Mercurial > public > mk2
annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 300:438ecb8090eb
internationalization of EAD and END in divemode, updated spanish for gas setup
author | heinrichsweikamp |
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date | Sat, 30 Apr 2011 09:49:50 +0200 (2011-04-30) |
parents | e0083f259552 |
children | 36cc8f0c1d73 |
rev | line source |
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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! |
169
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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. |
275
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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. |
293
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75 // 2011/04/10: [jDG] Use timer TMR3 to limit loops in calc_hauptroutine_calc_deco(). |
275
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76 // 2011/04/15: [jDG] Store low_depth in 32bits (w/o rounding), for a better stability. |
293
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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. |
116 | 79 // |
167 | 80 // TODO: |
81 // + Allow to abort MD2 calculation (have to restart next time). | |
82 // | |
83 // Literature: | |
200 | 84 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
116 | 85 // 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 |
86 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
87 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
88 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
89 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
167 | 90 // |
91 // | |
116 | 92 |
93 // ********************* | |
94 // ** I N C L U D E S ** | |
95 // ********************* | |
96 #include <math.h> | |
167 | 97 |
192 | 98 // *********************************************** |
99 // ** V A R I A B L E S D E F I N I T I O N S ** | |
100 // *********************************************** | |
101 | |
102 #include "p2_definitions.h" | |
275
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103 #define TEST_MAIN |
192 | 104 #include "shared_definitions.h" |
105 | |
200 | 106 // Water vapour partial pressure in the lumb. |
233 | 107 #define ppWVapour 0.0627 |
200 | 108 |
167 | 109 // ************************* |
110 // ** P R O T O T Y P E S ** | |
111 // ************************* | |
112 | |
113 static void calc_hauptroutine(void); | |
114 static void calc_nullzeit(void); | |
115 | |
192 | 116 static void calc_tissue(PARAMETER unsigned char period); |
258 | 117 static void calc_limit(void); |
192 | 118 |
167 | 119 static void clear_tissue(void); |
120 static void calc_ascenttime(void); | |
121 static void update_startvalues(void); | |
169
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122 static void clear_deco_table(void); |
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123 static void update_deco_table(void); |
192 | 124 |
125 static void backup_sim_pres_tissue(void); | |
126 static void restore_sim_pres_tissue(void); | |
127 static void sim_tissue(PARAMETER unsigned char period); | |
128 static void sim_limit(PARAMETER float GF_current); | |
167 | 129 static void calc_gradient_factor(void); |
130 static void calc_wo_deco_step_1_min(void); | |
131 | |
132 static void calc_hauptroutine_data_input(void); | |
133 static void calc_hauptroutine_update_tissues(void); | |
134 static void calc_hauptroutine_calc_deco(void); | |
169
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135 static void sim_ascent_to_first_stop(void); |
167 | 136 |
241 | 137 static unsigned char gas_switch_deepest(void); |
138 static void gas_switch_set(void); | |
217 | 139 |
241 | 140 static unsigned char calc_nextdecodepth(void); |
116 | 141 |
200 | 142 //---- Bank 4 parameters ----------------------------------------------------- |
163 | 143 #pragma udata bank4=0x400 |
116 | 144 |
145 static float temp_limit; | |
146 static float GF_low; | |
147 static float GF_high; | |
148 static float GF_delta; | |
275
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149 static float low_depth; // Depth of deepest stop |
192 | 150 static float locked_GF_step; // GF_delta / low_depth |
151 | |
152 static unsigned char temp_depth_limit; | |
171 | 153 |
192 | 154 // Simulation context: used to predict ascent. |
155 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
156 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
116 | 157 |
192 | 158 // Real context: what we are doing now. |
159 static float calc_lead_tissue_limit; // | |
116 | 160 |
169
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161 static unsigned char internal_deco_time[32]; |
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162 static unsigned char internal_deco_depth[32]; |
116 | 163 |
164 static float cns_vault; | |
165 static float pres_tissue_vault[32]; | |
166 | |
163 | 167 //---- Bank 5 parameters ----------------------------------------------------- |
168 #pragma udata bank5=0x500 | |
169 | |
167 | 170 static unsigned char ci; |
116 | 171 static float pres_respiration; |
172 static float pres_surface; | |
173 static float temp_deco; | |
236 | 174 static float ppN2; |
200 | 175 static float ppHe; |
116 | 176 static float temp_tissue; |
200 | 177 static float N2_ratio; // Breathed gas nitrogen ratio. |
178 static float He_ratio; // Breathed gas helium ratio. | |
179 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
180 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
181 static float var_He_a; // Bühlmann a, for current He tissue. | |
182 static float var_He_b; // Bühlmann b, for current He tissue. | |
183 static float var_N2_e; // Exposition, for current N2 tissue. | |
184 static float var_He_e; // Exposition, for current He tissue. | |
116 | 185 |
164 | 186 static float pres_diluent; // new in v.101 |
187 static float const_ppO2; // new in v.101 | |
188 static float deco_ppO2_change; // new in v.101 | |
189 static float deco_ppO2; // new in v.101 | |
116 | 190 |
241 | 191 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
192 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
203 | 193 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
194 static unsigned short sim_dive_mins; // Simulated dive time. | |
200 | 195 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
196 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
197 static float CNS_fraction; // new in v.101 | |
198 static float float_saturation_multiplier; // new in v.101 | |
199 static float float_desaturation_multiplier; // new in v.101 | |
167 | 200 static float float_deco_distance; // new in v.101 |
201 static char flag_in_divemode; // new in v.108 | |
202 | |
225 | 203 static unsigned char deco_gas_change[5]; // new in v.109 |
167 | 204 |
163 | 205 //---- Bank 6 parameters ----------------------------------------------------- |
206 #pragma udata bank6=0x600 | |
116 | 207 |
197 | 208 float pres_tissue[32]; |
116 | 209 |
163 | 210 //---- Bank 7 parameters ----------------------------------------------------- |
211 #pragma udata bank7=0x700 | |
212 | |
197 | 213 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
116 | 214 static float sim_pres_tissue_backup[32]; |
215 | |
163 | 216 //---- Bank 8 parameters ----------------------------------------------------- |
116 | 217 #pragma udata bank8=0x800 |
163 | 218 |
116 | 219 static char md_pi_subst[256]; |
122
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220 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
116 | 221 |
163 | 222 //---- Bank 9 parameters ----------------------------------------------------- |
167 | 223 #pragma udata bank9=0x900 |
116 | 224 |
163 | 225 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
116 | 226 |
164 | 227 // internal, dbg: |
167 | 228 static unsigned char DBG_char_I_deco_model; // new in v.108. |
164 | 229 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
212 | 230 static unsigned char DBG_deco_gas_change; // new in v.108 |
224 | 231 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
232 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
164 | 233 static float DBG_pres_surface; // new in v.108 |
234 static float DBG_GF_low; // new in v.108 | |
235 static float DBG_GF_high; // new in v.108 | |
236 static float DBG_const_ppO2; // new in v.108 | |
237 static float DBG_deco_ppO2_change; // new in v.108 | |
238 static float DBG_deco_ppO2; // new in v.108 | |
239 static float DBG_float_saturation_multiplier; // new in v.108 | |
240 static float DBG_float_desaturation_multiplier; // new in v.108 | |
241 static float DBG_float_deco_distance; // new in v.108 | |
242 static float DBG_N2_ratio; // new in v.108 | |
243 static float DBG_He_ratio; // new in v.108 | |
244 | |
167 | 245 ////////////////////////////////////////////////////////////////////////////// |
246 ////////////////////////////////////////////////////////////////////////////// | |
247 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
248 ////////////////////////////////////////////////////////////////////////////// | |
249 ////////////////////////////////////////////////////////////////////////////// | |
250 // | |
251 // End of PROM code is 17F00, So push tables on PROM top... | |
252 // | |
253 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
254 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
116 | 255 |
167 | 256 // Magic table to compute the MD2 HASH |
257 // | |
258 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
203 | 259 rom const rom unsigned short md_pi[] = |
116 | 260 { |
261 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
262 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
263 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
264 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
265 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
266 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
267 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
268 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
269 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
270 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
271 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
272 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
273 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
274 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
275 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
276 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
277 }; | |
278 | |
167 | 279 ////////////////////////////////////////////////////////////////////////////// |
280 ////////////////////////////////////////////////////////////////////////////// | |
281 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
282 ////////////////////////////////////////////////////////////////////////////// | |
283 ////////////////////////////////////////////////////////////////////////////// | |
284 // | |
116 | 285 // all new in v.102 |
286 // moved from 0x0D000 to 0x0C000 in v.108 | |
287 | |
288 #pragma code p2_deco = 0x0C000 | |
289 | |
167 | 290 ////////////////////////////////////////////////////////////////////////////// |
291 // DBS - debug on start of dive | |
292 // | |
293 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
116 | 294 { |
167 | 295 overlay char i; // Local loop index. |
296 | |
297 //---- Reset DEBUG bit fields -------------------------------------------- | |
116 | 298 int_O_DBS_bitfield = 0; |
299 int_O_DBS2_bitfield = 0; | |
300 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
301 int_O_DBG_pre_bitfield = DBG_RESTART; | |
302 else | |
303 int_O_DBG_pre_bitfield = DBG_RUN; | |
304 int_O_DBG_post_bitfield = 0; | |
167 | 305 |
306 //---- Set 20meters ND limit --------------------------------------------- | |
116 | 307 char_O_NDL_at_20mtr = 255; |
308 | |
167 | 309 //---- Copy all dive parameters ------------------------------------------ |
116 | 310 DBG_N2_ratio = N2_ratio; |
311 DBG_He_ratio = He_ratio; | |
312 DBG_char_I_deco_model = char_I_deco_model; | |
313 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
314 DBG_pres_surface = pres_surface; | |
315 DBG_GF_low = GF_low; | |
316 DBG_GF_high = GF_high; | |
317 DBG_const_ppO2 = const_ppO2; | |
318 DBG_deco_ppO2_change = deco_ppO2_change; | |
319 DBG_deco_ppO2 = deco_ppO2; | |
224 | 320 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
321 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
225 | 322 DBG_deco_gas_change = deco_gas_change[0]; |
116 | 323 DBG_float_saturation_multiplier = float_saturation_multiplier; |
324 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
325 DBG_float_deco_distance = float_deco_distance; | |
326 | |
167 | 327 //---- Setup some error (?) conditions ----------------------------------- |
116 | 328 if(char_I_deco_model) |
329 int_O_DBS_bitfield |= DBS_mode; | |
330 if(const_ppO2) | |
331 int_O_DBS_bitfield |= DBS_ppO2; | |
167 | 332 for(i = 16; i < 32; i++) |
333 if(pres_tissue[i]) | |
116 | 334 int_O_DBS_bitfield |= DBS_HE_sat; |
335 if(deco_ppO2_change) | |
336 int_O_DBS_bitfield |= DBS_ppO2chg; | |
337 if(float_saturation_multiplier < 0.99) | |
338 int_O_DBS_bitfield |= DBS_SAT2l; | |
339 if(float_saturation_multiplier > 1.3) | |
340 int_O_DBS_bitfield |= DBS_SAT2h; | |
341 if(GF_low < 0.19) | |
342 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
343 if(GF_low > 1.01) | |
344 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
345 if(GF_high < 0.6) | |
346 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
347 if(GF_high > 1.01) | |
348 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
