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annotate code_part1/OSTC_code_c_part2/p2_deco.c @ 294:4e43476b5a63
Menu3 marker bugbix
author | Heinrichsweikamp |
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date | Tue, 26 Apr 2011 18:57:50 +0200 |
parents | 21a0f7393468 |
children | e0083f259552 |
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. |
257
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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. |
116 | 77 // |
167 | 78 // TODO: |
79 // + Allow to abort MD2 calculation (have to restart next time). | |
80 // | |
81 // Literature: | |
200 | 82 // Bühlmann, Albert: Tauchmedizin; 4. Auflage [2002]; |
116 | 83 // 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 |
84 // Morrison, Stuart; 2000; DIY DECOMPRESSION; http://www.lizardland.co.uk/DIYDeco.html | |
85 // Balthasar, Steffen; Dekompressionstheorie I: Neo Haldane Modelle; http://www.txfreak.de/dekompressionstheorie_1.pdf | |
86 // Baker, Erik C.; Clearing Up The Confusion About "Deep Stops" | |
87 // Baker, Erik C.; Understanding M-values; http://www.txfreak.de/understanding_m-values.pdf | |
167 | 88 // |
89 // | |
116 | 90 |
91 // ********************* | |
92 // ** I N C L U D E S ** | |
93 // ********************* | |
94 #include <math.h> | |
167 | 95 |
192 | 96 // *********************************************** |
97 // ** V A R I A B L E S D E F I N I T I O N S ** | |
98 // *********************************************** | |
99 | |
100 #include "p2_definitions.h" | |
275
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101 #define TEST_MAIN |
192 | 102 #include "shared_definitions.h" |
103 | |
200 | 104 // Water vapour partial pressure in the lumb. |
233 | 105 #define ppWVapour 0.0627 |
200 | 106 |
167 | 107 // ************************* |
108 // ** P R O T O T Y P E S ** | |
109 // ************************* | |
110 | |
111 static void calc_hauptroutine(void); | |
112 static void calc_nullzeit(void); | |
113 | |
192 | 114 static void calc_tissue(PARAMETER unsigned char period); |
258 | 115 static void calc_limit(void); |
192 | 116 |
167 | 117 static void clear_tissue(void); |
118 static void calc_ascenttime(void); | |
119 static void update_startvalues(void); | |
169
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120 static void clear_deco_table(void); |
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121 static void update_deco_table(void); |
192 | 122 |
123 static void backup_sim_pres_tissue(void); | |
124 static void restore_sim_pres_tissue(void); | |
125 static void sim_tissue(PARAMETER unsigned char period); | |
126 static void sim_limit(PARAMETER float GF_current); | |
167 | 127 static void calc_gradient_factor(void); |
128 static void calc_wo_deco_step_1_min(void); | |
129 | |
130 static void calc_hauptroutine_data_input(void); | |
131 static void calc_hauptroutine_update_tissues(void); | |
132 static void calc_hauptroutine_calc_deco(void); | |
169
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133 static void sim_ascent_to_first_stop(void); |
167 | 134 |
241 | 135 static unsigned char gas_switch_deepest(void); |
136 static void gas_switch_set(void); | |
217 | 137 |
241 | 138 static unsigned char calc_nextdecodepth(void); |
116 | 139 |
200 | 140 //---- Bank 4 parameters ----------------------------------------------------- |
163 | 141 #pragma udata bank4=0x400 |
116 | 142 |
143 static float temp_limit; | |
144 static float GF_low; | |
145 static float GF_high; | |
146 static float GF_delta; | |
275
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147 static float low_depth; // Depth of deepest stop |
192 | 148 static float locked_GF_step; // GF_delta / low_depth |
149 | |
150 static unsigned char temp_depth_limit; | |
171 | 151 |
192 | 152 // Simulation context: used to predict ascent. |
153 static unsigned char sim_lead_tissue_no; // Leading compatiment number. | |
154 static float sim_lead_tissue_limit; // Buhlmann tolerated pressure. | |
116 | 155 |
192 | 156 // Real context: what we are doing now. |
157 static float calc_lead_tissue_limit; // | |
116 | 158 |
169
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159 static unsigned char internal_deco_time[32]; |
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160 static unsigned char internal_deco_depth[32]; |
116 | 161 |
162 static float cns_vault; | |
163 static float pres_tissue_vault[32]; | |
164 | |
163 | 165 //---- Bank 5 parameters ----------------------------------------------------- |
166 #pragma udata bank5=0x500 | |
167 | |
167 | 168 static unsigned char ci; |
116 | 169 static float pres_respiration; |
170 static float pres_surface; | |
171 static float temp_deco; | |
236 | 172 static float ppN2; |
200 | 173 static float ppHe; |
116 | 174 static float temp_tissue; |
200 | 175 static float N2_ratio; // Breathed gas nitrogen ratio. |
176 static float He_ratio; // Breathed gas helium ratio. | |
177 static float var_N2_a; // Bühlmann a, for current N2 tissue. | |
178 static float var_N2_b; // Bühlmann b, for current N2 tissue. | |
179 static float var_He_a; // Bühlmann a, for current He tissue. | |
180 static float var_He_b; // Bühlmann b, for current He tissue. | |
181 static float var_N2_e; // Exposition, for current N2 tissue. | |
182 static float var_He_e; // Exposition, for current He tissue. | |
116 | 183 |
164 | 184 static float pres_diluent; // new in v.101 |
185 static float const_ppO2; // new in v.101 | |
186 static float deco_ppO2_change; // new in v.101 | |
187 static float deco_ppO2; // new in v.101 | |
116 | 188 |
241 | 189 static unsigned char sim_gas_last_depth; // Depth of last used gas, to detected a gas switch. |
190 static unsigned char sim_gas_last_used; // Number of last used gas, to detected a gas switch. | |
203 | 191 static unsigned short sim_gas_delay; // Time of gas-switch-stop ends [min on dive]. |
192 static unsigned short sim_dive_mins; // Simulated dive time. | |
200 | 193 static float calc_N2_ratio; // Simulated (switched) nitrogen ratio. |
194 static float calc_He_ratio; // Simulated (switched) helium ratio. | |
195 static float CNS_fraction; // new in v.101 | |
196 static float float_saturation_multiplier; // new in v.101 | |
197 static float float_desaturation_multiplier; // new in v.101 | |
167 | 198 static float float_deco_distance; // new in v.101 |
199 static char flag_in_divemode; // new in v.108 | |
200 | |
225 | 201 static unsigned char deco_gas_change[5]; // new in v.109 |
167 | 202 |
163 | 203 //---- Bank 6 parameters ----------------------------------------------------- |
204 #pragma udata bank6=0x600 | |
116 | 205 |
197 | 206 float pres_tissue[32]; |
116 | 207 |
163 | 208 //---- Bank 7 parameters ----------------------------------------------------- |
209 #pragma udata bank7=0x700 | |
210 | |
197 | 211 float sim_pres_tissue[32]; // 32 floats = 128 bytes. |
116 | 212 static float sim_pres_tissue_backup[32]; |
213 | |
163 | 214 //---- Bank 8 parameters ----------------------------------------------------- |
116 | 215 #pragma udata bank8=0x800 |
163 | 216 |
116 | 217 static char md_pi_subst[256]; |
122
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218 #define C_STACK md_pi_subst // Overlay C-code data stack here, too. |
116 | 219 |
163 | 220 //---- Bank 9 parameters ----------------------------------------------------- |
167 | 221 #pragma udata bank9=0x900 |
116 | 222 |
163 | 223 static char md_state[48]; // DONT MOVE !! // has to be at the beginning of bank 9 for the asm code!!! |
116 | 224 |
164 | 225 // internal, dbg: |
167 | 226 static unsigned char DBG_char_I_deco_model; // new in v.108. |
164 | 227 static unsigned char DBG_char_I_depth_last_deco; // new in v.108 |
212 | 228 static unsigned char DBG_deco_gas_change; // new in v.108 |
224 | 229 static unsigned char DBG_deco_N2_ratio; // new in v.108 |
230 static unsigned char DBG_deco_He_ratio; // new in v.108 | |
164 | 231 static float DBG_pres_surface; // new in v.108 |
232 static float DBG_GF_low; // new in v.108 | |
233 static float DBG_GF_high; // new in v.108 | |
234 static float DBG_const_ppO2; // new in v.108 | |
235 static float DBG_deco_ppO2_change; // new in v.108 | |
236 static float DBG_deco_ppO2; // new in v.108 | |
237 static float DBG_float_saturation_multiplier; // new in v.108 | |
238 static float DBG_float_desaturation_multiplier; // new in v.108 | |
239 static float DBG_float_deco_distance; // new in v.108 | |
240 static float DBG_N2_ratio; // new in v.108 | |
241 static float DBG_He_ratio; // new in v.108 | |
242 | |
167 | 243 ////////////////////////////////////////////////////////////////////////////// |
244 ////////////////////////////////////////////////////////////////////////////// | |
