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annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 315:cce563347c94 @5 variant
german translation update
| author | heinrichsweikamp |
|---|---|
| date | Wed, 04 May 2011 08:13:27 +0200 |
| parents | b7e4e74c0e17 |
| children | 1de9eee3837b |
| 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. |
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108 #define ppWater 0.0627 |
| 200 | 109 |
| 167 | 110 // ************************* |
| 111 // ** P R O T O T Y P E S ** | |
| 112 // ************************* | |
| 113 | |
| 114 static void calc_hauptroutine(void); | |
| 115 static void calc_nullzeit(void); | |
| 116 | |
| 192 | 117 static void calc_tissue(PARAMETER unsigned char period); |
| 258 | 118 static void calc_limit(void); |
| 192 | 119 |
| 167 | 120 static void clear_tissue(void); |
| 121 static void calc_ascenttime(void); | |
| 122 static void update_startvalues(void); | |
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123 static void clear_deco_table(void); |
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124 static void update_deco_table(void); |
| 192 | 125 |
| 126 static void backup_sim_pres_tissue(void); | |
| 127 static void restore_sim_pres_tissue(void); | |
| 128 static void sim_tissue(PARAMETER unsigned char period); | |
| 129 static void sim_limit(PARAMETER float GF_current); | |
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130 static void sim_extra_time(void); |
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131 |
| 167 | 132 static void calc_gradient_factor(void); |
| 133 static void calc_wo_deco_step_1_min(void); | |
| 134 | |
| 135 static void calc_hauptroutine_data_input(void); | |
| 136 static void calc_hauptroutine_update_tissues(void); | |
| 137 static void calc_hauptroutine_calc_deco(void); | |
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138 static void sim_ascent_to_first_stop(void); |
| 167 | 139 |
| 241 | 140 static unsigned char gas_switch_deepest(void); |
| 141 static void gas_switch_set(void); | |
| 217 | 142 |
| 241 | 143 static unsigned char calc_nextdecodepth(void); |
| 116 | 144 |
| 200 | 145 //---- Bank 4 parameters ----------------------------------------------------- |
| 163 | 146 #pragma udata bank4=0x400 |
| 116 | 147 |
| 148 static float temp_limit; | |
| 149 static float GF_low; | |
| 150 static float GF_high; | |
| 151 static float GF_delta; | |
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152 static float low_depth; // Depth of deepest stop |
| 192 | 153 static float locked_GF_step; // GF_delta / low_depth |
| 154 | |
| 155 static unsigned char temp_depth_limit; | |
| 171 | 156 |
| 192 | 157 // Simulation context: used to predict ascent. |
| 158 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
| 159 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
| 116 | 160 |
| 192 | 161 // Real context: what we are doing now. |
| 162 static float calc_lead_tissue_limit; // | |
| 116 | 163 |
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164 static unsigned char internal_deco_time[32]; |
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165 static unsigned char internal_deco_depth[32]; |
| 116 | 166 |
| 167 static float cns_vault; | |
| 168 static float pres_tissue_vault[32]; | |
| 169 | |
| 163 | 170 //---- Bank 5 parameters ----------------------------------------------------- |
| 171 #pragma udata bank5=0x500 | |
| 172 | |
| 167 | 173 static unsigned char ci; |
| 116 | 174 static float pres_respiration; |
| 175 static float pres_surface; | |
| 176 static float temp_deco; | |
| 236 | 177 static float ppN2; |
| 200 | 178 static float ppHe; |
| 116 | 179 static float temp_tissue; |
| 200 | 180 static float N2_ratio; // Breathed gas nitrogen ratio. |
| 181 static float He_ratio; // Breathed gas helium ratio. | |
| 182 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
| 183 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
| 184 static float var_He_a; // Bühlmann a, for current He tissue. | |
| 185 static float var_He_b; // Bühlmann b, for current He tissue. | |
| 186 static float var_N2_e; // Exposition, for current N2 tissue. | |
| 187 static float var_He_e; // Exposition, for current He tissue. | |
| 116 | 188 |
| 164 | 189 static float pres_diluent; // new in v.101 |
| 190 static float const_ppO2; // new in v.101 | |
| 191 static float deco_ppO2_change; // new in v.101 | |
| 192 static float deco_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_deco_ppO2_change; // new in v.108 | |
| 241 static float DBG_deco_ppO2; // new in v.108 | |
| 242 static float DBG_float_saturation_multiplier; // new in v.108 | |
| 243 static float DBG_float_desaturation_multiplier; // new in v.108 | |
| 244 static float DBG_float_deco_distance; // new in v.108 | |
| 245 static float DBG_N2_ratio; // new in v.108 | |
| 246 static float DBG_He_ratio; // new in v.108 | |
| 247 | |
| 167 | 248 ////////////////////////////////////////////////////////////////////////////// |
| 249 ////////////////////////////////////////////////////////////////////////////// | |
| 250 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
| 251 ////////////////////////////////////////////////////////////////////////////// | |
| 252 ////////////////////////////////////////////////////////////////////////////// | |
| 253 // | |
| 254 // End of PROM code is 17F00, So push tables on PROM top... | |
| 255 // | |
| 256 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
| 257 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
| 116 | 258 |
| 167 | 259 // Magic table to compute the MD2 HASH |
| 260 // | |
| 261 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
| 203 | 262 rom const rom unsigned short md_pi[] = |
| 116 | 263 { |
| 264 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
| 265 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
| 266 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
| 267 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
| 268 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
| 269 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
| 270 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
| 271 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
| 272 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
| 273 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
| 274 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
| 275 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
| 276 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
| 277 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
| 278 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
| 279 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
| 280 }; | |
| 281 | |
| 167 | 282 ////////////////////////////////////////////////////////////////////////////// |
| 283 ////////////////////////////////////////////////////////////////////////////// | |
| 284 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
| 285 ////////////////////////////////////////////////////////////////////////////// | |
| 286 ////////////////////////////////////////////////////////////////////////////// | |
| 287 // | |
| 116 | 288 // all new in v.102 |
| 289 // moved from 0x0D000 to 0x0C000 in v.108 | |
| 290 | |
| 291 #pragma code p2_deco = 0x0C000 | |
| 292 | |
| 167 | 293 ////////////////////////////////////////////////////////////////////////////// |
| 294 // DBS - debug on start of dive | |
| 295 // | |
| 296 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
| 116 | 297 { |
| 167 | 298 overlay char i; // Local loop index. |
| 299 | |
| 300 //---- Reset DEBUG bit fields -------------------------------------------- | |
| 116 | 301 int_O_DBS_bitfield = 0; |
| 302 int_O_DBS2_bitfield = 0; | |
| 303 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
| 304 int_O_DBG_pre_bitfield = DBG_RESTART; | |
| 305 else | |
| 306 int_O_DBG_pre_bitfield = DBG_RUN; | |
| 307 int_O_DBG_post_bitfield = 0; | |
| 167 | 308 |
| 309 //---- Set 20meters ND limit --------------------------------------------- | |
| 116 | 310 char_O_NDL_at_20mtr = 255; |
| 311 | |
| 167 | 312 //---- Copy all dive parameters ------------------------------------------ |
| 116 | 313 DBG_N2_ratio = N2_ratio; |
| 314 DBG_He_ratio = He_ratio; | |
| 315 DBG_char_I_deco_model = char_I_deco_model; | |
| 316 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
| 317 DBG_pres_surface = pres_surface; | |
| 318 DBG_GF_low = GF_low; | |
| 319 DBG_GF_high = GF_high; | |
| 320 DBG_const_ppO2 = const_ppO2; | |
| 321 DBG_deco_ppO2_change = deco_ppO2_change; | |
| 322 DBG_deco_ppO2 = deco_ppO2; | |
| 224 | 323 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
| 324 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
| 225 | 325 DBG_deco_gas_change = deco_gas_change[0]; |
| 116 | 326 DBG_float_saturation_multiplier = float_saturation_multiplier; |
| 327 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
| 328 DBG_float_deco_distance = float_deco_distance; | |
| 329 | |
| 167 | 330 //---- Setup some error (?) conditions ----------------------------------- |
| 116 | 331 if(char_I_deco_model) |
| 332 int_O_DBS_bitfield |= DBS_mode; | |
| 333 if(const_ppO2) | |
| 334 int_O_DBS_bitfield |= DBS_ppO2; | |
| 167 | 335 for(i = 16; i < 32; i++) |
| 336 if(pres_tissue[i]) | |
| 116 | 337 int_O_DBS_bitfield |= DBS_HE_sat; |
| 338 if(deco_ppO2_change) | |
| 339 int_O_DBS_bitfield |= DBS_ppO2chg; | |
| 340 if(float_saturation_multiplier < 0.99) | |
| 341 int_O_DBS_bitfield |= DBS_SAT2l; | |
| 342 if(float_saturation_multiplier > 1.3) | |
| 343 int_O_DBS_bitfield |= DBS_SAT2h; | |
| 344 if(GF_low < 0.19) | |
| 345 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
| 346 if(GF_low > 1.01) | |
| 347 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
| 348 if(GF_high < 0.6) | |
| 349 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
| 350 if(GF_high > 1.01) | |
| 351 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
| 352 if((N2_ratio + He_ratio) > 0.95) | |
| 353 int_O_DBS_bitfield |= DBS_GASO22l; | |
| 354 if((N2_ratio + He_ratio) < 0.05) | |
| 355 int_O_DBS_bitfield |= DBS_GASO22h; | |
| 356 if(float_deco_distance > 0.25) | |
| 357 int_O_DBS_bitfield |= DBS_DIST2h; | |
| 358 if(char_I_depth_last_deco > 8) | |
| 359 int_O_DBS_bitfield |= DBS_LAST2h; | |
| 224 | 360 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
| 116 | 361 int_O_DBS_bitfield |= DBS_DECOO2l; |
| 224 | 362 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
| 116 | 363 int_O_DBS_bitfield |= DBS_DECOO2h; |
| 364 if(pres_respiration > 3.0) | |
| 365 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
| 366 if(pres_surface - pres_respiration > 0.2) | |
| 367 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
| 368 if(pres_surface < 0.75) | |
| 369 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
| 370 if(pres_surface > 1.11) | |
| 371 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
| 372 if(float_desaturation_multiplier < 0.70) | |
| 373 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
| 374 if(float_desaturation_multiplier > 1.01) | |
| 375 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
| 376 if(GF_low > GF_high) | |
| 377 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
| 378 } | |
| 379 | |
| 167 | 380 ////////////////////////////////////////////////////////////////////////////// |
| 381 // DBG - set DBG to end_of_dive | |
| 382 // | |
| 383 static void set_dbg_end_of_dive(void) | |
| 116 | 384 { |
| 385 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
| 386 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
| 387 } | |
| 388 | |
| 167 | 389 ////////////////////////////////////////////////////////////////////////////// |
| 390 // DBG - NDL at first 20 m. hit | |
| 391 // | |
| 392 static void check_ndl(void) | |
| 116 | 393 { |
| 167 | 394 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
| 395 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
| 396 ) | |
| 116 | 397 { |
| 167 | 398 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
| 399 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
| 184 | 400 char_O_NDL_at_20mtr = 254; |
| 116 | 401 } |
| 402 } | |
| 403 | |
| 167 | 404 ////////////////////////////////////////////////////////////////////////////// |
| 405 // DBG - multi main during dive | |
| 406 // | |
| 184 | 407 static void check_dbg(PARAMETER char is_post_check) |
| 116 | 408 { |
| 203 | 409 overlay unsigned short temp_DBS = 0; |
| 200 | 410 overlay unsigned char i; // Local loop index. |
| 167 | 411 |
| 116 | 412 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
| 413 temp_DBS |= DBG_c_gas; | |
| 414 if(DBG_const_ppO2 != const_ppO2) | |
| 415 temp_DBS |= DBG_c_ppO2; | |
| 167 | 416 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
| 417 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
| 418 ) | |
| 116 | 419 temp_DBS |= DBG_CdeSAT; |
| 420 if(DBG_char_I_deco_model != char_I_deco_model) | |
| 421 temp_DBS |= DBG_C_MODE; | |
| 422 if(DBG_pres_surface != pres_surface) | |
| 423 temp_DBS |= DBG_C_SURF; | |
| 167 | 424 |
| 425 if( !DBS_HE_sat && !He_ratio) | |
| 426 for(i = 16; i < 32; i++) | |
| 427 if(pres_tissue[i]) | |
| 116 | 428 temp_DBS |= DBG_HEwoHE; |
| 167 | 429 |
| 116 | 430 if(DBG_deco_ppO2 != deco_ppO2) |
| 431 temp_DBS |= DBG_C_DPPO2; | |
| 167 | 432 |
| 225 | 433 if( DBG_deco_gas_change != deco_gas_change[0] |
| 224 | 434 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
| 435 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
| 116 | 436 temp_DBS |= DBG_C_DGAS; |
| 167 | 437 |
| 116 | 438 if(DBG_float_deco_distance != float_deco_distance) |
| 439 temp_DBS |= DBG_C_DIST; | |
| 440 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
| 441 temp_DBS |= DBG_C_LAST; | |
| 167 | 442 if( DBG_GF_low != GF_low |
| 443 || DBG_GF_high != GF_high ) | |
| 116 | 444 temp_DBS |= DBG_C_GF; |
| 445 if(pres_respiration > 13.0) | |
| 446 temp_DBS |= DBG_PHIGH; | |
| 447 if(pres_surface - pres_respiration > 0.2) | |
| 448 temp_DBS |= DBG_PLOW; | |
| 449 if(is_post_check) | |
| 450 int_O_DBG_post_bitfield |= temp_DBS; | |
| 451 else | |
| 452 int_O_DBG_pre_bitfield |= temp_DBS; | |
| 453 } | |
| 454 | |
