Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 185:ae3a83982ab2
BUGFIX NDL blocked to 11' (bb #9)
| author | JeanDo |
|---|---|
| date | Sun, 06 Feb 2011 20:03:48 +0100 |
| parents | 016c45a0caaf |
| children | 57a654c199ae |
| 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 |
| 91 // ************************* | |
| 92 // ** P R O T O T Y P E S ** | |
| 93 // ************************* | |
| 94 | |
| 95 static void calc_hauptroutine(void); | |
| 96 static void calc_tissue_2_secs(void); | |
| 97 static void calc_tissue_1_min(void); | |
| 98 static void calc_nullzeit(void); | |
| 99 static void backup_sim_pres_tissue(void); | |
| 100 static void restore_sim_pres_tissue(void); | |
| 101 | |
| 102 static void calc_without_deco(void); | |
| 103 static void clear_tissue(void); | |
| 104 static void calc_ascenttime(void); | |
| 105 static void update_startvalues(void); | |
|
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106 static void clear_deco_table(void); |
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107 static void update_deco_table(void); |
| 167 | 108 static void sim_tissue_1min(void); |
| 109 static void sim_tissue_10min(void); | |
| 110 static void calc_gradient_factor(void); | |
| 111 static void calc_wo_deco_step_1_min(void); | |
| 112 | |
| 113 static void calc_hauptroutine_data_input(void); | |
| 114 static void calc_hauptroutine_update_tissues(void); | |
| 115 static void calc_hauptroutine_calc_deco(void); | |
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116 static void sim_ascent_to_first_stop(void); |
| 167 | 117 |
| 171 | 118 static void calc_nextdecodepth(void); |
| 116 | 119 |
| 120 // *********************************************** | |
| 121 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 122 // *********************************************** | |
| 123 | |
| 167 | 124 #include "p2_definitions.h" |
| 184 | 125 #include "shared_definitions.h" |
| 116 | 126 |
| 163 | 127 //---- Bank 3 parameters ----------------------------------------------------- |
| 128 #pragma udata bank4=0x400 | |
| 116 | 129 |
| 130 static unsigned char lock_GF_depth_list; | |
| 131 static float temp_limit; | |
| 132 static float GF_low; | |
| 133 static float GF_high; | |
| 134 static float GF_delta; | |
| 171 | 135 static float locked_GF_step; |
| 136 | |
| 137 static float sim_pres_gtissue; | |
| 138 static float sim_pres_gtissue_diff; | |
| 139 static float sim_pres_gtissue_limit_GF_low; | |
| 140 static float sim_pres_gtissue_limit_GF_low_below_surface; | |
| 141 static unsigned char temp_depth_limit; | |
| 142 static float sim_pres_gtissue_limit; | |
| 143 static unsigned char sim_gtissue_no; | |
| 116 | 144 |
| 145 static unsigned char temp_depth_GF_low_meter; | |
| 146 static unsigned char internal_deco_pointer; | |
| 147 | |
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148 static unsigned char internal_deco_time[32]; |
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149 static unsigned char internal_deco_depth[32]; |
| 116 | 150 |
| 151 static float cns_vault; | |
| 152 static float pres_tissue_vault[32]; | |
| 153 | |
| 163 | 154 //---- Bank 5 parameters ----------------------------------------------------- |
| 155 #pragma udata bank5=0x500 | |
| 156 | |
| 167 | 157 static unsigned char ci; |
| 116 | 158 static float pres_respiration; |
| 159 static float pres_surface; | |
| 160 static float temp1; | |
| 161 static float temp2; | |
| 162 static float temp3; | |
| 163 static float temp4; | |
| 164 static float temp_deco; | |
| 165 static float temp_atem; | |
| 166 static float temp2_atem; | |
| 167 static float temp_tissue; | |
| 168 static float temp_surface; | |
| 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 static float pres_gtissue_limit; |
| 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: |
| 171 | 596 // sim_pres_gtissue_limit_GF_low |
| 597 // sim_pres_gtissue_limit_GF_low_below_surface | |
| 598 // sim_pres_gtissue | |
| 599 // sim_pres_gtissue_diff | |
| 167 | 600 // lock_GF_depth_list |
| 601 // | |
| 116 | 602 // INPUT, fixed during dive: |
| 167 | 603 // pres_surface |
| 604 // GF_delta | |
| 605 // GF_high | |
| 606 // GF_low | |
| 171 | 607 // char_I_depth_last_deco |
| 167 | 608 // float_deco_distance |
| 609 // | |
| 116 | 610 // OUTPUT |
| 171 | 611 // locked_GF_step |
| 167 | 612 // temp_deco |
| 613 // temp_depth_limt | |
| 614 // lock_GF_depth_list | |
| 615 // | |
| 171 | 616 static void calc_nextdecodepth(void) |
| 167 | 617 { |
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618 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 619 if (char_I_deco_model == 1) |
| 620 { | |
| 167 | 621 overlay float next_stop; // Next stop to test, in Bar. |
| 622 | |
| 116 | 623 if (lock_GF_depth_list == 0) |
| 624 { | |
| 171 | 625 overlay unsigned char temp_depth_GF_low_number; |
| 626 | |
| 627 next_stop = sim_pres_gtissue_limit_GF_low_below_surface / 0.29985; | |
| 628 temp_depth_GF_low_number = (int) (next_stop + 0.99); // Deepest stop index. | |
| 629 if (temp_depth_GF_low_number > 31) | |
| 630 temp_depth_GF_low_number = 31; // deepest deco at 93 meter (31 deco stops) | |
| 631 if (temp_depth_GF_low_number < 0) | |
| 632 temp_depth_GF_low_number = 0; | |
| 116 | 633 temp_depth_GF_low_meter = 3 * temp_depth_GF_low_number; |
| 167 | 634 next_stop = (float)temp_depth_GF_low_meter * 0.09995; |
| 116 | 635 if (temp_depth_GF_low_number == 0) |
| 171 | 636 locked_GF_step = 0; |
| 116 | 637 else |
| 171 | 638 locked_GF_step = GF_delta / (float)temp_depth_GF_low_number; |
| 639 lock_GF_depth_list = 1; | |
| 640 | |
| 641 // new run | |
| 642 internal_deco_pointer = temp_depth_GF_low_number; | |
| 643 } | |
| 644 | |
| 645 // Check all stops until one is higher that tolerated presure | |
| 646 while(internal_deco_pointer > 0) | |
| 647 { | |
| 648 overlay unsigned char index; // Next index (0..30) | |
| 649 overlay unsigned char next_depth_limit; // Next depth (0m..90m) | |
| 650 overlay float press_tol; // Upper limit (lower pressure) tolerated. | |
| 651 overlay float GF_temp; // Changing Gradient-Factor value at next depth. | |
| 652 | |
| 653 index = internal_deco_pointer - 1; // Index of next (upper) stop. | |
| 654 if (index == 1) // new in v104 | |
| 655 next_depth_limit = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 656 else | |
| 657 next_depth_limit = 3 * index; // Convert index to meter. | |
| 167 | 658 |
| 171 | 659 next_stop = next_depth_limit * 0.09995 // Meters to bar |
| 660 + pres_surface; | |
| 661 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 662 // With alpha = currentStop / (totalStops-1), hence in [0..1] | |
| 663 GF_temp = GF_high - (next_depth_limit/3) * locked_GF_step; | |
| 664 | |
| 665 // upper limit (lowest pressure tolerated): | |
| 666 press_tol = GF_temp * sim_pres_gtissue_diff + sim_pres_gtissue; | |
| 667 | |
| 668 if( press_tol > next_stop ) // check if ascent to next deco stop is ok | |
| 669 break; | |
| 670 | |
| 671 // Else, validate that stop and loop... | |
| 672 internal_deco_pointer = index; | |
| 116 | 673 } |
| 171 | 674 |
| 675 // Redo the results once we do have the validated index | |
| 676 if( internal_deco_pointer==1 ) | |
| 677 temp_depth_limit = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 678 else | |
| 679 temp_depth_limit = 3 * internal_deco_pointer; // Normal depth, from 0m to 96m | |
| 680 temp_deco = temp_depth_limit * 0.09995 // Convert to bars. | |
| 681 + pres_surface; | |
| 682 if (internal_deco_pointer != 0) | |
| 683 temp_deco += float_deco_distance; // Add security distance (bars too) | |
| 116 | 684 } |
| 167 | 685 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 686 { |
| 171 | 687 // calc_nextdecodepth - original model |
| 116 | 688 // optimized in v.101 |
| 171 | 689 // char_I_depth_last_deco included in v.101 |
| 116 | 690 |
| 171 | 691 overlay float pres_gradient = sim_pres_gtissue_limit - pres_surface; |
| 167 | 692 if (pres_gradient >= 0) |
| 116 | 693 { |
| 171 | 694 pres_gradient = pres_gradient / 0.29985; // == pres_gradient / 99.95 / 3m; |
| 695 temp_depth_limit = 3 * (int) (pres_gradient + 0.99); // depth for deco [m] | |
| 696 if (temp_depth_limit == 0) // At surface ? | |
| 116 | 697 temp_deco = pres_surface; |
| 698 else | |
| 699 { | |
| 171 | 700 if (temp_depth_limit < char_I_depth_last_deco) // Implement last stop at 4m/5m/6m... |
| 701 temp_depth_limit = char_I_depth_last_deco; | |
| 702 temp_deco = (temp_depth_limit * 0.09995) // depth for deco [bar] = depth | |
| 703 + float_deco_distance // + security margin | |
