Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 206:3414169a2bde
changelog updated
| author | heinrichsweikamp |
|---|---|
| date | Fri, 18 Feb 2011 08:56:01 +0100 |
| parents | 2d9af08ed0ac |
| children | 275befc5f39d |
| 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. |
| 116 | 73 // |
| 167 | 74 // TODO: |
| 75 // + Allow to abort MD2 calculation (have to restart next time). | |
| 76 // | |
| 77 // Literature: | |
| 200 | 78 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 79 // 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 |
| 80 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 81 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 82 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 83 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 84 // |
| 85 // | |
| 116 | 86 |
| 87 // ********************* | |
| 88 // ** I N C L U D E S ** | |
| 89 // ********************* | |
| 90 #include <math.h> | |
| 167 | 91 |
| 192 | 92 // *********************************************** |
| 93 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 94 // *********************************************** | |
| 95 | |
| 96 #include "p2_definitions.h" | |
| 97 #include "shared_definitions.h" | |
| 98 | |
| 200 | 99 // Water vapour partial pressure in the lumb. |
| 100 static const float ppWVapour = 0.0627; | |
| 101 | |
| 167 | 102 // ************************* |
| 103 // ** P R O T O T Y P E S ** | |
| 104 // ************************* | |
| 105 | |
| 106 static void calc_hauptroutine(void); | |
| 107 static void calc_nullzeit(void); | |
| 108 | |
| 192 | 109 static void calc_tissue(PARAMETER unsigned char period); |
| 110 static void calc_limit(PARAMETER float GF_current); | |
| 111 | |
| 167 | 112 static void clear_tissue(void); |
| 113 static void calc_ascenttime(void); | |
| 114 static void update_startvalues(void); | |
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115 static void clear_deco_table(void); |
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116 static void update_deco_table(void); |
| 192 | 117 |
| 118 static void backup_sim_pres_tissue(void); | |
| 119 static void restore_sim_pres_tissue(void); | |
| 120 static void sim_tissue(PARAMETER unsigned char period); | |
| 121 static void sim_limit(PARAMETER float GF_current); | |
| 167 | 122 static void calc_gradient_factor(void); |
| 123 static void calc_wo_deco_step_1_min(void); | |
| 124 | |
| 125 static void calc_hauptroutine_data_input(void); | |
| 126 static void calc_hauptroutine_update_tissues(void); | |
| 127 static void calc_hauptroutine_calc_deco(void); | |
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128 static void sim_ascent_to_first_stop(void); |
| 167 | 129 |
| 171 | 130 static void calc_nextdecodepth(void); |
| 116 | 131 |
| 200 | 132 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 133 #pragma udata bank4=0x400 |
| 116 | 134 |
| 135 static float temp_limit; | |
| 136 static float GF_low; | |
| 137 static float GF_high; | |
| 138 static float GF_delta; | |
| 192 | 139 static unsigned char low_depth; // Depth of deepest stop |
| 140 static float locked_GF_step; // GF_delta / low_depth | |
| 141 | |
| 142 static unsigned char temp_depth_limit; | |
| 171 | 143 |
| 192 | 144 // Simulation context: used to predict ascent. |
| 145 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 146 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 147 |
| 192 | 148 // Real context: what we are doing now. |
| 149 static float calc_lead_tissue_limit; // | |
| 116 | 150 |
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151 static unsigned char internal_deco_time[32]; |
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152 static unsigned char internal_deco_depth[32]; |
| 116 | 153 |
| 154 static float cns_vault; | |
| 155 static float pres_tissue_vault[32]; | |
| 156 | |
| 163 | 157 //---- Bank 5 parameters ----------------------------------------------------- |
| 158 #pragma udata bank5=0x500 | |
| 159 | |
| 167 | 160 static unsigned char ci; |
| 116 | 161 static float pres_respiration; |
| 162 static float pres_surface; | |
| 163 static float temp_deco; | |
| 200 | 164 static float ppO2; |
| 165 static float ppHe; | |
| 116 | 166 static float temp_tissue; |
| 200 | 167 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 168 static float He_ratio; // Breathed gas helium ratio. | |
| 169 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 170 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 171 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 172 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 173 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 174 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 175 |
| 164 | 176 static float pres_diluent; // new in v.101 |
| 177 static float deco_diluent; // new in v.101 | |
| 178 static float const_ppO2; // new in v.101 | |
| 179 static float deco_ppO2_change; // new in v.101 | |
| 180 static float deco_ppO2; // new in v.101 | |
| 116 | 181 |
| 200 | 182 static unsigned char sim_gas_last_used; // Last used gas, to detected a gas switch. |
| 203 | 183 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 184 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 185 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 186 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 187 static float CNS_fraction; // new in v.101 | |
| 188 static float float_saturation_multiplier; // new in v.101 | |
| 189 static float float_desaturation_multiplier; // new in v.101 | |
| 167 | 190 static float float_deco_distance; // new in v.101 |
| 191 static char flag_in_divemode; // new in v.108 | |
| 192 | |
| 193 static float deco_gas_change1; // new in v.101 | |
| 194 static float deco_gas_change2; // new in v.109 | |
| 195 static float deco_gas_change3; // new in v.109 | |
| 196 static float deco_gas_change4; // new in v.109 | |
| 197 static float deco_gas_change5; // new in v.109 | |
| 198 | |
| 199 static float deco_N2_ratio1; // new in v.101 | |
| 200 static float deco_He_ratio1; // new in v.101 | |
| 201 | |
| 202 | |
| 163 | 203 //---- Bank 6 parameters ----------------------------------------------------- |
| 204 #pragma udata bank6=0x600 | |
| 116 | 205 |
| 197 | 206 float pres_tissue[32]; |
| 207 float pres_tissue_limit[16]; | |
| 208 float sim_pres_tissue_limit[16]; | |
| 116 | 209 |
| 163 | 210 //---- Bank 7 parameters ----------------------------------------------------- |
| 211 #pragma udata bank7=0x700 | |
| 212 | |
| 197 | 213 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
| 116 | 214 static float sim_pres_tissue_backup[32]; |
| 215 | |
| 163 | 216 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 217 #pragma udata bank8=0x800 |
| 163 | 218 |
| 116 | 219 static char md_pi_subst[256]; |
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220 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 221 |
| 163 | 222 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 223 #pragma udata bank9=0x900 |
| 116 | 224 |
| 163 | 225 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 226 |
| 164 | 227 // internal, dbg: |
| 167 | 228 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 229 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 230 static float DBG_pres_surface; // new in v.108 | |
| 231 static float DBG_GF_low; // new in v.108 | |
| 232 static float DBG_GF_high; // new in v.108 | |
| 233 static float DBG_const_ppO2; // new in v.108 | |
| 234 static float DBG_deco_ppO2_change; // new in v.108 | |
| 235 static float DBG_deco_ppO2; // new in v.108 | |
| 236 static float DBG_deco_N2_ratio; // new in v.108 | |
| 237 static float DBG_deco_He_ratio; // new in v.108 | |
| 238 static float DBG_deco_gas_change; // new in v.108 | |
| 239 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 240 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 241 static float DBG_float_deco_distance; // new in v.108 | |
| 242 static float DBG_deco_N2_ratio; // new in v.108 | |
| 243 static float DBG_deco_He_ratio; // new in v.108 | |
| 244 static float DBG_N2_ratio; // new in v.108 | |
| 245 static float DBG_He_ratio; // new in v.108 | |
| 246 | |
| 167 | 247 ////////////////////////////////////////////////////////////////////////////// |
| 248 ////////////////////////////////////////////////////////////////////////////// | |
| 249 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 250 ////////////////////////////////////////////////////////////////////////////// | |
| 251 ////////////////////////////////////////////////////////////////////////////// | |
| 252 // | |
| 253 // End of PROM code is 17F00, So push tables on PROM top... | |
| 254 // | |
| 255 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 256 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 257 |
| 167 | 258 // Magic table to compute the MD2 HASH |
| 259 // | |
| 260 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 261 rom const rom unsigned short md_pi[] = |
| 116 | 262 { |
| 263 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 264 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 265 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 266 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 267 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 268 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 269 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 270 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 271 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 272 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 273 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 274 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 275 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 276 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 277 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 278 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 279 }; | |
| 280 | |
| 167 | 281 ////////////////////////////////////////////////////////////////////////////// |
| 282 ////////////////////////////////////////////////////////////////////////////// | |
| 283 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 284 ////////////////////////////////////////////////////////////////////////////// | |
| 285 ////////////////////////////////////////////////////////////////////////////// | |
| 286 // | |
| 116 | 287 // all new in v.102 |
| 288 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 289 | |
| 290 #pragma code p2_deco = 0x0C000 | |
| 291 | |
