Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 194:94c1eaa1e25b
small typos fixed
| author | heinrichsweikamp |
|---|---|
| date | Sat, 12 Feb 2011 16:47:01 +0100 |
| parents | 652e17b6267a |
| children | f15e804ff67f |
| 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. |
| 116 | 72 // |
| 167 | 73 // TODO: |
| 74 // + Allow (CF) delay for gas switch while predicting ascent. | |
| 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 temp2; | |
| 164 static float temp3; | |
| 165 static float temp4; | |
| 166 static float temp_deco; | |
| 167 static float temp_atem; | |
| 168 static float temp2_atem; | |
| 169 static float temp_tissue; | |
| 170 static float N2_ratio; | |
| 171 static float He_ratio; | |
| 165 | 172 static float var_N2_a; |
| 173 static float var_N2_b; | |
| 174 static float var_He_a; | |
| 175 static float var_He_b; | |
| 176 static float var_N2_e; | |
| 177 static float var_He_e; | |
| 178 static float var_N2_halftime; | |
| 179 static float var_He_halftime; | |
| 116 | 180 |
| 164 | 181 static float pres_diluent; // new in v.101 |
| 182 static float deco_diluent; // new in v.101 | |
| 183 static float const_ppO2; // new in v.101 | |
| 184 static float deco_ppO2_change; // new in v.101 | |
| 185 static float deco_ppO2; // new in v.101 | |
| 116 | 186 |
| 171 | 187 static unsigned char calc_gas_switch; // Detected a gas switch. |
| 167 | 188 static float calc_N2_ratio; // new in v.101 |
| 189 static float calc_He_ratio; // new in v.101 | |
| 190 static float CNS_fraction; // new in v.101 | |
| 191 static float float_saturation_multiplier; // new in v.101 | |
| 192 static float float_desaturation_multiplier; // new in v.101 | |
| 193 static float float_deco_distance; // new in v.101 | |
| 194 static char flag_in_divemode; // new in v.108 | |
| 195 | |
| 196 static float deco_gas_change1; // new in v.101 | |
| 197 static float deco_gas_change2; // new in v.109 | |
| 198 static float deco_gas_change3; // new in v.109 | |
| 199 static float deco_gas_change4; // new in v.109 | |
| 200 static float deco_gas_change5; // new in v.109 | |
| 201 | |
| 202 static float deco_N2_ratio1; // new in v.101 | |
| 203 static float deco_He_ratio1; // new in v.101 | |
| 204 static float deco_N2_ratio2; // new in v.109 | |
| 205 static float deco_N2_ratio3; // new in v.109 | |
| 206 static float deco_N2_ratio4; // new in v.109 | |
| 207 static float deco_N2_ratio5; // new in v.109 | |
| 208 static float deco_He_ratio2; // new in v.109 | |
| 209 static float deco_He_ratio3; // new in v.109 | |
| 210 static float deco_He_ratio4; // new in v.109 | |
| 211 static float deco_He_ratio5; // new in v.109 | |
| 212 | |
| 213 | |
| 163 | 214 //---- Bank 6 parameters ----------------------------------------------------- |
| 215 #pragma udata bank6=0x600 | |
| 116 | 216 |
| 164 | 217 static float pres_tissue[32]; |
| 116 | 218 static float pres_tissue_limit[16]; |
| 219 static float sim_pres_tissue_limit[16]; | |
| 220 | |
| 163 | 221 //---- Bank 7 parameters ----------------------------------------------------- |
| 222 #pragma udata bank7=0x700 | |
| 223 | |
| 224 static float sim_pres_tissue[32]; // 32 floats = 128 bytes. | |
| 116 | 225 static float sim_pres_tissue_backup[32]; |
| 226 | |
| 163 | 227 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 228 #pragma udata bank8=0x800 |
| 163 | 229 |
| 116 | 230 static char md_pi_subst[256]; |
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231 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 232 |
| 163 | 233 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 234 #pragma udata bank9=0x900 |
| 116 | 235 |
| 163 | 236 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 237 |
| 164 | 238 // internal, dbg: |
| 167 | 239 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 240 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 241 static float DBG_pres_surface; // new in v.108 | |
| 242 static float DBG_GF_low; // new in v.108 | |
| 243 static float DBG_GF_high; // new in v.108 | |
| 244 static float DBG_const_ppO2; // new in v.108 | |
| 245 static float DBG_deco_ppO2_change; // new in v.108 | |
| 246 static float DBG_deco_ppO2; // new in v.108 | |
| 247 static float DBG_deco_N2_ratio; // new in v.108 | |
| 248 static float DBG_deco_He_ratio; // new in v.108 | |
| 249 static float DBG_deco_gas_change; // new in v.108 | |
| 250 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 251 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 252 static float DBG_float_deco_distance; // new in v.108 | |
| 253 static float DBG_deco_N2_ratio; // new in v.108 | |
| 254 static float DBG_deco_He_ratio; // new in v.108 | |
| 255 static float DBG_N2_ratio; // new in v.108 | |
| 256 static float DBG_He_ratio; // new in v.108 | |
| 257 | |
| 167 | 258 ////////////////////////////////////////////////////////////////////////////// |
| 259 ////////////////////////////////////////////////////////////////////////////// | |
| 260 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 261 ////////////////////////////////////////////////////////////////////////////// | |
| 262 ////////////////////////////////////////////////////////////////////////////// | |
| 263 // | |
| 264 // End of PROM code is 17F00, So push tables on PROM top... | |
| 265 // | |
| 266 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 267 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 268 |
| 167 | 269 // Magic table to compute the MD2 HASH |
| 270 // | |
| 271 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 116 | 272 rom const rom unsigned int md_pi[] = |
| 273 { | |
| 274 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 275 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 276 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 277 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 278 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 279 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 280 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 281 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 282 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 283 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 284 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 285 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 286 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 287 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 288 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 289 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 290 }; | |
| 291 | |
| 167 | 292 ////////////////////////////////////////////////////////////////////////////// |
| 293 ////////////////////////////////////////////////////////////////////////////// | |
| 294 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 295 ////////////////////////////////////////////////////////////////////////////// | |
| 296 ////////////////////////////////////////////////////////////////////////////// | |
| 297 // | |
| 116 | 298 // all new in v.102 |
| 299 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 300 | |
| 301 #pragma code p2_deco = 0x0C000 | |
| 302 | |
| 167 | 303 ////////////////////////////////////////////////////////////////////////////// |
| 304 // DBS - debug on start of dive | |
| 305 // | |
| 306 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 307 { |
| 167 | 308 overlay char i; // Local loop index. |
| 309 | |
| 310 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 311 int_O_DBS_bitfield = 0; |
| 312 int_O_DBS2_bitfield = 0; | |
| 313 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 314 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 315 else | |
| 316 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 317 int_O_DBG_post_bitfield = 0; | |
| 167 | 318 |
| 319 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 320 char_O_NDL_at_20mtr = 255; |
| 321 | |
| 167 | 322 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 323 DBG_N2_ratio = N2_ratio; |
| 324 DBG_He_ratio = He_ratio; | |
| 325 DBG_char_I_deco_model = char_I_deco_model; | |
| 326 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 327 DBG_pres_surface = pres_surface; | |
| 328 DBG_GF_low = GF_low; | |
| 329 DBG_GF_high = GF_high; | |
| 330 DBG_const_ppO2 = const_ppO2; | |
| 331 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 332 DBG_deco_ppO2 = deco_ppO2; | |
| 167 | 333 DBG_deco_N2_ratio = deco_N2_ratio1; |
| 334 DBG_deco_He_ratio = deco_He_ratio1; | |
| 335 DBG_deco_gas_change = deco_gas_change1; | |
| 116 | 336 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 337 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 338 DBG_float_deco_distance = float_deco_distance; | |
| 339 | |
| 167 | 340 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 341 if(char_I_deco_model) |
| 342 int_O_DBS_bitfield |= DBS_mode; | |
| 343 if(const_ppO2) | |
| 344 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 345 for(i = 16; i < 32; i++) |
| 346 if(pres_tissue[i]) | |
| 116 | 347 int_O_DBS_bitfield |= DBS_HE_sat; |
| 348 if(deco_ppO2_change) | |
| 349 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 350 if(float_saturation_multiplier < 0.99) | |
| 351 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 352 if(float_saturation_multiplier > 1.3) | |
| 353 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 354 if(GF_low < 0.19) | |
| 355 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 356 if(GF_low > 1.01) | |
| 357 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 358 if(GF_high < 0.6) | |
| 359 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 360 if(GF_high > 1.01) | |
| 361 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 362 if((N2_ratio + He_ratio) > 0.95) | |
| 363 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 364 if((N2_ratio + He_ratio) < 0.05) | |
| 365 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 366 if(float_deco_distance > 0.25) | |