| 704 + pres_surface; // + surface ambient presure | |
| 705 } | |
| 706 } | |
| 116 | 707 else |
| 708 { | |
| 171 | 709 temp_deco = pres_surface; // surface ambient presure |
| 710 temp_depth_limit = 0; // stop number = 0 | |
| 711 } | |
| 712 } | |
| 167 | 713 } |
| 116 | 714 |
| 167 | 715 ////////////////////////////////////////////////////////////////////////////// |
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716 // copy_deco_table |
| 167 | 717 // |
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718 // Buffer the stops, once computed, so we can continue to display them |
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719 // while computing the next set. |
| 167 | 720 // |
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721 static void copy_deco_table(void) |
| 116 | 722 { |
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723 // Copy depth of the first (deepest) stop, because when reversing |
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724 // order, it will be hard to find... |
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725 char_O_first_deco_depth = internal_deco_depth[0]; |
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726 char_O_first_deco_time = internal_deco_time [0]; |
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727 |
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728 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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729 { |
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730 overlay unsigned char x, y; |
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731 |
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732 //---- First: search the first non-null depth |
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733 for(x=31; x != 0; --x) |
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734 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 735 |
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736 //---- Second: copy to output table (in reverse order) |
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737 for(y=0; y<32; y++, --x) |
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738 { |
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739 char_O_deco_depth[y] = internal_deco_depth[x]; |
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740 char_O_deco_time [y] = internal_deco_time [x]; |
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741 |
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742 // Stop only once the last transfer is done. |
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743 if( x == 0 ) break; |
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744 } |
| 116 | 745 |
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746 //---- Third: fill table end with null |
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747 for(y++; y<32; y++) |
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748 { |
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749 char_O_deco_time [y] = 0; |
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750 char_O_deco_depth[y] = 0; |
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751 } |
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752 } |
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753 else //---- Straight copy ------------------------------------------------ |
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754 { |
| 167 | 755 overlay unsigned char x; |
| 756 | |
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757 for(x=0; x<32; x++) |
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758 { |
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759 char_O_deco_depth[x] = internal_deco_depth[x]; |
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760 char_O_deco_time [x] = internal_deco_time [x]; |
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761 } |
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762 } |
| 167 | 763 } |
| 116 | 764 |
| 167 | 765 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 766 // temp_tissue_safety // |
| 167 | 767 // |
| 116 | 768 // outsourced in v.102 |
| 167 | 769 // |
| 770 // Apply safety factors for brand ZH-L16 model. | |
| 771 // | |
| 772 static void temp_tissue_safety(void) | |
| 116 | 773 { |
| 167 | 774 if( char_I_deco_model == 0 ) |
| 116 | 775 { |
| 776 if (temp_tissue < 0.0) | |
| 126 | 777 temp_tissue *= float_desaturation_multiplier; |
| 116 | 778 else |
| 126 | 779 temp_tissue *= float_saturation_multiplier; |
| 116 | 780 } |
| 167 | 781 } |
| 116 | 782 |
| 167 | 783 ////////////////////////////////////////////////////////////////////////////// |
| 784 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 785 // ** THE JUMP-IN CODE ** |
| 786 // ** for the asm code ** | |
| 167 | 787 ////////////////////////////////////////////////////////////////////////////// |
| 788 ////////////////////////////////////////////////////////////////////////////// | |
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789 |
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790 void fillDataStack(void) |
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791 { |
| 184 | 792 #ifndef CROSS_COMPILE |
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793 _asm |
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794 LFSR 1,C_STACK |
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795 MOVLW 0xCC |
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796 loop: MOVWF POSTINC1,0 |
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797 TSTFSZ FSR1L,0 |
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798 BRA loop |
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799 |
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800 LFSR 1,C_STACK |
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801 LFSR 2,C_STACK |
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802 _endasm |
| 184 | 803 #endif |
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804 } |
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805 |
| 167 | 806 ////////////////////////////////////////////////////////////////////////////// |
|
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807 // When calling C code from ASM context, the data stack pointer and |
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808 // frames should be reset. Bank3 is dedicated to the stack (see the |
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809 // .lkr script). |
| 184 | 810 #ifdef CROSS_COMPILE |
| 811 # define RESET_C_STACK | |
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812 #else |
| 184 | 813 # ifdef __DEBUG |
| 814 # define RESET_C_STACK fillDataStack(); | |
| 815 # else | |
| 816 # define RESET_C_STACK \ | |
| 817 _asm \ | |
| 818 LFSR 1, C_STACK \ | |
| 819 LFSR 2, C_STACK \ | |
| 820 _endasm | |
| 821 # endif | |
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822 #endif |
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823 |
| 167 | 824 ////////////////////////////////////////////////////////////////////////////// |
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825 // Called every 2 seconds during diving. |
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826 // update tissues every time. |
| 184 | 827 // |
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828 // Every 6 seconds (or slower when TTS > 16): |
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829 // - update deco table (char_O_deco_time/depth) with new values. |
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830 // - update ascent time, |
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831 // - set status to zero (so we can check there is new results). |
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832 // |
| 116 | 833 void deco_calc_hauptroutine(void) |
| 834 { | |
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835 RESET_C_STACK |
| 116 | 836 calc_hauptroutine(); |
| 837 int_O_desaturation_time = 65535; | |
| 838 } | |
| 839 | |
| 167 | 840 ////////////////////////////////////////////////////////////////////////////// |
| 841 | |
| 116 | 842 void deco_calc_without_deco(void) |
| 843 { | |
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844 RESET_C_STACK |
| 116 | 845 calc_without_deco(); |
| 846 deco_calc_desaturation_time(); | |
| 847 } | |
| 848 | |
| 167 | 849 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 850 // Reset decompression model: |
| 851 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 852 // + Reset last stop to 0m | |
| 853 // + Reset all model output. | |