245 ///////////////////////////// THE LOOKUP TABLES ////////////////////////////// | |
246 ////////////////////////////////////////////////////////////////////////////// | |
247 ////////////////////////////////////////////////////////////////////////////// | |
248 // | |
249 // End of PROM code is 17F00, So push tables on PROM top... | |
250 // | |
251 #pragma romdata buhlmann_tables = 0x017B00 // Needs to be in UPPER bank. | |
252 #include "p2_tables.romdata" // new table for deco_main_v.101 (var_N2_a modified) | |
116 | 253 |
167 | 254 // Magic table to compute the MD2 HASH |
255 // | |
256 #pragma romdata hash_tables = 0x017E00 // Address fixed by ASM access... | |
203 | 257 rom const rom unsigned short md_pi[] = |
116 | 258 { |
259 0x292E, 0x43C9, 0xA2D8, 0x7C01, 0x3D36, 0x54A1, 0xECF0, 0x0613 | |
260 , 0x62A7, 0x05F3, 0xC0C7, 0x738C, 0x9893, 0x2BD9, 0xBC4C, 0x82CA | |
261 , 0x1E9B, 0x573C, 0xFDD4, 0xE016, 0x6742, 0x6F18, 0x8A17, 0xE512 | |
262 , 0xBE4E, 0xC4D6, 0xDA9E, 0xDE49, 0xA0FB, 0xF58E, 0xBB2F, 0xEE7A | |
263 , 0xA968, 0x7991, 0x15B2, 0x073F, 0x94C2, 0x1089, 0x0B22, 0x5F21 | |
264 , 0x807F, 0x5D9A, 0x5A90, 0x3227, 0x353E, 0xCCE7, 0xBFF7, 0x9703 | |
265 , 0xFF19, 0x30B3, 0x48A5, 0xB5D1, 0xD75E, 0x922A, 0xAC56, 0xAAC6 | |
266 , 0x4FB8, 0x38D2, 0x96A4, 0x7DB6, 0x76FC, 0x6BE2, 0x9C74, 0x04F1 | |
267 , 0x459D, 0x7059, 0x6471, 0x8720, 0x865B, 0xCF65, 0xE62D, 0xA802 | |
268 , 0x1B60, 0x25AD, 0xAEB0, 0xB9F6, 0x1C46, 0x6169, 0x3440, 0x7E0F | |
269 , 0x5547, 0xA323, 0xDD51, 0xAF3A, 0xC35C, 0xF9CE, 0xBAC5, 0xEA26 | |
270 , 0x2C53, 0x0D6E, 0x8528, 0x8409, 0xD3DF, 0xCDF4, 0x4181, 0x4D52 | |
271 , 0x6ADC, 0x37C8, 0x6CC1, 0xABFA, 0x24E1, 0x7B08, 0x0CBD, 0xB14A | |
272 , 0x7888, 0x958B, 0xE363, 0xE86D, 0xE9CB, 0xD5FE, 0x3B00, 0x1D39 | |
273 , 0xF2EF, 0xB70E, 0x6658, 0xD0E4, 0xA677, 0x72F8, 0xEB75, 0x4B0A | |
274 , 0x3144, 0x50B4, 0x8FED, 0x1F1A, 0xDB99, 0x8D33, 0x9F11, 0x8314 | |
275 }; | |
276 | |
167 | 277 ////////////////////////////////////////////////////////////////////////////// |
278 ////////////////////////////////////////////////////////////////////////////// | |
279 ////////////////////////////// THE SUBROUTINES /////////////////////////////// | |
280 ////////////////////////////////////////////////////////////////////////////// | |
281 ////////////////////////////////////////////////////////////////////////////// | |
282 // | |
116 | 283 // all new in v.102 |
284 // moved from 0x0D000 to 0x0C000 in v.108 | |
285 | |
286 #pragma code p2_deco = 0x0C000 | |
287 | |
167 | 288 ////////////////////////////////////////////////////////////////////////////// |
289 // DBS - debug on start of dive | |
290 // | |
291 static void create_dbs_set_dbg_and_ndl20mtr(void) | |
116 | 292 { |
167 | 293 overlay char i; // Local loop index. |
294 | |
295 //---- Reset DEBUG bit fields -------------------------------------------- | |
116 | 296 int_O_DBS_bitfield = 0; |
297 int_O_DBS2_bitfield = 0; | |
298 if(int_O_DBG_pre_bitfield & DBG_RUN) | |
299 int_O_DBG_pre_bitfield = DBG_RESTART; | |
300 else | |
301 int_O_DBG_pre_bitfield = DBG_RUN; | |
302 int_O_DBG_post_bitfield = 0; | |
167 | 303 |
304 //---- Set 20meters ND limit --------------------------------------------- | |
116 | 305 char_O_NDL_at_20mtr = 255; |
306 | |
167 | 307 //---- Copy all dive parameters ------------------------------------------ |
116 | 308 DBG_N2_ratio = N2_ratio; |
309 DBG_He_ratio = He_ratio; | |
310 DBG_char_I_deco_model = char_I_deco_model; | |
311 DBG_char_I_depth_last_deco = char_I_depth_last_deco; | |
312 DBG_pres_surface = pres_surface; | |
313 DBG_GF_low = GF_low; | |
314 DBG_GF_high = GF_high; | |
315 DBG_const_ppO2 = const_ppO2; | |
316 DBG_deco_ppO2_change = deco_ppO2_change; | |
317 DBG_deco_ppO2 = deco_ppO2; | |
224 | 318 DBG_deco_N2_ratio = char_I_deco_N2_ratio[0]; |
319 DBG_deco_He_ratio = char_I_deco_He_ratio[0]; | |
225 | 320 DBG_deco_gas_change = deco_gas_change[0]; |
116 | 321 DBG_float_saturation_multiplier = float_saturation_multiplier; |
322 DBG_float_desaturation_multiplier = float_desaturation_multiplier; | |
323 DBG_float_deco_distance = float_deco_distance; | |
324 | |
167 | 325 //---- Setup some error (?) conditions ----------------------------------- |
116 | 326 if(char_I_deco_model) |
327 int_O_DBS_bitfield |= DBS_mode; | |
328 if(const_ppO2) | |
329 int_O_DBS_bitfield |= DBS_ppO2; | |
167 | 330 for(i = 16; i < 32; i++) |
331 if(pres_tissue[i]) | |
116 | 332 int_O_DBS_bitfield |= DBS_HE_sat; |
333 if(deco_ppO2_change) | |
334 int_O_DBS_bitfield |= DBS_ppO2chg; | |
335 if(float_saturation_multiplier < 0.99) | |
336 int_O_DBS_bitfield |= DBS_SAT2l; | |
337 if(float_saturation_multiplier > 1.3) | |
338 int_O_DBS_bitfield |= DBS_SAT2h; | |
339 if(GF_low < 0.19) | |
340 int_O_DBS_bitfield |= DBS_GFLOW2l; | |
341 if(GF_low > 1.01) | |
342 int_O_DBS_bitfield |= DBS_GFLOW2h; | |
343 if(GF_high < 0.6) | |
344 int_O_DBS_bitfield |= DBS_GFHGH2l; | |
345 if(GF_high > 1.01) | |
346 int_O_DBS_bitfield |= DBS_GFHGH2h; | |
347 if((N2_ratio + He_ratio) > 0.95) | |
348 int_O_DBS_bitfield |= DBS_GASO22l; | |
349 if((N2_ratio + He_ratio) < 0.05) | |
350 int_O_DBS_bitfield |= DBS_GASO22h; | |
351 if(float_deco_distance > 0.25) | |
352 int_O_DBS_bitfield |= DBS_DIST2h; | |
353 if(char_I_depth_last_deco > 8) | |
354 int_O_DBS_bitfield |= DBS_LAST2h; | |
224 | 355 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) > 95)) |
116 | 356 int_O_DBS_bitfield |= DBS_DECOO2l; |
224 | 357 if(DBG_deco_gas_change && ((char_I_deco_N2_ratio[0] + char_I_deco_He_ratio[0]) < 5)) |
116 | 358 int_O_DBS_bitfield |= DBS_DECOO2h; |
359 if(pres_respiration > 3.0) | |
360 int_O_DBS2_bitfield |= DBS2_PRES2h; | |
361 if(pres_surface - pres_respiration > 0.2) | |
362 int_O_DBS2_bitfield |= DBS2_PRES2l; | |
363 if(pres_surface < 0.75) | |
364 int_O_DBS2_bitfield |= DBS2_SURF2l; | |
365 if(pres_surface > 1.11) | |
366 int_O_DBS2_bitfield |= DBS2_SURF2h; | |
367 if(float_desaturation_multiplier < 0.70) | |
368 int_O_DBS2_bitfield |= DBS2_DESAT2l; | |
369 if(float_desaturation_multiplier > 1.01) | |
370 int_O_DBS2_bitfield |= DBS2_DESAT2h; | |
371 if(GF_low > GF_high) | |
372 int_O_DBS2_bitfield |= DBS2_GFDneg; | |
373 } | |
374 | |
167 | 375 ////////////////////////////////////////////////////////////////////////////// |
376 // DBG - set DBG to end_of_dive | |
377 // | |
378 static void set_dbg_end_of_dive(void) | |
116 | 379 { |
380 int_O_DBG_pre_bitfield &= (~DBG_RUN); | |
381 int_O_DBG_post_bitfield &= (~DBG_RUN); | |
382 } | |
383 | |
167 | 384 ////////////////////////////////////////////////////////////////////////////// |
385 // DBG - NDL at first 20 m. hit | |
386 // | |
387 static void check_ndl(void) | |
116 | 388 { |
167 | 389 if( char_O_NDL_at_20mtr == 255 // Still in NDL mode ? |
390 && int_I_pres_respiration > 3000 // And we hit the 20m limit ? | |
391 ) | |
116 | 392 { |
167 | 393 char_O_NDL_at_20mtr = char_O_nullzeit; // change to max bottom time. |
394 if( char_O_NDL_at_20mtr == 255) // and avoid confusion. | |
184 | 395 char_O_NDL_at_20mtr = 254; |
116 | 396 } |
397 } | |
398 | |
167 | 399 ////////////////////////////////////////////////////////////////////////////// |
400 // DBG - multi main during dive | |
401 // | |
184 | 402 static void check_dbg(PARAMETER char is_post_check) |
116 | 403 { |
203 | 404 overlay unsigned short temp_DBS = 0; |
200 | 405 overlay unsigned char i; // Local loop index. |
167 | 406 |
116 | 407 if( (DBG_N2_ratio != N2_ratio) || (DBG_He_ratio != He_ratio) ) |
408 temp_DBS |= DBG_c_gas; | |
409 if(DBG_const_ppO2 != const_ppO2) | |
410 temp_DBS |= DBG_c_ppO2; | |
167 | 411 if( DBG_float_saturation_multiplier != float_saturation_multiplier |
412 || DBG_float_desaturation_multiplier != float_desaturation_multiplier | |
413 ) | |
116 | 414 temp_DBS |= DBG_CdeSAT; |
415 if(DBG_char_I_deco_model != char_I_deco_model) | |
416 temp_DBS |= DBG_C_MODE; | |
417 if(DBG_pres_surface != pres_surface) | |
418 temp_DBS |= DBG_C_SURF; | |
167 | 419 |
420 if( !DBS_HE_sat && !He_ratio) | |
421 for(i = 16; i < 32; i++) | |
422 if(pres_tissue[i]) | |
116 | 423 temp_DBS |= DBG_HEwoHE; |
167 | 424 |
116 | 425 if(DBG_deco_ppO2 != deco_ppO2) |
426 temp_DBS |= DBG_C_DPPO2; | |
167 | 427 |
225 | 428 if( DBG_deco_gas_change != deco_gas_change[0] |
224 | 429 || DBG_deco_N2_ratio != char_I_deco_N2_ratio[0] |
430 || DBG_deco_He_ratio != char_I_deco_He_ratio[0] ) | |
116 | 431 temp_DBS |= DBG_C_DGAS; |
167 | 432 |
116 | 433 if(DBG_float_deco_distance != float_deco_distance) |
434 temp_DBS |= DBG_C_DIST; | |
435 if(DBG_char_I_depth_last_deco != char_I_depth_last_deco) | |
436 temp_DBS |= DBG_C_LAST; | |
167 | 437 if( DBG_GF_low != GF_low |
438 || DBG_GF_high != GF_high ) | |
116 | 439 temp_DBS |= DBG_C_GF; |
440 if(pres_respiration > 13.0) | |