| 367 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 368 if(char_I_depth_last_deco > 8) | |
| 369 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 167 | 370 if(DBG_deco_gas_change && ((deco_N2_ratio1 + deco_He_ratio1) > 0.95)) |
| 116 | 371 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 167 | 372 if(DBG_deco_gas_change && ((deco_N2_ratio1 + deco_He_ratio1) < 0.05)) |
| 116 | 373 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 374 if(pres_respiration > 3.0) | |
| 375 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 376 if(pres_surface - pres_respiration > 0.2) | |
| 377 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 378 if(pres_surface < 0.75) | |
| 379 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 380 if(pres_surface > 1.11) | |
| 381 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 382 if(float_desaturation_multiplier < 0.70) | |
| 383 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 384 if(float_desaturation_multiplier > 1.01) | |
| 385 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 386 if(GF_low > GF_high) | |
| 387 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 388 } | |
| 389 | |
| 167 | 390 ////////////////////////////////////////////////////////////////////////////// |
| 391 // DBG - set DBG to end_of_dive | |
| 392 // | |
| 393 static void set_dbg_end_of_dive(void) | |
| 116 | 394 { |
| 395 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 396 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 397 } | |
| 398 | |
| 167 | 399 ////////////////////////////////////////////////////////////////////////////// |
| 400 // DBG - NDL at first 20 m. hit | |
| 401 // | |
| 402 static void check_ndl(void) | |
| 116 | 403 { |
| 167 | 404 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 405 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 406 ) | |
| 116 | 407 { |
| 167 | 408 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 409 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 410 char_O_NDL_at_20mtr = 254; |
| 116 | 411 } |
| 412 } | |
| 413 | |
| 167 | 414 ////////////////////////////////////////////////////////////////////////////// |
| 415 // DBG - multi main during dive | |
| 416 // | |
| 184 | 417 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 418 { |
| 167 | 419 overlay unsigned int temp_DBS = 0; |
| 420 overlay char i; // Local loop index. | |
| 421 | |
| 116 | 422 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 423 temp_DBS |= DBG_c_gas; | |
| 424 if(DBG_const_ppO2 != const_ppO2) | |
| 425 temp_DBS |= DBG_c_ppO2; | |
| 167 | 426 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 427 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 428 ) | |
| 116 | 429 temp_DBS |= DBG_CdeSAT; |
| 430 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 431 temp_DBS |= DBG_C_MODE; | |
| 432 if(DBG_pres_surface != pres_surface) | |
| 433 temp_DBS |= DBG_C_SURF; | |
| 167 | 434 |
| 435 if( !DBS_HE_sat && !He_ratio) | |
| 436 for(i = 16; i < 32; i++) | |
| 437 if(pres_tissue[i]) | |
| 116 | 438 temp_DBS |= DBG_HEwoHE; |
| 167 | 439 |
| 116 | 440 if(DBG_deco_ppO2 != deco_ppO2) |
| 441 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 442 |
| 443 if( DBG_deco_gas_change != deco_gas_change1 | |
| 444 || DBG_deco_N2_ratio != deco_N2_ratio1 | |
| 445 || DBG_deco_He_ratio != deco_He_ratio1 ) | |
| 116 | 446 temp_DBS |= DBG_C_DGAS; |
| 167 | 447 |
| 116 | 448 if(DBG_float_deco_distance != float_deco_distance) |
| 449 temp_DBS |= DBG_C_DIST; | |
| 450 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 451 temp_DBS |= DBG_C_LAST; | |
| 167 | 452 if( DBG_GF_low != GF_low |
| 453 || DBG_GF_high != GF_high ) | |
| 116 | 454 temp_DBS |= DBG_C_GF; |
| 455 if(pres_respiration > 13.0) | |
| 456 temp_DBS |= DBG_PHIGH; | |
| 457 if(pres_surface - pres_respiration > 0.2) | |
| 458 temp_DBS |= DBG_PLOW; | |
| 459 if(is_post_check) | |
| 460 int_O_DBG_post_bitfield |= temp_DBS; | |
| 461 else | |
| 462 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 463 } | |
| 464 | |
| 167 | 465 ////////////////////////////////////////////////////////////////////////////// |
| 466 // DBG - prior to calc. of dive | |
| 467 // | |
| 468 static void check_pre_dbg(void) | |
| 116 | 469 { |
| 470 check_dbg(0); | |
| 471 } | |
| 472 | |
| 167 | 473 ////////////////////////////////////////////////////////////////////////////// |
| 474 // DBG - after decocalc of dive | |
| 475 // | |
| 476 static void check_post_dbg(void) | |
| 116 | 477 { |
| 478 check_dbg(1); | |
| 479 } | |
| 480 | |
| 165 | 481 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 482 ////////////////////////////////////////////////////////////////////////////// |
| 483 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 484 ////////////////////////////////////////////////////////////////////////////// | |
| 485 ////////////////////////////////////////////////////////////////////////////// | |
| 486 | |
| 184 | 487 static int read_custom_function(PARAMETER unsigned char cf) |
| 167 | 488 { |
| 184 | 489 #ifdef CROSS_COMPILE |
| 490 extern unsigned short custom_functions[]; | |
| 491 return custom_functions[cf]; | |
| 492 #else | |
| 167 | 493 extern unsigned char hi, lo; |
| 494 extern void getcustom15(); | |
| 495 _asm | |
| 496 movff cf,WREG | |
| 497 call getcustom15,0 | |
| 498 movff lo,PRODL | |
| 499 movff hi,PRODH | |
| 500 _endasm | |
| 184 | 501 #endif |
| 167 | 502 } |
| 503 | |
| 504 ////////////////////////////////////////////////////////////////////////////// | |
| 165 | 505 // read buhlmann tables for compatriment ci |
| 167 | 506 // If period == 0 : 2sec interval |
| 507 // 1 : 1 min interval | |
| 508 // 2 : 10 min interval. | |
| 184 | 509 static void read_buhlmann_coefficients(PARAMETER char period) |
| 165 | 510 { |
| 184 | 511 #ifndef CROSS_COMPILE |
| 167 | 512 // Note: we don't use far rom pointer, because the |
| 513 // 24 bits is to complex, hence we have to set | |
| 514 // the UPPER page ourself... | |
| 515 // --> Set zero if tables are moved to lower pages ! | |
| 516 _asm | |
| 517 movlw 1 | |
| 518 movwf TBLPTRU,0 | |
| 519 _endasm | |
| 184 | 520 #endif |
| 167 | 521 |
| 165 | 522 var_N2_a = buhlmann_a[ci]; |
| 523 var_N2_b = buhlmann_b[ci]; | |
| 167 | 524 var_He_a = (buhlmann_a+16)[ci]; |
| 525 var_He_b = (buhlmann_b+16)[ci]; | |
| 526 | |
| 165 | 527 // Check reading consistency: |
| 528 if( (var_N2_a < 0.231) | |
| 529 || (var_N2_a > 1.27) | |
| 530 || (var_N2_b < 0.504) | |
| 531 || (var_N2_b > 0.966) | |
| 532 || (var_He_a < 0.510) | |
| 533 || (var_He_a > 1.75) | |
| 534 || (var_He_b < 0.423) | |
| 535 || (var_He_b > 0.927) | |
| 536 ) | |
| 537 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 167 | 538 |
| 165 | 539 // Integration intervals. |
| 167 | 540 switch(period) |
| 165 | 541 { |
| 167 | 542 case -1://---- no interval ----------------------------------------------- |
| 543 var_N2_e = var_He_e = 0.0; | |
| 544 break; | |
| 545 | |
| 165 | 546 case 0: //---- 2 sec ----------------------------------------------------- |
| 547 var_N2_e = e2secs[ci]; | |
| 167 | 548 var_He_e = (e2secs+16)[ci]; |
| 165 | 549 |
| 550 // Check reading consistency: | |
| 551 if( (var_N2_e < 0.0000363) | |
| 552 || (var_N2_e > 0.00577) | |
| 553 || (var_He_e < 0.0000961) | |
| 554 || (var_He_e > 0.150) | |
| 555 ) | |
| 556 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 557 | |
| 558 break; | |
| 559 | |
| 560 case 1: //---- 1 min ----------------------------------------------------- | |
| 561 var_N2_e = e1min[ci]; | |
| 167 | 562 var_He_e = (e1min+16)[ci]; |
| 165 | 563 |
| 564 // Check reading consistency: | |
| 565 if( (var_N2_e < 1.09E-3) | |
| 566 || (var_N2_e > 0.1592) | |
| 567 || (var_He_e < 0.00288) | |
| 568 || (var_He_e > 0.3682) | |
| 569 ) | |
| 570 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 571 | |
| 572 break; | |
| 573 | |
| 574 case 2: //---- 10 min ---------------------------------------------------- | |
| 575 var_N2_e = e10min[ci]; | |
| 167 | 576 var_He_e = (e10min+16)[ci]; |
| 165 | 577 |
| 578 // Check reading consistency: | |
| 579 if( (var_N2_e < 0.01085) | |
| 580 || (var_N2_e > 0.82323) | |
| 581 || (var_He_e < 0.02846) | |
| 582 || (var_He_e > 0.98986) | |
| 583 ) | |
| 584 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 585 | |
| 586 break; | |
| 587 } | |
| 588 } | |
| 589 | |
| 590 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 591 // calc_next_decodepth_GF |
| 165 | 592 // |
| 116 | 593 // new in v.102 |
| 165 | 594 // |
| 116 | 595 // INPUT, changing during dive: |
| 192 | 596 // low_depth |
| 167 | 597 // |
| 116 | 598 // INPUT, fixed during dive: |
| 167 | 599 // pres_surface |
| 600 // GF_delta | |
| 601 // GF_high | |
| 602 // GF_low | |
| 171 | 603 // char_I_depth_last_deco |
| 167 | 604 // float_deco_distance |
| 605 // | |
| 116 | 606 // OUTPUT |
| 171 | 607 // locked_GF_step |
| 167 | 608 // temp_deco |
| 609 // temp_depth_limt | |
| 192 | 610 // low_depth |
| 167 | 611 // |
| 171 | 612 static void calc_nextdecodepth(void) |
| 167 | 613 { |
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614 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 615 if (char_I_deco_model == 1) |
| 616 { | |
| 192 | 617 // Recompute leading gas limit, at current depth: |
| 618 overlay float depth = (temp_deco - pres_surface) / 0.09995; | |
| 619 assert( depth >= 0.0 ); | |
| 167 | 620 |
| 192 | 621 if( depth > low_depth ) |
| 622 sim_limit( GF_low ); | |
| 623 else | |
| 624 sim_limit( GF_high - depth * locked_GF_step ); | |
| 625 | |
| 626 // Stops are needed ? | |
| 627 if( sim_lead_tissue_limit > pres_surface ) | |
| 628 { | |
| 629 // Deepest stop, in meter. | |
| 630 overlay unsigned char first_stop = 3 * (int)(0.99 + (sim_lead_tissue_limit - pres_surface) / 0.29985); | |
| 631 assert( first_stop < 128 ); | |
| 171 | 632 |
| 192 | 633 // Apply correction for the first stop. |
| 634 if( first_stop == 3 ) // new in v104 | |