| 116 | 854 void deco_clear_tissue(void) |
| 855 { | |
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856 RESET_C_STACK |
| 116 | 857 clear_tissue(); |
| 858 } | |
| 859 | |
| 167 | 860 ////////////////////////////////////////////////////////////////////////////// |
| 861 | |
| 116 | 862 void deco_calc_wo_deco_step_1_min(void) |
| 863 { | |
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864 RESET_C_STACK |
| 116 | 865 calc_wo_deco_step_1_min(); |
| 866 char_O_deco_status = 3; // surface new in v.102 overwrites value of calc_wo_deco_step_1_min | |
| 867 deco_calc_desaturation_time(); | |
| 868 } | |
| 869 | |
| 167 | 870 ////////////////////////////////////////////////////////////////////////////// |
| 871 | |
| 116 | 872 void deco_debug(void) |
| 873 { | |
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874 RESET_C_STACK |
| 116 | 875 } |
| 876 | |
| 167 | 877 ////////////////////////////////////////////////////////////////////////////// |
| 878 // clear_tissue | |
| 879 // | |
| 165 | 880 // optimized in v.101 (var_N2_a) |
| 167 | 881 // |
| 882 // preload tissues with standard pressure for the given ambient pressure. | |
| 883 // Note: fixed N2_ratio for standard air. | |
| 116 | 884 |
| 167 | 885 static void clear_tissue(void) |
| 116 | 886 { |
| 887 flag_in_divemode = 0; | |
| 888 int_O_DBS_bitfield = 0; | |
| 889 int_O_DBS2_bitfield = 0; | |
| 890 int_O_DBG_pre_bitfield = 0; | |
| 891 int_O_DBG_post_bitfield = 0; | |
| 892 char_O_NDL_at_20mtr = 255; | |
| 893 | |
| 167 | 894 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 895 N2_ratio = 0.7902; | |
| 126 | 896 pres_respiration = (float)int_I_pres_respiration / 1000.0; |
| 164 | 897 |
| 167 | 898 for(ci=0; ci<16; ci++) |
| 126 | 899 { |
| 164 | 900 // cycle through the 16 b"uhlmann tissues |
| 165 | 901 overlay float p = N2_ratio * (pres_respiration - 0.0627); |
| 164 | 902 pres_tissue[ci] = p; |
| 126 | 903 |
| 184 | 904 read_buhlmann_coefficients(-1); |
| 165 | 905 |
| 906 p = (p - var_N2_a) * var_N2_b ; | |
| 164 | 907 if( p < 0.0 ) |
| 908 p = 0.0; | |
| 909 pres_tissue_limit[ci] = p; | |
| 910 | |
| 911 // cycle through the 16 b"uhlmann tissues for Helium | |
| 167 | 912 (pres_tissue+16)[ci] = 0.0; |
| 126 | 913 } // for 0 to 16 |
| 116 | 914 |
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915 clear_deco_table(); |
| 126 | 916 char_O_deco_status = 0; |
| 917 char_O_nullzeit = 0; | |
| 168 | 918 int_O_ascenttime = 0; |
| 126 | 919 char_O_gradient_factor = 0; |
| 920 char_O_relative_gradient_GF = 0; | |
| 184 | 921 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 167 | 922 } |
| 116 | 923 |
| 167 | 924 ////////////////////////////////////////////////////////////////////////////// |
| 925 // calc_without_deco | |
| 926 // | |
| 116 | 927 // optimized in v.101 (float_..saturation_multiplier) |
| 167 | 928 // |
| 929 // Note: fixed N2_ratio for standard air. | |
| 116 | 930 |
| 167 | 931 static void calc_without_deco(void) |
| 116 | 932 { |
| 167 | 933 N2_ratio = 0.7902; // Sum as stated in b"uhlmann |
| 126 | 934 pres_respiration = (float)int_I_pres_respiration / 1000.0; // assembler code uses different digit system |
| 935 pres_surface = (float)int_I_pres_surface / 1000.0; | |
| 936 temp_atem = N2_ratio * (pres_respiration - 0.0627); // 0.0627 is the extra pressure in the body | |
| 937 temp2_atem = 0.0; | |
| 938 temp_surface = pres_surface; // the b"uhlmann formula using temp_surface does apply to the pressure without any inert ratio | |
| 939 float_desaturation_multiplier = char_I_desaturation_multiplier / 100.0; | |
| 940 float_saturation_multiplier = char_I_saturation_multiplier / 100.0; | |
| 941 | |
| 167 | 942 calc_tissue_2_secs(); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 126 | 943 |
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944 clear_deco_table(); |
| 126 | 945 char_O_deco_status = 0; |
| 946 char_O_nullzeit = 0; | |
| 168 | 947 int_O_ascenttime = 0; |
| 126 | 948 calc_gradient_factor(); |
| 167 | 949 } |
| 116 | 950 |
| 167 | 951 ////////////////////////////////////////////////////////////////////////////// |
| 952 // calc_hauptroutine | |
| 953 // | |
| 954 // this is the major code in dive mode calculates: | |
| 116 | 955 // the tissues, |
| 167 | 956 // the bottom time, |
| 957 // and simulates the ascend with all deco stops. | |
| 171 | 958 // |
| 959 // The deco_state sequence is : | |
| 960 // 3 (at surface) | |
| 961 // +---> 0 : calc nullzeit | |
| 962 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 963 // | +-> 1 : simulate up to 16min of stops. | |
| 964 // | +------< not finished | |
| 965 // +--------< finish | |
| 966 // | |
| 167 | 967 static void calc_hauptroutine(void) |
| 116 | 968 { |
| 969 calc_hauptroutine_data_input(); | |
| 970 | |
| 971 if(!flag_in_divemode) | |
| 972 { | |
| 973 flag_in_divemode = 1; | |
| 974 create_dbs_set_dbg_and_ndl20mtr(); | |
| 975 } | |
| 976 else | |
| 977 check_pre_dbg(); | |
| 978 | |
| 979 calc_hauptroutine_update_tissues(); | |
| 980 calc_gradient_factor(); | |
| 981 | |
| 167 | 982 // toggle between calculation for nullzeit (bottom time), |
| 983 // deco stops | |
| 984 // and more deco stops (continue) | |
| 985 switch( char_O_deco_status ) | |
| 116 | 986 { |
| 167 | 987 case 0: //---- bottom time ----------------------------------------------- |
| 988 update_startvalues(); | |
| 989 calc_nullzeit(); | |
| 990 check_ndl(); | |
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991 char_O_deco_status = 2; // calc ascent next time. |
| 167 | 992 break; |
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993 |
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994 case 1: //---- Simulate stops -------------------------------------------- |
| 167 | 995 calc_hauptroutine_calc_deco(); |
| 171 | 996 // Sets char_O_deco_status to 0 (buffered results, and restart nullzeit), |
| 997 // or 1 (more stops to simulate). | |
| 167 | 998 break; |
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999 |
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1000 case 3: //---- At surface: start a new dive ------------------------------ |
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1001 clear_deco_table(); |
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1002 copy_deco_table(); |
| 167 | 1003 internal_deco_pointer = 0; |
| 1004 lock_GF_depth_list = 0; | |
| 1005 update_startvalues(); | |
| 171 | 1006 calc_nextdecodepth(); |
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1007 char_O_deco_status = 0; // Calc nullzeit next time. |
| 167 | 1008 break; |
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1009 |
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1010 case 2: //---- Simulate ascent to first stop ----------------------------- |
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1011 sim_ascent_to_first_stop(); |
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1012 char_O_deco_status = 1; // Cacl stops next time. |
| 167 | 1013 break; |
| 116 | 1014 } |
| 167 | 1015 |
| 116 | 1016 check_post_dbg(); |
| 1017 } | |
| 1018 | |
| 167 | 1019 ////////////////////////////////////////////////////////////////////////////// |
| 1020 // calc_hauptroutine_data_input | |
| 1021 // | |
| 1022 // Reset all C-code dive parameters from their ASM-code values. | |
| 1023 // Detect gas change condition. | |
| 1024 // | |
| 116 | 1025 void calc_hauptroutine_data_input(void) |
| 1026 { | |
| 167 | 1027 overlay int int_temp; |
| 126 | 1028 |
| 167 | 1029 pres_respiration = int_I_pres_respiration / 1000.0; |
| 1030 pres_surface = int_I_pres_surface / 1000.0; | |
| 1031 N2_ratio = char_I_N2_ratio / 100.0; | |
| 1032 He_ratio = char_I_He_ratio / 100.0; | |
| 1033 deco_N2_ratio1 = char_I_deco_N2_ratio1 / 100.0; | |
| 1034 deco_He_ratio1 = char_I_deco_He_ratio1 / 100.0; | |
| 1035 deco_N2_ratio2 = char_I_deco_N2_ratio2 / 100.0; | |
| 1036 deco_He_ratio2 = char_I_deco_He_ratio2 / 100.0; | |
| 1037 deco_N2_ratio3 = char_I_deco_N2_ratio3 / 100.0; | |
| 1038 deco_He_ratio3 = char_I_deco_He_ratio3 / 100.0; | |
| 1039 deco_N2_ratio4 = char_I_deco_N2_ratio4 / 100.0; | |
| 1040 deco_He_ratio4 = char_I_deco_He_ratio4 / 100.0; | |
| 1041 deco_N2_ratio5 = char_I_deco_N2_ratio5 / 100.0; | |
| 1042 deco_He_ratio5 = char_I_deco_He_ratio5 / 100.0; | |
| 184 | 1043 float_deco_distance = char_I_deco_distance / 100.0; // Get offset is in mbar. |
| 116 | 1044 |
| 126 | 1045 // ____________________________________________________ |
| 1046 // | |
| 1047 // _____________ G A S _ C H A N G E S ________________ | |
| 1048 // ____________________________________________________ | |