441 temp_DBS |= DBG_PHIGH; | |
442 if(pres_surface - pres_respiration > 0.2) | |
443 temp_DBS |= DBG_PLOW; | |
444 if(is_post_check) | |
445 int_O_DBG_post_bitfield |= temp_DBS; | |
446 else | |
447 int_O_DBG_pre_bitfield |= temp_DBS; | |
448 } | |
449 | |
167 | 450 ////////////////////////////////////////////////////////////////////////////// |
451 // DBG - prior to calc. of dive | |
452 // | |
453 static void check_pre_dbg(void) | |
116 | 454 { |
455 check_dbg(0); | |
456 } | |
457 | |
167 | 458 ////////////////////////////////////////////////////////////////////////////// |
459 // DBG - after decocalc of dive | |
460 // | |
461 static void check_post_dbg(void) | |
116 | 462 { |
463 check_dbg(1); | |
464 } | |
465 | |
165 | 466 ////////////////////////////////////////////////////////////////////////////// |
167 | 467 ////////////////////////////////////////////////////////////////////////////// |
468 /////////////////////// U T I L I T I E S ///////////////////////////////// | |
469 ////////////////////////////////////////////////////////////////////////////// | |
470 ////////////////////////////////////////////////////////////////////////////// | |
471 | |
235 | 472 ////////////////////////////////////////////////////////////////////////////// |
257
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473 // Bump to blue-screen when an assert is wrong |
235 | 474 #ifdef __DEBUG |
475 void assert_failed(PARAMETER short int line) | |
476 { | |
477 extern void PLED_resetdebugger(void); | |
478 extern unsigned short temp10; | |
479 | |
257
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480 temp10 = line; // Show source line number as stack depth. |
235 | 481 PLED_resetdebugger(); |
482 } | |
483 #endif | |
257
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484 |
235 | 485 ////////////////////////////////////////////////////////////////////////////// |
486 // When calling C code from ASM context, the data stack pointer and | |
487 // frames should be reset. Bank8 is used by stack, when not doing hashing. | |
488 | |
489 #ifdef CROSS_COMPILE | |
490 # define RESET_C_STACK | |
491 #else | |
492 # ifdef __DEBUG | |
493 # define RESET_C_STACK fillDataStack(); | |
494 void fillDataStack(void) | |
495 { | |
496 _asm | |
497 LFSR 1,C_STACK | |
498 MOVLW 0xCC | |
499 loop: MOVWF POSTINC1,0 | |
500 TSTFSZ FSR1L,0 | |
501 BRA loop | |
502 | |
503 LFSR 1,C_STACK | |
504 LFSR 2,C_STACK | |
505 _endasm | |
506 } | |
507 # else | |
508 # define RESET_C_STACK \ | |
509 _asm \ | |
510 LFSR 1, C_STACK \ | |
511 LFSR 2, C_STACK \ | |
512 _endasm | |
513 # endif | |
514 #endif | |
515 | |
516 ////////////////////////////////////////////////////////////////////////////// | |
257
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517 // Read CF values from the C code. |
235 | 518 |
203 | 519 static short read_custom_function(PARAMETER unsigned char cf) |
167 | 520 { |
184 | 521 #ifdef CROSS_COMPILE |
522 extern unsigned short custom_functions[]; | |
523 return custom_functions[cf]; | |
524 #else | |
167 | 525 extern unsigned char hi, lo; |
526 extern void getcustom15(); | |
527 _asm | |
528 movff cf,WREG | |
529 call getcustom15,0 | |
530 movff lo,PRODL | |
531 movff hi,PRODH | |
532 _endasm | |
184 | 533 #endif |
167 | 534 } |
535 | |
536 ////////////////////////////////////////////////////////////////////////////// | |
257
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537 // Fast subroutine to read RTC timer 3. |
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538 // Note: result is in 1/32 of msecs. |
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539 static unsigned short tmr3(void) |
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540 { |
261 | 541 #ifndef CROSS_COMPILE |
257
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542 _asm |
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543 movff 0xfb2,PRODL // TMR3L |
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544 movff 0xfb3,PRODH // TMR3H |
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545 _endasm // result in PRODH:PRODL. |
261 | 546 #else |
547 return 0; | |
548 #endif | |
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549 } |
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550 |
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551 ////////////////////////////////////////////////////////////////////////////// |
258 | 552 // read buhlmann tables A and B for compatriment ci |
553 // | |
554 static void read_buhlmann_coefficients(void) | |
165 | 555 { |
184 | 556 #ifndef CROSS_COMPILE |
167 | 557 // Note: we don't use far rom pointer, because the |
558 // 24 bits is to complex, hence we have to set | |
559 // the UPPER page ourself... | |
560 // --> Set zero if tables are moved to lower pages ! | |
561 _asm | |
562 movlw 1 | |
563 movwf TBLPTRU,0 | |
564 _endasm | |
184 | 565 #endif |
258 | 566 |
197 | 567 assert( 0 <= ci && ci < 16 ); |
165 | 568 var_N2_a = buhlmann_a[ci]; |
569 var_N2_b = buhlmann_b[ci]; | |
167 | 570 var_He_a = (buhlmann_a+16)[ci]; |
571 var_He_b = (buhlmann_b+16)[ci]; | |
572 | |
165 | 573 // Check reading consistency: |
574 if( (var_N2_a < 0.231) | |
575 || (var_N2_a > 1.27) | |
576 || (var_N2_b < 0.504) | |
577 || (var_N2_b > 0.966) | |
578 || (var_He_a < 0.510) | |
579 || (var_He_a > 1.75) | |
580 || (var_He_b < 0.423) | |
581 || (var_He_b > 0.927) | |
582 ) | |
258 | 583 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; |
584 } | |
585 | |
586 ////////////////////////////////////////////////////////////////////////////// | |
587 // read buhlmann tables for compatriment ci | |
588 // If period == 0 : 2sec interval | |
589 // 1 : 1 min interval | |
590 // 2 : 10 min interval. | |
591 static void read_buhlmann_times(PARAMETER char period) | |
592 { | |
593 #ifndef CROSS_COMPILE | |
594 // Note: we don't use far rom pointer, because the | |
595 // 24 bits is to complex, hence we have to set | |
596 // the UPPER page ourself... | |
597 // --> Set zero if tables are moved to lower pages ! | |
598 _asm | |
599 movlw 1 | |
600 movwf TBLPTRU,0 | |
601 _endasm | |
602 #endif | |
603 assert( 0 <= ci && ci < 16 ); | |
604 | |
165 | 605 // Integration intervals. |
167 | 606 switch(period) |
165 | 607 { |
608 case 0: //---- 2 sec ----------------------------------------------------- | |
609 var_N2_e = e2secs[ci]; | |
167 | 610 var_He_e = (e2secs+16)[ci]; |
165 | 611 |
612 // Check reading consistency: | |
613 if( (var_N2_e < 0.0000363) | |
614 || (var_N2_e > 0.00577) | |
615 || (var_He_e < 0.0000961) | |
616 || (var_He_e > 0.150) | |
617 ) | |
618 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
619 | |
620 break; | |
621 | |
622 case 1: //---- 1 min ----------------------------------------------------- | |
623 var_N2_e = e1min[ci]; | |
167 | 624 var_He_e = (e1min+16)[ci]; |
165 | 625 |
626 // Check reading consistency: | |
627 if( (var_N2_e < 1.09E-3) | |
628 || (var_N2_e > 0.1592) | |
629 || (var_He_e < 0.00288) | |
630 || (var_He_e > 0.3682) | |
631 ) | |
632 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
633 | |
634 break; | |
635 | |
636 case 2: //---- 10 min ---------------------------------------------------- | |
637 var_N2_e = e10min[ci]; | |
167 | 638 var_He_e = (e10min+16)[ci]; |
165 | 639 |
640 // Check reading consistency: | |
641 if( (var_N2_e < 0.01085) | |
642 || (var_N2_e > 0.82323) | |
643 || (var_He_e < 0.02846) | |
644 || (var_He_e > 0.98986) | |
645 ) | |
646 int_O_DBG_pre_bitfield |= DBG_ZH16ERR; | |
647 | |
648 break; | |
197 | 649 |
650 default: | |
651 assert(0); // Never go there... | |
165 | 652 } |
653 } | |
654 | |
655 ////////////////////////////////////////////////////////////////////////////// | |
167 | 656 // calc_next_decodepth_GF |
165 | 657 // |
116 | 658 // new in v.102 |
165 | 659 // |
116 | 660 // INPUT, changing during dive: |
192 | 661 // low_depth |
167 | 662 // |
116 | 663 // INPUT, fixed during dive: |
167 | 664 // pres_surface |
665 // GF_delta | |
666 // GF_high | |
667 // GF_low | |
171 | 668 // char_I_depth_last_deco |
167 | 669 // float_deco_distance |
670 // | |
241 | 671 // RETURN TRUE iff a stop is needed. |
672 // | |
116 | 673 // OUTPUT |
171 | 674 // locked_GF_step |
167 | 675 // temp_depth_limt |
192 | 676 // low_depth |
167 | 677 // |
241 | 678 static unsigned char calc_nextdecodepth(void) |
167 | 679 { |
241 | 680 //--- Max ascent speed --------------------------------------------------- |
681 // Recompute leading gas limit, at current depth: | |
682 overlay float depth = (temp_deco - pres_surface) / 0.09985; | |
683 | |
684 // At most, ascent 1 minute, at 10m/min == 10.0 m. | |
685 overlay float min_depth = depth - 10.0; | |
686 | |
687 // Do we need to stop at current depth ? | |