| 635 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 636 |
| 192 | 637 // Is it a new deepest first stop ? If yes this is the reference for |
| 638 // the varying gradient factor. So reset that: | |
| 639 if( first_stop > low_depth ) | |
| 640 { | |
| 641 // Store the deepest stop depth, as reference for GF_low. | |
| 642 low_depth = first_stop; | |
| 643 locked_GF_step = GF_delta / low_depth; | |
| 644 } | |
| 171 | 645 |
| 192 | 646 // Check all stops until one is higher than tolerated presure |
| 647 while(first_stop > 0) | |
| 648 { | |
| 649 overlay unsigned char next_stop; // Next index (0..30) | |
| 650 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 651 |
| 192 | 652 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 653 next_stop = 0; | |
| 654 else | |
| 655 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 656 if( first_stop == 3 ) | |
| 657 first_stop = char_I_depth_last_deco; | |
| 167 | 658 |
| 192 | 659 pres_stop = next_stop * 0.09995 // Meters to bar |
| 660 + pres_surface; | |
| 661 | |
| 662 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 663 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 664 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 665 |
| 192 | 666 // upper limit (lowest pressure tolerated): |
| 667 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 668 break; | |
| 669 | |
| 670 // Else, validate that stop and loop... | |
| 671 first_stop = next_stop; | |
| 672 } | |
| 171 | 673 |
| 192 | 674 // first_stop is the last validated depth found: |
| 675 temp_depth_limit = first_stop; // Stop depth, in meter. | |
| 676 temp_deco = first_stop * 0.09995 // Convert to bars, too. | |
| 677 + pres_surface; | |
| 678 if (first_stop > 0) | |
| 679 temp_deco += float_deco_distance; // Add security distance (bars too) | |
| 680 } | |
| 171 | 681 else |
| 192 | 682 { |
| 683 temp_deco = pres_surface; // surface ambient presure | |
| 684 temp_depth_limit = 0; // stop depth, in meter. | |
| 685 } | |
| 116 | 686 } |
| 167 | 687 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 688 { |
| 192 | 689 overlay float pres_gradient; |
| 690 | |
| 691 // Original model | |
| 116 | 692 // optimized in v.101 |
| 171 | 693 // char_I_depth_last_deco included in v.101 |
| 116 | 694 |
| 192 | 695 // Compute sim_lead_tissue_limit too, but just once. |
| 696 sim_limit(1.0); | |
| 697 | |
| 698 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 699 if (pres_gradient >= 0) |
| 116 | 700 { |
| 192 | 701 pres_gradient /= 0.29985; // Bar --> stop number; |
| 702 temp_depth_limit = 3 * (int) (pres_gradient + 0.99); // --> meter : depth for deco | |
| 171 | 703 if (temp_depth_limit == 0) // At surface ? |
| 116 | 704 temp_deco = pres_surface; |
| 705 else | |
| 706 { | |
| 171 | 707 if (temp_depth_limit < char_I_depth_last_deco) // Implement last stop at 4m/5m/6m... |
| 708 temp_depth_limit = char_I_depth_last_deco; | |
| 709 temp_deco = (temp_depth_limit * 0.09995) // depth for deco [bar] = depth | |
| 710 + float_deco_distance // + security margin | |
| 711 + pres_surface; // + surface ambient presure | |
| 712 } | |
| 713 } | |
| 116 | 714 else |
| 715 { | |
| 171 | 716 temp_deco = pres_surface; // surface ambient presure |
| 192 | 717 temp_depth_limit = 0; // stop depth, in meter. |
| 171 | 718 } |
| 719 } | |
| 167 | 720 } |
| 116 | 721 |
| 167 | 722 ////////////////////////////////////////////////////////////////////////////// |
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723 // copy_deco_table |
| 167 | 724 // |
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725 // Buffer the stops, once computed, so we can continue to display them |
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726 // while computing the next set. |
| 167 | 727 // |
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728 static void copy_deco_table(void) |
| 116 | 729 { |
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730 // Copy depth of the first (deepest) stop, because when reversing |
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731 // order, it will be hard to find... |
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732 char_O_first_deco_depth = internal_deco_depth[0]; |
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733 char_O_first_deco_time = internal_deco_time [0]; |
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734 |
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735 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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736 { |
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737 overlay unsigned char x, y; |
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738 |
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739 //---- First: search the first non-null depth |
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740 for(x=31; x != 0; --x) |
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741 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 742 |
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743 //---- Second: copy to output table (in reverse order) |
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744 for(y=0; y<32; y++, --x) |
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745 { |
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746 char_O_deco_depth[y] = internal_deco_depth[x]; |
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747 char_O_deco_time [y] = internal_deco_time [x]; |
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748 |
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749 // Stop only once the last transfer is done. |
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750 if( x == 0 ) break; |
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751 } |
| 116 | 752 |
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753 //---- Third: fill table end with null |
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754 for(y++; y<32; y++) |
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755 { |
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756 char_O_deco_time [y] = 0; |
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757 char_O_deco_depth[y] = 0; |
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758 } |
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759 } |
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760 else //---- Straight copy ------------------------------------------------ |
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761 { |
| 167 | 762 overlay unsigned char x; |
| 763 | |
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764 for(x=0; x<32; x++) |
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765 { |
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766 char_O_deco_depth[x] = internal_deco_depth[x]; |
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767 char_O_deco_time [x] = internal_deco_time [x]; |
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768 } |
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769 } |
| 167 | 770 } |
| 116 | 771 |
| 167 | 772 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 773 // temp_tissue_safety // |
| 167 | 774 // |
| 116 | 775 // outsourced in v.102 |
| 167 | 776 // |
| 777 // Apply safety factors for brand ZH-L16 model. | |
| 778 // | |
| 779 static void temp_tissue_safety(void) | |
| 116 | 780 { |
| 167 | 781 if( char_I_deco_model == 0 ) |
| 116 | 782 { |
| 783 if (temp_tissue < 0.0) | |
| 126 | 784 temp_tissue *= float_desaturation_multiplier; |
| 116 | 785 else |
| 126 | 786 temp_tissue *= float_saturation_multiplier; |
| 116 | 787 } |
| 167 | 788 } |
| 116 | 789 |
| 167 | 790 ////////////////////////////////////////////////////////////////////////////// |
| 791 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 792 // ** THE JUMP-IN CODE ** |
| 793 // ** for the asm code ** | |
| 167 | 794 ////////////////////////////////////////////////////////////////////////////// |
| 795 ////////////////////////////////////////////////////////////////////////////// | |
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796 |
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797 void fillDataStack(void) |
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798 { |
| 184 | 799 #ifndef CROSS_COMPILE |
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800 _asm |
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801 LFSR 1,C_STACK |
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802 MOVLW 0xCC |
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803 loop: MOVWF POSTINC1,0 |
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804 TSTFSZ FSR1L,0 |
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805 BRA loop |
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806 |
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807 LFSR 1,C_STACK |
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808 LFSR 2,C_STACK |
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809 _endasm |
| 184 | 810 #endif |
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811 } |
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812 |
| 167 | 813 ////////////////////////////////////////////////////////////////////////////// |
|
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814 // When calling C code from ASM context, the data stack pointer and |
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815 // frames should be reset. Bank3 is dedicated to the stack (see the |
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816 // .lkr script). |
| 184 | 817 #ifdef CROSS_COMPILE |
| 818 # define RESET_C_STACK | |
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819 #else |
| 184 | 820 # ifdef __DEBUG |
| 821 # define RESET_C_STACK fillDataStack(); | |
| 822 # else | |
| 823 # define RESET_C_STACK \ | |
| 824 _asm \ | |
| 825 LFSR 1, C_STACK \ | |
| 826 LFSR 2, C_STACK \ | |
| 827 _endasm | |
| 828 # endif | |
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829 #endif |
