Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 329:1adcfb4b4c27
V1.90 stable RC
| author | heinrichsweikamp |
|---|---|
| date | Mon, 09 May 2011 08:12:12 +0200 |
| parents | a7ed48daf597 |
| children | 4ccdc72ec0e5 |
| rev | line source |
|---|---|
| 116 | 1 // ************************************************************** |
| 2 // p2_deco.c | |
| 3 // | |
| 4 // Created on: 12.05.2009 | |
| 5 // Author: chsw | |
| 6 // | |
| 7 // ************************************************************** | |
| 8 | |
| 9 ////////////////////////////////////////////////////////////////////////////// | |
| 10 // OSTC - diving computer code | |
| 11 // Copyright (C) 2008 HeinrichsWeikamp GbR | |
| 12 // | |
| 13 // This program is free software: you can redistribute it and/or modify | |
| 14 // it under the terms of the GNU General Public License as published by | |
| 15 // the Free Software Foundation, either version 3 of the License, or | |
| 16 // (at your option) any later version. | |
| 17 // | |
| 18 // This program is distributed in the hope that it will be useful, | |
| 19 // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 21 // GNU General Public License for more details. | |
| 22 // | |
| 23 // You should have received a copy of the GNU General Public License | |
| 24 // along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 25 // | |
| 26 ////////////////////////////////////////////////////////////////////////////// | |
| 27 | |
| 28 // ***************************** | |
| 29 // ** I N T R O D U C T I O N ** | |
| 30 // ***************************** | |
| 31 // | |
| 32 // OSTC | |
| 33 // | |
| 34 // code: | |
| 35 // p2_deco_main_c_v101.c | |
| 36 // part2 of the OSTC code | |
| 37 // code with constant O2 partial pressure routines | |
| 38 // under construction !! | |
| 39 // | |
| 40 // summary: | |
| 41 // decompression routines | |
| 42 // for the OSTC experimental project | |
| 43 // written by Christian Weikamp | |
| 44 // last revision __________ | |
| 45 // comments added _________ | |
| 46 // | |
| 47 // additional files: | |
| 48 // p2_tables_v100.romdata (other files) | |
| 49 // 18f4685_ostc_v100.lkr (linker script) | |
| 50 // | |
| 51 // history: | |
| 52 // 01/03/08 v100: first release candidate | |
| 53 // 03/13/08 v101: start of programming ppO2 code | |
| 54 // 03/13/25 v101a: backup of interrim version with ppO2 calculation | |
| 55 // 03/13/25 v101: open circuit gas change during deco | |
| 56 // 03/13/25 v101: CNS_fraction calculation | |
| 57 // 03/13/26 v101: optimization of tissue calc routines | |
| 58 // 07/xx/08 v102a: debug of bottom time routine | |
| 59 // 09/xx/08 v102d: Gradient Factor Model implemenation | |
| 60 // 10/10/08 v104: renamed to build v103 for v118 stable | |
| 171 | 61 // 10/14/08 v104: integration of char_I_depth_last_deco for Gradient Model |
| 116 | 62 // 03/31/09 v107: integration of FONT Incon24 |
| 63 // 05/23/10 v109: 5 gas changes & 1 min timer | |
| 64 // 07/13/10 v110: cns vault added | |
| 65 // 12/25/10 v110: split in three files (deco.c, main.c, definitions.h) | |
| 163 | 66 // 2011/01/20: [jDG] Create a common file included in ASM and C code. |
| 167 | 67 // 2011/01/23: [jDG] Added read_custom_function(). |
| 203 | 68 // 2011/01/24: [jDG] Make ascenttime an short. No more overflow! |
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69 // 2011/01/25: [jDG] Fusion deco array for both models. |
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70 // 2011/01/25: [jDG] Use CF(54) to reverse deco order. |
| 193 | 71 // 2011/02/11: [jDG] Reworked gradient-factor implementation. |
| 197 | 72 // 2011/02/13: [jDG] CF55 for additional gas switch delay in decoplan. |
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73 // 2011/02/15: [jDG] Fixed inconsistencies introduced by gas switch delays. |
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74 // 2011/03/21: [jDG] Added gas consumption (CF56 & CF57) evaluation for OCR mode. |
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75 // 2011/04/10: [jDG] Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco(). |
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76 // 2011/04/15: [jDG] Store low_depth in 32bits (w/o rounding), for a better stability. |
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77 // 2011/04/25: [jDG] Added 1mn mode for CNS calculation, to allow it for decoplanning. |
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78 // 2011/04/27: [jDG] Fixed char_O_gradient_factor calculation when model uses gradient-factor. |
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79 // 2011/05/02: [jDG] Added @+5min variant. |
| 116 | 80 // |
| 167 | 81 // TODO: |
| 82 // + Allow to abort MD2 calculation (have to restart next time). | |
| 83 // | |
| 84 // Literature: | |
| 200 | 85 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
| 116 | 86 // 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 |
| 87 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
| 88 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
| 89 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
| 90 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
| 167 | 91 // |
| 92 // | |
| 116 | 93 |
| 94 // ********************* | |
| 95 // ** I N C L U D E S ** | |
| 96 // ********************* | |
| 97 #include <math.h> | |
| 167 | 98 |
| 192 | 99 // *********************************************** |
| 100 // ** V A R I A B L E S D E F I N I T I O N S ** | |
| 101 // *********************************************** | |
| 102 | |
| 103 #include "p2_definitions.h" | |
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104 #define TEST_MAIN |
| 192 | 105 #include "shared_definitions.h" |
| 106 | |
| 200 | 107 // Water vapour partial pressure in the lumb. |
| 317 | 108 #define ppWater 0.0627 |
| 109 #define METER_TO_BAR 0.09985 | |
| 110 #define BAR_TO_METER 10.0150 // (1.0/METER_TO_BAR) | |
| 200 | 111 |
| 167 | 112 // ************************* |
| 113 // ** P R O T O T Y P E S ** | |
| 114 // ************************* | |
| 115 | |
| 116 static void calc_hauptroutine(void); | |
| 117 static void calc_nullzeit(void); | |
| 118 | |
| 192 | 119 static void calc_tissue(PARAMETER unsigned char period); |
| 258 | 120 static void calc_limit(void); |
| 192 | 121 |
| 167 | 122 static void clear_tissue(void); |
| 123 static void calc_ascenttime(void); | |
| 124 static void update_startvalues(void); | |
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125 static void clear_deco_table(void); |
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126 static void update_deco_table(void); |
| 192 | 127 |
| 128 static void backup_sim_pres_tissue(void); | |
| 129 static void restore_sim_pres_tissue(void); | |
| 130 static void sim_tissue(PARAMETER unsigned char period); | |
| 131 static void sim_limit(PARAMETER float GF_current); | |
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132 static void sim_extra_time(void); |
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133 |
| 167 | 134 static void calc_gradient_factor(void); |
| 135 static void calc_wo_deco_step_1_min(void); | |
| 136 | |
| 137 static void calc_hauptroutine_data_input(void); | |
| 138 static void calc_hauptroutine_update_tissues(void); | |
| 139 static void calc_hauptroutine_calc_deco(void); | |
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140 static void sim_ascent_to_first_stop(void); |
| 167 | 141 |
| 241 | 142 static unsigned char gas_switch_deepest(void); |
| 143 static void gas_switch_set(void); | |
| 217 | 144 |
| 241 | 145 static unsigned char calc_nextdecodepth(void); |
| 116 | 146 |
| 200 | 147 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 148 #pragma udata bank4=0x400 |
| 116 | 149 |
| 150 static float temp_limit; | |
| 151 static float GF_low; | |
| 152 static float GF_high; | |
| 153 static float GF_delta; | |
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154 static float low_depth; // Depth of deepest stop |
| 192 | 155 static float locked_GF_step; // GF_delta / low_depth |
| 156 | |
| 157 static unsigned char temp_depth_limit; | |
| 171 | 158 |
| 192 | 159 // Simulation context: used to predict ascent. |
| 160 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 161 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 162 |
| 192 | 163 // Real context: what we are doing now. |
| 164 static float calc_lead_tissue_limit; // | |
| 116 | 165 |
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166 static unsigned char internal_deco_time[32]; |
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167 static unsigned char internal_deco_depth[32]; |
| 116 | 168 |
| 169 static float cns_vault; | |
| 170 static float pres_tissue_vault[32]; | |
| 171 | |
| 163 | 172 //---- Bank 5 parameters ----------------------------------------------------- |
| 173 #pragma udata bank5=0x500 | |
| 174 | |
| 167 | 175 static unsigned char ci; |
| 116 | 176 static float pres_respiration; |
| 177 static float pres_surface; | |
| 178 static float temp_deco; | |
| 236 | 179 static float ppN2; |
| 200 | 180 static float ppHe; |
| 116 | 181 static float temp_tissue; |
| 200 | 182 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 183 static float He_ratio; // Breathed gas helium ratio. | |
| 184 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 185 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 186 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 187 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 188 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 189 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 190 |
| 164 | 191 static float pres_diluent; // new in v.101 |
| 192 static float const_ppO2; // new in v.101 | |
| 116 | 193 |
| 241 | 194 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
| 195 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
| 203 | 196 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
| 197 static unsigned short sim_dive_mins; // Simulated dive time. | |
| 200 | 198 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
| 199 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
| 200 static float CNS_fraction; // new in v.101 | |
| 201 static float float_saturation_multiplier; // new in v.101 | |
| 202 static float float_desaturation_multiplier; // new in v.101 | |
| 167 | 203 static float float_deco_distance; // new in v.101 |
| 204 static char flag_in_divemode; // new in v.108 | |
| 205 | |
| 225 | 206 static unsigned char deco_gas_change[5]; // new in v.109 |
| 167 | 207 |
| 163 | 208 //---- Bank 6 parameters ----------------------------------------------------- |
| 209 #pragma udata bank6=0x600 | |
| 116 | 210 |
| 197 | 211 float pres_tissue[32]; |
| 116 | 212 |
| 163 | 213 //---- Bank 7 parameters ----------------------------------------------------- |
| 214 #pragma udata bank7=0x700 | |
| 215 | |
| 197 | 216 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
| 116 | 217 static float sim_pres_tissue_backup[32]; |
| 218 | |
| 163 | 219 //---- Bank 8 parameters ----------------------------------------------------- |
| 116 | 220 #pragma udata bank8=0x800 |
| 163 | 221 |
| 116 | 222 static char md_pi_subst[256]; |
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223 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
| 116 | 224 |
| 163 | 225 //---- Bank 9 parameters ----------------------------------------------------- |
| 167 | 226 #pragma udata bank9=0x900 |
| 116 | 227 |
| 163 | 228 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
| 116 | 229 |
| 164 | 230 // internal, dbg: |
| 167 | 231 static unsigned char DBG_char_I_deco_model; // new in v.108. |
| 164 | 232 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
| 212 | 233 static unsigned char DBG_deco_gas_change; // new in v.108 |
| 224 | 234 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
| 235 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
| 164 | 236 static float DBG_pres_surface; // new in v.108 |
| 237 static float DBG_GF_low; // new in v.108 | |
| 238 static float DBG_GF_high; // new in v.108 | |
| 239 static float DBG_const_ppO2; // new in v.108 | |
| 240 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 241 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 242 static float DBG_float_deco_distance; // new in v.108 | |
| 243 static float DBG_N2_ratio; // new in v.108 | |
| 244 static float DBG_He_ratio; // new in v.108 | |
| 245 | |
| 167 | 246 ////////////////////////////////////////////////////////////////////////////// |
| 247 ////////////////////////////////////////////////////////////////////////////// | |
| 248 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 249 ////////////////////////////////////////////////////////////////////////////// | |
| 250 ////////////////////////////////////////////////////////////////////////////// | |
| 251 // | |
| 252 // End of PROM code is 17F00, So push tables on PROM top... | |
| 253 // | |
| 254 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 255 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 256 |
| 167 | 257 // Magic table to compute the MD2 HASH |
| 258 // | |
| 259 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 260 rom const rom unsigned short md_pi[] = |
| 116 | 261 { |
| 262 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 263 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 264 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 265 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 266 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 267 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 268 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 269 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 270 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 271 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 272 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 273 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 274 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 275 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 276 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 277 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 278 }; | |
| 279 | |
| 167 | 280 ////////////////////////////////////////////////////////////////////////////// |
| 281 ////////////////////////////////////////////////////////////////////////////// | |
| 282 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 283 ////////////////////////////////////////////////////////////////////////////// | |
| 284 ////////////////////////////////////////////////////////////////////////////// | |
| 285 // | |
| 116 | 286 // all new in v.102 |
| 287 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 288 | |
| 289 #pragma code p2_deco = 0x0C000 | |
| 290 | |
| 167 | 291 ////////////////////////////////////////////////////////////////////////////// |
| 292 // DBS - debug on start of dive | |
