Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 192:c8816e4bc724
GF Model
+ Apply the Eric's Baker gradient formula.
+ Apply GF varying corrections for each compartiment.
+ B?hlmann 100/100 == Gradient factor 100/100.
+ Compute stop with gradient at current depth (not GF_low)
+ Add assert() on visual platform.
+ Overflow stop into the next bin at same depth.
+ debug last deco depth in range 3m..6m.
| author | JeanDo |
|---|---|
| date | Fri, 11 Feb 2011 23:39:35 +0100 |
| parents | 57a654c199ae |
| children | 652e17b6267a |
| 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. |
| 116 | 71 // |
| 167 | 72 // TODO: |
| 73 // + Allow (CF) delay for gas switch while predicting ascent. | |
| 74 // + Allow to abort MD2 calculation (have to restart next time). | |
| 75 // | |
| 76 // Literature: | |
| 116 | 77 // B"uhlmann, Albert: Tauchmedizin; 4. Auflage; |
| 78 // 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 | |
| 79 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 80 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 81 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 82 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 83 // |
| 84 // | |
| 116 | 85 |
| 86 // ********************* | |
| 87 // ** I N C L U D E S ** | |
| 88 // ********************* | |
| 89 #include <math.h> | |
| 167 | 90 |
| 192 | 91 // *********************************************** |
| 92 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 93 // *********************************************** | |
| 94 | |
| 95 #include "p2_definitions.h" | |
| 96 #include "shared_definitions.h" | |
| 97 | |
| 167 | 98 // ************************* |
| 99 // ** P R O T O T Y P E S ** | |
| 100 // ************************* | |
| 101 | |
| 102 static void calc_hauptroutine(void); | |
| 103 static void calc_nullzeit(void); | |
| 104 | |
| 192 | 105 static void calc_tissue(PARAMETER unsigned char period); |
| 106 static void calc_limit(PARAMETER float GF_current); | |
| 107 | |
| 108 static void calc_wo_deco_step_2s(void); | |
| 167 | 109 static void clear_tissue(void); |
| 110 static void calc_ascenttime(void); | |
| 111 static void update_startvalues(void); | |
|
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112 static void clear_deco_table(void); |
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113 static void update_deco_table(void); |
| 192 | 114 |
| 115 static void backup_sim_pres_tissue(void); | |
| 116 static void restore_sim_pres_tissue(void); | |
| 117 static void sim_tissue(PARAMETER unsigned char period); | |
| 118 static void sim_limit(PARAMETER float GF_current); | |
| 167 | 119 static void calc_gradient_factor(void); |
| 120 static void calc_wo_deco_step_1_min(void); | |
| 121 | |
| 122 static void calc_hauptroutine_data_input(void); | |
| 123 static void calc_hauptroutine_update_tissues(void); | |
| 124 static void calc_hauptroutine_calc_deco(void); | |
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125 static void sim_ascent_to_first_stop(void); |
| 167 | 126 |
| 171 | 127 static void calc_nextdecodepth(void); |
| 116 | 128 |
| 163 | 129 //---- Bank 3 parameters ----------------------------------------------------- |
| 130 #pragma udata bank4=0x400 | |
| 116 | 131 |
| 192 | 132 static unsigned char low_depth; |
| 116 | 133 static float temp_limit; |
| 134 static float GF_low; | |
| 135 static float GF_high; | |
| 136 static float GF_delta; | |
| 192 | 137 static unsigned char low_depth; // Depth of deepest stop |
| 138 static float locked_GF_step; // GF_delta / low_depth | |
| 139 | |
| 140 static unsigned char temp_depth_limit; | |
| 171 | 141 |
| 192 | 142 // Simulation context: used to predict ascent. |
| 143 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 144 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 145 |
| 192 | 146 // Real context: what we are doing now. |
| 147 static float calc_lead_tissue_limit; // | |
| 116 | 148 |
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149 static unsigned char internal_deco_time[32]; |
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150 static unsigned char internal_deco_depth[32]; |
| 116 | 151 |
| 152 static float cns_vault; | |
| 153 static float pres_tissue_vault[32]; | |
| 154 | |
| 163 | 155 //---- Bank 5 parameters ----------------------------------------------------- |
| 156 #pragma udata bank5=0x500 | |
| 157 | |
| 167 | 158 static unsigned char ci; |
| 116 | 159 static float pres_respiration; |
| 160 static float pres_surface; | |
| 161 static float temp1; | |
| 162 static float temp2; | |
| 163 static float temp3; | |
| 164 static float temp4; | |
| 165 static float temp_deco; | |
| 166 static float temp_atem; | |
| 167 static float temp2_atem; | |
| 168 static float temp_tissue; | |
| 169 static float N2_ratio; | |
| 170 static float He_ratio; | |
| 165 | 171 static float var_N2_a; |
| 172 static float var_N2_b; | |
| 173 static float var_He_a; | |
| 174 static float var_He_b; | |
| 175 static float var_N2_e; | |
| 176 static float var_He_e; | |
| 177 static float var_N2_halftime; | |
| 178 static float var_He_halftime; | |
| 116 | 179 |
| 164 | 180 static float pres_diluent; // new in v.101 |
| 181 static float deco_diluent; // new in v.101 | |
| 182 static float const_ppO2; // new in v.101 | |
| 183 static float deco_ppO2_change; // new in v.101 | |
| 184 static float deco_ppO2; // new in v.101 | |
| 116 | 185 |
| 171 | 186 static unsigned char calc_gas_switch; // Detected a gas switch. |
| 167 | 187 static float calc_N2_ratio; // new in v.101 |
| 188 static float calc_He_ratio; // new in v.101 | |
| 189 static float CNS_fraction; // new in v.101 | |
| 190 static float float_saturation_multiplier; // new in v.101 | |
| 191 static float float_desaturation_multiplier; // new in v.101 | |
| 192 static float float_deco_distance; // new in v.101 | |
| 193 static char flag_in_divemode; // new in v.108 | |
| 194 | |
| 195 static float deco_gas_change1; // new in v.101 | |
| 196 static float deco_gas_change2; // new in v.109 | |
| 197 static float deco_gas_change3; // new in v.109 | |
| 198 static float deco_gas_change4; // new in v.109 | |
| 199 static float deco_gas_change5; // new in v.109 | |
| 200 | |
| 201 static float deco_N2_ratio1; // new in v.101 | |
| 202 static float deco_He_ratio1; // new in v.101 | |
| 203 static float deco_N2_ratio2; // new in v.109 | |
| 204 static float deco_N2_ratio3; // new in v.109 | |
| 205 static float deco_N2_ratio4; // new in v.109 | |
| 206 static float deco_N2_ratio5; // new in v.109 | |
| 207 static float deco_He_ratio2; // new in v.109 | |
| 208 static float deco_He_ratio3; // new in v.109 | |
| 209 static float deco_He_ratio4; // new in v.109 | |
| 210 static float deco_He_ratio5; // new in v.109 | |
| 211 | |
| 212 | |
| 163 | 213 //---- Bank 6 parameters ----------------------------------------------------- |
| 214 #pragma udata bank6=0x600 | |
| 116 | 215 |
| 164 | 216 static float pres_tissue[32]; |
| 116 | 217 static float pres_tissue_limit[16]; |
| 218 static float sim_pres_tissue_limit[16]; | |
| 219 | |
| 163 | 220 //---- Bank 7 parameters ----------------------------------------------------- |
| 221 #pragma udata bank7=0x700 | |
| 222 | |
| 223 static float sim_pres_tissue[32]; // 32 floats = 128 bytes. | |
| 116 | 224 static float sim_pres_tissue_backup[32]; |
| 225 | |
| 163 | 226 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 227 #pragma udata bank8=0x800 |
| 163 | 228 |
| 116 | 229 static char md_pi_subst[256]; |
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230 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 231 |
| 163 | 232 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 233 #pragma udata bank9=0x900 |
| 116 | 234 |
| 163 | 235 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 236 |
| 164 | 237 // internal, dbg: |
| 167 | 238 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 239 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 240 static float DBG_pres_surface; // new in v.108 | |
| 241 static float DBG_GF_low; // new in v.108 | |
| 242 static float DBG_GF_high; // new in v.108 | |
| 243 static float DBG_const_ppO2; // new in v.108 | |
| 244 static float DBG_deco_ppO2_change; // new in v.108 | |
| 245 static float DBG_deco_ppO2; // new in v.108 | |
| 246 static float DBG_deco_N2_ratio; // new in v.108 | |
| 247 static float DBG_deco_He_ratio; // new in v.108 | |
| 248 static float DBG_deco_gas_change; // new in v.108 | |
| 249 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 250 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 251 static float DBG_float_deco_distance; // new in v.108 | |
| 252 static float DBG_deco_N2_ratio; // new in v.108 | |
| 253 static float DBG_deco_He_ratio; // new in v.108 | |
| 254 static float DBG_N2_ratio; // new in v.108 | |
| 255 static float DBG_He_ratio; // new in v.108 | |
| 256 | |
| 167 | 257 ////////////////////////////////////////////////////////////////////////////// |
| 258 ////////////////////////////////////////////////////////////////////////////// | |
| 259 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 260 ////////////////////////////////////////////////////////////////////////////// | |
| 261 ////////////////////////////////////////////////////////////////////////////// | |
| 262 // | |
| 263 // End of PROM code is 17F00, So push tables on PROM top... | |
| 264 // | |
| 265 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 266 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 267 |
| 167 | 268 // Magic table to compute the MD2 HASH |
| 269 // | |
| 270 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 116 | 271 rom const rom unsigned int md_pi[] = |
| 272 { | |
| 273 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 274 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 275 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 276 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 277 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 278 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 279 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 280 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 281 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 282 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 283 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 284 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 285 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 286 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 287 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 288 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 289 }; | |