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830 |
| 167 | 831 ////////////////////////////////////////////////////////////////////////////// |
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832 // Called every 2 seconds during diving. |
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833 // update tissues every time. |
| 184 | 834 // |
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835 // Every 6 seconds (or slower when TTS > 16): |
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836 // - update deco table (char_O_deco_time/depth) with new values. |
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837 // - update ascent time, |
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838 // - set status to zero (so we can check there is new results). |
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839 // |
| 116 | 840 void deco_calc_hauptroutine(void) |
| 841 { | |
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842 RESET_C_STACK |
| 116 | 843 calc_hauptroutine(); |
| 844 int_O_desaturation_time = 65535; | |
| 845 } | |
| 846 | |
| 167 | 847 ////////////////////////////////////////////////////////////////////////////// |
| 848 | |
| 116 | 849 void deco_calc_without_deco(void) |
| 850 { | |
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851 RESET_C_STACK |
| 192 | 852 calc_wo_deco_step_2s(); |
| 116 | 853 deco_calc_desaturation_time(); |
| 854 } | |
| 855 | |
| 167 | 856 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 857 // Reset decompression model: |
| 858 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 859 // + Reset last stop to 0m | |
| 860 // + Reset all model output. | |
| 116 | 861 void deco_clear_tissue(void) |
| 862 { | |
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863 RESET_C_STACK |
| 116 | 864 clear_tissue(); |
| 865 } | |
| 866 | |
| 167 | 867 ////////////////////////////////////////////////////////////////////////////// |
| 868 | |
| 116 | 869 void deco_calc_wo_deco_step_1_min(void) |
| 870 { | |
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871 RESET_C_STACK |
| 116 | 872 calc_wo_deco_step_1_min(); |
| 873 char_O_deco_status = 3; // surface new in v.102 overwrites value of calc_wo_deco_step_1_min | |
| 874 deco_calc_desaturation_time(); | |
| 875 } | |
| 876 | |
| 167 | 877 ////////////////////////////////////////////////////////////////////////////// |
| 878 | |
| 116 | 879 void deco_debug(void) |
| 880 { | |
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881 RESET_C_STACK |
| 116 | 882 } |
| 883 | |
| 167 | 884 ////////////////////////////////////////////////////////////////////////////// |
| 885 // clear_tissue | |
| 886 // | |
| 165 | 887 // optimized in v.101 (var_N2_a) |
| 167 | 888 // |
| 889 // preload tissues with standard pressure for the given ambient pressure. | |
| 890 // Note: fixed N2_ratio for standard air. | |
| 116 | 891 |
| 167 | 892 static void clear_tissue(void) |
| 116 | 893 { |
| 894 flag_in_divemode = 0; | |
| 895 int_O_DBS_bitfield = 0; | |
| 896 int_O_DBS2_bitfield = 0; | |
| 897 int_O_DBG_pre_bitfield = 0; | |
| 898 int_O_DBG_post_bitfield = 0; | |
| 899 char_O_NDL_at_20mtr = 255; | |
| 900 | |
| 167 | 901 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 902 N2_ratio = 0.7902; | |
| 126 | 903 pres_respiration = (float)int_I_pres_respiration / 1000.0; |
| 164 | 904 |
| 167 | 905 for(ci=0; ci<16; ci++) |
| 126 | 906 { |
| 164 | 907 // cycle through the 16 b"uhlmann tissues |
| 165 | 908 overlay float p = N2_ratio * (pres_respiration - 0.0627); |
| 164 | 909 pres_tissue[ci] = p; |
| 126 | 910 |
| 184 | 911 read_buhlmann_coefficients(-1); |
| 165 | 912 |
| 913 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 914 if( p < 0.0 ) |
| 915 p = 0.0; | |
| 916 pres_tissue_limit[ci] = p; | |
| 917 | |
| 918 // cycle through the 16 b"uhlmann tissues for Helium | |
| 167 | 919 (pres_tissue+16)[ci] = 0.0; |
| 126 | 920 } // for 0 to 16 |
| 116 | 921 |
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922 clear_deco_table(); |
| 126 | 923 char_O_deco_status = 0; |
| 924 char_O_nullzeit = 0; | |
| 168 | 925 int_O_ascenttime = 0; |
| 126 | 926 char_O_gradient_factor = 0; |
| 927 char_O_relative_gradient_GF = 0; | |
| 184 | 928 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 929 } |
| 116 | 930 |
| 167 | 931 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 932 // calc_wo_deco_step_2s |
| 167 | 933 // |
| 116 | 934 // optimized in v.101 (float_..saturation_multiplier) |
| 167 | 935 // |
| 936 // Note: fixed N2_ratio for standard air. | |
| 116 | 937 |
| 192 | 938 static void calc_wo_deco_step_2s(void) |
| 116 | 939 { |
| 167 | 940 N2_ratio = 0.7902; // Sum as stated in b"uhlmann |
| 126 | 941 pres_respiration = (float)int_I_pres_respiration / 1000.0; // assembler code uses different digit system |
| 192 | 942 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 | 943 temp_atem = N2_ratio * (pres_respiration - 0.0627); // 0.0627 is the extra pressure in the body |
| 944 temp2_atem = 0.0; | |
| 945 float_desaturation_multiplier = char_I_desaturation_multiplier / 100.0; | |
| 946 float_saturation_multiplier = char_I_saturation_multiplier / 100.0; | |
| 947 | |
| 192 | 948 calc_tissue(0); // update the pressure in the 32 tissues in accordance with the new ambient pressure for 2 seconds. |
| 126 | 949 |
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950 clear_deco_table(); |
| 126 | 951 char_O_deco_status = 0; |
| 952 char_O_nullzeit = 0; | |
| 168 | 953 int_O_ascenttime = 0; |
| 126 | 954 calc_gradient_factor(); |
| 167 | 955 } |
| 116 | 956 |
| 167 | 957 ////////////////////////////////////////////////////////////////////////////// |
| 958 // calc_hauptroutine | |
| 959 // | |
| 960 // this is the major code in dive mode calculates: | |
| 116 | 961 // the tissues, |
| 167 | 962 // the bottom time, |
| 963 // and simulates the ascend with all deco stops. | |
| 171 | 964 // |
| 965 // The deco_state sequence is : | |
| 966 // 3 (at surface) | |
| 967 // +---> 0 : calc nullzeit | |
| 968 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 969 // | +-> 1 : simulate up to 16min of stops. | |
| 970 // | +------< not finished | |
| 971 // +--------< finish | |
| 972 // | |
| 167 | 973 static void calc_hauptroutine(void) |
| 116 | 974 { |
| 186 | 975 static float backup_GF_step; |
| 192 | 976 static unsigned char backup_low_depth; |
| 186 | 977 |
| 116 | 978 calc_hauptroutine_data_input(); |
| 979 | |
| 980 if(!flag_in_divemode) | |
| 981 { | |
| 982 flag_in_divemode = 1; | |
| 983 create_dbs_set_dbg_and_ndl20mtr(); | |
| 984 } | |
| 985 else | |
| 986 check_pre_dbg(); | |
| 987 | |
| 988 calc_hauptroutine_update_tissues(); | |
| 989 calc_gradient_factor(); | |
| 990 | |
| 167 | 991 // toggle between calculation for nullzeit (bottom time), |
| 992 // deco stops | |
| 993 // and more deco stops (continue) | |
| 994 switch( char_O_deco_status ) | |
| 116 | 995 { |
| 186 | 996 case 3: //---- At surface: start a new dive ------------------------------ |
| 997 clear_deco_table(); | |
| 998 copy_deco_table(); | |
| 999 update_startvalues(); | |
| 192 | 1000 low_depth = 0; |
| 1001 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. | |
| 1002 backup_low_depth = 255; // backup is empty... | |
| 186 | 1003 break; |
| 1004 | |
| 167 | 1005 case 0: //---- bottom time ----------------------------------------------- |
| 1006 update_startvalues(); | |
| 1007 calc_nullzeit(); | |
| 1008 check_ndl(); | |
| 186 | 1009 char_O_deco_status = 2; // calc ascent next time. |
| 1010 break; | |
| 1011 | |
| 1012 case 2: //---- Simulate ascent to first stop ----------------------------- | |
| 1013 // Backup ascention state, ie if we already fixed the low GF reference, | |
| 1014 // and its value. | |
| 1015 backup_GF_step = locked_GF_step; | |
| 192 | 1016 backup_low_depth = low_depth; |
| 186 | 1017 |
| 1018 sim_ascent_to_first_stop(); | |
| 1019 char_O_deco_status = 1; // Cacl stops next time. | |
| 167 | 1020 break; |
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1021 |
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1022 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 1023 calc_hauptroutine_calc_deco(); |
| 186 | 1024 |
| 1025 // If simulation is finished, restore the GF low reference, so that | |
| 1026 // next ascent simulation is done from the current depth: | |
| 192 | 1027 if( char_O_deco_status == 0 && backup_low_depth != 255) |
| 186 | 1028 { |
| 1029 locked_GF_step = backup_GF_step; | |
| 192 | 1030 low_depth = backup_low_depth; |
| 1031 backup_low_depth = 255; | |
| 186 | 1032 } |
| 167 | 1033 break; |
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1034 |
| 116 | 1035 } |
| 167 | 1036 |
| 116 | 1037 check_post_dbg(); |
| 1038 } | |
| 1039 | |
| 167 | 1040 ////////////////////////////////////////////////////////////////////////////// |
| 1041 // calc_hauptroutine_data_input | |
| 1042 // | |
| 1043 // Reset all C-code dive parameters from their ASM-code values. | |
| 1044 // Detect gas change condition. | |
| 1045 // | |
| 116 | 1046 void calc_hauptroutine_data_input(void) |
| 1047 { | |
| 167 | 1048 overlay int int_temp; |
| 126 | 1049 |
| 167 | 1050 pres_respiration = int_I_pres_respiration / 1000.0; |
| 1051 pres_surface = int_I_pres_surface / 1000.0; | |
| 1052 N2_ratio = char_I_N2_ratio / 100.0; | |
| 1053 He_ratio = char_I_He_ratio / 100.0; | |
| 1054 deco_N2_ratio1 = char_I_deco_N2_ratio1 / 100.0; | |
| 1055 deco_He_ratio1 = char_I_deco_He_ratio1 / 100.0; | |
| 1056 deco_N2_ratio2 = char_I_deco_N2_ratio2 / 100.0; | |
| 1057 deco_He_ratio2 = char_I_deco_He_ratio2 / 100.0; | |
| 1058 deco_N2_ratio3 = char_I_deco_N2_ratio3 / 100.0; | |
| 1059 deco_He_ratio3 = char_I_deco_He_ratio3 / 100.0; | |
| 1060 deco_N2_ratio4 = char_I_deco_N2_ratio4 / 100.0; | |
| 1061 deco_He_ratio4 = char_I_deco_He_ratio4 / 100.0; | |
| 1062 deco_N2_ratio5 = char_I_deco_N2_ratio5 / 100.0; | |