| 167 | 292 ////////////////////////////////////////////////////////////////////////////// |
| 293 // DBS - debug on start of dive | |
| 294 // | |
| 295 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 296 { |
| 167 | 297 overlay char i; // Local loop index. |
| 298 | |
| 299 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 300 int_O_DBS_bitfield = 0; |
| 301 int_O_DBS2_bitfield = 0; | |
| 302 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 303 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 304 else | |
| 305 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 306 int_O_DBG_post_bitfield = 0; | |
| 167 | 307 |
| 308 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 309 char_O_NDL_at_20mtr = 255; |
| 310 | |
| 167 | 311 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 312 DBG_N2_ratio = N2_ratio; |
| 313 DBG_He_ratio = He_ratio; | |
| 314 DBG_char_I_deco_model = char_I_deco_model; | |
| 315 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 316 DBG_pres_surface = pres_surface; | |
| 317 DBG_GF_low = GF_low; | |
| 318 DBG_GF_high = GF_high; | |
| 319 DBG_const_ppO2 = const_ppO2; | |
| 320 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 321 DBG_deco_ppO2 = deco_ppO2; | |
| 167 | 322 DBG_deco_N2_ratio = deco_N2_ratio1; |
| 323 DBG_deco_He_ratio = deco_He_ratio1; | |
| 324 DBG_deco_gas_change = deco_gas_change1; | |
| 116 | 325 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 326 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 327 DBG_float_deco_distance = float_deco_distance; | |
| 328 | |
| 167 | 329 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 330 if(char_I_deco_model) |
| 331 int_O_DBS_bitfield |= DBS_mode; | |
| 332 if(const_ppO2) | |
| 333 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 334 for(i = 16; i < 32; i++) |
| 335 if(pres_tissue[i]) | |
| 116 | 336 int_O_DBS_bitfield |= DBS_HE_sat; |
| 337 if(deco_ppO2_change) | |
| 338 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 339 if(float_saturation_multiplier < 0.99) | |
| 340 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 341 if(float_saturation_multiplier > 1.3) | |
| 342 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 343 if(GF_low < 0.19) | |
| 344 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 345 if(GF_low > 1.01) | |
| 346 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 347 if(GF_high < 0.6) | |
| 348 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 349 if(GF_high > 1.01) | |
| 350 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 351 if((N2_ratio + He_ratio) > 0.95) | |
| 352 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 353 if((N2_ratio + He_ratio) < 0.05) | |
| 354 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 355 if(float_deco_distance > 0.25) | |
| 356 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 357 if(char_I_depth_last_deco > 8) | |
| 358 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 167 | 359 if(DBG_deco_gas_change && ((deco_N2_ratio1 + deco_He_ratio1) > 0.95)) |
| 116 | 360 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 167 | 361 if(DBG_deco_gas_change && ((deco_N2_ratio1 + deco_He_ratio1) < 0.05)) |
| 116 | 362 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 363 if(pres_respiration > 3.0) | |
| 364 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 365 if(pres_surface - pres_respiration > 0.2) | |
| 366 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 367 if(pres_surface < 0.75) | |
| 368 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 369 if(pres_surface > 1.11) | |
| 370 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 371 if(float_desaturation_multiplier < 0.70) | |
| 372 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 373 if(float_desaturation_multiplier > 1.01) | |
| 374 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 375 if(GF_low > GF_high) | |
| 376 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 377 } | |
| 378 | |
| 167 | 379 ////////////////////////////////////////////////////////////////////////////// |
| 380 // DBG - set DBG to end_of_dive | |
| 381 // | |
| 382 static void set_dbg_end_of_dive(void) | |
| 116 | 383 { |
| 384 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 385 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 386 } | |
| 387 | |
| 167 | 388 ////////////////////////////////////////////////////////////////////////////// |
| 389 // DBG - NDL at first 20 m. hit | |
| 390 // | |
| 391 static void check_ndl(void) | |
| 116 | 392 { |
| 167 | 393 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 394 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 395 ) | |
| 116 | 396 { |
| 167 | 397 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 398 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 399 char_O_NDL_at_20mtr = 254; |
| 116 | 400 } |
| 401 } | |
| 402 | |
| 167 | 403 ////////////////////////////////////////////////////////////////////////////// |
| 404 // DBG - multi main during dive | |
| 405 // | |
| 184 | 406 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 407 { |
| 203 | 408 overlay unsigned short temp_DBS = 0; |
| 200 | 409 overlay unsigned char i; // Local loop index. |
| 167 | 410 |
| 116 | 411 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 412 temp_DBS |= DBG_c_gas; | |
| 413 if(DBG_const_ppO2 != const_ppO2) | |
| 414 temp_DBS |= DBG_c_ppO2; | |
| 167 | 415 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 416 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 417 ) | |
| 116 | 418 temp_DBS |= DBG_CdeSAT; |
| 419 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 420 temp_DBS |= DBG_C_MODE; | |
| 421 if(DBG_pres_surface != pres_surface) | |
| 422 temp_DBS |= DBG_C_SURF; | |
| 167 | 423 |
| 424 if( !DBS_HE_sat && !He_ratio) | |
| 425 for(i = 16; i < 32; i++) | |
| 426 if(pres_tissue[i]) | |
| 116 | 427 temp_DBS |= DBG_HEwoHE; |
| 167 | 428 |
| 116 | 429 if(DBG_deco_ppO2 != deco_ppO2) |
| 430 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 431 |
| 432 if( DBG_deco_gas_change != deco_gas_change1 | |
| 433 || DBG_deco_N2_ratio != deco_N2_ratio1 | |
| 434 || DBG_deco_He_ratio != deco_He_ratio1 ) | |
| 116 | 435 temp_DBS |= DBG_C_DGAS; |
| 167 | 436 |
| 116 | 437 if(DBG_float_deco_distance != float_deco_distance) |
| 438 temp_DBS |= DBG_C_DIST; | |
| 439 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 440 temp_DBS |= DBG_C_LAST; | |
| 167 | 441 if( DBG_GF_low != GF_low |
| 442 || DBG_GF_high != GF_high ) | |
| 116 | 443 temp_DBS |= DBG_C_GF; |
| 444 if(pres_respiration > 13.0) | |
| 445 temp_DBS |= DBG_PHIGH; | |
| 446 if(pres_surface - pres_respiration > 0.2) | |
| 447 temp_DBS |= DBG_PLOW; | |
| 448 if(is_post_check) | |
| 449 int_O_DBG_post_bitfield |= temp_DBS; | |
| 450 else | |
| 451 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 452 } | |
| 453 | |
| 167 | 454 ////////////////////////////////////////////////////////////////////////////// |
| 455 // DBG - prior to calc. of dive | |
| 456 // | |
| 457 static void check_pre_dbg(void) | |
| 116 | 458 { |
| 459 check_dbg(0); | |
| 460 } | |
| 461 | |
| 167 | 462 ////////////////////////////////////////////////////////////////////////////// |
| 463 // DBG - after decocalc of dive | |
| 464 // | |
| 465 static void check_post_dbg(void) | |
| 116 | 466 { |
| 467 check_dbg(1); | |
| 468 } | |
| 469 | |
| 165 | 470 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 471 ////////////////////////////////////////////////////////////////////////////// |
| 472 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 473 ////////////////////////////////////////////////////////////////////////////// | |
| 474 ////////////////////////////////////////////////////////////////////////////// | |
| 475 | |
| 203 | 476 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 477 { |
| 184 | 478 #ifdef CROSS_COMPILE |
| 479 extern unsigned short custom_functions[]; | |
| 480 return custom_functions[cf]; | |
| 481 #else | |
| 167 | 482 extern unsigned char hi, lo; |
| 483 extern void getcustom15(); | |
| 484 _asm | |
| 485 movff cf,WREG | |
| 486 call getcustom15,0 | |
| 487 movff lo,PRODL | |
| 488 movff hi,PRODH | |
| 489 _endasm | |
| 184 | 490 #endif |
| 167 | 491 } |
| 492 | |
| 493 ////////////////////////////////////////////////////////////////////////////// | |
| 165 | 494 // read buhlmann tables for compatriment ci |
| 167 | 495 // If period == 0 : 2sec interval |
| 496 // 1 : 1 min interval | |
| 497 // 2 : 10 min interval. | |
| 184 | 498 static void read_buhlmann_coefficients(PARAMETER char period) |
| 165 | 499 { |
| 184 | 500 #ifndef CROSS_COMPILE |
| 167 | 501 // Note: we don't use far rom pointer, because the |
| 502 // 24 bits is to complex, hence we have to set | |
| 503 // the UPPER page ourself... | |
| 504 // --> Set zero if tables are moved to lower pages ! | |
| 505 _asm | |
| 506 movlw 1 | |
| 507 movwf TBLPTRU,0 | |
| 508 _endasm | |
| 184 | 509 #endif |
| 197 | 510 assert( 0 <= ci && ci < 16 ); |
| 167 | 511 |
| 165 | 512 var_N2_a = buhlmann_a[ci]; |
| 513 var_N2_b = buhlmann_b[ci]; | |
| 167 | 514 var_He_a = (buhlmann_a+16)[ci]; |
| 515 var_He_b = (buhlmann_b+16)[ci]; | |
| 516 | |
| 165 | 517 // Check reading consistency: |
| 518 if( (var_N2_a < 0.231) | |
| 519 || (var_N2_a > 1.27) | |
| 520 || (var_N2_b < 0.504) | |
| 521 || (var_N2_b > 0.966) | |
| 522 || (var_He_a < 0.510) | |
| 523 || (var_He_a > 1.75) | |
| 524 || (var_He_b < 0.423) | |
| 525 || (var_He_b > 0.927) | |
| 526 ) | |
| 527 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 167 | 528 |
| 165 | 529 // Integration intervals. |
| 167 | 530 switch(period) |
| 165 | 531 { |
| 167 | 532 case -1://---- no interval ----------------------------------------------- |
| 533 var_N2_e = var_He_e = 0.0; | |
| 534 break; | |
| 535 | |
| 165 | 536 case 0: //---- 2 sec ----------------------------------------------------- |
| 537 var_N2_e = e2secs[ci]; | |
| 167 | 538 var_He_e = (e2secs+16)[ci]; |
| 165 | 539 |
| 540 // Check reading consistency: | |
| 541 if( (var_N2_e < 0.0000363) | |
| 542 || (var_N2_e > 0.00577) | |
| 543 || (var_He_e < 0.0000961) | |
| 544 || (var_He_e > 0.150) | |
| 545 ) | |
| 546 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 547 | |
| 548 break; | |
| 549 | |
| 550 case 1: //---- 1 min ----------------------------------------------------- | |
| 551 var_N2_e = e1min[ci]; | |
| 167 | 552 var_He_e = (e1min+16)[ci]; |
| 165 | 553 |
| 554 // Check reading consistency: | |
| 555 if( (var_N2_e < 1.09E-3) | |
| 556 || (var_N2_e > 0.1592) | |
| 557 || (var_He_e < 0.00288) | |
| 558 || (var_He_e > 0.3682) | |
| 559 ) | |