| 290 | |
| 167 | 291 ////////////////////////////////////////////////////////////////////////////// |
| 292 ////////////////////////////////////////////////////////////////////////////// | |
| 293 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 294 ////////////////////////////////////////////////////////////////////////////// | |
| 295 ////////////////////////////////////////////////////////////////////////////// | |
| 296 // | |
| 116 | 297 // all new in v.102 |
| 298 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 299 | |
| 300 #pragma code p2_deco = 0x0C000 | |
| 301 | |
| 167 | 302 ////////////////////////////////////////////////////////////////////////////// |
| 303 // DBS - debug on start of dive | |
| 304 // | |
| 305 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 306 { |
| 167 | 307 overlay char i; // Local loop index. |
| 308 | |
| 309 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 310 int_O_DBS_bitfield = 0; |
| 311 int_O_DBS2_bitfield = 0; | |
| 312 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 313 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 314 else | |
| 315 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 316 int_O_DBG_post_bitfield = 0; | |
| 167 | 317 |
| 318 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 319 char_O_NDL_at_20mtr = 255; |
| 320 | |
| 167 | 321 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 322 DBG_N2_ratio = N2_ratio; |
| 323 DBG_He_ratio = He_ratio; | |
| 324 DBG_char_I_deco_model = char_I_deco_model; | |
| 325 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 326 DBG_pres_surface = pres_surface; | |
| 327 DBG_GF_low = GF_low; | |
| 328 DBG_GF_high = GF_high; | |
| 329 DBG_const_ppO2 = const_ppO2; | |
| 330 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 331 DBG_deco_ppO2 = deco_ppO2; | |
| 167 | 332 DBG_deco_N2_ratio = deco_N2_ratio1; |
| 333 DBG_deco_He_ratio = deco_He_ratio1; | |
| 334 DBG_deco_gas_change = deco_gas_change1; | |
| 116 | 335 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 336 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 337 DBG_float_deco_distance = float_deco_distance; | |
| 338 | |
| 167 | 339 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 340 if(char_I_deco_model) |
| 341 int_O_DBS_bitfield |= DBS_mode; | |
| 342 if(const_ppO2) | |
| 343 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 344 for(i = 16; i < 32; i++) |
| 345 if(pres_tissue[i]) | |
| 116 | 346 int_O_DBS_bitfield |= DBS_HE_sat; |
| 347 if(deco_ppO2_change) | |
| 348 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 349 if(float_saturation_multiplier < 0.99) | |
| 350 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 351 if(float_saturation_multiplier > 1.3) | |
| 352 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 353 if(GF_low < 0.19) | |
| 354 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 355 if(GF_low > 1.01) | |
| 356 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 357 if(GF_high < 0.6) | |
| 358 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 359 if(GF_high > 1.01) | |
| 360 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 361 if((N2_ratio + He_ratio) > 0.95) | |
| 362 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 363 if((N2_ratio + He_ratio) < 0.05) | |
| 364 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 365 if(float_deco_distance > 0.25) | |
| 366 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 367 if(char_I_depth_last_deco > 8) | |
| 368 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 167 | 369 if(DBG_deco_gas_change && ((deco_N2_ratio1 + deco_He_ratio1) > 0.95)) |
| 116 | 370 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 167 | 371 if(DBG_deco_gas_change && ((deco_N2_ratio1 + deco_He_ratio1) < 0.05)) |
| 116 | 372 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 373 if(pres_respiration > 3.0) | |
| 374 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 375 if(pres_surface - pres_respiration > 0.2) | |
| 376 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 377 if(pres_surface < 0.75) | |
| 378 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 379 if(pres_surface > 1.11) | |
| 380 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 381 if(float_desaturation_multiplier < 0.70) | |
| 382 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 383 if(float_desaturation_multiplier > 1.01) | |
| 384 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 385 if(GF_low > GF_high) | |
| 386 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 387 } | |
| 388 | |
| 167 | 389 ////////////////////////////////////////////////////////////////////////////// |
| 390 // DBG - set DBG to end_of_dive | |
| 391 // | |
| 392 static void set_dbg_end_of_dive(void) | |
| 116 | 393 { |
| 394 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 395 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 396 } | |
| 397 | |
| 167 | 398 ////////////////////////////////////////////////////////////////////////////// |
| 399 // DBG - NDL at first 20 m. hit | |
| 400 // | |
| 401 static void check_ndl(void) | |
| 116 | 402 { |
| 167 | 403 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 404 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 405 ) | |
| 116 | 406 { |
| 167 | 407 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 408 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 409 char_O_NDL_at_20mtr = 254; |
| 116 | 410 } |
| 411 } | |
| 412 | |
| 167 | 413 ////////////////////////////////////////////////////////////////////////////// |
| 414 // DBG - multi main during dive | |
| 415 // | |
| 184 | 416 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 417 { |
| 167 | 418 overlay unsigned int temp_DBS = 0; |
| 419 overlay char i; // Local loop index. | |
| 420 | |
| 116 | 421 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 422 temp_DBS |= DBG_c_gas; | |
| 423 if(DBG_const_ppO2 != const_ppO2) | |
| 424 temp_DBS |= DBG_c_ppO2; | |
| 167 | 425 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 426 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 427 ) | |
| 116 | 428 temp_DBS |= DBG_CdeSAT; |
| 429 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 430 temp_DBS |= DBG_C_MODE; | |
| 431 if(DBG_pres_surface != pres_surface) | |
| 432 temp_DBS |= DBG_C_SURF; | |
| 167 | 433 |
| 434 if( !DBS_HE_sat && !He_ratio) | |
| 435 for(i = 16; i < 32; i++) | |
| 436 if(pres_tissue[i]) | |
| 116 | 437 temp_DBS |= DBG_HEwoHE; |
| 167 | 438 |
| 116 | 439 if(DBG_deco_ppO2 != deco_ppO2) |
| 440 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 441 |
| 442 if( DBG_deco_gas_change != deco_gas_change1 | |
| 443 || DBG_deco_N2_ratio != deco_N2_ratio1 | |
| 444 || DBG_deco_He_ratio != deco_He_ratio1 ) | |
| 116 | 445 temp_DBS |= DBG_C_DGAS; |
| 167 | 446 |
| 116 | 447 if(DBG_float_deco_distance != float_deco_distance) |
| 448 temp_DBS |= DBG_C_DIST; | |
| 449 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 450 temp_DBS |= DBG_C_LAST; | |
| 167 | 451 if( DBG_GF_low != GF_low |
| 452 || DBG_GF_high != GF_high ) | |
| 116 | 453 temp_DBS |= DBG_C_GF; |
| 454 if(pres_respiration > 13.0) | |
| 455 temp_DBS |= DBG_PHIGH; | |
| 456 if(pres_surface - pres_respiration > 0.2) | |
| 457 temp_DBS |= DBG_PLOW; | |
| 458 if(is_post_check) | |
| 459 int_O_DBG_post_bitfield |= temp_DBS; | |
| 460 else | |
| 461 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 462 } | |
| 463 | |
| 167 | 464 ////////////////////////////////////////////////////////////////////////////// |
| 465 // DBG - prior to calc. of dive | |
| 466 // | |
| 467 static void check_pre_dbg(void) | |
| 116 | 468 { |
| 469 check_dbg(0); | |
| 470 } | |
| 471 | |
| 167 | 472 ////////////////////////////////////////////////////////////////////////////// |
| 473 // DBG - after decocalc of dive | |
| 474 // | |
| 475 static void check_post_dbg(void) | |
| 116 | 476 { |
| 477 check_dbg(1); | |
| 478 } | |
| 479 | |
| 165 | 480 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 481 ////////////////////////////////////////////////////////////////////////////// |
| 482 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 483 ////////////////////////////////////////////////////////////////////////////// | |
| 484 ////////////////////////////////////////////////////////////////////////////// | |
| 485 | |
| 184 | 486 static int read_custom_function(PARAMETER unsigned char cf) |
| 167 | 487 { |
| 184 | 488 #ifdef CROSS_COMPILE |
| 489 extern unsigned short custom_functions[]; | |
| 490 return custom_functions[cf]; | |
| 491 #else | |
| 167 | 492 extern unsigned char hi, lo; |
| 493 extern void getcustom15(); | |
| 494 _asm | |
| 495 movff cf,WREG | |
| 496 call getcustom15,0 | |
| 497 movff lo,PRODL | |
| 498 movff hi,PRODH | |
| 499 _endasm | |
| 184 | 500 #endif |
| 167 | 501 } |
| 502 | |
| 503 ////////////////////////////////////////////////////////////////////////////// | |
| 165 | 504 // read buhlmann tables for compatriment ci |
| 167 | 505 // If period == 0 : 2sec interval |
| 506 // 1 : 1 min interval | |
| 507 // 2 : 10 min interval. | |
| 184 | 508 static void read_buhlmann_coefficients(PARAMETER char period) |
| 165 | 509 { |
| 184 | 510 #ifndef CROSS_COMPILE |
| 167 | 511 // Note: we don't use far rom pointer, because the |
| 512 // 24 bits is to complex, hence we have to set | |
| 513 // the UPPER page ourself... | |
| 514 // --> Set zero if tables are moved to lower pages ! | |
| 515 _asm | |
| 516 movlw 1 | |
| 517 movwf TBLPTRU,0 | |
| 518 _endasm | |
| 184 | 519 #endif |
| 167 | 520 |
| 165 | 521 var_N2_a = buhlmann_a[ci]; |
| 522 var_N2_b = buhlmann_b[ci]; | |
| 167 | 523 var_He_a = (buhlmann_a+16)[ci]; |
| 524 var_He_b = (buhlmann_b+16)[ci]; | |
| 525 | |
| 165 | 526 // Check reading consistency: |
| 527 if( (var_N2_a < 0.231) | |
| 528 || (var_N2_a > 1.27) | |
| 529 || (var_N2_b < 0.504) | |
| 530 || (var_N2_b > 0.966) | |
| 531 || (var_He_a < 0.510) | |
| 532 || (var_He_a > 1.75) | |
| 533 || (var_He_b < 0.423) | |
| 534 || (var_He_b > 0.927) | |
| 535 ) | |
| 536 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 167 | 537 |
| 165 | 538 // Integration intervals. |
| 167 | 539 switch(period) |
| 165 | 540 { |
| 167 | 541 case -1://---- no interval ----------------------------------------------- |
