Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 197:f15e804ff67f
Gas switch delay
+ New CF#55 for additional delay in decoplan for gas switch.
+ BUGFIX compute integration at full ascent, not half (or the formula is wrong).
+ BUGFIX minor typo in 2sec exposition factors.
| author | JeanDo |
|---|---|
| date | Sun, 13 Feb 2011 17:27:43 +0100 |
| parents | 652e17b6267a |
| children | 0a3ca358c684 |
| 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(). |
|
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68 // 2011/01/24: [jDG] Make ascenttime an int. 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: | |
| 116 | 78 // B"uhlmann, Albert: Tauchmedizin; 4. Auflage; |
| 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 | |
| 167 | 99 // ************************* |
| 100 // ** P R O T O T Y P E S ** | |
| 101 // ************************* | |
| 102 | |
| 103 static void calc_hauptroutine(void); | |
| 104 static void calc_nullzeit(void); | |
| 105 | |
| 192 | 106 static void calc_tissue(PARAMETER unsigned char period); |
| 107 static void calc_limit(PARAMETER float GF_current); | |
| 108 | |
| 109 static void calc_wo_deco_step_2s(void); | |
| 167 | 110 static void clear_tissue(void); |
| 111 static void calc_ascenttime(void); | |
| 112 static void update_startvalues(void); | |
|
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113 static void clear_deco_table(void); |
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114 static void update_deco_table(void); |
| 192 | 115 |
| 116 static void backup_sim_pres_tissue(void); | |
| 117 static void restore_sim_pres_tissue(void); | |
| 118 static void sim_tissue(PARAMETER unsigned char period); | |
| 119 static void sim_limit(PARAMETER float GF_current); | |
| 167 | 120 static void calc_gradient_factor(void); |
| 121 static void calc_wo_deco_step_1_min(void); | |
| 122 | |
| 123 static void calc_hauptroutine_data_input(void); | |
| 124 static void calc_hauptroutine_update_tissues(void); | |
| 125 static void calc_hauptroutine_calc_deco(void); | |
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126 static void sim_ascent_to_first_stop(void); |
| 167 | 127 |
| 171 | 128 static void calc_nextdecodepth(void); |
| 116 | 129 |
| 163 | 130 //---- Bank 3 parameters ----------------------------------------------------- |
| 131 #pragma udata bank4=0x400 | |
| 116 | 132 |
| 192 | 133 static unsigned char low_depth; |
| 116 | 134 static float temp_limit; |
| 135 static float GF_low; | |
| 136 static float GF_high; | |
| 137 static float GF_delta; | |
| 192 | 138 static unsigned char low_depth; // Depth of deepest stop |
| 139 static float locked_GF_step; // GF_delta / low_depth | |
| 140 | |
| 141 static unsigned char temp_depth_limit; | |
| 171 | 142 |
| 192 | 143 // Simulation context: used to predict ascent. |
| 144 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 145 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 146 |
| 192 | 147 // Real context: what we are doing now. |
| 148 static float calc_lead_tissue_limit; // | |
| 116 | 149 |
|
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150 static unsigned char internal_deco_time[32]; |
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151 static unsigned char internal_deco_depth[32]; |
| 116 | 152 |
| 153 static float cns_vault; | |
| 154 static float pres_tissue_vault[32]; | |
| 155 | |
| 163 | 156 //---- Bank 5 parameters ----------------------------------------------------- |
| 157 #pragma udata bank5=0x500 | |
| 158 | |
| 167 | 159 static unsigned char ci; |
| 116 | 160 static float pres_respiration; |
| 161 static float pres_surface; | |
| 162 static float temp1; | |
| 163 static float temp_deco; | |
| 164 static float temp_atem; | |
| 165 static float temp2_atem; | |
| 166 static float temp_tissue; | |
| 167 static float N2_ratio; | |
| 168 static float He_ratio; | |
| 165 | 169 static float var_N2_a; |
| 170 static float var_N2_b; | |
| 171 static float var_He_a; | |
| 172 static float var_He_b; | |
| 173 static float var_N2_e; | |
| 174 static float var_He_e; | |
| 175 static float var_N2_halftime; | |
| 176 static float var_He_halftime; | |
| 116 | 177 |
| 164 | 178 static float pres_diluent; // new in v.101 |
| 179 static float deco_diluent; // new in v.101 | |
| 180 static float const_ppO2; // new in v.101 | |
| 181 static float deco_ppO2_change; // new in v.101 | |
| 182 static float deco_ppO2; // new in v.101 | |
| 116 | 183 |
| 197 | 184 static unsigned char sim_gas_last_used; // Last used gas, to detected a gas switch. |
| 185 static unsigned char sim_gas_delay; // Delay added for gas switch (count down) [min]. | |
| 167 | 186 static float calc_N2_ratio; // new in v.101 |
| 187 static float calc_He_ratio; // new in v.101 | |
| 188 static float CNS_fraction; // new in v.101 | |
| 189 static float float_saturation_multiplier; // new in v.101 | |
| 190 static float float_desaturation_multiplier; // new in v.101 | |
| 191 static float float_deco_distance; // new in v.101 | |
| 192 static char flag_in_divemode; // new in v.108 | |
| 193 | |
| 194 static float deco_gas_change1; // new in v.101 | |
| 195 static float deco_gas_change2; // new in v.109 | |
| 196 static float deco_gas_change3; // new in v.109 | |
| 197 static float deco_gas_change4; // new in v.109 | |
| 198 static float deco_gas_change5; // new in v.109 | |
| 199 | |
| 200 static float deco_N2_ratio1; // new in v.101 | |
| 201 static float deco_He_ratio1; // new in v.101 | |
| 202 | |
| 203 | |
| 163 | 204 //---- Bank 6 parameters ----------------------------------------------------- |
| 205 #pragma udata bank6=0x600 | |
| 116 | 206 |
| 197 | 207 float pres_tissue[32]; |
| 208 float pres_tissue_limit[16]; | |
| 209 float sim_pres_tissue_limit[16]; | |
| 116 | 210 |
| 163 | 211 //---- Bank 7 parameters ----------------------------------------------------- |
| 212 #pragma udata bank7=0x700 | |
| 213 | |
| 197 | 214 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
| 116 | 215 static float sim_pres_tissue_backup[32]; |
| 216 | |
| 163 | 217 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 218 #pragma udata bank8=0x800 |
| 163 | 219 |
| 116 | 220 static char md_pi_subst[256]; |
|
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221 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 222 |
| 163 | 223 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 224 #pragma udata bank9=0x900 |
| 116 | 225 |
| 163 | 226 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 227 |
| 164 | 228 // internal, dbg: |
| 167 | 229 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 230 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 231 static float DBG_pres_surface; // new in v.108 | |
| 232 static float DBG_GF_low; // new in v.108 | |
| 233 static float DBG_GF_high; // new in v.108 | |
| 234 static float DBG_const_ppO2; // new in v.108 | |
| 235 static float DBG_deco_ppO2_change; // new in v.108 | |
| 236 static float DBG_deco_ppO2; // new in v.108 | |
| 237 static float DBG_deco_N2_ratio; // new in v.108 | |
| 238 static float DBG_deco_He_ratio; // new in v.108 | |
| 239 static float DBG_deco_gas_change; // new in v.108 | |
| 240 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 241 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 242 static float DBG_float_deco_distance; // new in v.108 | |
| 243 static float DBG_deco_N2_ratio; // new in v.108 | |
| 244 static float DBG_deco_He_ratio; // new in v.108 | |
| 245 static float DBG_N2_ratio; // new in v.108 | |
| 246 static float DBG_He_ratio; // new in v.108 | |
| 247 | |
| 167 | 248 ////////////////////////////////////////////////////////////////////////////// |
| 249 ////////////////////////////////////////////////////////////////////////////// | |
| 250 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 251 ////////////////////////////////////////////////////////////////////////////// | |
| 252 ////////////////////////////////////////////////////////////////////////////// | |
| 253 // | |
| 254 // End of PROM code is 17F00, So push tables on PROM top... | |
| 255 // | |
| 256 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 257 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 258 |
| 167 | 259 // Magic table to compute the MD2 HASH |
| 260 // | |
| 261 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 116 | 262 rom const rom unsigned int md_pi[] = |
| 263 { | |
| 264 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 265 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 266 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 267 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 268 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 269 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 270 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 271 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 272 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 273 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 274 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 275 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 276 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 277 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 278 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 279 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 280 }; | |