| 1063 deco_He_ratio5 = char_I_deco_He_ratio5 / 100.0; | |
| 186 | 1064 float_deco_distance = char_I_deco_distance / 100.0; // Get offset is in mbar. |
| 116 | 1065 |
| 126 | 1066 // ____________________________________________________ |
| 1067 // | |
| 1068 // _____________ G A S _ C H A N G E S ________________ | |
| 1069 // ____________________________________________________ | |
| 1070 | |
| 1071 int_temp = (int_I_pres_respiration - int_I_pres_surface) + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 1072 | |
| 167 | 1073 deco_gas_change1 = 0; |
| 126 | 1074 deco_gas_change2 = 0; |
| 1075 deco_gas_change3 = 0; | |
| 1076 deco_gas_change4 = 0; | |
| 1077 deco_gas_change5 = 0; | |
| 116 | 1078 |
| 167 | 1079 if(char_I_deco_gas_change1) |
| 126 | 1080 { |
| 167 | 1081 overlay int int_temp2 = ((int)char_I_deco_gas_change1) * 100; |
| 126 | 1082 if(int_temp > int_temp2) |
| 1083 { | |
| 167 | 1084 deco_gas_change1 = (float)char_I_deco_gas_change1 / 9.995 + pres_surface; |
| 1085 deco_gas_change1 += float_deco_distance; | |
| 126 | 1086 } |
| 1087 } | |
| 1088 if(char_I_deco_gas_change2) | |
| 1089 { | |
| 167 | 1090 overlay int int_temp2 = ((int)char_I_deco_gas_change2) * 100; |
| 126 | 1091 if(int_temp > int_temp2) |
| 1092 { | |
| 1093 deco_gas_change2 = (float)char_I_deco_gas_change2 / 9.995 + pres_surface; | |
| 1094 deco_gas_change2 += float_deco_distance; | |
| 1095 } | |
| 1096 } | |
| 1097 if(char_I_deco_gas_change3) | |
| 1098 { | |
| 167 | 1099 overlay int int_temp2 = ((int)char_I_deco_gas_change3) * 100; |
| 126 | 1100 if(int_temp > int_temp2) |
| 1101 { | |
| 1102 deco_gas_change3 = (float)char_I_deco_gas_change3 / 9.995 + pres_surface; | |
| 1103 deco_gas_change3 += float_deco_distance; | |
| 1104 } | |
| 1105 } | |
| 1106 if(char_I_deco_gas_change4) | |
| 1107 { | |
| 167 | 1108 overlay int int_temp2 = ((int)char_I_deco_gas_change4) * 100; |
| 126 | 1109 if(int_temp > int_temp2) |
| 1110 { | |
| 1111 deco_gas_change4 = (float)char_I_deco_gas_change4 / 9.995 + pres_surface; | |
| 1112 deco_gas_change4 += float_deco_distance; | |
| 1113 } | |
| 1114 } | |
| 1115 if(char_I_deco_gas_change5) | |
| 1116 { | |
| 167 | 1117 overlay int int_temp2 = ((int)char_I_deco_gas_change5) * 100; |
| 126 | 1118 if(int_temp > int_temp2) |
| 1119 { | |
| 1120 deco_gas_change5 = (float)char_I_deco_gas_change5 / 9.995 + pres_surface; | |
| 1121 deco_gas_change5 += float_deco_distance; | |
| 1122 } | |
| 1123 } | |
| 116 | 1124 |
| 126 | 1125 const_ppO2 = (float)char_I_const_ppO2 / 100.0; |
| 1126 deco_ppO2_change = (float)char_I_deco_ppO2_change / 99.95 + pres_surface; | |
| 184 | 1127 deco_ppO2_change += float_deco_distance; |
| 126 | 1128 deco_ppO2 = (float)char_I_deco_ppO2 / 100.0; |
| 1129 float_desaturation_multiplier = char_I_desaturation_multiplier / 100.0; | |
| 1130 float_saturation_multiplier = char_I_saturation_multiplier / 100.0; | |
| 1131 GF_low = (float)char_I_GF_Low_percentage / 100.0; | |
| 1132 GF_high = (float)char_I_GF_High_percentage / 100.0; | |
| 1133 GF_delta = GF_high - GF_low; | |
| 116 | 1134 } |
| 1135 | |
| 167 | 1136 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1137 // |
| 1138 // | |
| 116 | 1139 void calc_hauptroutine_update_tissues(void) |
| 1140 { | |
| 167 | 1141 if (char_I_const_ppO2 == 0) // new in v.101 |
| 1142 pres_diluent = pres_respiration; // new in v.101 | |
| 186 | 1143 else |
| 1144 { | |
| 167 | 1145 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 |
| 186 | 1146 if (pres_diluent > pres_respiration) // new in v.101 |
| 1147 pres_diluent = pres_respiration; // new in v.101 | |
| 1148 } | |
| 167 | 1149 if (pres_diluent > 0.0627) // new in v.101 |
| 116 | 1150 { |
| 167 | 1151 temp_atem = N2_ratio * (pres_diluent - 0.0627); // changed in v.101 |
| 1152 temp2_atem = He_ratio * (pres_diluent - 0.0627); // changed in v.101 | |
| 116 | 1153 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1154 } | |
| 167 | 1155 else // new in v.101 |
| 116 | 1156 { |
| 167 | 1157 temp_atem = 0.0; // new in v.101 |
| 1158 temp2_atem = 0.0; // new in v.101 | |
| 116 | 1159 char_O_diluent = 0; |
| 1160 } | |
| 1161 | |
| 1162 if(!char_I_step_is_1min) | |
| 192 | 1163 calc_tissue(0); |
| 116 | 1164 else |
| 192 | 1165 calc_tissue(1); |
| 186 | 1166 |
| 192 | 1167 // Calc limit for surface, ie. GF_high. |
| 1168 calc_limit(GF_high); | |
| 186 | 1169 |
| 192 | 1170 int_O_gtissue_limit = (int)(calc_lead_tissue_limit * 1000); |
| 1171 int_O_gtissue_press = (int)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 1172 | |
| 1173 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1174 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1175 { |
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1176 char_O_nullzeit = 0; // deco necessary |
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1177 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1178 } |
| 171 | 1179 } |
| 1180 | |
| 1181 ////////////////////////////////////////////////////////////////////////////// | |
| 1182 // Calculate gas switches | |
| 1183 // | |
| 1184 // | |
| 1185 void check_gas_switch(void) | |
| 1186 { | |
| 1187 calc_N2_ratio = N2_ratio; | |
| 1188 calc_He_ratio = He_ratio; | |
| 1189 | |
| 1190 if (char_I_const_ppO2 == 0) | |
| 1191 { | |
| 1192 deco_diluent = temp_deco; | |
| 1193 calc_gas_switch = 0; | |
| 1194 | |
| 1195 if(deco_gas_change1 && (temp_deco < deco_gas_change1)) | |
| 1196 { | |
| 1197 calc_N2_ratio = deco_N2_ratio1; | |
| 1198 calc_He_ratio = deco_He_ratio1; | |
| 1199 calc_gas_switch = 1; | |
| 1200 } | |
| 1201 if(deco_gas_change2 && (temp_deco < deco_gas_change2)) | |
| 1202 { | |
| 1203 calc_N2_ratio = deco_N2_ratio2; | |
| 1204 calc_He_ratio = deco_He_ratio2; | |
| 1205 calc_gas_switch = 2; | |
| 1206 } | |
| 1207 if(deco_gas_change3 && (temp_deco < deco_gas_change3)) | |
| 1208 { | |
| 1209 calc_N2_ratio = deco_N2_ratio3; | |
| 1210 calc_He_ratio = deco_He_ratio3; | |
| 1211 calc_gas_switch = 3; | |
| 1212 } | |
| 1213 if(deco_gas_change4 && (temp_deco < deco_gas_change4)) | |
| 1214 { | |
| 1215 calc_N2_ratio = deco_N2_ratio4; | |
| 1216 calc_He_ratio = deco_He_ratio4; | |
| 1217 calc_gas_switch = 4; | |
| 1218 } | |
| 1219 if(deco_gas_change5 && (temp_deco < deco_gas_change5)) | |
| 1220 { | |
| 1221 calc_N2_ratio = deco_N2_ratio5; | |
| 1222 calc_He_ratio = deco_He_ratio5; | |
| 1223 calc_gas_switch = 4; | |
| 1224 } | |
| 1225 } | |
| 1226 else | |
| 1227 { | |
| 1228 if (temp_deco > deco_ppO2_change) | |
| 1229 { | |
| 1230 deco_diluent = ((temp_deco - const_ppO2)/(N2_ratio + He_ratio)); | |
| 1231 } | |
| 1232 else | |
| 1233 { | |
| 1234 deco_diluent = ((temp_deco - deco_ppO2)/(N2_ratio + He_ratio)); | |
| 1235 } | |
| 1236 } | |
| 1237 | |
| 1238 if (deco_diluent > temp_deco) | |
| 1239 deco_diluent = temp_deco; | |
| 1240 | |
| 1241 if (deco_diluent > 0.0627) | |
| 1242 { | |
| 1243 temp_atem = calc_N2_ratio * (deco_diluent - 0.0627); | |
| 1244 temp2_atem = calc_He_ratio * (deco_diluent - 0.0627); | |
| 1245 } | |
| 1246 else | |
| 1247 { | |
| 1248 temp_atem = 0.0; | |
| 1249 temp2_atem = 0.0; | |
| 1250 } | |
| 1251 } | |
| 116 | 1252 |
| 167 | 1253 ////////////////////////////////////////////////////////////////////////////// |
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1254 // Compute stops. |
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1255 // |
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1256 // Note: because this can be very long, break on 16 iterations, and set state |
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1257 // to 0 when finished, or to 1 when needing to continue. |
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1258 // |
| 116 | 1259 void calc_hauptroutine_calc_deco(void) |
| 1260 { | |
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1261 overlay unsigned char loop; |
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1262 |
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1263 for(loop = 0; loop < 16; ++loop) |
| 116 | 1264 { |
| 171 | 1265 calc_nextdecodepth(); |
| 116 | 1266 |
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1267 //---- Finish computations once surface is reached ------------------- |
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1268 if( temp_depth_limit <= 0 ) |
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1269 { |
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1270 copy_deco_table(); |
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1271 calc_ascenttime(); |
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1272 char_O_deco_status = 0; // calc nullzeit next time. |
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1273 return; |
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1274 } |
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1275 |
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1276 //---- Else, continue simulating the stops --------------------------- |
| 186 | 1277 check_gas_switch(); // Also updates ppN2 and ppHe. |
| 1278 | |
| 192 | 1279 sim_tissue(1); // Simulate compartiments for 1 minute. |
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1280 update_deco_table(); // Add one minute stops. |
| 116 | 1281 } |
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1282 |
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1283 // Surface not reached, need more stops... |
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1284 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1285 } |
| 1286 | |
| 167 | 1287 ////////////////////////////////////////////////////////////////////////////// |
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1288 // Simulation ascention to first deco stop. |
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1289 // |
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1290 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1291 // there is no need to break on more that 16 iterations |
