Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 317:1de9eee3837b
Minor cleanup in depth convertion for EAD/END.
| author | JeanDo |
|---|---|
| date | Wed, 04 May 2011 11:59:51 +0200 |
| parents | b7e4e74c0e17 |
| children | a99073445c18 |
| 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. |
|
293
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75 // 2011/04/10: [jDG] Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco(). |
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76 // 2011/04/15: [jDG] Store low_depth in 32bits (w/o rounding), for a better stability. |
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293
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77 // 2011/04/25: [jDG] Added 1mn mode for CNS calculation, to allow it for decoplanning. |
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78 // 2011/04/27: [jDG] Fixed char_O_gradient_factor calculation when model uses gradient-factor. |
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312
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79 // 2011/05/02: [jDG] Added @+5min variant. |
| 116 | 80 // |
| 167 | 81 // TODO: |
| 82 // + Allow to abort MD2 calculation (have to restart next time). | |
| 83 // | |
| 84 // Literature: | |
| 200 | 85 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 86 // 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 |
| 87 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 88 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 89 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 90 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 91 // |
| 92 // | |
| 116 | 93 |
| 94 // ********************* | |
| 95 // ** I N C L U D E S ** | |
| 96 // ********************* | |
| 97 #include <math.h> | |
| 167 | 98 |
| 192 | 99 // *********************************************** |
| 100 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 101 // *********************************************** | |
| 102 | |
| 103 #include "p2_definitions.h" | |
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104 #define TEST_MAIN |
| 192 | 105 #include "shared_definitions.h" |
| 106 | |
| 200 | 107 // Water vapour partial pressure in the lumb. |
| 317 | 108 #define ppWater 0.0627 |
| 109 #define METER_TO_BAR 0.09985 | |
| 110 #define BAR_TO_METER 10.0150 // (1.0/METER_TO_BAR) | |
| 200 | 111 |
| 167 | 112 // ************************* |
| 113 // ** P R O T O T Y P E S ** | |
| 114 // ************************* | |
| 115 | |
| 116 static void calc_hauptroutine(void); | |
| 117 static void calc_nullzeit(void); | |
| 118 | |
| 192 | 119 static void calc_tissue(PARAMETER unsigned char period); |
| 258 | 120 static void calc_limit(void); |
| 192 | 121 |
| 167 | 122 static void clear_tissue(void); |
| 123 static void calc_ascenttime(void); | |
| 124 static void update_startvalues(void); | |
|
169
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125 static void clear_deco_table(void); |
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126 static void update_deco_table(void); |
| 192 | 127 |
| 128 static void backup_sim_pres_tissue(void); | |
| 129 static void restore_sim_pres_tissue(void); | |
| 130 static void sim_tissue(PARAMETER unsigned char period); | |
| 131 static void sim_limit(PARAMETER float GF_current); | |
|
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132 static void sim_extra_time(void); |
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133 |
| 167 | 134 static void calc_gradient_factor(void); |
| 135 static void calc_wo_deco_step_1_min(void); | |
| 136 | |
| 137 static void calc_hauptroutine_data_input(void); | |
| 138 static void calc_hauptroutine_update_tissues(void); | |
| 139 static void calc_hauptroutine_calc_deco(void); | |
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140 static void sim_ascent_to_first_stop(void); |
| 167 | 141 |
| 241 | 142 static unsigned char gas_switch_deepest(void); |
| 143 static void gas_switch_set(void); | |
| 217 | 144 |
| 241 | 145 static unsigned char calc_nextdecodepth(void); |
| 116 | 146 |
| 200 | 147 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 148 #pragma udata bank4=0x400 |
| 116 | 149 |
| 150 static float temp_limit; | |
| 151 static float GF_low; | |
| 152 static float GF_high; | |
| 153 static float GF_delta; | |
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154 static float low_depth; // Depth of deepest stop |
| 192 | 155 static float locked_GF_step; // GF_delta / low_depth |
| 156 | |
| 157 static unsigned char temp_depth_limit; | |
| 171 | 158 |
| 192 | 159 // Simulation context: used to predict ascent. |
| 160 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 161 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 162 |
| 192 | 163 // Real context: what we are doing now. |
| 164 static float calc_lead_tissue_limit; // | |
| 116 | 165 |
|
169
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166 static unsigned char internal_deco_time[32]; |
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167 static unsigned char internal_deco_depth[32]; |
| 116 | 168 |
| 169 static float cns_vault; | |
| 170 static float pres_tissue_vault[32]; | |
| 171 | |
| 163 | 172 //---- Bank 5 parameters ----------------------------------------------------- |
| 173 #pragma udata bank5=0x500 | |
| 174 | |
| 167 | 175 static unsigned char ci; |
| 116 | 176 static float pres_respiration; |
| 177 static float pres_surface; | |
| 178 static float temp_deco; | |
| 236 | 179 static float ppN2; |
| 200 | 180 static float ppHe; |
| 116 | 181 static float temp_tissue; |
| 200 | 182 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 183 static float He_ratio; // Breathed gas helium ratio. | |
| 184 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 185 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 186 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 187 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 188 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 189 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 190 |
| 164 | 191 static float pres_diluent; // new in v.101 |
| 192 static float const_ppO2; // new in v.101 | |
| 193 static float deco_ppO2_change; // new in v.101 | |
| 194 static float deco_ppO2; // new in v.101 | |
| 116 | 195 |
| 241 | 196 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
| 197 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
| 203 | 198 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 199 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 200 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 201 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 202 static float CNS_fraction; // new in v.101 | |
| 203 static float float_saturation_multiplier; // new in v.101 | |
| 204 static float float_desaturation_multiplier; // new in v.101 | |
| 167 | 205 static float float_deco_distance; // new in v.101 |
| 206 static char flag_in_divemode; // new in v.108 | |
| 207 | |
| 225 | 208 static unsigned char deco_gas_change[5]; // new in v.109 |
| 167 | 209 |
| 163 | 210 //---- Bank 6 parameters ----------------------------------------------------- |
| 211 #pragma udata bank6=0x600 | |
| 116 | 212 |
| 197 | 213 float pres_tissue[32]; |
| 116 | 214 |
| 163 | 215 //---- Bank 7 parameters ----------------------------------------------------- |
| 216 #pragma udata bank7=0x700 | |
| 217 | |
| 197 | 218 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
| 116 | 219 static float sim_pres_tissue_backup[32]; |
| 220 | |
| 163 | 221 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 222 #pragma udata bank8=0x800 |
| 163 | 223 |
| 116 | 224 static char md_pi_subst[256]; |
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225 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 226 |
| 163 | 227 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 228 #pragma udata bank9=0x900 |
| 116 | 229 |
| 163 | 230 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 231 |
| 164 | 232 // internal, dbg: |
| 167 | 233 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 234 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 235 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 224 | 236 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
| 237 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
| 164 | 238 static float DBG_pres_surface; // new in v.108 |
| 239 static float DBG_GF_low; // new in v.108 | |
| 240 static float DBG_GF_high; // new in v.108 | |
| 241 static float DBG_const_ppO2; // new in v.108 | |
| 242 static float DBG_deco_ppO2_change; // new in v.108 | |
| 243 static float DBG_deco_ppO2; // new in v.108 | |
| 244 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 245 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 246 static float DBG_float_deco_distance; // new in v.108 | |
| 247 static float DBG_N2_ratio; // new in v.108 | |
| 248 static float DBG_He_ratio; // new in v.108 | |
| 249 | |
| 167 | 250 ////////////////////////////////////////////////////////////////////////////// |
| 251 ////////////////////////////////////////////////////////////////////////////// | |
| 252 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 253 ////////////////////////////////////////////////////////////////////////////// | |
| 254 ////////////////////////////////////////////////////////////////////////////// | |
| 255 // | |
| 256 // End of PROM code is 17F00, So push tables on PROM top... | |
| 257 // | |
| 258 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 259 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 260 |
| 167 | 261 // Magic table to compute the MD2 HASH |
| 262 // | |
| 263 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 264 rom const rom unsigned short md_pi[] = |
| 116 | 265 { |
| 266 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 267 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 268 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 269 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 270 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 271 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 272 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 273 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 274 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 275 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 276 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 277 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 278 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 279 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 280 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 281 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 282 }; | |
| 283 | |
| 167 | 284 ////////////////////////////////////////////////////////////////////////////// |
| 285 ////////////////////////////////////////////////////////////////////////////// | |
| 286 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 287 ////////////////////////////////////////////////////////////////////////////// | |
| 288 ////////////////////////////////////////////////////////////////////////////// | |
| 289 // | |
| 116 | 290 // all new in v.102 |
| 291 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 292 | |
| 293 #pragma code p2_deco = 0x0C000 | |
| 294 | |
| 167 | 295 ////////////////////////////////////////////////////////////////////////////// |
| 296 // DBS - debug on start of dive | |
| 297 // | |
| 298 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 299 { |
| 167 | 300 overlay char i; // Local loop index. |
| 301 | |
| 302 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 303 int_O_DBS_bitfield = 0; |
| 304 int_O_DBS2_bitfield = 0; | |
| 305 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 306 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 307 else | |
| 308 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 309 int_O_DBG_post_bitfield = 0; | |
| 167 | 310 |
| 311 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 312 char_O_NDL_at_20mtr = 255; |
| 313 | |
| 167 | 314 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 315 DBG_N2_ratio = N2_ratio; |
| 316 DBG_He_ratio = He_ratio; | |
| 317 DBG_char_I_deco_model = char_I_deco_model; | |
| 318 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 319 DBG_pres_surface = pres_surface; | |
| 320 DBG_GF_low = GF_low; | |
| 321 DBG_GF_high = GF_high; | |
| 322 DBG_const_ppO2 = const_ppO2; | |
| 323 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 324 DBG_deco_ppO2 = deco_ppO2; | |
| 224 | 325 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 326 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 327 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 328 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 329 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 330 DBG_float_deco_distance = float_deco_distance; | |
| 331 | |
| 167 | 332 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 333 if(char_I_deco_model) |
| 334 int_O_DBS_bitfield |= DBS_mode; | |
| 335 if(const_ppO2) | |
| 336 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 337 for(i = 16; i < 32; i++) |
| 338 if(pres_tissue[i]) | |
| 116 | 339 int_O_DBS_bitfield |= DBS_HE_sat; |
| 340 if(deco_ppO2_change) | |
| 341 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 342 if(float_saturation_multiplier < 0.99) | |
| 343 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 344 if(float_saturation_multiplier > 1.3) | |
| 345 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 346 if(GF_low < 0.19) | |
| 347 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 348 if(GF_low > 1.01) | |
| 349 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 350 if(GF_high < 0.6) | |
| 351 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 352 if(GF_high > 1.01) | |
| 353 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 354 if((N2_ratio + He_ratio) > 0.95) | |
| 355 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 356 if((N2_ratio + He_ratio) < 0.05) | |
| 357 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 358 if(float_deco_distance > 0.25) | |
| 359 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 360 if(char_I_depth_last_deco > 8) | |
| 361 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 362 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 363 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 364 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 365 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 366 if(pres_respiration > 3.0) | |