349 if((N2_ratio + He_ratio) > 0.95) | |
350 int_O_DBS_bitfield |= DBS_GASO22l; | |
351 if((N2_ratio + He_ratio) < 0.05) | |
352 int_O_DBS_bitfield |= DBS_GASO22h; | |
353 if(float_deco_distance > 0.25) | |
354 int_O_DBS_bitfield |= DBS_DIST2h; | |
355 if(char_I_depth_last_deco > 8) | |
356 int_O_DBS_bitfield |= DBS_LAST2h; | |
224 | 357 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
116 | 358 int_O_DBS_bitfield |= DBS_DECOO2l; |
224 | 359 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
116 | 360 int_O_DBS_bitfield |= DBS_DECOO2h; |
361 if(pres_respiration > 3.0) | |
362 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
363 if(pres_surface - pres_respiration > 0.2) | |
364 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
365 if(pres_surface < 0.75) | |
366 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
367 if(pres_surface > 1.11) | |
368 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
369 if(float_desaturation_multiplier < 0.70) | |
370 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
371 if(float_desaturation_multiplier > 1.01) | |
372 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
373 if(GF_low > GF_high) | |
374 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
375 } | |
376 | |
167 | 377 ////////////////////////////////////////////////////////////////////////////// |
378 // DBG - set DBG to end_of_dive | |
379 // | |
380 static void set_dbg_end_of_dive(void) | |
116 | 381 { |
382 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
383 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
384 } | |
385 | |
167 | 386 ////////////////////////////////////////////////////////////////////////////// |
387 // DBG - NDL at first 20 m. hit | |
388 // | |
389 static void check_ndl(void) | |
116 | 390 { |
167 | 391 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
392 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
393 ) | |
116 | 394 { |
167 | 395 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
396 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
184 | 397 char_O_NDL_at_20mtr = 254; |
116 | 398 } |
399 } | |
400 | |
167 | 401 ////////////////////////////////////////////////////////////////////////////// |
402 // DBG - multi main during dive | |
403 // | |
184 | 404 static void check_dbg(PARAMETER char is_post_check) |
116 | 405 { |
203 | 406 overlay unsigned short temp_DBS = 0; |
200 | 407 overlay unsigned char i; // Local loop index. |
167 | 408 |
116 | 409 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
410 temp_DBS |= DBG_c_gas; | |
411 if(DBG_const_ppO2 != const_ppO2) | |
412 temp_DBS |= DBG_c_ppO2; | |
167 | 413 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
414 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
415 ) | |
116 | 416 temp_DBS |= DBG_CdeSAT; |
417 if(DBG_char_I_deco_model != char_I_deco_model) | |
418 temp_DBS |= DBG_C_MODE; | |
419 if(DBG_pres_surface != pres_surface) | |
420 temp_DBS |= DBG_C_SURF; | |
167 | 421 |
422 if( !DBS_HE_sat && !He_ratio) | |
423 for(i = 16; i < 32; i++) | |
424 if(pres_tissue[i]) | |
116 | 425 temp_DBS |= DBG_HEwoHE; |
167 | 426 |
116 | 427 if(DBG_deco_ppO2 != deco_ppO2) |
428 temp_DBS |= DBG_C_DPPO2; | |
167 | 429 |
225 | 430 if( DBG_deco_gas_change != deco_gas_change[0] |
224 | 431 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
432 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
116 | 433 temp_DBS |= DBG_C_DGAS; |
167 | 434 |
116 | 435 if(DBG_float_deco_distance != float_deco_distance) |
436 temp_DBS |= DBG_C_DIST; | |
437 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
438 temp_DBS |= DBG_C_LAST; | |
167 | 439 if( DBG_GF_low != GF_low |
440 || DBG_GF_high != GF_high ) | |
116 | 441 temp_DBS |= DBG_C_GF; |
442 if(pres_respiration > 13.0) | |
443 temp_DBS |= DBG_PHIGH; | |
444 if(pres_surface - pres_respiration > 0.2) | |
445 temp_DBS |= DBG_PLOW; | |
446 if(is_post_check) | |
447 int_O_DBG_post_bitfield |= temp_DBS; | |
448 else | |
449 int_O_DBG_pre_bitfield |= temp_DBS; | |
450 } | |
451 | |
167 | 452 ////////////////////////////////////////////////////////////////////////////// |
453 // DBG - prior to calc. of dive | |
454 // | |
455 static void check_pre_dbg(void) | |
116 | 456 { |
457 check_dbg(0); | |
458 } | |
459 | |
167 | 460 ////////////////////////////////////////////////////////////////////////////// |
461 // DBG - after decocalc of dive | |
462 // | |
463 static void check_post_dbg(void) | |
116 | 464 { |
465 check_dbg(1); | |
466 } | |
467 | |
165 | 468 ////////////////////////////////////////////////////////////////////////////// |
167 | 469 ////////////////////////////////////////////////////////////////////////////// |
470 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
471 ////////////////////////////////////////////////////////////////////////////// | |
472 ////////////////////////////////////////////////////////////////////////////// | |
473 | |
235 | 474 ////////////////////////////////////////////////////////////////////////////// |
257
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475 // Bump to blue-screen when an assert is wrong |
235 | 476 #ifdef __DEBUG |
477 void assert_failed(PARAMETER short int line) | |
478 { | |
479 extern void PLED_resetdebugger(void); | |
480 extern unsigned short temp10; | |
481 | |
257
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482 temp10 = line; // Show source line number as stack depth. |
235 | 483 PLED_resetdebugger(); |
484 } | |
485 #endif | |
257
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486 |
235 | 487 ////////////////////////////////////////////////////////////////////////////// |
488 // When calling C code from ASM context, the data stack pointer and | |
489 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
490 | |
491 #ifdef CROSS_COMPILE | |
492 # define RESET_C_STACK | |
493 #else | |
494 # ifdef __DEBUG | |
495 # define RESET_C_STACK fillDataStack(); | |
496 void fillDataStack(void) | |
497 { | |
498 _asm | |
499 LFSR 1,C_STACK | |
500 MOVLW 0xCC | |
501 loop: MOVWF POSTINC1,0 | |
502 TSTFSZ FSR1L,0 | |
503 BRA loop | |
504 | |
505 LFSR 1,C_STACK | |
506 LFSR 2,C_STACK | |
507 _endasm | |
508 } | |
509 # else | |
510 # define RESET_C_STACK \ | |
511 _asm \ | |
512 LFSR 1, C_STACK \ | |
513 LFSR 2, C_STACK \ | |
514 _endasm | |
515 # endif | |
516 #endif | |
517 | |
518 ////////////////////////////////////////////////////////////////////////////// | |
257
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519 // Read CF values from the C code. |
235 | 520 |
203 | 521 static short read_custom_function(PARAMETER unsigned char cf) |
167 | 522 { |
184 | 523 #ifdef CROSS_COMPILE |
524 extern unsigned short custom_functions[]; | |
525 return custom_functions[cf]; | |
526 #else | |
167 | 527 extern unsigned char hi, lo; |
528 extern void getcustom15(); | |
529 _asm | |
530 movff cf,WREG | |
531 call getcustom15,0 | |
532 movff lo,PRODL | |
533 movff hi,PRODH | |
534 _endasm | |
184 | 535 #endif |
167 | 536 } |
537 | |
538 ////////////////////////////////////////////////////////////////////////////// | |
257
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539 // Fast subroutine to read RTC timer 3. |
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540 // Note: result is in 1/32 of msecs. |
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541 static unsigned short tmr3(void) |
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542 { |
261 | 543 #ifndef CROSS_COMPILE |
257
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544 _asm |
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545 movff 0xfb2,PRODL // TMR3L |
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546 movff 0xfb3,PRODH // TMR3H |
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547 _endasm // result in PRODH:PRODL. |
261 | 548 #else |
549 return 0; | |
550 #endif | |
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551 } |
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552 |
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553 ////////////////////////////////////////////////////////////////////////////// |
258 | 554 // read buhlmann tables A and B for compatriment ci |
555 // | |
556 static void read_buhlmann_coefficients(void) | |
165 | 557 { |
184 | 558 #ifndef CROSS_COMPILE |
167 | 559 // Note: we don't use far rom pointer, because the |
560 // 24 bits is to complex, hence we have to set | |
561 // the UPPER page ourself... | |
562 // --> Set zero if tables are moved to lower pages ! | |
563 _asm | |
564 movlw 1 | |
565 movwf TBLPTRU,0 | |
566 _endasm | |
184 | 567 #endif |
258 | 568 |
197 | 569 assert( 0 <= ci && ci < 16 ); |
165 | 570 var_N2_a = buhlmann_a[ci]; |
571 var_N2_b = buhlmann_b[ci]; | |
167 | 572 var_He_a = (buhlmann_a+16)[ci]; |
573 var_He_b = (buhlmann_b+16)[ci]; | |
574 | |
165 | 575 // Check reading consistency: |
576 if( (var_N2_a < 0.231) | |
577 || (var_N2_a > 1.27) | |
578 || (var_N2_b < 0.504) | |
579 || (var_N2_b > 0.966) | |
580 || (var_He_a < 0.510) | |
581 || (var_He_a > 1.75) | |
582 || (var_He_b < 0.423) | |
583 || (var_He_b > 0.927) | |
584 ) | |
258 | 585 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; |
586 } | |
587 | |
588 ////////////////////////////////////////////////////////////////////////////// | |
589 // read buhlmann tables for compatriment ci | |
590 // If period == 0 : 2sec interval | |
591 // 1 : 1 min interval | |
592 // 2 : 10 min interval. | |
593 static void read_buhlmann_times(PARAMETER char period) | |
594 { | |
595 #ifndef CROSS_COMPILE | |
596 // Note: we don't use far rom pointer, because the | |
597 // 24 bits is to complex, hence we have to set | |
598 // the UPPER page ourself... | |
599 // --> Set zero if tables are moved to lower pages ! | |
600 _asm | |
601 movlw 1 | |
602 movwf TBLPTRU,0 | |
603 _endasm | |
604 #endif | |
605 assert( 0 <= ci && ci < 16 ); | |
606 | |
165 | 607 // Integration intervals. |
167 | 608 switch(period) |
165 | 609 { |
610 case 0: //---- 2 sec ----------------------------------------------------- | |
611 var_N2_e = e2secs[ci]; | |
167 | 612 var_He_e = (e2secs+16)[ci]; |
165 | 613 |
614 // Check reading consistency: | |
615 if( (var_N2_e < 0.0000363) | |
616 || (var_N2_e > 0.00577) | |
617 || (var_He_e < 0.0000961) | |
618 || (var_He_e > 0.150) | |
619 ) | |
620 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
621 | |
622 break; | |
623 | |
624 case 1: //---- 1 min ----------------------------------------------------- | |
625 var_N2_e = e1min[ci]; | |
167 | 626 var_He_e = (e1min+16)[ci]; |
165 | 627 |
628 // Check reading consistency: | |
629 if( (var_N2_e < 1.09E-3) | |
630 || (var_N2_e > 0.1592) | |
631 || (var_He_e < 0.00288) | |
632 || (var_He_e > 0.3682) | |
633 ) | |
634 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
635 | |
636 break; | |
637 | |
638 case 2: //---- 10 min ---------------------------------------------------- | |
639 var_N2_e = e10min[ci]; | |
167 | 640 var_He_e = (e10min+16)[ci]; |
165 | 641 |
642 // Check reading consistency: | |
643 if( (var_N2_e < 0.01085) | |
644 || (var_N2_e > 0.82323) | |
645 || (var_He_e < 0.02846) | |
646 || (var_He_e > 0.98986) | |
647 ) | |
648 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
649 | |
650 break; | |
197 | 651 |
652 default: | |
653 assert(0); // Never go there... | |
165 | 654 } |
655 } | |
656 | |
657 ////////////////////////////////////////////////////////////////////////////// | |
167 | 658 // calc_next_decodepth_GF |
165 | 659 // |
116 | 660 // new in v.102 |
165 | 661 // |
116 | 662 // INPUT, changing during dive: |
192 | 663 // low_depth |
167 | 664 // |
116 | 665 // INPUT, fixed during dive: |
167 | 666 // pres_surface |
667 // GF_delta | |
668 // GF_high | |
669 // GF_low | |
171 | 670 // char_I_depth_last_deco |
167 | 671 // float_deco_distance |
672 // | |
241 | 673 // RETURN TRUE iff a stop is needed. |
674 // | |
116 | 675 // OUTPUT |
171 | 676 // locked_GF_step |
167 | 677 // temp_depth_limt |
192 | 678 // low_depth |
167 | 679 // |
241 | 680 static unsigned char calc_nextdecodepth(void) |
167 | 681 { |
241 | 682 //--- Max ascent speed --------------------------------------------------- |
683 // Recompute leading gas limit, at current depth: | |
684 overlay float depth = (temp_deco - pres_surface) / 0.09985; | |
685 | |
686 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
687 overlay float min_depth = depth - 10.0; | |
688 | |
689 // Do we need to stop at current depth ? | |
690 overlay unsigned char need_stop = 0; | |
691 | |
692 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
693 | |
212 | 694 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
116 | 695 if (char_I_deco_model == 1) |
696 { | |
241 | 697 if( depth >= low_depth ) |
192 | 698 sim_limit( GF_low ); |
699 else | |
700 sim_limit( GF_high - depth * locked_GF_step ); | |
701 | |
702 // Stops are needed ? | |
703 if( sim_lead_tissue_limit > pres_surface ) | |
704 { | |
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705 // Compute tolerated depth, for the leading tissue [metre]: |
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706 overlay float depth_tol = (sim_lead_tissue_limit - pres_surface) / 0.09985; |
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707 |
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708 // Deepest stop, in multiples of 3 metres. |
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709 overlay unsigned char first_stop = 3 * (short)(0.99999 + depth_tol * 0.33333 ); |
192 | 710 assert( first_stop < 128 ); |
171 | 711 |
275
