 } |
| 1072 | |
| 241 | 1073 sim_gas_delay = 0; |
| 1074 return 0; | |
| 217 | 1075 } |
| 1076 | |
| 1077 ////////////////////////////////////////////////////////////////////////////// | |
| 1078 // Calculate gas switches | |
| 1079 // | |
| 1080 // | |
| 1081 // Input: N2_ratio, He_ratio. | |
| 1082 // sim_gas_last_used | |
| 1083 // | |
| 1084 // Output: calc_N2_ratio, calc_He_ratio | |
| 1085 // | |
| 241 | 1086 static void gas_switch_set(void) |
| 217 | 1087 { |
| 224 | 1088 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
| 217 | 1089 |
| 224 | 1090 if( sim_gas_last_used == 0 ) |
| 1091 { | |
| 1092 calc_N2_ratio = N2_ratio; | |
| 1093 calc_He_ratio = He_ratio; | |
| 1094 } | |
| 1095 else | |
| 1096 { | |
| 1097 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 1098 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 1099 } |
| 201 | 1100 |
| 1101 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 1102 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1103 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1104 } | |
| 1105 | |
| 1106 ////////////////////////////////////////////////////////////////////////////// | |
| 1107 // | |
| 212 | 1108 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 1109 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 276 | 1110 // float_deco_distance : security factor. |
| 212 | 1111 // Water-vapor pressure inside lumbs (ppWVapour). |
| 1112 // | |
| 236 | 1113 // Output: ppN2, ppHe. |
| 212 | 1114 // |
| 1115 static void sim_alveolar_presures(void) | |
| 201 | 1116 { |
| 212 | 1117 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1118 | |
| 276 | 1119 // Take deco offset into account, but not at surface. |
| 1120 // Note: this should be done on ambiant pressure, hence before | |
| 1121 // computing the diluant partial pressure... | |
| 1122 if( deco_diluent > pres_surface ) | |
| 1123 deco_diluent += float_deco_distance; | |
| 1124 | |
| 212 | 1125 //---- CCR mode : deco gas switch ? -------------------------------------- |
| 276 | 1126 if( char_I_const_ppO2 != 0 ) |
| 201 | 1127 { |
| 276 | 1128 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
| 1129 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
| 1130 // ppWVapour in the equations below: | |
| 212 | 1131 if( temp_deco > deco_ppO2_change ) |
| 276 | 1132 deco_diluent -= const_ppO2; |
| 201 | 1133 else |
| 276 | 1134 deco_diluent -= deco_ppO2; |
| 1135 deco_diluent /= calc_N2_ratio + calc_He_ratio; | |
| 212 | 1136 |
| 1137 if (deco_diluent > temp_deco) | |
| 1138 deco_diluent = temp_deco; | |
| 201 | 1139 } |
| 1140 | |
| 212 | 1141 if( deco_diluent > ppWVapour ) |
| 201 | 1142 { |
| 236 | 1143 ppN2 = calc_N2_ratio * (deco_diluent - ppWVapour); |
| 201 | 1144 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); |
| 1145 } | |
| 1146 else | |
| 1147 { | |
| 236 | 1148 ppN2 = 0.0; |
| 201 | 1149 ppHe = 0.0; |
| 1150 } | |
| 236 | 1151 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 1152 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 1153 } | |
| 1154 | |
| 1155 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1156 // clear_tissue |
| 1157 // | |
| 165 | 1158 // optimized in v.101 (var_N2_a) |
| 167 | 1159 // |
| 1160 // preload tissues with standard pressure for the given ambient pressure. | |
| 1161 // Note: fixed N2_ratio for standard air. | |
| 201 | 1162 // |
| 167 | 1163 static void clear_tissue(void) |
| 116 | 1164 { |
| 1165 flag_in_divemode = 0; | |
| 1166 int_O_DBS_bitfield = 0; | |
| 1167 int_O_DBS2_bitfield = 0; | |
| 1168 int_O_DBG_pre_bitfield = 0; | |
| 1169 int_O_DBG_post_bitfield = 0; | |
| 1170 char_O_NDL_at_20mtr = 255; | |
| 1171 | |
| 167 | 1172 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1173 N2_ratio = 0.7902; | |
| 212 | 1174 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1175 |
| 167 | 1176 for(ci=0; ci<16; ci++) |
| 126 | 1177 { |
| 197 | 1178 // cycle through the 16 Bühlmann tissues |
| 200 | 1179 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
| 164 | 1180 pres_tissue[ci] = p; |
| 197 | 1181 |
| 1182 // cycle through the 16 Bühlmann tissues for Helium | |
| 167 | 1183 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1184 } // for 0 to 16 |
| 116 | 1185 |
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1186 clear_deco_table(); |
| 126 | 1187 char_O_deco_status = 0; |
| 1188 char_O_nullzeit = 0; | |
| 168 | 1189 int_O_ascenttime = 0; |
| 126 | 1190 char_O_gradient_factor = 0; |
| 1191 char_O_relative_gradient_GF = 0; | |
| 197 | 1192 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 258 | 1193 |
| 1194 calc_lead_tissue_limit = 0.0; | |
| 1195 char_O_gtissue_no = 0; | |
| 167 | 1196 } |
| 116 | 1197 |
| 167 | 1198 ////////////////////////////////////////////////////////////////////////////// |
| 1199 // calc_hauptroutine | |
| 1200 // | |
| 1201 // this is the major code in dive mode calculates: | |
| 116 | 1202 // the tissues, |
| 167 | 1203 // the bottom time, |
| 1204 // and simulates the ascend with all deco stops. | |
| 171 | 1205 // |
| 1206 // The deco_state sequence is : | |
| 1207 // 3 (at surface) | |
| 1208 // +---> 0 : calc nullzeit | |
| 1209 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1210 // | +-> 1 : simulate up to 16min of stops. | |
| 1211 // | +------< not finished | |
| 1212 // +--------< finish | |
| 1213 // | |
| 167 | 1214 static void calc_hauptroutine(void) |
| 116 | 1215 { |
| 241 | 1216 static unsigned char backup_gas_used = 0; |
| 1217 static unsigned char backup_gas_depth = 0; | |
| 217 | 1218 static unsigned char backup_gas_delay = 0; |
| 186 | 1219 |
| 116 | 1220 calc_hauptroutine_data_input(); |
| 1221 | |
| 1222 if(!flag_in_divemode) | |
| 1223 { | |
| 1224 flag_in_divemode = 1; | |
| 1225 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1226 } | |
| 1227 else | |
| 1228 check_pre_dbg(); | |
| 1229 | |
| 1230 calc_hauptroutine_update_tissues(); | |
| 1231 calc_gradient_factor(); | |
| 1232 | |
| 167 | 1233 // toggle between calculation for nullzeit (bottom time), |
| 1234 // deco stops | |
| 1235 // and more deco stops (continue) | |
| 1236 switch( char_O_deco_status ) | |
| 116 | 1237 { |
| 186 | 1238 case 3: //---- At surface: start a new dive ------------------------------ |
| 1239 clear_deco_table(); | |
| 1240 copy_deco_table(); | |
| 200 | 1241 int_O_ascenttime = 0; // Reset DTR. |
| 1242 char_O_nullzeit = 0; // Reset bottom time. | |
| 1243 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 201 | 1244 |
| 217 | 1245 // Values that should be reset just once for the full real dive. |
| 1246 // This is used to record the lowest stop for the whole dive, | |
| 1247 // Including ACCROSS all simulated ascent. | |
| 1248 low_depth = 0; | |
| 1249 | |
| 1250 // Reset gas switch history. | |
| 241 | 1251 backup_gas_used = sim_gas_last_used = 0; |
| 1252 backup_gas_depth = sim_gas_last_depth = 0; | |
| 217 | 1253 backup_gas_delay = sim_gas_delay = 0; |
| 203 | 1254 sim_dive_mins = 0; |
| 1255 break; | |
| 186 | 1256 |
| 167 | 1257 case 0: //---- bottom time ----------------------------------------------- |
| 1258 calc_nullzeit(); | |
| 1259 check_ndl(); | |
| 186 | 1260 char_O_deco_status = 2; // calc ascent next time. |
| 1261 break; | |
| 1262 | |
| 1263 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 203 | 1264 // Check proposed gas at begin of ascent simulation |
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1265 sim_dive_mins = int_I_divemins; // Init current time. |
| 241 | 1266 |