| 1049 | |
| 1050 int_temp = (int_I_pres_respiration - int_I_pres_surface) + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 1051 | |
| 167 | 1052 deco_gas_change1 = 0; |
| 126 | 1053 deco_gas_change2 = 0; |
| 1054 deco_gas_change3 = 0; | |
| 1055 deco_gas_change4 = 0; | |
| 1056 deco_gas_change5 = 0; | |
| 116 | 1057 |
| 167 | 1058 if(char_I_deco_gas_change1) |
| 126 | 1059 { |
| 167 | 1060 overlay int int_temp2 = ((int)char_I_deco_gas_change1) * 100; |
| 126 | 1061 if(int_temp > int_temp2) |
| 1062 { | |
| 167 | 1063 deco_gas_change1 = (float)char_I_deco_gas_change1 / 9.995 + pres_surface; |
| 1064 deco_gas_change1 += float_deco_distance; | |
| 126 | 1065 } |
| 1066 } | |
| 1067 if(char_I_deco_gas_change2) | |
| 1068 { | |
| 167 | 1069 overlay int int_temp2 = ((int)char_I_deco_gas_change2) * 100; |
| 126 | 1070 if(int_temp > int_temp2) |
| 1071 { | |
| 1072 deco_gas_change2 = (float)char_I_deco_gas_change2 / 9.995 + pres_surface; | |
| 1073 deco_gas_change2 += float_deco_distance; | |
| 1074 } | |
| 1075 } | |
| 1076 if(char_I_deco_gas_change3) | |
| 1077 { | |
| 167 | 1078 overlay int int_temp2 = ((int)char_I_deco_gas_change3) * 100; |
| 126 | 1079 if(int_temp > int_temp2) |
| 1080 { | |
| 1081 deco_gas_change3 = (float)char_I_deco_gas_change3 / 9.995 + pres_surface; | |
| 1082 deco_gas_change3 += float_deco_distance; | |
| 1083 } | |
| 1084 } | |
| 1085 if(char_I_deco_gas_change4) | |
| 1086 { | |
| 167 | 1087 overlay int int_temp2 = ((int)char_I_deco_gas_change4) * 100; |
| 126 | 1088 if(int_temp > int_temp2) |
| 1089 { | |
| 1090 deco_gas_change4 = (float)char_I_deco_gas_change4 / 9.995 + pres_surface; | |
| 1091 deco_gas_change4 += float_deco_distance; | |
| 1092 } | |
| 1093 } | |
| 1094 if(char_I_deco_gas_change5) | |
| 1095 { | |
| 167 | 1096 overlay int int_temp2 = ((int)char_I_deco_gas_change5) * 100; |
| 126 | 1097 if(int_temp > int_temp2) |
| 1098 { | |
| 1099 deco_gas_change5 = (float)char_I_deco_gas_change5 / 9.995 + pres_surface; | |
| 1100 deco_gas_change5 += float_deco_distance; | |
| 1101 } | |
| 1102 } | |
| 116 | 1103 |
| 126 | 1104 const_ppO2 = (float)char_I_const_ppO2 / 100.0; |
| 1105 deco_ppO2_change = (float)char_I_deco_ppO2_change / 99.95 + pres_surface; | |
| 184 | 1106 deco_ppO2_change += float_deco_distance; |
| 126 | 1107 deco_ppO2 = (float)char_I_deco_ppO2 / 100.0; |
| 1108 float_desaturation_multiplier = char_I_desaturation_multiplier / 100.0; | |
| 1109 float_saturation_multiplier = char_I_saturation_multiplier / 100.0; | |
| 1110 GF_low = (float)char_I_GF_Low_percentage / 100.0; | |
| 1111 GF_high = (float)char_I_GF_High_percentage / 100.0; | |
| 1112 GF_delta = GF_high - GF_low; | |
| 116 | 1113 } |
| 1114 | |
| 167 | 1115 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1116 // |
| 1117 // | |
| 116 | 1118 void calc_hauptroutine_update_tissues(void) |
| 1119 { | |
| 167 | 1120 if (char_I_const_ppO2 == 0) // new in v.101 |
| 1121 pres_diluent = pres_respiration; // new in v.101 | |
| 1122 else // new in v.101 | |
| 1123 pres_diluent = ((pres_respiration - const_ppO2)/(N2_ratio + He_ratio)); // new in v.101 | |
| 1124 if (pres_diluent > pres_respiration) // new in v.101 | |
| 1125 pres_diluent = pres_respiration; // new in v.101 | |
| 1126 if (pres_diluent > 0.0627) // new in v.101 | |
| 116 | 1127 { |
| 167 | 1128 temp_atem = N2_ratio * (pres_diluent - 0.0627); // changed in v.101 |
| 1129 temp2_atem = He_ratio * (pres_diluent - 0.0627); // changed in v.101 | |
| 116 | 1130 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
| 1131 } | |
| 167 | 1132 else // new in v.101 |
| 116 | 1133 { |
| 167 | 1134 temp_atem = 0.0; // new in v.101 |
| 1135 temp2_atem = 0.0; // new in v.101 | |
| 116 | 1136 char_O_diluent = 0; |
| 1137 } | |
| 1138 temp_surface = pres_surface; | |
| 1139 | |
| 1140 if(!char_I_step_is_1min) | |
| 167 | 1141 calc_tissue_2_secs(); |
| 116 | 1142 else |
| 167 | 1143 calc_tissue_1_min(); |
| 116 | 1144 |
| 1145 int_O_gtissue_limit = (int)(pres_tissue_limit[char_O_gtissue_no] * 1000); | |
| 184 | 1146 int_O_gtissue_press = (int)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); |
| 116 | 1147 if (char_I_deco_model == 1) |
| 1148 { | |
| 1149 temp1 = temp1 * GF_high; | |
| 1150 } | |
| 1151 else | |
| 1152 { | |
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1153 temp1 = temp_surface; |
| 116 | 1154 } |
| 1155 if (pres_gtissue_limit > temp1 && char_O_deco_status == 0) // if guiding tissue can not be exposed to surface pressure immediately | |
| 1156 { | |
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1157 char_O_nullzeit = 0; // deco necessary |
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1158 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1159 } |
| 171 | 1160 } |
| 1161 | |
| 1162 ////////////////////////////////////////////////////////////////////////////// | |
| 1163 // Calculate gas switches | |
| 1164 // | |
| 1165 // | |
| 1166 void check_gas_switch(void) | |
| 1167 { | |
| 1168 calc_N2_ratio = N2_ratio; | |
| 1169 calc_He_ratio = He_ratio; | |
| 1170 | |
| 1171 if (char_I_const_ppO2 == 0) | |
| 1172 { | |
| 1173 deco_diluent = temp_deco; | |
| 1174 calc_gas_switch = 0; | |
| 1175 | |
| 1176 if(deco_gas_change1 && (temp_deco < deco_gas_change1)) | |
| 1177 { | |
| 1178 calc_N2_ratio = deco_N2_ratio1; | |
| 1179 calc_He_ratio = deco_He_ratio1; | |
| 1180 calc_gas_switch = 1; | |
| 1181 } | |
| 1182 if(deco_gas_change2 && (temp_deco < deco_gas_change2)) | |
| 1183 { | |
| 1184 calc_N2_ratio = deco_N2_ratio2; | |
| 1185 calc_He_ratio = deco_He_ratio2; | |
| 1186 calc_gas_switch = 2; | |
| 1187 } | |
| 1188 if(deco_gas_change3 && (temp_deco < deco_gas_change3)) | |
| 1189 { | |
| 1190 calc_N2_ratio = deco_N2_ratio3; | |
| 1191 calc_He_ratio = deco_He_ratio3; | |
| 1192 calc_gas_switch = 3; | |
| 1193 } | |
| 1194 if(deco_gas_change4 && (temp_deco < deco_gas_change4)) | |
| 1195 { | |
| 1196 calc_N2_ratio = deco_N2_ratio4; | |
| 1197 calc_He_ratio = deco_He_ratio4; | |
| 1198 calc_gas_switch = 4; | |
| 1199 } | |
| 1200 if(deco_gas_change5 && (temp_deco < deco_gas_change5)) | |
| 1201 { | |
| 1202 calc_N2_ratio = deco_N2_ratio5; | |
| 1203 calc_He_ratio = deco_He_ratio5; | |
| 1204 calc_gas_switch = 4; | |
| 1205 } | |
| 1206 } | |
| 1207 else | |
| 1208 { | |
| 1209 if (temp_deco > deco_ppO2_change) | |
| 1210 { | |
| 1211 deco_diluent = ((temp_deco - const_ppO2)/(N2_ratio + He_ratio)); | |
| 1212 } | |
| 1213 else | |
| 1214 { | |
| 1215 deco_diluent = ((temp_deco - deco_ppO2)/(N2_ratio + He_ratio)); | |
| 1216 } | |
| 1217 } | |
| 1218 | |
| 1219 if (deco_diluent > temp_deco) | |
| 1220 deco_diluent = temp_deco; | |
| 1221 | |
| 1222 if (deco_diluent > 0.0627) | |
| 1223 { | |
| 1224 temp_atem = calc_N2_ratio * (deco_diluent - 0.0627); | |
| 1225 temp2_atem = calc_He_ratio * (deco_diluent - 0.0627); | |
| 1226 } | |
| 1227 else | |
| 1228 { | |
| 1229 temp_atem = 0.0; | |
| 1230 temp2_atem = 0.0; | |
| 1231 } | |
| 1232 } | |
| 116 | 1233 |
| 167 | 1234 ////////////////////////////////////////////////////////////////////////////// |
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1235 // Compute stops. |
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1236 // |
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1237 // Note: because this can be very long, break on 16 iterations, and set state |
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1238 // to 0 when finished, or to 1 when needing to continue. |
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1239 // |
| 116 | 1240 void calc_hauptroutine_calc_deco(void) |
| 1241 { | |
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1242 overlay unsigned char loop; |
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1243 |
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1244 for(loop = 0; loop < 16; ++loop) |
| 116 | 1245 { |
| 171 | 1246 calc_nextdecodepth(); |
| 116 | 1247 |
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1248 //---- Finish computations once surface is reached ------------------- |
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1249 if( temp_depth_limit <= 0 ) |
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1250 { |
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1251 copy_deco_table(); |
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1252 calc_ascenttime(); |
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1253 char_O_deco_status = 0; // calc nullzeit next time. |
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1254 return; |
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1255 } |