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712 // Is it a new deepest needed stop ? If yes this is the reference for |
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713 // the varying gradient factor. So reset that: |
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714 if( depth_tol > min_depth && depth_tol > low_depth ) |
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715 { |
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716 // Store the deepest stop depth, as reference for GF_low. |
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717 low_depth = depth_tol; |
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718 locked_GF_step = GF_delta / low_depth; |
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719 } |
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720 |
264 | 721 #if defined(__DEBUG) || defined(CROSS_COMPILE) |
261 | 722 { |
723 // Extra testing code to make sure the first_stop formula | |
724 // and rounding provides correct depth: | |
725 overlay float pres_stop = first_stop * 0.09985 // Meters to bar | |
726 + pres_surface; | |
727 | |
728 // Keep GF_low until a first stop depth is found: | |
729 if( first_stop >= low_depth ) | |
730 sim_limit( GF_low ); | |
731 else | |
732 // current GF is GF_high - alpha (GF_high - GF_low) | |
733 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
734 sim_limit( GF_high - first_stop * locked_GF_step ); | |
735 | |
736 // upper limit (lowest pressure tolerated): | |
737 assert( sim_lead_tissue_limit < pres_stop ); | |
738 } | |
739 #endif | |
740 | |
212 | 741 // Apply correction for the shallowest stop. |
192 | 742 if( first_stop == 3 ) // new in v104 |
743 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
171 | 744 |
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745 // Because gradient factor at first_stop might be bigger than at |
261 | 746 // current depth, we might ascent a bit more. |
747 // Hence, check all stops until one is indeed higher than tolerated presure: | |
748 while(first_stop > 0) | |
192 | 749 { |
750 overlay unsigned char next_stop; // Next index (0..30) | |
751 overlay float pres_stop; // Next depth (0m..90m) | |
171 | 752 |
241 | 753 // Check max speed, or reaching surface. |
754 if( first_stop <= min_depth ) | |
755 break; | |
756 | |
757 // So, there is indeed a stop needed: | |
758 need_stop = 1; | |
759 | |
192 | 760 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
761 next_stop = 0; | |
216 | 762 else if( first_stop == 6 ) |
763 next_stop = char_I_depth_last_deco; | |
192 | 764 else |
765 next_stop = first_stop - 3; // Index of next (upper) stop. | |
167 | 766 |
241 | 767 pres_stop = next_stop * 0.09985 // Meters to bar |
192 | 768 + pres_surface; |
769 | |
212 | 770 // Keep GF_low until a first stop depth is found: |
771 if( next_stop >= low_depth ) | |
772 sim_limit( GF_low ); | |
773 else | |
774 // current GF is GF_high - alpha (GF_high - GF_low) | |
775 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
776 sim_limit( GF_high - next_stop * locked_GF_step ); | |
171 | 777 |
192 | 778 // upper limit (lowest pressure tolerated): |
779 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
780 break; | |
781 | |
782 // Else, validate that stop and loop... | |
783 first_stop = next_stop; | |
212 | 784 } |
785 | |
786 // next stop is the last validated depth found, aka first_stop | |
275
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787 temp_depth_limit = first_stop; // Stop depth, in metre. |
192 | 788 } |
171 | 789 else |
275
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790 temp_depth_limit = 0; // stop depth, in metre. |
116 | 791 } |
167 | 792 else //---- ZH-L16 model ------------------------------------------------- |
116 | 793 { |
192 | 794 overlay float pres_gradient; |
795 | |
796 // Original model | |
116 | 797 // optimized in v.101 |
171 | 798 // char_I_depth_last_deco included in v.101 |
116 | 799 |
192 | 800 // Compute sim_lead_tissue_limit too, but just once. |
801 sim_limit(1.0); | |
802 | |
803 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
167 | 804 if (pres_gradient >= 0) |
116 | 805 { |
241 | 806 pres_gradient /= 0.29955; // Bar --> stop number; |
275
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807 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
241 | 808 need_stop = 1; // Hit. |
809 | |
810 // Implement last stop at 4m/5m/6m... | |
811 if( temp_depth_limit == 3 ) | |
812 temp_depth_limit = char_I_depth_last_deco; | |
171 | 813 } |
116 | 814 else |
241 | 815 temp_depth_limit = 0; |
171 | 816 } |
212 | 817 |
217 | 818 //---- Check gas change -------------------------------------------------- |
241 | 819 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
820 | |
821 return need_stop; | |
167 | 822 } |
116 | 823 |
167 | 824 ////////////////////////////////////////////////////////////////////////////// |
169
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825 // copy_deco_table |
167 | 826 // |
169
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827 // Buffer the stops, once computed, so we can continue to display them |
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828 // while computing the next set. |
167 | 829 // |
169
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830 static void copy_deco_table(void) |
116 | 831 { |
169
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832 // Copy depth of the first (deepest) stop, because when reversing |
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833 // order, it will be hard to find... |
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834 char_O_first_deco_depth = internal_deco_depth[0] & 0x7F; |
169
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835 char_O_first_deco_time = internal_deco_time [0]; |
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836 |
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837 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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838 { |
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839 overlay unsigned char x, y; |
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840 |
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841 //---- First: search the first non-null depth |
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842 for(x=31; x != 0; --x) |
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843 if( internal_deco_depth[x] != 0 ) break; |
116 | 844 |
169
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845 //---- Second: copy to output table (in reverse order) |
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846 for(y=0; y<32; y++, --x) |
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847 { |
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848 char_O_deco_depth[y] = internal_deco_depth[x]; |
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849 char_O_deco_time [y] = internal_deco_time [x]; |
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850 |
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851 // Stop only once the last transfer is done. |
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852 if( x == 0 ) break; |
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853 } |
116 | 854 |
169
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855 //---- Third: fill table end with null |
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856 for(y++; y<32; y++) |
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857 { |
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858 char_O_deco_time [y] = 0; |
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859 char_O_deco_depth[y] = 0; |
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860 } |
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861 } |
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862 else //---- Straight copy ------------------------------------------------ |
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863 { |
167 | 864 overlay unsigned char x; |
865 | |
169
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866 for(x=0; x<32; x++) |
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867 { |
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868 char_O_deco_depth[x] = internal_deco_depth[x]; |
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869 char_O_deco_time [x] = internal_deco_time [x]; |
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870 } |
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871 } |
167 | 872 } |
116 | 873 |
167 | 874 ////////////////////////////////////////////////////////////////////////////// |
116 | 875 // temp_tissue_safety // |
167 | 876 // |
116 | 877 // outsourced in v.102 |
167 | 878 // |
879 // Apply safety factors for brand ZH-L16 model. | |
880 // | |
881 static void temp_tissue_safety(void) | |
116 | 882 { |
197 | 883 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
884 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
885 | |
167 | 886 if( char_I_deco_model == 0 ) |
116 | 887 { |
888 if (temp_tissue < 0.0) | |
126 | 889 temp_tissue *= float_desaturation_multiplier; |
116 | 890 else |
126 | 891 temp_tissue *= float_saturation_multiplier; |
116 | 892 } |
167 | 893 } |
116 | 894 |
167 | 895 ////////////////////////////////////////////////////////////////////////////// |
896 ////////////////////////////////////////////////////////////////////////////// | |
116 | 897 // ** THE JUMP-IN CODE ** |
898 // ** for the asm code ** | |
167 | 899 ////////////////////////////////////////////////////////////////////////////// |
900 ////////////////////////////////////////////////////////////////////////////// | |
122
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901 |
167 | 902 ////////////////////////////////////////////////////////////////////////////// |
169
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903 // Called every 2 seconds during diving. |
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904 // update tissues every time. |
184 | 905 // |
169
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906 // Every 6 seconds (or slower when TTS > 16): |
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907 // - update deco table (char_O_deco_time/depth) with new values. |
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908 // - update ascent time, |
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909 // - set status to zero (so we can check there is new results). |
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910 // |
116 | 911 void deco_calc_hauptroutine(void) |
912 { | |
122
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913 RESET_C_STACK |
116 | 914 calc_hauptroutine(); |
915 int_O_desaturation_time = 65535; | |
916 } | |
917 | |
167 | 918 ////////////////////////////////////////////////////////////////////////////// |
184 | 919 // Reset decompression model: |
920 // + Set all tissues to equilibrium with Air at ambient pressure. | |
921 // + Reset last stop to 0m | |
922 // + Reset all model output. | |
116 | 923 void deco_clear_tissue(void) |
924 { | |
122
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925 RESET_C_STACK |
116 | 926 clear_tissue(); |
927 } | |
928 | |
167 | 929 ////////////////////////////////////////////////////////////////////////////// |
278 | 930 // Called every 1 min during decoplanning. |
931 // Update tissues for 1 min. | |
932 // | |
933 void deco_calc_tissue(void) | |
934 { | |
935 RESET_C_STACK | |
936 calc_hauptroutine_update_tissues(); | |
937 } | |
938 | |
939 ////////////////////////////////////////////////////////////////////////////// | |
167 | 940 |
116 | 941 void deco_calc_wo_deco_step_1_min(void) |
942 { | |
122
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943 RESET_C_STACK |
116 | 944 calc_wo_deco_step_1_min(); |
945 deco_calc_desaturation_time(); | |
946 } | |
947 | |
167 | 948 ////////////////////////////////////////////////////////////////////////////// |
949 | |
116 | 950 void deco_debug(void) |
951 { | |
122
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952 RESET_C_STACK |
116 | 953 } |
954 | |
241 | 955 |
956 ////////////////////////////////////////////////////////////////////////////// | |
957 // Find current gas in the list (if any). | |
958 // | |
959 // Input: char_I_deco_N2_ratio[] and He, to detect breathed gas. | |
960 // | |
961 // Output: sim_gas_depth_used | |
962 // | |
963 static void gas_switch_find_current(void) | |
964 { | |
247
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965 overlay unsigned char j; |
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966 overlay unsigned char N2 = (unsigned char)(N2_ratio * 100 + 0.5); |
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967 overlay unsigned char He = (unsigned char)(He_ratio * 100 + 0.5); |
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968 |
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969 for(j=0; j<5; ++j) |
241 | 970 { |
247
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971 // Make sure to detect if we are already breathing some gas in |
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972 // the current list (happends when first gas do have a depth). |
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973 if( N2 == char_I_deco_N2_ratio[j] |
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974 && He == char_I_deco_He_ratio[j] |
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975 ) |
290
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976 { |
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977 if( char_I_deco_gas_change[j] ) |