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1267 gas_switch_find_current(); // Lookup for current gas & time. |
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1268 gas_switch_set(); // setup calc_ratio's |
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1269 |
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1270 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1271 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
| 203 | 1272 backup_gas_delay = sim_gas_delay; |
| 186 | 1273 |
| 1274 sim_ascent_to_first_stop(); | |
| 201 | 1275 |
| 1276 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
| 167 | 1277 break; |
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1278 |
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1279 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1280 calc_hauptroutine_calc_deco(); |
| 186 | 1281 |
| 1282 // If simulation is finished, restore the GF low reference, so that | |
| 1283 // next ascent simulation is done from the current depth: | |
| 217 | 1284 if( char_O_deco_status == 0 ) |
| 186 | 1285 { |
| 241 | 1286 sim_gas_last_used = backup_gas_used; |
| 1287 sim_gas_last_depth = backup_gas_depth; | |
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1288 sim_gas_delay = backup_gas_delay; |
| 186 | 1289 } |
| 167 | 1290 break; |
| 116 | 1291 } |
| 167 | 1292 |
| 116 | 1293 check_post_dbg(); |
| 1294 } | |
| 1295 | |
| 167 | 1296 ////////////////////////////////////////////////////////////////////////////// |
| 1297 // calc_hauptroutine_data_input | |
| 1298 // | |
| 1299 // Reset all C-code dive parameters from their ASM-code values. | |
| 1300 // Detect gas change condition. | |
| 1301 // | |
| 116 | 1302 void calc_hauptroutine_data_input(void) |
| 1303 { | |
| 203 | 1304 overlay short int_temp; |
| 126 | 1305 |
| 197 | 1306 pres_respiration = int_I_pres_respiration * 0.001; |
| 1307 pres_surface = int_I_pres_surface * 0.001; | |
| 1308 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1309 He_ratio = char_I_He_ratio * 0.01; | |
| 1310 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1311 |
| 126 | 1312 // ____________________________________________________ |
| 1313 // | |
| 1314 // _____________ G A S _ C H A N G E S ________________ | |
| 1315 // ____________________________________________________ | |
| 1316 | |
| 212 | 1317 // Keep a margin of 150mbar = 1.50m |
| 1318 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1319 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1320 |
| 225 | 1321 deco_gas_change[0] = 0; |
| 1322 deco_gas_change[1] = 0; | |
| 1323 deco_gas_change[2] = 0; | |
| 1324 deco_gas_change[3] = 0; | |
| 1325 deco_gas_change[4] = 0; | |
| 116 | 1326 |
| 203 | 1327 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1328 if(char_I_deco_gas_change[0]) |
| 126 | 1329 { |
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1330 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1331 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1332 } |
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1333 if(char_I_deco_gas_change[1]) |
| 126 | 1334 { |
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1335 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1336 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1337 } |
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1338 if(char_I_deco_gas_change[2]) |
| 126 | 1339 { |
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1340 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1341 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1342 } |
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1343 if(char_I_deco_gas_change[3]) |
| 126 | 1344 { |
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1345 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1346 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1347 } |
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1348 if(char_I_deco_gas_change[4]) |
| 126 | 1349 { |
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1350 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1351 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1352 } |
| 116 | 1353 |
| 197 | 1354 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1355 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
| 1356 + pres_surface | |
| 1357 + float_deco_distance; | |
| 1358 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1359 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1360 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1361 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1362 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1363 GF_delta = GF_high - GF_low; |
| 116 | 1364 } |
| 1365 | |
| 167 | 1366 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1367 // |
| 1368 // | |
| 116 | 1369 void calc_hauptroutine_update_tissues(void) |
| 1370 { | |
| 197 | 1371 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1372 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1373 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1374 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1375 |
| 276 | 1376 pres_diluent = pres_respiration; |
| 1377 if (char_I_const_ppO2 != 0) // new in v.101 | |
| 186 | 1378 { |
| 276 | 1379 pres_diluent -= const_ppO2; // new in v.101 |
| 1380 pres_diluent /= N2_ratio + He_ratio; // new in v.101 | |
| 1381 if( pres_diluent > pres_respiration ) // new in v.101 | |
| 1382 pres_diluent = pres_respiration; // new in v.101 | |
| 186 | 1383 } |
| 276 | 1384 if (pres_diluent > ppWVapour) // new in v.101 |
| 116 | 1385 { |
| 276 | 1386 ppN2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 200 | 1387 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 116 | 1388 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1389 } | |
| 167 | 1390 else // new in v.101 |
| 116 | 1391 { |
| 236 | 1392 ppN2 = 0.0; // new in v.101 |
| 200 | 1393 ppHe = 0.0; // new in v.101 |
| 116 | 1394 char_O_diluent = 0; |
| 1395 } | |
| 1396 | |
| 1397 if(!char_I_step_is_1min) | |
| 192 | 1398 calc_tissue(0); |
| 116 | 1399 else |
| 192 | 1400 calc_tissue(1); |
| 186 | 1401 |
| 192 | 1402 // Calc limit for surface, ie. GF_high. |
| 258 | 1403 calc_limit(); |
| 186 | 1404 |
| 203 | 1405 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 1406 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 192 | 1407 |
| 1408 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1409 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1410 { |
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1411 char_O_nullzeit = 0; // deco necessary |
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1412 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1413 } |
| 171 | 1414 } |
| 1415 | |
| 116 | 1416 |
| 167 | 1417 ////////////////////////////////////////////////////////////////////////////// |
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1418 // Compute stops. |
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1419 // |
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1420 // Note: because this can be very long, break on 16 iterations, and set state |
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1421 // to 0 when finished, or to 1 when needing to continue. |
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1422 // Note: because this might be very long (~ 66 ms by iteration in 1.84beta), |
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1423 // break the loop when total time > 512msec. |