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1256 |
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1257 //---- Else, continue simulating the stops --------------------------- |
| 171 | 1258 check_gas_switch(); |
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1259 |
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1260 sim_tissue_1min(); // Simulate compartiments for 1 minute. |
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1261 update_deco_table(); // Add one minute stops. |
| 116 | 1262 } |
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1263 |
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1264 // Surface not reached, need more stops... |
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1265 char_O_deco_status = 1; // calc more stops next time. |
| 116 | 1266 } |
| 1267 | |
| 167 | 1268 ////////////////////////////////////////////////////////////////////////////// |
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1269 // Simulation ascention to first deco stop. |
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1270 // |
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1271 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1272 // there is no need to break on more that 16 iterations |
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1273 // (or we are already in deep shit). |
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1274 // |
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1275 void sim_ascent_to_first_stop(void) |
| 116 | 1276 { |
| 171 | 1277 update_startvalues(); |
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1278 clear_deco_table(); |
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1279 |
| 116 | 1280 temp_deco = pres_respiration; |
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1281 |
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1282 // Loop until first top or surface is reached. |
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1283 for(;;) |
| 116 | 1284 { |
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1285 temp_deco = temp_deco - 1.0; // Ascent 1 min, at 10m/min. == 1bar/min. |
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1286 |
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1287 if ( char_I_deco_model == 1) |
| 171 | 1288 temp_limit = sim_pres_gtissue_limit_GF_low; |
| 116 | 1289 else |
| 171 | 1290 temp_limit = sim_pres_gtissue_limit; |
| 116 | 1291 |
| 171 | 1292 // Can we ascent directly to surface ? |
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1293 if( temp_deco <= temp_limit ) |
| 171 | 1294 break; //Yes: finished ! |
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1295 |
| 171 | 1296 // Next stop is surface ? |
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1297 if( temp_deco <= pres_surface ) |
| 171 | 1298 break; // Yes: finished too. |
| 1299 | |
| 1300 // The ascent is not done (already), so re-defined locked_GF_step: | |
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1301 lock_GF_depth_list = 0; |
| 116 | 1302 |
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1303 //---- Simulat gas switches, at half the ascent |
| 171 | 1304 temp_deco += 0.5; // Check gas change 5 meter below new depth. |
| 1305 check_gas_switch(); | |
| 1306 temp_deco -= 0.5; // Back to new depth. | |
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1307 |
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1308 // Then simulate with the new gas pressures...s |
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1309 sim_tissue_1min(); |
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1310 } |
| 167 | 1311 } |
| 116 | 1312 |
| 167 | 1313 ////////////////////////////////////////////////////////////////////////////// |
| 1314 // calc_tissue | |
| 1315 // | |
| 116 | 1316 // optimized in v.101 |
| 167 | 1317 // |
| 184 | 1318 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1319 { |
| 126 | 1320 char_O_gtissue_no = 255; |
| 1321 pres_gtissue_limit = 0.0; | |
| 1322 | |
| 1323 for (ci=0;ci<16;ci++) | |
| 1324 { | |
| 184 | 1325 read_buhlmann_coefficients(period); // 2 sec or 1 min period. |
| 116 | 1326 |
| 126 | 1327 // N2 |
| 165 | 1328 temp_tissue = (temp_atem - pres_tissue[ci]) * var_N2_e; |
| 126 | 1329 temp_tissue_safety(); |
| 167 | 1330 pres_tissue[ci] += temp_tissue; |
| 165 | 1331 |
| 126 | 1332 // He |
| 167 | 1333 temp_tissue = (temp2_atem - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1334 temp_tissue_safety(); |
| 167 | 1335 (pres_tissue+16)[ci] += temp_tissue; |
| 165 | 1336 |
| 167 | 1337 temp_tissue = pres_tissue[ci] + (pres_tissue+16)[ci]; |
| 116 | 1338 |
| 167 | 1339 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / temp_tissue; |
| 1340 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / temp_tissue; | |
| 165 | 1341 pres_tissue_limit[ci] = (temp_tissue - var_N2_a) * var_N2_b; |
| 126 | 1342 if (pres_tissue_limit[ci] < 0) |
| 1343 pres_tissue_limit[ci] = 0; | |
| 1344 if (pres_tissue_limit[ci] > pres_gtissue_limit) | |
| 1345 { | |
| 1346 pres_gtissue_limit = pres_tissue_limit[ci]; | |
| 1347 char_O_gtissue_no = ci; | |
| 1348 }//if | |
| 1349 } // for | |
| 167 | 1350 } |
| 116 | 1351 |
| 167 | 1352 ////////////////////////////////////////////////////////////////////////////// |
| 1353 // calc_tissue_2_secs | |
| 1354 // | |
| 1355 // optimized in v.101 | |
| 1356 // | |
| 1357 static void calc_tissue_2_secs(void) | |
| 1358 { | |
| 1359 calc_tissue(0); | |
| 1360 } | |
| 116 | 1361 |
| 167 | 1362 ////////////////////////////////////////////////////////////////////////////// |
| 1363 // calc_tissue_1_min | |
| 1364 // | |
| 1365 // optimized in v.101 | |
| 1366 // | |
| 1367 static void calc_tissue_1_min(void) | |
| 116 | 1368 { |
| 167 | 1369 calc_tissue(1); |
| 1370 } | |
| 1371 | |
| 1372 ////////////////////////////////////////////////////////////////////////////// | |
| 1373 // calc_nullzeit | |
| 1374 // | |
| 1375 // calculates the remaining bottom time | |
| 1376 // | |
| 1377 // unchanged in v.101 | |
| 1378 // | |
| 1379 static void calc_nullzeit(void) | |
| 1380 { | |
| 1381 overlay int loop; | |
| 1382 | |
| 116 | 1383 char_O_nullzeit = 0; |
| 167 | 1384 for(loop = 1; loop <= 17; loop++) |
| 116 | 1385 { |
| 1386 backup_sim_pres_tissue(); | |
| 1387 sim_tissue_10min(); | |
| 167 | 1388 |
| 116 | 1389 if (char_I_deco_model == 1) |
| 171 | 1390 temp1 = GF_high * sim_pres_gtissue_diff + sim_pres_gtissue; |
| 116 | 1391 else |
| 171 | 1392 temp1 = sim_pres_gtissue_limit; |
| 116 | 1393 if (temp1 > temp_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1394 { |
| 1395 restore_sim_pres_tissue(); | |
| 1396 break; | |
| 1397 } | |
| 1398 // Validate once we know its good. | |
| 1399 char_O_nullzeit += 10; | |
| 167 | 1400 } |
| 1401 | |
| 116 | 1402 if (char_O_nullzeit < 60) |
| 1403 { | |
| 167 | 1404 for(loop=1; loop <= 10; loop++) |
| 116 | 1405 { |
| 1406 sim_tissue_1min(); | |
| 167 | 1407 if (char_I_deco_model == 1) |
| 171 | 1408 temp1 = GF_high * sim_pres_gtissue_diff + sim_pres_gtissue; |
| 167 | 1409 else |
| 171 | 1410 temp1 = sim_pres_gtissue_limit; |
| 167 | 1411 if (temp1 > temp_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1412 break; |
| 1413 char_O_nullzeit++; | |
| 167 | 1414 } |
| 185 | 1415 } |
| 1416 } | |
| 116 | 1417 |
| 167 | 1418 ////////////////////////////////////////////////////////////////////////////// |
| 1419 // backup_sim_pres_tissue | |
| 1420 // | |
| 116 | 1421 void backup_sim_pres_tissue(void) |
| 1422 { | |
| 167 | 1423 overlay unsigned char x; |
| 1424 | |
| 1425 for(x = 0; x<32; x++) | |
| 126 | 1426 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1427 } |
| 116 | 1428 |
| 167 | 1429 ////////////////////////////////////////////////////////////////////////////// |
| 1430 // restore_sim_pres_tissue | |
| 1431 // | |
| 116 | 1432 void restore_sim_pres_tissue(void) |
| 1433 { | |
| 167 | 1434 overlay unsigned char x; |
| 1435 | |
| 1436 for(x = 0; x<32; x++) | |
| 126 | 1437 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1438 } |
| 116 | 1439 |
| 167 | 1440 ////////////////////////////////////////////////////////////////////////////// |
| 1441 // calc_ascenttime | |
| 1442 // | |
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1443 static void calc_ascenttime(void) |
| 116 | 1444 { |
| 126 | 1445 if (pres_respiration > pres_surface) |
| 1446 { | |
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1447 overlay unsigned char x; |
| 168 | 1448 |
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1449 // + 0.6 to count 1 minute ascent time from 4 meter to surface |