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1292 // (or we are already in deep shit). |
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1293 // |
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1294 void sim_ascent_to_first_stop(void) |
| 116 | 1295 { |
| 171 | 1296 update_startvalues(); |
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1297 clear_deco_table(); |
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1298 |
| 116 | 1299 temp_deco = pres_respiration; |
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1300 |
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1301 // Loop until first top or surface is reached. |
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1302 for(;;) |
| 116 | 1303 { |
| 192 | 1304 temp_deco -= 1.0; // Ascent 1 min, at 10m/min. == 1bar/min. |
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1305 |
| 192 | 1306 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1307 sim_limit(GF_low); | |
| 116 | 1308 |
| 192 | 1309 // Did we reach first stop ? |
| 1310 if( temp_deco <= sim_lead_tissue_limit ) | |
| 171 | 1311 break; //Yes: finished ! |
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1312 |
| 171 | 1313 // Next stop is surface ? |
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1314 if( temp_deco <= pres_surface ) |
| 171 | 1315 break; // Yes: finished too. |
| 1316 | |
| 192 | 1317 //---- Simulat gas switches, and compute ppN2/ppHe at half the ascent: |
| 1318 temp_deco += 0.5; // Check gas change 5 meter below new depth. | |
| 171 | 1319 check_gas_switch(); |
| 192 | 1320 temp_deco -= 0.5; // Back to new depth. |
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1321 |
| 192 | 1322 // Then simulate with the new gas pressures... (1min) |
| 1323 sim_tissue(1); | |
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1324 } |
| 192 | 1325 temp_deco += 1.0; // Restore last correct depth. |
| 167 | 1326 } |
| 116 | 1327 |
| 167 | 1328 ////////////////////////////////////////////////////////////////////////////// |
| 1329 // calc_tissue | |
| 1330 // | |
| 116 | 1331 // optimized in v.101 |
| 167 | 1332 // |
| 184 | 1333 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1334 { |
| 126 | 1335 for (ci=0;ci<16;ci++) |
| 1336 { | |
| 184 | 1337 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1338 |
| 126 | 1339 // N2 |
| 165 | 1340 temp_tissue = (temp_atem - pres_tissue[ci]) * var_N2_e; |
| 126 | 1341 temp_tissue_safety(); |
| 167 | 1342 pres_tissue[ci] += temp_tissue; |
| 165 | 1343 |
| 126 | 1344 // He |
| 167 | 1345 temp_tissue = (temp2_atem - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1346 temp_tissue_safety(); |
| 167 | 1347 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1348 } |
| 167 | 1349 } |
| 116 | 1350 |
| 167 | 1351 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1352 // calc_limit |
| 167 | 1353 // |
| 192 | 1354 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1355 // |
| 192 | 1356 static void calc_limit(PARAMETER float GF_current) |
| 167 | 1357 { |
| 192 | 1358 char_O_gtissue_no = 255; |
| 1359 calc_lead_tissue_limit = 0.0; | |
| 1360 | |
| 1361 for (ci=0;ci<16;ci++) | |
| 1362 { | |
| 1363 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
| 1364 | |
| 1365 read_buhlmann_coefficients(-1); // 2 sec or 1 min period. | |
| 1366 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; | |
| 1367 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
| 116 | 1368 |
| 192 | 1369 // Apply the Eric Baker's varying gradient factor correction. |
| 1370 // Note: the correction factor depends both on GF and b, | |
| 1371 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1372 // so that can change who is the leading gas... | |
| 1373 // Note: Also depends of the GF. So the calcul is different for | |
| 1374 // GF_low, current GF, or GF_high... | |
| 1375 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1376 // hence what would happend at surface, | |
| 1377 // hence at GF_high. | |
| 1378 if( char_I_deco_model == 1 ) | |
| 1379 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1380 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1381 else | |
| 1382 p = (p - var_N2_a) * var_N2_b; | |
| 1383 if( p < 0 ) p = 0; | |
| 1384 | |
| 1385 pres_tissue_limit[ci] = p; | |
| 1386 if( p > calc_lead_tissue_limit ) | |
| 1387 { | |
| 1388 char_O_gtissue_no = ci; | |
| 1389 calc_lead_tissue_limit = p; | |
| 1390 } | |
| 1391 } | |
| 167 | 1392 } |
| 1393 | |
| 1394 ////////////////////////////////////////////////////////////////////////////// | |
| 1395 // calc_nullzeit | |
| 1396 // | |
| 1397 // calculates the remaining bottom time | |
| 1398 // | |
| 1399 // unchanged in v.101 | |
| 1400 // | |
| 1401 static void calc_nullzeit(void) | |
| 1402 { | |
| 1403 overlay int loop; | |
| 1404 | |
| 116 | 1405 char_O_nullzeit = 0; |
| 167 | 1406 for(loop = 1; loop <= 17; loop++) |
| 116 | 1407 { |
| 1408 backup_sim_pres_tissue(); | |
| 192 | 1409 sim_tissue(2); |
| 1410 sim_limit(GF_high); | |
| 167 | 1411 |
| 192 | 1412 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1413 { |
| 1414 restore_sim_pres_tissue(); | |
| 1415 break; | |
| 1416 } | |
| 1417 // Validate once we know its good. | |
| 1418 char_O_nullzeit += 10; | |
| 167 | 1419 } |
| 1420 | |
| 116 | 1421 if (char_O_nullzeit < 60) |
| 1422 { | |
| 167 | 1423 for(loop=1; loop <= 10; loop++) |
| 116 | 1424 { |
| 192 | 1425 sim_tissue(1); |
| 1426 sim_limit(GF_high); | |
| 1427 | |
| 1428 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1429 break; |
| 1430 char_O_nullzeit++; | |
| 167 | 1431 } |
| 185 | 1432 } |
| 1433 } | |
| 116 | 1434 |
| 167 | 1435 ////////////////////////////////////////////////////////////////////////////// |
| 1436 // backup_sim_pres_tissue | |
| 1437 // | |
| 116 | 1438 void backup_sim_pres_tissue(void) |
| 1439 { | |
| 167 | 1440 overlay unsigned char x; |
| 1441 | |
| 1442 for(x = 0; x<32; x++) | |
| 126 | 1443 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1444 } |
| 116 | 1445 |
| 167 | 1446 ////////////////////////////////////////////////////////////////////////////// |
| 1447 // restore_sim_pres_tissue | |
| 1448 // | |
| 116 | 1449 void restore_sim_pres_tissue(void) |
| 1450 { | |
| 167 | 1451 overlay unsigned char x; |
| 1452 | |
| 1453 for(x = 0; x<32; x++) | |
| 126 | 1454 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1455 } |
| 116 | 1456 |
| 167 | 1457 ////////////////////////////////////////////////////////////////////////////// |
| 1458 // calc_ascenttime | |
| 1459 // | |
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1460 static void calc_ascenttime(void) |
| 116 | 1461 { |
| 126 | 1462 if (pres_respiration > pres_surface) |
| 1463 { | |
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1464 overlay unsigned char x; |
| 168 | 1465 |
| 192 | 1466 // + 0.7 to count 1 minute ascent time from 3 meter to surface |
| 1467 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
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1468 if (ascent < 0.0) |
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1469 ascent = 0.0; |
| 192 | 1470 int_O_ascenttime = (unsigned int)(ascent + 0.99); |
| 168 | 1471 |
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1472 for(x=0; x<32 && internal_deco_depth[x]; x++) |
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1473 int_O_ascenttime += (unsigned int)internal_deco_time[x]; |
| 126 | 1474 } |
| 1475 else | |
| 168 | 1476 int_O_ascenttime = 0; |
| 167 | 1477 } |
| 116 | 1478 |
| 167 | 1479 ////////////////////////////////////////////////////////////////////////////// |
| 1480 // update_startvalues | |
| 1481 // | |
| 116 | 1482 // updated in v.102 |
| 167 | 1483 // |
| 116 | 1484 void update_startvalues(void) |
| 1485 { | |
| 167 | 1486 overlay unsigned char x; |
| 116 | 1487 |
| 1488 for (x = 0;x<16;x++) | |
| 1489 { | |
| 1490 sim_pres_tissue[x] = pres_tissue[x]; | |
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1491 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1492 sim_pres_tissue_limit[x] = pres_tissue_limit[x]; |
| 1493 } | |
| 167 | 1494 } |
| 116 | 1495 |
| 167 | 1496 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1497 // sim_tissue |
| 167 | 1498 // |
| 116 | 1499 // optimized in v.101 |
| 167 | 1500 // |
| 1501 // Function very simular to calc_tissue, but: | |
| 1502 // + Use a 1min or 10min period. | |
| 1503 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1504 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1505 { |
| 192 | 1506 for(ci=0; ci<16; ci++) |
| 126 | 1507 { |
| 184 | 1508 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1509 |
| 126 | 1510 // N2 |
| 165 | 1511 temp_tissue = (temp_atem - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1512 temp_tissue_safety(); |
| 167 | 1513 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1514 |
| 1515 // He | |
| 167 | 1516 temp_tissue = (temp2_atem - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1517 temp_tissue_safety(); |
| 167 | 1518 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1519 } |
| 167 | 1520 } |
| 116 | 1521 |
| 167 | 1522 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1523 // sim_limit() |
| 1524 // | |
| 1525 // New in v.111 | |
| 1526 // | |
| 1527 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1528 // different depth, because it depends on current gradient factor. | |
| 167 | 1529 // |
| 192 | 1530 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1531 { |
| 192 | 1532 sim_lead_tissue_limit = 0.0; |
| 1533 sim_lead_tissue_no = 255; | |
| 1534 | |
| 1535 for(ci=0; ci<16; ci++) | |
| 1536 { | |
| 1537 overlay float p = sim_pres_tissue[ci] + (sim_pres_tissue+16)[ci]; | |
| 1538 | |
| 1539 read_buhlmann_coefficients(-1); | |
| 1540 var_N2_a = (var_N2_a * sim_pres_tissue[ci] + var_He_a * (sim_pres_tissue+16)[ci]) / p; | |
| 1541 var_N2_b = (var_N2_b * sim_pres_tissue[ci] + var_He_b * (sim_pres_tissue+16)[ci]) / p; | |
| 1542 | |
| 1543 // Apply the Eric Baker's varying gradient factor correction. | |