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1424 // |
| 116 | 1425 void calc_hauptroutine_calc_deco(void) |
| 1426 { | |
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1427 overlay unsigned char loop; |
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1428 |
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1429 for(loop = 0; loop < 16; ++loop) |
| 116 | 1430 { |
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1431 // Limit loops to 512ms, using the RTC timer 3: |
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1432 if( tmr3() & (512*32) ) |
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1433 break; |
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1434 |
| 241 | 1435 // Do not ascent while doing a gas switch ? |
| 203 | 1436 if( sim_gas_delay <= sim_dive_mins ) |
| 1437 { | |
| 241 | 1438 if( calc_nextdecodepth() ) |
| 1439 { | |
| 1440 if( temp_depth_limit == 0 ) | |
| 1441 goto Surface; | |
| 116 | 1442 |
| 241 | 1443 //---- We hit a stop at temp_depth_limit --------------------- |
| 1444 temp_deco = temp_depth_limit * 0.09985 // Convert to relative bar, | |
| 1445 + pres_surface; // To absolute. | |
| 1446 update_deco_table(); // Adds a one minute stops. | |
| 1447 } | |
| 1448 else | |
| 1449 { | |
| 1450 //---- No stop ----------------------------------------------- | |
| 1451 temp_deco -= 0.9985; // Ascend 10m, no wait. | |
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1452 |
| 241 | 1453 //---- Finish computations once surface is reached ----------- |
| 1454 if( temp_deco <= pres_surface ) | |
| 1455 { | |
| 1456 Surface: | |
| 1457 copy_deco_table(); | |
| 1458 calc_ascenttime(); | |
| 1459 char_O_deco_status = 0; // calc nullzeit next time. | |
| 1460 return; | |
| 1461 } | |
| 1462 } | |
| 212 | 1463 } |
| 1464 else | |
| 241 | 1465 update_deco_table(); // Just pass one minute. |
| 197 | 1466 |
| 241 | 1467 //---- Then update tissue -------------------------------------------- |
| 203 | 1468 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1469 gas_switch_set(); // Apply any simulated gas change, once validated. |
| 212 | 1470 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1471 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1472 } |
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1473 |
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1474 // Surface not reached, need more stops... |
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1475 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1476 } |
| 1477 | |
| 167 | 1478 ////////////////////////////////////////////////////////////////////////////// |
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1479 // Simulation ascention to first deco stop. |
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1480 // |
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1481 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1482 // there is no need to break on more that 16 iterations |
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1483 // (or we are already in deep shit). |
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1484 // |
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1485 void sim_ascent_to_first_stop(void) |
| 116 | 1486 { |
| 171 | 1487 update_startvalues(); |
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1488 clear_deco_table(); |
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1489 |
| 200 | 1490 temp_deco = pres_respiration; // Starts from current real depth. |
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1491 |
| 212 | 1492 // Do we have a gas switch going on ? |
| 1493 if( sim_gas_delay > sim_dive_mins ) | |
| 1494 return; | |
| 1495 | |
| 241 | 1496 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1497 for(;;) |
| 116 | 1498 { |
| 241 | 1499 // Try ascending 1 full minute. |
| 1500 temp_deco -= 0.9985; // 1 min, at 10m/min. ~ 1bar. | |
| 203 | 1501 |
| 212 | 1502 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1503 sim_limit(GF_low); | |
| 1504 | |
| 1505 // Did we reach deepest remaining stop ? | |
| 241 | 1506 if( temp_deco < sim_lead_tissue_limit ) |
| 212 | 1507 { |
| 241 | 1508 temp_deco += 0.9985; // Restore last correct depth, |
| 1509 break; // End fast ascent. | |
| 212 | 1510 } |
| 1511 | |
| 203 | 1512 // Did we reach surface ? |
| 1513 if( temp_deco <= pres_surface ) | |
| 1514 { | |
| 1515 temp_deco = pres_surface; // Yes: finished ! | |
| 1516 break; | |
| 1517 } | |
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1518 |
| 241 | 1519 // Check for gas change below new depth ? |
| 1520 temp_depth_limit = (temp_deco - pres_surface) / 0.09985; | |
| 1521 | |
| 1522 if( gas_switch_deepest() ) | |
| 1523 { | |
| 1524 temp_deco = temp_depth_limit * 0.09985 + pres_surface; | |
| 212 | 1525 break; |
| 241 | 1526 } |
| 171 | 1527 |
| 203 | 1528 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1529 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
| 203 | 1530 sim_tissue(1); // and update tissues for 1 min. |
| 1531 } | |
| 167 | 1532 } |
| 116 | 1533 |
| 167 | 1534 ////////////////////////////////////////////////////////////////////////////// |
| 1535 // calc_tissue | |
| 1536 // | |
| 116 | 1537 // optimized in v.101 |
| 167 | 1538 // |
| 184 | 1539 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1540 { |
| 251 | 1541 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1542 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1543 |
| 126 | 1544 for (ci=0;ci<16;ci++) |
| 1545 { | |
| 258 | 1546 read_buhlmann_times(period); // 2 sec or 1 min period. |
| 116 | 1547 |
| 126 | 1548 // N2 |
| 236 | 1549 temp_tissue = (ppN2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1550 temp_tissue_safety(); |
| 167 | 1551 pres_tissue[ci] += temp_tissue; |
| 165 | 1552 |
| 126 | 1553 // He |
| 200 | 1554 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1555 temp_tissue_safety(); |
| 167 | 1556 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1557 } |
| 167 | 1558 } |
| 116 | 1559 |
| 167 | 1560 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1561 // calc_limit |
| 167 | 1562 // |
| 192 | 1563 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1564 // |
| 258 | 1565 static void calc_limit(void) |
| 167 | 1566 { |
| 192 | 1567 char_O_gtissue_no = 255; |
| 1568 calc_lead_tissue_limit = 0.0; | |
| 1569 | |
| 1570 for (ci=0;ci<16;ci++) | |
| 1571 { | |
| 1572 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1573 | |
| 258 | 1574 read_buhlmann_coefficients(); |
| 192 | 1575 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; |
| 1576 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1577 |
| 192 | 1578 // Apply the Eric Baker's varying gradient factor correction. |
| 1579 // Note: the correction factor depends both on GF and b, | |
| 1580 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1581 // so that can change who is the leading gas... | |
| 1582 // Note: Also depends of the GF. So the calcul is different for | |
| 1583 // GF_low, current GF, or GF_high... | |
| 1584 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1585 // hence what would happend at surface, | |
| 1586 // hence at GF_high. | |
| 1587 if( char_I_deco_model == 1 ) | |
| 258 | 1588 p = ( p - var_N2_a * GF_high) * var_N2_b |
| 1589 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
| 192 | 1590 else |
| 1591 p = (p - var_N2_a) * var_N2_b; | |
| 258 | 1592 if( p < 0.0 ) p = 0.0; |
| 192 | 1593 |
| 1594 if( p > calc_lead_tissue_limit ) | |
| 1595 { | |