| 560 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 561 | |
| 562 break; | |
| 563 | |
| 564 case 2: //---- 10 min ---------------------------------------------------- | |
| 565 var_N2_e = e10min[ci]; | |
| 167 | 566 var_He_e = (e10min+16)[ci]; |
| 165 | 567 |
| 568 // Check reading consistency: | |
| 569 if( (var_N2_e < 0.01085) | |
| 570 || (var_N2_e > 0.82323) | |
| 571 || (var_He_e < 0.02846) | |
| 572 || (var_He_e > 0.98986) | |
| 573 ) | |
| 574 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 575 | |
| 576 break; | |
| 197 | 577 |
| 578 default: | |
| 579 assert(0); // Never go there... | |
| 165 | 580 } |
| 581 } | |
| 582 | |
| 583 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 584 // calc_next_decodepth_GF |
| 165 | 585 // |
| 116 | 586 // new in v.102 |
| 165 | 587 // |
| 116 | 588 // INPUT, changing during dive: |
| 192 | 589 // low_depth |
| 167 | 590 // |
| 116 | 591 // INPUT, fixed during dive: |
| 167 | 592 // pres_surface |
| 593 // GF_delta | |
| 594 // GF_high | |
| 595 // GF_low | |
| 171 | 596 // char_I_depth_last_deco |
| 167 | 597 // float_deco_distance |
| 598 // | |
| 116 | 599 // OUTPUT |
| 171 | 600 // locked_GF_step |
| 167 | 601 // temp_deco |
| 602 // temp_depth_limt | |
| 192 | 603 // low_depth |
| 167 | 604 // |
| 171 | 605 static void calc_nextdecodepth(void) |
| 167 | 606 { |
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607 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 608 if (char_I_deco_model == 1) |
| 609 { | |
| 192 | 610 // Recompute leading gas limit, at current depth: |
| 611 overlay float depth = (temp_deco - pres_surface) / 0.09995; | |
| 612 assert( depth >= 0.0 ); | |
| 203 | 613 assert( low_depth < 255 ); |
| 167 | 614 |
| 192 | 615 if( depth > low_depth ) |
| 616 sim_limit( GF_low ); | |
| 617 else | |
| 618 sim_limit( GF_high - depth * locked_GF_step ); | |
| 619 | |
| 620 // Stops are needed ? | |
| 621 if( sim_lead_tissue_limit > pres_surface ) | |
| 622 { | |
| 623 // Deepest stop, in meter. | |
| 203 | 624 overlay unsigned char first_stop = 3 * (short)(0.99 + (sim_lead_tissue_limit - pres_surface) / 0.29985); |
| 192 | 625 assert( first_stop < 128 ); |
| 171 | 626 |
| 192 | 627 // Apply correction for the first stop. |
| 628 if( first_stop == 3 ) // new in v104 | |
| 629 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 630 |
| 192 | 631 // Is it a new deepest first stop ? If yes this is the reference for |
| 632 // the varying gradient factor. So reset that: | |
| 633 if( first_stop > low_depth ) | |
| 634 { | |
| 635 // Store the deepest stop depth, as reference for GF_low. | |
| 636 low_depth = first_stop; | |
| 637 locked_GF_step = GF_delta / low_depth; | |
| 638 } | |
| 171 | 639 |
| 192 | 640 // Check all stops until one is higher than tolerated presure |
| 641 while(first_stop > 0) | |
| 642 { | |
| 643 overlay unsigned char next_stop; // Next index (0..30) | |
| 644 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 645 |
| 192 | 646 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 647 next_stop = 0; | |
| 648 else | |
| 649 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 650 if( first_stop == 3 ) | |
| 651 first_stop = char_I_depth_last_deco; | |
| 167 | 652 |
| 192 | 653 pres_stop = next_stop * 0.09995 // Meters to bar |
| 654 + pres_surface; | |
| 655 | |
| 656 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 657 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 658 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 659 |
| 192 | 660 // upper limit (lowest pressure tolerated): |
| 661 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 662 break; | |
| 663 | |
| 664 // Else, validate that stop and loop... | |
| 665 first_stop = next_stop; | |
| 666 } | |
| 171 | 667 |
| 192 | 668 // first_stop is the last validated depth found: |
| 669 temp_depth_limit = first_stop; // Stop depth, in meter. | |
| 670 temp_deco = first_stop * 0.09995 // Convert to bars, too. | |
| 671 + pres_surface; | |
| 672 if (first_stop > 0) | |
| 673 temp_deco += float_deco_distance; // Add security distance (bars too) | |
| 674 } | |
| 171 | 675 else |
| 192 | 676 { |
| 677 temp_deco = pres_surface; // surface ambient presure | |
| 678 temp_depth_limit = 0; // stop depth, in meter. | |
| 679 } | |
| 116 | 680 } |
| 167 | 681 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 682 { |
| 192 | 683 overlay float pres_gradient; |
| 684 | |
| 685 // Original model | |
| 116 | 686 // optimized in v.101 |
| 171 | 687 // char_I_depth_last_deco included in v.101 |
| 116 | 688 |
| 192 | 689 // Compute sim_lead_tissue_limit too, but just once. |
| 690 sim_limit(1.0); | |
| 691 | |
| 692 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 693 if (pres_gradient >= 0) |
| 116 | 694 { |
| 192 | 695 pres_gradient /= 0.29985; // Bar --> stop number; |
| 203 | 696 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> meter : depth for deco |
| 171 | 697 if (temp_depth_limit == 0) // At surface ? |
| 116 | 698 temp_deco = pres_surface; |
| 699 else | |
| 700 { | |
| 171 | 701 if (temp_depth_limit < char_I_depth_last_deco) // Implement last stop at 4m/5m/6m... |
| 702 temp_depth_limit = char_I_depth_last_deco; | |
| 703 temp_deco = (temp_depth_limit * 0.09995) // depth for deco [bar] = depth | |
| 704 + float_deco_distance // + security margin | |
| 705 + pres_surface; // + surface ambient presure | |
| 706 } | |
| 707 } | |
| 116 | 708 else |
| 709 { | |
| 171 | 710 temp_deco = pres_surface; // surface ambient presure |
| 192 | 711 temp_depth_limit = 0; // stop depth, in meter. |
| 171 | 712 } |
| 713 } | |
| 167 | 714 } |
| 116 | 715 |
| 167 | 716 ////////////////////////////////////////////////////////////////////////////// |
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717 // copy_deco_table |
| 167 | 718 // |
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719 // Buffer the stops, once computed, so we can continue to display them |
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720 // while computing the next set. |
| 167 | 721 // |
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722 static void copy_deco_table(void) |
| 116 | 723 { |
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724 // Copy depth of the first (deepest) stop, because when reversing |
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725 // order, it will be hard to find... |
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726 char_O_first_deco_depth = internal_deco_depth[0]; |
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727 char_O_first_deco_time = internal_deco_time [0]; |
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728 |
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729 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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730 { |
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731 overlay unsigned char x, y; |
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732 |
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733 //---- First: search the first non-null depth |
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734 for(x=31; x != 0; --x) |
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735 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 736 |
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737 //---- Second: copy to output table (in reverse order) |
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738 for(y=0; y<32; y++, --x) |
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739 { |
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740 char_O_deco_depth[y] = internal_deco_depth[x]; |
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741 char_O_deco_time [y] = internal_deco_time [x]; |
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742 |
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743 // Stop only once the last transfer is done. |
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744 if( x == 0 ) break; |
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745 } |
| 116 | 746 |
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747 //---- Third: fill table end with null |
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748 for(y++; y<32; y++) |
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749 { |
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750 char_O_deco_time [y] = 0; |
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751 char_O_deco_depth[y] = 0; |
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752 } |
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753 } |
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754 else //---- Straight copy ------------------------------------------------ |
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755 { |
| 167 | 756 overlay unsigned char x; |
| 757 | |
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758 for(x=0; x<32; x++) |
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759 { |
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760 char_O_deco_depth[x] = internal_deco_depth[x]; |
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761 char_O_deco_time [x] = internal_deco_time [x]; |
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762 } |
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763 } |
| 167 | 764 } |
| 116 | 765 |
| 167 | 766 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 767 // temp_tissue_safety // |
| 167 | 768 // |
| 116 | 769 // outsourced in v.102 |
| 167 | 770 // |
| 771 // Apply safety factors for brand ZH-L16 model. | |
| 772 // | |
| 773 static void temp_tissue_safety(void) | |
| 116 | 774 { |
| 197 | 775 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 776 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 777 | |
| 167 | 778 if( char_I_deco_model == 0 ) |
| 116 | 779 { |
| 780 if (temp_tissue < 0.0) | |
| 126 | 781 temp_tissue *= float_desaturation_multiplier; |
| 116 | 782 else |
| 126 | 783 temp_tissue *= float_saturation_multiplier; |
| 116 | 784 } |
| 167 | 785 } |
| 116 | 786 |
| 167 | 787 ////////////////////////////////////////////////////////////////////////////// |
| 788 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 789 // ** THE JUMP-IN CODE ** |
| 790 // ** for the asm code ** | |
| 167 | 791 ////////////////////////////////////////////////////////////////////////////// |
| 792 ////////////////////////////////////////////////////////////////////////////// | |
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793 |
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794 void fillDataStack(void) |