| 542 var_N2_e = var_He_e = 0.0; | |
| 543 break; | |
| 544 | |
| 165 | 545 case 0: //---- 2 sec ----------------------------------------------------- |
| 546 var_N2_e = e2secs[ci]; | |
| 167 | 547 var_He_e = (e2secs+16)[ci]; |
| 165 | 548 |
| 549 // Check reading consistency: | |
| 550 if( (var_N2_e < 0.0000363) | |
| 551 || (var_N2_e > 0.00577) | |
| 552 || (var_He_e < 0.0000961) | |
| 553 || (var_He_e > 0.150) | |
| 554 ) | |
| 555 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 556 | |
| 557 break; | |
| 558 | |
| 559 case 1: //---- 1 min ----------------------------------------------------- | |
| 560 var_N2_e = e1min[ci]; | |
| 167 | 561 var_He_e = (e1min+16)[ci]; |
| 165 | 562 |
| 563 // Check reading consistency: | |
| 564 if( (var_N2_e < 1.09E-3) | |
| 565 || (var_N2_e > 0.1592) | |
| 566 || (var_He_e < 0.00288) | |
| 567 || (var_He_e > 0.3682) | |
| 568 ) | |
| 569 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 570 | |
| 571 break; | |
| 572 | |
| 573 case 2: //---- 10 min ---------------------------------------------------- | |
| 574 var_N2_e = e10min[ci]; | |
| 167 | 575 var_He_e = (e10min+16)[ci]; |
| 165 | 576 |
| 577 // Check reading consistency: | |
| 578 if( (var_N2_e < 0.01085) | |
| 579 || (var_N2_e > 0.82323) | |
| 580 || (var_He_e < 0.02846) | |
| 581 || (var_He_e > 0.98986) | |
| 582 ) | |
| 583 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 584 | |
| 585 break; | |
| 586 } | |
| 587 } | |
| 588 | |
| 589 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 590 // calc_next_decodepth_GF |
| 165 | 591 // |
| 116 | 592 // new in v.102 |
| 165 | 593 // |
| 116 | 594 // INPUT, changing during dive: |
| 192 | 595 // low_depth |
| 167 | 596 // |
| 116 | 597 // INPUT, fixed during dive: |
| 167 | 598 // pres_surface |
| 599 // GF_delta | |
| 600 // GF_high | |
| 601 // GF_low | |
| 171 | 602 // char_I_depth_last_deco |
| 167 | 603 // float_deco_distance |
| 604 // | |
| 116 | 605 // OUTPUT |
| 171 | 606 // locked_GF_step |
| 167 | 607 // temp_deco |
| 608 // temp_depth_limt | |
| 192 | 609 // low_depth |
| 167 | 610 // |
| 171 | 611 static void calc_nextdecodepth(void) |
| 167 | 612 { |
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613 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 614 if (char_I_deco_model == 1) |
| 615 { | |
| 192 | 616 // Recompute leading gas limit, at current depth: |
| 617 overlay float depth = (temp_deco - pres_surface) / 0.09995; | |
| 618 assert( depth >= 0.0 ); | |
| 167 | 619 |
| 192 | 620 if( depth > low_depth ) |
| 621 sim_limit( GF_low ); | |
| 622 else | |
| 623 sim_limit( GF_high - depth * locked_GF_step ); | |
| 624 | |
| 625 // Stops are needed ? | |
| 626 if( sim_lead_tissue_limit > pres_surface ) | |
| 627 { | |
| 628 // Deepest stop, in meter. | |
| 629 overlay unsigned char first_stop = 3 * (int)(0.99 + (sim_lead_tissue_limit - pres_surface) / 0.29985); | |
| 630 assert( first_stop < 128 ); | |
| 171 | 631 |
| 192 | 632 // Apply correction for the first stop. |
| 633 if( first_stop == 3 ) // new in v104 | |
| 634 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 635 |
| 192 | 636 // Is it a new deepest first stop ? If yes this is the reference for |
| 637 // the varying gradient factor. So reset that: | |
| 638 if( first_stop > low_depth ) | |
| 639 { | |
| 640 // Store the deepest stop depth, as reference for GF_low. | |
| 641 low_depth = first_stop; | |
| 642 locked_GF_step = GF_delta / low_depth; | |
| 643 } | |
| 171 | 644 |
| 192 | 645 // Check all stops until one is higher than tolerated presure |
| 646 while(first_stop > 0) | |
| 647 { | |
| 648 overlay unsigned char next_stop; // Next index (0..30) | |
| 649 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 650 |
| 192 | 651 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 652 next_stop = 0; | |
| 653 else | |
| 654 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 655 if( first_stop == 3 ) | |
| 656 first_stop = char_I_depth_last_deco; | |
| 167 | 657 |
| 192 | 658 pres_stop = next_stop * 0.09995 // Meters to bar |
| 659 + pres_surface; | |
| 660 | |
| 661 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 662 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 663 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 664 |
| 192 | 665 // upper limit (lowest pressure tolerated): |
| 666 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 667 break; | |
| 668 | |
| 669 // Else, validate that stop and loop... | |
| 670 first_stop = next_stop; | |
| 671 } | |
| 171 | 672 |
| 192 | 673 // first_stop is the last validated depth found: |
| 674 temp_depth_limit = first_stop; // Stop depth, in meter. | |
| 675 temp_deco = first_stop * 0.09995 // Convert to bars, too. | |
| 676 + pres_surface; | |
| 677 if (first_stop > 0) | |
| 678 temp_deco += float_deco_distance; // Add security distance (bars too) | |
| 679 } | |
| 171 | 680 else |
| 192 | 681 { |
| 682 temp_deco = pres_surface; // surface ambient presure | |
| 683 temp_depth_limit = 0; // stop depth, in meter. | |
| 684 } | |
| 116 | 685 } |
| 167 | 686 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 687 { |
| 192 | 688 overlay float pres_gradient; |
| 689 | |
| 690 // Original model | |
| 116 | 691 // optimized in v.101 |
| 171 | 692 // char_I_depth_last_deco included in v.101 |
| 116 | 693 |
| 192 | 694 // Compute sim_lead_tissue_limit too, but just once. |
| 695 sim_limit(1.0); | |
| 696 | |
| 697 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 698 if (pres_gradient >= 0) |
| 116 | 699 { |
| 192 | 700 pres_gradient /= 0.29985; // Bar --> stop number; |
| 701 temp_depth_limit = 3 * (int) (pres_gradient + 0.99); // --> meter : depth for deco | |
| 171 | 702 if (temp_depth_limit == 0) // At surface ? |
| 116 | 703 temp_deco = pres_surface; |
| 704 else | |
| 705 { | |
| 171 | 706 if (temp_depth_limit < char_I_depth_last_deco) // Implement last stop at 4m/5m/6m... |
| 707 temp_depth_limit = char_I_depth_last_deco; | |
| 708 temp_deco = (temp_depth_limit * 0.09995) // depth for deco [bar] = depth | |
| 709 + float_deco_distance // + security margin | |
| 710 + pres_surface; // + surface ambient presure | |
| 711 } | |
| 712 } | |
| 116 | 713 else |
| 714 { | |
| 171 | 715 temp_deco = pres_surface; // surface ambient presure |
| 192 | 716 temp_depth_limit = 0; // stop depth, in meter. |
| 171 | 717 } |
| 718 } | |
| 167 | 719 } |
| 116 | 720 |
| 167 | 721 ////////////////////////////////////////////////////////////////////////////// |
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722 // copy_deco_table |
| 167 | 723 // |
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724 // Buffer the stops, once computed, so we can continue to display them |
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725 // while computing the next set. |
| 167 | 726 // |
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727 static void copy_deco_table(void) |
| 116 | 728 { |
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729 // Copy depth of the first (deepest) stop, because when reversing |
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730 // order, it will be hard to find... |
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731 char_O_first_deco_depth = internal_deco_depth[0]; |
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732 char_O_first_deco_time = internal_deco_time [0]; |
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733 |
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734 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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735 { |
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736 overlay unsigned char x, y; |
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737 |
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738 //---- First: search the first non-null depth |
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739 for(x=31; x != 0; --x) |
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740 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 741 |
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742 //---- Second: copy to output table (in reverse order) |
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743 for(y=0; y<32; y++, --x) |
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744 { |
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745 char_O_deco_depth[y] = internal_deco_depth[x]; |
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746 char_O_deco_time [y] = internal_deco_time [x]; |
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747 |
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748 // Stop only once the last transfer is done. |
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749 if( x == 0 ) break; |
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750 } |
| 116 | 751 |
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752 //---- Third: fill table end with null |
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753 for(y++; y<32; y++) |
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754 { |
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755 char_O_deco_time [y] = 0; |
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756 char_O_deco_depth[y] = 0; |
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757 } |
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758 } |
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759 else //---- Straight copy ------------------------------------------------ |
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760 { |
| 167 | 761 overlay unsigned char x; |
| 762 | |
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763 for(x=0; x<32; x++) |
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764 { |
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765 char_O_deco_depth[x] = internal_deco_depth[x]; |
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766 char_O_deco_time [x] = internal_deco_time [x]; |
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767 } |
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768 } |
| 167 | 769 } |
| 116 | 770 |
| 167 | 771 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 772 // temp_tissue_safety // |
| 167 | 773 // |
| 116 | 774 // outsourced in v.102 |
| 167 | 775 // |
| 776 // Apply safety factors for brand ZH-L16 model. | |
| 777 // | |
| 778 static void temp_tissue_safety(void) | |
| 116 | 779 { |