| 1596 char_O_gtissue_no = ci; | |
| 1597 calc_lead_tissue_limit = p; | |
| 1598 } | |
| 1599 } | |
| 197 | 1600 |
| 1601 assert( char_O_gtissue_no < 16 ); | |
| 1602 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1603 } |
| 1604 | |
| 1605 ////////////////////////////////////////////////////////////////////////////// | |
| 1606 // calc_nullzeit | |
| 1607 // | |
| 1608 // calculates the remaining bottom time | |
| 1609 // | |
| 1610 // unchanged in v.101 | |
| 1611 // | |
| 1612 static void calc_nullzeit(void) | |
| 1613 { | |
| 203 | 1614 overlay unsigned char loop; |
| 200 | 1615 update_startvalues(); |
| 167 | 1616 |
| 116 | 1617 char_O_nullzeit = 0; |
| 167 | 1618 for(loop = 1; loop <= 17; loop++) |
| 116 | 1619 { |
| 1620 backup_sim_pres_tissue(); | |
| 197 | 1621 sim_tissue(2); // 10 min. |
| 192 | 1622 sim_limit(GF_high); |
| 167 | 1623 |
| 192 | 1624 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1625 { |
| 1626 restore_sim_pres_tissue(); | |
| 1627 break; | |
| 1628 } | |
| 1629 // Validate once we know its good. | |
| 1630 char_O_nullzeit += 10; | |
| 167 | 1631 } |
| 1632 | |
| 116 | 1633 if (char_O_nullzeit < 60) |
| 1634 { | |
| 167 | 1635 for(loop=1; loop <= 10; loop++) |
| 116 | 1636 { |
| 197 | 1637 sim_tissue(1); // 1 min |
| 192 | 1638 sim_limit(GF_high); |
| 1639 | |
| 1640 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1641 break; |
| 1642 char_O_nullzeit++; | |
| 167 | 1643 } |
| 185 | 1644 } |
| 1645 } | |
| 116 | 1646 |
| 167 | 1647 ////////////////////////////////////////////////////////////////////////////// |
| 1648 // backup_sim_pres_tissue | |
| 1649 // | |
| 116 | 1650 void backup_sim_pres_tissue(void) |
| 1651 { | |
| 167 | 1652 overlay unsigned char x; |
| 1653 | |
| 1654 for(x = 0; x<32; x++) | |
| 126 | 1655 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1656 } |
| 116 | 1657 |
| 167 | 1658 ////////////////////////////////////////////////////////////////////////////// |
| 1659 // restore_sim_pres_tissue | |
| 1660 // | |
| 116 | 1661 void restore_sim_pres_tissue(void) |
| 1662 { | |
| 167 | 1663 overlay unsigned char x; |
| 1664 | |
| 1665 for(x = 0; x<32; x++) | |
| 126 | 1666 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1667 } |
| 116 | 1668 |
| 167 | 1669 ////////////////////////////////////////////////////////////////////////////// |
| 1670 // calc_ascenttime | |
| 1671 // | |
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1672 static void calc_ascenttime(void) |
| 116 | 1673 { |
| 126 | 1674 if (pres_respiration > pres_surface) |
| 1675 { | |
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1676 overlay unsigned char x; |
| 168 | 1677 |
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1678 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
| 192 | 1679 overlay float ascent = pres_respiration - pres_surface + 0.7; |
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1680 if (ascent < 0.0) |
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1681 ascent = 0.0; |
| 203 | 1682 int_O_ascenttime = (unsigned short)(ascent + 0.99); |
| 168 | 1683 |
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1684 for(x=0; x<32 && internal_deco_depth[x]; x++) |
| 203 | 1685 int_O_ascenttime += (unsigned short)internal_deco_time[x]; |
| 126 | 1686 } |
| 1687 else | |
| 168 | 1688 int_O_ascenttime = 0; |
| 167 | 1689 } |
| 116 | 1690 |
| 167 | 1691 ////////////////////////////////////////////////////////////////////////////// |
| 1692 // update_startvalues | |
| 1693 // | |
| 116 | 1694 // updated in v.102 |
| 167 | 1695 // |
| 116 | 1696 void update_startvalues(void) |
| 1697 { | |
| 167 | 1698 overlay unsigned char x; |
| 116 | 1699 |
| 201 | 1700 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1701 for (x = 0;x<16;x++) |
| 1702 { | |
| 1703 sim_pres_tissue[x] = pres_tissue[x]; | |
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1704 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1705 } |
| 197 | 1706 |
| 201 | 1707 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1708 sim_lead_tissue_limit = 0.0; |
| 1709 sim_lead_tissue_no = 255; | |
| 167 | 1710 } |
| 116 | 1711 |
| 167 | 1712 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1713 // sim_tissue |
| 167 | 1714 // |
| 116 | 1715 // optimized in v.101 |
| 167 | 1716 // |
| 1717 // Function very simular to calc_tissue, but: | |
| 1718 // + Use a 1min or 10min period. | |
| 1719 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1720 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1721 { |
| 251 | 1722 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1723 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1724 |
| 192 | 1725 for(ci=0; ci<16; ci++) |
| 126 | 1726 { |
| 258 | 1727 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
| 165 | 1728 |
| 126 | 1729 // N2 |
| 236 | 1730 temp_tissue = (ppN2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1731 temp_tissue_safety(); |
| 167 | 1732 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1733 |
| 1734 // He | |
| 200 | 1735 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1736 temp_tissue_safety(); |
| 167 | 1737 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1738 } |
| 167 | 1739 } |
| 116 | 1740 |
| 167 | 1741 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1742 // sim_limit() |
| 1743 // | |
| 1744 // New in v.111 | |
| 1745 // | |
| 1746 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1747 // different depth, because it depends on current gradient factor. | |
| 167 | 1748 // |
| 192 | 1749 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1750 { |
| 212 | 1751 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1752 | |
| 192 | 1753 sim_lead_tissue_limit = 0.0; |
| 212 | 1754 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1755 |
| 1756 for(ci=0; ci<16; ci++) | |
| 1757 { | |
| 241 | 1758 overlay float N2 = sim_pres_tissue[ci]; |
| 1759 overlay float He = (sim_pres_tissue+16)[ci]; | |
| 1760 overlay float p = N2 + He; | |
| 192 | 1761 |
| 258 | 1762 read_buhlmann_coefficients(); |
| 241 | 1763 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
| 1764 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 192 | 1765 |
| 1766 // Apply the Eric Baker's varying gradient factor correction. | |
| 1767 // Note: the correction factor depends both on GF and b, | |
| 1768 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1769 // so that can change who is the leading gas... | |
| 1770 // Note: Also depends of the GF_current... | |
| 1771 if( char_I_deco_model == 1 ) | |
| 1772 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1773 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1774 else | |
| 1775 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1776 if( p < 0.0 ) p = 0.0; |
| 192 | 1777 |
| 1778 if( p > sim_lead_tissue_limit ) | |
| 1779 { | |
| 1780 sim_lead_tissue_no = ci; | |
| 1781 sim_lead_tissue_limit = p; | |
| 1782 } | |
| 1783 } // for ci | |
| 197 | 1784 |
| 1785 assert( sim_lead_tissue_no < 16 ); | |
| 237 | 1786 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1787 } |
| 116 | 1788 |
| 167 | 1789 ////////////////////////////////////////////////////////////////////////////// |
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1790 // clear_deco_table |
| 167 | 1791 // |
| 1792 // unchanged in v.101 | |
| 1793 // | |
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1794 static void clear_deco_table(void) |
| 116 | 1795 { |
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1796 overlay unsigned char x; |