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795 { |
| 184 | 796 #ifndef CROSS_COMPILE |
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797 _asm |
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798 LFSR 1,C_STACK |
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799 MOVLW 0xCC |
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800 loop: MOVWF POSTINC1,0 |
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801 TSTFSZ FSR1L,0 |
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802 BRA loop |
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803 |
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804 LFSR 1,C_STACK |
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805 LFSR 2,C_STACK |
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806 _endasm |
| 184 | 807 #endif |
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808 } |
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809 |
| 167 | 810 ////////////////////////////////////////////////////////////////////////////// |
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811 // When calling C code from ASM context, the data stack pointer and |
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812 // frames should be reset. Bank3 is dedicated to the stack (see the |
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813 // .lkr script). |
| 184 | 814 #ifdef CROSS_COMPILE |
| 815 # define RESET_C_STACK | |
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816 #else |
| 184 | 817 # ifdef __DEBUG |
| 818 # define RESET_C_STACK fillDataStack(); | |
| 819 # else | |
| 820 # define RESET_C_STACK \ | |
| 821 _asm \ | |
| 822 LFSR 1, C_STACK \ | |
| 823 LFSR 2, C_STACK \ | |
| 824 _endasm | |
| 825 # endif | |
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826 #endif |
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827 |
| 167 | 828 ////////////////////////////////////////////////////////////////////////////// |
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829 // Called every 2 seconds during diving. |
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830 // update tissues every time. |
| 184 | 831 // |
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832 // Every 6 seconds (or slower when TTS > 16): |
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833 // - update deco table (char_O_deco_time/depth) with new values. |
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834 // - update ascent time, |
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835 // - set status to zero (so we can check there is new results). |
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836 // |
| 116 | 837 void deco_calc_hauptroutine(void) |
| 838 { | |
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839 RESET_C_STACK |
| 116 | 840 calc_hauptroutine(); |
| 841 int_O_desaturation_time = 65535; | |
| 842 } | |
| 843 | |
| 167 | 844 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 845 // Reset decompression model: |
| 846 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 847 // + Reset last stop to 0m | |
| 848 // + Reset all model output. | |
| 116 | 849 void deco_clear_tissue(void) |
| 850 { | |
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851 RESET_C_STACK |
| 116 | 852 clear_tissue(); |
| 853 } | |
| 854 | |
| 167 | 855 ////////////////////////////////////////////////////////////////////////////// |
| 856 | |
| 116 | 857 void deco_calc_wo_deco_step_1_min(void) |
| 858 { | |
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859 RESET_C_STACK |
| 116 | 860 calc_wo_deco_step_1_min(); |
| 861 deco_calc_desaturation_time(); | |
| 862 } | |
| 863 | |
| 167 | 864 ////////////////////////////////////////////////////////////////////////////// |
| 865 | |
| 116 | 866 void deco_debug(void) |
| 867 { | |
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868 RESET_C_STACK |
| 116 | 869 } |
| 870 | |
| 167 | 871 ////////////////////////////////////////////////////////////////////////////// |
| 201 | 872 // Calculate gas switches |
| 873 // | |
| 874 // | |
| 875 void check_gas_switch(void) | |
| 876 { | |
| 203 | 877 overlay unsigned char temp_gas_switch = 0; |
| 201 | 878 overlay float switch_deco; |
| 879 | |
| 880 calc_N2_ratio = N2_ratio; | |
| 881 calc_He_ratio = He_ratio; | |
| 882 | |
| 883 if (char_I_const_ppO2 == 0) | |
| 884 { | |
| 885 deco_diluent = temp_deco; | |
| 886 | |
| 887 // Keep selecting the best gas during the ascent simulation. | |
| 888 if( deco_gas_change1 && (temp_deco < deco_gas_change1)) | |
| 889 { | |
| 890 calc_N2_ratio = deco_N2_ratio1; | |
| 891 calc_He_ratio = deco_He_ratio1; | |
| 892 temp_gas_switch = 1; | |
| 893 switch_deco = deco_gas_change1; | |
| 894 } | |
| 895 if(deco_gas_change2 && (temp_deco < deco_gas_change2)) | |
| 896 { | |
| 897 calc_N2_ratio = char_I_deco_N2_ratio2 * 0.01; | |
| 898 calc_He_ratio = char_I_deco_He_ratio2 * 0.01; | |
| 899 temp_gas_switch = 2; | |
| 900 switch_deco = deco_gas_change2; | |
| 901 } | |
| 902 if(deco_gas_change3 && (temp_deco < deco_gas_change3)) | |
| 903 { | |
| 904 calc_N2_ratio = char_I_deco_N2_ratio3 * 0.01; | |
| 905 calc_He_ratio = char_I_deco_He_ratio3 * 0.01; | |
| 906 temp_gas_switch = 3; | |
| 907 switch_deco = deco_gas_change3; | |
| 908 } | |
| 909 if(deco_gas_change4 && (temp_deco < deco_gas_change4)) | |
| 910 { | |
| 911 calc_N2_ratio = char_I_deco_N2_ratio4 * 0.01; | |
| 912 calc_He_ratio = char_I_deco_He_ratio4 * 0.01; | |
| 913 temp_gas_switch = 4; | |
| 914 switch_deco = deco_gas_change4; | |
| 915 } | |
| 916 if(deco_gas_change5 && (temp_deco < deco_gas_change5)) | |
| 917 { | |
| 918 calc_N2_ratio = char_I_deco_N2_ratio5 * 0.01; | |
| 919 calc_He_ratio = char_I_deco_He_ratio5 * 0.01; | |
| 920 temp_gas_switch = 5; | |
| 921 switch_deco = deco_gas_change5; | |
| 922 } | |
| 923 } | |
| 924 | |
| 203 | 925 // If there is a better gas available |
| 926 if( temp_gas_switch ) | |
| 201 | 927 { |
| 203 | 928 // Should detect gas switch only when gas do changes... |
| 929 // sim_gas_last_used: used to detect just once in each ascent simu. | |
| 930 // N2_ratio : used to detect when already breathing that gas. | |
| 931 if( sim_gas_last_used < temp_gas_switch | |
| 932 && sim_gas_delay <= sim_dive_mins | |
| 933 && (calc_N2_ratio != N2_ratio || calc_He_ratio != He_ratio)) | |
| 934 { | |
| 935 sim_gas_last_used = temp_gas_switch; | |
| 936 sim_gas_delay = read_custom_function(55); | |
| 201 | 937 |
| 203 | 938 // Apply depth correction ONLY if CF#55 is not null: |
| 939 if( sim_gas_delay > 0 ) | |
| 940 { | |
| 941 sim_gas_delay += sim_dive_mins; | |
| 942 temp_deco = switch_deco - float_deco_distance; | |
| 943 temp_depth_limit = (temp_deco - pres_surface) / 0.09985; | |
| 944 } | |
| 201 | 945 } |
| 946 } | |
| 203 | 947 else |
| 948 sim_gas_delay = 0; | |
| 201 | 949 |
| 950 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 951 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 952 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 953 } | |
| 954 | |
| 955 ////////////////////////////////////////////////////////////////////////////// | |
| 956 // | |
| 957 static void alveolar_presures(void) | |
| 958 { | |
| 959 if (char_I_const_ppO2 != 0) | |
| 960 { | |
| 961 if (temp_deco > deco_ppO2_change) | |
| 962 { | |
| 963 deco_diluent = ((temp_deco - const_ppO2)/(N2_ratio + He_ratio)); | |
| 964 } | |
| 965 else | |
| 966 { | |
| 967 deco_diluent = ((temp_deco - deco_ppO2)/(N2_ratio + He_ratio)); | |
| 968 } | |
| 969 } | |
| 970 | |
| 971 if (deco_diluent > temp_deco) | |
| 972 deco_diluent = temp_deco; | |
| 973 if (deco_diluent > ppWVapour) | |
| 974 { | |
| 975 ppO2 = calc_N2_ratio * (deco_diluent - ppWVapour); | |
| 976 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); | |
| 977 } | |
| 978 else | |
| 979 { | |
| 980 ppO2 = 0.0; | |
| 981 ppHe = 0.0; | |
| 982 } | |
| 983 assert( 0.0 <= ppO2 && ppO2 < 14.0 ); | |
| 984 assert( 0.0 <= ppHe && ppHe < 14.0 ); | |
| 985 } | |
| 986 | |
| 987 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 988 // clear_tissue |
| 989 // | |
| 165 | 990 // optimized in v.101 (var_N2_a) |
| 167 | 991 // |
| 992 // preload tissues with standard pressure for the given ambient pressure. | |
| 993 // Note: fixed N2_ratio for standard air. | |
| 201 | 994 // |
| 167 | 995 static void clear_tissue(void) |
| 116 | 996 { |
| 997 flag_in_divemode = 0; | |
| 998 int_O_DBS_bitfield = 0; | |
| 999 int_O_DBS2_bitfield = 0; | |
| 1000 int_O_DBG_pre_bitfield = 0; | |
| 1001 int_O_DBG_post_bitfield = 0; | |
| 1002 char_O_NDL_at_20mtr = 255; | |
| 1003 | |
| 167 | 1004 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1005 N2_ratio = 0.7902; | |
| 126 | 1006 pres_respiration = (float)int_I_pres_respiration / 1000.0; |
| 164 | 1007 |
| 167 | 1008 for(ci=0; ci<16; ci++) |
| 126 | 1009 { |
| 197 | 1010 // cycle through the 16 Bühlmann tissues |
| 200 | 1011 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
| 164 | 1012 pres_tissue[ci] = p; |
| 197 | 1013 |
| 184 | 1014 read_buhlmann_coefficients(-1); |
| 165 | 1015 |
| 1016 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 1017 if( p < 0.0 ) |
| 1018 p = 0.0; | |
| 1019 pres_tissue_limit[ci] = p; | |
| 1020 | |
| 197 | 1021 // cycle through the 16 Bühlmann tissues for Helium |
| 167 | 1022 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1023 } // for 0 to 16 |
| 116 | 1024 |
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1025 clear_deco_table(); |
| 126 | 1026 char_O_deco_status = 0; |
| 1027 char_O_nullzeit = 0; | |
| 168 | 1028 int_O_ascenttime = 0; |
| 126 | 1029 char_O_gradient_factor = 0; |
| 1030 char_O_relative_gradient_GF = 0; | |
| 197 | 1031 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 1032 } |
| 116 | 1033 |
| 167 | 1034 ////////////////////////////////////////////////////////////////////////////// |
| 1035 // calc_hauptroutine | |
| 1036 // | |
| 1037 // this is the major code in dive mode calculates: | |
| 116 | 1038 // the tissues, |
| 167 | 1039 // the bottom time, |
| 1040 // and simulates the ascend with all deco stops. | |
| 171 | 1041 // |
| 1042 // The deco_state sequence is : | |
| 1043 // 3 (at surface) | |
| 1044 // +---> 0 : calc nullzeit | |
| 1045 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1046 // | +-> 1 : simulate up to 16min of stops. | |
| 1047 // | +------< not finished | |
| 1048 // +--------< finish | |
| 1049 // | |
| 167 | 1050 static void calc_hauptroutine(void) |
| 116 | 1051 { |
| 186 | 1052 static float backup_GF_step; |