| 293 // | |
| 294 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 295 { |
| 167 | 296 overlay char i; // Local loop index. |
| 297 | |
| 298 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 299 int_O_DBS_bitfield = 0; |
| 300 int_O_DBS2_bitfield = 0; | |
| 301 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 302 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 303 else | |
| 304 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 305 int_O_DBG_post_bitfield = 0; | |
| 167 | 306 |
| 307 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 308 char_O_NDL_at_20mtr = 255; |
| 309 | |
| 167 | 310 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 311 DBG_N2_ratio = N2_ratio; |
| 312 DBG_He_ratio = He_ratio; | |
| 313 DBG_char_I_deco_model = char_I_deco_model; | |
| 314 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 315 DBG_pres_surface = pres_surface; | |
| 316 DBG_GF_low = GF_low; | |
| 317 DBG_GF_high = GF_high; | |
| 318 DBG_const_ppO2 = const_ppO2; | |
| 224 | 319 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 320 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 321 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 322 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 323 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 324 DBG_float_deco_distance = float_deco_distance; | |
| 325 | |
| 167 | 326 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 327 if(char_I_deco_model) |
| 328 int_O_DBS_bitfield |= DBS_mode; | |
| 329 if(const_ppO2) | |
| 330 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 331 for(i = 16; i < 32; i++) |
| 332 if(pres_tissue[i]) | |
| 116 | 333 int_O_DBS_bitfield |= DBS_HE_sat; |
| 334 if(float_saturation_multiplier < 0.99) | |
| 335 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 336 if(float_saturation_multiplier > 1.3) | |
| 337 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 338 if(GF_low < 0.19) | |
| 339 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 340 if(GF_low > 1.01) | |
| 341 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 342 if(GF_high < 0.6) | |
| 343 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 344 if(GF_high > 1.01) | |
| 345 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 346 if((N2_ratio + He_ratio) > 0.95) | |
| 347 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 348 if((N2_ratio + He_ratio) < 0.05) | |
| 349 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 350 if(float_deco_distance > 0.25) | |
| 351 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 352 if(char_I_depth_last_deco > 8) | |
| 353 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 354 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 355 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 356 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 357 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 358 if(pres_respiration > 3.0) | |
| 359 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 360 if(pres_surface - pres_respiration > 0.2) | |
| 361 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 362 if(pres_surface < 0.75) | |
| 363 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 364 if(pres_surface > 1.11) | |
| 365 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 366 if(float_desaturation_multiplier < 0.70) | |
| 367 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 368 if(float_desaturation_multiplier > 1.01) | |
| 369 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 370 if(GF_low > GF_high) | |
| 371 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 372 } | |
| 373 | |
| 167 | 374 ////////////////////////////////////////////////////////////////////////////// |
| 375 // DBG - set DBG to end_of_dive | |
| 376 // | |
| 377 static void set_dbg_end_of_dive(void) | |
| 116 | 378 { |
| 379 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 380 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 381 } | |
| 382 | |
| 167 | 383 ////////////////////////////////////////////////////////////////////////////// |
| 384 // DBG - NDL at first 20 m. hit | |
| 385 // | |
| 386 static void check_ndl(void) | |
| 116 | 387 { |
| 167 | 388 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 389 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 390 ) | |
| 116 | 391 { |
| 167 | 392 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 393 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 394 char_O_NDL_at_20mtr = 254; |
| 116 | 395 } |
| 396 } | |
| 397 | |
| 167 | 398 ////////////////////////////////////////////////////////////////////////////// |
| 399 // DBG - multi main during dive | |
| 400 // | |
| 184 | 401 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 402 { |
| 203 | 403 overlay unsigned short temp_DBS = 0; |
| 200 | 404 overlay unsigned char i; // Local loop index. |
| 167 | 405 |
| 116 | 406 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 407 temp_DBS |= DBG_c_gas; | |
| 408 if(DBG_const_ppO2 != const_ppO2) | |
| 409 temp_DBS |= DBG_c_ppO2; | |
| 167 | 410 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 411 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 412 ) | |
| 116 | 413 temp_DBS |= DBG_CdeSAT; |
| 414 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 415 temp_DBS |= DBG_C_MODE; | |
| 416 if(DBG_pres_surface != pres_surface) | |
| 417 temp_DBS |= DBG_C_SURF; | |
| 167 | 418 |
| 419 if( !DBS_HE_sat && !He_ratio) | |
| 420 for(i = 16; i < 32; i++) | |
| 421 if(pres_tissue[i]) | |
| 116 | 422 temp_DBS |= DBG_HEwoHE; |
| 167 | 423 |
| 225 | 424 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 425 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 426 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 427 temp_DBS |= DBG_C_DGAS; |
| 167 | 428 |
| 116 | 429 if(DBG_float_deco_distance != float_deco_distance) |
| 430 temp_DBS |= DBG_C_DIST; | |
| 431 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 432 temp_DBS |= DBG_C_LAST; | |
| 167 | 433 if( DBG_GF_low != GF_low |
| 434 || DBG_GF_high != GF_high ) | |
| 116 | 435 temp_DBS |= DBG_C_GF; |
| 436 if(pres_respiration > 13.0) | |
| 437 temp_DBS |= DBG_PHIGH; | |
| 438 if(pres_surface - pres_respiration > 0.2) | |
| 439 temp_DBS |= DBG_PLOW; | |
| 440 if(is_post_check) | |
| 441 int_O_DBG_post_bitfield |= temp_DBS; | |
| 442 else | |
| 443 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 444 } | |
| 445 | |
| 167 | 446 ////////////////////////////////////////////////////////////////////////////// |
| 447 // DBG - prior to calc. of dive | |
| 448 // | |
| 449 static void check_pre_dbg(void) | |
| 116 | 450 { |
| 451 check_dbg(0); | |
| 452 } | |
| 453 | |
| 167 | 454 ////////////////////////////////////////////////////////////////////////////// |
| 455 // DBG - after decocalc of dive | |
| 456 // | |
| 457 static void check_post_dbg(void) | |
| 116 | 458 { |
| 459 check_dbg(1); | |
| 460 } | |
| 461 | |
| 165 | 462 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 463 ////////////////////////////////////////////////////////////////////////////// |
| 464 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 465 ////////////////////////////////////////////////////////////////////////////// | |
| 466 ////////////////////////////////////////////////////////////////////////////// | |
| 467 | |
| 235 | 468 ////////////////////////////////////////////////////////////////////////////// |
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469 // Bump to blue-screen when an assert is wrong |
| 235 | 470 #ifdef __DEBUG |
| 471 void assert_failed(PARAMETER short int line) | |
| 472 { | |
| 473 extern void PLED_resetdebugger(void); | |
| 474 extern unsigned short temp10; | |
| 475 | |
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476 temp10 = line; // Show source line number as stack depth. |
| 235 | 477 PLED_resetdebugger(); |
| 478 } | |
| 479 #endif | |
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480 |
| 235 | 481 ////////////////////////////////////////////////////////////////////////////// |
| 482 // When calling C code from ASM context, the data stack pointer and | |
| 483 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
| 484 | |
| 485 #ifdef CROSS_COMPILE | |
| 486 # define RESET_C_STACK | |
| 487 #else | |
| 488 # ifdef __DEBUG | |
| 489 # define RESET_C_STACK fillDataStack(); | |
| 490 void fillDataStack(void) | |
| 491 { | |
| 492 _asm | |
| 493 LFSR 1,C_STACK | |
| 494 MOVLW 0xCC | |
| 495 loop: MOVWF POSTINC1,0 | |
| 496 TSTFSZ FSR1L,0 | |
| 497 BRA loop | |
| 498 | |
| 499 LFSR 1,C_STACK | |
| 500 LFSR 2,C_STACK | |
| 501 _endasm | |
| 502 } | |
| 503 # else | |
| 504 # define RESET_C_STACK \ | |
| 505 _asm \ | |
| 506 LFSR 1, C_STACK \ | |
| 507 LFSR 2, C_STACK \ | |
| 508 _endasm | |
| 509 # endif | |
| 510 #endif | |
| 511 | |
| 512 ////////////////////////////////////////////////////////////////////////////// | |
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513 // Read CF values from the C code. |
| 235 | 514 |
| 203 | 515 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 516 { |
| 184 | 517 #ifdef CROSS_COMPILE |
| 518 extern unsigned short custom_functions[]; | |
| 519 return custom_functions[cf]; | |
| 520 #else | |
| 167 | 521 extern unsigned char hi, lo; |
| 522 extern void getcustom15(); | |
| 523 _asm | |
| 524 movff cf,WREG | |
| 525 call getcustom15,0 | |
| 526 movff lo,PRODL | |
| 527 movff hi,PRODH | |
| 528 _endasm | |
| 184 | 529 #endif |
| 167 | 530 } |
| 531 | |
| 532 ////////////////////////////////////////////////////////////////////////////// | |
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533 // Fast subroutine to read RTC timer 3. |
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534 // Note: result is in 1/32 of msecs. |
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535 static unsigned short tmr3(void) |
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536 { |
| 261 | 537 #ifndef CROSS_COMPILE |
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538 _asm |
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539 movff 0xfb2,PRODL // TMR3L |
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540 movff 0xfb3,PRODH // TMR3H |
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541 _endasm // result in PRODH:PRODL. |
| 261 | 542 #else |
| 543 return 0; | |
| 544 #endif | |
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545 } |
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546 |
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547 ////////////////////////////////////////////////////////////////////////////// |
| 258 | 548 // read buhlmann tables A and B for compatriment ci |
| 549 // | |
| 550 static void read_buhlmann_coefficients(void) | |
| 165 | 551 { |
| 184 | 552 #ifndef CROSS_COMPILE |
| 167 | 553 // Note: we don't use far rom pointer, because the |
| 554 // 24 bits is to complex, hence we have to set | |
| 555 // the UPPER page ourself... | |
| 556 // --> Set zero if tables are moved to lower pages ! | |
| 557 _asm | |
| 558 movlw 1 | |
| 559 movwf TBLPTRU,0 | |
| 560 _endasm | |
| 184 | 561 #endif |
| 258 | 562 |
| 197 | 563 assert( 0 <= ci && ci < 16 ); |
| 165 | 564 var_N2_a = buhlmann_a[ci]; |
| 565 var_N2_b = buhlmann_b[ci]; | |
| 167 | 566 var_He_a = (buhlmann_a+16)[ci]; |
| 567 var_He_b = (buhlmann_b+16)[ci]; | |
| 568 | |
| 165 | 569 // Check reading consistency: |
| 570 if( (var_N2_a < 0.231) | |
| 571 || (var_N2_a > 1.27) | |
| 572 || (var_N2_b < 0.504) | |
| 573 || (var_N2_b > 0.966) | |
| 574 || (var_He_a < 0.510) | |
| 575 || (var_He_a > 1.75) | |
| 576 || (var_He_b < 0.423) | |
| 577 || (var_He_b > 0.927) | |
| 578 ) | |
| 258 | 579 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; |
| 580 } | |
| 581 | |
| 582 ////////////////////////////////////////////////////////////////////////////// | |
| 583 // read buhlmann tables for compatriment ci | |
| 584 // If period == 0 : 2sec interval | |
| 585 // 1 : 1 min interval | |
| 586 // 2 : 10 min interval. | |
| 587 static void read_buhlmann_times(PARAMETER char period) | |
| 588 { | |
| 589 #ifndef CROSS_COMPILE | |
| 590 // Note: we don't use far rom pointer, because the | |
| 591 // 24 bits is to complex, hence we have to set | |
| 592 // the UPPER page ourself... | |
| 593 // --> Set zero if tables are moved to lower pages ! | |
| 594 _asm | |
| 595 movlw 1 | |
| 596 movwf TBLPTRU,0 | |
| 597 _endasm | |
| 598 #endif | |
| 599 assert( 0 <= ci && ci < 16 ); | |
| 600 | |
| 165 | 601 // Integration intervals. |
| 167 | 602 switch(period) |
| 165 | 603 { |
| 604 case 0: //---- 2 sec ----------------------------------------------------- | |
| 605 var_N2_e = e2secs[ci]; | |
| 167 | 606 var_He_e = (e2secs+16)[ci]; |
| 165 | 607 |
| 608 // Check reading consistency: | |
| 609 if( (var_N2_e < 0.0000363) | |
| 610 || (var_N2_e > 0.00577) | |
| 611 || (var_He_e < 0.0000961) | |
| 612 || (var_He_e > 0.150) | |
| 613 ) | |
| 614 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 615 | |
| 616 break; | |
| 617 | |
| 618 case 1: //---- 1 min ----------------------------------------------------- | |
| 619 var_N2_e = e1min[ci]; | |
| 167 | 620 var_He_e = (e1min+16)[ci]; |
| 165 | 621 |
| 622 // Check reading consistency: | |
| 623 if( (var_N2_e < 1.09E-3) | |
| 624 || (var_N2_e > 0.1592) | |
| 625 || (var_He_e < 0.00288) | |
| 626 || (var_He_e > 0.3682) | |
| 627 ) | |
| 628 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 629 | |
| 630 break; | |
| 631 | |
| 632 case 2: //---- 10 min ---------------------------------------------------- | |
| 633 var_N2_e = e10min[ci]; | |
| 167 | 634 var_He_e = (e10min+16)[ci]; |
| 165 | 635 |
| 636 // Check reading consistency: | |
| 637 if( (var_N2_e < 0.01085) | |
| 638 || (var_N2_e > 0.82323) | |
| 639 || (var_He_e < 0.02846) | |
| 640 || (var_He_e > 0.98986) | |
| 641 ) | |
| 642 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 643 | |
| 644 break; | |
| 197 | 645 |
| 646 default: | |
| 647 assert(0); // Never go there... | |
| 165 | 648 } |
| 649 } | |
| 650 | |
| 651 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 652 // calc_next_decodepth_GF |
| 165 | 653 // |
| 116 | 654 // new in v.102 |
| 165 | 655 // |
| 116 | 656 // INPUT, changing during dive: |
| 192 | 657 // low_depth |
| 167 | 658 // |
| 116 | 659 // INPUT, fixed during dive: |
| 167 | 660 // pres_surface |
| 661 // GF_delta | |
| 662 // GF_high | |
| 663 // GF_low | |
| 171 | 664 // char_I_depth_last_deco |
| 167 | 665 // float_deco_distance |
| 666 // | |
| 241 | 667 // RETURN TRUE iff a stop is needed. |
| 668 // | |
| 116 | 669 // OUTPUT |
| 171 | 670 // locked_GF_step |
| 167 | 671 // temp_depth_limt |
| 192 | 672 // low_depth |
| 167 | 673 // |
| 241 | 674 static unsigned char calc_nextdecodepth(void) |
| 167 | 675 { |
| 241 | 676 //--- Max ascent speed --------------------------------------------------- |
| 677 // Recompute leading gas limit, at current depth: | |