| 281 | |
| 167 | 282 ////////////////////////////////////////////////////////////////////////////// |
| 283 ////////////////////////////////////////////////////////////////////////////// | |
| 284 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 285 ////////////////////////////////////////////////////////////////////////////// | |
| 286 ////////////////////////////////////////////////////////////////////////////// | |
| 287 // | |
| 116 | 288 // all new in v.102 |
| 289 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 290 | |
| 291 #pragma code p2_deco = 0x0C000 | |
| 292 | |
| 167 | 293 ////////////////////////////////////////////////////////////////////////////// |
| 294 // DBS - debug on start of dive | |
| 295 // | |
| 296 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 297 { |
| 167 | 298 overlay char i; // Local loop index. |
| 299 | |
| 300 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 301 int_O_DBS_bitfield = 0; |
| 302 int_O_DBS2_bitfield = 0; | |
| 303 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 304 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 305 else | |
| 306 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 307 int_O_DBG_post_bitfield = 0; | |
| 167 | 308 |
| 309 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 310 char_O_NDL_at_20mtr = 255; |
| 311 | |
| 167 | 312 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 313 DBG_N2_ratio = N2_ratio; |
| 314 DBG_He_ratio = He_ratio; | |
| 315 DBG_char_I_deco_model = char_I_deco_model; | |
| 316 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 317 DBG_pres_surface = pres_surface; | |
| 318 DBG_GF_low = GF_low; | |
| 319 DBG_GF_high = GF_high; | |
| 320 DBG_const_ppO2 = const_ppO2; | |
| 321 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 322 DBG_deco_ppO2 = deco_ppO2; | |
| 167 | 323 DBG_deco_N2_ratio = deco_N2_ratio1; |
| 324 DBG_deco_He_ratio = deco_He_ratio1; | |
| 325 DBG_deco_gas_change = deco_gas_change1; | |
| 116 | 326 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 327 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 328 DBG_float_deco_distance = float_deco_distance; | |
| 329 | |
| 167 | 330 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 331 if(char_I_deco_model) |
| 332 int_O_DBS_bitfield |= DBS_mode; | |
| 333 if(const_ppO2) | |
| 334 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 335 for(i = 16; i < 32; i++) |
| 336 if(pres_tissue[i]) | |
| 116 | 337 int_O_DBS_bitfield |= DBS_HE_sat; |
| 338 if(deco_ppO2_change) | |
| 339 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 340 if(float_saturation_multiplier < 0.99) | |
| 341 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 342 if(float_saturation_multiplier > 1.3) | |
| 343 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 344 if(GF_low < 0.19) | |
| 345 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 346 if(GF_low > 1.01) | |
| 347 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 348 if(GF_high < 0.6) | |
| 349 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 350 if(GF_high > 1.01) | |
| 351 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 352 if((N2_ratio + He_ratio) > 0.95) | |
| 353 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 354 if((N2_ratio + He_ratio) < 0.05) | |
| 355 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 356 if(float_deco_distance > 0.25) | |
| 357 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 358 if(char_I_depth_last_deco > 8) | |
| 359 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 167 | 360 if(DBG_deco_gas_change && ((deco_N2_ratio1 + deco_He_ratio1) > 0.95)) |
| 116 | 361 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 167 | 362 if(DBG_deco_gas_change && ((deco_N2_ratio1 + deco_He_ratio1) < 0.05)) |
| 116 | 363 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 364 if(pres_respiration > 3.0) | |
| 365 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 366 if(pres_surface - pres_respiration > 0.2) | |
| 367 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 368 if(pres_surface < 0.75) | |
| 369 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 370 if(pres_surface > 1.11) | |
| 371 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 372 if(float_desaturation_multiplier < 0.70) | |
| 373 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 374 if(float_desaturation_multiplier > 1.01) | |
| 375 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 376 if(GF_low > GF_high) | |
| 377 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 378 } | |
| 379 | |
| 167 | 380 ////////////////////////////////////////////////////////////////////////////// |
| 381 // DBG - set DBG to end_of_dive | |
| 382 // | |
| 383 static void set_dbg_end_of_dive(void) | |
| 116 | 384 { |
| 385 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 386 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 387 } | |
| 388 | |
| 167 | 389 ////////////////////////////////////////////////////////////////////////////// |
| 390 // DBG - NDL at first 20 m. hit | |
| 391 // | |
| 392 static void check_ndl(void) | |
| 116 | 393 { |
| 167 | 394 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 395 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 396 ) | |
| 116 | 397 { |
| 167 | 398 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 399 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 400 char_O_NDL_at_20mtr = 254; |
| 116 | 401 } |
| 402 } | |
| 403 | |
| 167 | 404 ////////////////////////////////////////////////////////////////////////////// |
| 405 // DBG - multi main during dive | |
| 406 // | |
| 184 | 407 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 408 { |
| 167 | 409 overlay unsigned int temp_DBS = 0; |
| 410 overlay char i; // Local loop index. | |
| 411 | |
| 116 | 412 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 413 temp_DBS |= DBG_c_gas; | |
| 414 if(DBG_const_ppO2 != const_ppO2) | |
| 415 temp_DBS |= DBG_c_ppO2; | |
| 167 | 416 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 417 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 418 ) | |
| 116 | 419 temp_DBS |= DBG_CdeSAT; |
| 420 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 421 temp_DBS |= DBG_C_MODE; | |
| 422 if(DBG_pres_surface != pres_surface) | |
| 423 temp_DBS |= DBG_C_SURF; | |
| 167 | 424 |
| 425 if( !DBS_HE_sat && !He_ratio) | |
| 426 for(i = 16; i < 32; i++) | |
| 427 if(pres_tissue[i]) | |
| 116 | 428 temp_DBS |= DBG_HEwoHE; |
| 167 | 429 |
| 116 | 430 if(DBG_deco_ppO2 != deco_ppO2) |
| 431 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 432 |
| 433 if( DBG_deco_gas_change != deco_gas_change1 | |
| 434 || DBG_deco_N2_ratio != deco_N2_ratio1 | |
| 435 || DBG_deco_He_ratio != deco_He_ratio1 ) | |
| 116 | 436 temp_DBS |= DBG_C_DGAS; |
| 167 | 437 |
| 116 | 438 if(DBG_float_deco_distance != float_deco_distance) |
| 439 temp_DBS |= DBG_C_DIST; | |
| 440 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 441 temp_DBS |= DBG_C_LAST; | |
| 167 | 442 if( DBG_GF_low != GF_low |
| 443 || DBG_GF_high != GF_high ) | |
| 116 | 444 temp_DBS |= DBG_C_GF; |
| 445 if(pres_respiration > 13.0) | |
| 446 temp_DBS |= DBG_PHIGH; | |
| 447 if(pres_surface - pres_respiration > 0.2) | |
| 448 temp_DBS |= DBG_PLOW; | |
| 449 if(is_post_check) | |
| 450 int_O_DBG_post_bitfield |= temp_DBS; | |
| 451 else | |
| 452 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 453 } | |
| 454 | |
| 167 | 455 ////////////////////////////////////////////////////////////////////////////// |
| 456 // DBG - prior to calc. of dive | |
| 457 // | |
| 458 static void check_pre_dbg(void) | |
| 116 | 459 { |
| 460 check_dbg(0); | |
| 461 } | |
| 462 | |
| 167 | 463 ////////////////////////////////////////////////////////////////////////////// |
| 464 // DBG - after decocalc of dive | |
| 465 // | |
| 466 static void check_post_dbg(void) | |
| 116 | 467 { |
| 468 check_dbg(1); | |
| 469 } | |
| 470 | |
| 165 | 471 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 472 ////////////////////////////////////////////////////////////////////////////// |
| 473 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 474 ////////////////////////////////////////////////////////////////////////////// | |
| 475 ////////////////////////////////////////////////////////////////////////////// | |
| 476 | |
| 184 | 477 static int read_custom_function(PARAMETER unsigned char cf) |
| 167 | 478 { |
| 184 | 479 #ifdef CROSS_COMPILE |
| 480 extern unsigned short custom_functions[]; | |
| 481 return custom_functions[cf]; | |
| 482 #else | |
| 167 | 483 extern unsigned char hi, lo; |
| 484 extern void getcustom15(); | |
| 485 _asm | |
| 486 movff cf,WREG | |
| 487 call getcustom15,0 | |
| 488 movff lo,PRODL | |
| 489 movff hi,PRODH | |
| 490 _endasm | |
| 184 | 491 #endif |
| 167 | 492 } |
| 493 | |