| 367 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 368 if(pres_surface - pres_respiration > 0.2) | |
| 369 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 370 if(pres_surface < 0.75) | |
| 371 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 372 if(pres_surface > 1.11) | |
| 373 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 374 if(float_desaturation_multiplier < 0.70) | |
| 375 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 376 if(float_desaturation_multiplier > 1.01) | |
| 377 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 378 if(GF_low > GF_high) | |
| 379 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 380 } | |
| 381 | |
| 167 | 382 ////////////////////////////////////////////////////////////////////////////// |
| 383 // DBG - set DBG to end_of_dive | |
| 384 // | |
| 385 static void set_dbg_end_of_dive(void) | |
| 116 | 386 { |
| 387 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 388 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 389 } | |
| 390 | |
| 167 | 391 ////////////////////////////////////////////////////////////////////////////// |
| 392 // DBG - NDL at first 20 m. hit | |
| 393 // | |
| 394 static void check_ndl(void) | |
| 116 | 395 { |
| 167 | 396 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 397 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 398 ) | |
| 116 | 399 { |
| 167 | 400 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 401 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 402 char_O_NDL_at_20mtr = 254; |
| 116 | 403 } |
| 404 } | |
| 405 | |
| 167 | 406 ////////////////////////////////////////////////////////////////////////////// |
| 407 // DBG - multi main during dive | |
| 408 // | |
| 184 | 409 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 410 { |
| 203 | 411 overlay unsigned short temp_DBS = 0; |
| 200 | 412 overlay unsigned char i; // Local loop index. |
| 167 | 413 |
| 116 | 414 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 415 temp_DBS |= DBG_c_gas; | |
| 416 if(DBG_const_ppO2 != const_ppO2) | |
| 417 temp_DBS |= DBG_c_ppO2; | |
| 167 | 418 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 419 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 420 ) | |
| 116 | 421 temp_DBS |= DBG_CdeSAT; |
| 422 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 423 temp_DBS |= DBG_C_MODE; | |
| 424 if(DBG_pres_surface != pres_surface) | |
| 425 temp_DBS |= DBG_C_SURF; | |
| 167 | 426 |
| 427 if( !DBS_HE_sat && !He_ratio) | |
| 428 for(i = 16; i < 32; i++) | |
| 429 if(pres_tissue[i]) | |
| 116 | 430 temp_DBS |= DBG_HEwoHE; |
| 167 | 431 |
| 116 | 432 if(DBG_deco_ppO2 != deco_ppO2) |
| 433 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 434 |
| 225 | 435 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 436 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 437 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 438 temp_DBS |= DBG_C_DGAS; |
| 167 | 439 |
| 116 | 440 if(DBG_float_deco_distance != float_deco_distance) |
| 441 temp_DBS |= DBG_C_DIST; | |
| 442 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 443 temp_DBS |= DBG_C_LAST; | |
| 167 | 444 if( DBG_GF_low != GF_low |
| 445 || DBG_GF_high != GF_high ) | |
| 116 | 446 temp_DBS |= DBG_C_GF; |
| 447 if(pres_respiration > 13.0) | |
| 448 temp_DBS |= DBG_PHIGH; | |
| 449 if(pres_surface - pres_respiration > 0.2) | |
| 450 temp_DBS |= DBG_PLOW; | |
| 451 if(is_post_check) | |
| 452 int_O_DBG_post_bitfield |= temp_DBS; | |
| 453 else | |
| 454 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 455 } | |
| 456 | |
| 167 | 457 ////////////////////////////////////////////////////////////////////////////// |
| 458 // DBG - prior to calc. of dive | |
| 459 // | |
| 460 static void check_pre_dbg(void) | |
| 116 | 461 { |
| 462 check_dbg(0); | |
| 463 } | |
| 464 | |
| 167 | 465 ////////////////////////////////////////////////////////////////////////////// |
| 466 // DBG - after decocalc of dive | |
| 467 // | |
| 468 static void check_post_dbg(void) | |
| 116 | 469 { |
| 470 check_dbg(1); | |
| 471 } | |
| 472 | |
| 165 | 473 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 474 ////////////////////////////////////////////////////////////////////////////// |
| 475 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 476 ////////////////////////////////////////////////////////////////////////////// | |
| 477 ////////////////////////////////////////////////////////////////////////////// | |
| 478 | |
| 235 | 479 ////////////////////////////////////////////////////////////////////////////// |
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480 // Bump to blue-screen when an assert is wrong |
| 235 | 481 #ifdef __DEBUG |
| 482 void assert_failed(PARAMETER short int line) | |
| 483 { | |
| 484 extern void PLED_resetdebugger(void); | |
| 485 extern unsigned short temp10; | |
| 486 | |
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487 temp10 = line; // Show source line number as stack depth. |
| 235 | 488 PLED_resetdebugger(); |
| 489 } | |
| 490 #endif | |
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491 |
| 235 | 492 ////////////////////////////////////////////////////////////////////////////// |
| 493 // When calling C code from ASM context, the data stack pointer and | |
| 494 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
| 495 | |
| 496 #ifdef CROSS_COMPILE | |
| 497 # define RESET_C_STACK | |
| 498 #else | |
| 499 # ifdef __DEBUG | |
| 500 # define RESET_C_STACK fillDataStack(); | |
| 501 void fillDataStack(void) | |
| 502 { | |
| 503 _asm | |
| 504 LFSR 1,C_STACK | |
| 505 MOVLW 0xCC | |
| 506 loop: MOVWF POSTINC1,0 | |
| 507 TSTFSZ FSR1L,0 | |
| 508 BRA loop | |
| 509 | |
| 510 LFSR 1,C_STACK | |
| 511 LFSR 2,C_STACK | |
| 512 _endasm | |
| 513 } | |
| 514 # else | |
| 515 # define RESET_C_STACK \ | |
| 516 _asm \ | |
| 517 LFSR 1, C_STACK \ | |
| 518 LFSR 2, C_STACK \ | |
| 519 _endasm | |
| 520 # endif | |
| 521 #endif | |
| 522 | |
| 523 ////////////////////////////////////////////////////////////////////////////// | |
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524 // Read CF values from the C code. |
| 235 | 525 |
| 203 | 526 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 527 { |
| 184 | 528 #ifdef CROSS_COMPILE |
| 529 extern unsigned short custom_functions[]; | |
| 530 return custom_functions[cf]; | |
| 531 #else | |
| 167 | 532 extern unsigned char hi, lo; |
| 533 extern void getcustom15(); | |
| 534 _asm | |
| 535 movff cf,WREG | |
| 536 call getcustom15,0 | |
| 537 movff lo,PRODL | |
| 538 movff hi,PRODH | |
| 539 _endasm | |
| 184 | 540 #endif |
| 167 | 541 } |
| 542 | |
| 543 ////////////////////////////////////////////////////////////////////////////// | |
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544 // Fast subroutine to read RTC timer 3. |
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545 // Note: result is in 1/32 of msecs. |
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546 static unsigned short tmr3(void) |
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547 { |
| 261 | 548 #ifndef CROSS_COMPILE |
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549 _asm |
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550 movff 0xfb2,PRODL // TMR3L |
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551 movff 0xfb3,PRODH // TMR3H |
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552 _endasm // result in PRODH:PRODL. |
| 261 | 553 #else |
| 554 return 0; | |
| 555 #endif | |
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556 } |
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557 |
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558 ////////////////////////////////////////////////////////////////////////////// |
| 258 | 559 // read buhlmann tables A and B for compatriment ci |
| 560 // | |
| 561 static void read_buhlmann_coefficients(void) | |
| 165 | 562 { |
| 184 | 563 #ifndef CROSS_COMPILE |
| 167 | 564 // Note: we don't use far rom pointer, because the |
| 565 // 24 bits is to complex, hence we have to set | |
| 566 // the UPPER page ourself... | |
| 567 // --> Set zero if tables are moved to lower pages ! | |
| 568 _asm | |
| 569 movlw 1 | |
| 570 movwf TBLPTRU,0 | |
| 571 _endasm | |
| 184 | 572 #endif |
| 258 | 573 |
| 197 | 574 assert( 0 <= ci && ci < 16 ); |
| 165 | 575 var_N2_a = buhlmann_a[ci]; |
| 576 var_N2_b = buhlmann_b[ci]; | |
| 167 | 577 var_He_a = (buhlmann_a+16)[ci]; |
| 578 var_He_b = (buhlmann_b+16)[ci]; | |
| 579 | |
| 165 | 580 // Check reading consistency: |
| 581 if( (var_N2_a < 0.231) | |
| 582 || (var_N2_a > 1.27) | |
| 583 || (var_N2_b < 0.504) | |
| 584 || (var_N2_b > 0.966) | |
| 585 || (var_He_a < 0.510) | |
| 586 || (var_He_a > 1.75) | |
| 587 || (var_He_b < 0.423) | |
| 588 || (var_He_b > 0.927) | |
| 589 ) | |
| 258 | 590 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; |
| 591 } | |
| 592 | |
| 593 ////////////////////////////////////////////////////////////////////////////// | |
| 594 // read buhlmann tables for compatriment ci | |
| 595 // If period == 0 : 2sec interval | |
| 596 // 1 : 1 min interval | |
| 597 // 2 : 10 min interval. | |
| 598 static void read_buhlmann_times(PARAMETER char period) | |
| 599 { | |
| 600 #ifndef CROSS_COMPILE | |
| 601 // Note: we don't use far rom pointer, because the | |
| 602 // 24 bits is to complex, hence we have to set | |
| 603 // the UPPER page ourself... | |
| 604 // --> Set zero if tables are moved to lower pages ! | |
| 605 _asm | |
| 606 movlw 1 | |
| 607 movwf TBLPTRU,0 | |
| 608 _endasm | |
| 609 #endif | |
| 610 assert( 0 <= ci && ci < 16 ); | |
| 611 | |
| 165 | 612 // Integration intervals. |
| 167 | 613 switch(period) |
| 165 | 614 { |
| 615 case 0: //---- 2 sec ----------------------------------------------------- | |
| 616 var_N2_e = e2secs[ci]; | |
| 167 | 617 var_He_e = (e2secs+16)[ci]; |
| 165 | 618 |
| 619 // Check reading consistency: | |
| 620 if( (var_N2_e < 0.0000363) | |
| 621 || (var_N2_e > 0.00577) | |
| 622 || (var_He_e < 0.0000961) | |
| 623 || (var_He_e > 0.150) | |
| 624 ) | |
| 625 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 626 | |
| 627 break; | |
| 628 | |
| 629 case 1: //---- 1 min ----------------------------------------------------- | |
| 630 var_N2_e = e1min[ci]; | |
| 167 | 631 var_He_e = (e1min+16)[ci]; |
| 165 | 632 |
| 633 // Check reading consistency: | |
| 634 if( (var_N2_e < 1.09E-3) | |
| 635 || (var_N2_e > 0.1592) | |
| 636 || (var_He_e < 0.00288) | |
| 637 || (var_He_e > 0.3682) | |
| 638 ) | |
| 639 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 640 | |
| 641 break; | |
| 642 | |
| 643 case 2: //---- 10 min ---------------------------------------------------- | |
| 644 var_N2_e = e10min[ci]; | |
| 167 | 645 var_He_e = (e10min+16)[ci]; |
| 165 | 646 |
| 647 // Check reading consistency: | |
| 648 if( (var_N2_e < 0.01085) | |
| 649 || (var_N2_e > 0.82323) | |
| 650 || (var_He_e < 0.02846) | |
| 651 || (var_He_e > 0.98986) | |
| 652 ) | |
| 653 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 654 | |
| 655 break; | |
| 197 | 656 |
| 657 default: | |
| 658 assert(0); // Never go there... | |
| 165 | 659 } |
| 660 } | |
| 661 | |
| 662 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 663 // calc_next_decodepth_GF |
| 165 | 664 // |
| 116 | 665 // new in v.102 |
| 165 | 666 // |
| 116 | 667 // INPUT, changing during dive: |
| 192 | 668 // low_depth |
| 167 | 669 // |
| 116 | 670 // INPUT, fixed during dive: |
| 167 | 671 // pres_surface |
| 672 // GF_delta | |
| 673 // GF_high | |
| 674 // GF_low | |
| 171 | 675 // char_I_depth_last_deco |
| 167 | 676 // float_deco_distance |
| 677 // | |
| 241 | 678 // RETURN TRUE iff a stop is needed. |
| 679 // | |
| 116 | 680 // OUTPUT |
| 171 | 681 // locked_GF_step |
| 167 | 682 // temp_depth_limt |
| 192 | 683 // low_depth |
| 167 | 684 // |
| 241 | 685 static unsigned char calc_nextdecodepth(void) |
| 167 | 686 { |
| 241 | 687 //--- Max ascent speed --------------------------------------------------- |
| 688 // Recompute leading gas limit, at current depth: | |
| 317 | 689 overlay float depth = (temp_deco - pres_surface) * BAR_TO_METER; |
| 241 | 690 |
| 691 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
| 302 | 692 overlay float min_depth = (depth > 10.0) ? (depth - 10.0) : 0.0; |
| 241 | 693 |
| 694 // Do we need to stop at current depth ? | |
| 695 overlay unsigned char need_stop = 0; | |
| 696 | |
| 697 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
| 698 | |
| 212 | 699 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 700 if (char_I_deco_model == 1) |
| 701 { | |
| 241 | 702 if( depth >= low_depth ) |
| 192 | 703 sim_limit( GF_low ); |
| 704 else | |
| 705 sim_limit( GF_high - depth * locked_GF_step ); | |
| 706 | |
| 707 // Stops are needed ? | |
| 708 if( sim_lead_tissue_limit > pres_surface ) | |
| 709 { | |
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710 // Compute tolerated depth, for the leading tissue [metre]: |
| 317 | 711 overlay float depth_tol = (sim_lead_tissue_limit - pres_surface) * BAR_TO_METER; |
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712 |
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713 // Deepest stop, in multiples of 3 metres. |
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714 overlay unsigned char first_stop = 3 * (short)(0.99999 + depth_tol * 0.33333 ); |
| 192 | 715 assert( first_stop < 128 ); |
| 171 | 716 |
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717 // Is it a new deepest needed stop ? If yes this is the reference for |
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718 // the varying gradient factor. So reset that: |
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719 if( depth_tol > min_depth && depth_tol > low_depth ) |
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720 { |
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721 // Store the deepest stop depth, as reference for GF_low. |
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722 low_depth = depth_tol; |
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723 locked_GF_step = GF_delta / low_depth; |
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724 } |
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725 |
| 264 | 726 #if defined(__DEBUG) || defined(CROSS_COMPILE) |
| 261 | 727 { |
| 728 // Extra testing code to make sure the first_stop formula | |
| 729 // and rounding provides correct depth: | |
| 317 | 730 overlay float pres_stop = first_stop * METER_TO_BAR |
| 261 | 731 + pres_surface; |
| 732 | |
| 733 // Keep GF_low until a first stop depth is found: | |