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978 temp_depth_limit = sim_gas_last_depth = char_I_deco_gas_change[j]; |
247
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979 sim_gas_last_used = j+1; |
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980 break; |
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981 } |
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982 } |
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983 |
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984 // If there is no gas-switch-delay running ? |
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985 if( sim_gas_delay <= sim_dive_mins) |
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986 { |
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987 // Compute current depth: |
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988 overlay unsigned char depth = (unsigned char)((pres_respiration - pres_surface) / 0.09985); |
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989 assert( depth < 130 ); |
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990 |
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991 // And if I'm above the last decostop (with the 3m margin) ? |
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992 if( (sim_gas_last_depth-3) > depth ) |
241 | 993 { |
247
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994 for(j=0; j<5; ++j) |
241 | 995 { |
247
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996 // And If I am in the range of a valide stop ? |
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997 // (again, with the same 3m margin) |
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998 if( char_I_deco_gas_change[j] |
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999 && depth <= char_I_deco_gas_change[j] |
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1000 && depth >= (char_I_deco_gas_change[j] - 3) |
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1001 ) |
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1002 { |
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1003 // Then start gas-switch timer there, |
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1004 sim_gas_delay = sim_dive_mins |
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1005 + read_custom_function(55); |
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1006 |
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1007 // And make sure decostop will be recorded at the right depth. |
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1008 temp_depth_limit = char_I_deco_gas_change[j]; |
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1009 break; |
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1010 } |
241 | 1011 } |
1012 } | |
247
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1013 else |
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1014 // Make clear there is no deay anymore. |
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1015 sim_gas_delay = 0; |
241 | 1016 } |
1017 } | |
1018 | |
167 | 1019 ////////////////////////////////////////////////////////////////////////////// |
217 | 1020 // Find deepest available gas. |
201 | 1021 // |
241 | 1022 // Input: temp_depth_limit, |
1023 // deco_gas_change[] | |
1024 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
212 | 1025 // |
241 | 1026 // RETURNS TRUE if a stop is needed for gas switch. |
1027 // | |
1028 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
212 | 1029 // |
241 | 1030 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
1031 // are null), or during the ascent to make sure we are not passing a | |
1032 // stop (in which case both can be already set). | |
1033 // | |
1034 static unsigned char gas_switch_deepest(void) | |
201 | 1035 { |
241 | 1036 overlay unsigned char switch_deco = 0, switch_last = 0; |
201 | 1037 |
1038 if (char_I_const_ppO2 == 0) | |
1039 { | |
225 | 1040 overlay unsigned char j; |
1041 | |
241 | 1042 // Loop over all enabled gas, to find the deepest one, |
1043 // above las gas, but below temp_depth_limit. | |
1044 for(j=0; j<5; ++j) | |
225 | 1045 { |
241 | 1046 // Gas not (yet) allowed ? Skip ! |
1047 if( temp_depth_limit > deco_gas_change[j] ) | |
1048 continue; | |
1049 | |
1050 // Gas deeper than the current/previous one ? Skip ! | |
1051 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) | |
1052 continue; | |
1053 | |
1054 // First, or deeper ? | |
247
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1055 if( switch_deco < deco_gas_change[j] ) |
241 | 1056 { |
1057 switch_deco = deco_gas_change[j]; | |
1058 switch_last = j+1; | |
1059 } | |
225 | 1060 } |
201 | 1061 } |
1062 | |
203 | 1063 // If there is a better gas available |
241 | 1064 if( switch_deco ) |
201 | 1065 { |
241 | 1066 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
201 | 1067 |
241 | 1068 // Should restart gas-switch delay only when gas do changes... |
1069 assert( sim_gas_delay <= sim_dive_mins ); | |
217 | 1070 |
241 | 1071 sim_gas_last_depth = switch_deco; |
1072 sim_gas_last_used = switch_last; | |
1073 sim_gas_delay = read_custom_function(55); | |
217 | 1074 |
241 | 1075 // Apply depth correction ONLY if CF#55 is not null: |
1076 if( sim_gas_delay > 0 ) | |
225 | 1077 { |
241 | 1078 sim_gas_delay += sim_dive_mins; |
1079 temp_depth_limit = switch_deco; | |
1080 return 1; | |
225 | 1081 } |
241 | 1082 |
1083 return 0; | |
217 | 1084 } |
1085 | |
241 | 1086 sim_gas_delay = 0; |
1087 return 0; | |
217 | 1088 } |
1089 | |
1090 ////////////////////////////////////////////////////////////////////////////// | |
1091 // Calculate gas switches | |
1092 // | |
1093 // | |
1094 // Input: N2_ratio, He_ratio. | |
1095 // sim_gas_last_used | |
1096 // | |
1097 // Output: calc_N2_ratio, calc_He_ratio | |
1098 // | |
241 | 1099 static void gas_switch_set(void) |
217 | 1100 { |
224 | 1101 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
217 | 1102 |
224 | 1103 if( sim_gas_last_used == 0 ) |
1104 { | |
1105 calc_N2_ratio = N2_ratio; | |
1106 calc_He_ratio = He_ratio; | |
1107 } | |
1108 else | |
1109 { | |
1110 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
1111 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
217 | 1112 } |
201 | 1113 |
1114 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
1115 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
1116 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
1117 } | |
1118 | |
1119 ////////////////////////////////////////////////////////////////////////////// | |
1120 // | |
212 | 1121 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
1122 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
276 | 1123 // float_deco_distance : security factor. |
212 | 1124 // Water-vapor pressure inside lumbs (ppWVapour). |
1125 // | |
236 | 1126 // Output: ppN2, ppHe. |
212 | 1127 // |
1128 static void sim_alveolar_presures(void) | |
201 | 1129 { |
212 | 1130 overlay float deco_diluent = temp_deco; // new in v.101 |
1131 | |
276 | 1132 // Take deco offset into account, but not at surface. |
1133 // Note: this should be done on ambiant pressure, hence before | |
1134 // computing the diluant partial pressure... | |
1135 if( deco_diluent > pres_surface ) | |
1136 deco_diluent += float_deco_distance; | |
1137 | |
212 | 1138 //---- CCR mode : deco gas switch ? -------------------------------------- |
276 | 1139 if( char_I_const_ppO2 != 0 ) |
201 | 1140 { |
276 | 1141 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
1142 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
1143 // ppWVapour in the equations below: | |
212 | 1144 if( temp_deco > deco_ppO2_change ) |
276 | 1145 deco_diluent -= const_ppO2; |
201 | 1146 else |
276 | 1147 deco_diluent -= deco_ppO2; |
1148 deco_diluent /= calc_N2_ratio + calc_He_ratio; | |
212 | 1149 |
1150 if (deco_diluent > temp_deco) | |
1151 deco_diluent = temp_deco; | |
201 | 1152 } |
1153 | |
212 | 1154 if( deco_diluent > ppWVapour ) |
201 | 1155 { |
236 | 1156 ppN2 = calc_N2_ratio * (deco_diluent - ppWVapour); |
201 | 1157 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); |
1158 } | |
1159 else | |
1160 { | |
236 | 1161 ppN2 = 0.0; |
201 | 1162 ppHe = 0.0; |
1163 } | |
236 | 1164 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
201 | 1165 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
1166 } | |
1167 | |
1168 ////////////////////////////////////////////////////////////////////////////// | |
167 | 1169 // clear_tissue |
1170 // | |
165 | 1171 // optimized in v.101 (var_N2_a) |
167 | 1172 // |
1173 // preload tissues with standard pressure for the given ambient pressure. | |
1174 // Note: fixed N2_ratio for standard air. | |
201 | 1175 // |
167 | 1176 static void clear_tissue(void) |
116 | 1177 { |
1178 flag_in_divemode = 0; | |
1179 int_O_DBS_bitfield = 0; | |
1180 int_O_DBS2_bitfield = 0; | |
1181 int_O_DBG_pre_bitfield = 0; | |
1182 int_O_DBG_post_bitfield = 0; | |
1183 char_O_NDL_at_20mtr = 255; | |
1184 | |
167 | 1185 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
1186 N2_ratio = 0.7902; | |
212 | 1187 pres_respiration = int_I_pres_respiration * 0.001; |
164 | 1188 |
167 | 1189 for(ci=0; ci<16; ci++) |
126 | 1190 { |
197 | 1191 // cycle through the 16 Bühlmann tissues |
200 | 1192 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
164 | 1193 pres_tissue[ci] = p; |
197 | 1194 |
1195 // cycle through the 16 Bühlmann tissues for Helium | |
167 | 1196 (pres_tissue+16)[ci] = 0.0; |
126 | 1197 } // for 0 to 16 |
116 | 1198 |
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1199 clear_deco_table(); |
126 | 1200 char_O_deco_status = 0; |
1201 char_O_nullzeit = 0; | |
168 | 1202 int_O_ascenttime = 0; |
126 | 1203 char_O_gradient_factor = 0; |
1204 char_O_relative_gradient_GF = 0; | |
197 | 1205 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
258 | 1206 |
1207 calc_lead_tissue_limit = 0.0; | |
1208 char_O_gtissue_no = 0; | |
167 | 1209 } |
116 | 1210 |
167 | 1211 ////////////////////////////////////////////////////////////////////////////// |
1212 // calc_hauptroutine | |
1213 // | |
1214 // this is the major code in dive mode calculates: | |
116 | 1215 // the tissues, |
167 | 1216 // the bottom time, |
1217 // and simulates the ascend with all deco stops. | |
171 | 1218 // |
1219 // The deco_state sequence is : | |
1220 // 3 (at surface) | |
1221 // +---> 0 : calc nullzeit | |
1222 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
1223 // | +-> 1 : simulate up to 16min of stops. | |
1224 // | +------< not finished | |
1225 // +--------< finish | |
1226 // | |
167 | 1227 static void calc_hauptroutine(void) |
116 | 1228 { |
241 | 1229 static unsigned char backup_gas_used = 0; |
1230 static unsigned char backup_gas_depth = 0; | |
217 | 1231 static unsigned char backup_gas_delay = 0; |
186 | 1232 |
116 | 1233 calc_hauptroutine_data_input(); |
1234 | |
1235 if(!flag_in_divemode) | |
1236 { | |
1237 flag_in_divemode = 1; | |
1238 create_dbs_set_dbg_and_ndl20mtr(); | |
1239 } | |
1240 else | |
1241 check_pre_dbg(); | |
1242 | |
1243 calc_hauptroutine_update_tissues(); | |
1244 calc_gradient_factor(); | |
1245 | |
167 | 1246 // toggle between calculation for nullzeit (bottom time), |
1247 // deco stops | |
1248 // and more deco stops (continue) | |
1249 switch( char_O_deco_status ) | |
116 | 1250 { |
186 | 1251 case 3: //---- At surface: start a new dive ------------------------------ |
1252 clear_deco_table(); | |
1253 copy_deco_table(); | |
200 | 1254 int_O_ascenttime = 0; // Reset DTR. |
1255 char_O_nullzeit = 0; // Reset bottom time. | |
278 | 1256 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
201 | 1257 |
217 | 1258 // Values that should be reset just once for the full real dive. |
1259 // This is used to record the lowest stop for the whole dive, | |
1260 // Including ACCROSS all simulated ascent. | |
293
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1261 low_depth = 0.0; |
217 | 1262 |
1263 // Reset gas switch history. | |
241 | 1264 backup_gas_used = sim_gas_last_used = 0; |
1265 backup_gas_depth = sim_gas_last_depth = 0; | |
217 | 1266 backup_gas_delay = sim_gas_delay = 0; |
203 | 1267 sim_dive_mins = 0; |
1268 break; | |
186 | 1269 |
167 | 1270 case 0: //---- bottom time ----------------------------------------------- |
1271 calc_nullzeit(); | |
1272 check_ndl(); | |
186 | 1273 char_O_deco_status = 2; // calc ascent next time. |
1274 break; | |
1275 | |
1276 case 2: //---- Simulate ascent to first stop ----------------------------- | |
203 | 1277 // Check proposed gas at begin of ascent simulation |
247
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1278 sim_dive_mins = int_I_divemins; // Init current time. |
241 | 1279 |
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1280 gas_switch_find_current(); // Lookup for current gas & time. |
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1281 gas_switch_set(); // setup calc_ratio's |
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1282 |
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1283 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1284 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
203 | 1285 backup_gas_delay = sim_gas_delay; |
186 | 1286 |
1287 sim_ascent_to_first_stop(); | |
201 | 1288 |
1289 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
167 | 1290 break; |
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1291 |
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1292 case 1: //---- Simulate stops -------------------------------------------- |
167 | 1293 calc_hauptroutine_calc_deco(); |