| 494 ////////////////////////////////////////////////////////////////////////////// | |
| 165 | 495 // read buhlmann tables for compatriment ci |
| 167 | 496 // If period == 0 : 2sec interval |
| 497 // 1 : 1 min interval | |
| 498 // 2 : 10 min interval. | |
| 184 | 499 static void read_buhlmann_coefficients(PARAMETER char period) |
| 165 | 500 { |
| 184 | 501 #ifndef CROSS_COMPILE |
| 167 | 502 // Note: we don't use far rom pointer, because the |
| 503 // 24 bits is to complex, hence we have to set | |
| 504 // the UPPER page ourself... | |
| 505 // --> Set zero if tables are moved to lower pages ! | |
| 506 _asm | |
| 507 movlw 1 | |
| 508 movwf TBLPTRU,0 | |
| 509 _endasm | |
| 184 | 510 #endif |
| 197 | 511 assert( 0 <= ci && ci < 16 ); |
| 167 | 512 |
| 165 | 513 var_N2_a = buhlmann_a[ci]; |
| 514 var_N2_b = buhlmann_b[ci]; | |
| 167 | 515 var_He_a = (buhlmann_a+16)[ci]; |
| 516 var_He_b = (buhlmann_b+16)[ci]; | |
| 517 | |
| 165 | 518 // Check reading consistency: |
| 519 if( (var_N2_a < 0.231) | |
| 520 || (var_N2_a > 1.27) | |
| 521 || (var_N2_b < 0.504) | |
| 522 || (var_N2_b > 0.966) | |
| 523 || (var_He_a < 0.510) | |
| 524 || (var_He_a > 1.75) | |
| 525 || (var_He_b < 0.423) | |
| 526 || (var_He_b > 0.927) | |
| 527 ) | |
| 528 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 167 | 529 |
| 165 | 530 // Integration intervals. |
| 167 | 531 switch(period) |
| 165 | 532 { |
| 167 | 533 case -1://---- no interval ----------------------------------------------- |
| 534 var_N2_e = var_He_e = 0.0; | |
| 535 break; | |
| 536 | |
| 165 | 537 case 0: //---- 2 sec ----------------------------------------------------- |
| 538 var_N2_e = e2secs[ci]; | |
| 167 | 539 var_He_e = (e2secs+16)[ci]; |
| 165 | 540 |
| 541 // Check reading consistency: | |
| 542 if( (var_N2_e < 0.0000363) | |
| 543 || (var_N2_e > 0.00577) | |
| 544 || (var_He_e < 0.0000961) | |
| 545 || (var_He_e > 0.150) | |
| 546 ) | |
| 547 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 548 | |
| 549 break; | |
| 550 | |
| 551 case 1: //---- 1 min ----------------------------------------------------- | |
| 552 var_N2_e = e1min[ci]; | |
| 167 | 553 var_He_e = (e1min+16)[ci]; |
| 165 | 554 |
| 555 // Check reading consistency: | |
| 556 if( (var_N2_e < 1.09E-3) | |
| 557 || (var_N2_e > 0.1592) | |
| 558 || (var_He_e < 0.00288) | |
| 559 || (var_He_e > 0.3682) | |
| 560 ) | |
| 561 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 562 | |
| 563 break; | |
| 564 | |
| 565 case 2: //---- 10 min ---------------------------------------------------- | |
| 566 var_N2_e = e10min[ci]; | |
| 167 | 567 var_He_e = (e10min+16)[ci]; |
| 165 | 568 |
| 569 // Check reading consistency: | |
| 570 if( (var_N2_e < 0.01085) | |
| 571 || (var_N2_e > 0.82323) | |
| 572 || (var_He_e < 0.02846) | |
| 573 || (var_He_e > 0.98986) | |
| 574 ) | |
| 575 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 576 | |
| 577 break; | |
| 197 | 578 |
| 579 default: | |
| 580 assert(0); // Never go there... | |
| 165 | 581 } |
| 582 } | |
| 583 | |
| 584 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 585 // calc_next_decodepth_GF |
| 165 | 586 // |
| 116 | 587 // new in v.102 |
| 165 | 588 // |
| 116 | 589 // INPUT, changing during dive: |
| 192 | 590 // low_depth |
| 167 | 591 // |
| 116 | 592 // INPUT, fixed during dive: |
| 167 | 593 // pres_surface |
| 594 // GF_delta | |
| 595 // GF_high | |
| 596 // GF_low | |
| 171 | 597 // char_I_depth_last_deco |
| 167 | 598 // float_deco_distance |
| 599 // | |
| 116 | 600 // OUTPUT |
| 171 | 601 // locked_GF_step |
| 167 | 602 // temp_deco |
| 603 // temp_depth_limt | |
| 192 | 604 // low_depth |
| 167 | 605 // |
| 171 | 606 static void calc_nextdecodepth(void) |
| 167 | 607 { |
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608 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 609 if (char_I_deco_model == 1) |
| 610 { | |
| 192 | 611 // Recompute leading gas limit, at current depth: |
| 612 overlay float depth = (temp_deco - pres_surface) / 0.09995; | |
| 613 assert( depth >= 0.0 ); | |
| 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. | |
| 624 overlay unsigned char first_stop = 3 * (int)(0.99 + (sim_lead_tissue_limit - pres_surface) / 0.29985); | |
| 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; |
| 696 temp_depth_limit = 3 * (int) (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 ////////////////////////////////////////////////////////////////////////////// |
| 845 | |
| 116 | 846 void deco_calc_without_deco(void) |
| 847 { | |
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848 RESET_C_STACK |
| 192 | 849 calc_wo_deco_step_2s(); |
| 116 | 850 deco_calc_desaturation_time(); |
| 851 } | |
| 852 | |
| 167 | 853 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 854 // Reset decompression model: |
| 855 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 856 // + Reset last stop to 0m | |
| 857 // + Reset all model output. | |
| 116 | 858 void deco_clear_tissue(void) |
| 859 { | |
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860 RESET_C_STACK |
| 116 | 861 clear_tissue(); |
| 862 } | |
| 863 | |
| 167 | 864 ////////////////////////////////////////////////////////////////////////////// |
| 865 | |
| 116 | 866 void deco_calc_wo_deco_step_1_min(void) |
| 867 { | |
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868 RESET_C_STACK |
| 116 | 869 calc_wo_deco_step_1_min(); |
| 870 char_O_deco_status = 3; // surface new in v.102 overwrites value of calc_wo_deco_step_1_min | |
| 871 deco_calc_desaturation_time(); | |
| 872 } | |
| 873 | |
| 167 | 874 ////////////////////////////////////////////////////////////////////////////// |
| 875 | |
| 116 | 876 void deco_debug(void) |
| 877 { | |
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878 RESET_C_STACK |
| 116 | 879 } |
| 880 | |
| 167 | 881 ////////////////////////////////////////////////////////////////////////////// |
| 882 // clear_tissue | |
| 883 // | |
| 165 | 884 // optimized in v.101 (var_N2_a) |
| 167 | 885 // |
| 886 // preload tissues with standard pressure for the given ambient pressure. | |
| 887 // Note: fixed N2_ratio for standard air. | |
| 116 | 888 |
| 167 | 889 static void clear_tissue(void) |
| 116 | 890 { |
| 891 flag_in_divemode = 0; | |
| 892 int_O_DBS_bitfield = 0; | |
| 893 int_O_DBS2_bitfield = 0; | |
| 894 int_O_DBG_pre_bitfield = 0; | |
| 895 int_O_DBG_post_bitfield = 0; | |
| 896 char_O_NDL_at_20mtr = 255; | |
| 897 | |
| 167 | 898 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 899 N2_ratio = 0.7902; | |
| 126 | 900 pres_respiration = (float)int_I_pres_respiration / 1000.0; |
| 164 | 901 |
| 167 | 902 for(ci=0; ci<16; ci++) |
| 126 | 903 { |
| 197 | 904 // cycle through the 16 Bühlmann tissues |
| 165 | 905 overlay float p = N2_ratio * (pres_respiration - 0.0627); |
| 164 | 906 pres_tissue[ci] = p; |
| 197 | 907 |
| 184 | 908 read_buhlmann_coefficients(-1); |
| 165 | 909 |
| 910 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 911 if( p < 0.0 ) |
| 912 p = 0.0; | |
| 913 pres_tissue_limit[ci] = p; | |
| 914 | |
| 197 | 915 // cycle through the 16 Bühlmann tissues for Helium |
| 167 | 916 (pres_tissue+16)[ci] = 0.0; |
| 126 | 917 } // for 0 to 16 |
| 116 | 918 |
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919 clear_deco_table(); |
| 126 | 920 char_O_deco_status = 0; |
| 921 char_O_nullzeit = 0; | |
| 168 | 922 int_O_ascenttime = 0; |
| 126 | 923 char_O_gradient_factor = 0; |
| 924 char_O_relative_gradient_GF = 0; | |
| 197 | 925 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 926 } |
| 116 | 927 |
| 167 | 928 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 929 // calc_wo_deco_step_2s |
| 167 | 930 // |
| 116 | 931 // optimized in v.101 (float_..saturation_multiplier) |
| 167 | 932 // |
| 933 // Note: fixed N2_ratio for standard air. | |
| 116 | 934 |
| 192 | 935 static void calc_wo_deco_step_2s(void) |
| 116 | 936 { |
| 167 | 937 N2_ratio = 0.7902; // Sum as stated in b"uhlmann |
| 126 | 938 pres_respiration = (float)int_I_pres_respiration / 1000.0; // assembler code uses different digit system |
| 192 | 939 pres_surface = (float)int_I_pres_surface / 1000.0; // the b"uhlmann formula using pres_surface does apply to the pressure without any inert ratio |
| 126 | 940 temp_atem = N2_ratio * (pres_respiration - 0.0627); // 0.0627 is the extra pressure in the body |
| 941 temp2_atem = 0.0; | |
| 197 | 942 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; |
| 943 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 126 | 944 |
| 192 | 945 calc_tissue(0); // update the pressure in the 32 tissues in accordance with the new ambient pressure for 2 seconds. |
| 126 | 946 |
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947 clear_deco_table(); |
| 126 | 948 char_O_deco_status = 0; |
| 949 char_O_nullzeit = 0; | |
| 168 | 950 int_O_ascenttime = 0; |
| 126 | 951 calc_gradient_factor(); |
| 167 | 952 } |
| 116 | 953 |
| 167 | 954 ////////////////////////////////////////////////////////////////////////////// |
| 955 // calc_hauptroutine | |
| 956 // | |
| 957 // this is the major code in dive mode calculates: | |