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1450 overlay float ascent = pres_respiration - pres_surface + 0.6; |
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1451 if (ascent < 0.0) |
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1452 ascent = 0.0; |
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1453 int_O_ascenttime = (unsigned int)ascent; |
| 168 | 1454 |
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1455 for(x=0; x<32 && internal_deco_depth[x]; x++) |
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1456 int_O_ascenttime += (unsigned int)internal_deco_time[x]; |
| 126 | 1457 } |
| 1458 else | |
| 168 | 1459 int_O_ascenttime = 0; |
| 167 | 1460 } |
| 116 | 1461 |
| 167 | 1462 ////////////////////////////////////////////////////////////////////////////// |
| 1463 // update_startvalues | |
| 1464 // | |
| 116 | 1465 // updated in v.102 |
| 167 | 1466 // |
| 116 | 1467 void update_startvalues(void) |
| 1468 { | |
| 167 | 1469 overlay unsigned char x; |
| 116 | 1470 |
| 171 | 1471 // Initialize data used to compute GF_low depth from current dive/simu |
| 1472 sim_gtissue_no = char_O_gtissue_no; | |
| 1473 sim_pres_gtissue_limit = pres_gtissue_limit; | |
| 1474 sim_pres_gtissue = pres_tissue[char_O_gtissue_no] + pres_tissue[char_O_gtissue_no+16]; | |
| 1475 sim_pres_gtissue_diff = sim_pres_gtissue_limit - sim_pres_gtissue; // negative number | |
| 1476 sim_pres_gtissue_limit_GF_low = GF_low * sim_pres_gtissue_diff + sim_pres_gtissue; | |
| 1477 sim_pres_gtissue_limit_GF_low_below_surface = sim_pres_gtissue_limit_GF_low - pres_surface; | |
| 1478 if (sim_pres_gtissue_limit_GF_low_below_surface < 0) | |
| 1479 sim_pres_gtissue_limit_GF_low_below_surface = 0; | |
| 1480 | |
| 116 | 1481 for (x = 0;x<16;x++) |
| 1482 { | |
| 1483 sim_pres_tissue[x] = pres_tissue[x]; | |
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1484 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1485 sim_pres_tissue_limit[x] = pres_tissue_limit[x]; |
| 1486 } | |
| 167 | 1487 } |
| 116 | 1488 |
| 167 | 1489 ////////////////////////////////////////////////////////////////////////////// |
| 1490 // sim_tissue_1min | |
| 1491 // | |
| 116 | 1492 // optimized in v.101 |
| 167 | 1493 // |
| 1494 // Function very simular to calc_tissue, but: | |
| 1495 // + Use a 1min or 10min period. | |
| 1496 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 1497 // + Update GF_low state for GF decompression model. | |
| 1498 // | |
| 184 | 1499 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1500 { |
| 171 | 1501 sim_pres_gtissue_limit = 0.0; |
| 1502 sim_gtissue_no = 255; | |
| 167 | 1503 |
| 126 | 1504 for (ci=0;ci<16;ci++) |
| 1505 { | |
| 184 | 1506 read_buhlmann_coefficients(period); // 1 or 10 minute(s) interval |
| 165 | 1507 |
| 126 | 1508 // N2 |
| 165 | 1509 temp_tissue = (temp_atem - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1510 temp_tissue_safety(); |
| 167 | 1511 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1512 |
| 1513 // He | |
| 167 | 1514 temp_tissue = (temp2_atem - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1515 temp_tissue_safety(); |
| 167 | 1516 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 126 | 1517 |
| 1518 // pressure limit | |
| 167 | 1519 temp_tissue = sim_pres_tissue[ci] + (sim_pres_tissue+16)[ci]; |
| 1520 var_N2_a = (var_N2_a * sim_pres_tissue[ci] + var_He_a * (sim_pres_tissue+16)[ci]) / temp_tissue; | |
| 1521 var_N2_b = (var_N2_b * sim_pres_tissue[ci] + var_He_b * (sim_pres_tissue+16)[ci]) / temp_tissue; | |
| 165 | 1522 sim_pres_tissue_limit[ci] = (temp_tissue - var_N2_a) * var_N2_b; |
| 126 | 1523 |
| 1524 if (sim_pres_tissue_limit[ci] < 0) | |
| 1525 sim_pres_tissue_limit[ci] = 0; | |
| 171 | 1526 if (sim_pres_tissue_limit[ci] > sim_pres_gtissue_limit) |
| 126 | 1527 { |
| 171 | 1528 sim_pres_gtissue = temp_tissue; |
| 1529 sim_pres_gtissue_limit = sim_pres_tissue_limit[ci]; | |
| 1530 sim_gtissue_no = ci; | |
| 126 | 1531 } |
| 1532 } // for | |
| 116 | 1533 |
| 171 | 1534 // Update data used to compute GF_low depth: |
| 1535 sim_pres_gtissue_diff = sim_pres_gtissue_limit - sim_pres_gtissue; | |
| 1536 sim_pres_gtissue_limit_GF_low = GF_low * sim_pres_gtissue_diff + sim_pres_gtissue; | |
| 1537 sim_pres_gtissue_limit_GF_low_below_surface = sim_pres_gtissue_limit_GF_low - pres_surface; | |
| 1538 if (sim_pres_gtissue_limit_GF_low_below_surface < 0) | |
| 1539 sim_pres_gtissue_limit_GF_low_below_surface = 0; | |
| 167 | 1540 } |
| 116 | 1541 |
| 167 | 1542 ////////////////////////////////////////////////////////////////////////////// |
| 1543 // sim_tissue_1min | |
| 1544 // | |
| 1545 static void sim_tissue_1min(void) | |
| 116 | 1546 { |
| 167 | 1547 sim_tissue(1); // 1 minute period |
| 1548 } | |
| 116 | 1549 |
| 167 | 1550 ////////////////////////////////////////////////////////////////////////////// |
| 1551 // sim_tissue_10min | |
| 1552 // | |
| 1553 static void sim_tissue_10min(void) | |
| 1554 { | |
| 1555 sim_tissue(2); // 10 minutes period | |
| 1556 } | |
| 1557 | |
| 1558 ////////////////////////////////////////////////////////////////////////////// | |
|
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1559 // clear_deco_table |
| 167 | 1560 // |
| 1561 // unchanged in v.101 | |
| 1562 // | |
|
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1563 static void clear_deco_table(void) |
| 116 | 1564 { |
|
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1565 overlay unsigned char x; |
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1566 |
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1567 for(x=0; x<32; ++x) |
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1568 { |
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1569 internal_deco_time [x] = 0; |
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1570 internal_deco_depth[x] = 0; |
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1571 } |
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1572 } |
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1573 |
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1574 ////////////////////////////////////////////////////////////////////////////// |
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1575 // update_deco_table |
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1576 // |
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1577 // Add 1 min to current stop. |
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1578 // |
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1579 // Inputs: |
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1580 // temp_depth_limit = stop's depth, in meters. |
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1581 // In/Out: |
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1582 // internal_deco_depth[] : depth (in meters) of each stops. |
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1583 // internal_deco_time [] : time (in minutes) of each stops. |
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1584 // |
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1585 static void update_deco_table() |
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1586 { |
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1587 overlay unsigned char x; |
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1588 |
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1589 if( temp_depth_limit > 255 ) // Can't store stops at more than 255m. |
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1590 temp_depth_limit = 255; |
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1591 |
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1592 for(x=0; x<32; ++x) |
| 116 | 1593 { |
|
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1594 // Did we found the right stop ? |
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1595 if( internal_deco_depth[x] == temp_depth_limit ) |
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1596 { |
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1597 // Increment stop time, but do test overflow: |
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1598 overlay int stop_time = 1 + (int)internal_deco_time[x]; |
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1599 if( stop_time > 255 ) |
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1600 stop_time = 255; |
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1601 internal_deco_time[x] = stop_time; |
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1602 |
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1603 // Done ! |