186 | 1294 |
1295 // If simulation is finished, restore the GF low reference, so that | |
1296 // next ascent simulation is done from the current depth: | |
217 | 1297 if( char_O_deco_status == 0 ) |
186 | 1298 { |
241 | 1299 sim_gas_last_used = backup_gas_used; |
1300 sim_gas_last_depth = backup_gas_depth; | |
247
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1301 sim_gas_delay = backup_gas_delay; |
186 | 1302 } |
167 | 1303 break; |
116 | 1304 } |
167 | 1305 |
116 | 1306 check_post_dbg(); |
1307 } | |
1308 | |
167 | 1309 ////////////////////////////////////////////////////////////////////////////// |
1310 // calc_hauptroutine_data_input | |
1311 // | |
1312 // Reset all C-code dive parameters from their ASM-code values. | |
1313 // Detect gas change condition. | |
1314 // | |
116 | 1315 void calc_hauptroutine_data_input(void) |
1316 { | |
203 | 1317 overlay short int_temp; |
126 | 1318 |
197 | 1319 pres_respiration = int_I_pres_respiration * 0.001; |
1320 pres_surface = int_I_pres_surface * 0.001; | |
1321 N2_ratio = char_I_N2_ratio * 0.01; | |
1322 He_ratio = char_I_He_ratio * 0.01; | |
1323 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
116 | 1324 |
126 | 1325 // ____________________________________________________ |
1326 // | |
1327 // _____________ G A S _ C H A N G E S ________________ | |
1328 // ____________________________________________________ | |
1329 | |
212 | 1330 // Keep a margin of 150mbar = 1.50m |
1331 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
1332 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
126 | 1333 |
225 | 1334 deco_gas_change[0] = 0; |
1335 deco_gas_change[1] = 0; | |
1336 deco_gas_change[2] = 0; | |
1337 deco_gas_change[3] = 0; | |
1338 deco_gas_change[4] = 0; | |
116 | 1339 |
203 | 1340 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
222
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1341 if(char_I_deco_gas_change[0]) |
126 | 1342 { |
222
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1343 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
225 | 1344 deco_gas_change[0] = char_I_deco_gas_change[0]; |
126 | 1345 } |
222
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1346 if(char_I_deco_gas_change[1]) |
126 | 1347 { |
222
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1348 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
225 | 1349 deco_gas_change[1] = char_I_deco_gas_change[1]; |
126 | 1350 } |
222
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1351 if(char_I_deco_gas_change[2]) |
126 | 1352 { |
222
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1353 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
225 | 1354 deco_gas_change[2] = char_I_deco_gas_change[2]; |
126 | 1355 } |
222
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1356 if(char_I_deco_gas_change[3]) |
126 | 1357 { |
222
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1358 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
225 | 1359 deco_gas_change[3] = char_I_deco_gas_change[3]; |
126 | 1360 } |
222
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1361 if(char_I_deco_gas_change[4]) |
126 | 1362 { |
222
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1363 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
225 | 1364 deco_gas_change[4] = char_I_deco_gas_change[4]; |
126 | 1365 } |
116 | 1366 |
197 | 1367 const_ppO2 = char_I_const_ppO2 * 0.01; |
1368 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
1369 + pres_surface | |
1370 + float_deco_distance; | |
1371 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
1372 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
1373 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
1374 GF_low = char_I_GF_Low_percentage * 0.01; | |
1375 GF_high = char_I_GF_High_percentage * 0.01; | |
126 | 1376 GF_delta = GF_high - GF_low; |
116 | 1377 } |
1378 | |
167 | 1379 ////////////////////////////////////////////////////////////////////////////// |
171 | 1380 // |
1381 // | |
116 | 1382 void calc_hauptroutine_update_tissues(void) |
1383 { | |
197 | 1384 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
1385 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
1386 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
237 | 1387 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
197 | 1388 |
276 | 1389 pres_diluent = pres_respiration; |
1390 if (char_I_const_ppO2 != 0) // new in v.101 | |
186 | 1391 { |
276 | 1392 pres_diluent -= const_ppO2; // new in v.101 |
1393 pres_diluent /= N2_ratio + He_ratio; // new in v.101 | |
1394 if( pres_diluent > pres_respiration ) // new in v.101 | |
1395 pres_diluent = pres_respiration; // new in v.101 | |
186 | 1396 } |
276 | 1397 if (pres_diluent > ppWVapour) // new in v.101 |
116 | 1398 { |
276 | 1399 ppN2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
200 | 1400 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
116 | 1401 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
1402 } | |
167 | 1403 else // new in v.101 |
116 | 1404 { |
236 | 1405 ppN2 = 0.0; // new in v.101 |
200 | 1406 ppHe = 0.0; // new in v.101 |
116 | 1407 char_O_diluent = 0; |
1408 } | |
1409 | |
1410 if(!char_I_step_is_1min) | |
192 | 1411 calc_tissue(0); |
116 | 1412 else |
192 | 1413 calc_tissue(1); |
186 | 1414 |
192 | 1415 // Calc limit for surface, ie. GF_high. |
258 | 1416 calc_limit(); |
186 | 1417 |
203 | 1418 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
1419 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
192 | 1420 |
1421 // if guiding tissue can not be exposed to surface pressure immediately | |
1422 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
116 | 1423 { |
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1424 char_O_nullzeit = 0; // deco necessary |
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1425 char_O_deco_status = 2; // calculate ascent on next iteration. |
116 | 1426 } |
171 | 1427 } |
1428 | |
116 | 1429 |
167 | 1430 ////////////////////////////////////////////////////////////////////////////// |
169
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1431 // Compute stops. |
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1432 // |
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1433 // Note: because this can be very long, break on 16 iterations, and set state |
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1434 // to 0 when finished, or to 1 when needing to continue. |
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1435 // Note: because this might be very long (~ 66 ms by iteration in 1.84beta), |
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1436 // break the loop when total time > 512msec. |
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1437 // |
116 | 1438 void calc_hauptroutine_calc_deco(void) |
1439 { | |
169
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1440 overlay unsigned char loop; |
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1441 |
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1442 for(loop = 0; loop < 16; ++loop) |
116 | 1443 { |
257
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1444 // Limit loops to 512ms, using the RTC timer 3: |
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1445 if( tmr3() & (512*32) ) |
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1446 break; |
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1447 |
241 | 1448 // Do not ascent while doing a gas switch ? |
203 | 1449 if( sim_gas_delay <= sim_dive_mins ) |
1450 { | |
241 | 1451 if( calc_nextdecodepth() ) |
1452 { | |
1453 if( temp_depth_limit == 0 ) | |
1454 goto Surface; | |
116 | 1455 |
241 | 1456 //---- We hit a stop at temp_depth_limit --------------------- |
1457 temp_deco = temp_depth_limit * 0.09985 // Convert to relative bar, | |
1458 + pres_surface; // To absolute. | |
1459 update_deco_table(); // Adds a one minute stops. | |
1460 } | |
1461 else | |
1462 { | |
1463 //---- No stop ----------------------------------------------- | |
1464 temp_deco -= 0.9985; // Ascend 10m, no wait. | |
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1465 |
241 | 1466 //---- Finish computations once surface is reached ----------- |
1467 if( temp_deco <= pres_surface ) | |
1468 { | |
1469 Surface: | |
1470 copy_deco_table(); | |
1471 calc_ascenttime(); | |
1472 char_O_deco_status = 0; // calc nullzeit next time. | |
278 | 1473 char_O_deco_last_stop = 0; // Surface reached. |
241 | 1474 return; |
1475 } | |
1476 } | |
212 | 1477 } |
1478 else | |
241 | 1479 update_deco_table(); // Just pass one minute. |
197 | 1480 |
241 | 1481 //---- Then update tissue -------------------------------------------- |
203 | 1482 sim_dive_mins++; // Advance simulated time by 1 minute. |
241 | 1483 gas_switch_set(); // Apply any simulated gas change, once validated. |
212 | 1484 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
192 | 1485 sim_tissue(1); // Simulate compartiments for 1 minute. |
116 | 1486 } |
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1487 |
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1488 // Surface not reached, need more stops... |
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1489 char_O_deco_status = 1; // calc more stops next time. |
278 | 1490 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
116 | 1491 } |
1492 | |
167 | 1493 ////////////////////////////////////////////////////////////////////////////// |
169
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1494 // Simulation ascention to first deco stop. |
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1495 // |
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1496 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1497 // there is no need to break on more that 16 iterations |
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1498 // (or we are already in deep shit). |
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1499 // |
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1500 void sim_ascent_to_first_stop(void) |
116 | 1501 { |
171 | 1502 update_startvalues(); |
169
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1503 clear_deco_table(); |
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1504 |
200 | 1505 temp_deco = pres_respiration; // Starts from current real depth. |
169
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1506 |
212 | 1507 // Do we have a gas switch going on ? |
1508 if( sim_gas_delay > sim_dive_mins ) | |
1509 return; | |
1510 | |
241 | 1511 //---- Loop until first stop, gas switch, or surface is reached ---------- |
169
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1512 for(;;) |
116 | 1513 { |
241 | 1514 // Try ascending 1 full minute. |
1515 temp_deco -= 0.9985; // 1 min, at 10m/min. ~ 1bar. | |
203 | 1516 |
212 | 1517 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
1518 sim_limit(GF_low); | |
1519 | |
1520 // Did we reach deepest remaining stop ? | |
241 | 1521 if( temp_deco < sim_lead_tissue_limit ) |
212 | 1522 { |
241 | 1523 temp_deco += 0.9985; // Restore last correct depth, |
1524 break; // End fast ascent. | |
212 | 1525 } |
1526 | |
203 | 1527 // Did we reach surface ? |
1528 if( temp_deco <= pres_surface ) | |
1529 { | |
1530 temp_deco = pres_surface; // Yes: finished ! | |
1531 break; | |
1532 } | |
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1533 |
241 | 1534 // Check for gas change below new depth ? |
1535 temp_depth_limit = (temp_deco - pres_surface) / 0.09985; | |
1536 | |
1537 if( gas_switch_deepest() ) | |
1538 { | |
1539 temp_deco = temp_depth_limit * 0.09985 + pres_surface; | |
212 | 1540 break; |
241 | 1541 } |
171 | 1542 |
203 | 1543 sim_dive_mins++; // Advance simulated time by 1 minute. |
241 | 1544 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
203 | 1545 sim_tissue(1); // and update tissues for 1 min. |
1546 } | |
167 | 1547 } |
116 | 1548 |
167 | 1549 ////////////////////////////////////////////////////////////////////////////// |
1550 // calc_tissue | |
1551 // | |
116 | 1552 // optimized in v.101 |
167 | 1553 // |
184 | 1554 static void calc_tissue(PARAMETER unsigned char period) |
116 | 1555 { |
251 | 1556 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
1557 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
236 | 1558 |
126 | 1559 for (ci=0;ci<16;ci++) |
1560 { | |
258 | 1561 read_buhlmann_times(period); // 2 sec or 1 min period. |
116 | 1562 |
126 | 1563 // N2 |
236 | 1564 temp_tissue = (ppN2 - pres_tissue[ci]) * var_N2_e; |
126 | 1565 temp_tissue_safety(); |
167 | 1566 pres_tissue[ci] += temp_tissue; |
165 | 1567 |
126 | 1568 // He |
200 | 1569 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
126 | 1570 temp_tissue_safety(); |
167 | 1571 (pres_tissue+16)[ci] += temp_tissue; |
192 | 1572 } |
167 | 1573 } |
116 | 1574 |
167 | 1575 ////////////////////////////////////////////////////////////////////////////// |
192 | 1576 // calc_limit |
167 | 1577 // |
192 | 1578 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
167 | 1579 // |
258 | 1580 static void calc_limit(void) |
167 | 1581 { |
192 | 1582 char_O_gtissue_no = 255; |
1583 calc_lead_tissue_limit = 0.0; | |
1584 | |
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1585 for(ci=0; ci<16;ci++) |
192 | 1586 { |
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1587 overlay float N2 = pres_tissue[ci]; |
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1588 overlay float He = (pres_tissue+16)[ci]; |
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1589 overlay float p = N2 + He; |
192 | 1590 |
258 | 1591 read_buhlmann_coefficients(); |