| 167 | 780 if( char_I_deco_model == 0 ) |
| 116 | 781 { |
| 782 if (temp_tissue < 0.0) | |
| 126 | 783 temp_tissue *= float_desaturation_multiplier; |
| 116 | 784 else |
| 126 | 785 temp_tissue *= float_saturation_multiplier; |
| 116 | 786 } |
| 167 | 787 } |
| 116 | 788 |
| 167 | 789 ////////////////////////////////////////////////////////////////////////////// |
| 790 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 791 // ** THE JUMP-IN CODE ** |
| 792 // ** for the asm code ** | |
| 167 | 793 ////////////////////////////////////////////////////////////////////////////// |
| 794 ////////////////////////////////////////////////////////////////////////////// | |
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795 |
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796 void fillDataStack(void) |
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797 { |
| 184 | 798 #ifndef CROSS_COMPILE |
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799 _asm |
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800 LFSR 1,C_STACK |
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801 MOVLW 0xCC |
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802 loop: MOVWF POSTINC1,0 |
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803 TSTFSZ FSR1L,0 |
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804 BRA loop |
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805 |
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806 LFSR 1,C_STACK |
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807 LFSR 2,C_STACK |
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808 _endasm |
| 184 | 809 #endif |
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810 } |
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811 |
| 167 | 812 ////////////////////////////////////////////////////////////////////////////// |
|
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813 // When calling C code from ASM context, the data stack pointer and |
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814 // frames should be reset. Bank3 is dedicated to the stack (see the |
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815 // .lkr script). |
| 184 | 816 #ifdef CROSS_COMPILE |
| 817 # define RESET_C_STACK | |
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818 #else |
| 184 | 819 # ifdef __DEBUG |
| 820 # define RESET_C_STACK fillDataStack(); | |
| 821 # else | |
| 822 # define RESET_C_STACK \ | |
| 823 _asm \ | |
| 824 LFSR 1, C_STACK \ | |
| 825 LFSR 2, C_STACK \ | |
| 826 _endasm | |
| 827 # endif | |
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828 #endif |
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829 |
| 167 | 830 ////////////////////////////////////////////////////////////////////////////// |
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831 // Called every 2 seconds during diving. |
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832 // update tissues every time. |
| 184 | 833 // |
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834 // Every 6 seconds (or slower when TTS > 16): |
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835 // - update deco table (char_O_deco_time/depth) with new values. |
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836 // - update ascent time, |
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837 // - set status to zero (so we can check there is new results). |
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838 // |
| 116 | 839 void deco_calc_hauptroutine(void) |
| 840 { | |
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841 RESET_C_STACK |
| 116 | 842 calc_hauptroutine(); |
| 843 int_O_desaturation_time = 65535; | |
| 844 } | |
| 845 | |
| 167 | 846 ////////////////////////////////////////////////////////////////////////////// |
| 847 | |
| 116 | 848 void deco_calc_without_deco(void) |
| 849 { | |
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850 RESET_C_STACK |
| 192 | 851 calc_wo_deco_step_2s(); |
| 116 | 852 deco_calc_desaturation_time(); |
| 853 } | |
| 854 | |
| 167 | 855 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 856 // Reset decompression model: |
| 857 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 858 // + Reset last stop to 0m | |
| 859 // + Reset all model output. | |
| 116 | 860 void deco_clear_tissue(void) |
| 861 { | |
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862 RESET_C_STACK |
| 116 | 863 clear_tissue(); |
| 864 } | |
| 865 | |
| 167 | 866 ////////////////////////////////////////////////////////////////////////////// |
| 867 | |
| 116 | 868 void deco_calc_wo_deco_step_1_min(void) |
| 869 { | |
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870 RESET_C_STACK |
| 116 | 871 calc_wo_deco_step_1_min(); |
| 872 char_O_deco_status = 3; // surface new in v.102 overwrites value of calc_wo_deco_step_1_min | |
| 873 deco_calc_desaturation_time(); | |
| 874 } | |
| 875 | |
| 167 | 876 ////////////////////////////////////////////////////////////////////////////// |
| 877 | |
| 116 | 878 void deco_debug(void) |
| 879 { | |
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880 RESET_C_STACK |
| 116 | 881 } |
| 882 | |
| 167 | 883 ////////////////////////////////////////////////////////////////////////////// |
| 884 // clear_tissue | |
| 885 // | |
| 165 | 886 // optimized in v.101 (var_N2_a) |
| 167 | 887 // |
| 888 // preload tissues with standard pressure for the given ambient pressure. | |
| 889 // Note: fixed N2_ratio for standard air. | |
| 116 | 890 |
| 167 | 891 static void clear_tissue(void) |
| 116 | 892 { |
| 893 flag_in_divemode = 0; | |
| 894 int_O_DBS_bitfield = 0; | |
| 895 int_O_DBS2_bitfield = 0; | |
| 896 int_O_DBG_pre_bitfield = 0; | |
| 897 int_O_DBG_post_bitfield = 0; | |
| 898 char_O_NDL_at_20mtr = 255; | |
| 899 | |
| 167 | 900 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 901 N2_ratio = 0.7902; | |
| 126 | 902 pres_respiration = (float)int_I_pres_respiration / 1000.0; |
| 164 | 903 |
| 167 | 904 for(ci=0; ci<16; ci++) |
| 126 | 905 { |
| 164 | 906 // cycle through the 16 b"uhlmann tissues |
| 165 | 907 overlay float p = N2_ratio * (pres_respiration - 0.0627); |
| 164 | 908 pres_tissue[ci] = p; |
| 126 | 909 |
| 184 | 910 read_buhlmann_coefficients(-1); |
| 165 | 911 |
| 912 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 913 if( p < 0.0 ) |
| 914 p = 0.0; | |
| 915 pres_tissue_limit[ci] = p; | |
| 916 | |
| 917 // cycle through the 16 b"uhlmann tissues for Helium | |
| 167 | 918 (pres_tissue+16)[ci] = 0.0; |
| 126 | 919 } // for 0 to 16 |
| 116 | 920 |
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921 clear_deco_table(); |
| 126 | 922 char_O_deco_status = 0; |
| 923 char_O_nullzeit = 0; | |
| 168 | 924 int_O_ascenttime = 0; |
| 126 | 925 char_O_gradient_factor = 0; |
| 926 char_O_relative_gradient_GF = 0; | |
| 184 | 927 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 928 } |
| 116 | 929 |
| 167 | 930 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 931 // calc_wo_deco_step_2s |
| 167 | 932 // |
| 116 | 933 // optimized in v.101 (float_..saturation_multiplier) |
| 167 | 934 // |
| 935 // Note: fixed N2_ratio for standard air. | |
| 116 | 936 |
| 192 | 937 static void calc_wo_deco_step_2s(void) |
| 116 | 938 { |
| 167 | 939 N2_ratio = 0.7902; // Sum as stated in b"uhlmann |
| 126 | 940 pres_respiration = (float)int_I_pres_respiration / 1000.0; // assembler code uses different digit system |
| 192 | 941 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 | 942 temp_atem = N2_ratio * (pres_respiration - 0.0627); // 0.0627 is the extra pressure in the body |
| 943 temp2_atem = 0.0; | |
| 944 float_desaturation_multiplier = char_I_desaturation_multiplier / 100.0; | |
| 945 float_saturation_multiplier = char_I_saturation_multiplier / 100.0; | |
| 946 | |
| 192 | 947 calc_tissue(0); // update the pressure in the 32 tissues in accordance with the new ambient pressure for 2 seconds. |
| 126 | 948 |
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949 clear_deco_table(); |
| 126 | 950 char_O_deco_status = 0; |
| 951 char_O_nullzeit = 0; | |
| 168 | 952 int_O_ascenttime = 0; |
| 126 | 953 calc_gradient_factor(); |
| 167 | 954 } |
| 116 | 955 |
| 167 | 956 ////////////////////////////////////////////////////////////////////////////// |
| 957 // calc_hauptroutine | |
| 958 // | |
| 959 // this is the major code in dive mode calculates: | |
| 116 | 960 // the tissues, |
| 167 | 961 // the bottom time, |
| 962 // and simulates the ascend with all deco stops. | |
| 171 | 963 // |
| 964 // The deco_state sequence is : | |
| 965 // 3 (at surface) | |
| 966 // +---> 0 : calc nullzeit | |
| 967 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 968 // | +-> 1 : simulate up to 16min of stops. | |
| 969 // | +------< not finished | |
| 970 // +--------< finish | |
| 971 // | |
| 167 | 972 static void calc_hauptroutine(void) |
| 116 | 973 { |
| 186 | 974 static float backup_GF_step; |
| 192 | 975 static unsigned char backup_low_depth; |
| 186 | 976 |
| 116 | 977 calc_hauptroutine_data_input(); |
| 978 | |
| 979 if(!flag_in_divemode) | |
| 980 { | |
| 981 flag_in_divemode = 1; | |
| 982 create_dbs_set_dbg_and_ndl20mtr(); | |
| 983 } | |
| 984 else | |
| 985 check_pre_dbg(); | |
| 986 | |
| 987 calc_hauptroutine_update_tissues(); | |
| 988 calc_gradient_factor(); | |
| 989 | |
| 167 | 990 // toggle between calculation for nullzeit (bottom time), |
| 991 // deco stops | |
| 992 // and more deco stops (continue) | |
| 993 switch( char_O_deco_status ) | |
| 116 | 994 { |
| 186 | 995 case 3: //---- At surface: start a new dive ------------------------------ |
| 996 clear_deco_table(); | |
| 997 copy_deco_table(); | |
| 998 update_startvalues(); | |
| 192 | 999 low_depth = 0; |
| 1000 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 1001 backup_low_depth = 255; // backup is empty... | |
| 186 | 1002 break; |
| 1003 | |
| 167 | 1004 case 0: //---- bottom time ----------------------------------------------- |
| 1005 update_startvalues(); | |
| 1006 calc_nullzeit(); | |
| 1007 check_ndl(); | |
| 186 | 1008 char_O_deco_status = 2; // calc ascent next time. |
| 1009 break; | |
| 1010 | |
| 1011 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 1012 // Backup ascention state, ie if we already fixed the low GF reference, | |
| 1013 // and its value. | |
| 1014 backup_GF_step = locked_GF_step; | |
| 192 | 1015 backup_low_depth = low_depth; |
| 186 | 1016 |