| 192 | 1053 static unsigned char backup_low_depth; |
| 201 | 1054 static unsigned char backup_gas_used; |
| 203 | 1055 static unsigned char backup_gas_delay; |
| 186 | 1056 |
| 116 | 1057 calc_hauptroutine_data_input(); |
| 1058 | |
| 1059 if(!flag_in_divemode) | |
| 1060 { | |
| 1061 flag_in_divemode = 1; | |
| 1062 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1063 } | |
| 1064 else | |
| 1065 check_pre_dbg(); | |
| 1066 | |
| 1067 calc_hauptroutine_update_tissues(); | |
| 1068 calc_gradient_factor(); | |
| 1069 | |
| 167 | 1070 // toggle between calculation for nullzeit (bottom time), |
| 1071 // deco stops | |
| 1072 // and more deco stops (continue) | |
| 1073 switch( char_O_deco_status ) | |
| 116 | 1074 { |
| 186 | 1075 case 3: //---- At surface: start a new dive ------------------------------ |
| 1076 clear_deco_table(); | |
| 1077 copy_deco_table(); | |
| 200 | 1078 int_O_ascenttime = 0; // Reset DTR. |
| 1079 char_O_nullzeit = 0; // Reset bottom time. | |
| 1080 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 201 | 1081 |
| 1082 // Values that should be reset just once for the full real dive | |
| 1083 // (not every time we simulate an ascent): | |
| 1084 low_depth = 0; // Reset GF history. | |
| 192 | 1085 backup_low_depth = 255; // backup is empty... |
| 203 | 1086 sim_gas_last_used = 0; // Reset gas switch history. |
| 1087 sim_gas_delay = 0; | |
| 1088 sim_dive_mins = 0; | |
| 201 | 1089 |
| 203 | 1090 break; |
| 186 | 1091 |
| 167 | 1092 case 0: //---- bottom time ----------------------------------------------- |
| 1093 calc_nullzeit(); | |
| 1094 check_ndl(); | |
| 186 | 1095 char_O_deco_status = 2; // calc ascent next time. |
| 1096 break; | |
| 1097 | |
| 1098 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 201 | 1099 // Backup ascention state, so the simulation won't polute the real |
| 1100 // dive data. | |
| 186 | 1101 backup_GF_step = locked_GF_step; |
| 192 | 1102 backup_low_depth = low_depth; |
| 203 | 1103 |
| 1104 // Check proposed gas at begin of ascent simulation | |
| 1105 temp_deco = pres_respiration; // Starts from current real depth. | |
| 1106 sim_dive_mins = int_I_divemins; // and time. | |
| 1107 check_gas_switch(); | |
| 1108 | |
| 1109 backup_gas_used = sim_gas_last_used;// And save for later simu steps. | |
| 1110 backup_gas_delay = sim_gas_delay; | |
| 186 | 1111 |
| 1112 sim_ascent_to_first_stop(); | |
| 201 | 1113 |
| 1114 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
| 167 | 1115 break; |
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1116 |
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1117 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1118 calc_hauptroutine_calc_deco(); |
| 186 | 1119 |
| 1120 // If simulation is finished, restore the GF low reference, so that | |
| 1121 // next ascent simulation is done from the current depth: | |
| 192 | 1122 if( char_O_deco_status == 0 && backup_low_depth != 255) |
| 186 | 1123 { |
| 1124 locked_GF_step = backup_GF_step; | |
| 192 | 1125 low_depth = backup_low_depth; |
| 201 | 1126 sim_gas_last_used = backup_gas_used; |
| 203 | 1127 sim_gas_delay = backup_gas_delay; |
| 1128 | |
| 1129 backup_low_depth = 255; | |
| 186 | 1130 } |
| 167 | 1131 break; |
| 116 | 1132 } |
| 167 | 1133 |
| 116 | 1134 check_post_dbg(); |
| 1135 } | |
| 1136 | |
| 167 | 1137 ////////////////////////////////////////////////////////////////////////////// |
| 1138 // calc_hauptroutine_data_input | |
| 1139 // | |
| 1140 // Reset all C-code dive parameters from their ASM-code values. | |
| 1141 // Detect gas change condition. | |
| 1142 // | |
| 116 | 1143 void calc_hauptroutine_data_input(void) |
| 1144 { | |
| 203 | 1145 overlay short int_temp; |
| 126 | 1146 |
| 197 | 1147 pres_respiration = int_I_pres_respiration * 0.001; |
| 1148 pres_surface = int_I_pres_surface * 0.001; | |
| 1149 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1150 He_ratio = char_I_He_ratio * 0.01; | |
| 1151 deco_N2_ratio1 = char_I_deco_N2_ratio1 * 0.01; | |
| 1152 deco_He_ratio1 = char_I_deco_He_ratio1 * 0.01; | |
| 1153 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1154 |
| 126 | 1155 // ____________________________________________________ |
| 1156 // | |
| 1157 // _____________ G A S _ C H A N G E S ________________ | |
| 1158 // ____________________________________________________ | |
| 1159 | |
| 203 | 1160 // Keep a marhin of 150mbar = 1.50m |
| 126 | 1161 int_temp = (int_I_pres_respiration - int_I_pres_surface) + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; |
| 1162 | |
| 200 | 1163 deco_gas_change1 = 0.0; |
| 1164 deco_gas_change2 = 0.0; | |
| 1165 deco_gas_change3 = 0.0; | |
| 1166 deco_gas_change4 = 0.0; | |
| 1167 deco_gas_change5 = 0.0; | |
| 116 | 1168 |
| 203 | 1169 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
| 167 | 1170 if(char_I_deco_gas_change1) |
| 126 | 1171 { |
| 203 | 1172 if( int_temp > 100 *(short)char_I_deco_gas_change1 ) |
| 1173 deco_gas_change1 = char_I_deco_gas_change1 / 9.995 | |
| 1174 + pres_surface | |
| 1175 + float_deco_distance; | |
| 126 | 1176 } |
| 1177 if(char_I_deco_gas_change2) | |
| 1178 { | |
| 203 | 1179 if( int_temp > 100 *(short)char_I_deco_gas_change2 ) |
| 1180 deco_gas_change2 = char_I_deco_gas_change2 / 9.995 | |
| 1181 + pres_surface | |
| 1182 + float_deco_distance; | |
| 126 | 1183 } |
| 1184 if(char_I_deco_gas_change3) | |
| 1185 { | |
| 203 | 1186 if( int_temp > 100 *(short)char_I_deco_gas_change3 ) |
| 1187 deco_gas_change3 = char_I_deco_gas_change3 / 9.995 | |
| 1188 + pres_surface | |
| 1189 + float_deco_distance; | |
| 126 | 1190 } |
| 1191 if(char_I_deco_gas_change4) | |
| 1192 { | |
| 203 | 1193 if( int_temp > 100 *(short)char_I_deco_gas_change4 ) |
| 1194 deco_gas_change4 = char_I_deco_gas_change4 / 9.995 | |
| 1195 + pres_surface | |
| 1196 + float_deco_distance; | |
| 126 | 1197 } |
| 1198 if(char_I_deco_gas_change5) | |
| 1199 { | |
| 203 | 1200 if( int_temp > 100 *(short)char_I_deco_gas_change5 ) |
| 1201 deco_gas_change5 = char_I_deco_gas_change5 / 9.995 | |
| 1202 + pres_surface | |
| 1203 + float_deco_distance; | |
| 126 | 1204 } |
| 116 | 1205 |
| 197 | 1206 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1207 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
| 1208 + pres_surface | |
| 1209 + float_deco_distance; | |
| 1210 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1211 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1212 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1213 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1214 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1215 GF_delta = GF_high - GF_low; |
| 116 | 1216 } |
| 1217 | |
| 167 | 1218 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1219 // |
| 1220 // | |
| 116 | 1221 void calc_hauptroutine_update_tissues(void) |
| 1222 { | |
| 197 | 1223 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1224 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1225 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 1226 | |
| 1227 if (char_I_const_ppO2 == 0) // new in v.101 | |
| 167 | 1228 pres_diluent = pres_respiration; // new in v.101 |
| 186 | 1229 else |
| 1230 { | |
| 167 | 1231 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
| 186 | 1232 if (pres_diluent > pres_respiration) // new in v.101 |
| 1233 pres_diluent = pres_respiration; // new in v.101 | |
| 1234 } | |
| 200 | 1235 if (pres_diluent > ppWVapour) // new in v.101 |
| 116 | 1236 { |
| 200 | 1237 ppO2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
| 1238 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 | |
| 116 | 1239 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1240 } | |
| 167 | 1241 else // new in v.101 |
| 116 | 1242 { |
| 200 | 1243 ppO2 = 0.0; // new in v.101 |
| 1244 ppHe = 0.0; // new in v.101 | |
| 116 | 1245 char_O_diluent = 0; |
| 1246 } | |
| 1247 | |
| 1248 if(!char_I_step_is_1min) | |
| 192 | 1249 calc_tissue(0); |
| 116 | 1250 else |
| 192 | 1251 calc_tissue(1); |
| 186 | 1252 |
| 192 | 1253 // Calc limit for surface, ie. GF_high. |
| 1254 calc_limit(GF_high); | |
| 186 | 1255 |
| 203 | 1256 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 1257 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 192 | 1258 |
| 1259 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1260 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1261 { |
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1262 char_O_nullzeit = 0; // deco necessary |
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1263 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1264 } |
| 171 | 1265 } |
| 1266 | |
| 116 | 1267 |
| 167 | 1268 ////////////////////////////////////////////////////////////////////////////// |
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1269 // Compute stops. |
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1270 // |
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1271 // Note: because this can be very long, break on 16 iterations, and set state |
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1272 // to 0 when finished, or to 1 when needing to continue. |
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1273 // |
| 116 | 1274 void calc_hauptroutine_calc_deco(void) |
| 1275 { | |
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1276 overlay unsigned char loop; |
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1277 |
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1278 for(loop = 0; loop < 16; ++loop) |
| 116 | 1279 { |
| 197 | 1280 // Do not ascent while doing a gas switch. |
| 203 | 1281 if( sim_gas_delay <= sim_dive_mins ) |
| 1282 { | |
| 197 | 1283 calc_nextdecodepth(); |
| 116 | 1284 |
| 203 | 1285 //---- Finish computations once surface is reached --------------- |
| 1286 if( temp_depth_limit == 0 ) | |
| 1287 { | |
| 1288 copy_deco_table(); | |
| 1289 calc_ascenttime(); | |
| 1290 char_O_deco_status = 0; // calc nullzeit next time. | |
| 1291 return; | |
| 1292 } | |
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1293 |
| 203 | 1294 //---- Else, continue simulating the stops ----------------------- |
| 197 | 1295 check_gas_switch(); // Calculate N2_ratio and He_ratio. |
| 203 | 1296 } |
| 197 | 1297 |
| 203 | 1298 //---- Then update tissue and decoplan ------------------------------- |
| 1299 sim_dive_mins++; // Advance simulated time by 1 minute. | |
| 1300 alveolar_presures(); // Updates ppN2 and ppHe. | |
| 192 | 1301 sim_tissue(1); // Simulate compartiments for 1 minute. |
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1302 update_deco_table(); // Add one minute stops. |