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1592 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
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1593 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; |
116 | 1594 |
192 | 1595 // Apply the Eric Baker's varying gradient factor correction. |
1596 // Note: the correction factor depends both on GF and b, | |
1597 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1598 // so that can change who is the leading gas... | |
1599 // Note: Also depends of the GF. So the calcul is different for | |
1600 // GF_low, current GF, or GF_high... | |
1601 // *BUT* calc_tissue() is used to compute bottom time, | |
1602 // hence what would happend at surface, | |
1603 // hence at GF_high. | |
1604 if( char_I_deco_model == 1 ) | |
258 | 1605 p = ( p - var_N2_a * GF_high) * var_N2_b |
1606 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
192 | 1607 else |
1608 p = (p - var_N2_a) * var_N2_b; | |
258 | 1609 if( p < 0.0 ) p = 0.0; |
192 | 1610 |
1611 if( p > calc_lead_tissue_limit ) | |
1612 { | |
1613 char_O_gtissue_no = ci; | |
1614 calc_lead_tissue_limit = p; | |
1615 } | |
1616 } | |
197 | 1617 |
1618 assert( char_O_gtissue_no < 16 ); | |
1619 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
167 | 1620 } |
1621 | |
1622 ////////////////////////////////////////////////////////////////////////////// | |
1623 // calc_nullzeit | |
1624 // | |
1625 // calculates the remaining bottom time | |
1626 // | |
1627 // unchanged in v.101 | |
1628 // | |
1629 static void calc_nullzeit(void) | |
1630 { | |
203 | 1631 overlay unsigned char loop; |
200 | 1632 update_startvalues(); |
167 | 1633 |
116 | 1634 char_O_nullzeit = 0; |
167 | 1635 for(loop = 1; loop <= 17; loop++) |
116 | 1636 { |
1637 backup_sim_pres_tissue(); | |
197 | 1638 sim_tissue(2); // 10 min. |
192 | 1639 sim_limit(GF_high); |
167 | 1640 |
192 | 1641 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
185 | 1642 { |
1643 restore_sim_pres_tissue(); | |
1644 break; | |
1645 } | |
1646 // Validate once we know its good. | |
1647 char_O_nullzeit += 10; | |
167 | 1648 } |
1649 | |
116 | 1650 if (char_O_nullzeit < 60) |
1651 { | |
167 | 1652 for(loop=1; loop <= 10; loop++) |
116 | 1653 { |
197 | 1654 sim_tissue(1); // 1 min |
192 | 1655 sim_limit(GF_high); |
1656 | |
1657 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
185 | 1658 break; |
1659 char_O_nullzeit++; | |
167 | 1660 } |
185 | 1661 } |
1662 } | |
116 | 1663 |
167 | 1664 ////////////////////////////////////////////////////////////////////////////// |
1665 // backup_sim_pres_tissue | |
1666 // | |
116 | 1667 void backup_sim_pres_tissue(void) |
1668 { | |
167 | 1669 overlay unsigned char x; |
1670 | |
1671 for(x = 0; x<32; x++) | |
126 | 1672 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
167 | 1673 } |
116 | 1674 |
167 | 1675 ////////////////////////////////////////////////////////////////////////////// |
1676 // restore_sim_pres_tissue | |
1677 // | |
116 | 1678 void restore_sim_pres_tissue(void) |
1679 { | |
167 | 1680 overlay unsigned char x; |
1681 | |
1682 for(x = 0; x<32; x++) | |
126 | 1683 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
167 | 1684 } |
116 | 1685 |
167 | 1686 ////////////////////////////////////////////////////////////////////////////// |
1687 // calc_ascenttime | |
1688 // | |
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1689 static void calc_ascenttime(void) |
116 | 1690 { |
126 | 1691 if (pres_respiration > pres_surface) |
1692 { | |
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1693 overlay unsigned char x; |
168 | 1694 |
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1695 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
192 | 1696 overlay float ascent = pres_respiration - pres_surface + 0.7; |
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1697 if (ascent < 0.0) |
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1698 ascent = 0.0; |
203 | 1699 int_O_ascenttime = (unsigned short)(ascent + 0.99); |
168 | 1700 |
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1701 for(x=0; x<32 && internal_deco_depth[x]; x++) |
203 | 1702 int_O_ascenttime += (unsigned short)internal_deco_time[x]; |
126 | 1703 } |
1704 else | |
168 | 1705 int_O_ascenttime = 0; |
167 | 1706 } |
116 | 1707 |
167 | 1708 ////////////////////////////////////////////////////////////////////////////// |
1709 // update_startvalues | |
1710 // | |
116 | 1711 // updated in v.102 |
167 | 1712 // |
116 | 1713 void update_startvalues(void) |
1714 { | |
167 | 1715 overlay unsigned char x; |
116 | 1716 |
201 | 1717 // Start ascent simulation with current tissue partial pressures. |
116 | 1718 for (x = 0;x<16;x++) |
1719 { | |
1720 sim_pres_tissue[x] = pres_tissue[x]; | |
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1721 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
116 | 1722 } |
197 | 1723 |
201 | 1724 // No leading tissue (yet) for this ascent simulation. |
197 | 1725 sim_lead_tissue_limit = 0.0; |
1726 sim_lead_tissue_no = 255; | |
167 | 1727 } |
116 | 1728 |
167 | 1729 ////////////////////////////////////////////////////////////////////////////// |
192 | 1730 // sim_tissue |
167 | 1731 // |
116 | 1732 // optimized in v.101 |
167 | 1733 // |
1734 // Function very simular to calc_tissue, but: | |
1735 // + Use a 1min or 10min period. | |
1736 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
184 | 1737 static void sim_tissue(PARAMETER unsigned char period) |
116 | 1738 { |
251 | 1739 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
1740 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
236 | 1741 |
192 | 1742 for(ci=0; ci<16; ci++) |
126 | 1743 { |
258 | 1744 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
165 | 1745 |
126 | 1746 // N2 |
236 | 1747 temp_tissue = (ppN2 - sim_pres_tissue[ci]) * var_N2_e; |
126 | 1748 temp_tissue_safety(); |
167 | 1749 sim_pres_tissue[ci] += temp_tissue; |
126 | 1750 |
1751 // He | |
200 | 1752 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
126 | 1753 temp_tissue_safety(); |
167 | 1754 (sim_pres_tissue+16)[ci] += temp_tissue; |
192 | 1755 } |
167 | 1756 } |
116 | 1757 |
167 | 1758 ////////////////////////////////////////////////////////////////////////////// |
192 | 1759 // sim_limit() |
1760 // | |
1761 // New in v.111 | |
1762 // | |
1763 // Function separated from sim_tissue() to allow recomputing limit on | |
1764 // different depth, because it depends on current gradient factor. | |
167 | 1765 // |
192 | 1766 static void sim_limit(PARAMETER float GF_current) |
116 | 1767 { |
212 | 1768 assert( 0.0 < GF_current && GF_current <= 1.0f); |
1769 | |
192 | 1770 sim_lead_tissue_limit = 0.0; |
212 | 1771 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
192 | 1772 |
1773 for(ci=0; ci<16; ci++) | |
1774 { | |
241 | 1775 overlay float N2 = sim_pres_tissue[ci]; |
1776 overlay float He = (sim_pres_tissue+16)[ci]; | |
1777 overlay float p = N2 + He; | |
192 | 1778 |
258 | 1779 read_buhlmann_coefficients(); |
241 | 1780 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
1781 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
192 | 1782 |
1783 // Apply the Eric Baker's varying gradient factor correction. | |
1784 // Note: the correction factor depends both on GF and b, | |
1785 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1786 // so that can change who is the leading gas... | |
1787 // Note: Also depends of the GF_current... | |
1788 if( char_I_deco_model == 1 ) | |
1789 p = ( p - var_N2_a * GF_current) * var_N2_b | |
1790 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
1791 else | |
1792 p = (p - var_N2_a) * var_N2_b; | |
237 | 1793 if( p < 0.0 ) p = 0.0; |
192 | 1794 |
1795 if( p > sim_lead_tissue_limit ) | |
1796 { | |
1797 sim_lead_tissue_no = ci; | |
1798 sim_lead_tissue_limit = p; | |
1799 } | |
1800 } // for ci | |
197 | 1801 |
1802 assert( sim_lead_tissue_no < 16 ); | |
237 | 1803 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
167 | 1804 } |
116 | 1805 |
167 | 1806 ////////////////////////////////////////////////////////////////////////////// |
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1807 // clear_deco_table |
167 | 1808 // |
1809 // unchanged in v.101 | |
1810 // | |
169
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1811 static void clear_deco_table(void) |
116 | 1812 { |
169
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1813 overlay unsigned char x; |
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1814 |
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1815 for(x=0; x<32; ++x) |
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1816 { |
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1817 internal_deco_time [x] = 0; |
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1818 internal_deco_depth[x] = 0; |
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1819 } |
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1820 } |
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1821 |
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1822 ////////////////////////////////////////////////////////////////////////////// |
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1823 // update_deco_table |
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1824 // |
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1825 // Add 1 min to current stop. |
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1826 // |
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1827 // Inputs: |
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1828 // temp_depth_limit = stop's depth, in meters. |
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1829 // In/Out: |
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1830 // internal_deco_depth[] : depth (in metres) of each stops. |
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1831 // internal_deco_time [] : time (in minutes) of each stops. |
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1832 // |
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1833 static void update_deco_table() |
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1834 { |
192 | 1835 overlay unsigned char x; |
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1836 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1837 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1838 |
192 | 1839 for(x=0; x<32; ++x) |
1840 { | |
212 | 1841 // Make sure deco-stops are recorded in order: |
1842 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
1843 | |
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1844 if( (internal_deco_depth[x] & 0x7F) == temp_depth_limit ) |
192 | 1845 { |
1846 // Do not overflow (max 255') | |
1847 if( internal_deco_time[x] < 255 ) | |
1848 { | |
1849 internal_deco_time[x]++; | |
1850 return; | |
1851 } | |
1852 // But store extra in the next stop... | |
169
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1853 } |
192 | 1854 |
169
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1855 if( internal_deco_depth[x] == 0 ) |
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1856 { |
192 | 1857 internal_deco_depth[x] = temp_depth_limit; |
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1858 if( sim_gas_delay > sim_dive_mins ) |
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1859 internal_deco_depth[x] |= 0x80; |
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1860 |
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1861 internal_deco_time[x] = 1; |
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1862 return; |
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1863 } |
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1864 } |
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1865 |
192 | 1866 // Can't store stops at more than 96m. |
1867 // Or stops at less that 3m too. | |
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1868 // Just do nothing with that... |
167 | 1869 } |
116 | 1870 |
167 | 1871 ////////////////////////////////////////////////////////////////////////////// |
1872 // calc_gradient_factor | |
1873 // | |
165 | 1874 // optimized in v.101 (var_N2_a) |
116 | 1875 // new code in v.102 |
167 | 1876 // |
1877 static void calc_gradient_factor(void) | |
116 | 1878 { |
197 | 1879 overlay float gf; |
293
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1880 overlay float N2 = pres_tissue[char_O_gtissue_no]; |
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1881 overlay float He = (pres_tissue+16)[char_O_gtissue_no]; |
237 | 1882 |
197 | 1883 assert( char_O_gtissue_no < 16 ); |
237 | 1884 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
197 | 1885 |
293
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1886 // tissue > respiration (currently off-gasing) |
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1887 // GF = 0% when respiration == tissue |
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1888 // GF = 100% when respiration == limit |
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1889 temp_tissue = N2 + He; |
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1890 if( temp_tissue <= pres_respiration ) |
197 | 1891 gf = 0.0; |
1892 else | |
1893 { | |
293
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1894 overlay float limit = calc_lead_tissue_limit; |
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1895 // NOTE: in GF model, calc_lead_tissue_limit include already the |
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1896 // correction due to gradient factor. To compute the actual |