| 317 | 678 overlay float depth = (temp_deco - pres_surface) * BAR_TO_METER; |
| 241 | 679 |
| 680 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
| 302 | 681 overlay float min_depth = (depth > 10.0) ? (depth - 10.0) : 0.0; |
| 241 | 682 |
| 683 // Do we need to stop at current depth ? | |
| 684 overlay unsigned char need_stop = 0; | |
| 685 | |
| 686 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
| 687 | |
| 212 | 688 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 689 if (char_I_deco_model == 1) |
| 690 { | |
| 241 | 691 if( depth >= low_depth ) |
| 192 | 692 sim_limit( GF_low ); |
| 693 else | |
| 694 sim_limit( GF_high - depth * locked_GF_step ); | |
| 695 | |
| 696 // Stops are needed ? | |
| 697 if( sim_lead_tissue_limit > pres_surface ) | |
| 698 { | |
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699 // Compute tolerated depth, for the leading tissue [metre]: |
| 317 | 700 overlay float depth_tol = (sim_lead_tissue_limit - pres_surface) * BAR_TO_METER; |
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701 |
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702 // Deepest stop, in multiples of 3 metres. |
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703 overlay unsigned char first_stop = 3 * (short)(0.99999 + depth_tol * 0.33333 ); |
| 192 | 704 assert( first_stop < 128 ); |
| 171 | 705 |
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706 // Is it a new deepest needed stop ? If yes this is the reference for |
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707 // the varying gradient factor. So reset that: |
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708 if( depth_tol > min_depth && depth_tol > low_depth ) |
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709 { |
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710 // Store the deepest stop depth, as reference for GF_low. |
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711 low_depth = depth_tol; |
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712 locked_GF_step = GF_delta / low_depth; |
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713 } |
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714 |
| 264 | 715 #if defined(__DEBUG) || defined(CROSS_COMPILE) |
| 261 | 716 { |
| 717 // Extra testing code to make sure the first_stop formula | |
| 718 // and rounding provides correct depth: | |
| 317 | 719 overlay float pres_stop = first_stop * METER_TO_BAR |
| 261 | 720 + pres_surface; |
| 721 | |
| 722 // Keep GF_low until a first stop depth is found: | |
| 723 if( first_stop >= low_depth ) | |
| 724 sim_limit( GF_low ); | |
| 725 else | |
| 726 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 727 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 728 sim_limit( GF_high - first_stop * locked_GF_step ); | |
| 729 | |
| 302 | 730 // upper limit (lowest pressure tolerated), + 1mbar for rounding...: |
| 731 assert( sim_lead_tissue_limit < (pres_stop + 0.001) ); | |
| 261 | 732 } |
| 733 #endif | |
| 734 | |
| 212 | 735 // Apply correction for the shallowest stop. |
| 192 | 736 if( first_stop == 3 ) // new in v104 |
| 737 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 738 |
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739 // Because gradient factor at first_stop might be bigger than at |
| 261 | 740 // current depth, we might ascent a bit more. |
| 741 // Hence, check all stops until one is indeed higher than tolerated presure: | |
| 742 while(first_stop > 0) | |
| 192 | 743 { |
| 744 overlay unsigned char next_stop; // Next index (0..30) | |
| 745 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 746 |
| 241 | 747 // Check max speed, or reaching surface. |
| 748 if( first_stop <= min_depth ) | |
| 749 break; | |
| 750 | |
| 751 // So, there is indeed a stop needed: | |
| 752 need_stop = 1; | |
| 753 | |
| 192 | 754 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 755 next_stop = 0; | |
| 216 | 756 else if( first_stop == 6 ) |
| 757 next_stop = char_I_depth_last_deco; | |
| 192 | 758 else |
| 759 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 760 |
| 317 | 761 pres_stop = next_stop * METER_TO_BAR |
| 192 | 762 + pres_surface; |
| 763 | |
| 212 | 764 // Keep GF_low until a first stop depth is found: |
| 765 if( next_stop >= low_depth ) | |
| 766 sim_limit( GF_low ); | |
| 767 else | |
| 768 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 769 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 770 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 771 |
| 192 | 772 // upper limit (lowest pressure tolerated): |
| 773 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 774 break; | |
| 775 | |
| 776 // Else, validate that stop and loop... | |
| 777 first_stop = next_stop; | |
| 212 | 778 } |
| 779 | |
| 780 // next stop is the last validated depth found, aka first_stop | |
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781 temp_depth_limit = first_stop; // Stop depth, in metre. |
| 192 | 782 } |
| 171 | 783 else |
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784 temp_depth_limit = 0; // stop depth, in metre. |
| 116 | 785 } |
| 167 | 786 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 787 { |
| 192 | 788 overlay float pres_gradient; |
| 789 | |
| 790 // Original model | |
| 116 | 791 // optimized in v.101 |
| 171 | 792 // char_I_depth_last_deco included in v.101 |
| 116 | 793 |
| 192 | 794 // Compute sim_lead_tissue_limit too, but just once. |
| 795 sim_limit(1.0); | |
| 796 | |
| 797 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 798 if (pres_gradient >= 0) |
| 116 | 799 { |
| 317 | 800 pres_gradient *= BAR_TO_METER/3; // Bar --> stop number; |
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801 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
| 241 | 802 need_stop = 1; // Hit. |
| 803 | |
| 804 // Implement last stop at 4m/5m/6m... | |
| 805 if( temp_depth_limit == 3 ) | |
| 806 temp_depth_limit = char_I_depth_last_deco; | |
| 171 | 807 } |
| 116 | 808 else |
| 241 | 809 temp_depth_limit = 0; |
| 171 | 810 } |
| 212 | 811 |
| 217 | 812 //---- Check gas change -------------------------------------------------- |
| 241 | 813 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
| 814 | |
| 815 return need_stop; | |
| 167 | 816 } |
| 116 | 817 |
| 167 | 818 ////////////////////////////////////////////////////////////////////////////// |
|
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819 // copy_deco_table |
| 167 | 820 // |
|
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821 // Buffer the stops, once computed, so we can continue to display them |
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822 // while computing the next set. |
| 167 | 823 // |
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824 static void copy_deco_table(void) |
| 116 | 825 { |
|
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826 // Copy depth of the first (deepest) stop, because when reversing |
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827 // order, it will be hard to find... |
|
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828 char_O_first_deco_depth = internal_deco_depth[0] & 0x7F; |
|
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829 char_O_first_deco_time = internal_deco_time [0]; |
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830 |
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831 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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832 { |
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833 overlay unsigned char x, y; |
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834 |
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835 //---- First: search the first non-null depth |
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836 for(x=31; x != 0; --x) |
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837 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 838 |
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839 //---- Second: copy to output table (in reverse order) |
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840 for(y=0; y<32; y++, --x) |
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841 { |
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842 char_O_deco_depth[y] = internal_deco_depth[x]; |
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843 char_O_deco_time [y] = internal_deco_time [x]; |
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844 |
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845 // Stop only once the last transfer is done. |
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846 if( x == 0 ) break; |
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847 } |
| 116 | 848 |
|
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849 //---- Third: fill table end with null |
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850 for(y++; y<32; y++) |
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851 { |
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852 char_O_deco_time [y] = 0; |
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853 char_O_deco_depth[y] = 0; |
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854 } |
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855 } |
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856 else //---- Straight copy ------------------------------------------------ |
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857 { |
| 167 | 858 overlay unsigned char x; |
| 859 | |
|
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860 for(x=0; x<32; x++) |
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861 { |
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862 char_O_deco_depth[x] = internal_deco_depth[x]; |
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863 char_O_deco_time [x] = internal_deco_time [x]; |
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864 } |
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865 } |
| 167 | 866 } |
| 116 | 867 |
| 167 | 868 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 869 // temp_tissue_safety // |
| 167 | 870 // |
| 116 | 871 // outsourced in v.102 |
| 167 | 872 // |
| 873 // Apply safety factors for brand ZH-L16 model. | |
| 874 // | |
| 875 static void temp_tissue_safety(void) | |
| 116 | 876 { |
| 197 | 877 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 878 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 879 | |
| 167 | 880 if( char_I_deco_model == 0 ) |
| 116 | 881 { |
| 882 if (temp_tissue < 0.0) | |
| 126 | 883 temp_tissue *= float_desaturation_multiplier; |
| 116 | 884 else |
| 126 | 885 temp_tissue *= float_saturation_multiplier; |
| 116 | 886 } |
| 167 | 887 } |
| 116 | 888 |
| 167 | 889 ////////////////////////////////////////////////////////////////////////////// |
| 890 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 891 // ** THE JUMP-IN CODE ** |
| 892 // ** for the asm code ** | |
| 167 | 893 ////////////////////////////////////////////////////////////////////////////// |
| 894 ////////////////////////////////////////////////////////////////////////////// | |
|
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895 |
| 167 | 896 ////////////////////////////////////////////////////////////////////////////// |
|
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897 // Called every 2 seconds during diving. |
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898 // update tissues every time. |
| 184 | 899 // |
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900 // Every 6 seconds (or slower when TTS > 16): |
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901 // - update deco table (char_O_deco_time/depth) with new values. |
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902 // - update ascent time, |
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903 // - set status to zero (so we can check there is new results). |
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904 // |
| 116 | 905 void deco_calc_hauptroutine(void) |
| 906 { | |
|
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907 RESET_C_STACK |
| 116 | 908 calc_hauptroutine(); |
| 909 int_O_desaturation_time = 65535; | |
| 910 } | |
| 911 | |
| 167 | 912 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 913 // Reset decompression model: |
| 914 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 915 // + Reset last stop to 0m | |
| 916 // + Reset all model output. | |
| 116 | 917 void deco_clear_tissue(void) |
| 918 { | |
|
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919 RESET_C_STACK |
| 116 | 920 clear_tissue(); |
| 921 } | |
| 922 | |
| 167 | 923 ////////////////////////////////////////////////////////////////////////////// |
| 278 | 924 // Called every 1 min during decoplanning. |
| 925 // Update tissues for 1 min. | |
| 926 // | |
| 927 void deco_calc_tissue(void) | |
| 928 { | |
| 929 RESET_C_STACK | |
| 930 calc_hauptroutine_update_tissues(); | |
| 931 } | |
| 932 | |
| 933 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 934 |
| 116 | 935 void deco_calc_wo_deco_step_1_min(void) |
| 936 { | |
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937 RESET_C_STACK |
| 116 | 938 calc_wo_deco_step_1_min(); |
| 939 deco_calc_desaturation_time(); | |
| 940 } | |
| 941 | |
| 167 | 942 ////////////////////////////////////////////////////////////////////////////// |
| 943 | |
| 116 | 944 void deco_debug(void) |
| 945 { | |
|
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946 RESET_C_STACK |
| 116 | 947 } |
| 948 | |
| 241 | 949 |
| 950 ////////////////////////////////////////////////////////////////////////////// | |
| 951 // Find current gas in the list (if any). | |
| 952 // | |
| 953 // Input: char_I_deco_N2_ratio[] and He, to detect breathed gas. | |
| 954 // | |
| 955 // Output: sim_gas_depth_used | |
| 956 // | |
| 957 static void gas_switch_find_current(void) | |
| 958 { | |
|
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959 overlay unsigned char j; |
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960 overlay unsigned char N2 = (unsigned char)(N2_ratio * 100 + 0.5); |
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961 overlay unsigned char He = (unsigned char)(He_ratio * 100 + 0.5); |
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962 |
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963 for(j=0; j<5; ++j) |
| 241 | 964 { |
|
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965 // Make sure to detect if we are already breathing some gas in |
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966 // the current list (happends when first gas do have a depth). |
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967 if( N2 == char_I_deco_N2_ratio[j] |
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968 && He == char_I_deco_He_ratio[j] |
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969 ) |