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1604 return; |
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1605 } |
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1606 |
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1607 if( internal_deco_depth[x] == 0 ) |
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1608 { |
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1609 // Found a free position: initialise it. |
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1610 internal_deco_depth[x] = (unsigned char)temp_depth_limit; |
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1611 internal_deco_time[x] = 1; |
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1612 return; |
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1613 } |
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1614 } |
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1615 |
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1616 // Here, there is no space left for stops. |
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1617 // Ie. the first one starts at 3m*32 positions = 96m... |
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1618 // Just do nothing with that... |
| 167 | 1619 } |
| 116 | 1620 |
| 167 | 1621 ////////////////////////////////////////////////////////////////////////////// |
| 1622 // calc_gradient_factor | |
| 1623 // | |
| 165 | 1624 // optimized in v.101 (var_N2_a) |
| 116 | 1625 // new code in v.102 |
| 167 | 1626 // |
| 1627 static void calc_gradient_factor(void) | |
| 116 | 1628 { |
| 1629 // tissue > respiration (entsaettigungsvorgang) | |
| 1630 // gradient ist wieviel prozent an limit mit basis tissue | |
| 1631 // dh. 0% = respiration == tissue | |
| 1632 // dh. 100% = respiration == limit | |
| 1633 temp_tissue = pres_tissue[char_O_gtissue_no] + pres_tissue[char_O_gtissue_no+16]; | |
| 1634 temp1 = temp_tissue - pres_respiration; | |
| 1635 temp2 = temp_tissue - pres_tissue_limit[char_O_gtissue_no]; // changed in v.102 | |
| 1636 temp2 = temp1/temp2; | |
| 1637 temp2 = temp2 * 100; // displayed in percent | |
| 1638 if (temp2 < 0) | |
| 1639 temp2 = 0; | |
| 1640 if (temp2 > 255) | |
| 1641 temp2 = 255; | |
| 1642 if (temp1 < 0) | |
| 1643 char_O_gradient_factor = 0; | |
| 1644 else | |
| 1645 char_O_gradient_factor = (char)temp2; | |
| 1646 | |
| 1647 temp3 = temp2; | |
| 1648 | |
| 1649 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1650 { | |
| 1651 temp1 = (float)temp_depth_GF_low_meter * 0.09995; | |
| 1652 temp2 = pres_respiration - pres_surface; | |
| 1653 if (temp2 <= 0) | |
| 1654 temp1 = GF_high; | |
| 1655 else | |
| 1656 if (temp2 >= temp1) | |
| 1657 temp1 = GF_low; | |
| 1658 else | |
| 1659 temp1 = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1660 if (temp_depth_GF_low_meter == 0) | |
| 1661 temp1 = GF_high; | |
| 1662 temp2 = temp3 / temp1; // temp3 is already in percent | |
| 1663 if (temp2 < 0) | |
| 1664 temp2 = 0; | |
| 1665 if (temp2 > 255) | |
| 1666 temp2 = 255; | |
| 1667 char_O_relative_gradient_GF = (char)temp2; | |
| 1668 } // calc relative gradient factor | |
| 1669 else | |
| 1670 { | |
| 1671 char_O_relative_gradient_GF = char_O_gradient_factor; | |
| 1672 } | |
| 167 | 1673 } |
| 116 | 1674 |
| 167 | 1675 ////////////////////////////////////////////////////////////////////////////// |
| 1676 // deco_calc_desaturation_time | |
| 1677 // | |
| 116 | 1678 // FIXED N2_ratio |
| 1679 // unchanged in v.101 | |
| 167 | 1680 // |
| 116 | 1681 void deco_calc_desaturation_time(void) |
| 1682 { | |
| 184 | 1683 overlay unsigned int desat_time; // For a particular compartiment, in min. |
| 167 | 1684 |
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1685 RESET_C_STACK |
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1686 |
| 126 | 1687 N2_ratio = 0.7902; // FIXED sum as stated in b"uhlmann |
| 1688 pres_surface = (float)int_I_pres_surface / 1000.0; | |
| 1689 temp_atem = N2_ratio * (pres_surface - 0.0627); | |
| 1690 int_O_desaturation_time = 0; | |
| 1691 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 1692 | |
| 1693 for (ci=0;ci<16;ci++) | |
| 1694 { | |
| 165 | 1695 var_N2_halftime = buhlmann_ht[ci]; |
| 167 | 1696 var_He_halftime = (buhlmann_ht+16)[ci]; |
| 116 | 1697 |
| 126 | 1698 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 1699 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1700 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 1701 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and noFly calculations | |
| 1702 // N2 | |
| 1703 temp1 = 1.05 * temp_atem; | |
| 1704 temp1 = temp1 - pres_tissue[ci]; | |
| 1705 temp2 = temp_atem - pres_tissue[ci]; | |
| 1706 if (temp2 >= 0.0) | |
| 1707 { | |
| 1708 temp1 = 0; | |
| 1709 temp2 = 0; | |
| 1710 } | |
| 1711 else | |
| 1712 temp1 = temp1 / temp2; | |
| 1713 if (temp1 > 0.0) | |
| 1714 { | |
| 1715 temp1 = log(1.0 - temp1); | |
| 1716 temp1 = temp1 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1717 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1718 // minus because log is negative | |
| 165 | 1719 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 | 1720 } |
| 1721 else | |
| 1722 { | |
| 1723 temp1 = 0; | |
| 1724 temp2 = 0; | |
| 1725 } | |
| 116 | 1726 |
| 126 | 1727 // He |
| 167 | 1728 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 1729 if (temp3 >= 0.0) |
| 1730 { | |
| 1731 temp3 = 0; | |
| 1732 temp4 = 0; | |
| 1733 } | |
| 1734 else | |
| 167 | 1735 temp3 = -1.0 * temp3 / (pres_tissue+16)[ci]; |
| 126 | 1736 if (temp3 > 0.0) |
| 1737 { | |
| 1738 temp3 = log(1.0 - temp3); | |
| 1739 temp3 = temp3 / -0.6931; // temp1 is the multiples of half times necessary. | |
| 1740 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. | |
| 1741 // minus because log is negative | |
| 165 | 1742 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 1743 } |
| 1744 else | |
| 1745 { | |
| 1746 temp3 = 0; | |
| 1747 temp4 = 0; | |
| 1748 } | |
| 116 | 1749 |
| 126 | 1750 // saturation_time (for flight) |
| 1751 if (temp4 > temp2) | |
| 184 | 1752 desat_time = (unsigned int)temp4; |
| 126 | 1753 else |
| 184 | 1754 desat_time = (unsigned int)temp2; |
| 167 | 1755 if(desat_time > int_O_desaturation_time) |
| 1756 int_O_desaturation_time = desat_time; | |
| 116 | 1757 |
| 126 | 1758 // N2 saturation in multiples of halftime for display purposes |
| 1759 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1760 temp2 = temp2 + 80.0; // set center | |
| 1761 if (temp2 < 0.0) | |
| 1762 temp2 = 0.0; | |
| 1763 if (temp2 > 255.0) | |
| 1764 temp2 = 255.0; | |
| 1765 char_O_tissue_saturation[ci] = (char)temp2; | |
| 1766 // He saturation in multiples of halftime for display purposes | |
| 1767 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 1768 temp4 = temp4 + 80.0; // set center | |
| 1769 if (temp4 < 0.0) | |
| 1770 temp4 = 0.0; | |
| 1771 if (temp4 > 255.0) | |
| 1772 temp4 = 255.0; | |
| 167 | 1773 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 1774 } // for |
| 167 | 1775 } |
| 116 | 1776 |
| 167 | 1777 ////////////////////////////////////////////////////////////////////////////// |
| 1778 // calc_wo_deco_step_1_min | |
| 1779 // | |
| 116 | 1780 // FIXED N2 Ratio |
| 1781 // optimized in v.101 (...saturation_multiplier) | |
| 1782 // desaturation slowed down to 70,42% | |
| 167 | 1783 // |
| 1784 static void calc_wo_deco_step_1_min(void) | |
| 116 | 1785 { |
| 1786 if(flag_in_divemode) | |
| 1787 { | |
| 1788 flag_in_divemode = 0; | |
| 1789 set_dbg_end_of_dive(); | |
| 1790 } | |
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1791 |
| 126 | 1792 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 1793 pres_respiration = (float)int_I_pres_respiration / 1000.0; // assembler code uses different digit system | |
| 1794 pres_surface = (float)int_I_pres_surface / 1000.0; | |
| 1795 temp_atem = N2_ratio * (pres_respiration - 0.0627); // 0.0627 is the extra pressure in the body | |
| 1796 temp2_atem = 0.0; | |
| 1797 temp_surface = pres_surface; // the b"uhlmann formula using temp_surface does not use the N2_ratio | |
| 1798 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 1799 float_saturation_multiplier = char_I_saturation_multiplier / 100.0; | |
| 1800 | |
| 167 | 1801 calc_tissue_1_min(); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 1802 | |
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1803 clear_deco_table(); |
| 126 | 1804 char_O_deco_status = 0; |
| 1805 char_O_nullzeit = 0; | |
| 168 | 1806 int_O_ascenttime = 0; |
| 126 | 1807 calc_gradient_factor(); |
| 167 | 1808 } |