| 116 | 958 // the tissues, |
| 167 | 959 // the bottom time, |
| 960 // and simulates the ascend with all deco stops. | |
| 171 | 961 // |
| 962 // The deco_state sequence is : | |
| 963 // 3 (at surface) | |
| 964 // +---> 0 : calc nullzeit | |
| 965 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 966 // | +-> 1 : simulate up to 16min of stops. | |
| 967 // | +------< not finished | |
| 968 // +--------< finish | |
| 969 // | |
| 167 | 970 static void calc_hauptroutine(void) |
| 116 | 971 { |
| 186 | 972 static float backup_GF_step; |
| 192 | 973 static unsigned char backup_low_depth; |
| 186 | 974 |
| 116 | 975 calc_hauptroutine_data_input(); |
| 976 | |
| 977 if(!flag_in_divemode) | |
| 978 { | |
| 979 flag_in_divemode = 1; | |
| 980 create_dbs_set_dbg_and_ndl20mtr(); | |
| 981 } | |
| 982 else | |
| 983 check_pre_dbg(); | |
| 984 | |
| 985 calc_hauptroutine_update_tissues(); | |
| 986 calc_gradient_factor(); | |
| 987 | |
| 167 | 988 // toggle between calculation for nullzeit (bottom time), |
| 989 // deco stops | |
| 990 // and more deco stops (continue) | |
| 991 switch( char_O_deco_status ) | |
| 116 | 992 { |
| 186 | 993 case 3: //---- At surface: start a new dive ------------------------------ |
| 994 clear_deco_table(); | |
| 995 copy_deco_table(); | |
| 996 update_startvalues(); | |
| 192 | 997 low_depth = 0; |
| 998 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 999 backup_low_depth = 255; // backup is empty... | |
| 186 | 1000 break; |
| 1001 | |
| 167 | 1002 case 0: //---- bottom time ----------------------------------------------- |
| 1003 update_startvalues(); | |
| 1004 calc_nullzeit(); | |
| 1005 check_ndl(); | |
| 186 | 1006 char_O_deco_status = 2; // calc ascent next time. |
| 1007 break; | |
| 1008 | |
| 1009 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 1010 // Backup ascention state, ie if we already fixed the low GF reference, | |
| 1011 // and its value. | |
| 1012 backup_GF_step = locked_GF_step; | |
| 192 | 1013 backup_low_depth = low_depth; |
| 186 | 1014 |
| 1015 sim_ascent_to_first_stop(); | |
| 1016 char_O_deco_status = 1; // Cacl stops next time. | |
| 167 | 1017 break; |
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1018 |
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1019 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1020 calc_hauptroutine_calc_deco(); |
| 186 | 1021 |
| 1022 // If simulation is finished, restore the GF low reference, so that | |
| 1023 // next ascent simulation is done from the current depth: | |
| 192 | 1024 if( char_O_deco_status == 0 && backup_low_depth != 255) |
| 186 | 1025 { |
| 1026 locked_GF_step = backup_GF_step; | |
| 192 | 1027 low_depth = backup_low_depth; |
| 1028 backup_low_depth = 255; | |
| 186 | 1029 } |
| 167 | 1030 break; |
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1031 |
| 116 | 1032 } |
| 167 | 1033 |
| 116 | 1034 check_post_dbg(); |
| 1035 } | |
| 1036 | |
| 167 | 1037 ////////////////////////////////////////////////////////////////////////////// |
| 1038 // calc_hauptroutine_data_input | |
| 1039 // | |
| 1040 // Reset all C-code dive parameters from their ASM-code values. | |
| 1041 // Detect gas change condition. | |
| 1042 // | |
| 116 | 1043 void calc_hauptroutine_data_input(void) |
| 1044 { | |
| 167 | 1045 overlay int int_temp; |
| 126 | 1046 |
| 197 | 1047 pres_respiration = int_I_pres_respiration * 0.001; |
| 1048 pres_surface = int_I_pres_surface * 0.001; | |
| 1049 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1050 He_ratio = char_I_He_ratio * 0.01; | |
| 1051 deco_N2_ratio1 = char_I_deco_N2_ratio1 * 0.01; | |
| 1052 deco_He_ratio1 = char_I_deco_He_ratio1 * 0.01; | |
| 1053 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1054 |
| 126 | 1055 // ____________________________________________________ |
| 1056 // | |
| 1057 // _____________ G A S _ C H A N G E S ________________ | |
| 1058 // ____________________________________________________ | |
| 1059 | |
| 1060 int_temp = (int_I_pres_respiration - int_I_pres_surface) + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 1061 | |
| 167 | 1062 deco_gas_change1 = 0; |
| 126 | 1063 deco_gas_change2 = 0; |
| 1064 deco_gas_change3 = 0; | |
| 1065 deco_gas_change4 = 0; | |
| 1066 deco_gas_change5 = 0; | |
| 116 | 1067 |
| 167 | 1068 if(char_I_deco_gas_change1) |
| 126 | 1069 { |
| 167 | 1070 overlay int int_temp2 = ((int)char_I_deco_gas_change1) * 100; |
| 126 | 1071 if(int_temp > int_temp2) |
| 1072 { | |
| 167 | 1073 deco_gas_change1 = (float)char_I_deco_gas_change1 / 9.995 + pres_surface; |
| 1074 deco_gas_change1 += float_deco_distance; | |
| 126 | 1075 } |
| 1076 } | |
| 1077 if(char_I_deco_gas_change2) | |
| 1078 { | |
| 167 | 1079 overlay int int_temp2 = ((int)char_I_deco_gas_change2) * 100; |
| 126 | 1080 if(int_temp > int_temp2) |
| 1081 { | |
| 1082 deco_gas_change2 = (float)char_I_deco_gas_change2 / 9.995 + pres_surface; | |
| 1083 deco_gas_change2 += float_deco_distance; | |
| 1084 } | |
| 1085 } | |
| 1086 if(char_I_deco_gas_change3) | |
| 1087 { | |
| 167 | 1088 overlay int int_temp2 = ((int)char_I_deco_gas_change3) * 100; |
| 126 | 1089 if(int_temp > int_temp2) |
| 1090 { | |
| 1091 deco_gas_change3 = (float)char_I_deco_gas_change3 / 9.995 + pres_surface; | |
| 1092 deco_gas_change3 += float_deco_distance; | |
| 1093 } | |
| 1094 } | |
| 1095 if(char_I_deco_gas_change4) | |
| 1096 { | |
| 167 | 1097 overlay int int_temp2 = ((int)char_I_deco_gas_change4) * 100; |
| 126 | 1098 if(int_temp > int_temp2) |
| 1099 { | |
| 1100 deco_gas_change4 = (float)char_I_deco_gas_change4 / 9.995 + pres_surface; | |
| 1101 deco_gas_change4 += float_deco_distance; | |
| 1102 } | |
| 1103 } | |
| 1104 if(char_I_deco_gas_change5) | |
| 1105 { | |
| 167 | 1106 overlay int int_temp2 = ((int)char_I_deco_gas_change5) * 100; |
| 126 | 1107 if(int_temp > int_temp2) |
| 1108 { | |
| 1109 deco_gas_change5 = (float)char_I_deco_gas_change5 / 9.995 + pres_surface; | |
| 1110 deco_gas_change5 += float_deco_distance; | |
| 1111 } | |
| 1112 } | |
| 116 | 1113 |
| 197 | 1114 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1115 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
| 1116 + pres_surface | |
| 1117 + float_deco_distance; | |
| 1118 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1119 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1120 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1121 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1122 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1123 GF_delta = GF_high - GF_low; |
| 116 | 1124 } |
| 1125 | |
| 167 | 1126 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1127 // |
| 1128 // | |
| 116 | 1129 void calc_hauptroutine_update_tissues(void) |
| 1130 { | |
| 197 | 1131 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1132 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1133 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 1134 | |
| 1135 if (char_I_const_ppO2 == 0) // new in v.101 | |
| 167 | 1136 pres_diluent = pres_respiration; // new in v.101 |
| 186 | 1137 else |
| 1138 { | |
| 167 | 1139 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
| 186 | 1140 if (pres_diluent > pres_respiration) // new in v.101 |
| 1141 pres_diluent = pres_respiration; // new in v.101 | |
| 1142 } | |
| 167 | 1143 if (pres_diluent > 0.0627) // new in v.101 |
| 116 | 1144 { |
| 167 | 1145 temp_atem = N2_ratio * (pres_diluent - 0.0627); // changed in v.101 |
| 1146 temp2_atem = He_ratio * (pres_diluent - 0.0627); // changed in v.101 | |
| 116 | 1147 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1148 } | |
| 167 | 1149 else // new in v.101 |
| 116 | 1150 { |
| 167 | 1151 temp_atem = 0.0; // new in v.101 |
| 1152 temp2_atem = 0.0; // new in v.101 | |
| 116 | 1153 char_O_diluent = 0; |
| 1154 } | |
| 1155 | |
| 1156 if(!char_I_step_is_1min) | |
| 192 | 1157 calc_tissue(0); |
| 116 | 1158 else |
| 192 | 1159 calc_tissue(1); |
| 186 | 1160 |
| 192 | 1161 // Calc limit for surface, ie. GF_high. |
| 1162 calc_limit(GF_high); | |
| 186 | 1163 |
| 192 | 1164 int_O_gtissue_limit = (int)(calc_lead_tissue_limit * 1000); |
| 1165 int_O_gtissue_press = (int)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 1166 | |
| 1167 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1168 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1169 { |
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1170 char_O_nullzeit = 0; // deco necessary |
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1171 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1172 } |
| 171 | 1173 } |
| 1174 | |
| 1175 ////////////////////////////////////////////////////////////////////////////// | |
| 1176 // Calculate gas switches | |
| 1177 // | |
| 1178 // | |
| 1179 void check_gas_switch(void) | |
| 1180 { | |
| 197 | 1181 overlay unsigned char temp_gas_switch = sim_gas_last_used; |
| 1182 | |
| 171 | 1183 calc_N2_ratio = N2_ratio; |
| 1184 calc_He_ratio = He_ratio; | |
| 1185 | |
| 1186 if (char_I_const_ppO2 == 0) | |
| 1187 { | |
| 1188 deco_diluent = temp_deco; | |
| 1189 | |