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1797 |
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1798 for(x=0; x<32; ++x) |
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1799 { |
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1800 internal_deco_time [x] = 0; |
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1801 internal_deco_depth[x] = 0; |
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1802 } |
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1803 } |
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1804 |
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1805 ////////////////////////////////////////////////////////////////////////////// |
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1806 // update_deco_table |
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1807 // |
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1808 // Add 1 min to current stop. |
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1809 // |
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1810 // Inputs: |
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1811 // temp_depth_limit = stop's depth, in meters. |
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1812 // In/Out: |
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1813 // internal_deco_depth[] : depth (in metres) of each stops. |
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1814 // internal_deco_time [] : time (in minutes) of each stops. |
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1815 // |
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1816 static void update_deco_table() |
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1817 { |
| 192 | 1818 overlay unsigned char x; |
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1819 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1820 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1821 |
| 192 | 1822 for(x=0; x<32; ++x) |
| 1823 { | |
| 212 | 1824 // Make sure deco-stops are recorded in order: |
| 1825 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
| 1826 | |
| 200 | 1827 if( internal_deco_depth[x] == temp_depth_limit ) |
| 192 | 1828 { |
| 1829 // Do not overflow (max 255') | |
| 1830 if( internal_deco_time[x] < 255 ) | |
| 1831 { | |
| 1832 internal_deco_time[x]++; | |
| 1833 return; | |
| 1834 } | |
| 1835 // But store extra in the next stop... | |
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1836 } |
| 192 | 1837 |
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1838 if( internal_deco_depth[x] == 0 ) |
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1839 { |
| 192 | 1840 internal_deco_depth[x] = temp_depth_limit; |
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1841 internal_deco_time[x] = 1; |
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1842 return; |
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1843 } |
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1844 } |
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1845 |
| 192 | 1846 // Can't store stops at more than 96m. |
| 1847 // Or stops at less that 3m too. | |
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1848 // Just do nothing with that... |
| 167 | 1849 } |
| 116 | 1850 |
| 167 | 1851 ////////////////////////////////////////////////////////////////////////////// |
| 1852 // calc_gradient_factor | |
| 1853 // | |
| 165 | 1854 // optimized in v.101 (var_N2_a) |
| 116 | 1855 // new code in v.102 |
| 167 | 1856 // |
| 1857 static void calc_gradient_factor(void) | |
| 116 | 1858 { |
| 197 | 1859 overlay float gf; |
| 237 | 1860 |
| 197 | 1861 assert( char_O_gtissue_no < 16 ); |
| 237 | 1862 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1863 |
| 116 | 1864 // tissue > respiration (entsaettigungsvorgang) |
| 1865 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1866 // dh. 0% = respiration == tissue | |
| 1867 // dh. 100% = respiration == limit | |
| 197 | 1868 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
| 1869 if( temp_tissue < pres_respiration ) | |
| 1870 gf = 0.0; | |
| 1871 else | |
| 1872 { | |
| 1873 gf = (temp_tissue - pres_respiration) | |
| 258 | 1874 / (temp_tissue - calc_lead_tissue_limit) |
| 197 | 1875 * 100.0; |
| 1876 if( gf > 255.0 ) gf = 255.0; | |
| 1877 if( gf < 0.0 ) gf = 0.0; | |
| 1878 } | |
| 1879 char_O_gradient_factor = (unsigned char)gf; | |
| 116 | 1880 |
| 1881 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1882 { | |
| 197 | 1883 overlay float rgf; |
| 1884 | |
| 1885 if( low_depth == 0 ) | |
| 1886 rgf = GF_high; | |
| 1887 else | |
| 1888 { | |
| 241 | 1889 overlay float temp1 = low_depth * 0.09985; |
| 197 | 1890 overlay float temp2 = pres_respiration - pres_surface; |
| 186 | 1891 |
| 197 | 1892 if (temp2 <= 0) |
| 1893 rgf = GF_high; | |
| 1894 else if (temp2 >= temp1) | |
| 1895 rgf = GF_low; | |
| 1896 else | |
| 1897 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1898 } | |
| 186 | 1899 |
| 197 | 1900 rgf = gf / rgf; // gf is already in percent |
| 1901 if( rgf < 0.0 ) rgf = 0.0; | |
| 1902 if( rgf > 255.0 ) rgf = 255.0; | |
| 1903 char_O_relative_gradient_GF = (unsigned char)rgf; | |
| 116 | 1904 } // calc relative gradient factor |
| 1905 else | |
| 1906 { | |
| 186 | 1907 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1908 } |
| 167 | 1909 } |
| 116 | 1910 |
| 167 | 1911 ////////////////////////////////////////////////////////////////////////////// |
| 1912 // deco_calc_desaturation_time | |
| 1913 // | |
| 116 | 1914 // FIXED N2_ratio |
| 1915 // unchanged in v.101 | |
| 233 | 1916 // Inputs: int_I_pres_surface, ppWVapour, char_I_desaturation_multiplier |
| 1917 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] | |
| 167 | 1918 // |
| 116 | 1919 void deco_calc_desaturation_time(void) |
| 1920 { | |
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1921 RESET_C_STACK |
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1922 |
| 233 | 1923 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 1924 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 1925 | |
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1926 #ifndef CROSS_COMPILE |
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1927 // Note: we don't use far rom pointer, because the |
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1928 // 24 bits is to complex, hence we have to set |
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1929 // the UPPER page ourself... |
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1930 // --> Set zero if tables are moved to lower pages ! |
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1931 _asm |
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1932 movlw 1 |
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1933 movwf TBLPTRU,0 |
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1934 _endasm |
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1935 #endif |
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1936 |
| 237 | 1937 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 1938 pres_surface = int_I_pres_surface * 0.001; |
| 236 | 1939 ppN2 = N2_ratio * (pres_surface - ppWVapour); |
| 126 | 1940 int_O_desaturation_time = 0; |
| 1941 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 233 | 1942 |
| 126 | 1943 for (ci=0;ci<16;ci++) |
| 1944 { | |
| 251 | 1945 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 1946 overlay float temp1; | |
| 1947 overlay float temp2; | |