688 overlay unsigned char need_stop = 0; | |
689 | |
690 assert( depth >= -0.2 ); // Allow for 200mbar of weather change. | |
691 | |
212 | 692 //---- ZH-L16 + GRADIENT FACTOR model ------------------------------------ |
116 | 693 if (char_I_deco_model == 1) |
694 { | |
241 | 695 if( depth >= low_depth ) |
192 | 696 sim_limit( GF_low ); |
697 else | |
698 sim_limit( GF_high - depth * locked_GF_step ); | |
699 | |
700 // Stops are needed ? | |
701 if( sim_lead_tissue_limit > pres_surface ) | |
702 { | |
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703 // Compute tolerated depth, for the leading tissue [metre]: |
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704 overlay float depth_tol = (sim_lead_tissue_limit - pres_surface) / 0.09985; |
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705 |
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706 // Deepest stop, in multiples of 3 metres. |
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707 overlay unsigned char first_stop = 3 * (short)(0.99999 + depth_tol * 0.33333 ); |
192 | 708 assert( first_stop < 128 ); |
171 | 709 |
275
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710 // Is it a new deepest needed stop ? If yes this is the reference for |
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711 // the varying gradient factor. So reset that: |
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712 if( depth_tol > min_depth && depth_tol > low_depth ) |
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713 { |
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714 // Store the deepest stop depth, as reference for GF_low. |
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715 low_depth = depth_tol; |
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716 locked_GF_step = GF_delta / low_depth; |
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717 } |
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718 |
264 | 719 #if defined(__DEBUG) || defined(CROSS_COMPILE) |
261 | 720 { |
721 // Extra testing code to make sure the first_stop formula | |
722 // and rounding provides correct depth: | |
723 overlay float pres_stop = first_stop * 0.09985 // Meters to bar | |
724 + pres_surface; | |
725 | |
726 // Keep GF_low until a first stop depth is found: | |
727 if( first_stop >= low_depth ) | |
728 sim_limit( GF_low ); | |
729 else | |
730 // current GF is GF_high - alpha (GF_high - GF_low) | |
731 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
732 sim_limit( GF_high - first_stop * locked_GF_step ); | |
733 | |
734 // upper limit (lowest pressure tolerated): | |
735 assert( sim_lead_tissue_limit < pres_stop ); | |
736 } | |
737 #endif | |
738 | |
212 | 739 // Apply correction for the shallowest stop. |
192 | 740 if( first_stop == 3 ) // new in v104 |
741 first_stop = char_I_depth_last_deco; // Use last 3m..6m instead. | |
171 | 742 |
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743 // Because gradient factor at first_stop might be bigger than at |
261 | 744 // current depth, we might ascent a bit more. |
745 // Hence, check all stops until one is indeed higher than tolerated presure: | |
746 while(first_stop > 0) | |
192 | 747 { |
748 overlay unsigned char next_stop; // Next index (0..30) | |
749 overlay float pres_stop; // Next depth (0m..90m) | |
171 | 750 |
241 | 751 // Check max speed, or reaching surface. |
752 if( first_stop <= min_depth ) | |
753 break; | |
754 | |
755 // So, there is indeed a stop needed: | |
756 need_stop = 1; | |
757 | |
192 | 758 if( first_stop <= char_I_depth_last_deco ) // new in v104 |
759 next_stop = 0; | |
216 | 760 else if( first_stop == 6 ) |
761 next_stop = char_I_depth_last_deco; | |
192 | 762 else |
763 next_stop = first_stop - 3; // Index of next (upper) stop. | |
167 | 764 |
241 | 765 pres_stop = next_stop * 0.09985 // Meters to bar |
192 | 766 + pres_surface; |
767 | |
212 | 768 // Keep GF_low until a first stop depth is found: |
769 if( next_stop >= low_depth ) | |
770 sim_limit( GF_low ); | |
771 else | |
772 // current GF is GF_high - alpha (GF_high - GF_low) | |
773 // With alpha = currentDepth / maxDepth, hence in [0..1] | |
774 sim_limit( GF_high - next_stop * locked_GF_step ); | |
171 | 775 |
192 | 776 // upper limit (lowest pressure tolerated): |
777 if( sim_lead_tissue_limit >= pres_stop ) // check if ascent to next deco stop is ok | |
778 break; | |
779 | |
780 // Else, validate that stop and loop... | |
781 first_stop = next_stop; | |
212 | 782 } |
783 | |
784 // next stop is the last validated depth found, aka first_stop | |
275
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785 temp_depth_limit = first_stop; // Stop depth, in metre. |
192 | 786 } |
171 | 787 else |
275
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788 temp_depth_limit = 0; // stop depth, in metre. |
116 | 789 } |
167 | 790 else //---- ZH-L16 model ------------------------------------------------- |
116 | 791 { |
192 | 792 overlay float pres_gradient; |
793 | |
794 // Original model | |
116 | 795 // optimized in v.101 |
171 | 796 // char_I_depth_last_deco included in v.101 |
116 | 797 |
192 | 798 // Compute sim_lead_tissue_limit too, but just once. |
799 sim_limit(1.0); | |
800 | |
801 pres_gradient = sim_lead_tissue_limit - pres_surface; | |
167 | 802 if (pres_gradient >= 0) |
116 | 803 { |
241 | 804 pres_gradient /= 0.29955; // Bar --> stop number; |
275
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805 temp_depth_limit = 3 * (short) (pres_gradient + 0.99); // --> metre : depth for deco |
241 | 806 need_stop = 1; // Hit. |
807 | |
808 // Implement last stop at 4m/5m/6m... | |
809 if( temp_depth_limit == 3 ) | |
810 temp_depth_limit = char_I_depth_last_deco; | |
171 | 811 } |
116 | 812 else |
241 | 813 temp_depth_limit = 0; |
171 | 814 } |
212 | 815 |
217 | 816 //---- Check gas change -------------------------------------------------- |
241 | 817 need_stop |= gas_switch_deepest(); // Update temp_depth_limit if there is a change, |
818 | |
819 return need_stop; | |
167 | 820 } |
116 | 821 |
167 | 822 ////////////////////////////////////////////////////////////////////////////// |
169
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823 // copy_deco_table |
167 | 824 // |
169
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825 // Buffer the stops, once computed, so we can continue to display them |
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826 // while computing the next set. |
167 | 827 // |
169
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828 static void copy_deco_table(void) |
116 | 829 { |
169
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830 // Copy depth of the first (deepest) stop, because when reversing |
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831 // order, it will be hard to find... |
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832 char_O_first_deco_depth = internal_deco_depth[0] & 0x7F; |
169
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833 char_O_first_deco_time = internal_deco_time [0]; |
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834 |
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835 if( read_custom_function(54) & 1 ) //---- Should we reverse table ? ------ |
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836 { |
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837 overlay unsigned char x, y; |
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838 |
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839 //---- First: search the first non-null depth |
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840 for(x=31; x != 0; --x) |
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841 if( internal_deco_depth[x] != 0 ) break; |
116 | 842 |
169
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843 //---- Second: copy to output table (in reverse order) |
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844 for(y=0; y<32; y++, --x) |
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845 { |
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846 char_O_deco_depth[y] = internal_deco_depth[x]; |
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847 char_O_deco_time [y] = internal_deco_time [x]; |
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848 |
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849 // Stop only once the last transfer is done. |
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850 if( x == 0 ) break; |
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851 } |
116 | 852 |
169
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853 //---- Third: fill table end with null |
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854 for(y++; y<32; y++) |