| 197 | 1190 if( deco_gas_change1 && (temp_deco < deco_gas_change1) ) |
| 171 | 1191 { |
| 1192 calc_N2_ratio = deco_N2_ratio1; | |
| 1193 calc_He_ratio = deco_He_ratio1; | |
| 197 | 1194 temp_gas_switch = 1; |
| 171 | 1195 } |
| 197 | 1196 if(deco_gas_change2 && (temp_deco < deco_gas_change2) ) |
| 171 | 1197 { |
| 197 | 1198 calc_N2_ratio = char_I_deco_N2_ratio2 * 0.01; |
| 1199 calc_He_ratio = char_I_deco_He_ratio2 * 0.01; | |
| 1200 temp_gas_switch = 2; | |
| 171 | 1201 } |
| 1202 if(deco_gas_change3 && (temp_deco < deco_gas_change3)) | |
| 1203 { | |
| 197 | 1204 calc_N2_ratio = char_I_deco_N2_ratio3 * 0.01; |
| 1205 calc_He_ratio = char_I_deco_He_ratio3 * 0.01; | |
| 1206 temp_gas_switch = 3; | |
| 171 | 1207 } |
| 1208 if(deco_gas_change4 && (temp_deco < deco_gas_change4)) | |
| 1209 { | |
| 197 | 1210 calc_N2_ratio = char_I_deco_N2_ratio4 * 0.01; |
| 1211 calc_He_ratio = char_I_deco_He_ratio4 * 0.01; | |
| 1212 temp_gas_switch = 4; | |
| 171 | 1213 } |
| 1214 if(deco_gas_change5 && (temp_deco < deco_gas_change5)) | |
| 1215 { | |
| 197 | 1216 calc_N2_ratio = char_I_deco_N2_ratio5 * 0.01; |
| 1217 calc_He_ratio = char_I_deco_He_ratio5 * 0.01; | |
| 1218 temp_gas_switch = 5; | |
| 171 | 1219 } |
| 1220 } | |
| 197 | 1221 |
| 1222 // Should detect gas switch just once. | |
| 1223 if( temp_gas_switch != sim_gas_last_used ) | |
| 1224 { | |
| 1225 sim_gas_last_used = temp_gas_switch; | |
| 1226 sim_gas_delay = read_custom_function(55); | |
| 1227 } | |
| 1228 | |
| 1229 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 1230 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1231 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1232 } | |
| 1233 | |
| 1234 ////////////////////////////////////////////////////////////////////////////// | |
| 1235 | |
| 1236 static void alveolar_presures(void) | |
| 1237 { | |
| 1238 if (char_I_const_ppO2 != 0) | |
| 171 | 1239 { |
| 1240 if (temp_deco > deco_ppO2_change) | |
| 1241 { | |
| 1242 deco_diluent = ((temp_deco - const_ppO2)/(N2_ratio + He_ratio)); | |
| 1243 } | |
| 1244 else | |
| 1245 { | |
| 1246 deco_diluent = ((temp_deco - deco_ppO2)/(N2_ratio + He_ratio)); | |
| 1247 } | |
| 1248 } | |
| 1249 | |
| 1250 if (deco_diluent > temp_deco) | |
| 1251 deco_diluent = temp_deco; | |
| 1252 if (deco_diluent > 0.0627) | |
| 1253 { | |
| 1254 temp_atem = calc_N2_ratio * (deco_diluent - 0.0627); | |
| 1255 temp2_atem = calc_He_ratio * (deco_diluent - 0.0627); | |
| 1256 } | |
| 1257 else | |
| 1258 { | |
| 1259 temp_atem = 0.0; | |
| 1260 temp2_atem = 0.0; | |
| 1261 } | |
| 197 | 1262 assert( 0.0 <= temp_atem && temp_atem < 14.0 ); |
| 1263 assert( 0.0 <= temp2_atem && temp2_atem < 14.0 ); | |
| 171 | 1264 } |
| 116 | 1265 |
| 167 | 1266 ////////////////////////////////////////////////////////////////////////////// |
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1267 // Compute stops. |
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1268 // |
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1269 // Note: because this can be very long, break on 16 iterations, and set state |
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1270 // to 0 when finished, or to 1 when needing to continue. |
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1271 // |
| 116 | 1272 void calc_hauptroutine_calc_deco(void) |
| 1273 { | |
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1274 overlay unsigned char loop; |
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1275 |
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1276 for(loop = 0; loop < 16; ++loop) |
| 116 | 1277 { |
| 197 | 1278 // Do not ascent while doing a gas switch. |
| 1279 if( sim_gas_delay == 0 ) | |
| 1280 calc_nextdecodepth(); | |
| 116 | 1281 |
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1282 //---- Finish computations once surface is reached ------------------- |
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1283 if( temp_depth_limit <= 0 ) |
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1284 { |
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1285 copy_deco_table(); |
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1286 calc_ascenttime(); |
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1287 char_O_deco_status = 0; // calc nullzeit next time. |
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1288 return; |
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1289 } |
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1290 |
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1291 //---- Else, continue simulating the stops --------------------------- |
| 197 | 1292 if( sim_gas_delay == 0 ) |
| 1293 check_gas_switch(); // Calculate N2_ratio and He_ratio. | |
| 1294 else | |
| 1295 sim_gas_delay--; | |
| 1296 | |
| 1297 alveolar_presures(); // Updates ppN2 and ppHe. | |
| 186 | 1298 |
| 192 | 1299 sim_tissue(1); // Simulate compartiments for 1 minute. |
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1300 update_deco_table(); // Add one minute stops. |
| 116 | 1301 } |
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1302 |
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1303 // Surface not reached, need more stops... |
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1304 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1305 } |
| 1306 | |
| 167 | 1307 ////////////////////////////////////////////////////////////////////////////// |
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1308 // Simulation ascention to first deco stop. |
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1309 // |
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1310 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1311 // there is no need to break on more that 16 iterations |
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1312 // (or we are already in deep shit). |
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1313 // |
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1314 void sim_ascent_to_first_stop(void) |
| 116 | 1315 { |
| 171 | 1316 update_startvalues(); |
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1317 clear_deco_table(); |
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1318 |
| 116 | 1319 temp_deco = pres_respiration; |
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1320 |
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1321 // Loop until first top or surface is reached. |
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1322 for(;;) |
| 116 | 1323 { |
| 197 | 1324 // Do not ascent while doing a gas switch. |
| 1325 if( sim_gas_delay == 0 ) | |
| 1326 temp_deco -= 1.0; // Ascent 1 min, at 10m/min. == 1bar/min. | |
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1327 |
| 192 | 1328 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1329 sim_limit(GF_low); | |
| 116 | 1330 |
| 192 | 1331 // Did we reach first stop ? |
| 1332 if( temp_deco <= sim_lead_tissue_limit ) | |
| 197 | 1333 break; // Yes: finished ! |
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1334 |
| 171 | 1335 // Next stop is surface ? |
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1336 if( temp_deco <= pres_surface ) |
| 171 | 1337 break; // Yes: finished too. |
| 1338 | |
| 197 | 1339 //---- Simulat gas switches |
| 1340 if( sim_gas_delay > 0 ) | |
| 1341 { | |
| 1342 sim_gas_delay--; // Decrement switch delay | |
| 1343 temp_depth_limit = (temp_deco - pres_surface) / 0.09985; | |
| 1344 update_deco_table(); // And mark stop in table | |
| 1345 } | |
| 1346 else | |
| 1347 { | |
| 1348 temp_deco += 0.5; // Check gas change 5 meter below new depth. | |
| 171 | 1349 check_gas_switch(); |
| 197 | 1350 temp_deco -= 0.5; // Back to new depth. |
| 1351 } | |
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1352 |
| 192 | 1353 // Then simulate with the new gas pressures... (1min) |
| 197 | 1354 alveolar_presures(); // Calculated at true depth ! |
| 192 | 1355 sim_tissue(1); |
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1356 } |
| 192 | 1357 temp_deco += 1.0; // Restore last correct depth. |
| 167 | 1358 } |
| 116 | 1359 |
| 167 | 1360 ////////////////////////////////////////////////////////////////////////////// |
| 1361 // calc_tissue | |
| 1362 // | |
| 116 | 1363 // optimized in v.101 |
| 167 | 1364 // |
| 184 | 1365 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1366 { |
| 126 | 1367 for (ci=0;ci<16;ci++) |
| 1368 { | |
| 184 | 1369 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1370 |
| 126 | 1371 // N2 |
| 165 | 1372 temp_tissue = (temp_atem - pres_tissue[ci]) * var_N2_e; |
| 126 | 1373 temp_tissue_safety(); |
| 167 | 1374 pres_tissue[ci] += temp_tissue; |
| 165 | 1375 |
| 126 | 1376 // He |
| 167 | 1377 temp_tissue = (temp2_atem - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1378 temp_tissue_safety(); |
| 167 | 1379 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1380 } |
| 167 | 1381 } |
| 116 | 1382 |
| 167 | 1383 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1384 // calc_limit |
| 167 | 1385 // |
| 192 | 1386 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1387 // |