| 734 if( first_stop >= low_depth ) | |
| 735 sim_limit( GF_low ); | |
| 736 else | |
| 737 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 738 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 739 sim_limit( GF_high - first_stop * locked_GF_step ); | |
| 740 | |
| 302 | 741 // upper limit (lowest pressure tolerated), + 1mbar for rounding...: |
| 742 assert( sim_lead_tissue_limit < (pres_stop + 0.001) ); | |
| 261 | 743 } |
| 744 #endif | |
| 745 | |
| 212 | 746 // Apply correction for the shallowest stop. |
| 192 | 747 if( first_stop == 3 ) // new in v104 |
| 748 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 749 |
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750 // Because gradient factor at first_stop might be bigger than at |
| 261 | 751 // current depth, we might ascent a bit more. |
| 752 // Hence, check all stops until one is indeed higher than tolerated presure: | |
| 753 while(first_stop > 0) | |
| 192 | 754 { |
| 755 overlay unsigned char next_stop; // Next index (0..30) | |
| 756 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 757 |
| 241 | 758 // Check max speed, or reaching surface. |
| 759 if( first_stop <= min_depth ) | |
| 760 break; | |
| 761 | |
| 762 // So, there is indeed a stop needed: | |
| 763 need_stop = 1; | |
| 764 | |
| 192 | 765 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 766 next_stop = 0; | |
| 216 | 767 else if( first_stop == 6 ) |
| 768 next_stop = char_I_depth_last_deco; | |
| 192 | 769 else |
| 770 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 771 |
| 317 | 772 pres_stop = next_stop * METER_TO_BAR |
| 192 | 773 + pres_surface; |
| 774 | |
| 212 | 775 // Keep GF_low until a first stop depth is found: |
| 776 if( next_stop >= low_depth ) | |
| 777 sim_limit( GF_low ); | |
| 778 else | |
| 779 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 780 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 781 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 782 |
| 192 | 783 // upper limit (lowest pressure tolerated): |
| 784 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 785 break; | |
| 786 | |
| 787 // Else, validate that stop and loop... | |
| 788 first_stop = next_stop; | |
| 212 | 789 } |
| 790 | |
| 791 // next stop is the last validated depth found, aka first_stop | |
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792 temp_depth_limit = first_stop; // Stop depth, in metre. |
| 192 | 793 } |
| 171 | 794 else |
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795 temp_depth_limit = 0; // stop depth, in metre. |
| 116 | 796 } |
| 167 | 797 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 798 { |
| 192 | 799 overlay float pres_gradient; |
| 800 | |
| 801 // Original model | |
| 116 | 802 // optimized in v.101 |
| 171 | 803 // char_I_depth_last_deco included in v.101 |
| 116 | 804 |
| 192 | 805 // Compute sim_lead_tissue_limit too, but just once. |
| 806 sim_limit(1.0); | |
| 807 | |
| 808 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 809 if (pres_gradient >= 0) |
| 116 | 810 { |
| 317 | 811 pres_gradient *= BAR_TO_METER/3; // Bar --> stop number; |
|
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812 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
| 241 | 813 need_stop = 1; // Hit. |
| 814 | |
| 815 // Implement last stop at 4m/5m/6m... | |
| 816 if( temp_depth_limit == 3 ) | |
| 817 temp_depth_limit = char_I_depth_last_deco; | |
| 171 | 818 } |
| 116 | 819 else |
| 241 | 820 temp_depth_limit = 0; |
| 171 | 821 } |
| 212 | 822 |
| 217 | 823 //---- Check gas change -------------------------------------------------- |
| 241 | 824 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
| 825 | |
| 826 return need_stop; | |
| 167 | 827 } |
| 116 | 828 |
| 167 | 829 ////////////////////////////////////////////////////////////////////////////// |
|
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830 // copy_deco_table |
| 167 | 831 // |
|
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832 // Buffer the stops, once computed, so we can continue to display them |
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833 // while computing the next set. |
| 167 | 834 // |
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835 static void copy_deco_table(void) |
| 116 | 836 { |
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837 // Copy depth of the first (deepest) stop, because when reversing |
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838 // order, it will be hard to find... |
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839 char_O_first_deco_depth = internal_deco_depth[0] & 0x7F; |
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840 char_O_first_deco_time = internal_deco_time [0]; |
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841 |
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842 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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843 { |
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844 overlay unsigned char x, y; |
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845 |
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846 //---- First: search the first non-null depth |
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847 for(x=31; x != 0; --x) |
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848 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 849 |
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850 //---- Second: copy to output table (in reverse order) |
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851 for(y=0; y<32; y++, --x) |
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852 { |
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853 char_O_deco_depth[y] = internal_deco_depth[x]; |
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854 char_O_deco_time [y] = internal_deco_time [x]; |
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855 |
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856 // Stop only once the last transfer is done. |
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857 if( x == 0 ) break; |
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858 } |
| 116 | 859 |
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860 //---- Third: fill table end with null |
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861 for(y++; y<32; y++) |
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862 { |
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863 char_O_deco_time [y] = 0; |
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864 char_O_deco_depth[y] = 0; |
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865 } |
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866 } |
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867 else //---- Straight copy ------------------------------------------------ |
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868 { |
| 167 | 869 overlay unsigned char x; |
| 870 | |
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871 for(x=0; x<32; x++) |
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872 { |
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873 char_O_deco_depth[x] = internal_deco_depth[x]; |
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874 char_O_deco_time [x] = internal_deco_time [x]; |
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875 } |
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876 } |
| 167 | 877 } |
| 116 | 878 |
| 167 | 879 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 880 // temp_tissue_safety // |
| 167 | 881 // |
| 116 | 882 // outsourced in v.102 |
| 167 | 883 // |
| 884 // Apply safety factors for brand ZH-L16 model. | |
| 885 // | |
| 886 static void temp_tissue_safety(void) | |
| 116 | 887 { |
| 197 | 888 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 889 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 890 | |
| 167 | 891 if( char_I_deco_model == 0 ) |
| 116 | 892 { |
| 893 if (temp_tissue < 0.0) | |
| 126 | 894 temp_tissue *= float_desaturation_multiplier; |
| 116 | 895 else |
| 126 | 896 temp_tissue *= float_saturation_multiplier; |
| 116 | 897 } |
| 167 | 898 } |
| 116 | 899 |
| 167 | 900 ////////////////////////////////////////////////////////////////////////////// |
| 901 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 902 // ** THE JUMP-IN CODE ** |
| 903 // ** for the asm code ** | |
| 167 | 904 ////////////////////////////////////////////////////////////////////////////// |
| 905 ////////////////////////////////////////////////////////////////////////////// | |
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906 |
| 167 | 907 ////////////////////////////////////////////////////////////////////////////// |
|
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908 // Called every 2 seconds during diving. |
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909 // update tissues every time. |
| 184 | 910 // |
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911 // Every 6 seconds (or slower when TTS > 16): |
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912 // - update deco table (char_O_deco_time/depth) with new values. |
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913 // - update ascent time, |
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914 // - set status to zero (so we can check there is new results). |
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915 // |
| 116 | 916 void deco_calc_hauptroutine(void) |
| 917 { | |
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918 RESET_C_STACK |
| 116 | 919 calc_hauptroutine(); |
| 920 int_O_desaturation_time = 65535; | |
| 921 } | |
| 922 | |
| 167 | 923 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 924 // Reset decompression model: |
| 925 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 926 // + Reset last stop to 0m | |
| 927 // + Reset all model output. | |
| 116 | 928 void deco_clear_tissue(void) |
| 929 { | |
|
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930 RESET_C_STACK |
| 116 | 931 clear_tissue(); |
| 932 } | |
| 933 | |
| 167 | 934 ////////////////////////////////////////////////////////////////////////////// |
| 278 | 935 // Called every 1 min during decoplanning. |
| 936 // Update tissues for 1 min. | |
| 937 // | |
| 938 void deco_calc_tissue(void) | |
| 939 { | |
| 940 RESET_C_STACK | |
| 941 calc_hauptroutine_update_tissues(); | |
| 942 } | |
| 943 | |
| 944 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 945 |
| 116 | 946 void deco_calc_wo_deco_step_1_min(void) |
| 947 { | |
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948 RESET_C_STACK |
| 116 | 949 calc_wo_deco_step_1_min(); |
| 950 deco_calc_desaturation_time(); | |
| 951 } | |
| 952 | |
| 167 | 953 ////////////////////////////////////////////////////////////////////////////// |
| 954 | |
| 116 | 955 void deco_debug(void) |
| 956 { | |
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957 RESET_C_STACK |
| 116 | 958 } |
| 959 | |
| 241 | 960 |
| 961 ////////////////////////////////////////////////////////////////////////////// | |
| 962 // Find current gas in the list (if any). | |
| 963 // | |
| 964 // Input: char_I_deco_N2_ratio[] and He, to detect breathed gas. | |
| 965 // | |
| 966 // Output: sim_gas_depth_used | |
| 967 // | |
| 968 static void gas_switch_find_current(void) | |
| 969 { | |
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970 overlay unsigned char j; |
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971 overlay unsigned char N2 = (unsigned char)(N2_ratio * 100 + 0.5); |
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972 overlay unsigned char He = (unsigned char)(He_ratio * 100 + 0.5); |
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973 |
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974 for(j=0; j<5; ++j) |
| 241 | 975 { |
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976 // Make sure to detect if we are already breathing some gas in |
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977 // the current list (happends when first gas do have a depth). |
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978 if( N2 == char_I_deco_N2_ratio[j] |
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979 && He == char_I_deco_He_ratio[j] |
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980 ) |
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981 { |
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982 if( char_I_deco_gas_change[j] ) |
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983 temp_depth_limit = sim_gas_last_depth = char_I_deco_gas_change[j]; |
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984 sim_gas_last_used = j+1; |
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985 break; |
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986 } |
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987 } |
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988 |
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989 // If there is no gas-switch-delay running ? |
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990 if( sim_gas_delay <= sim_dive_mins) |
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991 { |
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992 // Compute current depth: |
| 317 | 993 overlay unsigned char depth = (unsigned char)((pres_respiration - pres_surface) * BAR_TO_METER); |
|
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994 assert( depth < 130 ); |
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995 |
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996 // And if I'm above the last decostop (with the 3m margin) ? |
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997 if( (sim_gas_last_depth-3) > depth ) |
| 241 | 998 { |
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999 for(j=0; j<5; ++j) |
| 241 | 1000 { |
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1001 // And If I am in the range of a valide stop ? |
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1002 // (again, with the same 3m margin) |
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1003 if( char_I_deco_gas_change[j] |
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1004 && depth <= char_I_deco_gas_change[j] |
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1005 && depth >= (char_I_deco_gas_change[j] - 3) |
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1006 ) |
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1007 { |
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1008 // Then start gas-switch timer there, |