|
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970 { |
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971 if( char_I_deco_gas_change[j] ) |
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972 temp_depth_limit = sim_gas_last_depth = char_I_deco_gas_change[j]; |
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973 sim_gas_last_used = j+1; |
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974 break; |
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975 } |
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976 } |
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977 |
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978 // If there is no gas-switch-delay running ? |
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979 if( sim_gas_delay <= sim_dive_mins) |
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980 { |
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981 // Compute current depth: |
| 317 | 982 overlay unsigned char depth = (unsigned char)((pres_respiration - pres_surface) * BAR_TO_METER); |
|
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983 assert( depth < 130 ); |
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984 |
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985 // And if I'm above the last decostop (with the 3m margin) ? |
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986 if( (sim_gas_last_depth-3) > depth ) |
| 241 | 987 { |
|
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988 for(j=0; j<5; ++j) |
| 241 | 989 { |
|
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990 // And If I am in the range of a valide stop ? |
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991 // (again, with the same 3m margin) |
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992 if( char_I_deco_gas_change[j] |
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993 && depth <= char_I_deco_gas_change[j] |
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994 && depth >= (char_I_deco_gas_change[j] - 3) |
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995 ) |
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996 { |
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997 // Then start gas-switch timer there, |
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998 sim_gas_delay = sim_dive_mins |
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999 + read_custom_function(55); |
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1000 |
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1001 // And make sure decostop will be recorded at the right depth. |
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1002 temp_depth_limit = char_I_deco_gas_change[j]; |
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1003 break; |
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1004 } |
| 241 | 1005 } |
| 1006 } | |
|
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1007 else |
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1008 // Make clear there is no deay anymore. |
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1009 sim_gas_delay = 0; |
| 241 | 1010 } |
| 1011 } | |
| 1012 | |
| 167 | 1013 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 1014 // Find deepest available gas. |
| 201 | 1015 // |
| 241 | 1016 // Input: temp_depth_limit, |
| 1017 // deco_gas_change[] | |
| 1018 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
| 212 | 1019 // |
| 241 | 1020 // RETURNS TRUE if a stop is needed for gas switch. |
| 1021 // | |
| 1022 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
| 212 | 1023 // |
| 241 | 1024 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
| 1025 // are null), or during the ascent to make sure we are not passing a | |
| 1026 // stop (in which case both can be already set). | |
| 1027 // | |
| 1028 static unsigned char gas_switch_deepest(void) | |
| 201 | 1029 { |
| 241 | 1030 overlay unsigned char switch_deco = 0, switch_last = 0; |
| 201 | 1031 |
| 1032 if (char_I_const_ppO2 == 0) | |
| 1033 { | |
| 225 | 1034 overlay unsigned char j; |
| 1035 | |
| 241 | 1036 // Loop over all enabled gas, to find the deepest one, |
| 1037 // above las gas, but below temp_depth_limit. | |
| 1038 for(j=0; j<5; ++j) | |
| 225 | 1039 { |
| 241 | 1040 // Gas not (yet) allowed ? Skip ! |
| 1041 if( temp_depth_limit > deco_gas_change[j] ) | |
| 1042 continue; | |
| 1043 | |
| 1044 // Gas deeper than the current/previous one ? Skip ! | |
| 1045 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) | |
| 1046 continue; | |
| 1047 | |
| 1048 // First, or deeper ? | |
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1049 if( switch_deco < deco_gas_change[j] ) |
| 241 | 1050 { |
| 1051 switch_deco = deco_gas_change[j]; | |
| 1052 switch_last = j+1; | |
| 1053 } | |
| 225 | 1054 } |
| 201 | 1055 } |
| 1056 | |
| 203 | 1057 // If there is a better gas available |
| 241 | 1058 if( switch_deco ) |
| 201 | 1059 { |
| 241 | 1060 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
| 201 | 1061 |
| 241 | 1062 // Should restart gas-switch delay only when gas do changes... |
| 1063 assert( sim_gas_delay <= sim_dive_mins ); | |
| 217 | 1064 |
| 241 | 1065 sim_gas_last_depth = switch_deco; |
| 1066 sim_gas_last_used = switch_last; | |
| 1067 sim_gas_delay = read_custom_function(55); | |
| 217 | 1068 |
| 241 | 1069 // Apply depth correction ONLY if CF#55 is not null: |
| 1070 if( sim_gas_delay > 0 ) | |
| 225 | 1071 { |
| 241 | 1072 sim_gas_delay += sim_dive_mins; |
| 1073 temp_depth_limit = switch_deco; | |
| 1074 return 1; | |
| 225 | 1075 } |
| 241 | 1076 |
| 1077 return 0; | |
| 217 | 1078 } |
| 1079 | |
| 241 | 1080 sim_gas_delay = 0; |
| 1081 return 0; | |
| 217 | 1082 } |
| 1083 | |
| 1084 ////////////////////////////////////////////////////////////////////////////// | |
| 1085 // Calculate gas switches | |
| 1086 // | |
| 1087 // | |
| 1088 // Input: N2_ratio, He_ratio. | |
| 1089 // sim_gas_last_used | |
| 1090 // | |
| 1091 // Output: calc_N2_ratio, calc_He_ratio | |
| 1092 // | |
| 241 | 1093 static void gas_switch_set(void) |
| 217 | 1094 { |
| 224 | 1095 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
| 217 | 1096 |
| 224 | 1097 if( sim_gas_last_used == 0 ) |
| 1098 { | |
| 1099 calc_N2_ratio = N2_ratio; | |
| 1100 calc_He_ratio = He_ratio; | |
| 1101 } | |
| 1102 else | |
| 1103 { | |
| 1104 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 1105 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 1106 } |
| 201 | 1107 |
| 1108 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 1109 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1110 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1111 } | |
| 1112 | |
| 1113 ////////////////////////////////////////////////////////////////////////////// | |
| 1114 // | |
| 212 | 1115 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 1116 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 276 | 1117 // float_deco_distance : security factor. |
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1118 // Water-vapor pressure inside limbs (ppWater). |
| 212 | 1119 // |
| 236 | 1120 // Output: ppN2, ppHe. |
| 212 | 1121 // |
| 1122 static void sim_alveolar_presures(void) | |
| 201 | 1123 { |
| 212 | 1124 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1125 | |
| 276 | 1126 // Take deco offset into account, but not at surface. |
| 1127 // Note: this should be done on ambiant pressure, hence before | |
| 1128 // computing the diluant partial pressure... | |
| 1129 if( deco_diluent > pres_surface ) | |
| 1130 deco_diluent += float_deco_distance; | |
| 1131 | |
| 212 | 1132 //---- CCR mode : deco gas switch ? -------------------------------------- |
| 276 | 1133 if( char_I_const_ppO2 != 0 ) |
| 201 | 1134 { |
| 276 | 1135 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
| 1136 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
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1137 // ppWater in the equations below: |
| 321 | 1138 deco_diluent -= const_ppO2; |
| 276 | 1139 deco_diluent /= calc_N2_ratio + calc_He_ratio; |
| 212 | 1140 |
| 1141 if (deco_diluent > temp_deco) | |
| 1142 deco_diluent = temp_deco; | |
| 201 | 1143 } |
| 1144 | |
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1145 if( deco_diluent > ppWater ) |
| 201 | 1146 { |
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1147 ppN2 = calc_N2_ratio * (deco_diluent - ppWater); |
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1148 ppHe = calc_He_ratio * (deco_diluent - ppWater); |
| 201 | 1149 } |
| 1150 else | |
| 1151 { | |
| 236 | 1152 ppN2 = 0.0; |
| 201 | 1153 ppHe = 0.0; |
| 1154 } | |
| 236 | 1155 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 1156 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 1157 } | |
| 1158 | |
| 1159 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1160 // clear_tissue |
| 1161 // | |
| 165 | 1162 // optimized in v.101 (var_N2_a) |
| 167 | 1163 // |
| 1164 // preload tissues with standard pressure for the given ambient pressure. | |
| 1165 // Note: fixed N2_ratio for standard air. | |
| 201 | 1166 // |
| 167 | 1167 static void clear_tissue(void) |
| 116 | 1168 { |
| 1169 flag_in_divemode = 0; | |
| 1170 int_O_DBS_bitfield = 0; | |
| 1171 int_O_DBS2_bitfield = 0; | |
| 1172 int_O_DBG_pre_bitfield = 0; | |
| 1173 int_O_DBG_post_bitfield = 0; | |
| 1174 char_O_NDL_at_20mtr = 255; | |
| 1175 | |
| 167 | 1176 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1177 N2_ratio = 0.7902; | |
| 212 | 1178 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1179 |
| 167 | 1180 for(ci=0; ci<16; ci++) |
| 126 | 1181 { |
| 197 | 1182 // cycle through the 16 Bühlmann tissues |
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1183 overlay float p = N2_ratio * (pres_respiration - ppWater); |
| 164 | 1184 pres_tissue[ci] = p; |
| 197 | 1185 |
| 1186 // cycle through the 16 Bühlmann tissues for Helium | |
| 167 | 1187 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1188 } // for 0 to 16 |
| 116 | 1189 |
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1190 clear_deco_table(); |
| 126 | 1191 char_O_deco_status = 0; |
| 1192 char_O_nullzeit = 0; | |
| 168 | 1193 int_O_ascenttime = 0; |
| 126 | 1194 char_O_gradient_factor = 0; |
| 1195 char_O_relative_gradient_GF = 0; | |
| 197 | 1196 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 258 | 1197 |
| 1198 calc_lead_tissue_limit = 0.0; | |
| 1199 char_O_gtissue_no = 0; | |
| 167 | 1200 } |
| 116 | 1201 |
| 167 | 1202 ////////////////////////////////////////////////////////////////////////////// |
| 1203 // calc_hauptroutine | |
| 1204 // | |
| 1205 // this is the major code in dive mode calculates: | |
| 116 | 1206 // the tissues, |
| 167 | 1207 // the bottom time, |
| 1208 // and simulates the ascend with all deco stops. | |
| 171 | 1209 // |
| 1210 // The deco_state sequence is : | |
| 1211 // 3 (at surface) | |
| 1212 // +---> 0 : calc nullzeit | |
| 1213 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1214 // | +-> 1 : simulate up to 16min of stops. | |
| 1215 // | +------< not finished | |
| 1216 // +--------< finish | |
| 1217 // | |
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1218 // Added steps 6,5 for @+5 calculation: |
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1219 // 6 = ascent to first stop (same as 2), except continue to 7 |
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1220 // 7 = same as 1, except loop to 7. |
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1221 // |
| 167 | 1222 static void calc_hauptroutine(void) |
| 116 | 1223 { |
| 241 | 1224 static unsigned char backup_gas_used = 0; |
| 1225 static unsigned char backup_gas_depth = 0; | |
| 217 | 1226 static unsigned char backup_gas_delay = 0; |
| 186 | 1227 |
| 116 | 1228 calc_hauptroutine_data_input(); |
| 1229 | |
| 1230 if(!flag_in_divemode) | |
| 1231 { | |
| 1232 flag_in_divemode = 1; | |
| 1233 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1234 } | |
| 1235 else | |
| 1236 check_pre_dbg(); | |
| 1237 | |
| 1238 calc_hauptroutine_update_tissues(); | |
| 1239 calc_gradient_factor(); | |
| 1240 | |
| 167 | 1241 // toggle between calculation for nullzeit (bottom time), |
| 1242 // deco stops | |
| 1243 // and more deco stops (continue) | |
| 1244 switch( char_O_deco_status ) | |
| 116 | 1245 { |
| 186 | 1246 case 3: //---- At surface: start a new dive ------------------------------ |
| 1247 clear_deco_table(); | |
| 1248 copy_deco_table(); | |
| 200 | 1249 int_O_ascenttime = 0; // Reset DTR. |
| 323 | 1250 int_O_extra_ascenttime = 0; |
| 200 | 1251 char_O_nullzeit = 0; // Reset bottom time. |
| 278 | 1252 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
| 201 | 1253 |
| 217 | 1254 // Values that should be reset just once for the full real dive. |
| 1255 // This is used to record the lowest stop for the whole dive, | |
| 1256 // Including ACCROSS all simulated ascent. | |
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1257 low_depth = 0.0; |
| 217 | 1258 |
| 1259 // Reset gas switch history. | |
| 241 | 1260 backup_gas_used = sim_gas_last_used = 0; |
| 1261 backup_gas_depth = sim_gas_last_depth = 0; | |
| 217 | 1262 backup_gas_delay = sim_gas_delay = 0; |
| 203 | 1263 sim_dive_mins = 0; |
| 1264 break; | |
| 186 | 1265 |
| 167 | 1266 case 0: //---- bottom time ----------------------------------------------- |
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1267 default: |
| 167 | 1268 calc_nullzeit(); |
| 1269 check_ndl(); | |
| 186 | 1270 char_O_deco_status = 2; // calc ascent next time. |
| 1271 break; | |
| 1272 | |
| 1273 case 2: //---- Simulate ascent to first stop ----------------------------- | |
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1274 case 6: // @+5min variation |
| 203 | 1275 // Check proposed gas at begin of ascent simulation |
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1276 sim_dive_mins = int_I_divemins; // Init current time. |
| 241 | 1277 |
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1278 gas_switch_find_current(); // Lookup for current gas & time. |
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1279 gas_switch_set(); // setup calc_ratio's |
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1280 |
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1281 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1282 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
| 203 | 1283 backup_gas_delay = sim_gas_delay; |
| 186 | 1284 |
| 1285 sim_ascent_to_first_stop(); | |
| 201 | 1286 |
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1287 // Calc stops next time (deco or gas switch). |
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1288 char_O_deco_status = 1 | ( char_O_deco_status & 4 ); |
| 167 | 1289 break; |
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1290 |
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1291 case 1: //---- Simulate stops -------------------------------------------- |