| 192 | 1388 static void calc_limit(PARAMETER float GF_current) |
| 167 | 1389 { |
| 192 | 1390 char_O_gtissue_no = 255; |
| 1391 calc_lead_tissue_limit = 0.0; | |
| 1392 | |
| 1393 for (ci=0;ci<16;ci++) | |
| 1394 { | |
| 1395 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1396 | |
| 1397 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
| 1398 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
| 1399 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1400 |
| 192 | 1401 // Apply the Eric Baker's varying gradient factor correction. |
| 1402 // Note: the correction factor depends both on GF and b, | |
| 1403 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1404 // so that can change who is the leading gas... | |
| 1405 // Note: Also depends of the GF. So the calcul is different for | |
| 1406 // GF_low, current GF, or GF_high... | |
| 1407 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1408 // hence what would happend at surface, | |
| 1409 // hence at GF_high. | |
| 1410 if( char_I_deco_model == 1 ) | |
| 1411 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1412 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1413 else | |
| 1414 p = (p - var_N2_a) * var_N2_b; | |
| 1415 if( p < 0 ) p = 0; | |
| 1416 | |
| 1417 pres_tissue_limit[ci] = p; | |
| 1418 if( p > calc_lead_tissue_limit ) | |
| 1419 { | |
| 1420 char_O_gtissue_no = ci; | |
| 1421 calc_lead_tissue_limit = p; | |
| 1422 } | |
| 1423 } | |
| 197 | 1424 |
| 1425 assert( char_O_gtissue_no < 16 ); | |
| 1426 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1427 } |
| 1428 | |
| 1429 ////////////////////////////////////////////////////////////////////////////// | |
| 1430 // calc_nullzeit | |
| 1431 // | |
| 1432 // calculates the remaining bottom time | |
| 1433 // | |
| 1434 // unchanged in v.101 | |
| 1435 // | |
| 1436 static void calc_nullzeit(void) | |
| 1437 { | |
| 1438 overlay int loop; | |
| 1439 | |
| 116 | 1440 char_O_nullzeit = 0; |
| 167 | 1441 for(loop = 1; loop <= 17; loop++) |
| 116 | 1442 { |
| 1443 backup_sim_pres_tissue(); | |
| 197 | 1444 sim_tissue(2); // 10 min. |
| 192 | 1445 sim_limit(GF_high); |
| 167 | 1446 |
| 192 | 1447 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1448 { |
| 1449 restore_sim_pres_tissue(); | |
| 1450 break; | |
| 1451 } | |
| 1452 // Validate once we know its good. | |
| 1453 char_O_nullzeit += 10; | |
| 167 | 1454 } |
| 1455 | |
| 116 | 1456 if (char_O_nullzeit < 60) |
| 1457 { | |
| 167 | 1458 for(loop=1; loop <= 10; loop++) |
| 116 | 1459 { |
| 197 | 1460 sim_tissue(1); // 1 min |
| 192 | 1461 sim_limit(GF_high); |
| 1462 | |
| 1463 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1464 break; |
| 1465 char_O_nullzeit++; | |
| 167 | 1466 } |
| 185 | 1467 } |
| 1468 } | |
| 116 | 1469 |
| 167 | 1470 ////////////////////////////////////////////////////////////////////////////// |
| 1471 // backup_sim_pres_tissue | |
| 1472 // | |
| 116 | 1473 void backup_sim_pres_tissue(void) |
| 1474 { | |
| 167 | 1475 overlay unsigned char x; |
| 1476 | |
| 1477 for(x = 0; x<32; x++) | |
| 126 | 1478 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1479 } |
| 116 | 1480 |
| 167 | 1481 ////////////////////////////////////////////////////////////////////////////// |
| 1482 // restore_sim_pres_tissue | |
| 1483 // | |
| 116 | 1484 void restore_sim_pres_tissue(void) |
| 1485 { | |
| 167 | 1486 overlay unsigned char x; |
| 1487 | |
| 1488 for(x = 0; x<32; x++) | |
| 126 | 1489 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1490 } |
| 116 | 1491 |
| 167 | 1492 ////////////////////////////////////////////////////////////////////////////// |
| 1493 // calc_ascenttime | |
| 1494 // | |
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1495 static void calc_ascenttime(void) |
| 116 | 1496 { |
| 126 | 1497 if (pres_respiration > pres_surface) |
| 1498 { | |
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1499 overlay unsigned char x; |
| 168 | 1500 |
| 192 | 1501 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
| 1502 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
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1503 if (ascent < 0.0) |
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1504 ascent = 0.0; |
| 192 | 1505 int_O_ascenttime = (unsigned int)(ascent + 0.99); |
| 168 | 1506 |
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1507 for(x=0; x<32 && internal_deco_depth[x]; x++) |
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1508 int_O_ascenttime += (unsigned int)internal_deco_time[x]; |
| 126 | 1509 } |
| 1510 else | |
| 168 | 1511 int_O_ascenttime = 0; |
| 167 | 1512 } |
| 116 | 1513 |
| 167 | 1514 ////////////////////////////////////////////////////////////////////////////// |
| 1515 // update_startvalues | |
| 1516 // | |
| 116 | 1517 // updated in v.102 |
| 167 | 1518 // |
| 116 | 1519 void update_startvalues(void) |
| 1520 { | |
| 167 | 1521 overlay unsigned char x; |
| 116 | 1522 |
| 1523 for (x = 0;x<16;x++) | |
| 1524 { | |
| 1525 sim_pres_tissue[x] = pres_tissue[x]; | |
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1526 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1527 sim_pres_tissue_limit[x] = pres_tissue_limit[x]; |
| 1528 } | |
| 197 | 1529 |
| 1530 sim_gas_last_used = -1; // No switch yet. | |
| 1531 sim_lead_tissue_limit = 0.0; | |
| 1532 sim_lead_tissue_no = 255; | |
| 167 | 1533 } |
| 116 | 1534 |
| 167 | 1535 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1536 // sim_tissue |
| 167 | 1537 // |
| 116 | 1538 // optimized in v.101 |
| 167 | 1539 // |
| 1540 // Function very simular to calc_tissue, but: | |
| 1541 // + Use a 1min or 10min period. | |
| 1542 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1543 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1544 { |
| 192 | 1545 for(ci=0; ci<16; ci++) |
| 126 | 1546 { |
| 184 | 1547 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1548 |
| 126 | 1549 // N2 |
| 165 | 1550 temp_tissue = (temp_atem - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1551 temp_tissue_safety(); |
| 167 | 1552 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1553 |
| 1554 // He | |
| 167 | 1555 temp_tissue = (temp2_atem - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1556 temp_tissue_safety(); |
| 167 | 1557 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1558 } |
| 167 | 1559 } |
| 116 | 1560 |
| 167 | 1561 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1562 // sim_limit() |
| 1563 // | |
| 1564 // New in v.111 | |
| 1565 // | |
| 1566 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1567 // different depth, because it depends on current gradient factor. | |
| 167 | 1568 // |
| 192 | 1569 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1570 { |
| 192 | 1571 sim_lead_tissue_limit = 0.0; |
| 1572 sim_lead_tissue_no = 255; | |
| 1573 | |
| 1574 for(ci=0; ci<16; ci++) | |
| 1575 { | |
| 1576 overlay float p = sim_pres_tissue[ci] + (sim_pres_tissue+16)[ci]; | |
| 1577 | |
| 1578 read_buhlmann_coefficients(-1); | |
| 1579 var_N2_a = (var_N2_a * sim_pres_tissue[ci] + var_He_a * (sim_pres_tissue+16)[ci]) / p; | |
| 1580 var_N2_b = (var_N2_b * sim_pres_tissue[ci] + var_He_b * (sim_pres_tissue+16)[ci]) / p; | |
| 1581 | |
| 1582 // Apply the Eric Baker's varying gradient factor correction. | |
| 1583 // Note: the correction factor depends both on GF and b, | |
| 1584 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1585 // so that can change who is the leading gas... | |
| 1586 // Note: Also depends of the GF_current... | |
| 1587 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1588 // hence what would happend at surface, | |
| 1589 // hence at GF_high. | |
| 1590 if( char_I_deco_model == 1 ) | |
| 1591 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1592 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1593 else | |
| 1594 p = (p - var_N2_a) * var_N2_b; | |
| 1595 if( p < 0 ) p = 0; | |
| 1596 | |
| 1597 sim_pres_tissue_limit[ci] = p; | |
| 1598 if( p > sim_lead_tissue_limit ) | |
| 1599 { | |
| 1600 sim_lead_tissue_no = ci; | |
| 1601 sim_lead_tissue_limit = p; | |
| 1602 } | |
| 1603 } // for ci | |
| 197 | 1604 |
| 1605 assert( sim_lead_tissue_no < 16 ); | |
| 1606 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0); | |
| 167 | 1607 } |
| 116 | 1608 |
| 167 | 1609 ////////////////////////////////////////////////////////////////////////////// |
|
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1610 // clear_deco_table |
| 167 | 1611 // |
| 1612 // unchanged in v.101 | |
| 1613 // | |
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1614 static void clear_deco_table(void) |
| 116 | 1615 { |
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1616 overlay unsigned char x; |
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1617 |
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1618 for(x=0; x<32; ++x) |
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1619 { |
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1620 internal_deco_time [x] = 0; |