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1009 sim_gas_delay = sim_dive_mins |
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1010 + read_custom_function(55); |
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1011 |
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1012 // And make sure decostop will be recorded at the right depth. |
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1013 temp_depth_limit = char_I_deco_gas_change[j]; |
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1014 break; |
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1015 } |
| 241 | 1016 } |
| 1017 } | |
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1018 else |
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1019 // Make clear there is no deay anymore. |
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1020 sim_gas_delay = 0; |
| 241 | 1021 } |
| 1022 } | |
| 1023 | |
| 167 | 1024 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 1025 // Find deepest available gas. |
| 201 | 1026 // |
| 241 | 1027 // Input: temp_depth_limit, |
| 1028 // deco_gas_change[] | |
| 1029 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
| 212 | 1030 // |
| 241 | 1031 // RETURNS TRUE if a stop is needed for gas switch. |
| 1032 // | |
| 1033 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
| 212 | 1034 // |
| 241 | 1035 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
| 1036 // are null), or during the ascent to make sure we are not passing a | |
| 1037 // stop (in which case both can be already set). | |
| 1038 // | |
| 1039 static unsigned char gas_switch_deepest(void) | |
| 201 | 1040 { |
| 241 | 1041 overlay unsigned char switch_deco = 0, switch_last = 0; |
| 201 | 1042 |
| 1043 if (char_I_const_ppO2 == 0) | |
| 1044 { | |
| 225 | 1045 overlay unsigned char j; |
| 1046 | |
| 241 | 1047 // Loop over all enabled gas, to find the deepest one, |
| 1048 // above las gas, but below temp_depth_limit. | |
| 1049 for(j=0; j<5; ++j) | |
| 225 | 1050 { |
| 241 | 1051 // Gas not (yet) allowed ? Skip ! |
| 1052 if( temp_depth_limit > deco_gas_change[j] ) | |
| 1053 continue; | |
| 1054 | |
| 1055 // Gas deeper than the current/previous one ? Skip ! | |
| 1056 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) | |
| 1057 continue; | |
| 1058 | |
| 1059 // First, or deeper ? | |
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1060 if( switch_deco < deco_gas_change[j] ) |
| 241 | 1061 { |
| 1062 switch_deco = deco_gas_change[j]; | |
| 1063 switch_last = j+1; | |
| 1064 } | |
| 225 | 1065 } |
| 201 | 1066 } |
| 1067 | |
| 203 | 1068 // If there is a better gas available |
| 241 | 1069 if( switch_deco ) |
| 201 | 1070 { |
| 241 | 1071 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
| 201 | 1072 |
| 241 | 1073 // Should restart gas-switch delay only when gas do changes... |
| 1074 assert( sim_gas_delay <= sim_dive_mins ); | |
| 217 | 1075 |
| 241 | 1076 sim_gas_last_depth = switch_deco; |
| 1077 sim_gas_last_used = switch_last; | |
| 1078 sim_gas_delay = read_custom_function(55); | |
| 217 | 1079 |
| 241 | 1080 // Apply depth correction ONLY if CF#55 is not null: |
| 1081 if( sim_gas_delay > 0 ) | |
| 225 | 1082 { |
| 241 | 1083 sim_gas_delay += sim_dive_mins; |
| 1084 temp_depth_limit = switch_deco; | |
| 1085 return 1; | |
| 225 | 1086 } |
| 241 | 1087 |
| 1088 return 0; | |
| 217 | 1089 } |
| 1090 | |
| 241 | 1091 sim_gas_delay = 0; |
| 1092 return 0; | |
| 217 | 1093 } |
| 1094 | |
| 1095 ////////////////////////////////////////////////////////////////////////////// | |
| 1096 // Calculate gas switches | |
| 1097 // | |
| 1098 // | |
| 1099 // Input: N2_ratio, He_ratio. | |
| 1100 // sim_gas_last_used | |
| 1101 // | |
| 1102 // Output: calc_N2_ratio, calc_He_ratio | |
| 1103 // | |
| 241 | 1104 static void gas_switch_set(void) |
| 217 | 1105 { |
| 224 | 1106 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
| 217 | 1107 |
| 224 | 1108 if( sim_gas_last_used == 0 ) |
| 1109 { | |
| 1110 calc_N2_ratio = N2_ratio; | |
| 1111 calc_He_ratio = He_ratio; | |
| 1112 } | |
| 1113 else | |
| 1114 { | |
| 1115 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 1116 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 1117 } |
| 201 | 1118 |
| 1119 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 1120 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1121 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1122 } | |
| 1123 | |
| 1124 ////////////////////////////////////////////////////////////////////////////// | |
| 1125 // | |
| 212 | 1126 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 1127 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 276 | 1128 // float_deco_distance : security factor. |
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1129 // Water-vapor pressure inside limbs (ppWater). |
| 212 | 1130 // |
| 236 | 1131 // Output: ppN2, ppHe. |
| 212 | 1132 // |
| 1133 static void sim_alveolar_presures(void) | |
| 201 | 1134 { |
| 212 | 1135 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1136 | |
| 276 | 1137 // Take deco offset into account, but not at surface. |
| 1138 // Note: this should be done on ambiant pressure, hence before | |
| 1139 // computing the diluant partial pressure... | |
| 1140 if( deco_diluent > pres_surface ) | |
| 1141 deco_diluent += float_deco_distance; | |
| 1142 | |
| 212 | 1143 //---- CCR mode : deco gas switch ? -------------------------------------- |
| 276 | 1144 if( char_I_const_ppO2 != 0 ) |
| 201 | 1145 { |
| 276 | 1146 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
| 1147 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
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1148 // ppWater in the equations below: |
| 212 | 1149 if( temp_deco > deco_ppO2_change ) |
| 276 | 1150 deco_diluent -= const_ppO2; |
| 201 | 1151 else |
| 276 | 1152 deco_diluent -= deco_ppO2; |
| 1153 deco_diluent /= calc_N2_ratio + calc_He_ratio; | |
| 212 | 1154 |
| 1155 if (deco_diluent > temp_deco) | |
| 1156 deco_diluent = temp_deco; | |
| 201 | 1157 } |
| 1158 | |
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1159 if( deco_diluent > ppWater ) |
| 201 | 1160 { |
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1161 ppN2 = calc_N2_ratio * (deco_diluent - ppWater); |
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1162 ppHe = calc_He_ratio * (deco_diluent - ppWater); |
| 201 | 1163 } |
| 1164 else | |
| 1165 { | |
| 236 | 1166 ppN2 = 0.0; |
| 201 | 1167 ppHe = 0.0; |
| 1168 } | |
| 236 | 1169 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 1170 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 1171 } | |
| 1172 | |
| 1173 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1174 // clear_tissue |
| 1175 // | |
| 165 | 1176 // optimized in v.101 (var_N2_a) |
| 167 | 1177 // |
| 1178 // preload tissues with standard pressure for the given ambient pressure. | |
| 1179 // Note: fixed N2_ratio for standard air. | |
| 201 | 1180 // |
| 167 | 1181 static void clear_tissue(void) |
| 116 | 1182 { |
| 1183 flag_in_divemode = 0; | |
| 1184 int_O_DBS_bitfield = 0; | |
| 1185 int_O_DBS2_bitfield = 0; | |
| 1186 int_O_DBG_pre_bitfield = 0; | |
| 1187 int_O_DBG_post_bitfield = 0; | |
| 1188 char_O_NDL_at_20mtr = 255; | |
| 1189 | |
| 167 | 1190 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1191 N2_ratio = 0.7902; | |
| 212 | 1192 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1193 |
| 167 | 1194 for(ci=0; ci<16; ci++) |
| 126 | 1195 { |
| 197 | 1196 // cycle through the 16 Bühlmann tissues |
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1197 overlay float p = N2_ratio * (pres_respiration - ppWater); |
| 164 | 1198 pres_tissue[ci] = p; |
| 197 | 1199 |
| 1200 // cycle through the 16 Bühlmann tissues for Helium | |
| 167 | 1201 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1202 } // for 0 to 16 |
| 116 | 1203 |
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1204 clear_deco_table(); |
| 126 | 1205 char_O_deco_status = 0; |
| 1206 char_O_nullzeit = 0; | |
| 168 | 1207 int_O_ascenttime = 0; |
| 126 | 1208 char_O_gradient_factor = 0; |
| 1209 char_O_relative_gradient_GF = 0; | |
| 197 | 1210 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 258 | 1211 |
| 1212 calc_lead_tissue_limit = 0.0; | |
| 1213 char_O_gtissue_no = 0; | |
| 167 | 1214 } |
| 116 | 1215 |
| 167 | 1216 ////////////////////////////////////////////////////////////////////////////// |
| 1217 // calc_hauptroutine | |
| 1218 // | |
| 1219 // this is the major code in dive mode calculates: | |
| 116 | 1220 // the tissues, |
| 167 | 1221 // the bottom time, |
| 1222 // and simulates the ascend with all deco stops. | |
| 171 | 1223 // |
| 1224 // The deco_state sequence is : | |
| 1225 // 3 (at surface) | |
| 1226 // +---> 0 : calc nullzeit | |
| 1227 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1228 // | +-> 1 : simulate up to 16min of stops. | |
| 1229 // | +------< not finished | |
| 1230 // +--------< finish | |
| 1231 // | |
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1232 // Added steps 6,5 for @+5 calculation: |
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1233 // 6 = ascent to first stop (same as 2), except continue to 7 |
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1234 // 7 = same as 1, except loop to 7. |
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1235 // |
| 167 | 1236 static void calc_hauptroutine(void) |
| 116 | 1237 { |
| 241 | 1238 static unsigned char backup_gas_used = 0; |
| 1239 static unsigned char backup_gas_depth = 0; | |
| 217 | 1240 static unsigned char backup_gas_delay = 0; |
| 186 | 1241 |
| 116 | 1242 calc_hauptroutine_data_input(); |
| 1243 | |
| 1244 if(!flag_in_divemode) | |
| 1245 { | |
| 1246 flag_in_divemode = 1; | |
| 1247 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1248 } | |
| 1249 else | |
| 1250 check_pre_dbg(); | |
| 1251 | |
| 1252 calc_hauptroutine_update_tissues(); | |
| 1253 calc_gradient_factor(); | |
| 1254 | |
| 167 | 1255 // toggle between calculation for nullzeit (bottom time), |
| 1256 // deco stops | |
| 1257 // and more deco stops (continue) | |
| 1258 switch( char_O_deco_status ) | |
| 116 | 1259 { |
| 186 | 1260 case 3: //---- At surface: start a new dive ------------------------------ |
| 1261 clear_deco_table(); | |
| 1262 copy_deco_table(); | |
| 200 | 1263 int_O_ascenttime = 0; // Reset DTR. |
| 1264 char_O_nullzeit = 0; // Reset bottom time. | |
| 278 | 1265 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
| 201 | 1266 |
| 217 | 1267 // Values that should be reset just once for the full real dive. |
| 1268 // This is used to record the lowest stop for the whole dive, | |
| 1269 // Including ACCROSS all simulated ascent. | |
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1270 low_depth = 0.0; |
| 217 | 1271 |
| 1272 // Reset gas switch history. | |
| 241 | 1273 backup_gas_used = sim_gas_last_used = 0; |
| 1274 backup_gas_depth = sim_gas_last_depth = 0; | |
| 217 | 1275 backup_gas_delay = sim_gas_delay = 0; |
| 203 | 1276 sim_dive_mins = 0; |
| 1277 break; | |
| 186 | 1278 |
| 167 | 1279 case 0: //---- bottom time ----------------------------------------------- |
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1280 default: |
| 167 | 1281 calc_nullzeit(); |
| 1282 check_ndl(); | |
| 186 | 1283 char_O_deco_status = 2; // calc ascent next time. |
| 1284 break; | |
| 1285 | |
| 1286 case 2: //---- Simulate ascent to first stop ----------------------------- | |
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1287 case 6: // @+5min variation |
| 203 | 1288 // Check proposed gas at begin of ascent simulation |
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1289 sim_dive_mins = int_I_divemins; // Init current time. |
| 241 | 1290 |
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1291 gas_switch_find_current(); // Lookup for current gas & time. |
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1292 gas_switch_set(); // setup calc_ratio's |
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1293 |
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1294 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1295 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
| 203 | 1296 backup_gas_delay = sim_gas_delay; |
| 186 | 1297 |
| 1298 sim_ascent_to_first_stop(); | |
| 201 | 1299 |
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1300 // Calc stops next time (deco or gas switch). |
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1301 char_O_deco_status = 1 | ( char_O_deco_status & 4 ); |
| 167 | 1302 break; |
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1303 |
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1304 case 1: //---- Simulate stops -------------------------------------------- |
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1305 case 5: // @+5 variation. |
| 167 | 1306 calc_hauptroutine_calc_deco(); |
| 186 | 1307 |
| 1308 // If simulation is finished, restore the GF low reference, so that | |
| 1309 // next ascent simulation is done from the current depth: | |
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1310 if( (char_O_deco_status & 3) == 0 ) |
| 186 | 1311 { |
| 241 | 1312 sim_gas_last_used = backup_gas_used; |
| 1313 sim_gas_last_depth = backup_gas_depth; | |
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1314 sim_gas_delay = backup_gas_delay; |
| 186 | 1315 } |
| 167 | 1316 break; |
| 116 | 1317 } |
| 167 | 1318 |
| 116 | 1319 check_post_dbg(); |
| 1320 } | |
| 1321 | |
| 167 | 1322 ////////////////////////////////////////////////////////////////////////////// |
| 1323 // calc_hauptroutine_data_input | |
| 1324 // | |
| 1325 // Reset all C-code dive parameters from their ASM-code values. | |
| 1326 // Detect gas change condition. | |
| 1327 // | |
| 116 | 1328 void calc_hauptroutine_data_input(void) |
| 1329 { | |
| 203 | 1330 overlay short int_temp; |
| 126 | 1331 |
| 197 | 1332 pres_respiration = int_I_pres_respiration * 0.001; |
| 1333 pres_surface = int_I_pres_surface * 0.001; | |
| 1334 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1335 He_ratio = char_I_He_ratio * 0.01; | |
| 1336 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1337 |
| 126 | 1338 // ____________________________________________________ |
| 1339 // | |
| 1340 // _____________ G A S _ C H A N G E S ________________ | |
| 1341 // ____________________________________________________ | |
| 1342 | |
| 212 | 1343 // Keep a margin of 150mbar = 1.50m |
| 1344 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1345 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1346 |