| 1948 overlay float temp3; | |
| 1949 overlay float temp4; | |
| 1950 | |
| 126 | 1951 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1952 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1953 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
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1954 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
| 126 | 1955 // N2 |
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1956 temp1 = 1.05 * ppN2 - pres_tissue[ci]; |
| 236 | 1957 temp2 = ppN2 - pres_tissue[ci]; |
| 126 | 1958 if (temp2 >= 0.0) |
| 1959 { | |
| 233 | 1960 temp1 = 0.0; |
| 1961 temp2 = 0.0; | |
| 126 | 1962 } |
| 1963 else | |
| 1964 temp1 = temp1 / temp2; | |
| 251 | 1965 if( 0.0 < temp1 && temp1 < 1.0 ) |
| 126 | 1966 { |
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1967 overlay float var_N2_halftime = buhlmann_ht[ci]; |
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1968 assert( 4.0 <= var_N2_halftime && var_N2_halftime <= 635.0 ); |
| 252 | 1969 |
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1970 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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1971 // minus because log is negative. |
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1972 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
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1973 temp2 = var_N2_halftime * temp1 / float_desaturation_multiplier; // time necessary (in minutes ) for complete desaturation (see comment about 5 percent) , new in v.101: float_desaturation_multiplier |
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1974 |
| 126 | 1975 } |
| 1976 else | |
| 1977 { | |
| 233 | 1978 temp1 = 0.0; |
| 1979 temp2 = 0.0; | |
| 126 | 1980 } |
| 116 | 1981 |
| 126 | 1982 // He |
| 167 | 1983 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1984 if (temp3 >= 0.0) |
| 1985 { | |
| 233 | 1986 temp3 = 0.0; |
| 1987 temp4 = 0.0; | |
| 126 | 1988 } |
| 1989 else | |
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1990 temp3 = - temp3 / (pres_tissue+16)[ci]; |
| 251 | 1991 if( 0.0 < temp3 && temp3 < 1.0 ) |
| 126 | 1992 { |
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1993 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; |
| 261 | 1994 assert( 1.51 <= var_He_halftime && var_He_halftime <= 240.03 ); |
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1995 |
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1996 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
| 126 | 1997 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
| 1998 // minus because log is negative | |
| 165 | 1999 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 2000 } |
| 2001 else | |
| 2002 { | |
| 233 | 2003 temp3 = 0.0; |
| 2004 temp4 = 0.0; | |
| 126 | 2005 } |
| 116 | 2006 |
| 126 | 2007 // saturation_time (for flight) |
| 2008 if (temp4 > temp2) | |
| 203 | 2009 desat_time = (unsigned short)temp4; |
| 126 | 2010 else |
| 203 | 2011 desat_time = (unsigned short)temp2; |
| 252 | 2012 |
| 251 | 2013 if(desat_time > int_O_desaturation_time) |
| 2014 int_O_desaturation_time = desat_time; | |
| 116 | 2015 |
| 126 | 2016 // N2 saturation in multiples of halftime for display purposes |
| 2017 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 2018 temp2 = temp2 + 80.0; // set center | |
| 2019 if (temp2 < 0.0) | |
| 2020 temp2 = 0.0; | |
| 2021 if (temp2 > 255.0) | |
| 2022 temp2 = 255.0; | |
| 2023 char_O_tissue_saturation[ci] = (char)temp2; | |
| 233 | 2024 |
| 126 | 2025 // He saturation in multiples of halftime for display purposes |
| 2026 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 2027 temp4 = temp4 + 80.0; // set center | |
| 2028 if (temp4 < 0.0) | |
| 2029 temp4 = 0.0; | |
| 2030 if (temp4 > 255.0) | |
| 2031 temp4 = 255.0; | |
| 167 | 2032 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 2033 } // for |
| 167 | 2034 } |
| 116 | 2035 |
| 167 | 2036 ////////////////////////////////////////////////////////////////////////////// |
| 2037 // calc_wo_deco_step_1_min | |
| 2038 // | |
| 116 | 2039 // FIXED N2 Ratio |
| 2040 // optimized in v.101 (...saturation_multiplier) | |
| 2041 // desaturation slowed down to 70,42% | |
| 167 | 2042 // |
| 2043 static void calc_wo_deco_step_1_min(void) | |
| 116 | 2044 { |
| 251 | 2045 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2046 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
| 2047 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
| 2048 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2049 | |
| 116 | 2050 if(flag_in_divemode) |
| 2051 { | |
| 2052 flag_in_divemode = 0; | |
| 2053 set_dbg_end_of_dive(); | |
| 2054 } | |
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2055 |
| 126 | 2056 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 233 | 2057 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
| 2058 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
| 236 | 2059 ppN2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body |
| 200 | 2060 ppHe = 0.0; |
| 126 | 2061 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 2062 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 2063 |
| 192 | 2064 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 2065 |
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2066 clear_deco_table(); |
| 200 | 2067 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 2068 char_O_nullzeit = 0; |
| 168 | 2069 int_O_ascenttime = 0; |
| 126 | 2070 calc_gradient_factor(); |
| 167 | 2071 } |
| 126 | 2072 |
| 167 | 2073 ////////////////////////////////////////////////////////////////////////////// |
| 2074 ////////////////////////////////////////////////////////////////////////////// | |
| 2075 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 2076 ////////////////////////////////////////////////////////////////////////////// | |
| 2077 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 2078 |
| 184 | 2079 #ifndef CROSS_COMPILE |
| 116 | 2080 void deco_hash(void) |
| 2081 { | |
| 167 | 2082 overlay unsigned char md_i, md_j; // Loop index. |
| 2083 overlay unsigned char md_t; | |
| 2084 overlay unsigned char md_buffer[16]; | |
| 2085 overlay unsigned char md_temp; | |
| 203 | 2086 overlay unsigned short md_pointer; |
| 167 | 2087 |
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2088 RESET_C_STACK |
| 126 | 2089 |
| 2090 // init | |
| 164 | 2091 for(md_i=0;md_i<16;md_i++) |
| 126 | 2092 { |
| 2093 md_state[md_i] = 0; | |
| 164 | 2094 char_O_hash[md_i] = 0; |
| 126 | 2095 } // for md_i 16 |
| 116 | 2096 |
| 126 | 2097 _asm |
| 167 | 2098 movlw 0x01 // md_pi address. |
| 2099 movwf TBLPTRU,0 | |
| 2100 movlw 0x7E | |
| 2101 movwf TBLPTRH,0 | |
| 2102 movlw 0x00 | |
| 2103 movwf TBLPTRL,0 | |
| 126 | 2104 _endasm; |
| 165 | 2105 md_i = 0; |
| 2106 do { | |
| 126 | 2107 _asm |
| 2108 TBLRDPOSTINC | |
| 2109 movff TABLAT,md_temp | |
| 2110 _endasm | |
| 165 | 2111 md_pi_subst[md_i++] = md_temp; |
| 2112 } while( md_i != 0 ); | |
| 2113 | |
| 126 | 2114 _asm |
| 167 | 2115 movlw 0x00 |
| 2116 movwf TBLPTRU,0 | |
| 2117 movlw 0x00 | |
| 2118 movwf TBLPTRH,0 | |
| 2119 movlw 0x00 | |
| 2120 movwf TBLPTRL,0 | |
| 126 | 2121 _endasm |
| 167 | 2122 |
| 126 | 2123 // cycle buffers |
| 2124 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 2125 { | |
| 2126 md_t = 0; | |
| 2127 for (md_i=0;md_i<16;md_i++) | |
| 2128 { | |
| 2129 if(md_pointer == 9) | |
| 164 | 2130 md_temp = char_O_hash[md_i]; |
| 126 | 2131 else |
| 2132 { | |