| 116 | 1303 } |
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1304 |
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1305 // Surface not reached, need more stops... |
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1306 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1307 } |
| 1308 | |
| 167 | 1309 ////////////////////////////////////////////////////////////////////////////// |
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1310 // Simulation ascention to first deco stop. |
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1311 // |
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1312 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1313 // there is no need to break on more that 16 iterations |
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1314 // (or we are already in deep shit). |
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1315 // |
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1316 void sim_ascent_to_first_stop(void) |
| 116 | 1317 { |
| 171 | 1318 update_startvalues(); |
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1319 clear_deco_table(); |
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1320 |
| 200 | 1321 temp_deco = pres_respiration; // Starts from current real depth. |
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1322 |
| 203 | 1323 // Loop until first stop, gas switch, or surface is reached. |
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1324 for(;;) |
| 116 | 1325 { |
| 203 | 1326 // Do we have a gas switch going on ? |
| 1327 if( sim_gas_delay > sim_dive_mins ) | |
| 1328 break; | |
| 1329 | |
| 1330 // No: try ascending 1 full minute. | |
| 1331 temp_deco -= 1.0; // Ascent 1 min, at 10m/min. == 1bar/min. | |
| 1332 | |
| 1333 // Did we reach surface ? | |
| 1334 if( temp_deco <= pres_surface ) | |
| 1335 { | |
| 1336 temp_deco = pres_surface; // Yes: finished ! | |
| 1337 break; | |
| 1338 } | |
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1339 |
| 192 | 1340 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1341 sim_limit(GF_low); | |
| 116 | 1342 |
| 203 | 1343 // Did we reach deepest remaining stop ? |
| 192 | 1344 if( temp_deco <= sim_lead_tissue_limit ) |
| 201 | 1345 { |
| 1346 temp_deco = sim_lead_tissue_limit; | |
| 1347 break; // Return stop found ! | |
| 1348 } | |
| 1349 | |
| 203 | 1350 temp_deco += 0.5; // Check gas change 5 meter below new depth. |
| 1351 check_gas_switch(); | |
| 1352 temp_deco -= 0.5; // Back to new depth. | |
| 171 | 1353 |
| 203 | 1354 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 1355 alveolar_presures(); // Calculate ppO2/ppHe at new depth. | |
| 1356 sim_tissue(1); // and update tissues for 1 min. | |
| 1357 } | |
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1358 |
| 203 | 1359 // Always updates depth in meter, too: |
| 1360 temp_depth_limit = (temp_deco - pres_surface) / 0.09985; | |
| 167 | 1361 } |
| 116 | 1362 |
| 167 | 1363 ////////////////////////////////////////////////////////////////////////////// |
| 1364 // calc_tissue | |
| 1365 // | |
| 116 | 1366 // optimized in v.101 |
| 167 | 1367 // |
| 184 | 1368 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1369 { |
| 126 | 1370 for (ci=0;ci<16;ci++) |
| 1371 { | |
| 184 | 1372 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1373 |
| 126 | 1374 // N2 |
| 200 | 1375 temp_tissue = (ppO2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1376 temp_tissue_safety(); |
| 167 | 1377 pres_tissue[ci] += temp_tissue; |
| 165 | 1378 |
| 126 | 1379 // He |
| 200 | 1380 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1381 temp_tissue_safety(); |
| 167 | 1382 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1383 } |
| 167 | 1384 } |
| 116 | 1385 |
| 167 | 1386 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1387 // calc_limit |
| 167 | 1388 // |
| 192 | 1389 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1390 // |
| 192 | 1391 static void calc_limit(PARAMETER float GF_current) |
| 167 | 1392 { |
| 192 | 1393 char_O_gtissue_no = 255; |
| 1394 calc_lead_tissue_limit = 0.0; | |
| 1395 | |
| 1396 for (ci=0;ci<16;ci++) | |
| 1397 { | |
| 1398 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1399 | |
| 1400 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
| 1401 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
| 1402 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1403 |
| 192 | 1404 // Apply the Eric Baker's varying gradient factor correction. |
| 1405 // Note: the correction factor depends both on GF and b, | |
| 1406 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1407 // so that can change who is the leading gas... | |
| 1408 // Note: Also depends of the GF. So the calcul is different for | |
| 1409 // GF_low, current GF, or GF_high... | |
| 1410 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1411 // hence what would happend at surface, | |
| 1412 // hence at GF_high. | |
| 1413 if( char_I_deco_model == 1 ) | |
| 1414 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1415 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1416 else | |
| 1417 p = (p - var_N2_a) * var_N2_b; | |
| 1418 if( p < 0 ) p = 0; | |
| 1419 | |
| 1420 pres_tissue_limit[ci] = p; | |
| 1421 if( p > calc_lead_tissue_limit ) | |
| 1422 { | |
| 1423 char_O_gtissue_no = ci; | |
| 1424 calc_lead_tissue_limit = p; | |
| 1425 } | |
| 1426 } | |
| 197 | 1427 |
| 1428 assert( char_O_gtissue_no < 16 ); | |
| 1429 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1430 } |
| 1431 | |
| 1432 ////////////////////////////////////////////////////////////////////////////// | |
| 1433 // calc_nullzeit | |
| 1434 // | |
| 1435 // calculates the remaining bottom time | |
| 1436 // | |
| 1437 // unchanged in v.101 | |
| 1438 // | |
| 1439 static void calc_nullzeit(void) | |
| 1440 { | |
| 203 | 1441 overlay unsigned char loop; |
| 200 | 1442 update_startvalues(); |
| 167 | 1443 |
| 116 | 1444 char_O_nullzeit = 0; |
| 167 | 1445 for(loop = 1; loop <= 17; loop++) |
| 116 | 1446 { |
| 1447 backup_sim_pres_tissue(); | |
| 197 | 1448 sim_tissue(2); // 10 min. |
| 192 | 1449 sim_limit(GF_high); |
| 167 | 1450 |
| 192 | 1451 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1452 { |
| 1453 restore_sim_pres_tissue(); | |
| 1454 break; | |
| 1455 } | |
| 1456 // Validate once we know its good. | |
| 1457 char_O_nullzeit += 10; | |
| 167 | 1458 } |
| 1459 | |
| 116 | 1460 if (char_O_nullzeit < 60) |
| 1461 { | |
| 167 | 1462 for(loop=1; loop <= 10; loop++) |
| 116 | 1463 { |
| 197 | 1464 sim_tissue(1); // 1 min |
| 192 | 1465 sim_limit(GF_high); |
| 1466 | |
| 1467 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1468 break; |
| 1469 char_O_nullzeit++; | |
| 167 | 1470 } |
| 185 | 1471 } |
| 1472 } | |
| 116 | 1473 |
| 167 | 1474 ////////////////////////////////////////////////////////////////////////////// |
| 1475 // backup_sim_pres_tissue | |
| 1476 // | |
| 116 | 1477 void backup_sim_pres_tissue(void) |
| 1478 { | |
| 167 | 1479 overlay unsigned char x; |
| 1480 | |
| 1481 for(x = 0; x<32; x++) | |
| 126 | 1482 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1483 } |
| 116 | 1484 |
| 167 | 1485 ////////////////////////////////////////////////////////////////////////////// |
| 1486 // restore_sim_pres_tissue | |
| 1487 // | |
| 116 | 1488 void restore_sim_pres_tissue(void) |
| 1489 { | |
| 167 | 1490 overlay unsigned char x; |
| 1491 | |
| 1492 for(x = 0; x<32; x++) | |
| 126 | 1493 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1494 } |
| 116 | 1495 |
| 167 | 1496 ////////////////////////////////////////////////////////////////////////////// |
| 1497 // calc_ascenttime | |
| 1498 // | |
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1499 static void calc_ascenttime(void) |
| 116 | 1500 { |
| 126 | 1501 if (pres_respiration > pres_surface) |
| 1502 { | |
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1503 overlay unsigned char x; |
| 168 | 1504 |
| 192 | 1505 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
| 1506 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
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1507 if (ascent < 0.0) |
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1508 ascent = 0.0; |
| 203 | 1509 int_O_ascenttime = (unsigned short)(ascent + 0.99); |
| 168 | 1510 |
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1511 for(x=0; x<32 && internal_deco_depth[x]; x++) |
| 203 | 1512 int_O_ascenttime += (unsigned short)internal_deco_time[x]; |
| 126 | 1513 } |
| 1514 else | |
| 168 | 1515 int_O_ascenttime = 0; |
| 167 | 1516 } |
| 116 | 1517 |
| 167 | 1518 ////////////////////////////////////////////////////////////////////////////// |
| 1519 // update_startvalues | |
| 1520 // | |
| 116 | 1521 // updated in v.102 |
| 167 | 1522 // |
| 116 | 1523 void update_startvalues(void) |
| 1524 { | |
| 167 | 1525 overlay unsigned char x; |
| 116 | 1526 |
| 201 | 1527 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1528 for (x = 0;x<16;x++) |
| 1529 { | |
| 1530 sim_pres_tissue[x] = pres_tissue[x]; | |
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1531 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1532 sim_pres_tissue_limit[x] = pres_tissue_limit[x]; |
| 1533 } | |
| 197 | 1534 |
| 201 | 1535 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1536 sim_lead_tissue_limit = 0.0; |
| 1537 sim_lead_tissue_no = 255; | |
| 167 | 1538 } |
| 116 | 1539 |
| 167 | 1540 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1541 // sim_tissue |
| 167 | 1542 // |
| 116 | 1543 // optimized in v.101 |
| 167 | 1544 // |
| 1545 // Function very simular to calc_tissue, but: | |
| 1546 // + Use a 1min or 10min period. | |
| 1547 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1548 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1549 { |
| 192 | 1550 for(ci=0; ci<16; ci++) |
| 126 | 1551 { |
| 184 | 1552 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1553 |
| 126 | 1554 // N2 |
| 200 | 1555 temp_tissue = (ppO2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1556 temp_tissue_safety(); |
| 167 | 1557 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1558 |
| 1559 // He | |
| 200 | 1560 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1561 temp_tissue_safety(); |
| 167 | 1562 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1563 } |
| 167 | 1564 } |
| 116 | 1565 |
| 167 | 1566 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1567 // sim_limit() |
| 1568 // | |
| 1569 // New in v.111 | |
| 1570 // | |