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855 { |
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856 char_O_deco_time [y] = 0; |
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857 char_O_deco_depth[y] = 0; |
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858 } |
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859 } |
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860 else //---- Straight copy ------------------------------------------------ |
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861 { |
167 | 862 overlay unsigned char x; |
863 | |
169
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864 for(x=0; x<32; x++) |
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865 { |
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866 char_O_deco_depth[x] = internal_deco_depth[x]; |
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867 char_O_deco_time [x] = internal_deco_time [x]; |
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868 } |
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869 } |
167 | 870 } |
116 | 871 |
167 | 872 ////////////////////////////////////////////////////////////////////////////// |
116 | 873 // temp_tissue_safety // |
167 | 874 // |
116 | 875 // outsourced in v.102 |
167 | 876 // |
877 // Apply safety factors for brand ZH-L16 model. | |
878 // | |
879 static void temp_tissue_safety(void) | |
116 | 880 { |
197 | 881 assert( 0.0 < float_desaturation_multiplier && float_desaturation_multiplier <= 1.0 ); |
882 assert( 1.0 <= float_saturation_multiplier && float_saturation_multiplier <= 2.0 ); | |
883 | |
167 | 884 if( char_I_deco_model == 0 ) |
116 | 885 { |
886 if (temp_tissue < 0.0) | |
126 | 887 temp_tissue *= float_desaturation_multiplier; |
116 | 888 else |
126 | 889 temp_tissue *= float_saturation_multiplier; |
116 | 890 } |
167 | 891 } |
116 | 892 |
167 | 893 ////////////////////////////////////////////////////////////////////////////// |
894 ////////////////////////////////////////////////////////////////////////////// | |
116 | 895 // ** THE JUMP-IN CODE ** |
896 // ** for the asm code ** | |
167 | 897 ////////////////////////////////////////////////////////////////////////////// |
898 ////////////////////////////////////////////////////////////////////////////// | |
122
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899 |
167 | 900 ////////////////////////////////////////////////////////////////////////////// |
169
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901 // Called every 2 seconds during diving. |
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902 // update tissues every time. |
184 | 903 // |
169
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904 // Every 6 seconds (or slower when TTS > 16): |
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905 // - update deco table (char_O_deco_time/depth) with new values. |
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906 // - update ascent time, |
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907 // - set status to zero (so we can check there is new results). |
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908 // |
116 | 909 void deco_calc_hauptroutine(void) |
910 { | |
122
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911 RESET_C_STACK |
116 | 912 calc_hauptroutine(); |
913 int_O_desaturation_time = 65535; | |
914 } | |
915 | |
167 | 916 ////////////////////////////////////////////////////////////////////////////// |
184 | 917 // Reset decompression model: |
918 // + Set all tissues to equilibrium with Air at ambient pressure. | |
919 // + Reset last stop to 0m | |
920 // + Reset all model output. | |
116 | 921 void deco_clear_tissue(void) |
922 { | |
122
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923 RESET_C_STACK |
116 | 924 clear_tissue(); |
925 } | |
926 | |
167 | 927 ////////////////////////////////////////////////////////////////////////////// |
278 | 928 // Called every 1 min during decoplanning. |
929 // Update tissues for 1 min. | |
930 // | |
931 void deco_calc_tissue(void) | |
932 { | |
933 RESET_C_STACK | |
934 calc_hauptroutine_update_tissues(); | |
935 } | |
936 | |
937 ////////////////////////////////////////////////////////////////////////////// | |
167 | 938 |
116 | 939 void deco_calc_wo_deco_step_1_min(void) |
940 { | |
122
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941 RESET_C_STACK |
116 | 942 calc_wo_deco_step_1_min(); |
943 deco_calc_desaturation_time(); | |
944 } | |
945 | |
167 | 946 ////////////////////////////////////////////////////////////////////////////// |
947 | |
116 | 948 void deco_debug(void) |
949 { | |
122
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950 RESET_C_STACK |
116 | 951 } |
952 | |
241 | 953 |
954 ////////////////////////////////////////////////////////////////////////////// | |
955 // Find current gas in the list (if any). | |
956 // | |
957 // Input: char_I_deco_N2_ratio[] and He, to detect breathed gas. | |
958 // | |
959 // Output: sim_gas_depth_used | |
960 // | |
961 static void gas_switch_find_current(void) | |
962 { | |
247
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963 overlay unsigned char j; |
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964 overlay unsigned char N2 = (unsigned char)(N2_ratio * 100 + 0.5); |
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965 overlay unsigned char He = (unsigned char)(He_ratio * 100 + 0.5); |
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966 |
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967 for(j=0; j<5; ++j) |
241 | 968 { |
247
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969 // Make sure to detect if we are already breathing some gas in |
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970 // the current list (happends when first gas do have a depth). |
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971 if( N2 == char_I_deco_N2_ratio[j] |
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972 && He == char_I_deco_He_ratio[j] |
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973 ) |
290
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974 { |
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975 if( char_I_deco_gas_change[j] ) |
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976 temp_depth_limit = sim_gas_last_depth = char_I_deco_gas_change[j]; |
247
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977 sim_gas_last_used = j+1; |
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978 break; |
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979 } |
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980 } |
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981 |
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982 // If there is no gas-switch-delay running ? |
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983 if( sim_gas_delay <= sim_dive_mins) |
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984 { |
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985 // Compute current depth: |
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986 overlay unsigned char depth = (unsigned char)((pres_respiration - pres_surface) / 0.09985); |
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987 assert( depth < 130 ); |
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988 |
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989 // And if I'm above the last decostop (with the 3m margin) ? |
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990 if( (sim_gas_last_depth-3) > depth ) |
241 | 991 { |
247
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992 for(j=0; j<5; ++j) |
241 | 993 { |
247
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994 // And If I am in the range of a valide stop ? |
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995 // (again, with the same 3m margin) |
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996 if( char_I_deco_gas_change[j] |
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997 && depth <= char_I_deco_gas_change[j] |
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998 && depth >= (char_I_deco_gas_change[j] - 3) |
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999 ) |
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1000 { |
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1001 // Then start gas-switch timer there, |
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1002 sim_gas_delay = sim_dive_mins |
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1003 + read_custom_function(55); |
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1004 |
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1005 // And make sure decostop will be recorded at the right depth. |