| 126 | 1809 |
| 167 | 1810 ////////////////////////////////////////////////////////////////////////////// |
| 1811 ////////////////////////////////////////////////////////////////////////////// | |
| 1812 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 1813 ////////////////////////////////////////////////////////////////////////////// | |
| 1814 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 1815 |
| 184 | 1816 #ifndef CROSS_COMPILE |
| 116 | 1817 void deco_hash(void) |
| 1818 { | |
| 167 | 1819 overlay unsigned char md_i, md_j; // Loop index. |
| 1820 overlay unsigned char md_t; | |
| 1821 overlay unsigned char md_buffer[16]; | |
| 1822 overlay unsigned char md_temp; | |
| 1823 overlay unsigned int md_pointer; | |
| 1824 | |
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1825 RESET_C_STACK |
| 126 | 1826 |
| 1827 // init | |
| 164 | 1828 for(md_i=0;md_i<16;md_i++) |
| 126 | 1829 { |
| 1830 md_state[md_i] = 0; | |
| 164 | 1831 char_O_hash[md_i] = 0; |
| 126 | 1832 } // for md_i 16 |
| 116 | 1833 |
| 126 | 1834 _asm |
| 167 | 1835 movlw 0x01 // md_pi address. |
| 1836 movwf TBLPTRU,0 | |
| 1837 movlw 0x7E | |
| 1838 movwf TBLPTRH,0 | |
| 1839 movlw 0x00 | |
| 1840 movwf TBLPTRL,0 | |
| 126 | 1841 _endasm; |
| 165 | 1842 md_i = 0; |
| 1843 do { | |
| 126 | 1844 _asm |
| 1845 TBLRDPOSTINC | |
| 1846 movff TABLAT,md_temp | |
| 1847 _endasm | |
| 165 | 1848 md_pi_subst[md_i++] = md_temp; |
| 1849 } while( md_i != 0 ); | |
| 1850 | |
| 126 | 1851 _asm |
| 167 | 1852 movlw 0x00 |
| 1853 movwf TBLPTRU,0 | |
| 1854 movlw 0x00 | |
| 1855 movwf TBLPTRH,0 | |
| 1856 movlw 0x00 | |
| 1857 movwf TBLPTRL,0 | |
| 126 | 1858 _endasm |
| 167 | 1859 |
| 126 | 1860 // cycle buffers |
| 1861 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 1862 { | |
| 1863 md_t = 0; | |
| 1864 for (md_i=0;md_i<16;md_i++) | |
| 1865 { | |
| 1866 if(md_pointer == 9) | |
| 164 | 1867 md_temp = char_O_hash[md_i]; |
| 126 | 1868 else |
| 1869 { | |
| 1870 _asm | |
| 167 | 1871 TBLRDPOSTINC |
| 1872 movff TABLAT,md_temp | |
| 126 | 1873 _endasm |
| 1874 } // else | |
| 167 | 1875 |
| 1876 md_buffer[md_i] = md_temp; | |
| 126 | 1877 md_state[md_i+16] = md_buffer[md_i]; |
| 1878 md_state[md_i+32] = (unsigned char)(md_buffer[md_i] ^ md_state[md_i]); | |
| 1879 } // for md_i 16 | |
| 1880 | |
| 1881 for (md_i=0;md_i<18;md_i++) | |
| 1882 { | |
| 1883 for (md_j=0;md_j<48;md_j++) | |
| 1884 { | |
| 167 | 1885 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 1886 md_t = md_state[md_j]; |
| 1887 } // for md_j 48 | |
| 1888 md_t = (unsigned char)(md_t+1); | |
| 1889 } // for md_i 18 | |
| 164 | 1890 md_t = char_O_hash[15]; |
| 126 | 1891 |
| 1892 for (md_i=0;md_i<16;md_i++) | |
| 1893 { | |
| 167 | 1894 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 1895 md_t = char_O_hash[md_i]; |
| 126 | 1896 } // for md_i 16 |
| 1897 } // for md_pointer | |
| 116 | 1898 } // void deco_hash(void) |
| 184 | 1899 #endif |
| 116 | 1900 |
| 167 | 1901 ////////////////////////////////////////////////////////////////////////////// |
| 1902 // deco_clear_CNS_fraction | |
| 1903 // | |
| 116 | 1904 // new in v.101 |
| 167 | 1905 // |
| 116 | 1906 void deco_clear_CNS_fraction(void) |
| 1907 { | |
|
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1908 RESET_C_STACK |
| 126 | 1909 CNS_fraction = 0.0; |
| 1910 char_O_CNS_fraction = 0; | |
| 167 | 1911 } |
| 116 | 1912 |
| 167 | 1913 ////////////////////////////////////////////////////////////////////////////// |
| 1914 // deco_calc_CNS_fraction | |
| 1915 // | |
| 116 | 1916 // new in v.101 |
| 1917 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 1918 // |
| 116 | 1919 // Input: char_I_actual_ppO2 |
| 1920 // Output: char_O_CNS_fraction | |
| 1921 // Uses and Updates: CNS_fraction | |
| 1922 // Uses: acutal_ppO2 | |
| 167 | 1923 // |
| 116 | 1924 void deco_calc_CNS_fraction(void) |
| 1925 { | |
| 167 | 1926 overlay float actual_ppO2; |
| 126 | 1927 RESET_C_STACK |
| 167 | 1928 |
| 126 | 1929 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 116 | 1930 |
| 126 | 1931 if (char_I_actual_ppO2 < 50) |
| 1932 CNS_fraction = CNS_fraction;// no changes | |
| 1933 else if (char_I_actual_ppO2 < 60) | |
| 1934 CNS_fraction = 1/(-54000.0 * actual_ppO2 + 54000.0) + CNS_fraction; | |
| 1935 else if (char_I_actual_ppO2 < 70) | |
| 1936 CNS_fraction = 1/(-45000.0 * actual_ppO2 + 48600.0) + CNS_fraction; | |
| 1937 else if (char_I_actual_ppO2 < 80) | |
| 1938 CNS_fraction = 1/(-36000.0 * actual_ppO2 + 42300.0) + CNS_fraction; | |
| 1939 else if (char_I_actual_ppO2 < 90) | |
| 1940 CNS_fraction = 1/(-27000.0 * actual_ppO2 + 35100.0) + CNS_fraction; | |
| 1941 else if (char_I_actual_ppO2 < 110) | |
| 1942 CNS_fraction = 1/(-18000.0 * actual_ppO2 + 27000.0) + CNS_fraction; | |
| 1943 else if (char_I_actual_ppO2 < 150) | |
| 1944 CNS_fraction = 1/(-9000.0 * actual_ppO2 + 17100.0) + CNS_fraction; | |
| 1945 else if (char_I_actual_ppO2 < 160) | |
| 1946 CNS_fraction = 1/(-22500.0 * actual_ppO2 + 37350.0) + CNS_fraction; | |
| 1947 else if (char_I_actual_ppO2 < 165) | |
| 1948 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 | |
| 1949 else if (char_I_actual_ppO2 < 170) | |
| 1950 CNS_fraction = 0.00102 + CNS_fraction; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 | |
| 1951 else if (char_I_actual_ppO2 < 175) | |
| 1952 CNS_fraction = 0.00136 + CNS_fraction; | |
| 1953 else if (char_I_actual_ppO2 < 180) | |
| 1954 CNS_fraction = 0.00180 + CNS_fraction; | |
| 1955 else if (char_I_actual_ppO2 < 185) | |
| 1956 CNS_fraction = 0.00237 + CNS_fraction; | |
| 1957 else if (char_I_actual_ppO2 < 190) | |
| 1958 CNS_fraction = 0.00310 + CNS_fraction; | |
| 1959 else if (char_I_actual_ppO2 < 195) | |
| 1960 CNS_fraction = 0.00401 + CNS_fraction; | |
| 1961 else if (char_I_actual_ppO2 < 200) | |
| 1962 CNS_fraction = 0.00517 + CNS_fraction; | |
| 1963 else if (char_I_actual_ppO2 < 230) | |
| 1964 CNS_fraction = 0.0209 + CNS_fraction; | |
| 1965 else | |
| 1966 CNS_fraction = 0.0482 + CNS_fraction; // value for 2.5 | |
| 116 | 1967 |
| 126 | 1968 if (CNS_fraction > 2.5) |
| 1969 CNS_fraction = 2.5; | |
| 1970 if (CNS_fraction < 0.0) | |
| 1971 CNS_fraction = 0.0; | |
| 1972 | |
| 1973 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 1974 } |
| 116 | 1975 |
| 167 | 1976 ////////////////////////////////////////////////////////////////////////////// |
| 1977 // deco_calc_CNS_decrease_15min | |
| 1978 // | |
| 116 | 1979 // new in v.101 |
| 167 | 1980 // |
| 116 | 1981 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 167 | 1982 // |
| 116 | 1983 // Output: char_O_CNS_fraction |
| 1984 // Uses and Updates: CNS_fraction | |
| 167 | 1985 // |
| 116 | 1986 void deco_calc_CNS_decrease_15min(void) |
| 1987 { | |
|
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1988 RESET_C_STACK |
| 126 | 1989 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 1990 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 1991 } | |
| 116 | 1992 |
| 167 | 1993 ////////////////////////////////////////////////////////////////////////////// |
| 1994 // deco_calc_percentage | |
| 1995 // | |
| 116 | 1996 // new in v.101 |
| 167 | 1997 // |
| 116 | 1998 // calculates int_I_temp * char_I_temp / 100 |
| 1999 // output is int_I_temp | |
| 2000 | |
| 2001 void deco_calc_percentage(void) | |
| 2002 { | |
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2003 RESET_C_STACK |
| 126 | 2004 temp1 = (float)int_I_temp; |
| 2005 temp2 = (float)char_I_temp / 100.0; | |
| 2006 temp3 = temp1 * temp2; | |
| 2007 int_I_temp = (int)temp3; | |
| 116 | 2008 } |
| 2009 | |
| 167 | 2010 ////////////////////////////////////////////////////////////////////////////// |
| 2011 | |
| 116 | 2012 void deco_push_tissues_to_vault(void) |
| 2013 { | |
| 167 | 2014 overlay unsigned char x; |
|
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2015 RESET_C_STACK |
| 167 | 2016 |
| 116 | 2017 cns_vault = CNS_fraction; |
| 167 | 2018 for (x=0;x<32;x++) |
| 2019 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2020 } |
| 167 | 2021 |
| 116 | 2022 void deco_pull_tissues_from_vault(void) |
| 2023 { | |
| 167 | 2024 overlay unsigned char x; |
|
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2025 RESET_C_STACK |
| 167 | 2026 |
| 116 | 2027 CNS_fraction = cns_vault; |
| 167 | 2028 for (x=0;x<32;x++) |
| 2029 pres_tissue[x] = pres_tissue_vault[x]; | |
| 116 | 2030 } |
| 2031 | |
| 167 | 2032 ////////////////////////////////////////////////////////////////////////////// |
| 2033 // | |
| 184 | 2034 #ifndef CROSS_COMPILE |
| 2035 void main() {} | |
| 2036 #endif |