| 167 | 455 ////////////////////////////////////////////////////////////////////////////// |
| 456 // DBG - prior to calc. of dive | |
| 457 // | |
| 458 static void check_pre_dbg(void) | |
| 116 | 459 { |
| 460 check_dbg(0); | |
| 461 } | |
| 462 | |
| 167 | 463 ////////////////////////////////////////////////////////////////////////////// |
| 464 // DBG - after decocalc of dive | |
| 465 // | |
| 466 static void check_post_dbg(void) | |
| 116 | 467 { |
| 468 check_dbg(1); | |
| 469 } | |
| 470 | |
| 165 | 471 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 472 ////////////////////////////////////////////////////////////////////////////// |
| 473 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
| 474 ////////////////////////////////////////////////////////////////////////////// | |
| 475 ////////////////////////////////////////////////////////////////////////////// | |
| 476 | |
| 235 | 477 ////////////////////////////////////////////////////////////////////////////// |
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478 // Bump to blue-screen when an assert is wrong |
| 235 | 479 #ifdef __DEBUG |
| 480 void assert_failed(PARAMETER short int line) | |
| 481 { | |
| 482 extern void PLED_resetdebugger(void); | |
| 483 extern unsigned short temp10; | |
| 484 | |
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485 temp10 = line; // Show source line number as stack depth. |
| 235 | 486 PLED_resetdebugger(); |
| 487 } | |
| 488 #endif | |
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489 |
| 235 | 490 ////////////////////////////////////////////////////////////////////////////// |
| 491 // When calling C code from ASM context, the data stack pointer and | |
| 492 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
| 493 | |
| 494 #ifdef CROSS_COMPILE | |
| 495 # define RESET_C_STACK | |
| 496 #else | |
| 497 # ifdef __DEBUG | |
| 498 # define RESET_C_STACK fillDataStack(); | |
| 499 void fillDataStack(void) | |
| 500 { | |
| 501 _asm | |
| 502 LFSR 1,C_STACK | |
| 503 MOVLW 0xCC | |
| 504 loop: MOVWF POSTINC1,0 | |
| 505 TSTFSZ FSR1L,0 | |
| 506 BRA loop | |
| 507 | |
| 508 LFSR 1,C_STACK | |
| 509 LFSR 2,C_STACK | |
| 510 _endasm | |
| 511 } | |
| 512 # else | |
| 513 # define RESET_C_STACK \ | |
| 514 _asm \ | |
| 515 LFSR 1, C_STACK \ | |
| 516 LFSR 2, C_STACK \ | |
| 517 _endasm | |
| 518 # endif | |
| 519 #endif | |
| 520 | |
| 521 ////////////////////////////////////////////////////////////////////////////// | |
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522 // Read CF values from the C code. |
| 235 | 523 |
| 203 | 524 static short read_custom_function(PARAMETER unsigned char cf) |
| 167 | 525 { |
| 184 | 526 #ifdef CROSS_COMPILE |
| 527 extern unsigned short custom_functions[]; | |
| 528 return custom_functions[cf]; | |
| 529 #else | |
| 167 | 530 extern unsigned char hi, lo; |
| 531 extern void getcustom15(); | |
| 532 _asm | |
| 533 movff cf,WREG | |
| 534 call getcustom15,0 | |
| 535 movff lo,PRODL | |
| 536 movff hi,PRODH | |
| 537 _endasm | |
| 184 | 538 #endif |
| 167 | 539 } |
| 540 | |
| 541 ////////////////////////////////////////////////////////////////////////////// | |
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542 // Fast subroutine to read RTC timer 3. |
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543 // Note: result is in 1/32 of msecs. |
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544 static unsigned short tmr3(void) |
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545 { |
| 261 | 546 #ifndef CROSS_COMPILE |
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547 _asm |
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548 movff 0xfb2,PRODL // TMR3L |
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549 movff 0xfb3,PRODH // TMR3H |
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550 _endasm // result in PRODH:PRODL. |
| 261 | 551 #else |
| 552 return 0; | |
| 553 #endif | |
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554 } |
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555 |
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556 ////////////////////////////////////////////////////////////////////////////// |
| 258 | 557 // read buhlmann tables A and B for compatriment ci |
| 558 // | |
| 559 static void read_buhlmann_coefficients(void) | |
| 165 | 560 { |
| 184 | 561 #ifndef CROSS_COMPILE |
| 167 | 562 // Note: we don't use far rom pointer, because the |
| 563 // 24 bits is to complex, hence we have to set | |
| 564 // the UPPER page ourself... | |
| 565 // --> Set zero if tables are moved to lower pages ! | |
| 566 _asm | |
| 567 movlw 1 | |
| 568 movwf TBLPTRU,0 | |
| 569 _endasm | |
| 184 | 570 #endif |
| 258 | 571 |
| 197 | 572 assert( 0 <= ci && ci < 16 ); |
| 165 | 573 var_N2_a = buhlmann_a[ci]; |
| 574 var_N2_b = buhlmann_b[ci]; | |
| 167 | 575 var_He_a = (buhlmann_a+16)[ci]; |
| 576 var_He_b = (buhlmann_b+16)[ci]; | |
| 577 | |
| 165 | 578 // Check reading consistency: |
| 579 if( (var_N2_a < 0.231) | |
| 580 || (var_N2_a > 1.27) | |
| 581 || (var_N2_b < 0.504) | |
| 582 || (var_N2_b > 0.966) | |
| 583 || (var_He_a < 0.510) | |
| 584 || (var_He_a > 1.75) | |
| 585 || (var_He_b < 0.423) | |
| 586 || (var_He_b > 0.927) | |
| 587 ) | |
| 258 | 588 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; |
| 589 } | |
| 590 | |
| 591 ////////////////////////////////////////////////////////////////////////////// | |
| 592 // read buhlmann tables for compatriment ci | |
| 593 // If period == 0 : 2sec interval | |
| 594 // 1 : 1 min interval | |
| 595 // 2 : 10 min interval. | |
| 596 static void read_buhlmann_times(PARAMETER char period) | |
| 597 { | |
| 598 #ifndef CROSS_COMPILE | |
| 599 // Note: we don't use far rom pointer, because the | |
| 600 // 24 bits is to complex, hence we have to set | |
| 601 // the UPPER page ourself... | |
| 602 // --> Set zero if tables are moved to lower pages ! | |
| 603 _asm | |
| 604 movlw 1 | |
| 605 movwf TBLPTRU,0 | |
| 606 _endasm | |
| 607 #endif | |
| 608 assert( 0 <= ci && ci < 16 ); | |
| 609 | |
| 165 | 610 // Integration intervals. |
| 167 | 611 switch(period) |
| 165 | 612 { |
| 613 case 0: //---- 2 sec ----------------------------------------------------- | |
| 614 var_N2_e = e2secs[ci]; | |
| 167 | 615 var_He_e = (e2secs+16)[ci]; |
| 165 | 616 |
| 617 // Check reading consistency: | |
| 618 if( (var_N2_e < 0.0000363) | |
| 619 || (var_N2_e > 0.00577) | |
| 620 || (var_He_e < 0.0000961) | |
| 621 || (var_He_e > 0.150) | |
| 622 ) | |
| 623 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 624 | |
| 625 break; | |
| 626 | |
| 627 case 1: //---- 1 min ----------------------------------------------------- | |
| 628 var_N2_e = e1min[ci]; | |
| 167 | 629 var_He_e = (e1min+16)[ci]; |
| 165 | 630 |
| 631 // Check reading consistency: | |
| 632 if( (var_N2_e < 1.09E-3) | |
| 633 || (var_N2_e > 0.1592) | |
| 634 || (var_He_e < 0.00288) | |
| 635 || (var_He_e > 0.3682) | |
| 636 ) | |
| 637 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 638 | |
| 639 break; | |
| 640 | |
| 641 case 2: //---- 10 min ---------------------------------------------------- | |
| 642 var_N2_e = e10min[ci]; | |
| 167 | 643 var_He_e = (e10min+16)[ci]; |
| 165 | 644 |
| 645 // Check reading consistency: | |
| 646 if( (var_N2_e < 0.01085) | |
| 647 || (var_N2_e > 0.82323) | |
| 648 || (var_He_e < 0.02846) | |
| 649 || (var_He_e > 0.98986) | |
| 650 ) | |
| 651 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
| 652 | |
| 653 break; | |
| 197 | 654 |
| 655 default: | |
| 656 assert(0); // Never go there... | |
| 165 | 657 } |
| 658 } | |
| 659 | |
| 660 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 661 // calc_next_decodepth_GF |
| 165 | 662 // |
| 116 | 663 // new in v.102 |
| 165 | 664 // |
| 116 | 665 // INPUT, changing during dive: |
| 192 | 666 // low_depth |
| 167 | 667 // |
| 116 | 668 // INPUT, fixed during dive: |
| 167 | 669 // pres_surface |
| 670 // GF_delta | |
| 671 // GF_high | |
| 672 // GF_low | |
| 171 | 673 // char_I_depth_last_deco |
| 167 | 674 // float_deco_distance |
| 675 // | |
| 241 | 676 // RETURN TRUE iff a stop is needed. |
| 677 // | |
| 116 | 678 // OUTPUT |
| 171 | 679 // locked_GF_step |
| 167 | 680 // temp_depth_limt |
| 192 | 681 // low_depth |
| 167 | 682 // |
| 241 | 683 static unsigned char calc_nextdecodepth(void) |
| 167 | 684 { |
| 241 | 685 //--- Max ascent speed --------------------------------------------------- |
| 686 // Recompute leading gas limit, at current depth: | |
| 687 overlay float depth = (temp_deco - pres_surface) / 0.09985; | |
| 688 | |
| 689 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
| 302 | 690 overlay float min_depth = (depth > 10.0) ? (depth - 10.0) : 0.0; |
| 241 | 691 |
| 692 // Do we need to stop at current depth ? | |
| 693 overlay unsigned char need_stop = 0; | |
| 694 | |
| 695 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
| 696 | |
| 212 | 697 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
| 116 | 698 if (char_I_deco_model == 1) |
| 699 { | |
| 241 | 700 if( depth >= low_depth ) |
| 192 | 701 sim_limit( GF_low ); |
| 702 else | |
| 703 sim_limit( GF_high - depth * locked_GF_step ); | |
| 704 | |
| 705 // Stops are needed ? | |
| 706 if( sim_lead_tissue_limit > pres_surface ) | |
| 707 { | |
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708 // Compute tolerated depth, for the leading tissue [metre]: |
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709 overlay float depth_tol = (sim_lead_tissue_limit - pres_surface) / 0.09985; |
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710 |
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711 // Deepest stop, in multiples of 3 metres. |
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712 overlay unsigned char first_stop = 3 * (short)(0.99999 + depth_tol * 0.33333 ); |
| 192 | 713 assert( first_stop < 128 ); |
| 171 | 714 |
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715 // Is it a new deepest needed stop ? If yes this is the reference for |
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716 // the varying gradient factor. So reset that: |
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717 if( depth_tol > min_depth && depth_tol > low_depth ) |
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718 { |
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719 // Store the deepest stop depth, as reference for GF_low. |
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720 low_depth = depth_tol; |
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721 locked_GF_step = GF_delta / low_depth; |
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722 } |
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723 |
| 264 | 724 #if defined(__DEBUG) || defined(CROSS_COMPILE) |
| 261 | 725 { |
| 726 // Extra testing code to make sure the first_stop formula | |
| 727 // and rounding provides correct depth: | |
| 728 overlay float pres_stop = first_stop * 0.09985 // Meters to bar | |
| 729 + pres_surface; | |
| 730 | |
| 731 // Keep GF_low until a first stop depth is found: | |
| 732 if( first_stop >= low_depth ) | |
| 733 sim_limit( GF_low ); | |
| 734 else | |
| 735 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 736 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 737 sim_limit( GF_high - first_stop * locked_GF_step ); | |
| 738 | |
| 302 | 739 // upper limit (lowest pressure tolerated), + 1mbar for rounding...: |
| 740 assert( sim_lead_tissue_limit < (pres_stop + 0.001) ); | |
| 261 | 741 } |
| 742 #endif | |
| 743 | |
| 212 | 744 // Apply correction for the shallowest stop. |
| 192 | 745 if( first_stop == 3 ) // new in v104 |
| 746 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
| 171 | 747 |
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748 // Because gradient factor at first_stop might be bigger than at |
| 261 | 749 // current depth, we might ascent a bit more. |
| 750 // Hence, check all stops until one is indeed higher than tolerated presure: | |
| 751 while(first_stop > 0) | |
| 192 | 752 { |
| 753 overlay unsigned char next_stop; // Next index (0..30) | |
| 754 overlay float pres_stop; // Next depth (0m..90m) | |
| 171 | 755 |
| 241 | 756 // Check max speed, or reaching surface. |
| 757 if( first_stop <= min_depth ) | |
| 758 break; | |
| 759 | |
| 760 // So, there is indeed a stop needed: | |
| 761 need_stop = 1; | |
| 762 | |
| 192 | 763 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
| 764 next_stop = 0; | |
| 216 | 765 else if( first_stop == 6 ) |
| 766 next_stop = char_I_depth_last_deco; | |
| 192 | 767 else |
| 768 next_stop = first_stop - 3; // Index of next (upper) stop. | |
| 167 | 769 |
| 241 | 770 pres_stop = next_stop * 0.09985 // Meters to bar |
| 192 | 771 + pres_surface; |
| 772 | |
| 212 | 773 // Keep GF_low until a first stop depth is found: |
| 774 if( next_stop >= low_depth ) | |
| 775 sim_limit( GF_low ); | |
| 776 else | |
| 777 // current GF is GF_high - alpha (GF_high - GF_low) | |
| 778 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
| 779 sim_limit( GF_high - next_stop * locked_GF_step ); | |
| 171 | 780 |
| 192 | 781 // upper limit (lowest pressure tolerated): |
| 782 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
| 783 break; | |
| 784 | |
| 785 // Else, validate that stop and loop... | |
| 786 first_stop = next_stop; | |
| 212 | 787 } |
| 788 | |
| 789 // next stop is the last validated depth found, aka first_stop | |
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790 temp_depth_limit = first_stop; // Stop depth, in metre. |
| 192 | 791 } |
| 171 | 792 else |
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793 temp_depth_limit = 0; // stop depth, in metre. |
| 116 | 794 } |
| 167 | 795 else //---- ZH-L16 model ------------------------------------------------- |
| 116 | 796 { |
| 192 | 797 overlay float pres_gradient; |
| 798 | |
| 799 // Original model | |
| 116 | 800 // optimized in v.101 |
| 171 | 801 // char_I_depth_last_deco included in v.101 |
| 116 | 802 |
| 192 | 803 // Compute sim_lead_tissue_limit too, but just once. |
| 804 sim_limit(1.0); | |
| 805 | |
| 806 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