| 1017 sim_ascent_to_first_stop(); | |
| 1018 char_O_deco_status = 1; // Cacl stops next time. | |
| 167 | 1019 break; |
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1020 |
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1021 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1022 calc_hauptroutine_calc_deco(); |
| 186 | 1023 |
| 1024 // If simulation is finished, restore the GF low reference, so that | |
| 1025 // next ascent simulation is done from the current depth: | |
| 192 | 1026 if( char_O_deco_status == 0 && backup_low_depth != 255) |
| 186 | 1027 { |
| 1028 locked_GF_step = backup_GF_step; | |
| 192 | 1029 low_depth = backup_low_depth; |
| 1030 backup_low_depth = 255; | |
| 186 | 1031 } |
| 167 | 1032 break; |
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1033 |
| 116 | 1034 } |
| 167 | 1035 |
| 116 | 1036 check_post_dbg(); |
| 1037 } | |
| 1038 | |
| 167 | 1039 ////////////////////////////////////////////////////////////////////////////// |
| 1040 // calc_hauptroutine_data_input | |
| 1041 // | |
| 1042 // Reset all C-code dive parameters from their ASM-code values. | |
| 1043 // Detect gas change condition. | |
| 1044 // | |
| 116 | 1045 void calc_hauptroutine_data_input(void) |
| 1046 { | |
| 167 | 1047 overlay int int_temp; |
| 126 | 1048 |
| 167 | 1049 pres_respiration = int_I_pres_respiration / 1000.0; |
| 1050 pres_surface = int_I_pres_surface / 1000.0; | |
| 1051 N2_ratio = char_I_N2_ratio / 100.0; | |
| 1052 He_ratio = char_I_He_ratio / 100.0; | |
| 1053 deco_N2_ratio1 = char_I_deco_N2_ratio1 / 100.0; | |
| 1054 deco_He_ratio1 = char_I_deco_He_ratio1 / 100.0; | |
| 1055 deco_N2_ratio2 = char_I_deco_N2_ratio2 / 100.0; | |
| 1056 deco_He_ratio2 = char_I_deco_He_ratio2 / 100.0; | |
| 1057 deco_N2_ratio3 = char_I_deco_N2_ratio3 / 100.0; | |
| 1058 deco_He_ratio3 = char_I_deco_He_ratio3 / 100.0; | |
| 1059 deco_N2_ratio4 = char_I_deco_N2_ratio4 / 100.0; | |
| 1060 deco_He_ratio4 = char_I_deco_He_ratio4 / 100.0; | |
| 1061 deco_N2_ratio5 = char_I_deco_N2_ratio5 / 100.0; | |
| 1062 deco_He_ratio5 = char_I_deco_He_ratio5 / 100.0; | |
| 186 | 1063 float_deco_distance = char_I_deco_distance / 100.0; // Get offset is in mbar. |
| 116 | 1064 |
| 126 | 1065 // ____________________________________________________ |
| 1066 // | |
| 1067 // _____________ G A S _ C H A N G E S ________________ | |
| 1068 // ____________________________________________________ | |
| 1069 | |
| 1070 int_temp = (int_I_pres_respiration - int_I_pres_surface) + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 1071 | |
| 167 | 1072 deco_gas_change1 = 0; |
| 126 | 1073 deco_gas_change2 = 0; |
| 1074 deco_gas_change3 = 0; | |
| 1075 deco_gas_change4 = 0; | |
| 1076 deco_gas_change5 = 0; | |
| 116 | 1077 |
| 167 | 1078 if(char_I_deco_gas_change1) |
| 126 | 1079 { |
| 167 | 1080 overlay int int_temp2 = ((int)char_I_deco_gas_change1) * 100; |
| 126 | 1081 if(int_temp > int_temp2) |
| 1082 { | |
| 167 | 1083 deco_gas_change1 = (float)char_I_deco_gas_change1 / 9.995 + pres_surface; |
| 1084 deco_gas_change1 += float_deco_distance; | |
| 126 | 1085 } |
| 1086 } | |
| 1087 if(char_I_deco_gas_change2) | |
| 1088 { | |
| 167 | 1089 overlay int int_temp2 = ((int)char_I_deco_gas_change2) * 100; |
| 126 | 1090 if(int_temp > int_temp2) |
| 1091 { | |
| 1092 deco_gas_change2 = (float)char_I_deco_gas_change2 / 9.995 + pres_surface; | |
| 1093 deco_gas_change2 += float_deco_distance; | |
| 1094 } | |
| 1095 } | |
| 1096 if(char_I_deco_gas_change3) | |
| 1097 { | |
| 167 | 1098 overlay int int_temp2 = ((int)char_I_deco_gas_change3) * 100; |
| 126 | 1099 if(int_temp > int_temp2) |
| 1100 { | |
| 1101 deco_gas_change3 = (float)char_I_deco_gas_change3 / 9.995 + pres_surface; | |
| 1102 deco_gas_change3 += float_deco_distance; | |
| 1103 } | |
| 1104 } | |
| 1105 if(char_I_deco_gas_change4) | |
| 1106 { | |
| 167 | 1107 overlay int int_temp2 = ((int)char_I_deco_gas_change4) * 100; |
| 126 | 1108 if(int_temp > int_temp2) |
| 1109 { | |
| 1110 deco_gas_change4 = (float)char_I_deco_gas_change4 / 9.995 + pres_surface; | |
| 1111 deco_gas_change4 += float_deco_distance; | |
| 1112 } | |
| 1113 } | |
| 1114 if(char_I_deco_gas_change5) | |
| 1115 { | |
| 167 | 1116 overlay int int_temp2 = ((int)char_I_deco_gas_change5) * 100; |
| 126 | 1117 if(int_temp > int_temp2) |
| 1118 { | |
| 1119 deco_gas_change5 = (float)char_I_deco_gas_change5 / 9.995 + pres_surface; | |
| 1120 deco_gas_change5 += float_deco_distance; | |
| 1121 } | |
| 1122 } | |
| 116 | 1123 |
| 126 | 1124 const_ppO2 = (float)char_I_const_ppO2 / 100.0; |
| 1125 deco_ppO2_change = (float)char_I_deco_ppO2_change / 99.95 + pres_surface; | |
| 184 | 1126 deco_ppO2_change += float_deco_distance; |
| 126 | 1127 deco_ppO2 = (float)char_I_deco_ppO2 / 100.0; |
| 1128 float_desaturation_multiplier = char_I_desaturation_multiplier / 100.0; | |
| 1129 float_saturation_multiplier = char_I_saturation_multiplier / 100.0; | |
| 1130 GF_low = (float)char_I_GF_Low_percentage / 100.0; | |
| 1131 GF_high = (float)char_I_GF_High_percentage / 100.0; | |
| 1132 GF_delta = GF_high - GF_low; | |
| 116 | 1133 } |
| 1134 | |
| 167 | 1135 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1136 // |
| 1137 // | |
| 116 | 1138 void calc_hauptroutine_update_tissues(void) |
| 1139 { | |
| 167 | 1140 if (char_I_const_ppO2 == 0) // new in v.101 |
| 1141 pres_diluent = pres_respiration; // new in v.101 | |
| 186 | 1142 else |
| 1143 { | |
| 167 | 1144 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
| 186 | 1145 if (pres_diluent > pres_respiration) // new in v.101 |
| 1146 pres_diluent = pres_respiration; // new in v.101 | |
| 1147 } | |
| 167 | 1148 if (pres_diluent > 0.0627) // new in v.101 |
| 116 | 1149 { |
| 167 | 1150 temp_atem = N2_ratio * (pres_diluent - 0.0627); // changed in v.101 |
| 1151 temp2_atem = He_ratio * (pres_diluent - 0.0627); // changed in v.101 | |
| 116 | 1152 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1153 } | |
| 167 | 1154 else // new in v.101 |
| 116 | 1155 { |
| 167 | 1156 temp_atem = 0.0; // new in v.101 |
| 1157 temp2_atem = 0.0; // new in v.101 | |
| 116 | 1158 char_O_diluent = 0; |
| 1159 } | |
| 1160 | |
| 1161 if(!char_I_step_is_1min) | |
| 192 | 1162 calc_tissue(0); |
| 116 | 1163 else |
| 192 | 1164 calc_tissue(1); |
| 186 | 1165 |
| 192 | 1166 // Calc limit for surface, ie. GF_high. |
| 1167 calc_limit(GF_high); | |
| 186 | 1168 |
| 192 | 1169 int_O_gtissue_limit = (int)(calc_lead_tissue_limit * 1000); |
| 1170 int_O_gtissue_press = (int)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 1171 | |
| 1172 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1173 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1174 { |
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1175 char_O_nullzeit = 0; // deco necessary |
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1176 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1177 } |
| 171 | 1178 } |
| 1179 | |
| 1180 ////////////////////////////////////////////////////////////////////////////// | |
| 1181 // Calculate gas switches | |
| 1182 // | |
| 1183 // | |
| 1184 void check_gas_switch(void) | |
| 1185 { | |
| 1186 calc_N2_ratio = N2_ratio; | |
| 1187 calc_He_ratio = He_ratio; | |
| 1188 | |
| 1189 if (char_I_const_ppO2 == 0) | |
| 1190 { | |
| 1191 deco_diluent = temp_deco; | |
| 1192 calc_gas_switch = 0; | |
| 1193 | |
| 1194 if(deco_gas_change1 && (temp_deco < deco_gas_change1)) | |
| 1195 { | |
| 1196 calc_N2_ratio = deco_N2_ratio1; | |
| 1197 calc_He_ratio = deco_He_ratio1; | |
| 1198 calc_gas_switch = 1; | |
| 1199 } | |
| 1200 if(deco_gas_change2 && (temp_deco < deco_gas_change2)) | |
| 1201 { | |
| 1202 calc_N2_ratio = deco_N2_ratio2; | |
| 1203 calc_He_ratio = deco_He_ratio2; | |
| 1204 calc_gas_switch = 2; | |
| 1205 } | |
| 1206 if(deco_gas_change3 && (temp_deco < deco_gas_change3)) | |
| 1207 { | |
| 1208 calc_N2_ratio = deco_N2_ratio3; | |
| 1209 calc_He_ratio = deco_He_ratio3; | |
| 1210 calc_gas_switch = 3; | |
| 1211 } | |
| 1212 if(deco_gas_change4 && (temp_deco < deco_gas_change4)) | |
| 1213 { | |
| 1214 calc_N2_ratio = deco_N2_ratio4; | |
| 1215 calc_He_ratio = deco_He_ratio4; | |
| 1216 calc_gas_switch = 4; | |
| 1217 } | |
| 1218 if(deco_gas_change5 && (temp_deco < deco_gas_change5)) | |
| 1219 { | |
| 1220 calc_N2_ratio = deco_N2_ratio5; | |
| 1221 calc_He_ratio = deco_He_ratio5; | |
| 1222 calc_gas_switch = 4; | |
| 1223 } | |
| 1224 } | |
| 1225 else | |
| 1226 { | |
| 1227 if (temp_deco > deco_ppO2_change) | |
| 1228 { | |
| 1229 deco_diluent = ((temp_deco - const_ppO2)/(N2_ratio + He_ratio)); | |
| 1230 } | |
| 1231 else | |
| 1232 { | |
| 1233 deco_diluent = ((temp_deco - deco_ppO2)/(N2_ratio + He_ratio)); | |
| 1234 } | |
| 1235 } | |
| 1236 | |
| 1237 if (deco_diluent > temp_deco) | |
| 1238 deco_diluent = temp_deco; | |
| 1239 | |
| 1240 if (deco_diluent > 0.0627) | |
| 1241 { | |
| 1242 temp_atem = calc_N2_ratio * (deco_diluent - 0.0627); | |
| 1243 temp2_atem = calc_He_ratio * (deco_diluent - 0.0627); | |
| 1244 } | |
| 1245 else | |
| 1246 { | |
| 1247 temp_atem = 0.0; | |
| 1248 temp2_atem = 0.0; | |
| 1249 } | |
| 1250 } | |
| 116 | 1251 |
| 167 | 1252 ////////////////////////////////////////////////////////////////////////////// |
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1253 // Compute stops. |
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1254 // |
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1255 // Note: because this can be very long, break on 16 iterations, and set state |
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1256 // to 0 when finished, or to 1 when needing to continue. |
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1257 // |
| 116 | 1258 void calc_hauptroutine_calc_deco(void) |
| 1259 { | |
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1260 overlay unsigned char loop; |
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1261 |
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1262 for(loop = 0; loop < 16; ++loop) |
| 116 | 1263 { |
| 171 | 1264 calc_nextdecodepth(); |
| 116 | 1265 |
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1266 //---- Finish computations once surface is reached ------------------- |
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1267 if( temp_depth_limit <= 0 ) |
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1268 { |
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1269 copy_deco_table(); |