| 225 | 1347 deco_gas_change[0] = 0; |
| 1348 deco_gas_change[1] = 0; | |
| 1349 deco_gas_change[2] = 0; | |
| 1350 deco_gas_change[3] = 0; | |
| 1351 deco_gas_change[4] = 0; | |
| 116 | 1352 |
| 203 | 1353 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1354 if(char_I_deco_gas_change[0]) |
| 126 | 1355 { |
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1356 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1357 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1358 } |
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1359 if(char_I_deco_gas_change[1]) |
| 126 | 1360 { |
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1361 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1362 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1363 } |
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1364 if(char_I_deco_gas_change[2]) |
| 126 | 1365 { |
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1366 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1367 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1368 } |
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1369 if(char_I_deco_gas_change[3]) |
| 126 | 1370 { |
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1371 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1372 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1373 } |
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1374 if(char_I_deco_gas_change[4]) |
| 126 | 1375 { |
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1376 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1377 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1378 } |
| 116 | 1379 |
| 197 | 1380 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 317 | 1381 deco_ppO2_change = char_I_deco_ppO2_change * METER_TO_BAR |
| 197 | 1382 + pres_surface |
| 1383 + float_deco_distance; | |
| 1384 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1385 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1386 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1387 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1388 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1389 GF_delta = GF_high - GF_low; |
| 116 | 1390 } |
| 1391 | |
| 167 | 1392 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1393 // |
| 1394 // | |
| 116 | 1395 void calc_hauptroutine_update_tissues(void) |
| 1396 { | |
| 197 | 1397 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1398 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1399 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1400 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1401 |
| 276 | 1402 pres_diluent = pres_respiration; |
| 307 | 1403 if( char_I_const_ppO2 != 0 ) // new in v.101 |
| 186 | 1404 { |
| 276 | 1405 pres_diluent -= const_ppO2; // new in v.101 |
| 1406 pres_diluent /= N2_ratio + He_ratio; // new in v.101 | |
| 1407 if( pres_diluent > pres_respiration ) // new in v.101 | |
| 1408 pres_diluent = pres_respiration; // new in v.101 | |
| 307 | 1409 |
| 1410 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0 + 0.5); | |
| 1411 char_O_diluent_ppO2 = (char)(pres_diluent * (1.0 - N2_ratio - He_ratio) * 100.0 + 0.5); | |
| 186 | 1412 } |
| 307 | 1413 |
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1414 if( pres_diluent > ppWater ) // new in v.101 |
| 116 | 1415 { |
| 307 | 1416 overlay float EAD, END; |
| 1417 | |
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1418 ppN2 = N2_ratio * (pres_diluent - ppWater); // changed in v.101 |
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1419 ppHe = He_ratio * (pres_diluent - ppWater); // changed in v.101 |
| 307 | 1420 |
| 1421 // EAD : Equivalent Air Dive. Equivalent depth for the same N2 level | |
| 1422 // with plain air. | |
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1423 // ppN2 = 79% * (P_EAD - ppWater) |
| 307 | 1424 // EAD = (P_EAD - Psurface) * 10 |
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1425 // ie: EAD = (ppN2 / 0.7902 + ppWater -Psurface) * 10 |
| 317 | 1426 EAD = (ppN2 / 0.7902 + ppWater - pres_surface) * BAR_TO_METER; |
| 307 | 1427 if( EAD < 0.0 || EAD > 245.5 ) EAD = 0.0; |
| 317 | 1428 char_O_EAD = (unsigned char)(EAD + 0.5); |
| 307 | 1429 |
| 1430 // END : Equivalent Narcotic Dive. | |
| 1431 // Here we count O2 as narcotic too. Hence everything but helium (has a narcosis factor of | |
| 1432 // 0.23 btw). Hence the formula becomes: | |
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1433 // END * BarPerMeter * (1.0 - 0.0) - ppWater + Psurface == Pambient - ppHe - ppWater |
| 317 | 1434 // ie: END = (Pambient - ppHe - Psurface) * BAR_TO_METER |
| 307 | 1435 // |
| 1436 // Source cited: | |
| 1437 // The Physiology and Medicine of Diving by Peter Bennett and David Elliott, | |
| 1438 // 4th edition, 1993, W.B.Saunders Company Ltd, London. | |
| 317 | 1439 END = (pres_respiration - ppHe - pres_surface) * BAR_TO_METER; |
| 307 | 1440 if( END < 0.0 || END > 245.5 ) END = 0.0; |
| 317 | 1441 char_O_END = (unsigned char)(END + 0.5); |
| 116 | 1442 } |
| 167 | 1443 else // new in v.101 |
| 116 | 1444 { |
| 236 | 1445 ppN2 = 0.0; // new in v.101 |
| 200 | 1446 ppHe = 0.0; // new in v.101 |
| 307 | 1447 char_O_EAD = char_O_END = 0; |
| 116 | 1448 } |
| 1449 | |
| 1450 if(!char_I_step_is_1min) | |
| 192 | 1451 calc_tissue(0); |
| 116 | 1452 else |
| 192 | 1453 calc_tissue(1); |
| 186 | 1454 |
| 192 | 1455 // Calc limit for surface, ie. GF_high. |
| 258 | 1456 calc_limit(); |
| 186 | 1457 |
| 203 | 1458 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 1459 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 192 | 1460 |
| 1461 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1462 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1463 { |
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1464 char_O_nullzeit = 0; // deco necessary |
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1465 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1466 } |
| 171 | 1467 } |
| 1468 | |
| 116 | 1469 |
| 167 | 1470 ////////////////////////////////////////////////////////////////////////////// |
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1471 // Compute stops. |
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1472 // |
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1473 // Note: because this can be very long, break on 16 iterations, and set state |
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1474 // to 0 when finished, or to 1 when needing to continue. |
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1475 // Note: because this might be very long (~ 66 ms by iteration in 1.84beta), |
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1476 // break the loop when total time > 512msec. |
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1477 // |
| 116 | 1478 void calc_hauptroutine_calc_deco(void) |
| 1479 { | |
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1480 overlay unsigned char loop; |
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1481 |
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1482 for(loop = 0; loop < 16; ++loop) |
| 116 | 1483 { |
|
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1484 // Limit loops to 512ms, using the RTC timer 3: |
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1485 if( tmr3() & (512*32) ) |
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1486 break; |
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1487 |
| 241 | 1488 // Do not ascent while doing a gas switch ? |
| 203 | 1489 if( sim_gas_delay <= sim_dive_mins ) |
| 1490 { | |
| 241 | 1491 if( calc_nextdecodepth() ) |
| 1492 { | |
| 1493 if( temp_depth_limit == 0 ) | |
| 1494 goto Surface; | |
| 116 | 1495 |
| 241 | 1496 //---- We hit a stop at temp_depth_limit --------------------- |
| 317 | 1497 temp_deco = temp_depth_limit * METER_TO_BAR // Convert to relative bar, |
| 241 | 1498 + pres_surface; // To absolute. |
| 1499 update_deco_table(); // Adds a one minute stops. | |
| 1500 } | |
| 1501 else | |
| 1502 { | |
| 1503 //---- No stop ----------------------------------------------- | |
| 317 | 1504 temp_deco -= (10*METER_TO_BAR); // Ascend 10m, no wait. |
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1505 |
| 241 | 1506 //---- Finish computations once surface is reached ----------- |
| 1507 if( temp_deco <= pres_surface ) | |
| 1508 { | |
| 1509 Surface: | |
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1510 if( char_O_deco_status == 1 ) // Don't in @+5min variant. |
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1511 copy_deco_table(); |
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1512 |
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1513 calc_ascenttime(); |
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1514 char_O_deco_status = 0; // calc nullzeit next time. |
| 278 | 1515 char_O_deco_last_stop = 0; // Surface reached. |
| 241 | 1516 return; |
| 1517 } | |
| 1518 } | |
| 212 | 1519 } |
| 1520 else | |
| 241 | 1521 update_deco_table(); // Just pass one minute. |
| 197 | 1522 |
| 241 | 1523 //---- Then update tissue -------------------------------------------- |
| 203 | 1524 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1525 gas_switch_set(); // Apply any simulated gas change, once validated. |
| 212 | 1526 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1527 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1528 } |
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1529 |
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1530 // Surface not reached, need more stops... |
| 278 | 1531 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
| 116 | 1532 } |
| 1533 | |
| 167 | 1534 ////////////////////////////////////////////////////////////////////////////// |
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1535 // Simulation ascention to first deco stop. |
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1536 // |
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1537 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1538 // there is no need to break on more that 16 iterations |
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1539 // (or we are already in deep shit). |
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1540 // |
|
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1541 // if char_O_deco_status indicate @+5 variant, add extra time at current depth, |
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1542 // before ascent. |
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1543 void sim_ascent_to_first_stop(void) |
| 116 | 1544 { |
| 171 | 1545 update_startvalues(); |
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1546 clear_deco_table(); |
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1547 |
| 200 | 1548 temp_deco = pres_respiration; // Starts from current real depth. |
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1549 |
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1550 // Are we doing the special @+5min variation ? |
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1551 if(char_O_deco_status & 4) |
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1552 sim_extra_time(); |
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1553 |
| 212 | 1554 // Do we have a gas switch going on ? |
| 1555 if( sim_gas_delay > sim_dive_mins ) | |
| 1556 return; | |
| 1557 | |
| 241 | 1558 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1559 for(;;) |
| 116 | 1560 { |
| 241 | 1561 // Try ascending 1 full minute. |
| 317 | 1562 temp_deco -= 10*METER_TO_BAR; // 1 min, at 10m/min. ~ 1bar. |
| 203 | 1563 |
| 212 | 1564 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1565 sim_limit(GF_low); | |
| 1566 | |
| 1567 // Did we reach deepest remaining stop ? | |
| 241 | 1568 if( temp_deco < sim_lead_tissue_limit ) |
| 212 | 1569 { |
| 317 | 1570 temp_deco += 10*METER_TO_BAR; // Restore last correct depth, |
| 1571 break; // End fast ascent. | |
| 212 | 1572 } |
| 1573 | |
| 203 | 1574 // Did we reach surface ? |
| 1575 if( temp_deco <= pres_surface ) | |
| 1576 { | |
| 1577 temp_deco = pres_surface; // Yes: finished ! | |
| 1578 break; | |
| 1579 } | |
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1580 |
| 241 | 1581 // Check for gas change below new depth ? |
| 317 | 1582 temp_depth_limit = (temp_deco - pres_surface) * BAR_TO_METER; |
| 241 | 1583 |
| 1584 if( gas_switch_deepest() ) | |
| 1585 { | |
| 317 | 1586 temp_deco = temp_depth_limit * METER_TO_BAR + pres_surface; |
| 212 | 1587 break; |
| 241 | 1588 } |
| 171 | 1589 |
| 203 | 1590 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1591 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
| 203 | 1592 sim_tissue(1); // and update tissues for 1 min. |
| 1593 } | |
| 167 | 1594 } |
| 116 | 1595 |
| 167 | 1596 ////////////////////////////////////////////////////////////////////////////// |
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1597 // Simulation extra time at the current depth. |
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1598 // |
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1599 // This routine is used for @+5min feature. |
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1600 void sim_extra_time(void) |
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1601 { |
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1602 overlay unsigned char extra = read_custom_function(58); |
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1603 do { |
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1604 sim_dive_mins++; // Advance simulated time by 1 minute. |
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1605 sim_tissue(1); // and update tissues for 1 min. |
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1606 } while( --extra != 0 ); |
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1607 } |
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1608 |
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1609 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 1610 // calc_tissue |
| 1611 // | |
| 116 | 1612 // optimized in v.101 |
| 167 | 1613 // |
| 184 | 1614 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1615 { |
| 251 | 1616 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1617 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1618 |
| 126 | 1619 for (ci=0;ci<16;ci++) |
| 1620 { | |
| 258 | 1621 read_buhlmann_times(period); // 2 sec or 1 min period. |
| 116 | 1622 |
| 126 | 1623 // N2 |