| 167 | 807 if (pres_gradient >= 0) |
| 116 | 808 { |
| 241 | 809 pres_gradient /= 0.29955; // Bar --> stop number; |
|
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810 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
| 241 | 811 need_stop = 1; // Hit. |
| 812 | |
| 813 // Implement last stop at 4m/5m/6m... | |
| 814 if( temp_depth_limit == 3 ) | |
| 815 temp_depth_limit = char_I_depth_last_deco; | |
| 171 | 816 } |
| 116 | 817 else |
| 241 | 818 temp_depth_limit = 0; |
| 171 | 819 } |
| 212 | 820 |
| 217 | 821 //---- Check gas change -------------------------------------------------- |
| 241 | 822 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
| 823 | |
| 824 return need_stop; | |
| 167 | 825 } |
| 116 | 826 |
| 167 | 827 ////////////////////////////////////////////////////////////////////////////// |
|
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828 // copy_deco_table |
| 167 | 829 // |
|
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830 // Buffer the stops, once computed, so we can continue to display them |
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831 // while computing the next set. |
| 167 | 832 // |
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833 static void copy_deco_table(void) |
| 116 | 834 { |
|
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835 // Copy depth of the first (deepest) stop, because when reversing |
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836 // order, it will be hard to find... |
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837 char_O_first_deco_depth = internal_deco_depth[0] & 0x7F; |
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838 char_O_first_deco_time = internal_deco_time [0]; |
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839 |
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840 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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841 { |
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842 overlay unsigned char x, y; |
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843 |
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844 //---- First: search the first non-null depth |
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845 for(x=31; x != 0; --x) |
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846 if( internal_deco_depth[x] != 0 ) break; |
| 116 | 847 |
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848 //---- Second: copy to output table (in reverse order) |
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849 for(y=0; y<32; y++, --x) |
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850 { |
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851 char_O_deco_depth[y] = internal_deco_depth[x]; |
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852 char_O_deco_time [y] = internal_deco_time [x]; |
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853 |
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854 // Stop only once the last transfer is done. |
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855 if( x == 0 ) break; |
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856 } |
| 116 | 857 |
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858 //---- Third: fill table end with null |
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859 for(y++; y<32; y++) |
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860 { |
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861 char_O_deco_time [y] = 0; |
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862 char_O_deco_depth[y] = 0; |
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863 } |
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864 } |
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865 else //---- Straight copy ------------------------------------------------ |
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866 { |
| 167 | 867 overlay unsigned char x; |
| 868 | |
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869 for(x=0; x<32; x++) |
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870 { |
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871 char_O_deco_depth[x] = internal_deco_depth[x]; |
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872 char_O_deco_time [x] = internal_deco_time [x]; |
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873 } |
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874 } |
| 167 | 875 } |
| 116 | 876 |
| 167 | 877 ////////////////////////////////////////////////////////////////////////////// |
| 116 | 878 // temp_tissue_safety // |
| 167 | 879 // |
| 116 | 880 // outsourced in v.102 |
| 167 | 881 // |
| 882 // Apply safety factors for brand ZH-L16 model. | |
| 883 // | |
| 884 static void temp_tissue_safety(void) | |
| 116 | 885 { |
| 197 | 886 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
| 887 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
| 888 | |
| 167 | 889 if( char_I_deco_model == 0 ) |
| 116 | 890 { |
| 891 if (temp_tissue < 0.0) | |
| 126 | 892 temp_tissue *= float_desaturation_multiplier; |
| 116 | 893 else |
| 126 | 894 temp_tissue *= float_saturation_multiplier; |
| 116 | 895 } |
| 167 | 896 } |
| 116 | 897 |
| 167 | 898 ////////////////////////////////////////////////////////////////////////////// |
| 899 ////////////////////////////////////////////////////////////////////////////// | |
| 116 | 900 // ** THE JUMP-IN CODE ** |
| 901 // ** for the asm code ** | |
| 167 | 902 ////////////////////////////////////////////////////////////////////////////// |
| 903 ////////////////////////////////////////////////////////////////////////////// | |
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904 |
| 167 | 905 ////////////////////////////////////////////////////////////////////////////// |
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906 // Called every 2 seconds during diving. |
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907 // update tissues every time. |
| 184 | 908 // |
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909 // Every 6 seconds (or slower when TTS > 16): |
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910 // - update deco table (char_O_deco_time/depth) with new values. |
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911 // - update ascent time, |
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912 // - set status to zero (so we can check there is new results). |
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913 // |
| 116 | 914 void deco_calc_hauptroutine(void) |
| 915 { | |
|
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916 RESET_C_STACK |
| 116 | 917 calc_hauptroutine(); |
| 918 int_O_desaturation_time = 65535; | |
| 919 } | |
| 920 | |
| 167 | 921 ////////////////////////////////////////////////////////////////////////////// |
| 184 | 922 // Reset decompression model: |
| 923 // + Set all tissues to equilibrium with Air at ambient pressure. | |
| 924 // + Reset last stop to 0m | |
| 925 // + Reset all model output. | |
| 116 | 926 void deco_clear_tissue(void) |
| 927 { | |
|
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928 RESET_C_STACK |
| 116 | 929 clear_tissue(); |
| 930 } | |
| 931 | |
| 167 | 932 ////////////////////////////////////////////////////////////////////////////// |
| 278 | 933 // Called every 1 min during decoplanning. |
| 934 // Update tissues for 1 min. | |
| 935 // | |
| 936 void deco_calc_tissue(void) | |
| 937 { | |
| 938 RESET_C_STACK | |
| 939 calc_hauptroutine_update_tissues(); | |
| 940 } | |
| 941 | |
| 942 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 943 |
| 116 | 944 void deco_calc_wo_deco_step_1_min(void) |
| 945 { | |
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946 RESET_C_STACK |
| 116 | 947 calc_wo_deco_step_1_min(); |
| 948 deco_calc_desaturation_time(); | |
| 949 } | |
| 950 | |
| 167 | 951 ////////////////////////////////////////////////////////////////////////////// |
| 952 | |
| 116 | 953 void deco_debug(void) |
| 954 { | |
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955 RESET_C_STACK |
| 116 | 956 } |
| 957 | |
| 241 | 958 |
| 959 ////////////////////////////////////////////////////////////////////////////// | |
| 960 // Find current gas in the list (if any). | |
| 961 // | |
| 962 // Input: char_I_deco_N2_ratio[] and He, to detect breathed gas. | |
| 963 // | |
| 964 // Output: sim_gas_depth_used | |
| 965 // | |
| 966 static void gas_switch_find_current(void) | |
| 967 { | |
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968 overlay unsigned char j; |
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969 overlay unsigned char N2 = (unsigned char)(N2_ratio * 100 + 0.5); |
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970 overlay unsigned char He = (unsigned char)(He_ratio * 100 + 0.5); |
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971 |
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972 for(j=0; j<5; ++j) |
| 241 | 973 { |
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974 // Make sure to detect if we are already breathing some gas in |
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975 // the current list (happends when first gas do have a depth). |
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976 if( N2 == char_I_deco_N2_ratio[j] |
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977 && He == char_I_deco_He_ratio[j] |
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978 ) |
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979 { |
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980 if( char_I_deco_gas_change[j] ) |
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981 temp_depth_limit = sim_gas_last_depth = char_I_deco_gas_change[j]; |
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982 sim_gas_last_used = j+1; |
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983 break; |
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984 } |
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985 } |
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986 |
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987 // If there is no gas-switch-delay running ? |
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988 if( sim_gas_delay <= sim_dive_mins) |
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989 { |
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990 // Compute current depth: |
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991 overlay unsigned char depth = (unsigned char)((pres_respiration - pres_surface) / 0.09985); |
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992 assert( depth < 130 ); |
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993 |
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994 // And if I'm above the last decostop (with the 3m margin) ? |
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995 if( (sim_gas_last_depth-3) > depth ) |
| 241 | 996 { |
|
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997 for(j=0; j<5; ++j) |
| 241 | 998 { |
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999 // And If I am in the range of a valide stop ? |
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1000 // (again, with the same 3m margin) |
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1001 if( char_I_deco_gas_change[j] |
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1002 && depth <= char_I_deco_gas_change[j] |
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1003 && depth >= (char_I_deco_gas_change[j] - 3) |
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1004 ) |
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1005 { |
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1006 // Then start gas-switch timer there, |
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1007 sim_gas_delay = sim_dive_mins |
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1008 + read_custom_function(55); |
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1009 |
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1010 // And make sure decostop will be recorded at the right depth. |
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1011 temp_depth_limit = char_I_deco_gas_change[j]; |
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1012 break; |
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1013 } |
| 241 | 1014 } |
| 1015 } | |
|
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1016 else |
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1017 // Make clear there is no deay anymore. |
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1018 sim_gas_delay = 0; |
| 241 | 1019 } |
| 1020 } | |
| 1021 | |
| 167 | 1022 ////////////////////////////////////////////////////////////////////////////// |
| 217 | 1023 // Find deepest available gas. |
| 201 | 1024 // |
| 241 | 1025 // Input: temp_depth_limit, |
| 1026 // deco_gas_change[] | |
| 1027 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
| 212 | 1028 // |
| 241 | 1029 // RETURNS TRUE if a stop is needed for gas switch. |
| 1030 // | |
| 1031 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
| 212 | 1032 // |
| 241 | 1033 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
| 1034 // are null), or during the ascent to make sure we are not passing a | |
| 1035 // stop (in which case both can be already set). | |
| 1036 // | |
| 1037 static unsigned char gas_switch_deepest(void) | |
| 201 | 1038 { |
| 241 | 1039 overlay unsigned char switch_deco = 0, switch_last = 0; |
| 201 | 1040 |
| 1041 if (char_I_const_ppO2 == 0) | |
| 1042 { | |
| 225 | 1043 overlay unsigned char j; |
| 1044 | |
| 241 | 1045 // Loop over all enabled gas, to find the deepest one, |
| 1046 // above las gas, but below temp_depth_limit. | |
| 1047 for(j=0; j<5; ++j) | |
| 225 | 1048 { |
| 241 | 1049 // Gas not (yet) allowed ? Skip ! |
| 1050 if( temp_depth_limit > deco_gas_change[j] ) | |
| 1051 continue; | |
| 1052 | |
| 1053 // Gas deeper than the current/previous one ? Skip ! | |
| 1054 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) | |
| 1055 continue; | |
| 1056 | |
| 1057 // First, or deeper ? | |
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1058 if( switch_deco < deco_gas_change[j] ) |