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1006 temp_depth_limit = char_I_deco_gas_change[j]; |
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1007 break; |
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1008 } |
241 | 1009 } |
1010 } | |
247
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1011 else |
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1012 // Make clear there is no deay anymore. |
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1013 sim_gas_delay = 0; |
241 | 1014 } |
1015 } | |
1016 | |
167 | 1017 ////////////////////////////////////////////////////////////////////////////// |
217 | 1018 // Find deepest available gas. |
201 | 1019 // |
241 | 1020 // Input: temp_depth_limit, |
1021 // deco_gas_change[] | |
1022 // sim_gas_delay, sim_gas_depth_used, sim_dive_mins. | |
212 | 1023 // |
241 | 1024 // RETURNS TRUE if a stop is needed for gas switch. |
1025 // | |
1026 // Output: temp_depth_limit, sim_gas_delay, sim_gas_depth_used IFF the is a switch. | |
212 | 1027 // |
241 | 1028 // NOTE: might be called from bottom (when sim_gas_delay and sim_gas_depth_used |
1029 // are null), or during the ascent to make sure we are not passing a | |
1030 // stop (in which case both can be already set). | |
1031 // | |
1032 static unsigned char gas_switch_deepest(void) | |
201 | 1033 { |
241 | 1034 overlay unsigned char switch_deco = 0, switch_last = 0; |
201 | 1035 |
1036 if (char_I_const_ppO2 == 0) | |
1037 { | |
225 | 1038 overlay unsigned char j; |
1039 | |
241 | 1040 // Loop over all enabled gas, to find the deepest one, |
1041 // above las gas, but below temp_depth_limit. | |
1042 for(j=0; j<5; ++j) | |
225 | 1043 { |
241 | 1044 // Gas not (yet) allowed ? Skip ! |
1045 if( temp_depth_limit > deco_gas_change[j] ) | |
1046 continue; | |
1047 | |
1048 // Gas deeper than the current/previous one ? Skip ! | |
1049 if( sim_gas_last_depth && deco_gas_change[j] >= sim_gas_last_depth ) | |
1050 continue; | |
1051 | |
1052 // First, or deeper ? | |
247
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1053 if( switch_deco < deco_gas_change[j] ) |
241 | 1054 { |
1055 switch_deco = deco_gas_change[j]; | |
1056 switch_last = j+1; | |
1057 } | |
225 | 1058 } |
201 | 1059 } |
1060 | |
203 | 1061 // If there is a better gas available |
241 | 1062 if( switch_deco ) |
201 | 1063 { |
241 | 1064 assert( !sim_gas_last_depth || sim_gas_last_depth > switch_deco ); |
201 | 1065 |
241 | 1066 // Should restart gas-switch delay only when gas do changes... |
1067 assert( sim_gas_delay <= sim_dive_mins ); | |
217 | 1068 |
241 | 1069 sim_gas_last_depth = switch_deco; |
1070 sim_gas_last_used = switch_last; | |
1071 sim_gas_delay = read_custom_function(55); | |
217 | 1072 |
241 | 1073 // Apply depth correction ONLY if CF#55 is not null: |
1074 if( sim_gas_delay > 0 ) | |
225 | 1075 { |
241 | 1076 sim_gas_delay += sim_dive_mins; |
1077 temp_depth_limit = switch_deco; | |
1078 return 1; | |
225 | 1079 } |
241 | 1080 |
1081 return 0; | |
217 | 1082 } |
1083 | |
241 | 1084 sim_gas_delay = 0; |
1085 return 0; | |
217 | 1086 } |
1087 | |
1088 ////////////////////////////////////////////////////////////////////////////// | |
1089 // Calculate gas switches | |
1090 // | |
1091 // | |
1092 // Input: N2_ratio, He_ratio. | |
1093 // sim_gas_last_used | |
1094 // | |
1095 // Output: calc_N2_ratio, calc_He_ratio | |
1096 // | |
241 | 1097 static void gas_switch_set(void) |
217 | 1098 { |
224 | 1099 assert( 0 <= sim_gas_last_used && sim_gas_last_used <= 5 ); |
217 | 1100 |
224 | 1101 if( sim_gas_last_used == 0 ) |
1102 { | |
1103 calc_N2_ratio = N2_ratio; | |
1104 calc_He_ratio = He_ratio; | |
1105 } | |
1106 else | |
1107 { | |
1108 calc_N2_ratio = char_I_deco_N2_ratio[sim_gas_last_used-1] * 0.01; | |
1109 calc_He_ratio = char_I_deco_He_ratio[sim_gas_last_used-1] * 0.01; | |
217 | 1110 } |
201 | 1111 |
1112 assert( 0.0 <= calc_N2_ratio && calc_N2_ratio <= 0.95 ); | |
1113 assert( 0.0 <= calc_He_ratio && calc_He_ratio <= 0.95 ); | |
1114 assert( (calc_N2_ratio + calc_He_ratio) <= 1.00 ); | |
1115 } | |
1116 | |
1117 ////////////////////////////////////////////////////////////////////////////// | |
1118 // | |
212 | 1119 // Input: calc_N2_ratio, calc_He_ratio : simulated gas mix. |
1120 // temp_deco : simulated respiration pressure + security offset (deco_distance) | |
276 | 1121 // float_deco_distance : security factor. |
212 | 1122 // Water-vapor pressure inside lumbs (ppWVapour). |
1123 // | |
236 | 1124 // Output: ppN2, ppHe. |
212 | 1125 // |
1126 static void sim_alveolar_presures(void) | |
201 | 1127 { |
212 | 1128 overlay float deco_diluent = temp_deco; // new in v.101 |
1129 | |
276 | 1130 // Take deco offset into account, but not at surface. |
1131 // Note: this should be done on ambiant pressure, hence before | |
1132 // computing the diluant partial pressure... | |
1133 if( deco_diluent > pres_surface ) | |
1134 deco_diluent += float_deco_distance; | |
1135 | |
212 | 1136 //---- CCR mode : deco gas switch ? -------------------------------------- |
276 | 1137 if( char_I_const_ppO2 != 0 ) |
201 | 1138 { |
276 | 1139 // In CCR mode, use calc_XX_ratio instead of XX_ratio. |
1140 // Note: PPO2 and ratios are known outside the lumbs, so there is no | |
1141 // ppWVapour in the equations below: | |
212 | 1142 if( temp_deco > deco_ppO2_change ) |
276 | 1143 deco_diluent -= const_ppO2; |
201 | 1144 else |
276 | 1145 deco_diluent -= deco_ppO2; |
1146 deco_diluent /= calc_N2_ratio + calc_He_ratio; | |
212 | 1147 |
1148 if (deco_diluent > temp_deco) | |
1149 deco_diluent = temp_deco; | |
201 | 1150 } |
1151 | |
212 | 1152 if( deco_diluent > ppWVapour ) |
201 | 1153 { |
236 | 1154 ppN2 = calc_N2_ratio * (deco_diluent - ppWVapour); |
201 | 1155 ppHe = calc_He_ratio * (deco_diluent - ppWVapour); |
1156 } | |
1157 else | |
1158 { | |
236 | 1159 ppN2 = 0.0; |
201 | 1160 ppHe = 0.0; |
1161 } | |
236 | 1162 assert( 0.0 <= ppN2 && ppN2 < 14.0 ); |
201 | 1163 assert( 0.0 <= ppHe && ppHe < 14.0 ); |
1164 } | |
1165 | |
1166 ////////////////////////////////////////////////////////////////////////////// | |
167 | 1167 // clear_tissue |
1168 // | |
165 | 1169 // optimized in v.101 (var_N2_a) |
167 | 1170 // |
1171 // preload tissues with standard pressure for the given ambient pressure. | |
1172 // Note: fixed N2_ratio for standard air. | |
201 | 1173 // |
167 | 1174 static void clear_tissue(void) |
116 | 1175 { |
1176 flag_in_divemode = 0; | |
1177 int_O_DBS_bitfield = 0; | |
1178 int_O_DBS2_bitfield = 0; | |
1179 int_O_DBG_pre_bitfield = 0; | |
1180 int_O_DBG_post_bitfield = 0; | |
1181 char_O_NDL_at_20mtr = 255; | |
1182 | |
167 | 1183 // Kludge: the 0.0002 of 0.7902 are missing with standard air. |
1184 N2_ratio = 0.7902; | |
212 | 1185 pres_respiration = int_I_pres_respiration * 0.001; |
164 | 1186 |
167 | 1187 for(ci=0; ci<16; ci++) |
126 | 1188 { |
197 | 1189 // cycle through the 16 Bühlmann tissues |
200 | 1190 overlay float p = N2_ratio * (pres_respiration - ppWVapour); |
164 | 1191 pres_tissue[ci] = p; |
197 | 1192 |
1193 // cycle through the 16 Bühlmann tissues for Helium | |
167 | 1194 (pres_tissue+16)[ci] = 0.0; |
126 | 1195 } // for 0 to 16 |
116 | 1196 |
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1197 clear_deco_table(); |
126 | 1198 char_O_deco_status = 0; |
1199 char_O_nullzeit = 0; | |
168 | 1200 int_O_ascenttime = 0; |
126 | 1201 char_O_gradient_factor = 0; |
1202 char_O_relative_gradient_GF = 0; | |
197 | 1203 char_I_depth_last_deco = 0; // for compatibility with v.101pre_no_last_deco |
258 | 1204 |
1205 calc_lead_tissue_limit = 0.0; | |
1206 char_O_gtissue_no = 0; | |
167 | 1207 } |
116 | 1208 |
167 | 1209 ////////////////////////////////////////////////////////////////////////////// |
1210 // calc_hauptroutine | |
1211 // | |
1212 // this is the major code in dive mode calculates: | |
116 | 1213 // the tissues, |
167 | 1214 // the bottom time, |
1215 // and simulates the ascend with all deco stops. | |
171 | 1216 // |
1217 // The deco_state sequence is : | |
1218 // 3 (at surface) | |
1219 // +---> 0 : calc nullzeit | |
1220 // | 2 : simulate ascent to first stop (at 10m/min, less that 16x 1min simu) | |
1221 // | +-> 1 : simulate up to 16min of stops. | |
1222 // | +------< not finished | |
1223 // +--------< finish | |
1224 // | |
167 | 1225 static void calc_hauptroutine(void) |
116 | 1226 { |
241 | 1227 static unsigned char backup_gas_used = 0; |
1228 static unsigned char backup_gas_depth = 0; | |
217 | 1229 static unsigned char backup_gas_delay = 0; |
186 | 1230 |
116 | 1231 calc_hauptroutine_data_input(); |
1232 | |
1233 if(!flag_in_divemode) | |
1234 { | |
1235 flag_in_divemode = 1; | |
1236 create_dbs_set_dbg_and_ndl20mtr(); | |
1237 } | |