| 1544 // Note: the correction factor depends both on GF and b, | |
| 1545 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1546 // so that can change who is the leading gas... | |
| 1547 // Note: Also depends of the GF_current... | |
| 1548 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1549 // hence what would happend at surface, | |
| 1550 // hence at GF_high. | |
| 1551 if( char_I_deco_model == 1 ) | |
| 1552 p = ( p - var_N2_a * GF_current) * var_N2_b | |
| 1553 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
| 1554 else | |
| 1555 p = (p - var_N2_a) * var_N2_b; | |
| 1556 if( p < 0 ) p = 0; | |
| 1557 | |
| 1558 sim_pres_tissue_limit[ci] = p; | |
| 1559 if( p > sim_lead_tissue_limit ) | |
| 1560 { | |
| 1561 sim_lead_tissue_no = ci; | |
| 1562 sim_lead_tissue_limit = p; | |
| 1563 } | |
| 1564 } // for ci | |
| 167 | 1565 } |
| 116 | 1566 |
| 167 | 1567 ////////////////////////////////////////////////////////////////////////////// |
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1568 // clear_deco_table |
| 167 | 1569 // |
| 1570 // unchanged in v.101 | |
| 1571 // | |
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1572 static void clear_deco_table(void) |
| 116 | 1573 { |
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1574 overlay unsigned char x; |
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1575 |
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1576 for(x=0; x<32; ++x) |
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1577 { |
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1578 internal_deco_time [x] = 0; |
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1579 internal_deco_depth[x] = 0; |
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1580 } |
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1581 } |
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1582 |
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1583 ////////////////////////////////////////////////////////////////////////////// |
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1584 // update_deco_table |
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1585 // |
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1586 // Add 1 min to current stop. |
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1587 // |
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1588 // Inputs: |
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1589 // temp_depth_limit = stop's depth, in meters. |
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1590 // In/Out: |
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1591 // internal_deco_depth[] : depth (in meters) of each stops. |
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1592 // internal_deco_time [] : time (in minutes) of each stops. |
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1593 // |
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1594 static void update_deco_table() |
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1595 { |
| 192 | 1596 overlay unsigned char x; |
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1597 |
| 192 | 1598 for(x=0; x<32; ++x) |
| 1599 { | |
| 1600 if( internal_deco_depth[x] == temp_depth_limit) | |
| 1601 { | |
| 1602 // Do not overflow (max 255') | |
| 1603 if( internal_deco_time[x] < 255 ) | |
| 1604 { | |
| 1605 internal_deco_time[x]++; | |
| 1606 return; | |
| 1607 } | |
| 1608 // But store extra in the next stop... | |
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1609 } |
| 192 | 1610 |
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1611 if( internal_deco_depth[x] == 0 ) |
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1612 { |
| 192 | 1613 internal_deco_depth[x] = temp_depth_limit; |
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1614 internal_deco_time[x] = 1; |
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1615 return; |
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1616 } |
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1617 } |
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1618 |
| 192 | 1619 // Can't store stops at more than 96m. |
| 1620 // Or stops at less that 3m too. | |
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1621 // Just do nothing with that... |
| 167 | 1622 } |
| 116 | 1623 |
| 167 | 1624 ////////////////////////////////////////////////////////////////////////////// |
| 1625 // calc_gradient_factor | |
| 1626 // | |
| 165 | 1627 // optimized in v.101 (var_N2_a) |
| 116 | 1628 // new code in v.102 |
| 167 | 1629 // |
| 1630 static void calc_gradient_factor(void) | |
| 116 | 1631 { |
| 1632 // tissue > respiration (entsaettigungsvorgang) | |
| 1633 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1634 // dh. 0% = respiration == tissue | |
| 1635 // dh. 100% = respiration == limit | |
| 1636 temp_tissue = pres_tissue[char_O_gtissue_no] + pres_tissue[char_O_gtissue_no+16]; | |
| 1637 temp1 = temp_tissue - pres_respiration; | |
| 1638 temp2 = temp_tissue - pres_tissue_limit[char_O_gtissue_no]; // changed in v.102 | |
| 1639 temp2 = temp1/temp2; | |
| 1640 temp2 = temp2 * 100; // displayed in percent | |
| 1641 if (temp2 < 0) | |
| 1642 temp2 = 0; | |
| 1643 if (temp2 > 255) | |
| 1644 temp2 = 255; | |
| 1645 if (temp1 < 0) | |
| 1646 char_O_gradient_factor = 0; | |
| 1647 else | |
| 1648 char_O_gradient_factor = (char)temp2; | |
| 1649 | |
| 1650 temp3 = temp2; | |
| 1651 | |
| 1652 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1653 { | |
| 192 | 1654 temp1 = (float)low_depth * 0.09995; |
| 116 | 1655 temp2 = pres_respiration - pres_surface; |
| 1656 if (temp2 <= 0) | |
| 1657 temp1 = GF_high; | |
| 186 | 1658 else if (temp2 >= temp1) |
| 116 | 1659 temp1 = GF_low; |
| 1660 else | |
| 1661 temp1 = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 186 | 1662 |
| 192 | 1663 if (low_depth == 0) |
| 116 | 1664 temp1 = GF_high; |
| 186 | 1665 |
| 116 | 1666 temp2 = temp3 / temp1; // temp3 is already in percent |
| 1667 if (temp2 < 0) | |
| 1668 temp2 = 0; | |
| 1669 if (temp2 > 255) | |
| 1670 temp2 = 255; | |
| 1671 char_O_relative_gradient_GF = (char)temp2; | |
| 1672 } // calc relative gradient factor | |
| 1673 else | |
| 1674 { | |
| 186 | 1675 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1676 } |
| 167 | 1677 } |
| 116 | 1678 |
| 167 | 1679 ////////////////////////////////////////////////////////////////////////////// |
| 1680 // deco_calc_desaturation_time | |
| 1681 // | |
| 116 | 1682 // FIXED N2_ratio |
| 1683 // unchanged in v.101 | |
| 167 | 1684 // |
| 116 | 1685 void deco_calc_desaturation_time(void) |
| 1686 { | |
| 184 | 1687 overlay unsigned int desat_time; // For a particular compartiment, in min. |
| 167 | 1688 |
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1689 RESET_C_STACK |
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1690 |
| 126 | 1691 N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann |
| 1692 pres_surface = (float)int_I_pres_surface / 1000.0; | |
| 1693 temp_atem = N2_ratio * (pres_surface - 0.0627); | |
| 1694 int_O_desaturation_time = 0; | |
| 1695 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 1696 | |
| 1697 for (ci=0;ci<16;ci++) | |
| 1698 { | |
| 165 | 1699 var_N2_halftime = buhlmann_ht[ci]; |
| 167 | 1700 var_He_halftime = (buhlmann_ht+16)[ci]; |
| 116 | 1701 |
| 126 | 1702 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1703 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1704 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1705 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1706 // N2 | |
| 1707 temp1 = 1.05 * temp_atem; | |
| 1708 temp1 = temp1 - pres_tissue[ci]; | |
| 1709 temp2 = temp_atem - pres_tissue[ci]; | |
| 1710 if (temp2 >= 0.0) | |
| 1711 { | |
| 1712 temp1 = 0; | |
| 1713 temp2 = 0; | |
| 1714 } | |
| 1715 else | |
| 1716 temp1 = temp1 / temp2; | |
| 1717 if (temp1 > 0.0) | |
| 1718 { | |
| 1719 temp1 = log(1.0 - temp1); | |
| 1720 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1721 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1722 // minus because log is negative | |
| 165 | 1723 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 | 1724 } |
| 1725 else | |
| 1726 { | |
| 1727 temp1 = 0; | |
| 1728 temp2 = 0; | |
| 1729 } | |
| 116 | 1730 |
| 126 | 1731 // He |
| 167 | 1732 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1733 if (temp3 >= 0.0) |
| 1734 { | |
| 1735 temp3 = 0; | |
| 1736 temp4 = 0; | |
| 1737 } | |
| 1738 else | |
| 167 | 1739 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 126 | 1740 if (temp3 > 0.0) |
| 1741 { | |
| 1742 temp3 = log(1.0 - temp3); | |
| 1743 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1744 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1745 // minus because log is negative | |
| 165 | 1746 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1747 } |
| 1748 else | |
| 1749 { | |
| 1750 temp3 = 0; | |
| 1751 temp4 = 0; | |
| 1752 } | |
| 116 | 1753 |
| 126 | 1754 // saturation_time (for flight) |
| 1755 if (temp4 > temp2) | |
| 184 | 1756 desat_time = (unsigned int)temp4; |
| 126 | 1757 else |
| 184 | 1758 desat_time = (unsigned int)temp2; |
| 167 | 1759 if(desat_time > int_O_desaturation_time) |
| 1760 int_O_desaturation_time = desat_time; | |
| 116 | 1761 |
| 126 | 1762 // N2 saturation in multiples of halftime for display purposes |
| 1763 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1764 temp2 = temp2 + 80.0; // set center | |
| 1765 if (temp2 < 0.0) | |
| 1766 temp2 = 0.0; | |
| 1767 if (temp2 > 255.0) | |
| 1768 temp2 = 255.0; | |
| 1769 char_O_tissue_saturation[ci] = (char)temp2; | |
| 1770 // He saturation in multiples of halftime for display purposes | |
| 1771 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1772 temp4 = temp4 + 80.0; // set center | |
| 1773 if (temp4 < 0.0) | |
| 1774 temp4 = 0.0; | |
| 1775 if (temp4 > 255.0) | |
| 1776 temp4 = 255.0; | |