| 241 | 1059 { |
| 1060 switch_deco = deco_gas_change[j]; | |
| 1061 switch_last = j+1; | |
| 1062 } | |
| 225 | 1063 } |
| 201 | 1064 } |
| 1065 | |
| 203 | 1066 // If there is a better gas available |
| 241 | 1067 if( switch_deco ) |
| 201 | 1068 { |
| 241 | 1069 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
| 201 | 1070 |
| 241 | 1071 // Should restart gas-switch delay only when gas do changes... |
| 1072 assert( sim_gas_delay <= sim_dive_mins ); | |
| 217 | 1073 |
| 241 | 1074 sim_gas_last_depth = switch_deco; |
| 1075 sim_gas_last_used = switch_last; | |
| 1076 sim_gas_delay = read_custom_function(55); | |
| 217 | 1077 |
| 241 | 1078 // Apply depth correction ONLY if CF#55 is not null: |
| 1079 if( sim_gas_delay > 0 ) | |
| 225 | 1080 { |
| 241 | 1081 sim_gas_delay += sim_dive_mins; |
| 1082 temp_depth_limit = switch_deco; | |
| 1083 return 1; | |
| 225 | 1084 } |
| 241 | 1085 |
| 1086 return 0; | |
| 217 | 1087 } |
| 1088 | |
| 241 | 1089 sim_gas_delay = 0; |
| 1090 return 0; | |
| 217 | 1091 } |
| 1092 | |
| 1093 ////////////////////////////////////////////////////////////////////////////// | |
| 1094 // Calculate gas switches | |
| 1095 // | |
| 1096 // | |
| 1097 // Input: N2_ratio, He_ratio. | |
| 1098 // sim_gas_last_used | |
| 1099 // | |
| 1100 // Output: calc_N2_ratio, calc_He_ratio | |
| 1101 // | |
| 241 | 1102 static void gas_switch_set(void) |
| 217 | 1103 { |
| 224 | 1104 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
| 217 | 1105 |
| 224 | 1106 if( sim_gas_last_used == 0 ) |
| 1107 { | |
| 1108 calc_N2_ratio = N2_ratio; | |
| 1109 calc_He_ratio = He_ratio; | |
| 1110 } | |
| 1111 else | |
| 1112 { | |
| 1113 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
| 1114 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
| 217 | 1115 } |
| 201 | 1116 |
| 1117 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
| 1118 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
| 1119 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
| 1120 } | |
| 1121 | |
| 1122 ////////////////////////////////////////////////////////////////////////////// | |
| 1123 // | |
| 212 | 1124 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
| 1125 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
| 276 | 1126 // float_deco_distance : security factor. |
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1127 // Water-vapor pressure inside limbs (ppWater). |
| 212 | 1128 // |
| 236 | 1129 // Output: ppN2, ppHe. |
| 212 | 1130 // |
| 1131 static void sim_alveolar_presures(void) | |
| 201 | 1132 { |
| 212 | 1133 overlay float deco_diluent = temp_deco; // new in v.101 |
| 1134 | |
| 276 | 1135 // Take deco offset into account, but not at surface. |
| 1136 // Note: this should be done on ambiant pressure, hence before | |
| 1137 // computing the diluant partial pressure... | |
| 1138 if( deco_diluent > pres_surface ) | |
| 1139 deco_diluent += float_deco_distance; | |
| 1140 | |
| 212 | 1141 //---- CCR mode : deco gas switch ? -------------------------------------- |
| 276 | 1142 if( char_I_const_ppO2 != 0 ) |
| 201 | 1143 { |
| 276 | 1144 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
| 1145 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
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1146 // ppWater in the equations below: |
| 212 | 1147 if( temp_deco > deco_ppO2_change ) |
| 276 | 1148 deco_diluent -= const_ppO2; |
| 201 | 1149 else |
| 276 | 1150 deco_diluent -= deco_ppO2; |
| 1151 deco_diluent /= calc_N2_ratio + calc_He_ratio; | |
| 212 | 1152 |
| 1153 if (deco_diluent > temp_deco) | |
| 1154 deco_diluent = temp_deco; | |
| 201 | 1155 } |
| 1156 | |
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1157 if( deco_diluent > ppWater ) |
| 201 | 1158 { |
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1159 ppN2 = calc_N2_ratio * (deco_diluent - ppWater); |
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1160 ppHe = calc_He_ratio * (deco_diluent - ppWater); |
| 201 | 1161 } |
| 1162 else | |
| 1163 { | |
| 236 | 1164 ppN2 = 0.0; |
| 201 | 1165 ppHe = 0.0; |
| 1166 } | |
| 236 | 1167 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
| 201 | 1168 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
| 1169 } | |
| 1170 | |
| 1171 ////////////////////////////////////////////////////////////////////////////// | |
| 167 | 1172 // clear_tissue |
| 1173 // | |
| 165 | 1174 // optimized in v.101 (var_N2_a) |
| 167 | 1175 // |
| 1176 // preload tissues with standard pressure for the given ambient pressure. | |
| 1177 // Note: fixed N2_ratio for standard air. | |
| 201 | 1178 // |
| 167 | 1179 static void clear_tissue(void) |
| 116 | 1180 { |
| 1181 flag_in_divemode = 0; | |
| 1182 int_O_DBS_bitfield = 0; | |
| 1183 int_O_DBS2_bitfield = 0; | |
| 1184 int_O_DBG_pre_bitfield = 0; | |
| 1185 int_O_DBG_post_bitfield = 0; | |
| 1186 char_O_NDL_at_20mtr = 255; | |
| 1187 | |
| 167 | 1188 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
| 1189 N2_ratio = 0.7902; | |
| 212 | 1190 pres_respiration = int_I_pres_respiration * 0.001; |
| 164 | 1191 |
| 167 | 1192 for(ci=0; ci<16; ci++) |
| 126 | 1193 { |
| 197 | 1194 // cycle through the 16 Bühlmann tissues |
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1195 overlay float p = N2_ratio * (pres_respiration - ppWater); |
| 164 | 1196 pres_tissue[ci] = p; |
| 197 | 1197 |
| 1198 // cycle through the 16 Bühlmann tissues for Helium | |
| 167 | 1199 (pres_tissue+16)[ci] = 0.0; |
| 126 | 1200 } // for 0 to 16 |
| 116 | 1201 |
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1202 clear_deco_table(); |
| 126 | 1203 char_O_deco_status = 0; |
| 1204 char_O_nullzeit = 0; | |
| 168 | 1205 int_O_ascenttime = 0; |
| 126 | 1206 char_O_gradient_factor = 0; |
| 1207 char_O_relative_gradient_GF = 0; | |
| 197 | 1208 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
| 258 | 1209 |
| 1210 calc_lead_tissue_limit = 0.0; | |
| 1211 char_O_gtissue_no = 0; | |
| 167 | 1212 } |
| 116 | 1213 |
| 167 | 1214 ////////////////////////////////////////////////////////////////////////////// |
| 1215 // calc_hauptroutine | |
| 1216 // | |
| 1217 // this is the major code in dive mode calculates: | |
| 116 | 1218 // the tissues, |
| 167 | 1219 // the bottom time, |
| 1220 // and simulates the ascend with all deco stops. | |
| 171 | 1221 // |
| 1222 // The deco_state sequence is : | |
| 1223 // 3 (at surface) | |
| 1224 // +---> 0 : calc nullzeit | |
| 1225 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
| 1226 // | +-> 1 : simulate up to 16min of stops. | |
| 1227 // | +------< not finished | |
| 1228 // +--------< finish | |
| 1229 // | |
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1230 // Added steps 6,5 for @+5 calculation: |
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1231 // 6 = ascent to first stop (same as 2), except continue to 7 |
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1232 // 7 = same as 1, except loop to 7. |
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1233 // |
| 167 | 1234 static void calc_hauptroutine(void) |
| 116 | 1235 { |
| 241 | 1236 static unsigned char backup_gas_used = 0; |
| 1237 static unsigned char backup_gas_depth = 0; | |
| 217 | 1238 static unsigned char backup_gas_delay = 0; |
| 186 | 1239 |
| 116 | 1240 calc_hauptroutine_data_input(); |
| 1241 | |
| 1242 if(!flag_in_divemode) | |
| 1243 { | |
| 1244 flag_in_divemode = 1; | |
| 1245 create_dbs_set_dbg_and_ndl20mtr(); | |
| 1246 } | |
| 1247 else | |
| 1248 check_pre_dbg(); | |
| 1249 | |
| 1250 calc_hauptroutine_update_tissues(); | |
| 1251 calc_gradient_factor(); | |
| 1252 | |
| 167 | 1253 // toggle between calculation for nullzeit (bottom time), |
| 1254 // deco stops | |
| 1255 // and more deco stops (continue) | |
| 1256 switch( char_O_deco_status ) | |
| 116 | 1257 { |
| 186 | 1258 case 3: //---- At surface: start a new dive ------------------------------ |
| 1259 clear_deco_table(); | |
| 1260 copy_deco_table(); | |
| 200 | 1261 int_O_ascenttime = 0; // Reset DTR. |
| 1262 char_O_nullzeit = 0; // Reset bottom time. | |
| 278 | 1263 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
| 201 | 1264 |
| 217 | 1265 // Values that should be reset just once for the full real dive. |
| 1266 // This is used to record the lowest stop for the whole dive, | |
| 1267 // Including ACCROSS all simulated ascent. | |
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1268 low_depth = 0.0; |
| 217 | 1269 |
| 1270 // Reset gas switch history. | |
| 241 | 1271 backup_gas_used = sim_gas_last_used = 0; |
| 1272 backup_gas_depth = sim_gas_last_depth = 0; | |
| 217 | 1273 backup_gas_delay = sim_gas_delay = 0; |
| 203 | 1274 sim_dive_mins = 0; |
| 1275 break; | |
| 186 | 1276 |
| 167 | 1277 case 0: //---- bottom time ----------------------------------------------- |
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1278 default: |
| 167 | 1279 calc_nullzeit(); |
| 1280 check_ndl(); | |
| 186 | 1281 char_O_deco_status = 2; // calc ascent next time. |
| 1282 break; | |
| 1283 | |
| 1284 case 2: //---- Simulate ascent to first stop ----------------------------- | |
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1285 case 6: // @+5min variation |
| 203 | 1286 // Check proposed gas at begin of ascent simulation |
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1287 sim_dive_mins = int_I_divemins; // Init current time. |
| 241 | 1288 |
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1289 gas_switch_find_current(); // Lookup for current gas & time. |
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1290 gas_switch_set(); // setup calc_ratio's |
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1291 |
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1292 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1293 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
| 203 | 1294 backup_gas_delay = sim_gas_delay; |
| 186 | 1295 |
| 1296 sim_ascent_to_first_stop(); | |
| 201 | 1297 |
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1298 // Calc stops next time (deco or gas switch). |
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1299 char_O_deco_status = 1 | ( char_O_deco_status & 4 ); |
| 167 | 1300 break; |
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1301 |
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1302 case 1: //---- Simulate stops -------------------------------------------- |
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1303 case 5: // @+5 variation. |
| 167 | 1304 calc_hauptroutine_calc_deco(); |
| 186 | 1305 |
| 1306 // If simulation is finished, restore the GF low reference, so that | |
| 1307 // next ascent simulation is done from the current depth: | |
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1308 if( (char_O_deco_status & 3) == 0 ) |
| 186 | 1309 { |
| 241 | 1310 sim_gas_last_used = backup_gas_used; |
| 1311 sim_gas_last_depth = backup_gas_depth; | |
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1312 sim_gas_delay = backup_gas_delay; |
| 186 | 1313 } |
| 167 | 1314 break; |
| 116 | 1315 } |
| 167 | 1316 |
| 116 | 1317 check_post_dbg(); |
| 1318 } | |
| 1319 | |
| 167 | 1320 ////////////////////////////////////////////////////////////////////////////// |
| 1321 // calc_hauptroutine_data_input | |
| 1322 // | |
| 1323 // Reset all C-code dive parameters from their ASM-code values. | |
| 1324 // Detect gas change condition. | |
| 1325 // | |
| 116 | 1326 void calc_hauptroutine_data_input(void) |
| 1327 { | |
| 203 | 1328 overlay short int_temp; |
| 126 | 1329 |
| 197 | 1330 pres_respiration = int_I_pres_respiration * 0.001; |
| 1331 pres_surface = int_I_pres_surface * 0.001; | |
| 1332 N2_ratio = char_I_N2_ratio * 0.01; | |
| 1333 He_ratio = char_I_He_ratio * 0.01; | |
| 1334 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
| 116 | 1335 |
| 126 | 1336 // ____________________________________________________ |
| 1337 // | |
| 1338 // _____________ G A S _ C H A N G E S ________________ | |
| 1339 // ____________________________________________________ | |
| 1340 | |
| 212 | 1341 // Keep a margin of 150mbar = 1.50m |
| 1342 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
| 1343 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
| 126 | 1344 |
| 225 | 1345 deco_gas_change[0] = 0; |
| 1346 deco_gas_change[1] = 0; | |
| 1347 deco_gas_change[2] = 0; | |
| 1348 deco_gas_change[3] = 0; | |
| 1349 deco_gas_change[4] = 0; | |
| 116 | 1350 |
| 203 | 1351 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1352 if(char_I_deco_gas_change[0]) |
| 126 | 1353 { |
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1354 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
| 225 | 1355 deco_gas_change[0] = char_I_deco_gas_change[0]; |
| 126 | 1356 } |
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1357 if(char_I_deco_gas_change[1]) |
| 126 | 1358 { |
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1359 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
| 225 | 1360 deco_gas_change[1] = char_I_deco_gas_change[1]; |
| 126 | 1361 } |
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1362 if(char_I_deco_gas_change[2]) |
| 126 | 1363 { |
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1364 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
| 225 | 1365 deco_gas_change[2] = char_I_deco_gas_change[2]; |
| 126 | 1366 } |
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1367 if(char_I_deco_gas_change[3]) |
| 126 | 1368 { |
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1369 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
| 225 | 1370 deco_gas_change[3] = char_I_deco_gas_change[3]; |
| 126 | 1371 } |
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1372 if(char_I_deco_gas_change[4]) |
| 126 | 1373 { |
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1374 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
| 225 | 1375 deco_gas_change[4] = char_I_deco_gas_change[4]; |
| 126 | 1376 } |
| 116 | 1377 |
| 197 | 1378 const_ppO2 = char_I_const_ppO2 * 0.01; |
| 307 | 1379 deco_ppO2_change = char_I_deco_ppO2_change / 99.85 |
| 197 | 1380 + pres_surface |
| 1381 + float_deco_distance; | |
| 1382 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