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1621 internal_deco_depth[x] = 0; |
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1622 } |
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1623 } |
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1624 |
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1625 ////////////////////////////////////////////////////////////////////////////// |
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1626 // update_deco_table |
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1627 // |
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1628 // Add 1 min to current stop. |
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1629 // |
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1630 // Inputs: |
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1631 // temp_depth_limit = stop's depth, in meters. |
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1632 // In/Out: |
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1633 // internal_deco_depth[] : depth (in meters) of each stops. |
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1634 // internal_deco_time [] : time (in minutes) of each stops. |
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1635 // |
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1636 static void update_deco_table() |
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1637 { |
| 192 | 1638 overlay unsigned char x; |
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1639 |
| 192 | 1640 for(x=0; x<32; ++x) |
| 1641 { | |
| 1642 if( internal_deco_depth[x] == temp_depth_limit) | |
| 1643 { | |
| 1644 // Do not overflow (max 255') | |
| 1645 if( internal_deco_time[x] < 255 ) | |
| 1646 { | |
| 1647 internal_deco_time[x]++; | |
| 1648 return; | |
| 1649 } | |
| 1650 // But store extra in the next stop... | |
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1651 } |
| 192 | 1652 |
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1653 if( internal_deco_depth[x] == 0 ) |
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1654 { |
| 192 | 1655 internal_deco_depth[x] = temp_depth_limit; |
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1656 internal_deco_time[x] = 1; |
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1657 return; |
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1658 } |
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1659 } |
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1660 |
| 192 | 1661 // Can't store stops at more than 96m. |
| 1662 // Or stops at less that 3m too. | |
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1663 // Just do nothing with that... |
| 167 | 1664 } |
| 116 | 1665 |
| 167 | 1666 ////////////////////////////////////////////////////////////////////////////// |
| 1667 // calc_gradient_factor | |
| 1668 // | |
| 165 | 1669 // optimized in v.101 (var_N2_a) |
| 116 | 1670 // new code in v.102 |
| 167 | 1671 // |
| 1672 static void calc_gradient_factor(void) | |
| 116 | 1673 { |
| 197 | 1674 overlay float gf; |
| 1675 assert( char_O_gtissue_no < 16 ); | |
| 1676 | |
| 116 | 1677 // tissue > respiration (entsaettigungsvorgang) |
| 1678 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1679 // dh. 0% = respiration == tissue | |
| 1680 // dh. 100% = respiration == limit | |
| 197 | 1681 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
| 1682 if( temp_tissue < pres_respiration ) | |
| 1683 gf = 0.0; | |
| 1684 else | |
| 1685 { | |
| 1686 gf = (temp_tissue - pres_respiration) | |
| 1687 / (temp_tissue - pres_tissue_limit[char_O_gtissue_no]) | |
| 1688 * 100.0; | |
| 1689 if( gf > 255.0 ) gf = 255.0; | |
| 1690 if( gf < 0.0 ) gf = 0.0; | |
| 1691 } | |
| 1692 char_O_gradient_factor = (unsigned char)gf; | |
| 116 | 1693 |
| 1694 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1695 { | |
| 197 | 1696 overlay float rgf; |
| 1697 | |
| 1698 if( low_depth == 0 ) | |
| 1699 rgf = GF_high; | |
| 1700 else | |
| 1701 { | |
| 1702 overlay float temp1 = low_depth * 0.09995; | |
| 1703 overlay float temp2 = pres_respiration - pres_surface; | |
| 186 | 1704 |
| 197 | 1705 if (temp2 <= 0) |
| 1706 rgf = GF_high; | |
| 1707 else if (temp2 >= temp1) | |
| 1708 rgf = GF_low; | |
| 1709 else | |
| 1710 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1711 } | |
| 186 | 1712 |
| 197 | 1713 rgf = gf / rgf; // gf is already in percent |
| 1714 if( rgf < 0.0 ) rgf = 0.0; | |
| 1715 if( rgf > 255.0 ) rgf = 255.0; | |
| 1716 char_O_relative_gradient_GF = (unsigned char)rgf; | |
| 116 | 1717 } // calc relative gradient factor |
| 1718 else | |
| 1719 { | |
| 186 | 1720 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1721 } |
| 167 | 1722 } |
| 116 | 1723 |
| 167 | 1724 ////////////////////////////////////////////////////////////////////////////// |
| 1725 // deco_calc_desaturation_time | |
| 1726 // | |
| 116 | 1727 // FIXED N2_ratio |
| 1728 // unchanged in v.101 | |
| 167 | 1729 // |
| 116 | 1730 void deco_calc_desaturation_time(void) |
| 1731 { | |
| 184 | 1732 overlay unsigned int desat_time; // For a particular compartiment, in min. |
| 197 | 1733 overlay float temp2; |
| 1734 overlay float temp3; | |
| 1735 overlay float temp4; | |
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1736 RESET_C_STACK |
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1737 |
| 126 | 1738 N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann |
| 1739 pres_surface = (float)int_I_pres_surface / 1000.0; | |
| 1740 temp_atem = N2_ratio * (pres_surface - 0.0627); | |
| 1741 int_O_desaturation_time = 0; | |
| 1742 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 1743 | |
| 1744 for (ci=0;ci<16;ci++) | |
| 1745 { | |
| 165 | 1746 var_N2_halftime = buhlmann_ht[ci]; |
| 167 | 1747 var_He_halftime = (buhlmann_ht+16)[ci]; |
| 116 | 1748 |
| 126 | 1749 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1750 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1751 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1752 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1753 // N2 | |
| 1754 temp1 = 1.05 * temp_atem; | |
| 1755 temp1 = temp1 - pres_tissue[ci]; | |
| 1756 temp2 = temp_atem - pres_tissue[ci]; | |
| 1757 if (temp2 >= 0.0) | |
| 1758 { | |
| 1759 temp1 = 0; | |
| 1760 temp2 = 0; | |
| 1761 } | |
| 1762 else | |
| 1763 temp1 = temp1 / temp2; | |
| 1764 if (temp1 > 0.0) | |
| 1765 { | |
| 1766 temp1 = log(1.0 - temp1); | |
| 1767 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1768 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1769 // minus because log is negative | |
| 165 | 1770 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 | 1771 } |
| 1772 else | |
| 1773 { | |
| 1774 temp1 = 0; | |
| 1775 temp2 = 0; | |
| 1776 } | |
| 116 | 1777 |
| 126 | 1778 // He |
| 167 | 1779 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1780 if (temp3 >= 0.0) |
| 1781 { | |
| 1782 temp3 = 0; | |
| 1783 temp4 = 0; | |
| 1784 } | |
| 1785 else | |
| 167 | 1786 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 126 | 1787 if (temp3 > 0.0) |
| 1788 { | |
| 1789 temp3 = log(1.0 - temp3); | |
| 1790 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1791 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1792 // minus because log is negative | |
| 165 | 1793 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1794 } |
| 1795 else | |
| 1796 { | |
| 1797 temp3 = 0; | |
| 1798 temp4 = 0; | |
| 1799 } | |
| 116 | 1800 |
| 126 | 1801 // saturation_time (for flight) |
| 1802 if (temp4 > temp2) | |
| 184 | 1803 desat_time = (unsigned int)temp4; |
| 126 | 1804 else |
| 184 | 1805 desat_time = (unsigned int)temp2; |
| 167 | 1806 if(desat_time > int_O_desaturation_time) |
| 1807 int_O_desaturation_time = desat_time; | |
| 116 | 1808 |
| 126 | 1809 // N2 saturation in multiples of halftime for display purposes |
| 1810 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1811 temp2 = temp2 + 80.0; // set center | |
| 1812 if (temp2 < 0.0) | |
| 1813 temp2 = 0.0; | |
| 1814 if (temp2 > 255.0) | |
| 1815 temp2 = 255.0; | |
| 1816 char_O_tissue_saturation[ci] = (char)temp2; | |
| 1817 // He saturation in multiples of halftime for display purposes | |
| 1818 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1819 temp4 = temp4 + 80.0; // set center | |
| 1820 if (temp4 < 0.0) | |
| 1821 temp4 = 0.0; | |
| 1822 if (temp4 > 255.0) | |
| 1823 temp4 = 255.0; | |
| 167 | 1824 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1825 } // for |
| 167 | 1826 } |
| 116 | 1827 |
| 167 | 1828 ////////////////////////////////////////////////////////////////////////////// |
| 1829 // calc_wo_deco_step_1_min | |
| 1830 // | |
| 116 | 1831 // FIXED N2 Ratio |
| 1832 // optimized in v.101 (...saturation_multiplier) | |
| 1833 // desaturation slowed down to 70,42% | |
| 167 | 1834 // |
| 1835 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1836 { |
| 1837 if(flag_in_divemode) | |
| 1838 { | |
| 1839 flag_in_divemode = 0; | |
| 1840 set_dbg_end_of_dive(); | |
| 1841 } | |
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1842 |