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1292 case 5: // @+5 variation. |
| 167 | 1293 calc_hauptroutine_calc_deco(); |
| 186 | 1294 |
| 1295 // If simulation is finished, restore the GF low reference, so that | |
| 1296 // next ascent simulation is done from the current depth: | |
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1297 if( (char_O_deco_status & 3) == 0 ) |
| 186 | 1298 { |
| 241 | 1299 sim_gas_last_used = backup_gas_used; |
| 1300 sim_gas_last_depth = backup_gas_depth; | |
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1301 sim_gas_delay = backup_gas_delay; |
| 186 | 1302 } |
| 167 | 1303 break; |
| 116 | 1304 } |
| 167 | 1305 |
| 116 | 1306 check_post_dbg(); |
| 1307 } | |
| 1308 | |
| 167 | 1309 ////////////////////////////////////////////////////////////////////////////// |
| 1310 // calc_hauptroutine_data_input | |
| 1311 // | |
| 1312 // Reset all C-code dive parameters from their ASM-code values. | |
| 1313 // Detect gas change condition. | |
| 1314 // | |
| 116 | 1315 void calc_hauptroutine_data_input(void) |
| 1316 { | |
| 203 | 1317 overlay short int_temp; |
| 126 | 1318 |
| 197 | 1319 pres_respiration = int_I_pres_respiration * 0.001; |
| 1320 pres_surface = int_I_pres_surface * 0.001; | |
| 1321 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1322 He_ratio = char_I_He_ratio * 0.01; | |
| 1323 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1324 |
| 126 | 1325 // ____________________________________________________ |
| 1326 // | |
| 1327 // _____________ G A S _ C H A N G E S ________________ | |
| 1328 // ____________________________________________________ | |
| 1329 | |
| 212 | 1330 // Keep a margin of 150mbar = 1.50m |
| 1331 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1332 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1333 |
| 225 | 1334 deco_gas_change[0] = 0; |
| 1335 deco_gas_change[1] = 0; | |
| 1336 deco_gas_change[2] = 0; | |
| 1337 deco_gas_change[3] = 0; | |
| 1338 deco_gas_change[4] = 0; | |
| 116 | 1339 |
| 203 | 1340 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1341 if(char_I_deco_gas_change[0]) |
| 126 | 1342 { |
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1343 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1344 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1345 } |
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1346 if(char_I_deco_gas_change[1]) |
| 126 | 1347 { |
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1348 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1349 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1350 } |
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1351 if(char_I_deco_gas_change[2]) |
| 126 | 1352 { |
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1353 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1354 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1355 } |
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1356 if(char_I_deco_gas_change[3]) |
| 126 | 1357 { |
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1358 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1359 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1360 } |
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1361 if(char_I_deco_gas_change[4]) |
| 126 | 1362 { |
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1363 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1364 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1365 } |
| 116 | 1366 |
| 197 | 1367 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 1368 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1369 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1370 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1371 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1372 GF_delta = GF_high - GF_low; |
| 116 | 1373 } |
| 1374 | |
| 167 | 1375 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1376 // |
| 1377 // | |
| 116 | 1378 void calc_hauptroutine_update_tissues(void) |
| 1379 { | |
| 197 | 1380 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1381 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1382 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1383 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1384 |
| 276 | 1385 pres_diluent = pres_respiration; |
| 307 | 1386 if( char_I_const_ppO2 != 0 ) // new in v.101 |
| 186 | 1387 { |
| 322 | 1388 overlay float flush_ppO2 = pres_respiration * (1.0 - N2_ratio - He_ratio); |
| 1389 | |
| 276 | 1390 pres_diluent -= const_ppO2; // new in v.101 |
| 1391 pres_diluent /= N2_ratio + He_ratio; // new in v.101 | |
| 321 | 1392 if( pres_diluent < 0.0 ) |
| 1393 pres_diluent = 0.0; | |
| 276 | 1394 if( pres_diluent > pres_respiration ) // new in v.101 |
| 1395 pres_diluent = pres_respiration; // new in v.101 | |
| 307 | 1396 |
| 321 | 1397 char_O_diluent = (unsigned char)(pres_diluent/pres_respiration*100.0 + 0.5); |
| 322 | 1398 |
| 326 | 1399 if( flush_ppO2 > 2.545) flush_ppO2 = 2.55; |
| 322 | 1400 if( flush_ppO2 < 0.0 ) flush_ppO2 = 0.0; |
| 1401 char_O_flush_ppO2 = (unsigned char)(flush_ppO2*100.0 + 0.5); | |
| 186 | 1402 } |
| 307 | 1403 |
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1404 if( pres_diluent > ppWater ) // new in v.101 |
| 116 | 1405 { |
| 307 | 1406 overlay float EAD, END; |
| 1407 | |
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1408 ppN2 = N2_ratio * (pres_diluent - ppWater); // changed in v.101 |
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1409 ppHe = He_ratio * (pres_diluent - ppWater); // changed in v.101 |
| 307 | 1410 |
| 1411 // EAD : Equivalent Air Dive. Equivalent depth for the same N2 level | |
| 1412 // with plain air. | |
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1413 // ppN2 = 79% * (P_EAD - ppWater) |
| 307 | 1414 // EAD = (P_EAD - Psurface) * 10 |
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1415 // ie: EAD = (ppN2 / 0.7902 + ppWater -Psurface) * 10 |
| 317 | 1416 EAD = (ppN2 / 0.7902 + ppWater - pres_surface) * BAR_TO_METER; |
| 307 | 1417 if( EAD < 0.0 || EAD > 245.5 ) EAD = 0.0; |
| 317 | 1418 char_O_EAD = (unsigned char)(EAD + 0.5); |
| 307 | 1419 |
| 1420 // END : Equivalent Narcotic Dive. | |
| 1421 // Here we count O2 as narcotic too. Hence everything but helium (has a narcosis factor of | |
| 1422 // 0.23 btw). Hence the formula becomes: | |
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1423 // END * BarPerMeter * (1.0 - 0.0) - ppWater + Psurface == Pambient - ppHe - ppWater |
| 317 | 1424 // ie: END = (Pambient - ppHe - Psurface) * BAR_TO_METER |
| 307 | 1425 // |
| 1426 // Source cited: | |
| 1427 // The Physiology and Medicine of Diving by Peter Bennett and David Elliott, | |
| 1428 // 4th edition, 1993, W.B.Saunders Company Ltd, London. | |
| 317 | 1429 END = (pres_respiration - ppHe - pres_surface) * BAR_TO_METER; |
| 307 | 1430 if( END < 0.0 || END > 245.5 ) END = 0.0; |
| 317 | 1431 char_O_END = (unsigned char)(END + 0.5); |
| 116 | 1432 } |
| 167 | 1433 else // new in v.101 |
| 116 | 1434 { |
| 236 | 1435 ppN2 = 0.0; // new in v.101 |
| 200 | 1436 ppHe = 0.0; // new in v.101 |
| 307 | 1437 char_O_EAD = char_O_END = 0; |
| 116 | 1438 } |
| 1439 | |
| 1440 if(!char_I_step_is_1min) | |
| 192 | 1441 calc_tissue(0); |
| 116 | 1442 else |
| 192 | 1443 calc_tissue(1); |
| 186 | 1444 |
| 192 | 1445 // Calc limit for surface, ie. GF_high. |
| 258 | 1446 calc_limit(); |
| 186 | 1447 |
| 203 | 1448 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 1449 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 192 | 1450 |
| 1451 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1452 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1453 { |
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1454 char_O_nullzeit = 0; // deco necessary |
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1455 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1456 } |
| 171 | 1457 } |
| 1458 | |
| 116 | 1459 |
| 167 | 1460 ////////////////////////////////////////////////////////////////////////////// |
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1461 // Compute stops. |
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1462 // |
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1463 // Note: because this can be very long, break on 16 iterations, and set state |
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1464 // to 0 when finished, or to 1 when needing to continue. |
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1465 // Note: because this might be very long (~ 66 ms by iteration in 1.84beta), |
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1466 // break the loop when total time > 512msec. |
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1467 // |
| 116 | 1468 void calc_hauptroutine_calc_deco(void) |
| 1469 { | |
|
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1470 overlay unsigned char loop; |
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1471 |
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1472 for(loop = 0; loop < 16; ++loop) |
| 116 | 1473 { |
|
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1474 // Limit loops to 512ms, using the RTC timer 3: |
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1475 if( tmr3() & (512*32) ) |
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1476 break; |
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1477 |
| 241 | 1478 // Do not ascent while doing a gas switch ? |
| 203 | 1479 if( sim_gas_delay <= sim_dive_mins ) |
| 1480 { | |
| 241 | 1481 if( calc_nextdecodepth() ) |
| 1482 { | |
| 1483 if( temp_depth_limit == 0 ) | |
| 1484 goto Surface; | |
| 116 | 1485 |
| 241 | 1486 //---- We hit a stop at temp_depth_limit --------------------- |
| 317 | 1487 temp_deco = temp_depth_limit * METER_TO_BAR // Convert to relative bar, |
| 241 | 1488 + pres_surface; // To absolute. |
| 1489 update_deco_table(); // Adds a one minute stops. | |
| 1490 } | |
| 1491 else | |
| 1492 { | |
| 1493 //---- No stop ----------------------------------------------- | |
| 317 | 1494 temp_deco -= (10*METER_TO_BAR); // Ascend 10m, no wait. |
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1495 |
| 241 | 1496 //---- Finish computations once surface is reached ----------- |
| 1497 if( temp_deco <= pres_surface ) | |
| 1498 { | |
| 1499 Surface: | |
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1500 if( char_O_deco_status == 1 ) // Don't in @+5min variant. |
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1501 copy_deco_table(); |
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1502 |
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1503 calc_ascenttime(); |
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1504 char_O_deco_status = 0; // calc nullzeit next time. |
| 323 | 1505 char_O_deco_last_stop = 0; // Surface reached (to animate menu) |
| 241 | 1506 return; |
| 1507 } | |
| 1508 } | |
| 212 | 1509 } |
| 1510 else | |
| 241 | 1511 update_deco_table(); // Just pass one minute. |
| 197 | 1512 |
| 241 | 1513 //---- Then update tissue -------------------------------------------- |
| 203 | 1514 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1515 gas_switch_set(); // Apply any simulated gas change, once validated. |
| 212 | 1516 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1517 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1518 } |
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1519 |
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1520 // Surface not reached, need more stops... |
| 278 | 1521 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
| 116 | 1522 } |
| 1523 | |
| 167 | 1524 ////////////////////////////////////////////////////////////////////////////// |
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1525 // Simulation ascention to first deco stop. |
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1526 // |
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1527 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1528 // there is no need to break on more that 16 iterations |
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1529 // (or we are already in deep shit). |
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1530 // |
|
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1531 // if char_O_deco_status indicate @+5 variant, add extra time at current depth, |
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1532 // before ascent. |
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1533 void sim_ascent_to_first_stop(void) |
| 116 | 1534 { |
| 171 | 1535 update_startvalues(); |
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1536 clear_deco_table(); |
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1537 |
| 200 | 1538 temp_deco = pres_respiration; // Starts from current real depth. |
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1539 |
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1540 // Are we doing the special @+5min variation ? |
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1541 if(char_O_deco_status & 4) |
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1542 sim_extra_time(); |
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1543 |
| 212 | 1544 // Do we have a gas switch going on ? |
| 1545 if( sim_gas_delay > sim_dive_mins ) | |
| 1546 return; | |
| 1547 | |
| 241 | 1548 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1549 for(;;) |
| 116 | 1550 { |
| 241 | 1551 // Try ascending 1 full minute. |
| 317 | 1552 temp_deco -= 10*METER_TO_BAR; // 1 min, at 10m/min. ~ 1bar. |
| 203 | 1553 |
| 212 | 1554 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1555 sim_limit(GF_low); | |
| 1556 | |
| 1557 // Did we reach deepest remaining stop ? | |
| 241 | 1558 if( temp_deco < sim_lead_tissue_limit ) |
| 212 | 1559 { |
| 317 | 1560 temp_deco += 10*METER_TO_BAR; // Restore last correct depth, |
| 1561 break; // End fast ascent. | |
| 212 | 1562 } |
| 1563 | |
| 203 | 1564 // Did we reach surface ? |
| 1565 if( temp_deco <= pres_surface ) | |
| 1566 { | |
| 1567 temp_deco = pres_surface; // Yes: finished ! | |
| 1568 break; | |
| 1569 } | |
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1570 |
| 241 | 1571 // Check for gas change below new depth ? |
| 317 | 1572 temp_depth_limit = (temp_deco - pres_surface) * BAR_TO_METER; |
| 241 | 1573 |
| 1574 if( gas_switch_deepest() ) | |
| 1575 { | |
| 317 | 1576 temp_deco = temp_depth_limit * METER_TO_BAR + pres_surface; |
| 212 | 1577 break; |
| 241 | 1578 } |
| 171 | 1579 |
| 203 | 1580 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1581 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
| 203 | 1582 sim_tissue(1); // and update tissues for 1 min. |
| 1583 } | |
| 167 | 1584 } |
| 116 | 1585 |
| 167 | 1586 ////////////////////////////////////////////////////////////////////////////// |
|