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1270 calc_ascenttime(); |
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1271 char_O_deco_status = 0; // calc nullzeit next time. |
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1272 return; |
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1273 } |
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1274 |
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1275 //---- Else, continue simulating the stops --------------------------- |
| 186 | 1276 check_gas_switch(); // Also updates ppN2 and ppHe. |
| 1277 | |
| 192 | 1278 sim_tissue(1); // Simulate compartiments for 1 minute. |
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1279 update_deco_table(); // Add one minute stops. |
| 116 | 1280 } |
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1281 |
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1282 // Surface not reached, need more stops... |
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1283 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1284 } |
| 1285 | |
| 167 | 1286 ////////////////////////////////////////////////////////////////////////////// |
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1287 // Simulation ascention to first deco stop. |
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1288 // |
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1289 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1290 // there is no need to break on more that 16 iterations |
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1291 // (or we are already in deep shit). |
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1292 // |
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1293 void sim_ascent_to_first_stop(void) |
| 116 | 1294 { |
| 171 | 1295 update_startvalues(); |
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1296 clear_deco_table(); |
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1297 |
| 116 | 1298 temp_deco = pres_respiration; |
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1299 |
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1300 // Loop until first top or surface is reached. |
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1301 for(;;) |
| 116 | 1302 { |
| 192 | 1303 temp_deco -= 1.0; // Ascent 1 min, at 10m/min. == 1bar/min. |
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1304 |
| 192 | 1305 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1306 sim_limit(GF_low); | |
| 116 | 1307 |
| 192 | 1308 // Did we reach first stop ? |
| 1309 if( temp_deco <= sim_lead_tissue_limit ) | |
| 171 | 1310 break; //Yes: finished ! |
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1311 |
| 171 | 1312 // Next stop is surface ? |
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1313 if( temp_deco <= pres_surface ) |
| 171 | 1314 break; // Yes: finished too. |
| 1315 | |
| 192 | 1316 //---- Simulat gas switches, and compute ppN2/ppHe at half the ascent: |
| 1317 temp_deco += 0.5; // Check gas change 5 meter below new depth. | |
| 171 | 1318 check_gas_switch(); |
| 192 | 1319 temp_deco -= 0.5; // Back to new depth. |
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1320 |
| 192 | 1321 // Then simulate with the new gas pressures... (1min) |
| 1322 sim_tissue(1); | |
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1323 } |
| 192 | 1324 temp_deco += 1.0; // Restore last correct depth. |
| 167 | 1325 } |
| 116 | 1326 |
| 167 | 1327 ////////////////////////////////////////////////////////////////////////////// |
| 1328 // calc_tissue | |
| 1329 // | |
| 116 | 1330 // optimized in v.101 |
| 167 | 1331 // |
| 184 | 1332 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1333 { |
| 126 | 1334 for (ci=0;ci<16;ci++) |
| 1335 { | |
| 184 | 1336 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1337 |
| 126 | 1338 // N2 |
| 165 | 1339 temp_tissue = (temp_atem - pres_tissue[ci]) * var_N2_e; |
| 126 | 1340 temp_tissue_safety(); |
| 167 | 1341 pres_tissue[ci] += temp_tissue; |
| 165 | 1342 |
| 126 | 1343 // He |
| 167 | 1344 temp_tissue = (temp2_atem - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1345 temp_tissue_safety(); |
| 167 | 1346 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1347 } |
| 167 | 1348 } |
| 116 | 1349 |
| 167 | 1350 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1351 // calc_limit |
| 167 | 1352 // |
| 192 | 1353 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1354 // |
| 192 | 1355 static void calc_limit(PARAMETER float GF_current) |
| 167 | 1356 { |
| 192 | 1357 char_O_gtissue_no = 255; |
| 1358 calc_lead_tissue_limit = 0.0; | |
| 1359 | |
| 1360 for (ci=0;ci<16;ci++) | |
| 1361 { | |
| 1362 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1363 | |
| 1364 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
| 1365 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
| 1366 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1367 |
| 192 | 1368 // Apply the Eric Baker's varying gradient factor correction. |
| 1369 // Note: the correction factor depends both on GF and b, | |
| 1370 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1371 // so that can change who is the leading gas... | |
| 1372 // Note: Also depends of the GF. So the calcul is different for | |
| 1373 // GF_low, current GF, or GF_high... | |
| 1374 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1375 // hence what would happend at surface, | |
| 1376 // hence at GF_high. | |
| 1377 if( char_I_deco_model == 1 ) | |
| 1378 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1379 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1380 else | |
| 1381 p = (p - var_N2_a) * var_N2_b; | |
| 1382 if( p < 0 ) p = 0; | |
| 1383 | |
| 1384 pres_tissue_limit[ci] = p; | |
| 1385 if( p > calc_lead_tissue_limit ) | |
| 1386 { | |
| 1387 char_O_gtissue_no = ci; | |
| 1388 calc_lead_tissue_limit = p; | |
| 1389 } | |
| 1390 } | |
| 167 | 1391 } |
| 1392 | |
| 1393 ////////////////////////////////////////////////////////////////////////////// | |
| 1394 // calc_nullzeit | |
| 1395 // | |
| 1396 // calculates the remaining bottom time | |
| 1397 // | |
| 1398 // unchanged in v.101 | |
| 1399 // | |
| 1400 static void calc_nullzeit(void) | |
| 1401 { | |
| 1402 overlay int loop; | |
| 1403 | |
| 116 | 1404 char_O_nullzeit = 0; |
| 167 | 1405 for(loop = 1; loop <= 17; loop++) |
| 116 | 1406 { |
| 1407 backup_sim_pres_tissue(); | |
| 192 | 1408 sim_tissue(2); |
| 1409 sim_limit(GF_high); | |
| 167 | 1410 |
| 192 | 1411 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1412 { |
| 1413 restore_sim_pres_tissue(); | |
| 1414 break; | |
| 1415 } | |
| 1416 // Validate once we know its good. | |
| 1417 char_O_nullzeit += 10; | |
| 167 | 1418 } |
| 1419 | |
| 116 | 1420 if (char_O_nullzeit < 60) |
| 1421 { | |
| 167 | 1422 for(loop=1; loop <= 10; loop++) |
| 116 | 1423 { |
| 192 | 1424 sim_tissue(1); |
| 1425 sim_limit(GF_high); | |
| 1426 | |
| 1427 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1428 break; |
| 1429 char_O_nullzeit++; | |
| 167 | 1430 } |
| 185 | 1431 } |
| 1432 } | |
| 116 | 1433 |
| 167 | 1434 ////////////////////////////////////////////////////////////////////////////// |
| 1435 // backup_sim_pres_tissue | |
| 1436 // | |
| 116 | 1437 void backup_sim_pres_tissue(void) |
| 1438 { | |
| 167 | 1439 overlay unsigned char x; |
| 1440 | |
| 1441 for(x = 0; x<32; x++) | |
| 126 | 1442 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1443 } |
| 116 | 1444 |
| 167 | 1445 ////////////////////////////////////////////////////////////////////////////// |
| 1446 // restore_sim_pres_tissue | |
| 1447 // | |
| 116 | 1448 void restore_sim_pres_tissue(void) |
| 1449 { | |
| 167 | 1450 overlay unsigned char x; |
| 1451 | |
| 1452 for(x = 0; x<32; x++) | |
| 126 | 1453 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1454 } |
| 116 | 1455 |
| 167 | 1456 ////////////////////////////////////////////////////////////////////////////// |
| 1457 // calc_ascenttime | |
| 1458 // | |
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1459 static void calc_ascenttime(void) |
| 116 | 1460 { |
| 126 | 1461 if (pres_respiration > pres_surface) |
| 1462 { | |
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1463 overlay unsigned char x; |
| 168 | 1464 |
| 192 | 1465 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
| 1466 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
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1467 if (ascent < 0.0) |
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1468 ascent = 0.0; |
| 192 | 1469 int_O_ascenttime = (unsigned int)(ascent + 0.99); |
| 168 | 1470 |
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1471 for(x=0; x<32 && internal_deco_depth[x]; x++) |
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1472 int_O_ascenttime += (unsigned int)internal_deco_time[x]; |
| 126 | 1473 } |
| 1474 else | |
| 168 | 1475 int_O_ascenttime = 0; |
| 167 | 1476 } |
| 116 | 1477 |
| 167 | 1478 ////////////////////////////////////////////////////////////////////////////// |
| 1479 // update_startvalues | |
| 1480 // | |
| 116 | 1481 // updated in v.102 |
| 167 | 1482 // |
| 116 | 1483 void update_startvalues(void) |
| 1484 { | |
| 167 | 1485 overlay unsigned char x; |
| 116 | 1486 |
| 1487 for (x = 0;x<16;x++) | |
| 1488 { | |
| 1489 sim_pres_tissue[x] = pres_tissue[x]; | |
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1490 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1491 sim_pres_tissue_limit[x] = pres_tissue_limit[x]; |
| 1492 } | |
| 167 | 1493 } |
| 116 | 1494 |
| 167 | 1495 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1496 // sim_tissue |
| 167 | 1497 // |
| 116 | 1498 // optimized in v.101 |
| 167 | 1499 // |
| 1500 // Function very simular to calc_tissue, but: | |
| 1501 // + Use a 1min or 10min period. | |
| 1502 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1503 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1504 { |
| 192 | 1505 for(ci=0; ci<16; ci++) |
| 126 | 1506 { |
| 184 | 1507 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1508 |
| 126 | 1509 // N2 |
| 165 | 1510 temp_tissue = (temp_atem - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1511 temp_tissue_safety(); |
| 167 | 1512 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1513 |
| 1514 // He | |
| 167 | 1515 temp_tissue = (temp2_atem - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1516 temp_tissue_safety(); |