| 167 | 1777 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1778 } // for |
| 167 | 1779 } |
| 116 | 1780 |
| 167 | 1781 ////////////////////////////////////////////////////////////////////////////// |
| 1782 // calc_wo_deco_step_1_min | |
| 1783 // | |
| 116 | 1784 // FIXED N2 Ratio |
| 1785 // optimized in v.101 (...saturation_multiplier) | |
| 1786 // desaturation slowed down to 70,42% | |
| 167 | 1787 // |
| 1788 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1789 { |
| 1790 if(flag_in_divemode) | |
| 1791 { | |
| 1792 flag_in_divemode = 0; | |
| 1793 set_dbg_end_of_dive(); | |
| 1794 } | |
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1795 |
| 126 | 1796 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 1797 pres_respiration = (float)int_I_pres_respiration / 1000.0; // assembler code uses different digit system | |
| 192 | 1798 pres_surface = (float)int_I_pres_surface / 1000.0; // the b"uhlmann formula using pres_surface does not use the N2_ratio |
| 126 | 1799 temp_atem = N2_ratio * (pres_respiration - 0.0627); // 0.0627 is the extra pressure in the body |
| 1800 temp2_atem = 0.0; | |
| 1801 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 1802 float_saturation_multiplier = char_I_saturation_multiplier / 100.0; | |
| 1803 | |
| 192 | 1804 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 1805 |
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1806 clear_deco_table(); |
| 126 | 1807 char_O_deco_status = 0; |
| 1808 char_O_nullzeit = 0; | |
| 168 | 1809 int_O_ascenttime = 0; |
| 126 | 1810 calc_gradient_factor(); |
| 167 | 1811 } |
| 126 | 1812 |
| 167 | 1813 ////////////////////////////////////////////////////////////////////////////// |
| 1814 ////////////////////////////////////////////////////////////////////////////// | |
| 1815 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1816 ////////////////////////////////////////////////////////////////////////////// | |
| 1817 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1818 |
| 184 | 1819 #ifndef CROSS_COMPILE |
| 116 | 1820 void deco_hash(void) |
| 1821 { | |
| 167 | 1822 overlay unsigned char md_i, md_j; // Loop index. |
| 1823 overlay unsigned char md_t; | |
| 1824 overlay unsigned char md_buffer[16]; | |
| 1825 overlay unsigned char md_temp; | |
| 1826 overlay unsigned int md_pointer; | |
| 1827 | |
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1828 RESET_C_STACK |
| 126 | 1829 |
| 1830 // init | |
| 164 | 1831 for(md_i=0;md_i<16;md_i++) |
| 126 | 1832 { |
| 1833 md_state[md_i] = 0; | |
| 164 | 1834 char_O_hash[md_i] = 0; |
| 126 | 1835 } // for md_i 16 |
| 116 | 1836 |
| 126 | 1837 _asm |
| 167 | 1838 movlw 0x01 // md_pi address. |
| 1839 movwf TBLPTRU,0 | |
| 1840 movlw 0x7E | |
| 1841 movwf TBLPTRH,0 | |
| 1842 movlw 0x00 | |
| 1843 movwf TBLPTRL,0 | |
| 126 | 1844 _endasm; |
| 165 | 1845 md_i = 0; |
| 1846 do { | |
| 126 | 1847 _asm |
| 1848 TBLRDPOSTINC | |
| 1849 movff TABLAT,md_temp | |
| 1850 _endasm | |
| 165 | 1851 md_pi_subst[md_i++] = md_temp; |
| 1852 } while( md_i != 0 ); | |
| 1853 | |
| 126 | 1854 _asm |
| 167 | 1855 movlw 0x00 |
| 1856 movwf TBLPTRU,0 | |
| 1857 movlw 0x00 | |
| 1858 movwf TBLPTRH,0 | |
| 1859 movlw 0x00 | |
| 1860 movwf TBLPTRL,0 | |
| 126 | 1861 _endasm |
| 167 | 1862 |
| 126 | 1863 // cycle buffers |
| 1864 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 1865 { | |
| 1866 md_t = 0; | |
| 1867 for (md_i=0;md_i<16;md_i++) | |
| 1868 { | |
| 1869 if(md_pointer == 9) | |
| 164 | 1870 md_temp = char_O_hash[md_i]; |
| 126 | 1871 else |
| 1872 { | |
| 1873 _asm | |
| 167 | 1874 TBLRDPOSTINC |
| 1875 movff TABLAT,md_temp | |
| 126 | 1876 _endasm |
| 1877 } // else | |
| 167 | 1878 |
| 1879 md_buffer[md_i] = md_temp; | |
| 186 | 1880 md_state[md_i+16] = md_temp; |
| 1881 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 1882 } // for md_i 16 |
| 1883 | |
| 1884 for (md_i=0;md_i<18;md_i++) | |
| 1885 { | |
| 1886 for (md_j=0;md_j<48;md_j++) | |
| 1887 { | |
| 167 | 1888 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 1889 md_t = md_state[md_j]; |
| 1890 } // for md_j 48 | |
| 1891 md_t = (unsigned char)(md_t+1); | |
| 1892 } // for md_i 18 | |
| 164 | 1893 md_t = char_O_hash[15]; |
| 126 | 1894 |
| 1895 for (md_i=0;md_i<16;md_i++) | |
| 1896 { | |
| 167 | 1897 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 1898 md_t = char_O_hash[md_i]; |
| 126 | 1899 } // for md_i 16 |
| 1900 } // for md_pointer | |
| 116 | 1901 } // void deco_hash(void) |
| 184 | 1902 #endif |
| 116 | 1903 |
| 167 | 1904 ////////////////////////////////////////////////////////////////////////////// |
| 1905 // deco_clear_CNS_fraction | |
| 1906 // | |
| 116 | 1907 // new in v.101 |
| 167 | 1908 // |
| 116 | 1909 void deco_clear_CNS_fraction(void) |
| 1910 { | |
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1911 RESET_C_STACK |
| 126 | 1912 CNS_fraction = 0.0; |
| 1913 char_O_CNS_fraction = 0; | |
| 167 | 1914 } |
| 116 | 1915 |
| 167 | 1916 ////////////////////////////////////////////////////////////////////////////// |
| 1917 // deco_calc_CNS_fraction | |
| 1918 // | |
| 116 | 1919 // new in v.101 |
| 1920 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 1921 // |
| 116 | 1922 // Input: char_I_actual_ppO2 |
| 1923 // Output: char_O_CNS_fraction | |
| 1924 // Uses and Updates: CNS_fraction | |
| 1925 // Uses: acutal_ppO2 | |
| 167 | 1926 // |
| 116 | 1927 void deco_calc_CNS_fraction(void) |
| 1928 { | |
| 167 | 1929 overlay float actual_ppO2; |
| 126 | 1930 RESET_C_STACK |
| 167 | 1931 |
| 126 | 1932 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 1933 |
| 126 | 1934 if (char_I_actual_ppO2 < 50) |
| 1935 CNS_fraction = CNS_fraction;// no changes | |
| 1936 else if (char_I_actual_ppO2 < 60) | |
| 1937 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 1938 else if (char_I_actual_ppO2 < 70) | |
| 1939 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 1940 else if (char_I_actual_ppO2 < 80) | |
| 1941 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 1942 else if (char_I_actual_ppO2 < 90) | |
| 1943 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 1944 else if (char_I_actual_ppO2 < 110) | |
| 1945 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 1946 else if (char_I_actual_ppO2 < 150) | |
| 1947 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 1948 else if (char_I_actual_ppO2 < 160) | |
| 1949 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 1950 else if (char_I_actual_ppO2 < 165) | |
| 1951 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 | |
| 1952 else if (char_I_actual_ppO2 < 170) | |
| 1953 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 1954 else if (char_I_actual_ppO2 < 175) | |
| 1955 CNS_fraction = 0.00136 + CNS_fraction; | |
| 1956 else if (char_I_actual_ppO2 < 180) | |
| 1957 CNS_fraction = 0.00180 + CNS_fraction; | |
| 1958 else if (char_I_actual_ppO2 < 185) | |
| 1959 CNS_fraction = 0.00237 + CNS_fraction; | |
| 1960 else if (char_I_actual_ppO2 < 190) | |
| 1961 CNS_fraction = 0.00310 + CNS_fraction; | |
| 1962 else if (char_I_actual_ppO2 < 195) | |
| 1963 CNS_fraction = 0.00401 + CNS_fraction; | |
| 1964 else if (char_I_actual_ppO2 < 200) | |
| 1965 CNS_fraction = 0.00517 + CNS_fraction; | |
| 1966 else if (char_I_actual_ppO2 < 230) | |
| 1967 CNS_fraction = 0.0209 + CNS_fraction; | |
| 1968 else | |
| 1969 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 1970 |
| 126 | 1971 if (CNS_fraction > 2.5) |
| 1972 CNS_fraction = 2.5; | |
| 1973 if (CNS_fraction < 0.0) | |
| 1974 CNS_fraction = 0.0; | |
| 1975 | |
| 1976 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 1977 } |
| 116 | 1978 |
| 167 | 1979 ////////////////////////////////////////////////////////////////////////////// |
| 1980 // deco_calc_CNS_decrease_15min | |
| 1981 // | |
| 116 | 1982 // new in v.101 |
| 167 | 1983 // |
| 116 | 1984 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 167 | 1985 // |
| 116 | 1986 // Output: char_O_CNS_fraction |
| 1987 // Uses and Updates: CNS_fraction | |
| 167 | 1988 // |
| 116 | 1989 void deco_calc_CNS_decrease_15min(void) |
| 1990 { | |
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1991 RESET_C_STACK |
| 126 | 1992 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 1993 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 1994 } | |
| 116 | 1995 |
| 167 | 1996 ////////////////////////////////////////////////////////////////////////////// |
| 1997 // deco_calc_percentage | |
| 1998 // | |
| 116 | 1999 // new in v.101 |
| 167 | 2000 // |
| 116 | 2001 // calculates int_I_temp * char_I_temp / 100 |
| 2002 // output is int_I_temp | |
| 2003 | |
| 2004 void deco_calc_percentage(void) | |
| 2005 { | |
|
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2006 RESET_C_STACK |
| 126 | 2007 temp1 = (float)int_I_temp; |
| 2008 temp2 = (float)char_I_temp / 100.0; | |
| 2009 temp3 = temp1 * temp2; | |
| 2010 int_I_temp = (int)temp3; | |
| 116 | 2011 } |
| 2012 | |
| 167 | 2013 ////////////////////////////////////////////////////////////////////////////// |
| 2014 | |
| 116 | 2015 void deco_push_tissues_to_vault(void) |
| 2016 { | |
| 167 | 2017 overlay unsigned char x; |
|
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2018 RESET_C_STACK |
| 167 | 2019 |
| 116 | 2020 cns_vault = CNS_fraction; |
| 167 | 2021 for (x=0;x<32;x++) |
| 2022 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2023 } |
| 167 | 2024 |
| 116 | 2025 void deco_pull_tissues_from_vault(void) |
| 2026 { | |
| 167 | 2027 overlay unsigned char x; |
|
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2028 RESET_C_STACK |
| 167 | 2029 |
| 116 | 2030 CNS_fraction = cns_vault; |
| 167 | 2031 for (x=0;x<32;x++) |
| 2032 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2033 } |
| 2034 | |
| 167 | 2035 ////////////////////////////////////////////////////////////////////////////// |
| 2036 // | |
| 184 | 2037 #ifndef CROSS_COMPILE |
| 2038 void main() {} | |
| 2039 #endif |