| 1383 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
| 1384 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
| 1385 GF_low = char_I_GF_Low_percentage * 0.01; | |
| 1386 GF_high = char_I_GF_High_percentage * 0.01; | |
| 126 | 1387 GF_delta = GF_high - GF_low; |
| 116 | 1388 } |
| 1389 | |
| 167 | 1390 ////////////////////////////////////////////////////////////////////////////// |
| 171 | 1391 // |
| 1392 // | |
| 116 | 1393 void calc_hauptroutine_update_tissues(void) |
| 1394 { | |
| 197 | 1395 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
| 1396 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
| 1397 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
| 237 | 1398 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1399 |
| 276 | 1400 pres_diluent = pres_respiration; |
| 307 | 1401 if( char_I_const_ppO2 != 0 ) // new in v.101 |
| 186 | 1402 { |
| 276 | 1403 pres_diluent -= const_ppO2; // new in v.101 |
| 1404 pres_diluent /= N2_ratio + He_ratio; // new in v.101 | |
| 1405 if( pres_diluent > pres_respiration ) // new in v.101 | |
| 1406 pres_diluent = pres_respiration; // new in v.101 | |
| 307 | 1407 |
| 1408 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0 + 0.5); | |
| 1409 char_O_diluent_ppO2 = (char)(pres_diluent * (1.0 - N2_ratio - He_ratio) * 100.0 + 0.5); | |
| 186 | 1410 } |
| 307 | 1411 |
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1412 if( pres_diluent > ppWater ) // new in v.101 |
| 116 | 1413 { |
| 307 | 1414 overlay float EAD, END; |
| 1415 | |
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1416 ppN2 = N2_ratio * (pres_diluent - ppWater); // changed in v.101 |
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1417 ppHe = He_ratio * (pres_diluent - ppWater); // changed in v.101 |
| 307 | 1418 |
| 1419 // EAD : Equivalent Air Dive. Equivalent depth for the same N2 level | |
| 1420 // with plain air. | |
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1421 // ppN2 = 79% * (P_EAD - ppWater) |
| 307 | 1422 // EAD = (P_EAD - Psurface) * 10 |
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1423 // ie: EAD = (ppN2 / 0.7902 + ppWater -Psurface) * 10 |
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1424 EAD = (ppN2 / 0.7902 + ppWater - pres_surface) * 9.985; |
| 307 | 1425 if( EAD < 0.0 || EAD > 245.5 ) EAD = 0.0; |
| 1426 char_O_EAD = (char)(EAD + 0.5); | |
| 1427 | |
| 1428 // END : Equivalent Narcotic Dive. | |
| 1429 // Here we count O2 as narcotic too. Hence everything but helium (has a narcosis factor of | |
| 1430 // 0.23 btw). Hence the formula becomes: | |
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1431 // END * BarPerMeter * (1.0 - 0.0) - ppWater + Psurface == Pambient - ppHe - ppWater |
| 307 | 1432 // ie: END = (Pambient - ppHe - Psurface) * 9.985 |
| 1433 // | |
| 1434 // Source cited: | |
| 1435 // The Physiology and Medicine of Diving by Peter Bennett and David Elliott, | |
| 1436 // 4th edition, 1993, W.B.Saunders Company Ltd, London. | |
| 1437 END = (pres_respiration - ppHe - pres_surface) * 9.985; | |
| 1438 if( END < 0.0 || END > 245.5 ) END = 0.0; | |
| 1439 char_O_END = (char)(END + 0.5); | |
| 116 | 1440 } |
| 167 | 1441 else // new in v.101 |
| 116 | 1442 { |
| 236 | 1443 ppN2 = 0.0; // new in v.101 |
| 200 | 1444 ppHe = 0.0; // new in v.101 |
| 307 | 1445 char_O_EAD = char_O_END = 0; |
| 116 | 1446 } |
| 1447 | |
| 1448 if(!char_I_step_is_1min) | |
| 192 | 1449 calc_tissue(0); |
| 116 | 1450 else |
| 192 | 1451 calc_tissue(1); |
| 186 | 1452 |
| 192 | 1453 // Calc limit for surface, ie. GF_high. |
| 258 | 1454 calc_limit(); |
| 186 | 1455 |
| 203 | 1456 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
| 1457 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
| 192 | 1458 |
| 1459 // if guiding tissue can not be exposed to surface pressure immediately | |
| 1460 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
| 116 | 1461 { |
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1462 char_O_nullzeit = 0; // deco necessary |
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1463 char_O_deco_status = 2; // calculate ascent on next iteration. |
| 116 | 1464 } |
| 171 | 1465 } |
| 1466 | |
| 116 | 1467 |
| 167 | 1468 ////////////////////////////////////////////////////////////////////////////// |
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1469 // Compute stops. |
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1470 // |
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1471 // Note: because this can be very long, break on 16 iterations, and set state |
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1472 // to 0 when finished, or to 1 when needing to continue. |
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1473 // Note: because this might be very long (~ 66 ms by iteration in 1.84beta), |
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1474 // break the loop when total time > 512msec. |
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1475 // |
| 116 | 1476 void calc_hauptroutine_calc_deco(void) |
| 1477 { | |
|
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1478 overlay unsigned char loop; |
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1479 |
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1480 for(loop = 0; loop < 16; ++loop) |
| 116 | 1481 { |
|
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1482 // Limit loops to 512ms, using the RTC timer 3: |
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1483 if( tmr3() & (512*32) ) |
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1484 break; |
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1485 |
| 241 | 1486 // Do not ascent while doing a gas switch ? |
| 203 | 1487 if( sim_gas_delay <= sim_dive_mins ) |
| 1488 { | |
| 241 | 1489 if( calc_nextdecodepth() ) |
| 1490 { | |
| 1491 if( temp_depth_limit == 0 ) | |
| 1492 goto Surface; | |
| 116 | 1493 |
| 241 | 1494 //---- We hit a stop at temp_depth_limit --------------------- |
| 1495 temp_deco = temp_depth_limit * 0.09985 // Convert to relative bar, | |
| 1496 + pres_surface; // To absolute. | |
| 1497 update_deco_table(); // Adds a one minute stops. | |
| 1498 } | |
| 1499 else | |
| 1500 { | |
| 1501 //---- No stop ----------------------------------------------- | |
| 1502 temp_deco -= 0.9985; // Ascend 10m, no wait. | |
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1503 |
| 241 | 1504 //---- Finish computations once surface is reached ----------- |
| 1505 if( temp_deco <= pres_surface ) | |
| 1506 { | |
| 1507 Surface: | |
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1508 if( char_O_deco_status == 1 ) // Don't in @+5min variant. |
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1509 copy_deco_table(); |
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1510 |
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1511 calc_ascenttime(); |
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1512 char_O_deco_status = 0; // calc nullzeit next time. |
| 278 | 1513 char_O_deco_last_stop = 0; // Surface reached. |
| 241 | 1514 return; |
| 1515 } | |
| 1516 } | |
| 212 | 1517 } |
| 1518 else | |
| 241 | 1519 update_deco_table(); // Just pass one minute. |
| 197 | 1520 |
| 241 | 1521 //---- Then update tissue -------------------------------------------- |
| 203 | 1522 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1523 gas_switch_set(); // Apply any simulated gas change, once validated. |
| 212 | 1524 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
| 192 | 1525 sim_tissue(1); // Simulate compartiments for 1 minute. |
| 116 | 1526 } |
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1527 |
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1528 // Surface not reached, need more stops... |
| 278 | 1529 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
| 116 | 1530 } |
| 1531 | |
| 167 | 1532 ////////////////////////////////////////////////////////////////////////////// |
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1533 // Simulation ascention to first deco stop. |
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1534 // |
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1535 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1536 // there is no need to break on more that 16 iterations |
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1537 // (or we are already in deep shit). |
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1538 // |
|
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1539 // if char_O_deco_status indicate @+5 variant, add extra time at current depth, |
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1540 // before ascent. |
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1541 void sim_ascent_to_first_stop(void) |
| 116 | 1542 { |
| 171 | 1543 update_startvalues(); |
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1544 clear_deco_table(); |
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1545 |
| 200 | 1546 temp_deco = pres_respiration; // Starts from current real depth. |
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1547 |
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1548 // Are we doing the special @+5min variation ? |
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1549 if(char_O_deco_status & 4) |
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1550 sim_extra_time(); |
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1551 |
| 212 | 1552 // Do we have a gas switch going on ? |
| 1553 if( sim_gas_delay > sim_dive_mins ) | |
| 1554 return; | |
| 1555 | |
| 241 | 1556 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1557 for(;;) |
| 116 | 1558 { |
| 241 | 1559 // Try ascending 1 full minute. |
| 1560 temp_deco -= 0.9985; // 1 min, at 10m/min. ~ 1bar. | |
| 203 | 1561 |
| 212 | 1562 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
| 1563 sim_limit(GF_low); | |
| 1564 | |
| 1565 // Did we reach deepest remaining stop ? | |
| 241 | 1566 if( temp_deco < sim_lead_tissue_limit ) |
| 212 | 1567 { |
| 241 | 1568 temp_deco += 0.9985; // Restore last correct depth, |
| 1569 break; // End fast ascent. | |
| 212 | 1570 } |
| 1571 | |
| 203 | 1572 // Did we reach surface ? |
| 1573 if( temp_deco <= pres_surface ) | |
| 1574 { | |
| 1575 temp_deco = pres_surface; // Yes: finished ! | |
| 1576 break; | |
| 1577 } | |
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1578 |
| 241 | 1579 // Check for gas change below new depth ? |
| 1580 temp_depth_limit = (temp_deco - pres_surface) / 0.09985; | |
| 1581 | |
| 1582 if( gas_switch_deepest() ) | |
| 1583 { | |
| 1584 temp_deco = temp_depth_limit * 0.09985 + pres_surface; | |
| 212 | 1585 break; |
| 241 | 1586 } |
| 171 | 1587 |
| 203 | 1588 sim_dive_mins++; // Advance simulated time by 1 minute. |
| 241 | 1589 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
| 203 | 1590 sim_tissue(1); // and update tissues for 1 min. |
| 1591 } | |
| 167 | 1592 } |
| 116 | 1593 |
| 167 | 1594 ////////////////////////////////////////////////////////////////////////////// |
|
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1595 // Simulation extra time at the current depth. |
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1596 // |
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1597 // This routine is used for @+5min feature. |
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1598 void sim_extra_time(void) |
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1599 { |
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1600 overlay unsigned char extra = read_custom_function(58); |
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1601 do { |
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1602 sim_dive_mins++; // Advance simulated time by 1 minute. |
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1603 sim_tissue(1); // and update tissues for 1 min. |
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1604 } while( --extra != 0 ); |
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1605 } |
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1606 |
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1607 ////////////////////////////////////////////////////////////////////////////// |
| 167 | 1608 // calc_tissue |
| 1609 // | |
| 116 | 1610 // optimized in v.101 |
| 167 | 1611 // |
| 184 | 1612 static void calc_tissue(PARAMETER unsigned char period) |
| 116 | 1613 { |
| 251 | 1614 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1615 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1616 |
| 126 | 1617 for (ci=0;ci<16;ci++) |
| 1618 { | |
| 258 | 1619 read_buhlmann_times(period); // 2 sec or 1 min period. |
| 116 | 1620 |
| 126 | 1621 // N2 |
| 236 | 1622 temp_tissue = (ppN2 - pres_tissue[ci]) * var_N2_e; |
| 126 | 1623 temp_tissue_safety(); |
| 167 | 1624 pres_tissue[ci] += temp_tissue; |
| 165 | 1625 |
| 126 | 1626 // He |
| 200 | 1627 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1628 temp_tissue_safety(); |
| 167 | 1629 (pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1630 } |
| 167 | 1631 } |
| 116 | 1632 |
| 167 | 1633 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1634 // calc_limit |
| 167 | 1635 // |
| 192 | 1636 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
| 167 | 1637 // |
| 258 | 1638 static void calc_limit(void) |
| 167 | 1639 { |
| 192 | 1640 char_O_gtissue_no = 255; |
| 1641 calc_lead_tissue_limit = 0.0; | |
| 1642 | |
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1643 for(ci=0; ci<16;ci++) |
| 192 | 1644 { |
|
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1645 overlay float N2 = pres_tissue[ci]; |
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1646 overlay float He = (pres_tissue+16)[ci]; |
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1647 overlay float p = N2 + He; |
| 192 | 1648 |
| 258 | 1649 read_buhlmann_coefficients(); |
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1650 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1651 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
| 116 | 1652 |
| 192 | 1653 // Apply the Eric Baker's varying gradient factor correction. |
| 1654 // Note: the correction factor depends both on GF and b, | |