| 167 | 1517 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1518 } |
| 167 | 1519 } |
| 116 | 1520 |
| 167 | 1521 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1522 // sim_limit() |
| 1523 // | |
| 1524 // New in v.111 | |
| 1525 // | |
| 1526 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1527 // different depth, because it depends on current gradient factor. | |
| 167 | 1528 // |
| 192 | 1529 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1530 { |
| 192 | 1531 sim_lead_tissue_limit = 0.0; |
| 1532 sim_lead_tissue_no = 255; | |
| 1533 | |
| 1534 for(ci=0; ci<16; ci++) | |
| 1535 { | |
| 1536 overlay float p = sim_pres_tissue[ci] + (sim_pres_tissue+16)[ci]; | |
| 1537 | |
| 1538 read_buhlmann_coefficients(-1); | |
| 1539 var_N2_a = (var_N2_a * sim_pres_tissue[ci] + var_He_a * (sim_pres_tissue+16)[ci]) / p; | |
| 1540 var_N2_b = (var_N2_b * sim_pres_tissue[ci] + var_He_b * (sim_pres_tissue+16)[ci]) / p; | |
| 1541 | |
| 1542 // Apply the Eric Baker's varying gradient factor correction. | |
| 1543 // Note: the correction factor depends both on GF and b, | |
| 1544 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1545 // so that can change who is the leading gas... | |
| 1546 // Note: Also depends of the GF_current... | |
| 1547 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1548 // hence what would happend at surface, | |
| 1549 // hence at GF_high. | |
| 1550 if( char_I_deco_model == 1 ) | |
| 1551 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1552 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1553 else | |
| 1554 p = (p - var_N2_a) * var_N2_b; | |
| 1555 if( p < 0 ) p = 0; | |
| 1556 | |
| 1557 sim_pres_tissue_limit[ci] = p; | |
| 1558 if( p > sim_lead_tissue_limit ) | |
| 1559 { | |
| 1560 sim_lead_tissue_no = ci; | |
| 1561 sim_lead_tissue_limit = p; | |
| 1562 } | |
| 1563 } // for ci | |
| 167 | 1564 } |
| 116 | 1565 |
| 167 | 1566 ////////////////////////////////////////////////////////////////////////////// |
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1567 // clear_deco_table |
| 167 | 1568 // |
| 1569 // unchanged in v.101 | |
| 1570 // | |
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1571 static void clear_deco_table(void) |
| 116 | 1572 { |
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1573 overlay unsigned char x; |
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1574 |
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1575 for(x=0; x<32; ++x) |
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1576 { |
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1577 internal_deco_time [x] = 0; |
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1578 internal_deco_depth[x] = 0; |
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1579 } |
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1580 } |
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1581 |
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1582 ////////////////////////////////////////////////////////////////////////////// |
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1583 // update_deco_table |
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1584 // |
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1585 // Add 1 min to current stop. |
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1586 // |
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1587 // Inputs: |
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1588 // temp_depth_limit = stop's depth, in meters. |
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1589 // In/Out: |
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1590 // internal_deco_depth[] : depth (in meters) of each stops. |
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1591 // internal_deco_time [] : time (in minutes) of each stops. |
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1592 // |
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1593 static void update_deco_table() |
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1594 { |
| 192 | 1595 overlay unsigned char x; |
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1596 |
| 192 | 1597 for(x=0; x<32; ++x) |
| 1598 { | |
| 1599 if( internal_deco_depth[x] == temp_depth_limit) | |
| 1600 { | |
| 1601 // Do not overflow (max 255') | |
| 1602 if( internal_deco_time[x] < 255 ) | |
| 1603 { | |
| 1604 internal_deco_time[x]++; | |
| 1605 return; | |
| 1606 } | |
| 1607 // But store extra in the next stop... | |
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1608 } |
| 192 | 1609 |
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1610 if( internal_deco_depth[x] == 0 ) |
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1611 { |
| 192 | 1612 internal_deco_depth[x] = temp_depth_limit; |
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1613 internal_deco_time[x] = 1; |
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1614 return; |
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1615 } |
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1616 } |
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1617 |
| 192 | 1618 // Can't store stops at more than 96m. |
| 1619 // Or stops at less that 3m too. | |
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1620 // Just do nothing with that... |
| 167 | 1621 } |
| 116 | 1622 |
| 167 | 1623 ////////////////////////////////////////////////////////////////////////////// |
| 1624 // calc_gradient_factor | |
| 1625 // | |
| 165 | 1626 // optimized in v.101 (var_N2_a) |
| 116 | 1627 // new code in v.102 |
| 167 | 1628 // |
| 1629 static void calc_gradient_factor(void) | |
| 116 | 1630 { |
| 1631 // tissue > respiration (entsaettigungsvorgang) | |
| 1632 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1633 // dh. 0% = respiration == tissue | |
| 1634 // dh. 100% = respiration == limit | |
| 1635 temp_tissue = pres_tissue[char_O_gtissue_no] + pres_tissue[char_O_gtissue_no+16]; | |
| 1636 temp1 = temp_tissue - pres_respiration; | |
| 1637 temp2 = temp_tissue - pres_tissue_limit[char_O_gtissue_no]; // changed in v.102 | |
| 1638 temp2 = temp1/temp2; | |
| 1639 temp2 = temp2 * 100; // displayed in percent | |
| 1640 if (temp2 < 0) | |
| 1641 temp2 = 0; | |
| 1642 if (temp2 > 255) | |
| 1643 temp2 = 255; | |
| 1644 if (temp1 < 0) | |
| 1645 char_O_gradient_factor = 0; | |
| 1646 else | |
| 1647 char_O_gradient_factor = (char)temp2; | |
| 1648 | |
| 1649 temp3 = temp2; | |
| 1650 | |
| 1651 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1652 { | |
| 192 | 1653 temp1 = (float)low_depth * 0.09995; |
| 116 | 1654 temp2 = pres_respiration - pres_surface; |
| 1655 if (temp2 <= 0) | |
| 1656 temp1 = GF_high; | |
| 186 | 1657 else if (temp2 >= temp1) |
| 116 | 1658 temp1 = GF_low; |
| 1659 else | |
| 1660 temp1 = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 186 | 1661 |
| 192 | 1662 if (low_depth == 0) |
| 116 | 1663 temp1 = GF_high; |
| 186 | 1664 |
| 116 | 1665 temp2 = temp3 / temp1; // temp3 is already in percent |
| 1666 if (temp2 < 0) | |
| 1667 temp2 = 0; | |
| 1668 if (temp2 > 255) | |
| 1669 temp2 = 255; | |
| 1670 char_O_relative_gradient_GF = (char)temp2; | |
| 1671 } // calc relative gradient factor | |
| 1672 else | |
| 1673 { | |
| 186 | 1674 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1675 } |
| 167 | 1676 } |
| 116 | 1677 |
| 167 | 1678 ////////////////////////////////////////////////////////////////////////////// |
| 1679 // deco_calc_desaturation_time | |
| 1680 // | |
| 116 | 1681 // FIXED N2_ratio |
| 1682 // unchanged in v.101 | |
| 167 | 1683 // |
| 116 | 1684 void deco_calc_desaturation_time(void) |
| 1685 { | |
| 184 | 1686 overlay unsigned int desat_time; // For a particular compartiment, in min. |
| 167 | 1687 |
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1688 RESET_C_STACK |
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1689 |
| 126 | 1690 N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann |
| 1691 pres_surface = (float)int_I_pres_surface / 1000.0; | |
| 1692 temp_atem = N2_ratio * (pres_surface - 0.0627); | |
| 1693 int_O_desaturation_time = 0; | |
| 1694 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 1695 | |
| 1696 for (ci=0;ci<16;ci++) | |
| 1697 { | |
| 165 | 1698 var_N2_halftime = buhlmann_ht[ci]; |
| 167 | 1699 var_He_halftime = (buhlmann_ht+16)[ci]; |
| 116 | 1700 |
| 126 | 1701 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1702 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1703 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1704 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1705 // N2 | |
| 1706 temp1 = 1.05 * temp_atem; | |
| 1707 temp1 = temp1 - pres_tissue[ci]; | |
| 1708 temp2 = temp_atem - pres_tissue[ci]; | |
| 1709 if (temp2 >= 0.0) | |
| 1710 { | |
| 1711 temp1 = 0; | |
| 1712 temp2 = 0; | |
| 1713 } | |
| 1714 else | |
| 1715 temp1 = temp1 / temp2; | |
| 1716 if (temp1 > 0.0) | |
| 1717 { | |
| 1718 temp1 = log(1.0 - temp1); | |
| 1719 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1720 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1721 // minus because log is negative | |
| 165 | 1722 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 | 1723 } |
| 1724 else | |
| 1725 { | |
| 1726 temp1 = 0; | |
| 1727 temp2 = 0; | |
| 1728 } | |
| 116 | 1729 |
| 126 | 1730 // He |
| 167 | 1731 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1732 if (temp3 >= 0.0) |
| 1733 { | |
| 1734 temp3 = 0; | |
| 1735 temp4 = 0; | |
| 1736 } | |
| 1737 else | |
| 167 | 1738 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 126 | 1739 if (temp3 > 0.0) |
| 1740 { | |
| 1741 temp3 = log(1.0 - temp3); | |
| 1742 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1743 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1744 // minus because log is negative | |
| 165 | 1745 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1746 } |
| 1747 else | |
| 1748 { | |
| 1749 temp3 = 0; | |
| 1750 temp4 = 0; | |
| 1751 } | |
| 116 | 1752 |
| 126 | 1753 // saturation_time (for flight) |
| 1754 if (temp4 > temp2) | |
| 184 | 1755 desat_time = (unsigned int)temp4; |
| 126 | 1756 else |
| 184 | 1757 desat_time = (unsigned int)temp2; |
| 167 | 1758 if(desat_time > int_O_desaturation_time) |
| 1759 int_O_desaturation_time = desat_time; | |
| 116 | 1760 |
| 126 | 1761 // N2 saturation in multiples of halftime for display purposes |
| 1762 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1763 temp2 = temp2 + 80.0; // set center | |