| 1571 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1572 // different depth, because it depends on current gradient factor. | |
| 167 | 1573 // |
| 192 | 1574 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1575 { |
| 192 | 1576 sim_lead_tissue_limit = 0.0; |
| 1577 sim_lead_tissue_no = 255; | |
| 1578 | |
| 1579 for(ci=0; ci<16; ci++) | |
| 1580 { | |
| 1581 overlay float p = sim_pres_tissue[ci] + (sim_pres_tissue+16)[ci]; | |
| 1582 | |
| 1583 read_buhlmann_coefficients(-1); | |
| 1584 var_N2_a = (var_N2_a * sim_pres_tissue[ci] + var_He_a * (sim_pres_tissue+16)[ci]) / p; | |
| 1585 var_N2_b = (var_N2_b * sim_pres_tissue[ci] + var_He_b * (sim_pres_tissue+16)[ci]) / p; | |
| 1586 | |
| 1587 // Apply the Eric Baker's varying gradient factor correction. | |
| 1588 // Note: the correction factor depends both on GF and b, | |
| 1589 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1590 // so that can change who is the leading gas... | |
| 1591 // Note: Also depends of the GF_current... | |
| 1592 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1593 // hence what would happend at surface, | |
| 1594 // hence at GF_high. | |
| 1595 if( char_I_deco_model == 1 ) | |
| 1596 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1597 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1598 else | |
| 1599 p = (p - var_N2_a) * var_N2_b; | |
| 1600 if( p < 0 ) p = 0; | |
| 1601 | |
| 1602 sim_pres_tissue_limit[ci] = p; | |
| 1603 if( p > sim_lead_tissue_limit ) | |
| 1604 { | |
| 1605 sim_lead_tissue_no = ci; | |
| 1606 sim_lead_tissue_limit = p; | |
| 1607 } | |
| 1608 } // for ci | |
| 197 | 1609 |
| 1610 assert( sim_lead_tissue_no < 16 ); | |
| 1611 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0); | |
| 167 | 1612 } |
| 116 | 1613 |
| 167 | 1614 ////////////////////////////////////////////////////////////////////////////// |
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1615 // clear_deco_table |
| 167 | 1616 // |
| 1617 // unchanged in v.101 | |
| 1618 // | |
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1619 static void clear_deco_table(void) |
| 116 | 1620 { |
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1621 overlay unsigned char x; |
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1622 |
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1623 for(x=0; x<32; ++x) |
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1624 { |
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1625 internal_deco_time [x] = 0; |
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1626 internal_deco_depth[x] = 0; |
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1627 } |
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1628 } |
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1629 |
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1630 ////////////////////////////////////////////////////////////////////////////// |
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1631 // update_deco_table |
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1632 // |
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1633 // Add 1 min to current stop. |
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1634 // |
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1635 // Inputs: |
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1636 // temp_depth_limit = stop's depth, in meters. |
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1637 // In/Out: |
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1638 // internal_deco_depth[] : depth (in meters) of each stops. |
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1639 // internal_deco_time [] : time (in minutes) of each stops. |
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1640 // |
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1641 static void update_deco_table() |
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1642 { |
| 192 | 1643 overlay unsigned char x; |
| 200 | 1644 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1645 |
| 192 | 1646 for(x=0; x<32; ++x) |
| 1647 { | |
| 200 | 1648 if( internal_deco_depth[x] == temp_depth_limit ) |
| 192 | 1649 { |
| 1650 // Do not overflow (max 255') | |
| 1651 if( internal_deco_time[x] < 255 ) | |
| 1652 { | |
| 1653 internal_deco_time[x]++; | |
| 1654 return; | |
| 1655 } | |
| 1656 // But store extra in the next stop... | |
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1657 } |
| 192 | 1658 |
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1659 if( internal_deco_depth[x] == 0 ) |
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1660 { |
| 192 | 1661 internal_deco_depth[x] = temp_depth_limit; |
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1662 internal_deco_time[x] = 1; |
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1663 return; |
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1664 } |
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1665 } |
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1666 |
| 192 | 1667 // Can't store stops at more than 96m. |
| 1668 // Or stops at less that 3m too. | |
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1669 // Just do nothing with that... |
| 167 | 1670 } |
| 116 | 1671 |
| 167 | 1672 ////////////////////////////////////////////////////////////////////////////// |
| 1673 // calc_gradient_factor | |
| 1674 // | |
| 165 | 1675 // optimized in v.101 (var_N2_a) |
| 116 | 1676 // new code in v.102 |
| 167 | 1677 // |
| 1678 static void calc_gradient_factor(void) | |
| 116 | 1679 { |
| 197 | 1680 overlay float gf; |
| 1681 assert( char_O_gtissue_no < 16 ); | |
| 1682 | |
| 116 | 1683 // tissue > respiration (entsaettigungsvorgang) |
| 1684 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1685 // dh. 0% = respiration == tissue | |
| 1686 // dh. 100% = respiration == limit | |
| 197 | 1687 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
| 1688 if( temp_tissue < pres_respiration ) | |
| 1689 gf = 0.0; | |
| 1690 else | |
| 1691 { | |
| 1692 gf = (temp_tissue - pres_respiration) | |
| 1693 / (temp_tissue - pres_tissue_limit[char_O_gtissue_no]) | |
| 1694 * 100.0; | |
| 1695 if( gf > 255.0 ) gf = 255.0; | |
| 1696 if( gf < 0.0 ) gf = 0.0; | |
| 1697 } | |
| 1698 char_O_gradient_factor = (unsigned char)gf; | |
| 116 | 1699 |
| 1700 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1701 { | |
| 197 | 1702 overlay float rgf; |
| 1703 | |
| 1704 if( low_depth == 0 ) | |
| 1705 rgf = GF_high; | |
| 1706 else | |
| 1707 { | |
| 1708 overlay float temp1 = low_depth * 0.09995; | |
| 1709 overlay float temp2 = pres_respiration - pres_surface; | |
| 186 | 1710 |
| 197 | 1711 if (temp2 <= 0) |
| 1712 rgf = GF_high; | |
| 1713 else if (temp2 >= temp1) | |
| 1714 rgf = GF_low; | |
| 1715 else | |
| 1716 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1717 } | |
| 186 | 1718 |
| 197 | 1719 rgf = gf / rgf; // gf is already in percent |
| 1720 if( rgf < 0.0 ) rgf = 0.0; | |
| 1721 if( rgf > 255.0 ) rgf = 255.0; | |
| 1722 char_O_relative_gradient_GF = (unsigned char)rgf; | |
| 116 | 1723 } // calc relative gradient factor |
| 1724 else | |
| 1725 { | |
| 186 | 1726 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1727 } |
| 167 | 1728 } |
| 116 | 1729 |
| 167 | 1730 ////////////////////////////////////////////////////////////////////////////// |
| 1731 // deco_calc_desaturation_time | |
| 1732 // | |
| 116 | 1733 // FIXED N2_ratio |
| 1734 // unchanged in v.101 | |
| 167 | 1735 // |
| 116 | 1736 void deco_calc_desaturation_time(void) |
| 1737 { | |
| 203 | 1738 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 200 | 1739 overlay float temp1; |
| 197 | 1740 overlay float temp2; |
| 1741 overlay float temp3; | |
| 1742 overlay float temp4; | |
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1743 RESET_C_STACK |
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1744 |
| 126 | 1745 N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann |
| 1746 pres_surface = (float)int_I_pres_surface / 1000.0; | |
| 200 | 1747 ppO2 = N2_ratio * (pres_surface - ppWVapour); |
| 126 | 1748 int_O_desaturation_time = 0; |
| 1749 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 1750 | |
| 1751 for (ci=0;ci<16;ci++) | |
| 1752 { | |
| 200 | 1753 overlay float var_N2_halftime = buhlmann_ht[ci]; |
| 1754 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; | |
| 116 | 1755 |
| 126 | 1756 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1757 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1758 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1759 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1760 // N2 | |
| 200 | 1761 temp1 = 1.05 * ppO2; |
| 126 | 1762 temp1 = temp1 - pres_tissue[ci]; |
| 200 | 1763 temp2 = ppO2 - pres_tissue[ci]; |
| 126 | 1764 if (temp2 >= 0.0) |
| 1765 { | |
| 1766 temp1 = 0; | |
| 1767 temp2 = 0; | |
| 1768 } | |
| 1769 else | |
| 1770 temp1 = temp1 / temp2; | |
| 1771 if (temp1 > 0.0) | |
| 1772 { | |
| 1773 temp1 = log(1.0 - temp1); | |
| 1774 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1775 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1776 // minus because log is negative | |
| 165 | 1777 temp2 = var_N2_halftime * temp1 / float_desaturation_multiplier; // time necessary (in minutes ) for complete desaturation (see comment about 10 percent) , new in v.101: float_desaturation_multiplier |
| 126 | 1778 } |
| 1779 else | |
| 1780 { | |
| 1781 temp1 = 0; | |
| 1782 temp2 = 0; | |
| 1783 } | |
| 116 | 1784 |
| 126 | 1785 // He |
| 167 | 1786 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1787 if (temp3 >= 0.0) |
| 1788 { | |
| 1789 temp3 = 0; | |
| 1790 temp4 = 0; | |
| 1791 } | |
| 1792 else | |
| 167 | 1793 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 126 | 1794 if (temp3 > 0.0) |
| 1795 { | |
| 1796 temp3 = log(1.0 - temp3); | |
| 1797 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1798 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1799 // minus because log is negative | |
| 165 | 1800 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1801 } |
| 1802 else | |
| 1803 { | |
| 1804 temp3 = 0; | |
| 1805 temp4 = 0; | |
| 1806 } | |
| 116 | 1807 |
| 126 | 1808 // saturation_time (for flight) |
| 1809 if (temp4 > temp2) | |
| 203 | 1810 desat_time = (unsigned short)temp4; |
| 126 | 1811 else |
| 203 | 1812 desat_time = (unsigned short)temp2; |
| 167 | 1813 if(desat_time > int_O_desaturation_time) |
| 1814 int_O_desaturation_time = desat_time; | |
| 116 | 1815 |
| 126 | 1816 // N2 saturation in multiples of halftime for display purposes |