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1587 // Simulation extra time at the current depth. |
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1588 // |
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1589 // This routine is used for @+5min feature. |
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1590 void sim_extra_time(void) |
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1591 { |
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1592 overlay unsigned char extra = read_custom_function(58); |
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1593 do { |
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1594 sim_dive_mins++; // Advance simulated time by 1 minute. |
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1595 sim_tissue(1); // and update tissues for 1 min. |
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1596 } while( --extra != 0 ); |
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1597 } |
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1598 |
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1599 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 1600 // calc_tissue |
| 1601 // | |
| 116 | 1602 // optimized in v.101 |
| 167 | 1603 // |
| 184 | 1604 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1605 { |
| 251 | 1606 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1607 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1608 |
| 126 | 1609 for (ci=0;ci<16;ci++) |
| 1610 { | |
| 258 | 1611 read_buhlmann_times(period); // 2 sec or 1 min period. |
| 116 | 1612 |
| 126 | 1613 // N2 |
| 236 | 1614 temp_tissue = (ppN2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1615 temp_tissue_safety(); |
| 167 | 1616 pres_tissue[ci] += temp_tissue; |
| 165 | 1617 |
| 126 | 1618 // He |
| 200 | 1619 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1620 temp_tissue_safety(); |
| 167 | 1621 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1622 } |
| 167 | 1623 } |
| 116 | 1624 |
| 167 | 1625 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1626 // calc_limit |
| 167 | 1627 // |
| 192 | 1628 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1629 // |
| 258 | 1630 static void calc_limit(void) |
| 167 | 1631 { |
| 192 | 1632 char_O_gtissue_no = 255; |
| 1633 calc_lead_tissue_limit = 0.0; | |
| 1634 | |
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1635 for(ci=0; ci<16;ci++) |
| 192 | 1636 { |
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1637 overlay float N2 = pres_tissue[ci]; |
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1638 overlay float He = (pres_tissue+16)[ci]; |
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1639 overlay float p = N2 + He; |
| 192 | 1640 |
| 258 | 1641 read_buhlmann_coefficients(); |
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1642 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1643 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
| 116 | 1644 |
| 192 | 1645 // Apply the Eric Baker's varying gradient factor correction. |
| 1646 // Note: the correction factor depends both on GF and b, | |
| 1647 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1648 // so that can change who is the leading gas... | |
| 1649 // Note: Also depends of the GF. So the calcul is different for | |
| 1650 // GF_low, current GF, or GF_high... | |
| 1651 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1652 // hence what would happend at surface, | |
| 1653 // hence at GF_high. | |
| 1654 if( char_I_deco_model == 1 ) | |
| 258 | 1655 p = ( p - var_N2_a * GF_high) * var_N2_b |
| 1656 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
| 192 | 1657 else |
| 1658 p = (p - var_N2_a) * var_N2_b; | |
| 258 | 1659 if( p < 0.0 ) p = 0.0; |
| 192 | 1660 |
| 1661 if( p > calc_lead_tissue_limit ) | |
| 1662 { | |
| 1663 char_O_gtissue_no = ci; | |
| 1664 calc_lead_tissue_limit = p; | |
| 1665 } | |
| 1666 } | |
| 197 | 1667 |
| 1668 assert( char_O_gtissue_no < 16 ); | |
| 1669 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1670 } |
| 1671 | |
| 1672 ////////////////////////////////////////////////////////////////////////////// | |
| 1673 // calc_nullzeit | |
| 1674 // | |
| 1675 // calculates the remaining bottom time | |
| 1676 // | |
| 1677 // unchanged in v.101 | |
| 1678 // | |
| 1679 static void calc_nullzeit(void) | |
| 1680 { | |
| 203 | 1681 overlay unsigned char loop; |
| 200 | 1682 update_startvalues(); |
| 167 | 1683 |
| 116 | 1684 char_O_nullzeit = 0; |
| 167 | 1685 for(loop = 1; loop <= 17; loop++) |
| 116 | 1686 { |
| 1687 backup_sim_pres_tissue(); | |
| 197 | 1688 sim_tissue(2); // 10 min. |
| 192 | 1689 sim_limit(GF_high); |
| 167 | 1690 |
| 192 | 1691 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1692 { |
| 1693 restore_sim_pres_tissue(); | |
| 1694 break; | |
| 1695 } | |
| 1696 // Validate once we know its good. | |
| 1697 char_O_nullzeit += 10; | |
| 167 | 1698 } |
| 1699 | |
| 116 | 1700 if (char_O_nullzeit < 60) |
| 1701 { | |
| 167 | 1702 for(loop=1; loop <= 10; loop++) |
| 116 | 1703 { |
| 197 | 1704 sim_tissue(1); // 1 min |
| 192 | 1705 sim_limit(GF_high); |
| 1706 | |
| 1707 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1708 break; |
| 1709 char_O_nullzeit++; | |
| 167 | 1710 } |
| 185 | 1711 } |
| 1712 } | |
| 116 | 1713 |
| 167 | 1714 ////////////////////////////////////////////////////////////////////////////// |
| 1715 // backup_sim_pres_tissue | |
| 1716 // | |
| 116 | 1717 void backup_sim_pres_tissue(void) |
| 1718 { | |
| 167 | 1719 overlay unsigned char x; |
| 1720 | |
| 1721 for(x = 0; x<32; x++) | |
| 126 | 1722 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1723 } |
| 116 | 1724 |
| 167 | 1725 ////////////////////////////////////////////////////////////////////////////// |
| 1726 // restore_sim_pres_tissue | |
| 1727 // | |
| 116 | 1728 void restore_sim_pres_tissue(void) |
| 1729 { | |
| 167 | 1730 overlay unsigned char x; |
| 1731 | |
| 1732 for(x = 0; x<32; x++) | |
| 126 | 1733 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1734 } |
| 116 | 1735 |
| 167 | 1736 ////////////////////////////////////////////////////////////////////////////// |
| 1737 // calc_ascenttime | |
| 1738 // | |
|
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1739 // Summup ascent from bottom to surface, at 1 bar/min, 1min for last 3 meters, |
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1740 // and all stops. |
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1741 // |
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1742 // Result in int_O_ascenttime, or int_O_extra_ascenttime if in @+5min variant. |
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1743 static void calc_ascenttime(void) |
| 116 | 1744 { |
| 323 | 1745 overlay unsigned char x; |
| 1746 overlay unsigned short sum; | |
| 168 | 1747 |
| 323 | 1748 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
| 1749 overlay float ascent = pres_respiration - pres_surface + 0.7; | |
| 1750 if (ascent < 0.0) | |
| 1751 ascent = 0.0; | |
| 1752 sum = (unsigned short)(ascent + 0.99); | |
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1753 |
| 323 | 1754 for(x=0; x<32 && internal_deco_depth[x]; x++) |
| 1755 sum += (unsigned short)internal_deco_time[x]; | |
| 1756 | |
| 1757 if( char_O_deco_status == 1 ) | |
| 1758 int_O_ascenttime = sum; | |
| 126 | 1759 else |
| 323 | 1760 int_O_extra_ascenttime = sum; |
| 167 | 1761 } |
| 116 | 1762 |
| 167 | 1763 ////////////////////////////////////////////////////////////////////////////// |
| 1764 // update_startvalues | |
| 1765 // | |
| 116 | 1766 // updated in v.102 |
| 167 | 1767 // |
| 116 | 1768 void update_startvalues(void) |
| 1769 { | |
| 167 | 1770 overlay unsigned char x; |
| 116 | 1771 |
| 201 | 1772 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1773 for (x = 0;x<16;x++) |
| 1774 { | |
| 1775 sim_pres_tissue[x] = pres_tissue[x]; | |
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1776 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1777 } |
| 197 | 1778 |
| 201 | 1779 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1780 sim_lead_tissue_limit = 0.0; |
| 1781 sim_lead_tissue_no = 255; | |
| 167 | 1782 } |
| 116 | 1783 |
| 167 | 1784 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1785 // sim_tissue |
| 167 | 1786 // |
| 116 | 1787 // optimized in v.101 |
| 167 | 1788 // |
| 1789 // Function very simular to calc_tissue, but: | |
| 1790 // + Use a 1min or 10min period. | |
| 1791 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1792 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1793 { |
| 251 | 1794 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1795 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1796 |
| 192 | 1797 for(ci=0; ci<16; ci++) |
| 126 | 1798 { |
| 258 | 1799 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
| 165 | 1800 |
| 126 | 1801 // N2 |
| 236 | 1802 temp_tissue = (ppN2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1803 temp_tissue_safety(); |
| 167 | 1804 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1805 |
| 1806 // He | |
| 200 | 1807 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1808 temp_tissue_safety(); |
| 167 | 1809 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1810 } |
| 167 | 1811 } |
| 116 | 1812 |
| 167 | 1813 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1814 // sim_limit() |
| 1815 // | |
| 1816 // New in v.111 | |
| 1817 // | |
| 1818 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1819 // different depth, because it depends on current gradient factor. | |
| 167 | 1820 // |
| 192 | 1821 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1822 { |
| 212 | 1823 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1824 | |
| 192 | 1825 sim_lead_tissue_limit = 0.0; |
| 212 | 1826 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1827 |
| 1828 for(ci=0; ci<16; ci++) | |
| 1829 { | |
| 241 | 1830 overlay float N2 = sim_pres_tissue[ci]; |
| 1831 overlay float He = (sim_pres_tissue+16)[ci]; | |
| 1832 overlay float p = N2 + He; | |
| 192 | 1833 |
| 258 | 1834 read_buhlmann_coefficients(); |
| 241 | 1835 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
| 1836 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 192 | 1837 |
| 1838 // Apply the Eric Baker's varying gradient factor correction. | |
| 1839 // Note: the correction factor depends both on GF and b, | |
| 1840 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1841 // so that can change who is the leading gas... | |
| 1842 // Note: Also depends of the GF_current... | |
| 1843 if( char_I_deco_model == 1 ) | |
| 302 | 1844 p = ( p - var_N2_a * GF_current) |
| 1845 / (GF_current / var_N2_b + 1.0 - GF_current); | |
| 192 | 1846 else |
| 1847 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1848 if( p < 0.0 ) p = 0.0; |
| 192 | 1849 |
| 1850 if( p > sim_lead_tissue_limit ) | |
| 1851 { | |
| 1852 sim_lead_tissue_no = ci; | |
| 1853 sim_lead_tissue_limit = p; | |
| 1854 } | |
| 1855 } // for ci | |
| 197 | 1856 |
| 1857 assert( sim_lead_tissue_no < 16 ); | |
| 237 | 1858 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1859 } |
| 116 | 1860 |
| 167 | 1861 ////////////////////////////////////////////////////////////////////////////// |
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1862 // clear_deco_table |
| 167 | 1863 // |
| 1864 // unchanged in v.101 | |
| 1865 // | |
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1866 static void clear_deco_table(void) |
| 116 | 1867 { |
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1868 overlay unsigned char x; |
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1869 |
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1870 for(x=0; x<32; ++x) |
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1871 { |
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1872 internal_deco_time [x] = 0; |
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1873 internal_deco_depth[x] = 0; |
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1874 } |
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1875 } |
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1876 |
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1877 ////////////////////////////////////////////////////////////////////////////// |
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1878 // update_deco_table |
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1879 // |
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1880 // Add 1 min to current stop. |
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1881 // |
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1882 // Inputs: |
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1883 // temp_depth_limit = stop's depth, in meters. |
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1884 // In/Out: |
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1885 // internal_deco_depth[] : depth (in metres) of each stops. |
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1886 // internal_deco_time [] : time (in minutes) of each stops. |
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1887 // |
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1888 static void update_deco_table() |
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1889 { |
| 192 | 1890 overlay unsigned char x; |
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1891 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1892 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1893 |
| 192 | 1894 for(x=0; x<32; ++x) |
| 1895 { | |
| 212 | 1896 // Make sure deco-stops are recorded in order: |
| 1897 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
| 1898 | |
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1899 if( (internal_deco_depth[x] & 0x7F) == temp_depth_limit ) |
| 192 | 1900 { |
| 1901 // Do not overflow (max 255') | |
| 1902 if( internal_deco_time[x] < 255 ) | |
| 1903 { | |
| 1904 internal_deco_time[x]++; | |
| 1905 return; | |
| 1906 } | |
| 1907 // But store extra in the next stop... | |
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1908 } |
| 192 | 1909 |
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1910 if( internal_deco_depth[x] == 0 ) |
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1911 { |
| 192 | 1912 internal_deco_depth[x] = temp_depth_limit; |
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1913 if( sim_gas_delay > sim_dive_mins ) |
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1914 internal_deco_depth[x] |= 0x80; |
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1915 |
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1916 internal_deco_time[x] = 1; |
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1917 return; |
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1918 } |
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1919 } |
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1920 |