| 2133 _asm | |
| 167 | 2134 TBLRDPOSTINC |
| 2135 movff TABLAT,md_temp | |
| 126 | 2136 _endasm |
| 2137 } // else | |
| 167 | 2138 |
| 2139 md_buffer[md_i] = md_temp; | |
| 186 | 2140 md_state[md_i+16] = md_temp; |
| 2141 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2142 } // for md_i 16 |
| 2143 | |
| 2144 for (md_i=0;md_i<18;md_i++) | |
| 2145 { | |
| 2146 for (md_j=0;md_j<48;md_j++) | |
| 2147 { | |
| 167 | 2148 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2149 md_t = md_state[md_j]; |
| 2150 } // for md_j 48 | |
| 2151 md_t = (unsigned char)(md_t+1); | |
| 2152 } // for md_i 18 | |
| 164 | 2153 md_t = char_O_hash[15]; |
| 126 | 2154 |
| 2155 for (md_i=0;md_i<16;md_i++) | |
| 2156 { | |
| 167 | 2157 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2158 md_t = char_O_hash[md_i]; |
| 126 | 2159 } // for md_i 16 |
| 2160 } // for md_pointer | |
| 116 | 2161 } // void deco_hash(void) |
| 184 | 2162 #endif |
| 116 | 2163 |
| 167 | 2164 ////////////////////////////////////////////////////////////////////////////// |
| 2165 // deco_clear_CNS_fraction | |
| 2166 // | |
| 116 | 2167 // new in v.101 |
| 167 | 2168 // |
| 116 | 2169 void deco_clear_CNS_fraction(void) |
| 2170 { | |
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2171 RESET_C_STACK |
| 237 | 2172 |
| 126 | 2173 CNS_fraction = 0.0; |
| 2174 char_O_CNS_fraction = 0; | |
| 167 | 2175 } |
| 116 | 2176 |
| 167 | 2177 ////////////////////////////////////////////////////////////////////////////// |
| 2178 // deco_calc_CNS_fraction | |
| 2179 // | |
| 116 | 2180 // new in v.101 |
| 2181 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 2182 // |
| 116 | 2183 // Input: char_I_actual_ppO2 |
| 2184 // Output: char_O_CNS_fraction | |
| 2185 // Uses and Updates: CNS_fraction | |
| 2186 // Uses: acutal_ppO2 | |
| 167 | 2187 // |
| 116 | 2188 void deco_calc_CNS_fraction(void) |
| 2189 { | |
| 167 | 2190 overlay float actual_ppO2; |
| 126 | 2191 RESET_C_STACK |
| 167 | 2192 |
| 237 | 2193 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); |
| 2194 assert( char_I_actual_ppO2 > 15 ); | |
| 2195 | |
| 126 | 2196 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 2197 |
| 126 | 2198 if (char_I_actual_ppO2 < 50) |
| 2199 CNS_fraction = CNS_fraction;// no changes | |
| 2200 else if (char_I_actual_ppO2 < 60) | |
| 2201 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 2202 else if (char_I_actual_ppO2 < 70) | |
| 2203 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 2204 else if (char_I_actual_ppO2 < 80) | |
| 2205 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 2206 else if (char_I_actual_ppO2 < 90) | |
| 2207 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 2208 else if (char_I_actual_ppO2 < 110) | |
| 2209 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 2210 else if (char_I_actual_ppO2 < 150) | |
| 2211 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 2212 else if (char_I_actual_ppO2 < 160) | |
| 2213 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 2214 else if (char_I_actual_ppO2 < 165) | |
| 2215 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 | |
| 2216 else if (char_I_actual_ppO2 < 170) | |
| 2217 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 2218 else if (char_I_actual_ppO2 < 175) | |
| 2219 CNS_fraction = 0.00136 + CNS_fraction; | |
| 2220 else if (char_I_actual_ppO2 < 180) | |
| 2221 CNS_fraction = 0.00180 + CNS_fraction; | |
| 2222 else if (char_I_actual_ppO2 < 185) | |
| 2223 CNS_fraction = 0.00237 + CNS_fraction; | |
| 2224 else if (char_I_actual_ppO2 < 190) | |
| 2225 CNS_fraction = 0.00310 + CNS_fraction; | |
| 2226 else if (char_I_actual_ppO2 < 195) | |
| 2227 CNS_fraction = 0.00401 + CNS_fraction; | |
| 2228 else if (char_I_actual_ppO2 < 200) | |
| 2229 CNS_fraction = 0.00517 + CNS_fraction; | |
| 2230 else if (char_I_actual_ppO2 < 230) | |
| 2231 CNS_fraction = 0.0209 + CNS_fraction; | |
| 2232 else | |
| 2233 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 2234 |
| 126 | 2235 if (CNS_fraction > 2.5) |
| 2236 CNS_fraction = 2.5; | |
| 2237 if (CNS_fraction < 0.0) | |
| 2238 CNS_fraction = 0.0; | |
| 2239 | |
| 2240 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2241 } |
| 116 | 2242 |
| 167 | 2243 ////////////////////////////////////////////////////////////////////////////// |
| 2244 // deco_calc_CNS_decrease_15min | |
| 2245 // | |
| 116 | 2246 // new in v.101 |
| 167 | 2247 // |
| 116 | 2248 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2249 // (Used in sleepmode, for low battery mode). |
| 167 | 2250 // |
| 116 | 2251 // Output: char_O_CNS_fraction |
| 2252 // Uses and Updates: CNS_fraction | |
| 167 | 2253 // |
| 116 | 2254 void deco_calc_CNS_decrease_15min(void) |
| 2255 { | |
| 237 | 2256 RESET_C_STACK |
| 2257 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
| 2258 | |
| 126 | 2259 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2260 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2261 } | |
| 116 | 2262 |
| 167 | 2263 ////////////////////////////////////////////////////////////////////////////// |
| 2264 // deco_calc_percentage | |
| 2265 // | |
| 116 | 2266 // new in v.101 |
| 167 | 2267 // |
| 116 | 2268 // calculates int_I_temp * char_I_temp / 100 |
| 2269 // output is int_I_temp | |
| 200 | 2270 // |
| 2271 // Used to compute NoFly remaining time. | |
|
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2272 // |
| 116 | 2273 void deco_calc_percentage(void) |
| 2274 { | |
|
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2275 RESET_C_STACK |
|
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2276 |
| 237 | 2277 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 2278 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
| 2279 | |
|
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2280 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2281 |
| 2282 assert( int_I_temp < 1440 ); // Less than 24h... | |
|
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2283 } |
|
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2284 |
|
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2285 |
|
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2286 ////////////////////////////////////////////////////////////////////////////// |
|
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2287 // deco_gas_volumes |
|
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2288 // |
|
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2289 // new in v.111 |
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2290 // |
|
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2291 // calculates volumes for each gas. |
|
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2292 // |
|
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2293 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
d995e220ddac
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2294 // Gas list. |
|
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2295 // char_I_first_gas is the bottom gas. |
|
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2296 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
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2297 // CF#54 == TRUE if shallowest stop first. |
|
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2298 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) or bar/min. |
|
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2299 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0) or bar/min. |