| 126 | 1843 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 1844 pres_respiration = (float)int_I_pres_respiration / 1000.0; // assembler code uses different digit system | |
| 192 | 1845 pres_surface = (float)int_I_pres_surface / 1000.0; // the b"uhlmann formula using pres_surface does not use the N2_ratio |
| 126 | 1846 temp_atem = N2_ratio * (pres_respiration - 0.0627); // 0.0627 is the extra pressure in the body |
| 1847 temp2_atem = 0.0; | |
| 1848 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 197 | 1849 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 1850 |
| 192 | 1851 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 1852 |
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1853 clear_deco_table(); |
| 126 | 1854 char_O_deco_status = 0; |
| 1855 char_O_nullzeit = 0; | |
| 168 | 1856 int_O_ascenttime = 0; |
| 126 | 1857 calc_gradient_factor(); |
| 167 | 1858 } |
| 126 | 1859 |
| 167 | 1860 ////////////////////////////////////////////////////////////////////////////// |
| 1861 ////////////////////////////////////////////////////////////////////////////// | |
| 1862 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1863 ////////////////////////////////////////////////////////////////////////////// | |
| 1864 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1865 |
| 184 | 1866 #ifndef CROSS_COMPILE |
| 116 | 1867 void deco_hash(void) |
| 1868 { | |
| 167 | 1869 overlay unsigned char md_i, md_j; // Loop index. |
| 1870 overlay unsigned char md_t; | |
| 1871 overlay unsigned char md_buffer[16]; | |
| 1872 overlay unsigned char md_temp; | |
| 1873 overlay unsigned int md_pointer; | |
| 1874 | |
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1875 RESET_C_STACK |
| 126 | 1876 |
| 1877 // init | |
| 164 | 1878 for(md_i=0;md_i<16;md_i++) |
| 126 | 1879 { |
| 1880 md_state[md_i] = 0; | |
| 164 | 1881 char_O_hash[md_i] = 0; |
| 126 | 1882 } // for md_i 16 |
| 116 | 1883 |
| 126 | 1884 _asm |
| 167 | 1885 movlw 0x01 // md_pi address. |
| 1886 movwf TBLPTRU,0 | |
| 1887 movlw 0x7E | |
| 1888 movwf TBLPTRH,0 | |
| 1889 movlw 0x00 | |
| 1890 movwf TBLPTRL,0 | |
| 126 | 1891 _endasm; |
| 165 | 1892 md_i = 0; |
| 1893 do { | |
| 126 | 1894 _asm |
| 1895 TBLRDPOSTINC | |
| 1896 movff TABLAT,md_temp | |
| 1897 _endasm | |
| 165 | 1898 md_pi_subst[md_i++] = md_temp; |
| 1899 } while( md_i != 0 ); | |
| 1900 | |
| 126 | 1901 _asm |
| 167 | 1902 movlw 0x00 |
| 1903 movwf TBLPTRU,0 | |
| 1904 movlw 0x00 | |
| 1905 movwf TBLPTRH,0 | |
| 1906 movlw 0x00 | |
| 1907 movwf TBLPTRL,0 | |
| 126 | 1908 _endasm |
| 167 | 1909 |
| 126 | 1910 // cycle buffers |
| 1911 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 1912 { | |
| 1913 md_t = 0; | |
| 1914 for (md_i=0;md_i<16;md_i++) | |
| 1915 { | |
| 1916 if(md_pointer == 9) | |
| 164 | 1917 md_temp = char_O_hash[md_i]; |
| 126 | 1918 else |
| 1919 { | |
| 1920 _asm | |
| 167 | 1921 TBLRDPOSTINC |
| 1922 movff TABLAT,md_temp | |
| 126 | 1923 _endasm |
| 1924 } // else | |
| 167 | 1925 |
| 1926 md_buffer[md_i] = md_temp; | |
| 186 | 1927 md_state[md_i+16] = md_temp; |
| 1928 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 1929 } // for md_i 16 |
| 1930 | |
| 1931 for (md_i=0;md_i<18;md_i++) | |
| 1932 { | |
| 1933 for (md_j=0;md_j<48;md_j++) | |
| 1934 { | |
| 167 | 1935 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 1936 md_t = md_state[md_j]; |
| 1937 } // for md_j 48 | |
| 1938 md_t = (unsigned char)(md_t+1); | |
| 1939 } // for md_i 18 | |
| 164 | 1940 md_t = char_O_hash[15]; |
| 126 | 1941 |
| 1942 for (md_i=0;md_i<16;md_i++) | |
| 1943 { | |
| 167 | 1944 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 1945 md_t = char_O_hash[md_i]; |
| 126 | 1946 } // for md_i 16 |
| 1947 } // for md_pointer | |
| 116 | 1948 } // void deco_hash(void) |
| 184 | 1949 #endif |
| 116 | 1950 |
| 167 | 1951 ////////////////////////////////////////////////////////////////////////////// |
| 1952 // deco_clear_CNS_fraction | |
| 1953 // | |
| 116 | 1954 // new in v.101 |
| 167 | 1955 // |
| 116 | 1956 void deco_clear_CNS_fraction(void) |
| 1957 { | |
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1958 RESET_C_STACK |
| 126 | 1959 CNS_fraction = 0.0; |
| 1960 char_O_CNS_fraction = 0; | |
| 167 | 1961 } |
| 116 | 1962 |
| 167 | 1963 ////////////////////////////////////////////////////////////////////////////// |
| 1964 // deco_calc_CNS_fraction | |
| 1965 // | |
| 116 | 1966 // new in v.101 |
| 1967 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 1968 // |
| 116 | 1969 // Input: char_I_actual_ppO2 |
| 1970 // Output: char_O_CNS_fraction | |
| 1971 // Uses and Updates: CNS_fraction | |
| 1972 // Uses: acutal_ppO2 | |
| 167 | 1973 // |
| 116 | 1974 void deco_calc_CNS_fraction(void) |
| 1975 { | |
| 167 | 1976 overlay float actual_ppO2; |
| 126 | 1977 RESET_C_STACK |
| 167 | 1978 |
| 126 | 1979 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 1980 |
| 126 | 1981 if (char_I_actual_ppO2 < 50) |
| 1982 CNS_fraction = CNS_fraction;// no changes | |
| 1983 else if (char_I_actual_ppO2 < 60) | |
| 1984 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 1985 else if (char_I_actual_ppO2 < 70) | |
| 1986 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 1987 else if (char_I_actual_ppO2 < 80) | |
| 1988 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 1989 else if (char_I_actual_ppO2 < 90) | |
| 1990 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 1991 else if (char_I_actual_ppO2 < 110) | |
| 1992 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 1993 else if (char_I_actual_ppO2 < 150) | |
| 1994 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 1995 else if (char_I_actual_ppO2 < 160) | |
| 1996 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 1997 else if (char_I_actual_ppO2 < 165) | |
| 1998 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 | |
| 1999 else if (char_I_actual_ppO2 < 170) | |
| 2000 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 2001 else if (char_I_actual_ppO2 < 175) | |
| 2002 CNS_fraction = 0.00136 + CNS_fraction; | |
| 2003 else if (char_I_actual_ppO2 < 180) | |
| 2004 CNS_fraction = 0.00180 + CNS_fraction; | |
| 2005 else if (char_I_actual_ppO2 < 185) | |
| 2006 CNS_fraction = 0.00237 + CNS_fraction; | |
| 2007 else if (char_I_actual_ppO2 < 190) | |
| 2008 CNS_fraction = 0.00310 + CNS_fraction; | |
| 2009 else if (char_I_actual_ppO2 < 195) | |
| 2010 CNS_fraction = 0.00401 + CNS_fraction; | |
| 2011 else if (char_I_actual_ppO2 < 200) | |
| 2012 CNS_fraction = 0.00517 + CNS_fraction; | |
| 2013 else if (char_I_actual_ppO2 < 230) | |
| 2014 CNS_fraction = 0.0209 + CNS_fraction; | |
| 2015 else | |
| 2016 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 2017 |
| 126 | 2018 if (CNS_fraction > 2.5) |
| 2019 CNS_fraction = 2.5; | |
| 2020 if (CNS_fraction < 0.0) | |
| 2021 CNS_fraction = 0.0; | |
| 2022 | |
| 2023 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2024 } |
| 116 | 2025 |
| 167 | 2026 ////////////////////////////////////////////////////////////////////////////// |
| 2027 // deco_calc_CNS_decrease_15min | |
| 2028 // | |
| 116 | 2029 // new in v.101 |
| 167 | 2030 // |
| 116 | 2031 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 167 | 2032 // |
| 116 | 2033 // Output: char_O_CNS_fraction |
| 2034 // Uses and Updates: CNS_fraction | |
| 167 | 2035 // |
| 116 | 2036 void deco_calc_CNS_decrease_15min(void) |
| 2037 { | |
|
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2038 RESET_C_STACK |
| 126 | 2039 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2040 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2041 } | |
| 116 | 2042 |
| 167 | 2043 ////////////////////////////////////////////////////////////////////////////// |
| 2044 // deco_calc_percentage | |
| 2045 // | |
| 116 | 2046 // new in v.101 |
| 167 | 2047 // |
| 116 | 2048 // calculates int_I_temp * char_I_temp / 100 |
| 2049 // output is int_I_temp | |
| 2050 | |
| 2051 void deco_calc_percentage(void) | |
| 2052 { | |
|
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|
2053 RESET_C_STACK |
| 197 | 2054 int_I_temp = (int)(int_I_temp * (char_I_temp / 100.0)); |
| 116 | 2055 } |
| 2056 | |
| 167 | 2057 ////////////////////////////////////////////////////////////////////////////// |
| 2058 | |
| 116 | 2059 void deco_push_tissues_to_vault(void) |
| 2060 { | |
| 167 | 2061 overlay unsigned char x; |
|
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2062 RESET_C_STACK |
| 167 | 2063 |
| 116 | 2064 cns_vault = CNS_fraction; |
| 167 | 2065 for (x=0;x<32;x++) |
| 2066 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2067 } |
| 167 | 2068 |
| 116 | 2069 void deco_pull_tissues_from_vault(void) |
| 2070 { | |
| 167 | 2071 overlay unsigned char x; |
|
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2072 RESET_C_STACK |
| 167 | 2073 |
| 116 | 2074 CNS_fraction = cns_vault; |
| 167 | 2075 for (x=0;x<32;x++) |
| 2076 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2077 } |
| 2078 | |
| 167 | 2079 ////////////////////////////////////////////////////////////////////////////// |
| 2080 // | |
| 184 | 2081 #ifndef CROSS_COMPILE |
| 2082 void main() {} | |
| 2083 #endif |