| 236 | 1624 temp_tissue = (ppN2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1625 temp_tissue_safety(); |
| 167 | 1626 pres_tissue[ci] += temp_tissue; |
| 165 | 1627 |
| 126 | 1628 // He |
| 200 | 1629 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1630 temp_tissue_safety(); |
| 167 | 1631 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1632 } |
| 167 | 1633 } |
| 116 | 1634 |
| 167 | 1635 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1636 // calc_limit |
| 167 | 1637 // |
| 192 | 1638 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1639 // |
| 258 | 1640 static void calc_limit(void) |
| 167 | 1641 { |
| 192 | 1642 char_O_gtissue_no = 255; |
| 1643 calc_lead_tissue_limit = 0.0; | |
| 1644 | |
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1645 for(ci=0; ci<16;ci++) |
| 192 | 1646 { |
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1647 overlay float N2 = pres_tissue[ci]; |
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1648 overlay float He = (pres_tissue+16)[ci]; |
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1649 overlay float p = N2 + He; |
| 192 | 1650 |
| 258 | 1651 read_buhlmann_coefficients(); |
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1652 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1653 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
| 116 | 1654 |
| 192 | 1655 // Apply the Eric Baker's varying gradient factor correction. |
| 1656 // Note: the correction factor depends both on GF and b, | |
| 1657 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1658 // so that can change who is the leading gas... | |
| 1659 // Note: Also depends of the GF. So the calcul is different for | |
| 1660 // GF_low, current GF, or GF_high... | |
| 1661 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1662 // hence what would happend at surface, | |
| 1663 // hence at GF_high. | |
| 1664 if( char_I_deco_model == 1 ) | |
| 258 | 1665 p = ( p - var_N2_a * GF_high) * var_N2_b |
| 1666 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
| 192 | 1667 else |
| 1668 p = (p - var_N2_a) * var_N2_b; | |
| 258 | 1669 if( p < 0.0 ) p = 0.0; |
| 192 | 1670 |
| 1671 if( p > calc_lead_tissue_limit ) | |
| 1672 { | |
| 1673 char_O_gtissue_no = ci; | |
| 1674 calc_lead_tissue_limit = p; | |
| 1675 } | |
| 1676 } | |
| 197 | 1677 |
| 1678 assert( char_O_gtissue_no < 16 ); | |
| 1679 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1680 } |
| 1681 | |
| 1682 ////////////////////////////////////////////////////////////////////////////// | |
| 1683 // calc_nullzeit | |
| 1684 // | |
| 1685 // calculates the remaining bottom time | |
| 1686 // | |
| 1687 // unchanged in v.101 | |
| 1688 // | |
| 1689 static void calc_nullzeit(void) | |
| 1690 { | |
| 203 | 1691 overlay unsigned char loop; |
| 200 | 1692 update_startvalues(); |
| 167 | 1693 |
| 116 | 1694 char_O_nullzeit = 0; |
| 167 | 1695 for(loop = 1; loop <= 17; loop++) |
| 116 | 1696 { |
| 1697 backup_sim_pres_tissue(); | |
| 197 | 1698 sim_tissue(2); // 10 min. |
| 192 | 1699 sim_limit(GF_high); |
| 167 | 1700 |
| 192 | 1701 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1702 { |
| 1703 restore_sim_pres_tissue(); | |
| 1704 break; | |
| 1705 } | |
| 1706 // Validate once we know its good. | |
| 1707 char_O_nullzeit += 10; | |
| 167 | 1708 } |
| 1709 | |
| 116 | 1710 if (char_O_nullzeit < 60) |
| 1711 { | |
| 167 | 1712 for(loop=1; loop <= 10; loop++) |
| 116 | 1713 { |
| 197 | 1714 sim_tissue(1); // 1 min |
| 192 | 1715 sim_limit(GF_high); |
| 1716 | |
| 1717 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1718 break; |
| 1719 char_O_nullzeit++; | |
| 167 | 1720 } |
| 185 | 1721 } |
| 1722 } | |
| 116 | 1723 |
| 167 | 1724 ////////////////////////////////////////////////////////////////////////////// |
| 1725 // backup_sim_pres_tissue | |
| 1726 // | |
| 116 | 1727 void backup_sim_pres_tissue(void) |
| 1728 { | |
| 167 | 1729 overlay unsigned char x; |
| 1730 | |
| 1731 for(x = 0; x<32; x++) | |
| 126 | 1732 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1733 } |
| 116 | 1734 |
| 167 | 1735 ////////////////////////////////////////////////////////////////////////////// |
| 1736 // restore_sim_pres_tissue | |
| 1737 // | |
| 116 | 1738 void restore_sim_pres_tissue(void) |
| 1739 { | |
| 167 | 1740 overlay unsigned char x; |
| 1741 | |
| 1742 for(x = 0; x<32; x++) | |
| 126 | 1743 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1744 } |
| 116 | 1745 |
| 167 | 1746 ////////////////////////////////////////////////////////////////////////////// |
| 1747 // calc_ascenttime | |
| 1748 // | |
|
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1749 // Summup ascent from bottom to surface, at 1 bar/min, 1min for last 3 meters, |
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1750 // and all stops. |
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1751 // |
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1752 // Result in int_O_ascenttime, or int_O_extra_ascenttime if in @+5min variant. |
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1753 static void calc_ascenttime(void) |
| 116 | 1754 { |
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1755 if( pres_respiration > pres_surface ) |
| 126 | 1756 { |
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1757 overlay unsigned char x; |
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1758 overlay unsigned short sum; |
| 168 | 1759 |
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1760 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
| 192 | 1761 overlay float ascent = pres_respiration - pres_surface + 0.7; |
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1762 if (ascent < 0.0) |
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1763 ascent = 0.0; |
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1764 sum = (unsigned short)(ascent + 0.99); |
| 168 | 1765 |
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1766 for(x=0; x<32 && internal_deco_depth[x]; x++) |
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1767 sum += (unsigned short)internal_deco_time[x]; |
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1768 |
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1769 if( char_O_deco_status == 1 ) |
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1770 int_O_ascenttime = sum; |
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1771 else |
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1772 int_O_extra_ascenttime = sum; |
| 126 | 1773 } |
| 1774 else | |
| 168 | 1775 int_O_ascenttime = 0; |
| 167 | 1776 } |
| 116 | 1777 |
| 167 | 1778 ////////////////////////////////////////////////////////////////////////////// |
| 1779 // update_startvalues | |
| 1780 // | |
| 116 | 1781 // updated in v.102 |
| 167 | 1782 // |
| 116 | 1783 void update_startvalues(void) |
| 1784 { | |
| 167 | 1785 overlay unsigned char x; |
| 116 | 1786 |
| 201 | 1787 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1788 for (x = 0;x<16;x++) |
| 1789 { | |
| 1790 sim_pres_tissue[x] = pres_tissue[x]; | |
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1791 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1792 } |
| 197 | 1793 |
| 201 | 1794 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1795 sim_lead_tissue_limit = 0.0; |
| 1796 sim_lead_tissue_no = 255; | |
| 167 | 1797 } |
| 116 | 1798 |
| 167 | 1799 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1800 // sim_tissue |
| 167 | 1801 // |
| 116 | 1802 // optimized in v.101 |
| 167 | 1803 // |
| 1804 // Function very simular to calc_tissue, but: | |
| 1805 // + Use a 1min or 10min period. | |
| 1806 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1807 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1808 { |
| 251 | 1809 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1810 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1811 |
| 192 | 1812 for(ci=0; ci<16; ci++) |
| 126 | 1813 { |
| 258 | 1814 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
| 165 | 1815 |
| 126 | 1816 // N2 |
| 236 | 1817 temp_tissue = (ppN2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1818 temp_tissue_safety(); |
| 167 | 1819 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1820 |
| 1821 // He | |
| 200 | 1822 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1823 temp_tissue_safety(); |
| 167 | 1824 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1825 } |
| 167 | 1826 } |
| 116 | 1827 |
| 167 | 1828 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1829 // sim_limit() |
| 1830 // | |
| 1831 // New in v.111 | |
| 1832 // | |
| 1833 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1834 // different depth, because it depends on current gradient factor. | |
| 167 | 1835 // |
| 192 | 1836 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1837 { |
| 212 | 1838 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1839 | |
| 192 | 1840 sim_lead_tissue_limit = 0.0; |
| 212 | 1841 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1842 |
| 1843 for(ci=0; ci<16; ci++) | |
| 1844 { | |
| 241 | 1845 overlay float N2 = sim_pres_tissue[ci]; |
| 1846 overlay float He = (sim_pres_tissue+16)[ci]; | |
| 1847 overlay float p = N2 + He; | |
| 192 | 1848 |
| 258 | 1849 read_buhlmann_coefficients(); |
| 241 | 1850 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
| 1851 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 192 | 1852 |
| 1853 // Apply the Eric Baker's varying gradient factor correction. | |
| 1854 // Note: the correction factor depends both on GF and b, | |
| 1855 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1856 // so that can change who is the leading gas... | |
| 1857 // Note: Also depends of the GF_current... | |
| 1858 if( char_I_deco_model == 1 ) | |
| 302 | 1859 p = ( p - var_N2_a * GF_current) |
| 1860 / (GF_current / var_N2_b + 1.0 - GF_current); | |
| 192 | 1861 else |
| 1862 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1863 if( p < 0.0 ) p = 0.0; |
| 192 | 1864 |
| 1865 if( p > sim_lead_tissue_limit ) | |
| 1866 { | |
| 1867 sim_lead_tissue_no = ci; | |
| 1868 sim_lead_tissue_limit = p; | |
| 1869 } | |
| 1870 } // for ci | |
| 197 | 1871 |
| 1872 assert( sim_lead_tissue_no < 16 ); | |
| 237 | 1873 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1874 } |
| 116 | 1875 |
| 167 | 1876 ////////////////////////////////////////////////////////////////////////////// |
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1877 // clear_deco_table |
| 167 | 1878 // |
| 1879 // unchanged in v.101 | |
| 1880 // | |
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1881 static void clear_deco_table(void) |
| 116 | 1882 { |
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1883 overlay unsigned char x; |
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1884 |
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1885 for(x=0; x<32; ++x) |
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1886 { |
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1887 internal_deco_time [x] = 0; |
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1888 internal_deco_depth[x] = 0; |
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1889 } |
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1890 } |
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1891 |
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1892 ////////////////////////////////////////////////////////////////////////////// |
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1893 // update_deco_table |
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1894 // |
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1895 // Add 1 min to current stop. |
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1896 // |
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1897 // Inputs: |
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1898 // temp_depth_limit = stop's depth, in meters. |
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1899 // In/Out: |
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1900 // internal_deco_depth[] : depth (in metres) of each stops. |
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1901 // internal_deco_time [] : time (in minutes) of each stops. |
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1902 // |
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1903 static void update_deco_table() |
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1904 { |
| 192 | 1905 overlay unsigned char x; |
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1906 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1907 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1908 |
| 192 | 1909 for(x=0; x<32; ++x) |
| 1910 { | |
| 212 | 1911 // Make sure deco-stops are recorded in order: |
| 1912 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
| 1913 | |
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1914 if( (internal_deco_depth[x] & 0x7F) == temp_depth_limit ) |
| 192 | 1915 { |
| 1916 // Do not overflow (max 255') | |
| 1917 if( internal_deco_time[x] < 255 ) | |
| 1918 { | |
| 1919 internal_deco_time[x]++; | |
| 1920 return; | |
| 1921 } | |
| 1922 // But store extra in the next stop... | |
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1923 } |
| 192 | 1924 |
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1925 if( internal_deco_depth[x] == 0 ) |
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1926 { |
| 192 | 1927 internal_deco_depth[x] = temp_depth_limit; |
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1928 if( sim_gas_delay > sim_dive_mins ) |
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1929 internal_deco_depth[x] |= 0x80; |
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1930 |
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1931 internal_deco_time[x] = 1; |
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1932 return; |
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1933 } |
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1934 } |
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1935 |
| 192 | 1936 // Can't store stops at more than 96m. |
| 1937 // Or stops at less that 3m too. | |
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1938 // Just do nothing with that... |
| 167 | 1939 } |
| 116 | 1940 |
| 167 | 1941 ////////////////////////////////////////////////////////////////////////////// |
| 1942 // calc_gradient_factor | |
| 1943 // | |
| 165 | 1944 // optimized in v.101 (var_N2_a) |
| 116 | 1945 // new code in v.102 |
| 167 | 1946 // |
| 1947 static void calc_gradient_factor(void) | |
| 116 | 1948 { |
| 197 | 1949 overlay float gf; |