| 1655 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1656 // so that can change who is the leading gas... | |
| 1657 // Note: Also depends of the GF. So the calcul is different for | |
| 1658 // GF_low, current GF, or GF_high... | |
| 1659 // *BUT* calc_tissue() is used to compute bottom time, | |
| 1660 // hence what would happend at surface, | |
| 1661 // hence at GF_high. | |
| 1662 if( char_I_deco_model == 1 ) | |
| 258 | 1663 p = ( p - var_N2_a * GF_high) * var_N2_b |
| 1664 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
| 192 | 1665 else |
| 1666 p = (p - var_N2_a) * var_N2_b; | |
| 258 | 1667 if( p < 0.0 ) p = 0.0; |
| 192 | 1668 |
| 1669 if( p > calc_lead_tissue_limit ) | |
| 1670 { | |
| 1671 char_O_gtissue_no = ci; | |
| 1672 calc_lead_tissue_limit = p; | |
| 1673 } | |
| 1674 } | |
| 197 | 1675 |
| 1676 assert( char_O_gtissue_no < 16 ); | |
| 1677 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
| 167 | 1678 } |
| 1679 | |
| 1680 ////////////////////////////////////////////////////////////////////////////// | |
| 1681 // calc_nullzeit | |
| 1682 // | |
| 1683 // calculates the remaining bottom time | |
| 1684 // | |
| 1685 // unchanged in v.101 | |
| 1686 // | |
| 1687 static void calc_nullzeit(void) | |
| 1688 { | |
| 203 | 1689 overlay unsigned char loop; |
| 200 | 1690 update_startvalues(); |
| 167 | 1691 |
| 116 | 1692 char_O_nullzeit = 0; |
| 167 | 1693 for(loop = 1; loop <= 17; loop++) |
| 116 | 1694 { |
| 1695 backup_sim_pres_tissue(); | |
| 197 | 1696 sim_tissue(2); // 10 min. |
| 192 | 1697 sim_limit(GF_high); |
| 167 | 1698 |
| 192 | 1699 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
| 185 | 1700 { |
| 1701 restore_sim_pres_tissue(); | |
| 1702 break; | |
| 1703 } | |
| 1704 // Validate once we know its good. | |
| 1705 char_O_nullzeit += 10; | |
| 167 | 1706 } |
| 1707 | |
| 116 | 1708 if (char_O_nullzeit < 60) |
| 1709 { | |
| 167 | 1710 for(loop=1; loop <= 10; loop++) |
| 116 | 1711 { |
| 197 | 1712 sim_tissue(1); // 1 min |
| 192 | 1713 sim_limit(GF_high); |
| 1714 | |
| 1715 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
| 185 | 1716 break; |
| 1717 char_O_nullzeit++; | |
| 167 | 1718 } |
| 185 | 1719 } |
| 1720 } | |
| 116 | 1721 |
| 167 | 1722 ////////////////////////////////////////////////////////////////////////////// |
| 1723 // backup_sim_pres_tissue | |
| 1724 // | |
| 116 | 1725 void backup_sim_pres_tissue(void) |
| 1726 { | |
| 167 | 1727 overlay unsigned char x; |
| 1728 | |
| 1729 for(x = 0; x<32; x++) | |
| 126 | 1730 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
| 167 | 1731 } |
| 116 | 1732 |
| 167 | 1733 ////////////////////////////////////////////////////////////////////////////// |
| 1734 // restore_sim_pres_tissue | |
| 1735 // | |
| 116 | 1736 void restore_sim_pres_tissue(void) |
| 1737 { | |
| 167 | 1738 overlay unsigned char x; |
| 1739 | |
| 1740 for(x = 0; x<32; x++) | |
| 126 | 1741 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
| 167 | 1742 } |
| 116 | 1743 |
| 167 | 1744 ////////////////////////////////////////////////////////////////////////////// |
| 1745 // calc_ascenttime | |
| 1746 // | |
|
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1747 // Summup ascent from bottom to surface, at 1 bar/min, 1min for last 3 meters, |
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1748 // and all stops. |
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1749 // |
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1750 // Result in int_O_ascenttime, or int_O_extra_ascenttime if in @+5min variant. |
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1751 static void calc_ascenttime(void) |
| 116 | 1752 { |
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1753 if( pres_respiration > pres_surface ) |
| 126 | 1754 { |
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1755 overlay unsigned char x; |
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1756 overlay unsigned short sum; |
| 168 | 1757 |
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1758 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
| 192 | 1759 overlay float ascent = pres_respiration - pres_surface + 0.7; |
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1760 if (ascent < 0.0) |
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1761 ascent = 0.0; |
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1762 sum = (unsigned short)(ascent + 0.99); |
| 168 | 1763 |
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1764 for(x=0; x<32 && internal_deco_depth[x]; x++) |
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1765 sum += (unsigned short)internal_deco_time[x]; |
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1766 |
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1767 if( char_O_deco_status == 1 ) |
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1768 int_O_ascenttime = sum; |
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1769 else |
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1770 int_O_extra_ascenttime = sum; |
| 126 | 1771 } |
| 1772 else | |
| 168 | 1773 int_O_ascenttime = 0; |
| 167 | 1774 } |
| 116 | 1775 |
| 167 | 1776 ////////////////////////////////////////////////////////////////////////////// |
| 1777 // update_startvalues | |
| 1778 // | |
| 116 | 1779 // updated in v.102 |
| 167 | 1780 // |
| 116 | 1781 void update_startvalues(void) |
| 1782 { | |
| 167 | 1783 overlay unsigned char x; |
| 116 | 1784 |
| 201 | 1785 // Start ascent simulation with current tissue partial pressures. |
| 116 | 1786 for (x = 0;x<16;x++) |
| 1787 { | |
| 1788 sim_pres_tissue[x] = pres_tissue[x]; | |
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1789 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
| 116 | 1790 } |
| 197 | 1791 |
| 201 | 1792 // No leading tissue (yet) for this ascent simulation. |
| 197 | 1793 sim_lead_tissue_limit = 0.0; |
| 1794 sim_lead_tissue_no = 255; | |
| 167 | 1795 } |
| 116 | 1796 |
| 167 | 1797 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1798 // sim_tissue |
| 167 | 1799 // |
| 116 | 1800 // optimized in v.101 |
| 167 | 1801 // |
| 1802 // Function very simular to calc_tissue, but: | |
| 1803 // + Use a 1min or 10min period. | |
| 1804 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
| 184 | 1805 static void sim_tissue(PARAMETER unsigned char period) |
| 116 | 1806 { |
| 251 | 1807 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
| 1808 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
| 236 | 1809 |
| 192 | 1810 for(ci=0; ci<16; ci++) |
| 126 | 1811 { |
| 258 | 1812 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
| 165 | 1813 |
| 126 | 1814 // N2 |
| 236 | 1815 temp_tissue = (ppN2 - sim_pres_tissue[ci]) * var_N2_e; |
| 126 | 1816 temp_tissue_safety(); |
| 167 | 1817 sim_pres_tissue[ci] += temp_tissue; |
| 126 | 1818 |
| 1819 // He | |
| 200 | 1820 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
| 126 | 1821 temp_tissue_safety(); |
| 167 | 1822 (sim_pres_tissue+16)[ci] += temp_tissue; |
| 192 | 1823 } |
| 167 | 1824 } |
| 116 | 1825 |
| 167 | 1826 ////////////////////////////////////////////////////////////////////////////// |
| 192 | 1827 // sim_limit() |
| 1828 // | |
| 1829 // New in v.111 | |
| 1830 // | |
| 1831 // Function separated from sim_tissue() to allow recomputing limit on | |
| 1832 // different depth, because it depends on current gradient factor. | |
| 167 | 1833 // |
| 192 | 1834 static void sim_limit(PARAMETER float GF_current) |
| 116 | 1835 { |
| 212 | 1836 assert( 0.0 < GF_current && GF_current <= 1.0f); |
| 1837 | |
| 192 | 1838 sim_lead_tissue_limit = 0.0; |
| 212 | 1839 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
| 192 | 1840 |
| 1841 for(ci=0; ci<16; ci++) | |
| 1842 { | |
| 241 | 1843 overlay float N2 = sim_pres_tissue[ci]; |
| 1844 overlay float He = (sim_pres_tissue+16)[ci]; | |
| 1845 overlay float p = N2 + He; | |
| 192 | 1846 |
| 258 | 1847 read_buhlmann_coefficients(); |
| 241 | 1848 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
| 1849 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
| 192 | 1850 |
| 1851 // Apply the Eric Baker's varying gradient factor correction. | |
| 1852 // Note: the correction factor depends both on GF and b, | |
| 1853 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
| 1854 // so that can change who is the leading gas... | |
| 1855 // Note: Also depends of the GF_current... | |
| 1856 if( char_I_deco_model == 1 ) | |
| 302 | 1857 p = ( p - var_N2_a * GF_current) |
| 1858 / (GF_current / var_N2_b + 1.0 - GF_current); | |
| 192 | 1859 else |
| 1860 p = (p - var_N2_a) * var_N2_b; | |
| 237 | 1861 if( p < 0.0 ) p = 0.0; |
| 192 | 1862 |
| 1863 if( p > sim_lead_tissue_limit ) | |
| 1864 { | |
| 1865 sim_lead_tissue_no = ci; | |
| 1866 sim_lead_tissue_limit = p; | |
| 1867 } | |
| 1868 } // for ci | |
| 197 | 1869 |
| 1870 assert( sim_lead_tissue_no < 16 ); | |
| 237 | 1871 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
| 167 | 1872 } |
| 116 | 1873 |
| 167 | 1874 ////////////////////////////////////////////////////////////////////////////// |
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1875 // clear_deco_table |
| 167 | 1876 // |
| 1877 // unchanged in v.101 | |
| 1878 // | |
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1879 static void clear_deco_table(void) |
| 116 | 1880 { |
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1881 overlay unsigned char x; |
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1882 |
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1883 for(x=0; x<32; ++x) |
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1884 { |
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1885 internal_deco_time [x] = 0; |
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1886 internal_deco_depth[x] = 0; |
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1887 } |
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1888 } |
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1889 |
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1890 ////////////////////////////////////////////////////////////////////////////// |
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1891 // update_deco_table |
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1892 // |
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1893 // Add 1 min to current stop. |
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1894 // |
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1895 // Inputs: |
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1896 // temp_depth_limit = stop's depth, in meters. |
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1897 // In/Out: |
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1898 // internal_deco_depth[] : depth (in metres) of each stops. |
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1899 // internal_deco_time [] : time (in minutes) of each stops. |
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1900 // |
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1901 static void update_deco_table() |
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1902 { |
| 192 | 1903 overlay unsigned char x; |
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1904 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1905 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1906 |
| 192 | 1907 for(x=0; x<32; ++x) |
| 1908 { | |
| 212 | 1909 // Make sure deco-stops are recorded in order: |
| 1910 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
| 1911 | |
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1912 if( (internal_deco_depth[x] & 0x7F) == temp_depth_limit ) |
| 192 | 1913 { |
| 1914 // Do not overflow (max 255') | |
| 1915 if( internal_deco_time[x] < 255 ) | |
| 1916 { | |
| 1917 internal_deco_time[x]++; | |
| 1918 return; | |
| 1919 } | |
| 1920 // But store extra in the next stop... | |
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1921 } |
| 192 | 1922 |
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1923 if( internal_deco_depth[x] == 0 ) |
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1924 { |
| 192 | 1925 internal_deco_depth[x] = temp_depth_limit; |
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1926 if( sim_gas_delay > sim_dive_mins ) |
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1927 internal_deco_depth[x] |= 0x80; |
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1928 |
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1929 internal_deco_time[x] = 1; |
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1930 return; |
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1931 } |
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1932 } |
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1933 |
| 192 | 1934 // Can't store stops at more than 96m. |
| 1935 // Or stops at less that 3m too. | |
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1936 // Just do nothing with that... |
| 167 | 1937 } |
| 116 | 1938 |
| 167 | 1939 ////////////////////////////////////////////////////////////////////////////// |
| 1940 // calc_gradient_factor | |
| 1941 // | |
| 165 | 1942 // optimized in v.101 (var_N2_a) |
| 116 | 1943 // new code in v.102 |
| 167 | 1944 // |
| 1945 static void calc_gradient_factor(void) | |
| 116 | 1946 { |
| 197 | 1947 overlay float gf; |
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1948 overlay float N2 = pres_tissue[char_O_gtissue_no]; |
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1949 overlay float He = (pres_tissue+16)[char_O_gtissue_no]; |
| 237 | 1950 |
| 197 | 1951 assert( char_O_gtissue_no < 16 ); |
| 237 | 1952 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
| 197 | 1953 |
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1954 // tissue > respiration (currently off-gasing) |
| 302 | 1955 // GF = 0% when respiration == tissue, ie. bubbles are at equilibrium. |
| 1956 // GF = 100% when respiration == limit. | |
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1957 temp_tissue = N2 + He; |
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1958 if( temp_tissue <= pres_respiration ) |
| 197 | 1959 gf = 0.0; |
| 1960 else | |
| 1961 { | |
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1962 overlay float limit = calc_lead_tissue_limit; |