| 1817 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1818 temp2 = temp2 + 80.0; // set center | |
| 1819 if (temp2 < 0.0) | |
| 1820 temp2 = 0.0; | |
| 1821 if (temp2 > 255.0) | |
| 1822 temp2 = 255.0; | |
| 1823 char_O_tissue_saturation[ci] = (char)temp2; | |
| 1824 // He saturation in multiples of halftime for display purposes | |
| 1825 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1826 temp4 = temp4 + 80.0; // set center | |
| 1827 if (temp4 < 0.0) | |
| 1828 temp4 = 0.0; | |
| 1829 if (temp4 > 255.0) | |
| 1830 temp4 = 255.0; | |
| 167 | 1831 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1832 } // for |
| 167 | 1833 } |
| 116 | 1834 |
| 167 | 1835 ////////////////////////////////////////////////////////////////////////////// |
| 1836 // calc_wo_deco_step_1_min | |
| 1837 // | |
| 116 | 1838 // FIXED N2 Ratio |
| 1839 // optimized in v.101 (...saturation_multiplier) | |
| 1840 // desaturation slowed down to 70,42% | |
| 167 | 1841 // |
| 1842 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1843 { |
| 1844 if(flag_in_divemode) | |
| 1845 { | |
| 1846 flag_in_divemode = 0; | |
| 1847 set_dbg_end_of_dive(); | |
| 1848 } | |
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1849 |
| 126 | 1850 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 1851 pres_respiration = (float)int_I_pres_respiration / 1000.0; // assembler code uses different digit system | |
| 192 | 1852 pres_surface = (float)int_I_pres_surface / 1000.0; // the b"uhlmann formula using pres_surface does not use the N2_ratio |
| 200 | 1853 ppO2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body |
| 1854 ppHe = 0.0; | |
| 126 | 1855 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 1856 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 1857 |
| 192 | 1858 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 1859 |
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1860 clear_deco_table(); |
| 200 | 1861 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 1862 char_O_nullzeit = 0; |
| 168 | 1863 int_O_ascenttime = 0; |
| 126 | 1864 calc_gradient_factor(); |
| 167 | 1865 } |
| 126 | 1866 |
| 167 | 1867 ////////////////////////////////////////////////////////////////////////////// |
| 1868 ////////////////////////////////////////////////////////////////////////////// | |
| 1869 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1870 ////////////////////////////////////////////////////////////////////////////// | |
| 1871 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1872 |
| 184 | 1873 #ifndef CROSS_COMPILE |
| 116 | 1874 void deco_hash(void) |
| 1875 { | |
| 167 | 1876 overlay unsigned char md_i, md_j; // Loop index. |
| 1877 overlay unsigned char md_t; | |
| 1878 overlay unsigned char md_buffer[16]; | |
| 1879 overlay unsigned char md_temp; | |
| 203 | 1880 overlay unsigned short md_pointer; |
| 167 | 1881 |
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1882 RESET_C_STACK |
| 126 | 1883 |
| 1884 // init | |
| 164 | 1885 for(md_i=0;md_i<16;md_i++) |
| 126 | 1886 { |
| 1887 md_state[md_i] = 0; | |
| 164 | 1888 char_O_hash[md_i] = 0; |
| 126 | 1889 } // for md_i 16 |
| 116 | 1890 |
| 126 | 1891 _asm |
| 167 | 1892 movlw 0x01 // md_pi address. |
| 1893 movwf TBLPTRU,0 | |
| 1894 movlw 0x7E | |
| 1895 movwf TBLPTRH,0 | |
| 1896 movlw 0x00 | |
| 1897 movwf TBLPTRL,0 | |
| 126 | 1898 _endasm; |
| 165 | 1899 md_i = 0; |
| 1900 do { | |
| 126 | 1901 _asm |
| 1902 TBLRDPOSTINC | |
| 1903 movff TABLAT,md_temp | |
| 1904 _endasm | |
| 165 | 1905 md_pi_subst[md_i++] = md_temp; |
| 1906 } while( md_i != 0 ); | |
| 1907 | |
| 126 | 1908 _asm |
| 167 | 1909 movlw 0x00 |
| 1910 movwf TBLPTRU,0 | |
| 1911 movlw 0x00 | |
| 1912 movwf TBLPTRH,0 | |
| 1913 movlw 0x00 | |
| 1914 movwf TBLPTRL,0 | |
| 126 | 1915 _endasm |
| 167 | 1916 |
| 126 | 1917 // cycle buffers |
| 1918 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 1919 { | |
| 1920 md_t = 0; | |
| 1921 for (md_i=0;md_i<16;md_i++) | |
| 1922 { | |
| 1923 if(md_pointer == 9) | |
| 164 | 1924 md_temp = char_O_hash[md_i]; |
| 126 | 1925 else |
| 1926 { | |
| 1927 _asm | |
| 167 | 1928 TBLRDPOSTINC |
| 1929 movff TABLAT,md_temp | |
| 126 | 1930 _endasm |
| 1931 } // else | |
| 167 | 1932 |
| 1933 md_buffer[md_i] = md_temp; | |
| 186 | 1934 md_state[md_i+16] = md_temp; |
| 1935 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 1936 } // for md_i 16 |
| 1937 | |
| 1938 for (md_i=0;md_i<18;md_i++) | |
| 1939 { | |
| 1940 for (md_j=0;md_j<48;md_j++) | |
| 1941 { | |
| 167 | 1942 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 1943 md_t = md_state[md_j]; |
| 1944 } // for md_j 48 | |
| 1945 md_t = (unsigned char)(md_t+1); | |
| 1946 } // for md_i 18 | |
| 164 | 1947 md_t = char_O_hash[15]; |
| 126 | 1948 |
| 1949 for (md_i=0;md_i<16;md_i++) | |
| 1950 { | |
| 167 | 1951 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 1952 md_t = char_O_hash[md_i]; |
| 126 | 1953 } // for md_i 16 |
| 1954 } // for md_pointer | |
| 116 | 1955 } // void deco_hash(void) |
| 184 | 1956 #endif |
| 116 | 1957 |
| 167 | 1958 ////////////////////////////////////////////////////////////////////////////// |
| 1959 // deco_clear_CNS_fraction | |
| 1960 // | |
| 116 | 1961 // new in v.101 |
| 167 | 1962 // |
| 116 | 1963 void deco_clear_CNS_fraction(void) |
| 1964 { | |
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1965 RESET_C_STACK |
| 126 | 1966 CNS_fraction = 0.0; |
| 1967 char_O_CNS_fraction = 0; | |
| 167 | 1968 } |
| 116 | 1969 |
| 167 | 1970 ////////////////////////////////////////////////////////////////////////////// |
| 1971 // deco_calc_CNS_fraction | |
| 1972 // | |
| 116 | 1973 // new in v.101 |
| 1974 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 1975 // |
| 116 | 1976 // Input: char_I_actual_ppO2 |
| 1977 // Output: char_O_CNS_fraction | |
| 1978 // Uses and Updates: CNS_fraction | |
| 1979 // Uses: acutal_ppO2 | |
| 167 | 1980 // |
| 116 | 1981 void deco_calc_CNS_fraction(void) |
| 1982 { | |
| 167 | 1983 overlay float actual_ppO2; |
| 126 | 1984 RESET_C_STACK |
| 167 | 1985 |
| 126 | 1986 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 1987 |
| 126 | 1988 if (char_I_actual_ppO2 < 50) |
| 1989 CNS_fraction = CNS_fraction;// no changes | |
| 1990 else if (char_I_actual_ppO2 < 60) | |
| 1991 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 1992 else if (char_I_actual_ppO2 < 70) | |
| 1993 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 1994 else if (char_I_actual_ppO2 < 80) | |
| 1995 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 1996 else if (char_I_actual_ppO2 < 90) | |
| 1997 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 1998 else if (char_I_actual_ppO2 < 110) | |
| 1999 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 2000 else if (char_I_actual_ppO2 < 150) | |
| 2001 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 2002 else if (char_I_actual_ppO2 < 160) | |
| 2003 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 2004 else if (char_I_actual_ppO2 < 165) | |
| 2005 CNS_fraction = 0.000755 + CNS_fraction; // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity... Formula (A1) based on value for 1.55 and c=20 | |
| 2006 else if (char_I_actual_ppO2 < 170) | |
| 2007 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 2008 else if (char_I_actual_ppO2 < 175) | |
| 2009 CNS_fraction = 0.00136 + CNS_fraction; | |
| 2010 else if (char_I_actual_ppO2 < 180) | |
| 2011 CNS_fraction = 0.00180 + CNS_fraction; | |
| 2012 else if (char_I_actual_ppO2 < 185) | |
| 2013 CNS_fraction = 0.00237 + CNS_fraction; | |
| 2014 else if (char_I_actual_ppO2 < 190) | |
| 2015 CNS_fraction = 0.00310 + CNS_fraction; | |
| 2016 else if (char_I_actual_ppO2 < 195) | |
| 2017 CNS_fraction = 0.00401 + CNS_fraction; | |
| 2018 else if (char_I_actual_ppO2 < 200) | |
| 2019 CNS_fraction = 0.00517 + CNS_fraction; | |
| 2020 else if (char_I_actual_ppO2 < 230) | |
| 2021 CNS_fraction = 0.0209 + CNS_fraction; | |
| 2022 else | |
| 2023 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 2024 |
| 126 | 2025 if (CNS_fraction > 2.5) |
| 2026 CNS_fraction = 2.5; | |
| 2027 if (CNS_fraction < 0.0) | |
| 2028 CNS_fraction = 0.0; | |
| 2029 | |
| 2030 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2031 } |
| 116 | 2032 |
| 167 | 2033 ////////////////////////////////////////////////////////////////////////////// |
| 2034 // deco_calc_CNS_decrease_15min | |
| 2035 // | |
| 116 | 2036 // new in v.101 |
| 167 | 2037 // |
| 116 | 2038 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2039 // (Used in sleepmode, for low battery mode). |
| 167 | 2040 // |
| 116 | 2041 // Output: char_O_CNS_fraction |
| 2042 // Uses and Updates: CNS_fraction | |
| 167 | 2043 // |
| 116 | 2044 void deco_calc_CNS_decrease_15min(void) |
| 2045 { | |
|
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2046 RESET_C_STACK |
| 126 | 2047 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2048 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2049 } | |
| 116 | 2050 |
| 167 | 2051 ////////////////////////////////////////////////////////////////////////////// |
| 2052 // deco_calc_percentage | |
| 2053 // | |
| 116 | 2054 // new in v.101 |
| 167 | 2055 // |
| 116 | 2056 // calculates int_I_temp * char_I_temp / 100 |
| 2057 // output is int_I_temp | |
| 200 | 2058 // |
| 2059 // Used to compute NoFly remaining time. | |
| 116 | 2060 |
| 2061 void deco_calc_percentage(void) | |
| 2062 { | |
|
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2063 RESET_C_STACK |
| 203 | 2064 int_I_temp = (short)(int_I_temp * (char_I_temp / 100.0)); |
| 116 | 2065 } |
| 2066 | |
| 167 | 2067 ////////////////////////////////////////////////////////////////////////////// |
| 2068 | |
| 116 | 2069 void deco_push_tissues_to_vault(void) |
| 2070 { | |
| 167 | 2071 overlay unsigned char x; |
|
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2072 RESET_C_STACK |
| 167 | 2073 |
| 116 | 2074 cns_vault = CNS_fraction; |
| 167 | 2075 for (x=0;x<32;x++) |
| 2076 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2077 } |
| 167 | 2078 |
| 116 | 2079 void deco_pull_tissues_from_vault(void) |
| 2080 { | |
| 167 | 2081 overlay unsigned char x; |
|
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2082 RESET_C_STACK |
| 167 | 2083 |
| 116 | 2084 CNS_fraction = cns_vault; |
| 167 | 2085 for (x=0;x<32;x++) |
| 2086 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2087 } |
| 2088 | |
| 167 | 2089 ////////////////////////////////////////////////////////////////////////////// |
| 2090 // | |
| 184 | 2091 #ifndef CROSS_COMPILE |
| 2092 void main() {} | |
| 2093 #endif |