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1950 overlay float N2 = pres_tissue[char_O_gtissue_no]; |
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1951 overlay float He = (pres_tissue+16)[char_O_gtissue_no]; |
| 237 | 1952 |
| 197 | 1953 assert( char_O_gtissue_no < 16 ); |
| 237 | 1954 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1955 |
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1956 // tissue > respiration (currently off-gasing) |
| 302 | 1957 // GF = 0% when respiration == tissue, ie. bubbles are at equilibrium. |
| 1958 // GF = 100% when respiration == limit. | |
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1959 temp_tissue = N2 + He; |
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1960 if( temp_tissue <= pres_respiration ) |
| 197 | 1961 gf = 0.0; |
| 1962 else | |
| 1963 { | |
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1964 overlay float limit = calc_lead_tissue_limit; |
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1965 // NOTE: in GF model, calc_lead_tissue_limit include already the |
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1966 // correction due to gradient factor. To compute the actual |
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1967 // current GF, we need to (re-)compute the raw ambiant-pressure |
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1968 // limit from the Bühlmann model. |
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1969 if( char_I_deco_model == 1 ) |
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1970 { |
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1971 ci = char_O_gtissue_no; |
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1972 read_buhlmann_coefficients(); |
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1973 var_N2_a = (var_N2_a * N2 + var_He_a * He) / temp_tissue; |
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1974 var_N2_b = (var_N2_b * N2 + var_He_b * He) / temp_tissue; |
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1975 limit = (temp_tissue - var_N2_a) * var_N2_b; |
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1976 } |
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1977 |
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1978 gf = (temp_tissue - pres_respiration) |
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1979 / (temp_tissue - limit) |
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1980 * 100.0; |
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1981 if( gf > 254.5 ) gf = 255.0; |
| 197 | 1982 if( gf < 0.0 ) gf = 0.0; |
| 1983 } | |
|
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1984 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
| 116 | 1985 |
| 1986 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1987 { | |
| 197 | 1988 overlay float rgf; |
| 1989 | |
|
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1990 if( low_depth < 1.5 ) |
| 197 | 1991 rgf = GF_high; |
| 1992 else | |
| 1993 { | |
| 317 | 1994 overlay float temp1 = low_depth * METER_TO_BAR; |
| 197 | 1995 overlay float temp2 = pres_respiration - pres_surface; |
| 186 | 1996 |
| 197 | 1997 if (temp2 <= 0) |
| 1998 rgf = GF_high; | |
| 1999 else if (temp2 >= temp1) | |
| 2000 rgf = GF_low; | |
| 2001 else | |
| 2002 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 2003 } | |
| 186 | 2004 |
| 197 | 2005 rgf = gf / rgf; // gf is already in percent |
| 2006 if( rgf < 0.0 ) rgf = 0.0; | |
|
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2007 if( rgf > 254.5 ) rgf = 255.0; |
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2008 char_O_relative_gradient_GF = (unsigned char)(rgf+0.5f); |
| 116 | 2009 } // calc relative gradient factor |
| 2010 else | |
| 2011 { | |
| 186 | 2012 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 2013 } |
| 167 | 2014 } |
| 116 | 2015 |
| 167 | 2016 ////////////////////////////////////////////////////////////////////////////// |
| 2017 // deco_calc_desaturation_time | |
| 2018 // | |
| 116 | 2019 // FIXED N2_ratio |
| 2020 // unchanged in v.101 | |
|
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2021 // Inputs: int_I_pres_surface, ppWater, char_I_desaturation_multiplier |
| 233 | 2022 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] |
| 167 | 2023 // |
| 116 | 2024 void deco_calc_desaturation_time(void) |
| 2025 { | |
|
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2026 RESET_C_STACK |
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2027 |
| 233 | 2028 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2029 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2030 | |
|
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2031 #ifndef CROSS_COMPILE |
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2032 // Note: we don't use far rom pointer, because the |
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2033 // 24 bits is to complex, hence we have to set |
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2034 // the UPPER page ourself... |
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2035 // --> Set zero if tables are moved to lower pages ! |
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2036 _asm |
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2037 movlw 1 |
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2038 movwf TBLPTRU,0 |
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2039 _endasm |
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2040 #endif |
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2041 |
| 237 | 2042 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 2043 pres_surface = int_I_pres_surface * 0.001; |
|
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2044 ppN2 = N2_ratio * (pres_surface - ppWater); |
| 126 | 2045 int_O_desaturation_time = 0; |
| 2046 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 233 | 2047 |
| 126 | 2048 for (ci=0;ci<16;ci++) |
| 2049 { | |
| 251 | 2050 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 2051 overlay float temp1; | |
| 2052 overlay float temp2; | |
| 2053 overlay float temp3; | |
| 2054 overlay float temp4; | |
| 2055 | |
| 126 | 2056 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 2057 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 2058 // 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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2059 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
| 126 | 2060 // N2 |
|
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2061 temp1 = 1.05 * ppN2 - pres_tissue[ci]; |
| 236 | 2062 temp2 = ppN2 - pres_tissue[ci]; |
| 126 | 2063 if (temp2 >= 0.0) |
| 2064 { | |
| 233 | 2065 temp1 = 0.0; |
| 2066 temp2 = 0.0; | |
| 126 | 2067 } |
| 2068 else | |
| 2069 temp1 = temp1 / temp2; | |
| 251 | 2070 if( 0.0 < temp1 && temp1 < 1.0 ) |
| 126 | 2071 { |
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2072 overlay float var_N2_halftime = buhlmann_ht[ci]; |
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2073 assert( 4.0 <= var_N2_halftime && var_N2_halftime <= 635.0 ); |
| 252 | 2074 |
|
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2075 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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2076 // minus because log is negative. |
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2077 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
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2078 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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2079 |
| 126 | 2080 } |
| 2081 else | |
| 2082 { | |
| 233 | 2083 temp1 = 0.0; |
| 2084 temp2 = 0.0; | |
| 126 | 2085 } |
| 116 | 2086 |
| 126 | 2087 // He |
| 167 | 2088 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 2089 if (temp3 >= 0.0) |
| 2090 { | |
| 233 | 2091 temp3 = 0.0; |
| 2092 temp4 = 0.0; | |
| 126 | 2093 } |
| 2094 else | |
|
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2095 temp3 = - temp3 / (pres_tissue+16)[ci]; |
| 251 | 2096 if( 0.0 < temp3 && temp3 < 1.0 ) |
| 126 | 2097 { |
|
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2098 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; |
| 261 | 2099 assert( 1.51 <= var_He_halftime && var_He_halftime <= 240.03 ); |
|
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2100 |
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2101 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
| 126 | 2102 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
| 2103 // minus because log is negative | |
| 165 | 2104 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 2105 } |
| 2106 else | |
| 2107 { | |
| 233 | 2108 temp3 = 0.0; |
| 2109 temp4 = 0.0; | |
| 126 | 2110 } |
| 116 | 2111 |
| 126 | 2112 // saturation_time (for flight) |
| 2113 if (temp4 > temp2) | |
| 203 | 2114 desat_time = (unsigned short)temp4; |
| 126 | 2115 else |
| 203 | 2116 desat_time = (unsigned short)temp2; |
| 252 | 2117 |
| 251 | 2118 if(desat_time > int_O_desaturation_time) |
| 2119 int_O_desaturation_time = desat_time; | |
| 116 | 2120 |
| 126 | 2121 // N2 saturation in multiples of halftime for display purposes |
| 2122 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 2123 temp2 = temp2 + 80.0; // set center | |
| 2124 if (temp2 < 0.0) | |
| 2125 temp2 = 0.0; | |
| 2126 if (temp2 > 255.0) | |
| 2127 temp2 = 255.0; | |
| 2128 char_O_tissue_saturation[ci] = (char)temp2; | |
| 233 | 2129 |
| 126 | 2130 // He saturation in multiples of halftime for display purposes |
| 2131 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 2132 temp4 = temp4 + 80.0; // set center | |
| 2133 if (temp4 < 0.0) | |
| 2134 temp4 = 0.0; | |
| 2135 if (temp4 > 255.0) | |
| 2136 temp4 = 255.0; | |
| 167 | 2137 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 2138 } // for |
| 167 | 2139 } |
| 116 | 2140 |
| 167 | 2141 ////////////////////////////////////////////////////////////////////////////// |
| 2142 // calc_wo_deco_step_1_min | |
| 2143 // | |
| 116 | 2144 // FIXED N2 Ratio |
| 2145 // optimized in v.101 (...saturation_multiplier) | |
| 2146 // desaturation slowed down to 70,42% | |
| 167 | 2147 // |
| 2148 static void calc_wo_deco_step_1_min(void) | |
| 116 | 2149 { |
| 251 | 2150 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2151 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
| 2152 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
| 2153 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2154 | |
| 116 | 2155 if(flag_in_divemode) |
| 2156 { | |
| 2157 flag_in_divemode = 0; | |
| 2158 set_dbg_end_of_dive(); | |
| 2159 } | |
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2160 |
| 126 | 2161 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 233 | 2162 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
| 2163 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
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2164 ppN2 = N2_ratio * (pres_respiration - ppWater); // ppWater is the extra pressure in the body |
| 200 | 2165 ppHe = 0.0; |
| 126 | 2166 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 2167 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 2168 |
| 192 | 2169 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 2170 |
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2171 clear_deco_table(); |
| 200 | 2172 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 2173 char_O_nullzeit = 0; |
| 168 | 2174 int_O_ascenttime = 0; |
| 126 | 2175 calc_gradient_factor(); |
| 167 | 2176 } |
| 126 | 2177 |
| 167 | 2178 ////////////////////////////////////////////////////////////////////////////// |
| 2179 ////////////////////////////////////////////////////////////////////////////// | |
| 2180 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 2181 ////////////////////////////////////////////////////////////////////////////// | |
| 2182 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 2183 |
| 184 | 2184 #ifndef CROSS_COMPILE |
| 116 | 2185 void deco_hash(void) |
| 2186 { | |
| 167 | 2187 overlay unsigned char md_i, md_j; // Loop index. |
| 2188 overlay unsigned char md_t; | |
| 2189 overlay unsigned char md_buffer[16]; | |
| 2190 overlay unsigned char md_temp; | |
| 203 | 2191 overlay unsigned short md_pointer; |
| 167 | 2192 |
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2193 RESET_C_STACK |
| 126 | 2194 |
| 2195 // init | |
| 164 | 2196 for(md_i=0;md_i<16;md_i++) |
| 126 | 2197 { |
| 2198 md_state[md_i] = 0; | |
| 164 | 2199 char_O_hash[md_i] = 0; |
| 126 | 2200 } // for md_i 16 |
| 116 | 2201 |
| 126 | 2202 _asm |
| 167 | 2203 movlw 0x01 // md_pi address. |
| 2204 movwf TBLPTRU,0 | |
| 2205 movlw 0x7E | |
| 2206 movwf TBLPTRH,0 | |
| 2207 movlw 0x00 | |
| 2208 movwf TBLPTRL,0 | |
| 126 | 2209 _endasm; |
| 165 | 2210 md_i = 0; |
| 2211 do { | |
| 126 | 2212 _asm |
| 2213 TBLRDPOSTINC | |
| 2214 movff TABLAT,md_temp | |
| 2215 _endasm | |
| 165 | 2216 md_pi_subst[md_i++] = md_temp; |
| 2217 } while( md_i != 0 ); | |
| 2218 | |
| 126 | 2219 _asm |
| 167 | 2220 movlw 0x00 |
| 2221 movwf TBLPTRU,0 | |
| 2222 movlw 0x00 | |
| 2223 movwf TBLPTRH,0 | |
| 2224 movlw 0x00 | |
| 2225 movwf TBLPTRL,0 | |
| 126 | 2226 _endasm |
| 167 | 2227 |
| 126 | 2228 // cycle buffers |
| 2229 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 2230 { | |
| 2231 md_t = 0; | |
| 2232 for (md_i=0;md_i<16;md_i++) | |
| 2233 { | |
| 2234 if(md_pointer == 9) | |
| 164 | 2235 md_temp = char_O_hash[md_i]; |
| 126 | 2236 else |
| 2237 { | |
| 2238 _asm | |
| 167 | 2239 TBLRDPOSTINC |
| 2240 movff TABLAT,md_temp | |
| 126 | 2241 _endasm |
| 2242 } // else | |
| 167 | 2243 |
| 2244 md_buffer[md_i] = md_temp; | |
| 186 | 2245 md_state[md_i+16] = md_temp; |
| 2246 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2247 } // for md_i 16 |
| 2248 | |
| 2249 for (md_i=0;md_i<18;md_i++) | |
| 2250 { | |
| 2251 for (md_j=0;md_j<48;md_j++) | |
| 2252 { | |
| 167 | 2253 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2254 md_t = md_state[md_j]; |
| 2255 } // for md_j 48 | |
| 2256 md_t = (unsigned char)(md_t+1); | |
| 2257 } // for md_i 18 | |
| 164 | 2258 md_t = char_O_hash[15]; |
| 126 | 2259 |
| 2260 for (md_i=0;md_i<16;md_i++) | |
| 2261 { | |
| 167 | 2262 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2263 md_t = char_O_hash[md_i]; |
| 126 | 2264 } // for md_i 16 |
| 2265 } // for md_pointer | |
| 116 | 2266 } // void deco_hash(void) |
| 184 | 2267 #endif |
| 116 | 2268 |
| 167 | 2269 ////////////////////////////////////////////////////////////////////////////// |
| 2270 // deco_clear_CNS_fraction | |
| 2271 // | |