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1963 // NOTE: in GF model, calc_lead_tissue_limit include already the |
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1964 // correction due to gradient factor. To compute the actual |
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1965 // current GF, we need to (re-)compute the raw ambiant-pressure |
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1966 // limit from the Bühlmann model. |
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1967 if( char_I_deco_model == 1 ) |
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1968 { |
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1969 ci = char_O_gtissue_no; |
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1970 read_buhlmann_coefficients(); |
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1971 var_N2_a = (var_N2_a * N2 + var_He_a * He) / temp_tissue; |
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1972 var_N2_b = (var_N2_b * N2 + var_He_b * He) / temp_tissue; |
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1973 limit = (temp_tissue - var_N2_a) * var_N2_b; |
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1974 } |
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1975 |
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1976 gf = (temp_tissue - pres_respiration) |
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1977 / (temp_tissue - limit) |
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1978 * 100.0; |
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1979 if( gf > 254.5 ) gf = 255.0; |
| 197 | 1980 if( gf < 0.0 ) gf = 0.0; |
| 1981 } | |
|
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1982 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
| 116 | 1983 |
| 1984 if (char_I_deco_model == 1) // calculate relative gradient factor | |
| 1985 { | |
| 197 | 1986 overlay float rgf; |
| 1987 | |
|
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1988 if( low_depth < 1.5 ) |
| 197 | 1989 rgf = GF_high; |
| 1990 else | |
| 1991 { | |
| 241 | 1992 overlay float temp1 = low_depth * 0.09985; |
| 197 | 1993 overlay float temp2 = pres_respiration - pres_surface; |
| 186 | 1994 |
| 197 | 1995 if (temp2 <= 0) |
| 1996 rgf = GF_high; | |
| 1997 else if (temp2 >= temp1) | |
| 1998 rgf = GF_low; | |
| 1999 else | |
| 2000 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
| 2001 } | |
| 186 | 2002 |
| 197 | 2003 rgf = gf / rgf; // gf is already in percent |
| 2004 if( rgf < 0.0 ) rgf = 0.0; | |
|
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2005 if( rgf > 254.5 ) rgf = 255.0; |
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2006 char_O_relative_gradient_GF = (unsigned char)(rgf+0.5f); |
| 116 | 2007 } // calc relative gradient factor |
| 2008 else | |
| 2009 { | |
| 186 | 2010 char_O_relative_gradient_GF = char_O_gradient_factor; |
| 116 | 2011 } |
| 167 | 2012 } |
| 116 | 2013 |
| 167 | 2014 ////////////////////////////////////////////////////////////////////////////// |
| 2015 // deco_calc_desaturation_time | |
| 2016 // | |
| 116 | 2017 // FIXED N2_ratio |
| 2018 // unchanged in v.101 | |
|
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2019 // Inputs: int_I_pres_surface, ppWater, char_I_desaturation_multiplier |
| 233 | 2020 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] |
| 167 | 2021 // |
| 116 | 2022 void deco_calc_desaturation_time(void) |
| 2023 { | |
|
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2024 RESET_C_STACK |
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2025 |
| 233 | 2026 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2027 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2028 | |
|
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2029 #ifndef CROSS_COMPILE |
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2030 // Note: we don't use far rom pointer, because the |
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2031 // 24 bits is to complex, hence we have to set |
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2032 // the UPPER page ourself... |
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2033 // --> Set zero if tables are moved to lower pages ! |
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2034 _asm |
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2035 movlw 1 |
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2036 movwf TBLPTRU,0 |
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2037 _endasm |
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2038 #endif |
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2039 |
| 237 | 2040 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
| 233 | 2041 pres_surface = int_I_pres_surface * 0.001; |
|
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2042 ppN2 = N2_ratio * (pres_surface - ppWater); |
| 126 | 2043 int_O_desaturation_time = 0; |
| 2044 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
| 233 | 2045 |
| 126 | 2046 for (ci=0;ci<16;ci++) |
| 2047 { | |
| 251 | 2048 overlay unsigned short desat_time; // For a particular compartiment, in min. |
| 2049 overlay float temp1; | |
| 2050 overlay float temp2; | |
| 2051 overlay float temp3; | |
| 2052 overlay float temp4; | |
| 2053 | |
| 126 | 2054 // saturation_time (for flight) and N2_saturation in multiples of halftime |
| 2055 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
| 2056 // 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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2057 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
| 126 | 2058 // N2 |
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2059 temp1 = 1.05 * ppN2 - pres_tissue[ci]; |
| 236 | 2060 temp2 = ppN2 - pres_tissue[ci]; |
| 126 | 2061 if (temp2 >= 0.0) |
| 2062 { | |
| 233 | 2063 temp1 = 0.0; |
| 2064 temp2 = 0.0; | |
| 126 | 2065 } |
| 2066 else | |
| 2067 temp1 = temp1 / temp2; | |
| 251 | 2068 if( 0.0 < temp1 && temp1 < 1.0 ) |
| 126 | 2069 { |
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2070 overlay float var_N2_halftime = buhlmann_ht[ci]; |
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2071 assert( 4.0 <= var_N2_halftime && var_N2_halftime <= 635.0 ); |
| 252 | 2072 |
|
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2073 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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2074 // minus because log is negative. |
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2075 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
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2076 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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2077 |
| 126 | 2078 } |
| 2079 else | |
| 2080 { | |
| 233 | 2081 temp1 = 0.0; |
| 2082 temp2 = 0.0; | |
| 126 | 2083 } |
| 116 | 2084 |
| 126 | 2085 // He |
| 167 | 2086 temp3 = 0.1 - (pres_tissue+16)[ci]; |
| 126 | 2087 if (temp3 >= 0.0) |
| 2088 { | |
| 233 | 2089 temp3 = 0.0; |
| 2090 temp4 = 0.0; | |
| 126 | 2091 } |
| 2092 else | |
|
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2093 temp3 = - temp3 / (pres_tissue+16)[ci]; |
| 251 | 2094 if( 0.0 < temp3 && temp3 < 1.0 ) |
| 126 | 2095 { |
|
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2096 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; |
| 261 | 2097 assert( 1.51 <= var_He_halftime && var_He_halftime <= 240.03 ); |
|
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2098 |
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2099 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
| 126 | 2100 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
| 2101 // minus because log is negative | |
| 165 | 2102 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
| 126 | 2103 } |
| 2104 else | |
| 2105 { | |
| 233 | 2106 temp3 = 0.0; |
| 2107 temp4 = 0.0; | |
| 126 | 2108 } |
| 116 | 2109 |
| 126 | 2110 // saturation_time (for flight) |
| 2111 if (temp4 > temp2) | |
| 203 | 2112 desat_time = (unsigned short)temp4; |
| 126 | 2113 else |
| 203 | 2114 desat_time = (unsigned short)temp2; |
| 252 | 2115 |
| 251 | 2116 if(desat_time > int_O_desaturation_time) |
| 2117 int_O_desaturation_time = desat_time; | |
| 116 | 2118 |
| 126 | 2119 // N2 saturation in multiples of halftime for display purposes |
| 2120 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 2121 temp2 = temp2 + 80.0; // set center | |
| 2122 if (temp2 < 0.0) | |
| 2123 temp2 = 0.0; | |
| 2124 if (temp2 > 255.0) | |
| 2125 temp2 = 255.0; | |
| 2126 char_O_tissue_saturation[ci] = (char)temp2; | |
| 233 | 2127 |
| 126 | 2128 // He saturation in multiples of halftime for display purposes |
| 2129 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
| 2130 temp4 = temp4 + 80.0; // set center | |
| 2131 if (temp4 < 0.0) | |
| 2132 temp4 = 0.0; | |
| 2133 if (temp4 > 255.0) | |
| 2134 temp4 = 255.0; | |
| 167 | 2135 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
| 126 | 2136 } // for |
| 167 | 2137 } |
| 116 | 2138 |
| 167 | 2139 ////////////////////////////////////////////////////////////////////////////// |
| 2140 // calc_wo_deco_step_1_min | |
| 2141 // | |
| 116 | 2142 // FIXED N2 Ratio |
| 2143 // optimized in v.101 (...saturation_multiplier) | |
| 2144 // desaturation slowed down to 70,42% | |
| 167 | 2145 // |
| 2146 static void calc_wo_deco_step_1_min(void) | |
| 116 | 2147 { |
| 251 | 2148 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
| 2149 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
| 2150 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
| 2151 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
| 2152 | |
| 116 | 2153 if(flag_in_divemode) |
| 2154 { | |
| 2155 flag_in_divemode = 0; | |
| 2156 set_dbg_end_of_dive(); | |
| 2157 } | |
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2158 |
| 126 | 2159 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
| 233 | 2160 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
| 2161 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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2162 ppN2 = N2_ratio * (pres_respiration - ppWater); // ppWater is the extra pressure in the body |
| 200 | 2163 ppHe = 0.0; |
| 126 | 2164 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
| 197 | 2165 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
| 126 | 2166 |
| 192 | 2167 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
| 167 | 2168 |
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2169 clear_deco_table(); |
| 200 | 2170 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
| 126 | 2171 char_O_nullzeit = 0; |
| 168 | 2172 int_O_ascenttime = 0; |
| 126 | 2173 calc_gradient_factor(); |
| 167 | 2174 } |
| 126 | 2175 |
| 167 | 2176 ////////////////////////////////////////////////////////////////////////////// |
| 2177 ////////////////////////////////////////////////////////////////////////////// | |
| 2178 ////////////////////////////////// deco_hash ///////////////////////////////// | |
| 2179 ////////////////////////////////////////////////////////////////////////////// | |
| 2180 ////////////////////////////////////////////////////////////////////////////// | |
| 126 | 2181 |
| 184 | 2182 #ifndef CROSS_COMPILE |
| 116 | 2183 void deco_hash(void) |
| 2184 { | |
| 167 | 2185 overlay unsigned char md_i, md_j; // Loop index. |
| 2186 overlay unsigned char md_t; | |
| 2187 overlay unsigned char md_buffer[16]; | |
| 2188 overlay unsigned char md_temp; | |
| 203 | 2189 overlay unsigned short md_pointer; |
| 167 | 2190 |
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2191 RESET_C_STACK |
| 126 | 2192 |
| 2193 // init | |
| 164 | 2194 for(md_i=0;md_i<16;md_i++) |
| 126 | 2195 { |
| 2196 md_state[md_i] = 0; | |
| 164 | 2197 char_O_hash[md_i] = 0; |
| 126 | 2198 } // for md_i 16 |
| 116 | 2199 |
| 126 | 2200 _asm |
| 167 | 2201 movlw 0x01 // md_pi address. |
| 2202 movwf TBLPTRU,0 | |
| 2203 movlw 0x7E | |
| 2204 movwf TBLPTRH,0 | |
| 2205 movlw 0x00 | |
| 2206 movwf TBLPTRL,0 | |
| 126 | 2207 _endasm; |
| 165 | 2208 md_i = 0; |
| 2209 do { | |
| 126 | 2210 _asm |
| 2211 TBLRDPOSTINC | |
| 2212 movff TABLAT,md_temp | |
| 2213 _endasm | |
| 165 | 2214 md_pi_subst[md_i++] = md_temp; |
| 2215 } while( md_i != 0 ); | |
| 2216 | |
| 126 | 2217 _asm |
| 167 | 2218 movlw 0x00 |
| 2219 movwf TBLPTRU,0 | |
| 2220 movlw 0x00 | |
| 2221 movwf TBLPTRH,0 | |
| 2222 movlw 0x00 | |
| 2223 movwf TBLPTRL,0 | |
| 126 | 2224 _endasm |
| 167 | 2225 |
| 126 | 2226 // cycle buffers |
| 2227 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
| 2228 { | |
| 2229 md_t = 0; | |
| 2230 for (md_i=0;md_i<16;md_i++) | |
| 2231 { | |
| 2232 if(md_pointer == 9) | |
| 164 | 2233 md_temp = char_O_hash[md_i]; |
| 126 | 2234 else |
| 2235 { | |
| 2236 _asm | |
| 167 | 2237 TBLRDPOSTINC |
| 2238 movff TABLAT,md_temp | |
| 126 | 2239 _endasm |
| 2240 } // else | |
| 167 | 2241 |
| 2242 md_buffer[md_i] = md_temp; | |
| 186 | 2243 md_state[md_i+16] = md_temp; |
| 2244 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
| 126 | 2245 } // for md_i 16 |
| 2246 | |
| 2247 for (md_i=0;md_i<18;md_i++) | |
| 2248 { | |
| 2249 for (md_j=0;md_j<48;md_j++) | |
| 2250 { | |
| 167 | 2251 md_state[md_j] ^= md_pi_subst[md_t]; |
| 126 | 2252 md_t = md_state[md_j]; |
| 2253 } // for md_j 48 | |
| 2254 md_t = (unsigned char)(md_t+1); | |
| 2255 } // for md_i 18 | |
| 164 | 2256 md_t = char_O_hash[15]; |
| 126 | 2257 |
| 2258 for (md_i=0;md_i<16;md_i++) | |
| 2259 { | |
| 167 | 2260 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
| 164 | 2261 md_t = char_O_hash[md_i]; |
| 126 | 2262 } // for md_i 16 |
| 2263 } // for md_pointer | |
| 116 | 2264 } // void deco_hash(void) |
| 184 | 2265 #endif |
| 116 | 2266 |
| 167 | 2267 ////////////////////////////////////////////////////////////////////////////// |
| 2268 // deco_clear_CNS_fraction | |
| 2269 // | |
| 116 | 2270 // new in v.101 |
| 167 | 2271 // |
| 116 | 2272 void deco_clear_CNS_fraction(void) |
| 2273 { | |
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2274 RESET_C_STACK |
| 237 | 2275 |
| 126 | 2276 CNS_fraction = 0.0; |
| 2277 char_O_CNS_fraction = 0; | |
| 167 | 2278 } |
| 116 | 2279 |