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1897 // current GF, we need to (re-)compute the raw ambiant-pressure |
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1898 // limit from the Bühlmann model. |
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1899 if( char_I_deco_model == 1 ) |
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1900 { |
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1901 ci = char_O_gtissue_no; |
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1902 read_buhlmann_coefficients(); |
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1903 var_N2_a = (var_N2_a * N2 + var_He_a * He) / temp_tissue; |
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1904 var_N2_b = (var_N2_b * N2 + var_He_b * He) / temp_tissue; |
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1905 limit = (temp_tissue - var_N2_a) * var_N2_b; |
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1906 } |
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1907 |
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1908 gf = (temp_tissue - pres_respiration) |
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1909 / (temp_tissue - limit) |
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1910 * 100.0; |
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1911 if( gf > 254.5 ) gf = 255.0; |
197 | 1912 if( gf < 0.0 ) gf = 0.0; |
1913 } | |
293
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1914 char_O_gradient_factor = (unsigned char)(gf+0.5f); |
116 | 1915 |
1916 if (char_I_deco_model == 1) // calculate relative gradient factor | |
1917 { | |
197 | 1918 overlay float rgf; |
1919 | |
293
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1920 if( low_depth < 1.5 ) |
197 | 1921 rgf = GF_high; |
1922 else | |
1923 { | |
241 | 1924 overlay float temp1 = low_depth * 0.09985; |
197 | 1925 overlay float temp2 = pres_respiration - pres_surface; |
186 | 1926 |
197 | 1927 if (temp2 <= 0) |
1928 rgf = GF_high; | |
1929 else if (temp2 >= temp1) | |
1930 rgf = GF_low; | |
1931 else | |
1932 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
1933 } | |
186 | 1934 |
197 | 1935 rgf = gf / rgf; // gf is already in percent |
1936 if( rgf < 0.0 ) rgf = 0.0; | |
293
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1937 if( rgf > 254.5 ) rgf = 255.0; |
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1938 char_O_relative_gradient_GF = (unsigned char)(rgf+0.5f); |
116 | 1939 } // calc relative gradient factor |
1940 else | |
1941 { | |
186 | 1942 char_O_relative_gradient_GF = char_O_gradient_factor; |
116 | 1943 } |
167 | 1944 } |
116 | 1945 |
167 | 1946 ////////////////////////////////////////////////////////////////////////////// |
1947 // deco_calc_desaturation_time | |
1948 // | |
116 | 1949 // FIXED N2_ratio |
1950 // unchanged in v.101 | |
233 | 1951 // Inputs: int_I_pres_surface, ppWVapour, char_I_desaturation_multiplier |
1952 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] | |
167 | 1953 // |
116 | 1954 void deco_calc_desaturation_time(void) |
1955 { | |
122
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1956 RESET_C_STACK |
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1957 |
233 | 1958 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
1959 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
1960 | |
260
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1961 #ifndef CROSS_COMPILE |
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1962 // Note: we don't use far rom pointer, because the |
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1963 // 24 bits is to complex, hence we have to set |
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1964 // the UPPER page ourself... |
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1965 // --> Set zero if tables are moved to lower pages ! |
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1966 _asm |
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1967 movlw 1 |
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1968 movwf TBLPTRU,0 |
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1969 _endasm |
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1970 #endif |
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1971 |
237 | 1972 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
233 | 1973 pres_surface = int_I_pres_surface * 0.001; |
236 | 1974 ppN2 = N2_ratio * (pres_surface - ppWVapour); |
126 | 1975 int_O_desaturation_time = 0; |
1976 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
233 | 1977 |
126 | 1978 for (ci=0;ci<16;ci++) |
1979 { | |
251 | 1980 overlay unsigned short desat_time; // For a particular compartiment, in min. |
1981 overlay float temp1; | |
1982 overlay float temp2; | |
1983 overlay float temp3; | |
1984 overlay float temp4; | |
1985 | |
126 | 1986 // saturation_time (for flight) and N2_saturation in multiples of halftime |
1987 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
1988 // new in version v.101: 1.07 = 7 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
260
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1989 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
126 | 1990 // N2 |
260
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1991 temp1 = 1.05 * ppN2 - pres_tissue[ci]; |
236 | 1992 temp2 = ppN2 - pres_tissue[ci]; |
126 | 1993 if (temp2 >= 0.0) |
1994 { | |
233 | 1995 temp1 = 0.0; |
1996 temp2 = 0.0; | |
126 | 1997 } |
1998 else | |
1999 temp1 = temp1 / temp2; | |
251 | 2000 if( 0.0 < temp1 && temp1 < 1.0 ) |
126 | 2001 { |
260
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2002 overlay float var_N2_halftime = buhlmann_ht[ci]; |
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2003 assert( 4.0 <= var_N2_halftime && var_N2_halftime <= 635.0 ); |
252 | 2004 |
260
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2005 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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2006 // minus because log is negative. |
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2007 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
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2008 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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2009 |
126 | 2010 } |
2011 else | |
2012 { | |
233 | 2013 temp1 = 0.0; |
2014 temp2 = 0.0; | |
126 | 2015 } |
116 | 2016 |
126 | 2017 // He |
167 | 2018 temp3 = 0.1 - (pres_tissue+16)[ci]; |
126 | 2019 if (temp3 >= 0.0) |
2020 { | |
233 | 2021 temp3 = 0.0; |
2022 temp4 = 0.0; | |
126 | 2023 } |
2024 else | |
260
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2025 temp3 = - temp3 / (pres_tissue+16)[ci]; |
251 | 2026 if( 0.0 < temp3 && temp3 < 1.0 ) |
126 | 2027 { |
260
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2028 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; |
261 | 2029 assert( 1.51 <= var_He_halftime && var_He_halftime <= 240.03 ); |
260
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2030 |
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2031 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
126 | 2032 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
2033 // minus because log is negative | |
165 | 2034 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
126 | 2035 } |
2036 else | |
2037 { | |
233 | 2038 temp3 = 0.0; |
2039 temp4 = 0.0; | |
126 | 2040 } |
116 | 2041 |
126 | 2042 // saturation_time (for flight) |
2043 if (temp4 > temp2) | |
203 | 2044 desat_time = (unsigned short)temp4; |
126 | 2045 else |
203 | 2046 desat_time = (unsigned short)temp2; |
252 | 2047 |
251 | 2048 if(desat_time > int_O_desaturation_time) |
2049 int_O_desaturation_time = desat_time; | |
116 | 2050 |
126 | 2051 // N2 saturation in multiples of halftime for display purposes |
2052 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
2053 temp2 = temp2 + 80.0; // set center | |
2054 if (temp2 < 0.0) | |
2055 temp2 = 0.0; | |
2056 if (temp2 > 255.0) | |
2057 temp2 = 255.0; | |
2058 char_O_tissue_saturation[ci] = (char)temp2; | |
233 | 2059 |
126 | 2060 // He saturation in multiples of halftime for display purposes |
2061 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
2062 temp4 = temp4 + 80.0; // set center | |
2063 if (temp4 < 0.0) | |
2064 temp4 = 0.0; | |
2065 if (temp4 > 255.0) | |
2066 temp4 = 255.0; | |
167 | 2067 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
126 | 2068 } // for |
167 | 2069 } |
116 | 2070 |
167 | 2071 ////////////////////////////////////////////////////////////////////////////// |
2072 // calc_wo_deco_step_1_min | |
2073 // | |
116 | 2074 // FIXED N2 Ratio |
2075 // optimized in v.101 (...saturation_multiplier) | |
2076 // desaturation slowed down to 70,42% | |
167 | 2077 // |
2078 static void calc_wo_deco_step_1_min(void) | |
116 | 2079 { |
251 | 2080 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
2081 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
2082 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
2083 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
2084 | |
116 | 2085 if(flag_in_divemode) |
2086 { | |
2087 flag_in_divemode = 0; | |
2088 set_dbg_end_of_dive(); | |
2089 } | |
122
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2090 |
126 | 2091 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
233 | 2092 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
2093 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
236 | 2094 ppN2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body |
200 | 2095 ppHe = 0.0; |
126 | 2096 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
197 | 2097 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
126 | 2098 |
192 | 2099 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
167 | 2100 |
169
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2101 clear_deco_table(); |
200 | 2102 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
126 | 2103 char_O_nullzeit = 0; |
168 | 2104 int_O_ascenttime = 0; |
126 | 2105 calc_gradient_factor(); |
167 | 2106 } |
126 | 2107 |
167 | 2108 ////////////////////////////////////////////////////////////////////////////// |
2109 ////////////////////////////////////////////////////////////////////////////// | |
2110 ////////////////////////////////// deco_hash ///////////////////////////////// | |
2111 ////////////////////////////////////////////////////////////////////////////// | |
2112 ////////////////////////////////////////////////////////////////////////////// | |
126 | 2113 |
184 | 2114 #ifndef CROSS_COMPILE |
116 | 2115 void deco_hash(void) |
2116 { | |
167 | 2117 overlay unsigned char md_i, md_j; // Loop index. |
2118 overlay unsigned char md_t; | |
2119 overlay unsigned char md_buffer[16]; | |
2120 overlay unsigned char md_temp; | |
203 | 2121 overlay unsigned short md_pointer; |
167 | 2122 |
122
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2123 RESET_C_STACK |
126 | 2124 |
2125 // init | |
164 | 2126 for(md_i=0;md_i<16;md_i++) |
126 | 2127 { |
2128 md_state[md_i] = 0; | |
164 | 2129 char_O_hash[md_i] = 0; |
126 | 2130 } // for md_i 16 |
116 | 2131 |
126 | 2132 _asm |
167 | 2133 movlw 0x01 // md_pi address. |
2134 movwf TBLPTRU,0 | |
2135 movlw 0x7E | |
2136 movwf TBLPTRH,0 | |
2137 movlw 0x00 | |
2138 movwf TBLPTRL,0 | |
126 | 2139 _endasm; |
165 | 2140 md_i = 0; |
2141 do { | |
126 | 2142 _asm |
2143 TBLRDPOSTINC | |
2144 movff TABLAT,md_temp | |
2145 _endasm | |
165 | 2146 md_pi_subst[md_i++] = md_temp; |
2147 } while( md_i != 0 ); | |
2148 | |
126 | 2149 _asm |
167 | 2150 movlw 0x00 |
2151 movwf TBLPTRU,0 | |
2152 movlw 0x00 | |
2153 movwf TBLPTRH,0 | |
2154 movlw 0x00 | |
2155 movwf TBLPTRL,0 | |
126 | 2156 _endasm |
167 | 2157 |
126 | 2158 // cycle buffers |
2159 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
2160 { | |
2161 md_t = 0; | |
2162 for (md_i=0;md_i<16;md_i++) | |
2163 { | |
2164 if(md_pointer == 9) | |
164 | 2165 md_temp = char_O_hash[md_i]; |
126 | 2166 else |
2167 { | |
2168 _asm | |
167 | 2169 TBLRDPOSTINC |
2170 movff TABLAT,md_temp | |
126 | 2171 _endasm |
2172 } // else | |
167 | 2173 |
2174 md_buffer[md_i] = md_temp; | |
186 | 2175 md_state[md_i+16] = md_temp; |
2176 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
126 | 2177 } // for md_i 16 |
2178 | |
2179 for (md_i=0;md_i<18;md_i++) | |
2180 { | |
2181 for (md_j=0;md_j<48;md_j++) | |
2182 { | |
167 | 2183 md_state[md_j] ^= md_pi_subst[md_t]; |
126 | 2184 md_t = md_state[md_j]; |
2185 } // for md_j 48 | |
2186 md_t = (unsigned char)(md_t+1); | |
2187 } // for md_i 18 | |
164 | 2188 md_t = char_O_hash[15]; |
126 | 2189 |
2190 for (md_i=0;md_i<16;md_i++) | |
2191 { | |
167 | 2192 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
164 | 2193 md_t = char_O_hash[md_i]; |
126 | 2194 } // for md_i 16 |
2195 } // for md_pointer | |
116 | 2196 } // void deco_hash(void) |
184 | 2197 #endif |
116 | 2198 |
167 | 2199 ////////////////////////////////////////////////////////////////////////////// |
2200 // deco_clear_CNS_fraction | |
2201 // | |
116 | 2202 // new in v.101 |
167 | 2203 // |
116 | 2204 void deco_clear_CNS_fraction(void) |
2205 { | |
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2206 RESET_C_STACK |
237 | 2207 |
126 | 2208 CNS_fraction = 0.0; |
2209 char_O_CNS_fraction = 0; | |
167 | 2210 } |
116 | 2211 |
167 | 2212 ////////////////////////////////////////////////////////////////////////////// |
2213 // deco_calc_CNS_fraction | |
2214 // | |
116 | 2215 // new in v.101 |
2216 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
167 | 2217 // |
116 | 2218 // Input: char_I_actual_ppO2 |