1238 else | |
1239 check_pre_dbg(); | |
1240 | |
1241 calc_hauptroutine_update_tissues(); | |
1242 calc_gradient_factor(); | |
1243 | |
167 | 1244 // toggle between calculation for nullzeit (bottom time), |
1245 // deco stops | |
1246 // and more deco stops (continue) | |
1247 switch( char_O_deco_status ) | |
116 | 1248 { |
186 | 1249 case 3: //---- At surface: start a new dive ------------------------------ |
1250 clear_deco_table(); | |
1251 copy_deco_table(); | |
200 | 1252 int_O_ascenttime = 0; // Reset DTR. |
1253 char_O_nullzeit = 0; // Reset bottom time. | |
278 | 1254 char_O_deco_status = 0; // Calc bottom-time/nullzeit next iteration. |
201 | 1255 |
217 | 1256 // Values that should be reset just once for the full real dive. |
1257 // This is used to record the lowest stop for the whole dive, | |
1258 // Including ACCROSS all simulated ascent. | |
1259 low_depth = 0; | |
1260 | |
1261 // Reset gas switch history. | |
241 | 1262 backup_gas_used = sim_gas_last_used = 0; |
1263 backup_gas_depth = sim_gas_last_depth = 0; | |
217 | 1264 backup_gas_delay = sim_gas_delay = 0; |
203 | 1265 sim_dive_mins = 0; |
1266 break; | |
186 | 1267 |
167 | 1268 case 0: //---- bottom time ----------------------------------------------- |
1269 calc_nullzeit(); | |
1270 check_ndl(); | |
186 | 1271 char_O_deco_status = 2; // calc ascent next time. |
1272 break; | |
1273 | |
1274 case 2: //---- Simulate ascent to first stop ----------------------------- | |
203 | 1275 // Check proposed gas at begin of ascent simulation |
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1276 sim_dive_mins = int_I_divemins; // Init current time. |
241 | 1277 |
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1278 gas_switch_find_current(); // Lookup for current gas & time. |
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1279 gas_switch_set(); // setup calc_ratio's |
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1280 |
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1281 backup_gas_used = sim_gas_last_used; // And save for later simu steps. |
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1282 backup_gas_depth = sim_gas_last_depth; // And save for later simu steps. |
203 | 1283 backup_gas_delay = sim_gas_delay; |
186 | 1284 |
1285 sim_ascent_to_first_stop(); | |
201 | 1286 |
1287 char_O_deco_status = 1; // Calc stops next time (deco or gas switch). | |
167 | 1288 break; |
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1289 |
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1290 case 1: //---- Simulate stops -------------------------------------------- |
167 | 1291 calc_hauptroutine_calc_deco(); |
186 | 1292 |
1293 // If simulation is finished, restore the GF low reference, so that | |
1294 // next ascent simulation is done from the current depth: | |
217 | 1295 if( char_O_deco_status == 0 ) |
186 | 1296 { |
241 | 1297 sim_gas_last_used = backup_gas_used; |
1298 sim_gas_last_depth = backup_gas_depth; | |
247
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1299 sim_gas_delay = backup_gas_delay; |
186 | 1300 } |
167 | 1301 break; |
116 | 1302 } |
167 | 1303 |
116 | 1304 check_post_dbg(); |
1305 } | |
1306 | |
167 | 1307 ////////////////////////////////////////////////////////////////////////////// |
1308 // calc_hauptroutine_data_input | |
1309 // | |
1310 // Reset all C-code dive parameters from their ASM-code values. | |
1311 // Detect gas change condition. | |
1312 // | |
116 | 1313 void calc_hauptroutine_data_input(void) |
1314 { | |
203 | 1315 overlay short int_temp; |
126 | 1316 |
197 | 1317 pres_respiration = int_I_pres_respiration * 0.001; |
1318 pres_surface = int_I_pres_surface * 0.001; | |
1319 N2_ratio = char_I_N2_ratio * 0.01; | |
1320 He_ratio = char_I_He_ratio * 0.01; | |
1321 float_deco_distance = char_I_deco_distance * 0.01; // Get offset is in mbar. | |
116 | 1322 |
126 | 1323 // ____________________________________________________ |
1324 // | |
1325 // _____________ G A S _ C H A N G E S ________________ | |
1326 // ____________________________________________________ | |
1327 | |
212 | 1328 // Keep a margin of 150mbar = 1.50m |
1329 int_temp = (int_I_pres_respiration - int_I_pres_surface) | |
1330 + MBAR_REACH_GASCHANGE_AUTO_CHANGE_OFF; | |
126 | 1331 |
225 | 1332 deco_gas_change[0] = 0; |
1333 deco_gas_change[1] = 0; | |
1334 deco_gas_change[2] = 0; | |
1335 deco_gas_change[3] = 0; | |
1336 deco_gas_change[4] = 0; | |
116 | 1337 |
203 | 1338 // Gas are selectable if we did not pass the change depth by more than 1.50m: |
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1339 if(char_I_deco_gas_change[0]) |
126 | 1340 { |
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1341 if( int_temp > 100 *(short)char_I_deco_gas_change[0] ) |
225 | 1342 deco_gas_change[0] = char_I_deco_gas_change[0]; |
126 | 1343 } |
222
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1344 if(char_I_deco_gas_change[1]) |
126 | 1345 { |
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1346 if( int_temp > 100 *(short)char_I_deco_gas_change[1] ) |
225 | 1347 deco_gas_change[1] = char_I_deco_gas_change[1]; |
126 | 1348 } |
222
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1349 if(char_I_deco_gas_change[2]) |
126 | 1350 { |
222
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1351 if( int_temp > 100 *(short)char_I_deco_gas_change[2] ) |
225 | 1352 deco_gas_change[2] = char_I_deco_gas_change[2]; |
126 | 1353 } |
222
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1354 if(char_I_deco_gas_change[3]) |
126 | 1355 { |
222
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1356 if( int_temp > 100 *(short)char_I_deco_gas_change[3] ) |
225 | 1357 deco_gas_change[3] = char_I_deco_gas_change[3]; |
126 | 1358 } |
222
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1359 if(char_I_deco_gas_change[4]) |
126 | 1360 { |
222
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1361 if( int_temp > 100 *(short)char_I_deco_gas_change[4] ) |
225 | 1362 deco_gas_change[4] = char_I_deco_gas_change[4]; |
126 | 1363 } |
116 | 1364 |
197 | 1365 const_ppO2 = char_I_const_ppO2 * 0.01; |
1366 deco_ppO2_change = char_I_deco_ppO2_change / 99.95 | |
1367 + pres_surface | |
1368 + float_deco_distance; | |
1369 deco_ppO2 = char_I_deco_ppO2 * 0.01; | |
1370 float_desaturation_multiplier = char_I_desaturation_multiplier * 0.01; | |
1371 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; | |
1372 GF_low = char_I_GF_Low_percentage * 0.01; | |
1373 GF_high = char_I_GF_High_percentage * 0.01; | |
126 | 1374 GF_delta = GF_high - GF_low; |
116 | 1375 } |
1376 | |
167 | 1377 ////////////////////////////////////////////////////////////////////////////// |
171 | 1378 // |
1379 // | |
116 | 1380 void calc_hauptroutine_update_tissues(void) |
1381 { | |
197 | 1382 assert( 0.00 <= N2_ratio && N2_ratio <= 1.00 ); |
1383 assert( 0.00 <= He_ratio && He_ratio <= 1.00 ); | |
1384 assert( (N2_ratio + He_ratio) <= 0.95 ); | |
237 | 1385 assert( 0.800 < pres_respiration && pres_respiration < 14.0 ); |
197 | 1386 |
276 | 1387 pres_diluent = pres_respiration; |
1388 if (char_I_const_ppO2 != 0) // new in v.101 | |
186 | 1389 { |
276 | 1390 pres_diluent -= const_ppO2; // new in v.101 |
1391 pres_diluent /= N2_ratio + He_ratio; // new in v.101 | |
1392 if( pres_diluent > pres_respiration ) // new in v.101 | |
1393 pres_diluent = pres_respiration; // new in v.101 | |
186 | 1394 } |
276 | 1395 if (pres_diluent > ppWVapour) // new in v.101 |
116 | 1396 { |
276 | 1397 ppN2 = N2_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
200 | 1398 ppHe = He_ratio * (pres_diluent - ppWVapour); // changed in v.101 |
116 | 1399 char_O_diluent = (char)(pres_diluent/pres_respiration*100.0); |
1400 } | |
167 | 1401 else // new in v.101 |
116 | 1402 { |
236 | 1403 ppN2 = 0.0; // new in v.101 |
200 | 1404 ppHe = 0.0; // new in v.101 |
116 | 1405 char_O_diluent = 0; |
1406 } | |
1407 | |
1408 if(!char_I_step_is_1min) | |
192 | 1409 calc_tissue(0); |
116 | 1410 else |
192 | 1411 calc_tissue(1); |
186 | 1412 |
192 | 1413 // Calc limit for surface, ie. GF_high. |
258 | 1414 calc_limit(); |
186 | 1415 |
203 | 1416 int_O_gtissue_limit = (short)(calc_lead_tissue_limit * 1000); |
1417 int_O_gtissue_press = (short)((pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]) * 1000); | |
192 | 1418 |
1419 // if guiding tissue can not be exposed to surface pressure immediately | |
1420 if( calc_lead_tissue_limit > pres_surface && char_O_deco_status == 0) | |
116 | 1421 { |
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1422 char_O_nullzeit = 0; // deco necessary |
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1423 char_O_deco_status = 2; // calculate ascent on next iteration. |
116 | 1424 } |
171 | 1425 } |
1426 | |