| 116 | 2272 // new in v.101 |
| 167 | 2273 // |
| 116 | 2274 void deco_clear_CNS_fraction(void) |
| 2275 { | |
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2276 RESET_C_STACK |
| 237 | 2277 |
| 126 | 2278 CNS_fraction = 0.0; |
| 2279 char_O_CNS_fraction = 0; | |
| 167 | 2280 } |
| 116 | 2281 |
| 167 | 2282 ////////////////////////////////////////////////////////////////////////////// |
| 2283 // deco_calc_CNS_fraction | |
| 2284 // | |
| 116 | 2285 // new in v.101 |
| 2286 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 2287 // |
| 116 | 2288 // Input: char_I_actual_ppO2 |
| 292 | 2289 // char_I_step_is_1min : use 1min steps instead of 2sec. |
| 116 | 2290 // Output: char_O_CNS_fraction |
| 2291 // Uses and Updates: CNS_fraction | |
| 2292 // Uses: acutal_ppO2 | |
| 167 | 2293 // |
| 116 | 2294 void deco_calc_CNS_fraction(void) |
| 2295 { | |
| 167 | 2296 overlay float actual_ppO2; |
| 292 | 2297 overlay float time_factor = 1.0f; |
| 126 | 2298 RESET_C_STACK |
| 167 | 2299 |
| 237 | 2300 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); |
| 2301 assert( char_I_actual_ppO2 > 15 ); | |
| 2302 | |
| 126 | 2303 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 292 | 2304 if( char_I_step_is_1min ) |
| 2305 time_factor = 30.0f; | |
| 116 | 2306 |
| 126 | 2307 if (char_I_actual_ppO2 < 50) |
| 292 | 2308 ; // no changes |
| 126 | 2309 else if (char_I_actual_ppO2 < 60) |
| 292 | 2310 CNS_fraction += time_factor/(-54000.0 * actual_ppO2 + 54000.0); |
| 126 | 2311 else if (char_I_actual_ppO2 < 70) |
| 292 | 2312 CNS_fraction += time_factor/(-45000.0 * actual_ppO2 + 48600.0); |
| 126 | 2313 else if (char_I_actual_ppO2 < 80) |
| 292 | 2314 CNS_fraction += time_factor/(-36000.0 * actual_ppO2 + 42300.0); |
| 126 | 2315 else if (char_I_actual_ppO2 < 90) |
| 292 | 2316 CNS_fraction += time_factor/(-27000.0 * actual_ppO2 + 35100.0); |
| 126 | 2317 else if (char_I_actual_ppO2 < 110) |
| 292 | 2318 CNS_fraction += time_factor/(-18000.0 * actual_ppO2 + 27000.0); |
| 126 | 2319 else if (char_I_actual_ppO2 < 150) |
| 292 | 2320 CNS_fraction += time_factor/(-9000.0 * actual_ppO2 + 17100.0); |
| 126 | 2321 else if (char_I_actual_ppO2 < 160) |
| 292 | 2322 CNS_fraction += time_factor/(-22500.0 * actual_ppO2 + 37350.0); |
| 126 | 2323 else if (char_I_actual_ppO2 < 165) |
| 292 | 2324 CNS_fraction += time_factor*0.000755; // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity... Formula (A1) based on value for 1.55 and c=20 |
| 126 | 2325 else if (char_I_actual_ppO2 < 170) |
| 292 | 2326 CNS_fraction += time_factor*0.00102; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 |
| 126 | 2327 else if (char_I_actual_ppO2 < 175) |
| 292 | 2328 CNS_fraction += time_factor*0.00136; |
| 126 | 2329 else if (char_I_actual_ppO2 < 180) |
| 292 | 2330 CNS_fraction += time_factor*0.00180; |
| 126 | 2331 else if (char_I_actual_ppO2 < 185) |
| 292 | 2332 CNS_fraction += time_factor*0.00237; |
| 126 | 2333 else if (char_I_actual_ppO2 < 190) |
| 292 | 2334 CNS_fraction += time_factor*0.00310; |
| 126 | 2335 else if (char_I_actual_ppO2 < 195) |
| 292 | 2336 CNS_fraction += time_factor*0.00401; |
| 126 | 2337 else if (char_I_actual_ppO2 < 200) |
| 292 | 2338 CNS_fraction += time_factor*0.00517; |
| 126 | 2339 else if (char_I_actual_ppO2 < 230) |
| 292 | 2340 CNS_fraction += time_factor*0.0209; |
| 126 | 2341 else |
| 292 | 2342 CNS_fraction += time_factor*0.0482; // value for 2.5 |
| 116 | 2343 |
| 126 | 2344 if (CNS_fraction > 2.5) |
| 2345 CNS_fraction = 2.5; | |
| 2346 if (CNS_fraction < 0.0) | |
| 2347 CNS_fraction = 0.0; | |
| 2348 | |
| 2349 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2350 } |
| 116 | 2351 |
| 167 | 2352 ////////////////////////////////////////////////////////////////////////////// |
| 2353 // deco_calc_CNS_decrease_15min | |
| 2354 // | |
| 116 | 2355 // new in v.101 |
| 167 | 2356 // |
| 116 | 2357 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2358 // (Used in sleepmode, for low battery mode). |
| 167 | 2359 // |
| 116 | 2360 // Output: char_O_CNS_fraction |
| 2361 // Uses and Updates: CNS_fraction | |
| 167 | 2362 // |
| 116 | 2363 void deco_calc_CNS_decrease_15min(void) |
| 2364 { | |
| 237 | 2365 RESET_C_STACK |
| 2366 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
| 2367 | |
| 126 | 2368 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2369 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2370 } | |
| 116 | 2371 |
| 167 | 2372 ////////////////////////////////////////////////////////////////////////////// |
| 2373 // deco_calc_percentage | |
| 2374 // | |
| 116 | 2375 // new in v.101 |
| 167 | 2376 // |
| 116 | 2377 // calculates int_I_temp * char_I_temp / 100 |
| 2378 // output is int_I_temp | |
| 200 | 2379 // |
| 2380 // Used to compute NoFly remaining time. | |
|
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2381 // |
| 116 | 2382 void deco_calc_percentage(void) |
| 2383 { | |
|
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2384 RESET_C_STACK |
|
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2385 |
| 237 | 2386 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 2387 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
| 2388 | |
|
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2389 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2390 |
| 302 | 2391 assert( int_I_temp < 2880 ); // Less than 48h... |
|
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2392 } |
|
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2393 |
|
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2394 |
|
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2395 ////////////////////////////////////////////////////////////////////////////// |
|
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2396 // deco_gas_volumes |
|
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2397 // |
|
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2398 // new in v.111 |
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2399 // |
|
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2400 // calculates volumes for each gas. |
|
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2401 // |
|
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2402 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
d995e220ddac
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2403 // Gas list. |
|
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2404 // char_I_first_gas is the bottom gas. |
|
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2405 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
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2406 // CF#54 == TRUE if shallowest stop first. |
|
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2407 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) or bar/min. |
|
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2408 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0) or bar/min. |
| 224 | 2409 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
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2410 // |
|
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2411 void deco_gas_volumes(void) |
|
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2412 { |
|
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2413 overlay float volumes[5]; |
| 265 | 2414 overlay float bottom_usage, ascent_usage; |
|
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2415 overlay unsigned char i, deepest_first; |
| 241 | 2416 overlay unsigned char gas; |
|
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2417 RESET_C_STACK |
|
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2418 |
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2419 //---- initialize with bottom consumption -------------------------------- |
|
240
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2420 for(i=0; i<5; ++i) // Nothing yet... |
|
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2421 volumes[i] = 0.0; |
|
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2422 |
| 241 | 2423 assert(1 <= char_I_first_gas && char_I_first_gas <= 5); |
| 2424 gas = char_I_first_gas - 1; | |
| 2425 | |
| 265 | 2426 bottom_usage = read_custom_function(56) * 0.1; |
| 2427 if( bottom_usage > 0.0 ) | |
| 2428 volumes[gas] | |
| 2429 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
| 2430 * char_I_bottom_time // in minutes. | |
| 2431 * bottom_usage; // In liter/minutes. | |
| 2432 else | |
| 2433 volumes[gas] = 65535.0; | |
|
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2434 |
|
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2435 //---- Ascent usage ------------------------------------------------------ |
|
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2436 |
|
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2437 deepest_first = read_custom_function(54) == 0; |
|
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2438 ascent_usage = read_custom_function(57) * 0.1; // In liter/minutes. |
|
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2439 |
| 224 | 2440 // Usage up to the first stop: |
| 2441 // - computed at MAX depth (easier, safer), | |
|
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2442 // - with an ascent speed of 10m/min. |
| 224 | 2443 // - with ascent litter / minutes. |
|
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2444 // - still using bottom gas: |
| 265 | 2445 if( ascent_usage > 0.0 ) |
| 2446 volumes[gas] | |
| 2447 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar | |
| 2448 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) | |
| 2449 * ascent_usage; // Consumption ( xxx / min @ 1 bar) | |
| 2450 else | |
| 2451 volumes[gas] = 65535.0; | |
|
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2452 |
|
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2453 for(i=0; i<32; ++i) |
|
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2454 { |
| 241 | 2455 overlay unsigned char j; |
|
234
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2456 overlay unsigned char depth, time, ascent; |
|
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2457 |
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2458 // Manage stops in reverse order (CF#54) |
|
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2459 if( deepest_first ) |
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2460 { |
| 241 | 2461 time = char_O_deco_time[i]; |
|
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2462 if( time == 0 ) break; // End of table: done. |
|
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2463 |
|
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2464 ascent = depth = char_O_deco_depth[i] & 0x7F; |
|
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2465 if( i < 31 ) |
|
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|
2466 ascent -= char_O_deco_depth[i+1] & 0x7F; |
|
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2467 } |
|
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2468 else |
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2469 { |
|
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2470 time = char_O_deco_time[31-i]; |
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2471 if( time == 0 ) continue; // not yet: still searh table. |
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2472 |
|
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2473 ascent = depth = char_O_deco_depth[31-i] & 0x7F; |
|
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2474 if( i < 31 ) |
|
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|
2475 ascent -= char_O_deco_depth[30-i] & 0x7F; |
|
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2476 } |
|
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2477 |
|
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2478 // Gas switch depth ? |
| 241 | 2479 for(j=0; j<5; ++j) |
|
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2480 { |
|
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2481 if( depth <= char_I_deco_gas_change[j] ) |
| 241 | 2482 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 224 | 2483 gas = j; |
|
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2484 } |
|
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|
2485 |
|
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|
2486 // usage during stop: |
| 224 | 2487 // Note: because first gas is not in there, increment gas+1 |
| 265 | 2488 if( ascent_usage > 0.0 ) |
| 2489 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. | |
| 2490 * time // in minutes. | |
| 2491 * ascent_usage // in xxx / min @ 1bar. | |
| 2492 // Plus usage during ascent to the next stop, at 10m/min. | |
| 2493 + (depth*0.1 + 1.0) | |
|
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2494 * ascent*0.1 // metre --> min |
| 265 | 2495 * ascent_usage; |
| 2496 else | |
| 2497 volumes[gas] = 65535.0; | |
|
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|
2498 } |
|
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|
2499 |
|
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|
2500 //---- convert results for the ASM interface ----------------------------- |
|
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|
2501 for(i=0; i<5; ++i) |
| 224 | 2502 if( volumes[i] > 6553.4 ) |
| 2503 int_O_gas_volumes[i] = 65535; | |
|
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2504 else |
| 224 | 2505 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
| 116 | 2506 } |
| 2507 | |
| 167 | 2508 ////////////////////////////////////////////////////////////////////////////// |
| 2509 | |
| 116 | 2510 void deco_push_tissues_to_vault(void) |
| 2511 { | |
| 167 | 2512 overlay unsigned char x; |
|
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2513 RESET_C_STACK |
| 167 | 2514 |
| 116 | 2515 cns_vault = CNS_fraction; |
| 167 | 2516 for (x=0;x<32;x++) |
| 2517 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2518 } |
| 167 | 2519 |
| 116 | 2520 void deco_pull_tissues_from_vault(void) |
| 2521 { | |
| 167 | 2522 overlay unsigned char x; |
|
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2523 RESET_C_STACK |
| 167 | 2524 |
| 2525 for (x=0;x<32;x++) | |
| 2526 pres_tissue[x] = pres_tissue_vault[x]; | |
| 292 | 2527 |
| 2528 // Restore both CNS variable, too. | |
| 2529 CNS_fraction = cns_vault; | |
| 2530 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); | |
| 116 | 2531 } |
| 2532 | |
| 167 | 2533 ////////////////////////////////////////////////////////////////////////////// |
| 2534 // | |
| 184 | 2535 #ifndef CROSS_COMPILE |
| 2536 void main() {} | |
| 2537 #endif |