| 192 | 1921 // Can't store stops at more than 96m. |
| 1922 // Or stops at less that 3m too. | |
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1923 // Just do nothing with that... |
| 167 | 1924 } |
| 116 | 1925 |
| 167 | 1926 ////////////////////////////////////////////////////////////////////////////// |
| 1927 // calc_gradient_factor | |
| 1928 // | |
| 165 | 1929 // optimized in v.101 (var_N2_a) |
| 116 | 1930 // new code in v.102 |
| 167 | 1931 // |
| 1932 static void calc_gradient_factor(void) | |
| 116 | 1933 { |
| 197 | 1934 overlay float gf; |
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1935 overlay float N2 = pres_tissue[char_O_gtissue_no]; |
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1936 overlay float He = (pres_tissue+16)[char_O_gtissue_no]; |
| 237 | 1937 |
| 197 | 1938 assert( char_O_gtissue_no < 16 ); |
| 237 | 1939 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1940 |
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1941 // tissue > respiration (currently off-gasing) |
| 302 | 1942 // GF = 0% when respiration == tissue, ie. bubbles are at equilibrium. |
| 1943 // GF = 100% when respiration == limit. | |
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1944 temp_tissue = N2 + He; |
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1945 if( temp_tissue <= pres_respiration ) |
| 197 | 1946 gf = 0.0; |
| 1947 else | |
| 1948 { | |
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1949 overlay float limit = calc_lead_tissue_limit; |
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1950 // NOTE: in GF model, calc_lead_tissue_limit include already the |
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1951 // correction due to gradient factor. To compute the actual |
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1952 // current GF, we need to (re-)compute the raw ambiant-pressure |
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1953 // limit from the Bühlmann model. |
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1954 if( char_I_deco_model == 1 ) |
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1955 { |
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1956 ci = char_O_gtissue_no; |
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1957 read_buhlmann_coefficients(); |
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1958 var_N2_a = (var_N2_a * N2 + var_He_a * He) / temp_tissue; |
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1959 var_N2_b = (var_N2_b * N2 + var_He_b * He) / temp_tissue; |
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1960 limit = (temp_tissue - var_N2_a) * var_N2_b; |
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1961 } |
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1962 |
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1963 gf = (temp_tissue - pres_respiration) |
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1964 / (temp_tissue - limit) |
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1965 * 100.0; |
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1966 if( gf > 254.5 ) gf = 255.0; |
| 197 | 1967 if( gf < 0.0 ) gf = 0.0; |
| 1968 } | |
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1969 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
| 116 | 1970 |
| 1971 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1972 { | |
| 197 | 1973 overlay float rgf; |
| 1974 | |
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1975 if( low_depth < 1.5 ) |
| 197 | 1976 rgf = GF_high; |
| 1977 else | |
| 1978 { | |
| 317 | 1979 overlay float temp1 = low_depth * METER_TO_BAR; |
| 197 | 1980 overlay float temp2 = pres_respiration - pres_surface; |
| 186 | 1981 |
| 197 | 1982 if (temp2 <= 0) |
| 1983 rgf = GF_high; | |
| 1984 else if (temp2 >= temp1) | |
| 1985 rgf = GF_low; | |
| 1986 else | |
| 1987 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 1988 } | |
| 186 | 1989 |
| 197 | 1990 rgf = gf / rgf; // gf is already in percent |
| 1991 if( rgf < 0.0 ) rgf = 0.0; | |
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1992 if( rgf > 254.5 ) rgf = 255.0; |
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1993 char_O_relative_gradient_GF = (unsigned char)(rgf+0.5f); |
| 116 | 1994 } // calc relative gradient factor |
| 1995 else | |
| 1996 { | |
| 186 | 1997 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 1998 } |
| 167 | 1999 } |
| 116 | 2000 |
| 167 | 2001 ////////////////////////////////////////////////////////////////////////////// |
| 2002 // deco_calc_desaturation_time | |
| 2003 // | |
| 116 | 2004 // FIXED N2_ratio |
| 2005 // unchanged in v.101 | |
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2006 // Inputs: int_I_pres_surface, ppWater, char_I_desaturation_multiplier |
| 233 | 2007 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] |
| 167 | 2008 // |
| 116 | 2009 void deco_calc_desaturation_time(void) |
| 2010 { | |
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2011 RESET_C_STACK |
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2012 |
| 233 | 2013 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2014 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2015 | |
|
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2016 #ifndef CROSS_COMPILE |
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2017 // Note: we don't use far rom pointer, because the |
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2018 // 24 bits is to complex, hence we have to set |
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2019 // the UPPER page ourself... |
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2020 // --> Set zero if tables are moved to lower pages ! |
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2021 _asm |
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2022 movlw 1 |
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2023 movwf TBLPTRU,0 |
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2024 _endasm |
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2025 #endif |
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2026 |
| 237 | 2027 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 2028 pres_surface = int_I_pres_surface * 0.001; |
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2029 ppN2 = N2_ratio * (pres_surface - ppWater); |
| 126 | 2030 int_O_desaturation_time = 0; |
| 2031 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 233 | 2032 |
| 126 | 2033 for (ci=0;ci<16;ci++) |
| 2034 { | |
| 251 | 2035 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 2036 overlay float temp1; | |
| 2037 overlay float temp2; | |
| 2038 overlay float temp3; | |
| 2039 overlay float temp4; | |
| 2040 | |
| 126 | 2041 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 2042 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 2043 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
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2044 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
| 126 | 2045 // N2 |
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2046 temp1 = 1.05 * ppN2 - pres_tissue[ci]; |
| 236 | 2047 temp2 = ppN2 - pres_tissue[ci]; |
| 126 | 2048 if (temp2 >= 0.0) |
| 2049 { | |
| 233 | 2050 temp1 = 0.0; |
| 2051 temp2 = 0.0; | |
| 126 | 2052 } |
| 2053 else | |
| 2054 temp1 = temp1 / temp2; | |
| 251 | 2055 if( 0.0 < temp1 && temp1 < 1.0 ) |
| 126 | 2056 { |
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2057 overlay float var_N2_halftime = buhlmann_ht[ci]; |
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2058 assert( 4.0 <= var_N2_halftime && var_N2_halftime <= 635.0 ); |
| 252 | 2059 |
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2060 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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2061 // minus because log is negative. |
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2062 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
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2063 temp2 = var_N2_halftime * temp1 / float_desaturation_multiplier; // time necessary (in minutes ) for complete desaturation (see comment about 5 percent) , new in v.101: float_desaturation_multiplier |
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2064 |
| 126 | 2065 } |
| 2066 else | |
| 2067 { | |
| 233 | 2068 temp1 = 0.0; |
| 2069 temp2 = 0.0; | |
| 126 | 2070 } |
| 116 | 2071 |
| 126 | 2072 // He |
| 167 | 2073 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 2074 if (temp3 >= 0.0) |
| 2075 { | |
| 233 | 2076 temp3 = 0.0; |
| 2077 temp4 = 0.0; | |
| 126 | 2078 } |
| 2079 else | |
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2080 temp3 = - temp3 / (pres_tissue+16)[ci]; |
| 251 | 2081 if( 0.0 < temp3 && temp3 < 1.0 ) |
| 126 | 2082 { |
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2083 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; |
| 261 | 2084 assert( 1.51 <= var_He_halftime && var_He_halftime <= 240.03 ); |
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2085 |
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2086 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
| 126 | 2087 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
| 2088 // minus because log is negative | |
| 165 | 2089 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 2090 } |
| 2091 else | |
| 2092 { | |
| 233 | 2093 temp3 = 0.0; |
| 2094 temp4 = 0.0; | |
| 126 | 2095 } |
| 116 | 2096 |
| 126 | 2097 // saturation_time (for flight) |
| 2098 if (temp4 > temp2) | |
| 203 | 2099 desat_time = (unsigned short)temp4; |
| 126 | 2100 else |
| 203 | 2101 desat_time = (unsigned short)temp2; |
| 252 | 2102 |
| 251 | 2103 if(desat_time > int_O_desaturation_time) |
| 2104 int_O_desaturation_time = desat_time; | |
| 116 | 2105 |
| 126 | 2106 // N2 saturation in multiples of halftime for display purposes |
| 2107 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 2108 temp2 = temp2 + 80.0; // set center | |
| 2109 if (temp2 < 0.0) | |
| 2110 temp2 = 0.0; | |
| 2111 if (temp2 > 255.0) | |
| 2112 temp2 = 255.0; | |
| 2113 char_O_tissue_saturation[ci] = (char)temp2; | |
| 233 | 2114 |
| 126 | 2115 // He saturation in multiples of halftime for display purposes |
| 2116 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 2117 temp4 = temp4 + 80.0; // set center | |
| 2118 if (temp4 < 0.0) | |
| 2119 temp4 = 0.0; | |
| 2120 if (temp4 > 255.0) | |
| 2121 temp4 = 255.0; | |
| 167 | 2122 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 2123 } // for |
| 167 | 2124 } |
| 116 | 2125 |
| 167 | 2126 ////////////////////////////////////////////////////////////////////////////// |
| 2127 // calc_wo_deco_step_1_min | |
| 2128 // | |
| 116 | 2129 // FIXED N2 Ratio |
| 2130 // optimized in v.101 (...saturation_multiplier) | |
| 2131 // desaturation slowed down to 70,42% | |
| 167 | 2132 // |
| 2133 static void calc_wo_deco_step_1_min(void) | |
| 116 | 2134 { |
| 251 | 2135 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2136 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
| 2137 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
| 2138 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2139 | |
| 116 | 2140 if(flag_in_divemode) |
| 2141 { | |
| 2142 flag_in_divemode = 0; | |
| 2143 set_dbg_end_of_dive(); | |
| 2144 } | |
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2145 |
| 126 | 2146 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 233 | 2147 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
| 2148 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
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2149 ppN2 = N2_ratio * (pres_respiration - ppWater); // ppWater is the extra pressure in the body |
| 200 | 2150 ppHe = 0.0; |
| 126 | 2151 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 2152 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 2153 |
| 192 | 2154 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 2155 |
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2156 clear_deco_table(); |
| 200 | 2157 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 2158 char_O_nullzeit = 0; |
| 168 | 2159 int_O_ascenttime = 0; |
| 323 | 2160 int_O_extra_ascenttime = 0; |
| 126 | 2161 calc_gradient_factor(); |
| 167 | 2162 } |
| 126 | 2163 |
| 167 | 2164 ////////////////////////////////////////////////////////////////////////////// |
| 2165 ////////////////////////////////////////////////////////////////////////////// | |
| 2166 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 2167 ////////////////////////////////////////////////////////////////////////////// | |
| 2168 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 2169 |
| 184 | 2170 #ifndef CROSS_COMPILE |
| 116 | 2171 void deco_hash(void) |
| 2172 { | |
| 167 | 2173 overlay unsigned char md_i, md_j; // Loop index. |
| 2174 overlay unsigned char md_t; | |
| 2175 overlay unsigned char md_buffer[16]; | |
| 2176 overlay unsigned char md_temp; | |
| 203 | 2177 overlay unsigned short md_pointer; |
| 167 | 2178 |
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2179 RESET_C_STACK |
| 126 | 2180 |
| 2181 // init | |
| 164 | 2182 for(md_i=0;md_i<16;md_i++) |
| 126 | 2183 { |
| 2184 md_state[md_i] = 0; | |
| 164 | 2185 char_O_hash[md_i] = 0; |
| 126 | 2186 } // for md_i 16 |
| 116 | 2187 |
| 126 | 2188 _asm |
| 167 | 2189 movlw 0x01 // md_pi address. |
| 2190 movwf TBLPTRU,0 | |
| 2191 movlw 0x7E | |
| 2192 movwf TBLPTRH,0 | |
| 2193 movlw 0x00 | |
| 2194 movwf TBLPTRL,0 | |
| 126 | 2195 _endasm; |
| 165 | 2196 md_i = 0; |
| 2197 do { | |
| 126 | 2198 _asm |
| 2199 TBLRDPOSTINC | |
| 2200 movff TABLAT,md_temp | |
| 2201 _endasm | |
| 165 | 2202 md_pi_subst[md_i++] = md_temp; |
| 2203 } while( md_i != 0 ); | |
| 2204 | |
| 126 | 2205 _asm |
| 167 | 2206 movlw 0x00 |
| 2207 movwf TBLPTRU,0 | |
| 2208 movlw 0x00 | |
| 2209 movwf TBLPTRH,0 | |
| 2210 movlw 0x00 | |
| 2211 movwf TBLPTRL,0 | |
| 126 | 2212 _endasm |
| 167 | 2213 |
| 126 | 2214 // cycle buffers |
| 2215 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 2216 { | |
| 2217 md_t = 0; | |
| 2218 for (md_i=0;md_i<16;md_i++) | |
| 2219 { | |
| 2220 if(md_pointer == 9) | |
| 164 | 2221 md_temp = char_O_hash[md_i]; |
| 126 | 2222 else |
| 2223 { | |
| 2224 _asm | |
| 167 | 2225 TBLRDPOSTINC |
| 2226 movff TABLAT,md_temp | |
| 126 | 2227 _endasm |
| 2228 } // else | |
| 167 | 2229 |
| 2230 md_buffer[md_i] = md_temp; | |
| 186 | 2231 md_state[md_i+16] = md_temp; |
| 2232 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2233 } // for md_i 16 |
| 2234 | |
| 2235 for (md_i=0;md_i<18;md_i++) | |
| 2236 { | |
| 2237 for (md_j=0;md_j<48;md_j++) | |
| 2238 { | |
| 167 | 2239 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2240 md_t = md_state[md_j]; |
| 2241 } // for md_j 48 | |
| 2242 md_t = (unsigned char)(md_t+1); | |
| 2243 } // for md_i 18 | |
| 164 | 2244 md_t = char_O_hash[15]; |
| 126 | 2245 |
| 2246 for (md_i=0;md_i<16;md_i++) | |