| 1764 if (temp2 < 0.0) | |
| 1765 temp2 = 0.0; | |
| 1766 if (temp2 > 255.0) | |
| 1767 temp2 = 255.0; | |
| 1768 char_O_tissue_saturation[ci] = (char)temp2; | |
| 1769 // He saturation in multiples of halftime for display purposes | |
| 1770 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1771 temp4 = temp4 + 80.0; // set center | |
| 1772 if (temp4 < 0.0) | |
| 1773 temp4 = 0.0; | |
| 1774 if (temp4 > 255.0) | |
| 1775 temp4 = 255.0; | |
| 167 | 1776 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1777 } // for |
| 167 | 1778 } |
| 116 | 1779 |
| 167 | 1780 ////////////////////////////////////////////////////////////////////////////// |
| 1781 // calc_wo_deco_step_1_min | |
| 1782 // | |
| 116 | 1783 // FIXED N2 Ratio |
| 1784 // optimized in v.101 (...saturation_multiplier) | |
| 1785 // desaturation slowed down to 70,42% | |
| 167 | 1786 // |
| 1787 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1788 { |
| 1789 if(flag_in_divemode) | |
| 1790 { | |
| 1791 flag_in_divemode = 0; | |
| 1792 set_dbg_end_of_dive(); | |
| 1793 } | |
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1794 |
| 126 | 1795 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 1796 pres_respiration = (float)int_I_pres_respiration / 1000.0; // assembler code uses different digit system | |
| 192 | 1797 pres_surface = (float)int_I_pres_surface / 1000.0; // the b"uhlmann formula using pres_surface does not use the N2_ratio |
| 126 | 1798 temp_atem = N2_ratio * (pres_respiration - 0.0627); // 0.0627 is the extra pressure in the body |
| 1799 temp2_atem = 0.0; | |
| 1800 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 1801 float_saturation_multiplier = char_I_saturation_multiplier / 100.0; | |
| 1802 | |
| 192 | 1803 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 1804 |
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1805 clear_deco_table(); |
| 126 | 1806 char_O_deco_status = 0; |
| 1807 char_O_nullzeit = 0; | |
| 168 | 1808 int_O_ascenttime = 0; |
| 126 | 1809 calc_gradient_factor(); |
| 167 | 1810 } |
| 126 | 1811 |
| 167 | 1812 ////////////////////////////////////////////////////////////////////////////// |
| 1813 ////////////////////////////////////////////////////////////////////////////// | |
| 1814 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1815 ////////////////////////////////////////////////////////////////////////////// | |
| 1816 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1817 |
| 184 | 1818 #ifndef CROSS_COMPILE |
| 116 | 1819 void deco_hash(void) |
| 1820 { | |
| 167 | 1821 overlay unsigned char md_i, md_j; // Loop index. |
| 1822 overlay unsigned char md_t; | |
| 1823 overlay unsigned char md_buffer[16]; | |
| 1824 overlay unsigned char md_temp; | |
| 1825 overlay unsigned int md_pointer; | |
| 1826 | |
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1827 RESET_C_STACK |
| 126 | 1828 |
| 1829 // init | |
| 164 | 1830 for(md_i=0;md_i<16;md_i++) |
| 126 | 1831 { |
| 1832 md_state[md_i] = 0; | |
| 164 | 1833 char_O_hash[md_i] = 0; |
| 126 | 1834 } // for md_i 16 |
| 116 | 1835 |
| 126 | 1836 _asm |
| 167 | 1837 movlw 0x01 // md_pi address. |
| 1838 movwf TBLPTRU,0 | |
| 1839 movlw 0x7E | |
| 1840 movwf TBLPTRH,0 | |
| 1841 movlw 0x00 | |
| 1842 movwf TBLPTRL,0 | |
| 126 | 1843 _endasm; |
| 165 | 1844 md_i = 0; |
| 1845 do { | |
| 126 | 1846 _asm |
| 1847 TBLRDPOSTINC | |
| 1848 movff TABLAT,md_temp | |
| 1849 _endasm | |
| 165 | 1850 md_pi_subst[md_i++] = md_temp; |
| 1851 } while( md_i != 0 ); | |
| 1852 | |
| 126 | 1853 _asm |
| 167 | 1854 movlw 0x00 |
| 1855 movwf TBLPTRU,0 | |
| 1856 movlw 0x00 | |
| 1857 movwf TBLPTRH,0 | |
| 1858 movlw 0x00 | |
| 1859 movwf TBLPTRL,0 | |
| 126 | 1860 _endasm |
| 167 | 1861 |
| 126 | 1862 // cycle buffers |
| 1863 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 1864 { | |
| 1865 md_t = 0; | |
| 1866 for (md_i=0;md_i<16;md_i++) | |
| 1867 { | |
| 1868 if(md_pointer == 9) | |
| 164 | 1869 md_temp = char_O_hash[md_i]; |
| 126 | 1870 else |
| 1871 { | |
| 1872 _asm | |
| 167 | 1873 TBLRDPOSTINC |
| 1874 movff TABLAT,md_temp | |
| 126 | 1875 _endasm |
| 1876 } // else | |
| 167 | 1877 |
| 1878 md_buffer[md_i] = md_temp; | |
| 186 | 1879 md_state[md_i+16] = md_temp; |
| 1880 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 1881 } // for md_i 16 |
| 1882 | |
| 1883 for (md_i=0;md_i<18;md_i++) | |
| 1884 { | |
| 1885 for (md_j=0;md_j<48;md_j++) | |
| 1886 { | |
| 167 | 1887 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 1888 md_t = md_state[md_j]; |
| 1889 } // for md_j 48 | |
| 1890 md_t = (unsigned char)(md_t+1); | |
| 1891 } // for md_i 18 | |
| 164 | 1892 md_t = char_O_hash[15]; |
| 126 | 1893 |
| 1894 for (md_i=0;md_i<16;md_i++) | |
| 1895 { | |
| 167 | 1896 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 1897 md_t = char_O_hash[md_i]; |
| 126 | 1898 } // for md_i 16 |
| 1899 } // for md_pointer | |
| 116 | 1900 } // void deco_hash(void) |
| 184 | 1901 #endif |
| 116 | 1902 |
| 167 | 1903 ////////////////////////////////////////////////////////////////////////////// |
| 1904 // deco_clear_CNS_fraction | |
| 1905 // | |
| 116 | 1906 // new in v.101 |
| 167 | 1907 // |
| 116 | 1908 void deco_clear_CNS_fraction(void) |
| 1909 { | |
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1910 RESET_C_STACK |
| 126 | 1911 CNS_fraction = 0.0; |
| 1912 char_O_CNS_fraction = 0; | |
| 167 | 1913 } |
| 116 | 1914 |
| 167 | 1915 ////////////////////////////////////////////////////////////////////////////// |
| 1916 // deco_calc_CNS_fraction | |
| 1917 // | |
| 116 | 1918 // new in v.101 |
| 1919 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 1920 // |
| 116 | 1921 // Input: char_I_actual_ppO2 |
| 1922 // Output: char_O_CNS_fraction | |
| 1923 // Uses and Updates: CNS_fraction | |
| 1924 // Uses: acutal_ppO2 | |
| 167 | 1925 // |
| 116 | 1926 void deco_calc_CNS_fraction(void) |
| 1927 { | |
| 167 | 1928 overlay float actual_ppO2; |
| 126 | 1929 RESET_C_STACK |
| 167 | 1930 |
| 126 | 1931 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 1932 |
| 126 | 1933 if (char_I_actual_ppO2 < 50) |
| 1934 CNS_fraction = CNS_fraction;// no changes | |
| 1935 else if (char_I_actual_ppO2 < 60) | |
| 1936 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 1937 else if (char_I_actual_ppO2 < 70) | |
| 1938 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 1939 else if (char_I_actual_ppO2 < 80) | |
| 1940 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 1941 else if (char_I_actual_ppO2 < 90) | |
| 1942 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 1943 else if (char_I_actual_ppO2 < 110) | |
| 1944 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 1945 else if (char_I_actual_ppO2 < 150) | |
| 1946 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 1947 else if (char_I_actual_ppO2 < 160) | |
| 1948 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 1949 else if (char_I_actual_ppO2 < 165) | |
| 1950 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 | |
| 1951 else if (char_I_actual_ppO2 < 170) | |
| 1952 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 1953 else if (char_I_actual_ppO2 < 175) | |
| 1954 CNS_fraction = 0.00136 + CNS_fraction; | |
| 1955 else if (char_I_actual_ppO2 < 180) | |
| 1956 CNS_fraction = 0.00180 + CNS_fraction; | |
| 1957 else if (char_I_actual_ppO2 < 185) | |
| 1958 CNS_fraction = 0.00237 + CNS_fraction; | |
| 1959 else if (char_I_actual_ppO2 < 190) | |
| 1960 CNS_fraction = 0.00310 + CNS_fraction; | |
| 1961 else if (char_I_actual_ppO2 < 195) | |
| 1962 CNS_fraction = 0.00401 + CNS_fraction; | |
| 1963 else if (char_I_actual_ppO2 < 200) | |
| 1964 CNS_fraction = 0.00517 + CNS_fraction; | |
| 1965 else if (char_I_actual_ppO2 < 230) | |
| 1966 CNS_fraction = 0.0209 + CNS_fraction; | |
| 1967 else | |
| 1968 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 1969 |
| 126 | 1970 if (CNS_fraction > 2.5) |
| 1971 CNS_fraction = 2.5; | |
| 1972 if (CNS_fraction < 0.0) | |
| 1973 CNS_fraction = 0.0; | |
| 1974 | |
| 1975 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 1976 } |
| 116 | 1977 |
| 167 | 1978 ////////////////////////////////////////////////////////////////////////////// |
| 1979 // deco_calc_CNS_decrease_15min | |
| 1980 // | |
| 116 | 1981 // new in v.101 |
| 167 | 1982 // |
| 116 | 1983 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 167 | 1984 // |
| 116 | 1985 // Output: char_O_CNS_fraction |
| 1986 // Uses and Updates: CNS_fraction | |
| 167 | 1987 // |
| 116 | 1988 void deco_calc_CNS_decrease_15min(void) |
| 1989 { | |
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1990 RESET_C_STACK |
| 126 | 1991 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 1992 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 1993 } | |
| 116 | 1994 |
| 167 | 1995 ////////////////////////////////////////////////////////////////////////////// |
| 1996 // deco_calc_percentage | |
| 1997 // | |
| 116 | 1998 // new in v.101 |
| 167 | 1999 // |
| 116 | 2000 // calculates int_I_temp * char_I_temp / 100 |
| 2001 // output is int_I_temp | |
| 2002 | |
| 2003 void deco_calc_percentage(void) | |
| 2004 { | |
|
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2005 RESET_C_STACK |
| 126 | 2006 temp1 = (float)int_I_temp; |
| 2007 temp2 = (float)char_I_temp / 100.0; | |
| 2008 temp3 = temp1 * temp2; | |
| 2009 int_I_temp = (int)temp3; | |
| 116 | 2010 } |
| 2011 | |
| 167 | 2012 ////////////////////////////////////////////////////////////////////////////// |
| 2013 | |
| 116 | 2014 void deco_push_tissues_to_vault(void) |
| 2015 { | |
| 167 | 2016 overlay unsigned char x; |
|
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2017 RESET_C_STACK |
| 167 | 2018 |
| 116 | 2019 cns_vault = CNS_fraction; |
| 167 | 2020 for (x=0;x<32;x++) |
| 2021 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2022 } |
| 167 | 2023 |
| 116 | 2024 void deco_pull_tissues_from_vault(void) |
| 2025 { | |
| 167 | 2026 overlay unsigned char x; |
|
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2027 RESET_C_STACK |
| 167 | 2028 |
| 116 | 2029 CNS_fraction = cns_vault; |
| 167 | 2030 for (x=0;x<32;x++) |
| 2031 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2032 } |
| 2033 | |
| 167 | 2034 ////////////////////////////////////////////////////////////////////////////// |
| 2035 // | |
| 184 | 2036 #ifndef CROSS_COMPILE |
| 2037 void main() {} | |
| 2038 #endif |