292 | 2219 // char_I_step_is_1min : use 1min steps instead of 2sec. |
116 | 2220 // Output: char_O_CNS_fraction |
2221 // Uses and Updates: CNS_fraction | |
2222 // Uses: acutal_ppO2 | |
167 | 2223 // |
116 | 2224 void deco_calc_CNS_fraction(void) |
2225 { | |
167 | 2226 overlay float actual_ppO2; |
292 | 2227 overlay float time_factor = 1.0f; |
126 | 2228 RESET_C_STACK |
167 | 2229 |
237 | 2230 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); |
2231 assert( char_I_actual_ppO2 > 15 ); | |
2232 | |
126 | 2233 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
292 | 2234 if( char_I_step_is_1min ) |
2235 time_factor = 30.0f; | |
116 | 2236 |
126 | 2237 if (char_I_actual_ppO2 < 50) |
292 | 2238 ; // no changes |
126 | 2239 else if (char_I_actual_ppO2 < 60) |
292 | 2240 CNS_fraction += time_factor/(-54000.0 * actual_ppO2 + 54000.0); |
126 | 2241 else if (char_I_actual_ppO2 < 70) |
292 | 2242 CNS_fraction += time_factor/(-45000.0 * actual_ppO2 + 48600.0); |
126 | 2243 else if (char_I_actual_ppO2 < 80) |
292 | 2244 CNS_fraction += time_factor/(-36000.0 * actual_ppO2 + 42300.0); |
126 | 2245 else if (char_I_actual_ppO2 < 90) |
292 | 2246 CNS_fraction += time_factor/(-27000.0 * actual_ppO2 + 35100.0); |
126 | 2247 else if (char_I_actual_ppO2 < 110) |
292 | 2248 CNS_fraction += time_factor/(-18000.0 * actual_ppO2 + 27000.0); |
126 | 2249 else if (char_I_actual_ppO2 < 150) |
292 | 2250 CNS_fraction += time_factor/(-9000.0 * actual_ppO2 + 17100.0); |
126 | 2251 else if (char_I_actual_ppO2 < 160) |
292 | 2252 CNS_fraction += time_factor/(-22500.0 * actual_ppO2 + 37350.0); |
126 | 2253 else if (char_I_actual_ppO2 < 165) |
292 | 2254 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 | 2255 else if (char_I_actual_ppO2 < 170) |
292 | 2256 CNS_fraction += time_factor*0.00102; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 |
126 | 2257 else if (char_I_actual_ppO2 < 175) |
292 | 2258 CNS_fraction += time_factor*0.00136; |
126 | 2259 else if (char_I_actual_ppO2 < 180) |
292 | 2260 CNS_fraction += time_factor*0.00180; |
126 | 2261 else if (char_I_actual_ppO2 < 185) |
292 | 2262 CNS_fraction += time_factor*0.00237; |
126 | 2263 else if (char_I_actual_ppO2 < 190) |
292 | 2264 CNS_fraction += time_factor*0.00310; |
126 | 2265 else if (char_I_actual_ppO2 < 195) |
292 | 2266 CNS_fraction += time_factor*0.00401; |
126 | 2267 else if (char_I_actual_ppO2 < 200) |
292 | 2268 CNS_fraction += time_factor*0.00517; |
126 | 2269 else if (char_I_actual_ppO2 < 230) |
292 | 2270 CNS_fraction += time_factor*0.0209; |
126 | 2271 else |
292 | 2272 CNS_fraction += time_factor*0.0482; // value for 2.5 |
116 | 2273 |
126 | 2274 if (CNS_fraction > 2.5) |
2275 CNS_fraction = 2.5; | |
2276 if (CNS_fraction < 0.0) | |
2277 CNS_fraction = 0.0; | |
2278 | |
2279 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
167 | 2280 } |
116 | 2281 |
167 | 2282 ////////////////////////////////////////////////////////////////////////////// |
2283 // deco_calc_CNS_decrease_15min | |
2284 // | |
116 | 2285 // new in v.101 |
167 | 2286 // |
116 | 2287 // calculates the half time of 90 minutes in 6 steps of 15 min |
200 | 2288 // (Used in sleepmode, for low battery mode). |
167 | 2289 // |
116 | 2290 // Output: char_O_CNS_fraction |
2291 // Uses and Updates: CNS_fraction | |
167 | 2292 // |
116 | 2293 void deco_calc_CNS_decrease_15min(void) |
2294 { | |
237 | 2295 RESET_C_STACK |
2296 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
2297 | |
126 | 2298 CNS_fraction = 0.890899 * CNS_fraction; |
167 | 2299 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
2300 } | |
116 | 2301 |
167 | 2302 ////////////////////////////////////////////////////////////////////////////// |
2303 // deco_calc_percentage | |
2304 // | |
116 | 2305 // new in v.101 |
167 | 2306 // |
116 | 2307 // calculates int_I_temp * char_I_temp / 100 |
2308 // output is int_I_temp | |
200 | 2309 // |
2310 // Used to compute NoFly remaining time. | |
222
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2311 // |
116 | 2312 void deco_calc_percentage(void) |
2313 { | |
122
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2314 RESET_C_STACK |
222
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2315 |
237 | 2316 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
2317 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
2318 | |
222
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2319 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
237 | 2320 |
2321 assert( int_I_temp < 1440 ); // Less than 24h... | |
222
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2322 } |
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2323 |
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2324 |
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2325 ////////////////////////////////////////////////////////////////////////////// |
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2326 // deco_gas_volumes |
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2327 // |
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2328 // new in v.111 |
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2329 // |
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2330 // calculates volumes for each gas. |
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2331 // |
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2332 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
240
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2333 // Gas list. |
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2334 // char_I_first_gas is the bottom gas. |
222
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2335 // decoplan (char_O_deco_depth, char_O_deco_time). |
234
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2336 // CF#54 == TRUE if shallowest stop first. |
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2337 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) or bar/min. |
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2338 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0) or bar/min. |
224 | 2339 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
222
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2340 // |
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2341 void deco_gas_volumes(void) |
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2342 { |
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2343 overlay float volumes[5]; |
265 | 2344 overlay float bottom_usage, ascent_usage; |
234
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2345 overlay unsigned char i, deepest_first; |
241 | 2346 overlay unsigned char gas; |
222
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2347 RESET_C_STACK |
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2348 |
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2349 //---- initialize with bottom consumption -------------------------------- |
240
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2350 for(i=0; i<5; ++i) // Nothing yet... |
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2351 volumes[i] = 0.0; |
222
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2352 |
241 | 2353 assert(1 <= char_I_first_gas && char_I_first_gas <= 5); |
2354 gas = char_I_first_gas - 1; | |
2355 | |
265 | 2356 bottom_usage = read_custom_function(56) * 0.1; |
2357 if( bottom_usage > 0.0 ) | |
2358 volumes[gas] | |
2359 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
2360 * char_I_bottom_time // in minutes. | |
2361 * bottom_usage; // In liter/minutes. | |
2362 else | |
2363 volumes[gas] = 65535.0; | |
222
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2364 |
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2365 //---- Ascent usage ------------------------------------------------------ |
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2366 |
234
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2367 deepest_first = read_custom_function(54) == 0; |
240
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2368 ascent_usage = read_custom_function(57) * 0.1; // In liter/minutes. |
222
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2369 |
224 | 2370 // Usage up to the first stop: |
2371 // - computed at MAX depth (easier, safer), | |
222
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2372 // - with an ascent speed of 10m/min. |
224 | 2373 // - with ascent litter / minutes. |
222
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2374 // - still using bottom gas: |
265 | 2375 if( ascent_usage > 0.0 ) |
2376 volumes[gas] | |
2377 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar | |
2378 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) | |
2379 * ascent_usage; // Consumption ( xxx / min @ 1 bar) | |
2380 else | |
2381 volumes[gas] = 65535.0; | |
222
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2382 |
234
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2383 for(i=0; i<32; ++i) |
222
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2384 { |
241 | 2385 overlay unsigned char j; |
234
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2386 overlay unsigned char depth, time, ascent; |
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2387 |
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2388 // Manage stops in reverse order (CF#54) |
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2389 if( deepest_first ) |
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2390 { |
241 | 2391 time = char_O_deco_time[i]; |
234
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2392 if( time == 0 ) break; // End of table: done. |
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2393 |
288
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2394 ascent = depth = char_O_deco_depth[i] & 0x7F; |
234
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2395 if( i < 31 ) |
288
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2396 ascent -= char_O_deco_depth[i+1] & 0x7F; |
234
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2397 } |
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2398 else |
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2399 { |
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2400 time = char_O_deco_time[31-i]; |
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2401 if( time == 0 ) continue; // not yet: still searh table. |
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2402 |
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2403 ascent = depth = char_O_deco_depth[31-i] & 0x7F; |
234
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2404 if( i < 31 ) |
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2405 ascent -= char_O_deco_depth[30-i] & 0x7F; |
234
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2406 } |
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2407 |
222
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2408 // Gas switch depth ? |
241 | 2409 for(j=0; j<5; ++j) |
222
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2410 { |
234
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2411 if( depth <= char_I_deco_gas_change[j] ) |
241 | 2412 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
224 | 2413 gas = j; |
222
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2414 } |
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2415 |
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2416 // usage during stop: |
224 | 2417 // Note: because first gas is not in there, increment gas+1 |
265 | 2418 if( ascent_usage > 0.0 ) |
2419 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. | |
2420 * time // in minutes. | |
2421 * ascent_usage // in xxx / min @ 1bar. | |
2422 // Plus usage during ascent to the next stop, at 10m/min. | |
2423 + (depth*0.1 + 1.0) | |
275
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2424 * ascent*0.1 // metre --> min |
265 | 2425 * ascent_usage; |
2426 else | |
2427 volumes[gas] = 65535.0; | |
222
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2428 } |
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2429 |
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2430 //---- convert results for the ASM interface ----------------------------- |
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2431 for(i=0; i<5; ++i) |
224 | 2432 if( volumes[i] > 6553.4 ) |
2433 int_O_gas_volumes[i] = 65535; | |
222
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2434 else |
224 | 2435 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
116 | 2436 } |
2437 | |
167 | 2438 ////////////////////////////////////////////////////////////////////////////// |
2439 | |
116 | 2440 void deco_push_tissues_to_vault(void) |
2441 { | |
167 | 2442 overlay unsigned char x; |
122
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2443 RESET_C_STACK |
167 | 2444 |
116 | 2445 cns_vault = CNS_fraction; |
167 | 2446 for (x=0;x<32;x++) |
2447 pres_tissue_vault[x] = pres_tissue[x]; | |
116 | 2448 } |
167 | 2449 |
116 | 2450 void deco_pull_tissues_from_vault(void) |
2451 { | |
167 | 2452 overlay unsigned char x; |
122
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2453 RESET_C_STACK |
167 | 2454 |
2455 for (x=0;x<32;x++) | |
2456 pres_tissue[x] = pres_tissue_vault[x]; | |
292 | 2457 |
2458 // Restore both CNS variable, too. | |
2459 CNS_fraction = cns_vault; | |
2460 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); | |
116 | 2461 } |
2462 | |
167 | 2463 ////////////////////////////////////////////////////////////////////////////// |
2464 // | |
184 | 2465 #ifndef CROSS_COMPILE |
2466 void main() {} | |
2467 #endif |