| 2247 { | |
| 167 | 2248 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2249 md_t = char_O_hash[md_i]; |
| 126 | 2250 } // for md_i 16 |
| 2251 } // for md_pointer | |
| 116 | 2252 } // void deco_hash(void) |
| 184 | 2253 #endif |
| 116 | 2254 |
| 167 | 2255 ////////////////////////////////////////////////////////////////////////////// |
| 2256 // deco_clear_CNS_fraction | |
| 2257 // | |
| 116 | 2258 // new in v.101 |
| 167 | 2259 // |
| 116 | 2260 void deco_clear_CNS_fraction(void) |
| 2261 { | |
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2262 RESET_C_STACK |
| 237 | 2263 |
| 126 | 2264 CNS_fraction = 0.0; |
| 2265 char_O_CNS_fraction = 0; | |
| 167 | 2266 } |
| 116 | 2267 |
| 167 | 2268 ////////////////////////////////////////////////////////////////////////////// |
| 2269 // deco_calc_CNS_fraction | |
| 2270 // | |
| 116 | 2271 // new in v.101 |
| 2272 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 2273 // |
| 116 | 2274 // Input: char_I_actual_ppO2 |
| 292 | 2275 // char_I_step_is_1min : use 1min steps instead of 2sec. |
| 116 | 2276 // Output: char_O_CNS_fraction |
| 2277 // Uses and Updates: CNS_fraction | |
| 2278 // Uses: acutal_ppO2 | |
| 167 | 2279 // |
| 116 | 2280 void deco_calc_CNS_fraction(void) |
| 2281 { | |
| 167 | 2282 overlay float actual_ppO2; |
| 292 | 2283 overlay float time_factor = 1.0f; |
| 126 | 2284 RESET_C_STACK |
| 167 | 2285 |
| 237 | 2286 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); |
| 2287 assert( char_I_actual_ppO2 > 15 ); | |
| 2288 | |
| 126 | 2289 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 292 | 2290 if( char_I_step_is_1min ) |
| 2291 time_factor = 30.0f; | |
| 116 | 2292 |
| 126 | 2293 if (char_I_actual_ppO2 < 50) |
| 292 | 2294 ; // no changes |
| 126 | 2295 else if (char_I_actual_ppO2 < 60) |
| 292 | 2296 CNS_fraction += time_factor/(-54000.0 * actual_ppO2 + 54000.0); |
| 126 | 2297 else if (char_I_actual_ppO2 < 70) |
| 292 | 2298 CNS_fraction += time_factor/(-45000.0 * actual_ppO2 + 48600.0); |
| 126 | 2299 else if (char_I_actual_ppO2 < 80) |
| 292 | 2300 CNS_fraction += time_factor/(-36000.0 * actual_ppO2 + 42300.0); |
| 126 | 2301 else if (char_I_actual_ppO2 < 90) |
| 292 | 2302 CNS_fraction += time_factor/(-27000.0 * actual_ppO2 + 35100.0); |
| 126 | 2303 else if (char_I_actual_ppO2 < 110) |
| 292 | 2304 CNS_fraction += time_factor/(-18000.0 * actual_ppO2 + 27000.0); |
| 126 | 2305 else if (char_I_actual_ppO2 < 150) |
| 292 | 2306 CNS_fraction += time_factor/(-9000.0 * actual_ppO2 + 17100.0); |
| 126 | 2307 else if (char_I_actual_ppO2 < 160) |
| 292 | 2308 CNS_fraction += time_factor/(-22500.0 * actual_ppO2 + 37350.0); |
| 126 | 2309 else if (char_I_actual_ppO2 < 165) |
| 292 | 2310 CNS_fraction += time_factor*0.000755; // Arieli et all.(2002): Modeling pulmonary and CNS O2 toxicity... Formula (A1) based on value for 1.55 and c=20 |
| 126 | 2311 else if (char_I_actual_ppO2 < 170) |
| 292 | 2312 CNS_fraction += time_factor*0.00102; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 |
| 126 | 2313 else if (char_I_actual_ppO2 < 175) |
| 292 | 2314 CNS_fraction += time_factor*0.00136; |
| 126 | 2315 else if (char_I_actual_ppO2 < 180) |
| 292 | 2316 CNS_fraction += time_factor*0.00180; |
| 126 | 2317 else if (char_I_actual_ppO2 < 185) |
| 292 | 2318 CNS_fraction += time_factor*0.00237; |
| 126 | 2319 else if (char_I_actual_ppO2 < 190) |
| 292 | 2320 CNS_fraction += time_factor*0.00310; |
| 126 | 2321 else if (char_I_actual_ppO2 < 195) |
| 292 | 2322 CNS_fraction += time_factor*0.00401; |
| 126 | 2323 else if (char_I_actual_ppO2 < 200) |
| 292 | 2324 CNS_fraction += time_factor*0.00517; |
| 126 | 2325 else if (char_I_actual_ppO2 < 230) |
| 292 | 2326 CNS_fraction += time_factor*0.0209; |
| 126 | 2327 else |
| 292 | 2328 CNS_fraction += time_factor*0.0482; // value for 2.5 |
| 116 | 2329 |
| 126 | 2330 if (CNS_fraction > 2.5) |
| 2331 CNS_fraction = 2.5; | |
| 2332 if (CNS_fraction < 0.0) | |
| 2333 CNS_fraction = 0.0; | |
| 2334 | |
| 2335 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2336 } |
| 116 | 2337 |
| 167 | 2338 ////////////////////////////////////////////////////////////////////////////// |
| 2339 // deco_calc_CNS_decrease_15min | |
| 2340 // | |
| 116 | 2341 // new in v.101 |
| 167 | 2342 // |
| 116 | 2343 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2344 // (Used in sleepmode, for low battery mode). |
| 167 | 2345 // |
| 116 | 2346 // Output: char_O_CNS_fraction |
| 2347 // Uses and Updates: CNS_fraction | |
| 167 | 2348 // |
| 116 | 2349 void deco_calc_CNS_decrease_15min(void) |
| 2350 { | |
| 237 | 2351 RESET_C_STACK |
| 2352 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
| 2353 | |
| 126 | 2354 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2355 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2356 } | |
| 116 | 2357 |
| 167 | 2358 ////////////////////////////////////////////////////////////////////////////// |
| 2359 // deco_calc_percentage | |
| 2360 // | |
| 116 | 2361 // new in v.101 |
| 167 | 2362 // |
| 116 | 2363 // calculates int_I_temp * char_I_temp / 100 |
| 2364 // output is int_I_temp | |
| 200 | 2365 // |
| 2366 // Used to compute NoFly remaining time. | |
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2367 // |
| 116 | 2368 void deco_calc_percentage(void) |
| 2369 { | |
|
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2370 RESET_C_STACK |
|
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2371 |
| 237 | 2372 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 2373 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
| 2374 | |
|
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2375 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2376 |
| 302 | 2377 assert( int_I_temp < 2880 ); // Less than 48h... |
|
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2378 } |
|
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2379 |
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2380 |
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2381 ////////////////////////////////////////////////////////////////////////////// |
|
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2382 // deco_gas_volumes |
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2383 // |
|
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2384 // new in v.111 |
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2385 // |
|
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2386 // calculates volumes for each gas. |
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2387 // |
|
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2388 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
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2389 // Gas list. |
|
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2390 // char_I_first_gas is the bottom gas. |
|
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2391 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
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2392 // CF#54 == TRUE if shallowest stop first. |
|
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2393 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) or bar/min. |
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2394 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0) or bar/min. |
| 224 | 2395 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
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2396 // |
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2397 void deco_gas_volumes(void) |
|
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2398 { |
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2399 overlay float volumes[5]; |
| 265 | 2400 overlay float bottom_usage, ascent_usage; |
|
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2401 overlay unsigned char i, deepest_first; |
| 241 | 2402 overlay unsigned char gas; |
|
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2403 RESET_C_STACK |
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2404 |
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2405 //---- initialize with bottom consumption -------------------------------- |
|
240
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2406 for(i=0; i<5; ++i) // Nothing yet... |
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2407 volumes[i] = 0.0; |
|
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2408 |
| 241 | 2409 assert(1 <= char_I_first_gas && char_I_first_gas <= 5); |
| 2410 gas = char_I_first_gas - 1; | |
| 2411 | |
| 265 | 2412 bottom_usage = read_custom_function(56) * 0.1; |
| 2413 if( bottom_usage > 0.0 ) | |
| 2414 volumes[gas] | |
| 2415 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
| 2416 * char_I_bottom_time // in minutes. | |
| 2417 * bottom_usage; // In liter/minutes. | |
| 2418 else | |
| 2419 volumes[gas] = 65535.0; | |
|
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2420 |
|
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2421 //---- Ascent usage ------------------------------------------------------ |
|
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2422 |
|
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2423 deepest_first = read_custom_function(54) == 0; |
|
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2424 ascent_usage = read_custom_function(57) * 0.1; // In liter/minutes. |
|
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2425 |
| 224 | 2426 // Usage up to the first stop: |
| 2427 // - computed at MAX depth (easier, safer), | |
|
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2428 // - with an ascent speed of 10m/min. |
| 224 | 2429 // - with ascent litter / minutes. |
|
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2430 // - still using bottom gas: |
| 265 | 2431 if( ascent_usage > 0.0 ) |
| 2432 volumes[gas] | |
| 2433 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar | |
| 2434 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) | |
| 2435 * ascent_usage; // Consumption ( xxx / min @ 1 bar) | |
| 2436 else | |
| 2437 volumes[gas] = 65535.0; | |
|
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2438 |
|
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2439 for(i=0; i<32; ++i) |
|
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2440 { |
| 241 | 2441 overlay unsigned char j; |
|
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2442 overlay unsigned char depth, time, ascent; |
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2443 |
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2444 // Manage stops in reverse order (CF#54) |
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2445 if( deepest_first ) |
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2446 { |
| 241 | 2447 time = char_O_deco_time[i]; |
|
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2448 if( time == 0 ) break; // End of table: done. |
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2449 |
|
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2450 ascent = depth = char_O_deco_depth[i] & 0x7F; |
|
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2451 if( i < 31 ) |
|
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2452 ascent -= char_O_deco_depth[i+1] & 0x7F; |
|
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2453 } |
|
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2454 else |
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2455 { |
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2456 time = char_O_deco_time[31-i]; |
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2457 if( time == 0 ) continue; // not yet: still searh table. |
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2458 |
|
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2459 ascent = depth = char_O_deco_depth[31-i] & 0x7F; |
|
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2460 if( i < 31 ) |
|
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2461 ascent -= char_O_deco_depth[30-i] & 0x7F; |
|
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2462 } |
|
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2463 |
|
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2464 // Gas switch depth ? |
| 241 | 2465 for(j=0; j<5; ++j) |
|
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2466 { |
|
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2467 if( depth <= char_I_deco_gas_change[j] ) |
| 241 | 2468 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 224 | 2469 gas = j; |
|
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2470 } |
|
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2471 |
|
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2472 // usage during stop: |
| 224 | 2473 // Note: because first gas is not in there, increment gas+1 |
| 265 | 2474 if( ascent_usage > 0.0 ) |
| 2475 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. | |
| 2476 * time // in minutes. | |
| 2477 * ascent_usage // in xxx / min @ 1bar. | |
| 2478 // Plus usage during ascent to the next stop, at 10m/min. | |
| 2479 + (depth*0.1 + 1.0) | |
|
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2480 * ascent*0.1 // metre --> min |
| 265 | 2481 * ascent_usage; |
| 2482 else | |
| 2483 volumes[gas] = 65535.0; | |
|
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2484 } |
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2485 |
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2486 //---- convert results for the ASM interface ----------------------------- |
|
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2487 for(i=0; i<5; ++i) |
| 224 | 2488 if( volumes[i] > 6553.4 ) |
| 2489 int_O_gas_volumes[i] = 65535; | |
|
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2490 else |
| 224 | 2491 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
| 116 | 2492 } |
| 2493 | |
| 167 | 2494 ////////////////////////////////////////////////////////////////////////////// |
| 2495 | |
| 116 | 2496 void deco_push_tissues_to_vault(void) |
| 2497 { | |
| 167 | 2498 overlay unsigned char x; |
|
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2499 RESET_C_STACK |
| 167 | 2500 |
| 116 | 2501 cns_vault = CNS_fraction; |
| 167 | 2502 for (x=0;x<32;x++) |
| 2503 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2504 } |
| 167 | 2505 |
| 116 | 2506 void deco_pull_tissues_from_vault(void) |
| 2507 { | |
| 167 | 2508 overlay unsigned char x; |
|
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2509 RESET_C_STACK |
| 167 | 2510 |
| 2511 for (x=0;x<32;x++) | |
| 2512 pres_tissue[x] = pres_tissue_vault[x]; | |
| 292 | 2513 |
| 2514 // Restore both CNS variable, too. | |
| 2515 CNS_fraction = cns_vault; | |
| 2516 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); | |
| 116 | 2517 } |
| 2518 | |
| 167 | 2519 ////////////////////////////////////////////////////////////////////////////// |
| 2520 // | |
| 184 | 2521 #ifndef CROSS_COMPILE |
| 2522 void main() {} | |
| 2523 #endif |