| 224 | 2300 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
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2301 // |
|
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2302 void deco_gas_volumes(void) |
|
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2303 { |
|
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2304 overlay float volumes[5]; |
| 265 | 2305 overlay float bottom_usage, ascent_usage; |
|
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2306 overlay unsigned char i, deepest_first; |
| 241 | 2307 overlay unsigned char gas; |
|
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2308 RESET_C_STACK |
|
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2309 |
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|
2310 //---- initialize with bottom consumption -------------------------------- |
|
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2311 for(i=0; i<5; ++i) // Nothing yet... |
|
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|
2312 volumes[i] = 0.0; |
|
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2313 |
| 241 | 2314 assert(1 <= char_I_first_gas && char_I_first_gas <= 5); |
| 2315 gas = char_I_first_gas - 1; | |
| 2316 | |
| 265 | 2317 bottom_usage = read_custom_function(56) * 0.1; |
| 2318 if( bottom_usage > 0.0 ) | |
| 2319 volumes[gas] | |
| 2320 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
| 2321 * char_I_bottom_time // in minutes. | |
| 2322 * bottom_usage; // In liter/minutes. | |
| 2323 else | |
| 2324 volumes[gas] = 65535.0; | |
|
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|
2325 |
|
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|
2326 //---- Ascent usage ------------------------------------------------------ |
|
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2327 |
|
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2328 deepest_first = read_custom_function(54) == 0; |
|
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|
2329 ascent_usage = read_custom_function(57) * 0.1; // In liter/minutes. |
|
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2330 |
| 224 | 2331 // Usage up to the first stop: |
| 2332 // - computed at MAX depth (easier, safer), | |
|
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2333 // - with an ascent speed of 10m/min. |
| 224 | 2334 // - with ascent litter / minutes. |
|
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|
2335 // - still using bottom gas: |
| 265 | 2336 if( ascent_usage > 0.0 ) |
| 2337 volumes[gas] | |
| 2338 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar | |
| 2339 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) | |
| 2340 * ascent_usage; // Consumption ( xxx / min @ 1 bar) | |
| 2341 else | |
| 2342 volumes[gas] = 65535.0; | |
|
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2343 |
|
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2344 for(i=0; i<32; ++i) |
|
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|
2345 { |
| 241 | 2346 overlay unsigned char j; |
|
234
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2347 overlay unsigned char depth, time, ascent; |
|
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|
2348 |
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2349 // Manage stops in reverse order (CF#54) |
|
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2350 if( deepest_first ) |
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|
2351 { |
| 241 | 2352 time = char_O_deco_time[i]; |
|
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2353 if( time == 0 ) break; // End of table: done. |
|
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2354 |
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2355 ascent = depth = char_O_deco_depth[i]; |
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2356 if( i < 31 ) |
|
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2357 ascent -= char_O_deco_depth[i+1]; |
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2358 } |
|
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2359 else |
|
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2360 { |
|
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2361 time = char_O_deco_time[31-i]; |
|
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2362 if( time == 0 ) continue; // not yet: still searh table. |
|
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2363 |
|
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2364 ascent = depth = char_O_deco_depth[31-i]; |
|
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2365 if( i < 31 ) |
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2366 ascent -= char_O_deco_depth[30-i]; |
|
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2367 } |
|
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|
2368 |
|
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|
2369 // Gas switch depth ? |
| 241 | 2370 for(j=0; j<5; ++j) |
|
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2371 { |
|
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2372 if( depth <= char_I_deco_gas_change[j] ) |
| 241 | 2373 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 224 | 2374 gas = j; |
|
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|
2375 } |
|
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|
2376 |
|
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|
2377 // usage during stop: |
| 224 | 2378 // Note: because first gas is not in there, increment gas+1 |
| 265 | 2379 if( ascent_usage > 0.0 ) |
| 2380 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. | |
| 2381 * time // in minutes. | |
| 2382 * ascent_usage // in xxx / min @ 1bar. | |
| 2383 // Plus usage during ascent to the next stop, at 10m/min. | |
| 2384 + (depth*0.1 + 1.0) | |
|
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2385 * ascent*0.1 // metre --> min |
| 265 | 2386 * ascent_usage; |
| 2387 else | |
| 2388 volumes[gas] = 65535.0; | |
|
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|
2389 } |
|
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|
2390 |
|
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|
2391 //---- convert results for the ASM interface ----------------------------- |
|
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|
2392 for(i=0; i<5; ++i) |
| 224 | 2393 if( volumes[i] > 6553.4 ) |
| 2394 int_O_gas_volumes[i] = 65535; | |
|
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2395 else |
| 224 | 2396 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
| 116 | 2397 } |
| 2398 | |
| 167 | 2399 ////////////////////////////////////////////////////////////////////////////// |
| 2400 | |
| 116 | 2401 void deco_push_tissues_to_vault(void) |
| 2402 { | |
| 167 | 2403 overlay unsigned char x; |
|
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2404 RESET_C_STACK |
| 167 | 2405 |
| 116 | 2406 cns_vault = CNS_fraction; |
| 167 | 2407 for (x=0;x<32;x++) |
| 2408 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2409 } |
| 167 | 2410 |
| 116 | 2411 void deco_pull_tissues_from_vault(void) |
| 2412 { | |
| 167 | 2413 overlay unsigned char x; |
|
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2414 RESET_C_STACK |
| 167 | 2415 |
| 116 | 2416 CNS_fraction = cns_vault; |
| 167 | 2417 for (x=0;x<32;x++) |
| 2418 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2419 } |
| 2420 | |
| 167 | 2421 ////////////////////////////////////////////////////////////////////////////// |
| 2422 // | |
| 184 | 2423 #ifndef CROSS_COMPILE |
| 2424 void main() {} | |
| 2425 #endif |