| 167 | 2280 ////////////////////////////////////////////////////////////////////////////// |
| 2281 // deco_calc_CNS_fraction | |
| 2282 // | |
| 116 | 2283 // new in v.101 |
| 2284 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
| 167 | 2285 // |
| 116 | 2286 // Input: char_I_actual_ppO2 |
| 292 | 2287 // char_I_step_is_1min : use 1min steps instead of 2sec. |
| 116 | 2288 // Output: char_O_CNS_fraction |
| 2289 // Uses and Updates: CNS_fraction | |
| 2290 // Uses: acutal_ppO2 | |
| 167 | 2291 // |
| 116 | 2292 void deco_calc_CNS_fraction(void) |
| 2293 { | |
| 167 | 2294 overlay float actual_ppO2; |
| 292 | 2295 overlay float time_factor = 1.0f; |
| 126 | 2296 RESET_C_STACK |
| 167 | 2297 |
| 237 | 2298 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); |
| 2299 assert( char_I_actual_ppO2 > 15 ); | |
| 2300 | |
| 126 | 2301 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
| 292 | 2302 if( char_I_step_is_1min ) |
| 2303 time_factor = 30.0f; | |
| 116 | 2304 |
| 126 | 2305 if (char_I_actual_ppO2 < 50) |
| 292 | 2306 ; // no changes |
| 126 | 2307 else if (char_I_actual_ppO2 < 60) |
| 292 | 2308 CNS_fraction += time_factor/(-54000.0 * actual_ppO2 + 54000.0); |
| 126 | 2309 else if (char_I_actual_ppO2 < 70) |
| 292 | 2310 CNS_fraction += time_factor/(-45000.0 * actual_ppO2 + 48600.0); |
| 126 | 2311 else if (char_I_actual_ppO2 < 80) |
| 292 | 2312 CNS_fraction += time_factor/(-36000.0 * actual_ppO2 + 42300.0); |
| 126 | 2313 else if (char_I_actual_ppO2 < 90) |
| 292 | 2314 CNS_fraction += time_factor/(-27000.0 * actual_ppO2 + 35100.0); |
| 126 | 2315 else if (char_I_actual_ppO2 < 110) |
| 292 | 2316 CNS_fraction += time_factor/(-18000.0 * actual_ppO2 + 27000.0); |
| 126 | 2317 else if (char_I_actual_ppO2 < 150) |
| 292 | 2318 CNS_fraction += time_factor/(-9000.0 * actual_ppO2 + 17100.0); |
| 126 | 2319 else if (char_I_actual_ppO2 < 160) |
| 292 | 2320 CNS_fraction += time_factor/(-22500.0 * actual_ppO2 + 37350.0); |
| 126 | 2321 else if (char_I_actual_ppO2 < 165) |
| 292 | 2322 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 | 2323 else if (char_I_actual_ppO2 < 170) |
| 292 | 2324 CNS_fraction += time_factor*0.00102; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 |
| 126 | 2325 else if (char_I_actual_ppO2 < 175) |
| 292 | 2326 CNS_fraction += time_factor*0.00136; |
| 126 | 2327 else if (char_I_actual_ppO2 < 180) |
| 292 | 2328 CNS_fraction += time_factor*0.00180; |
| 126 | 2329 else if (char_I_actual_ppO2 < 185) |
| 292 | 2330 CNS_fraction += time_factor*0.00237; |
| 126 | 2331 else if (char_I_actual_ppO2 < 190) |
| 292 | 2332 CNS_fraction += time_factor*0.00310; |
| 126 | 2333 else if (char_I_actual_ppO2 < 195) |
| 292 | 2334 CNS_fraction += time_factor*0.00401; |
| 126 | 2335 else if (char_I_actual_ppO2 < 200) |
| 292 | 2336 CNS_fraction += time_factor*0.00517; |
| 126 | 2337 else if (char_I_actual_ppO2 < 230) |
| 292 | 2338 CNS_fraction += time_factor*0.0209; |
| 126 | 2339 else |
| 292 | 2340 CNS_fraction += time_factor*0.0482; // value for 2.5 |
| 116 | 2341 |
| 126 | 2342 if (CNS_fraction > 2.5) |
| 2343 CNS_fraction = 2.5; | |
| 2344 if (CNS_fraction < 0.0) | |
| 2345 CNS_fraction = 0.0; | |
| 2346 | |
| 2347 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
| 167 | 2348 } |
| 116 | 2349 |
| 167 | 2350 ////////////////////////////////////////////////////////////////////////////// |
| 2351 // deco_calc_CNS_decrease_15min | |
| 2352 // | |
| 116 | 2353 // new in v.101 |
| 167 | 2354 // |
| 116 | 2355 // calculates the half time of 90 minutes in 6 steps of 15 min |
| 200 | 2356 // (Used in sleepmode, for low battery mode). |
| 167 | 2357 // |
| 116 | 2358 // Output: char_O_CNS_fraction |
| 2359 // Uses and Updates: CNS_fraction | |
| 167 | 2360 // |
| 116 | 2361 void deco_calc_CNS_decrease_15min(void) |
| 2362 { | |
| 237 | 2363 RESET_C_STACK |
| 2364 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
| 2365 | |
| 126 | 2366 CNS_fraction = 0.890899 * CNS_fraction; |
| 167 | 2367 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
| 2368 } | |
| 116 | 2369 |
| 167 | 2370 ////////////////////////////////////////////////////////////////////////////// |
| 2371 // deco_calc_percentage | |
| 2372 // | |
| 116 | 2373 // new in v.101 |
| 167 | 2374 // |
| 116 | 2375 // calculates int_I_temp * char_I_temp / 100 |
| 2376 // output is int_I_temp | |
| 200 | 2377 // |
| 2378 // Used to compute NoFly remaining time. | |
|
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2379 // |
| 116 | 2380 void deco_calc_percentage(void) |
| 2381 { | |
|
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2382 RESET_C_STACK |
|
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2383 |
| 237 | 2384 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
| 2385 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
| 2386 | |
|
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2387 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
| 237 | 2388 |
| 302 | 2389 assert( int_I_temp < 2880 ); // Less than 48h... |
|
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2390 } |
|
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2391 |
|
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2392 |
|
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2393 ////////////////////////////////////////////////////////////////////////////// |
|
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2394 // deco_gas_volumes |
|
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2395 // |
|
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2396 // new in v.111 |
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2397 // |
|
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2398 // calculates volumes for each gas. |
|
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2399 // |
|
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2400 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
|
240
d995e220ddac
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2401 // Gas list. |
|
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2402 // char_I_first_gas is the bottom gas. |
|
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2403 // decoplan (char_O_deco_depth, char_O_deco_time). |
|
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2404 // CF#54 == TRUE if shallowest stop first. |
|
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2405 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) or bar/min. |
|
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2406 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0) or bar/min. |
| 224 | 2407 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
|
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2408 // |
|
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2409 void deco_gas_volumes(void) |
|
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2410 { |
|
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2411 overlay float volumes[5]; |
| 265 | 2412 overlay float bottom_usage, ascent_usage; |
|
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2413 overlay unsigned char i, deepest_first; |
| 241 | 2414 overlay unsigned char gas; |
|
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2415 RESET_C_STACK |
|
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2416 |
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2417 //---- initialize with bottom consumption -------------------------------- |
|
240
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2418 for(i=0; i<5; ++i) // Nothing yet... |
|
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2419 volumes[i] = 0.0; |
|
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2420 |
| 241 | 2421 assert(1 <= char_I_first_gas && char_I_first_gas <= 5); |
| 2422 gas = char_I_first_gas - 1; | |
| 2423 | |
| 265 | 2424 bottom_usage = read_custom_function(56) * 0.1; |
| 2425 if( bottom_usage > 0.0 ) | |
| 2426 volumes[gas] | |
| 2427 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
| 2428 * char_I_bottom_time // in minutes. | |
| 2429 * bottom_usage; // In liter/minutes. | |
| 2430 else | |
| 2431 volumes[gas] = 65535.0; | |
|
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2432 |
|
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2433 //---- Ascent usage ------------------------------------------------------ |
|
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2434 |
|
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2435 deepest_first = read_custom_function(54) == 0; |
|
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2436 ascent_usage = read_custom_function(57) * 0.1; // In liter/minutes. |
|
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2437 |
| 224 | 2438 // Usage up to the first stop: |
| 2439 // - computed at MAX depth (easier, safer), | |
|
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2440 // - with an ascent speed of 10m/min. |
| 224 | 2441 // - with ascent litter / minutes. |
|
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2442 // - still using bottom gas: |
| 265 | 2443 if( ascent_usage > 0.0 ) |
| 2444 volumes[gas] | |
| 2445 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar | |
| 2446 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) | |
| 2447 * ascent_usage; // Consumption ( xxx / min @ 1 bar) | |
| 2448 else | |
| 2449 volumes[gas] = 65535.0; | |
|
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2450 |
|
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2451 for(i=0; i<32; ++i) |
|
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2452 { |
| 241 | 2453 overlay unsigned char j; |
|
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2454 overlay unsigned char depth, time, ascent; |
|
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2455 |
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2456 // Manage stops in reverse order (CF#54) |
|
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2457 if( deepest_first ) |
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2458 { |
| 241 | 2459 time = char_O_deco_time[i]; |
|
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2460 if( time == 0 ) break; // End of table: done. |
|
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2461 |
|
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|
2462 ascent = depth = char_O_deco_depth[i] & 0x7F; |
|
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2463 if( i < 31 ) |
|
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|
2464 ascent -= char_O_deco_depth[i+1] & 0x7F; |
|
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2465 } |
|
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2466 else |
|
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2467 { |
|
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2468 time = char_O_deco_time[31-i]; |
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2469 if( time == 0 ) continue; // not yet: still searh table. |
|
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2470 |
|
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2471 ascent = depth = char_O_deco_depth[31-i] & 0x7F; |
|
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2472 if( i < 31 ) |
|
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|
2473 ascent -= char_O_deco_depth[30-i] & 0x7F; |
|
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2474 } |
|
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2475 |
|
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2476 // Gas switch depth ? |
| 241 | 2477 for(j=0; j<5; ++j) |
|
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2478 { |
|
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2479 if( depth <= char_I_deco_gas_change[j] ) |
| 241 | 2480 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
| 224 | 2481 gas = j; |
|
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|
2482 } |
|
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2483 |
|
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|
2484 // usage during stop: |
| 224 | 2485 // Note: because first gas is not in there, increment gas+1 |
| 265 | 2486 if( ascent_usage > 0.0 ) |
| 2487 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. | |
| 2488 * time // in minutes. | |
| 2489 * ascent_usage // in xxx / min @ 1bar. | |
| 2490 // Plus usage during ascent to the next stop, at 10m/min. | |
| 2491 + (depth*0.1 + 1.0) | |
|
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2492 * ascent*0.1 // metre --> min |
| 265 | 2493 * ascent_usage; |
| 2494 else | |
| 2495 volumes[gas] = 65535.0; | |
|
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|
2496 } |
|
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|
2497 |
|
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2498 //---- convert results for the ASM interface ----------------------------- |
|
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|
2499 for(i=0; i<5; ++i) |
| 224 | 2500 if( volumes[i] > 6553.4 ) |
| 2501 int_O_gas_volumes[i] = 65535; | |
|
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2502 else |
| 224 | 2503 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
| 116 | 2504 } |
| 2505 | |
| 167 | 2506 ////////////////////////////////////////////////////////////////////////////// |
| 2507 | |
| 116 | 2508 void deco_push_tissues_to_vault(void) |
| 2509 { | |
| 167 | 2510 overlay unsigned char x; |
|
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2511 RESET_C_STACK |
| 167 | 2512 |
| 116 | 2513 cns_vault = CNS_fraction; |
| 167 | 2514 for (x=0;x<32;x++) |
| 2515 pres_tissue_vault[x] = pres_tissue[x]; | |
| 116 | 2516 } |
| 167 | 2517 |
| 116 | 2518 void deco_pull_tissues_from_vault(void) |
| 2519 { | |
| 167 | 2520 overlay unsigned char x; |
|
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2521 RESET_C_STACK |
| 167 | 2522 |
| 2523 for (x=0;x<32;x++) | |
| 2524 pres_tissue[x] = pres_tissue_vault[x]; | |
| 292 | 2525 |
| 2526 // Restore both CNS variable, too. | |
| 2527 CNS_fraction = cns_vault; | |
| 2528 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); | |
| 116 | 2529 } |
| 2530 | |
| 167 | 2531 ////////////////////////////////////////////////////////////////////////////// |
| 2532 // | |
| 184 | 2533 #ifndef CROSS_COMPILE |
| 2534 void main() {} | |
| 2535 #endif |