116 | 1427 |
167 | 1428 ////////////////////////////////////////////////////////////////////////////// |
169
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1429 // Compute stops. |
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1430 // |
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1431 // Note: because this can be very long, break on 16 iterations, and set state |
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1432 // to 0 when finished, or to 1 when needing to continue. |
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1433 // Note: because this might be very long (~ 66 ms by iteration in 1.84beta), |
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1434 // break the loop when total time > 512msec. |
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1435 // |
116 | 1436 void calc_hauptroutine_calc_deco(void) |
1437 { | |
169
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1438 overlay unsigned char loop; |
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1439 |
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1440 for(loop = 0; loop < 16; ++loop) |
116 | 1441 { |
257
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1442 // Limit loops to 512ms, using the RTC timer 3: |
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1443 if( tmr3() & (512*32) ) |
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1444 break; |
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1445 |
241 | 1446 // Do not ascent while doing a gas switch ? |
203 | 1447 if( sim_gas_delay <= sim_dive_mins ) |
1448 { | |
241 | 1449 if( calc_nextdecodepth() ) |
1450 { | |
1451 if( temp_depth_limit == 0 ) | |
1452 goto Surface; | |
116 | 1453 |
241 | 1454 //---- We hit a stop at temp_depth_limit --------------------- |
1455 temp_deco = temp_depth_limit * 0.09985 // Convert to relative bar, | |
1456 + pres_surface; // To absolute. | |
1457 update_deco_table(); // Adds a one minute stops. | |
1458 } | |
1459 else | |
1460 { | |
1461 //---- No stop ----------------------------------------------- | |
1462 temp_deco -= 0.9985; // Ascend 10m, no wait. | |
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1463 |
241 | 1464 //---- Finish computations once surface is reached ----------- |
1465 if( temp_deco <= pres_surface ) | |
1466 { | |
1467 Surface: | |
1468 copy_deco_table(); | |
1469 calc_ascenttime(); | |
1470 char_O_deco_status = 0; // calc nullzeit next time. | |
278 | 1471 char_O_deco_last_stop = 0; // Surface reached. |
241 | 1472 return; |
1473 } | |
1474 } | |
212 | 1475 } |
1476 else | |
241 | 1477 update_deco_table(); // Just pass one minute. |
197 | 1478 |
241 | 1479 //---- Then update tissue -------------------------------------------- |
203 | 1480 sim_dive_mins++; // Advance simulated time by 1 minute. |
241 | 1481 gas_switch_set(); // Apply any simulated gas change, once validated. |
212 | 1482 sim_alveolar_presures(); // Updates ppN2 and ppHe. |
192 | 1483 sim_tissue(1); // Simulate compartiments for 1 minute. |
116 | 1484 } |
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1485 |
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1486 // Surface not reached, need more stops... |
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1487 char_O_deco_status = 1; // calc more stops next time. |
278 | 1488 char_O_deco_last_stop = temp_depth_limit; // Reached depth. |
116 | 1489 } |
1490 | |
167 | 1491 ////////////////////////////////////////////////////////////////////////////// |
169
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1492 // Simulation ascention to first deco stop. |
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1493 // |
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1494 // Note: because we ascent with a constant speed (10m/mn, ie. 1bar/mn), |
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1495 // there is no need to break on more that 16 iterations |
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1496 // (or we are already in deep shit). |
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1497 // |
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1498 void sim_ascent_to_first_stop(void) |
116 | 1499 { |
171 | 1500 update_startvalues(); |
169
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1501 clear_deco_table(); |
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1502 |
200 | 1503 temp_deco = pres_respiration; // Starts from current real depth. |
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1504 |
212 | 1505 // Do we have a gas switch going on ? |
1506 if( sim_gas_delay > sim_dive_mins ) | |
1507 return; | |
1508 | |
241 | 1509 //---- Loop until first stop, gas switch, or surface is reached ---------- |
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1510 for(;;) |
116 | 1511 { |
241 | 1512 // Try ascending 1 full minute. |
1513 temp_deco -= 0.9985; // 1 min, at 10m/min. ~ 1bar. | |
203 | 1514 |
212 | 1515 // Compute sim_lead_tissue_limit at GF_low (deepest stop). |
1516 sim_limit(GF_low); | |
1517 | |
1518 // Did we reach deepest remaining stop ? | |
241 | 1519 if( temp_deco < sim_lead_tissue_limit ) |
212 | 1520 { |
241 | 1521 temp_deco += 0.9985; // Restore last correct depth, |
1522 break; // End fast ascent. | |
212 | 1523 } |
1524 | |
203 | 1525 // Did we reach surface ? |
1526 if( temp_deco <= pres_surface ) | |
1527 { | |
1528 temp_deco = pres_surface; // Yes: finished ! | |
1529 break; | |
1530 } | |
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1531 |
241 | 1532 // Check for gas change below new depth ? |
1533 temp_depth_limit = (temp_deco - pres_surface) / 0.09985; | |
1534 | |
1535 if( gas_switch_deepest() ) | |
1536 { | |
1537 temp_deco = temp_depth_limit * 0.09985 + pres_surface; | |
212 | 1538 break; |
241 | 1539 } |
171 | 1540 |
203 | 1541 sim_dive_mins++; // Advance simulated time by 1 minute. |
241 | 1542 sim_alveolar_presures(); // temp_deco --> ppN2/ppHe |
203 | 1543 sim_tissue(1); // and update tissues for 1 min. |
1544 } | |
167 | 1545 } |
116 | 1546 |
167 | 1547 ////////////////////////////////////////////////////////////////////////////// |
1548 // calc_tissue | |
1549 // | |
116 | 1550 // optimized in v.101 |
167 | 1551 // |
184 | 1552 static void calc_tissue(PARAMETER unsigned char period) |
116 | 1553 { |
251 | 1554 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
1555 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
236 | 1556 |
126 | 1557 for (ci=0;ci<16;ci++) |
1558 { | |
258 | 1559 read_buhlmann_times(period); // 2 sec or 1 min period. |
116 | 1560 |
126 | 1561 // N2 |
236 | 1562 temp_tissue = (ppN2 - pres_tissue[ci]) * var_N2_e; |
126 | 1563 temp_tissue_safety(); |
167 | 1564 pres_tissue[ci] += temp_tissue; |
165 | 1565 |
126 | 1566 // He |
200 | 1567 temp_tissue = (ppHe - (pres_tissue+16)[ci]) * var_He_e; |
126 | 1568 temp_tissue_safety(); |
167 | 1569 (pres_tissue+16)[ci] += temp_tissue; |
192 | 1570 } |
167 | 1571 } |
116 | 1572 |
167 | 1573 ////////////////////////////////////////////////////////////////////////////// |
192 | 1574 // calc_limit |
167 | 1575 // |
192 | 1576 // New in v.111 : separated from calc_tissue(), and depends on GF value. |
167 | 1577 // |
258 | 1578 static void calc_limit(void) |
167 | 1579 { |
192 | 1580 char_O_gtissue_no = 255; |
1581 calc_lead_tissue_limit = 0.0; | |
1582 | |
1583 for (ci=0;ci<16;ci++) | |
1584 { | |
1585 overlay float p = pres_tissue[ci] + (pres_tissue+16)[ci]; | |
1586 | |
258 | 1587 read_buhlmann_coefficients(); |
192 | 1588 var_N2_a = (var_N2_a * pres_tissue[ci] + var_He_a * (pres_tissue+16)[ci]) / p; |
1589 var_N2_b = (var_N2_b * pres_tissue[ci] + var_He_b * (pres_tissue+16)[ci]) / p; | |
116 | 1590 |
192 | 1591 // Apply the Eric Baker's varying gradient factor correction. |
1592 // Note: the correction factor depends both on GF and b, | |
1593 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1594 // so that can change who is the leading gas... | |
1595 // Note: Also depends of the GF. So the calcul is different for | |
1596 // GF_low, current GF, or GF_high... | |
1597 // *BUT* calc_tissue() is used to compute bottom time, | |
1598 // hence what would happend at surface, | |
1599 // hence at GF_high. | |
1600 if( char_I_deco_model == 1 ) | |
258 | 1601 p = ( p - var_N2_a * GF_high) * var_N2_b |
1602 / (GF_high + var_N2_b * (1.0 - GF_high)); | |
192 | 1603 else |
1604 p = (p - var_N2_a) * var_N2_b; | |
258 | 1605 if( p < 0.0 ) p = 0.0; |
192 | 1606 |
1607 if( p > calc_lead_tissue_limit ) | |
1608 { | |
1609 char_O_gtissue_no = ci; | |
1610 calc_lead_tissue_limit = p; | |
1611 } | |
1612 } | |
197 | 1613 |
1614 assert( char_O_gtissue_no < 16 ); | |
1615 assert( 0.0 <= calc_lead_tissue_limit && calc_lead_tissue_limit <= 14.0); | |
167 | 1616 } |
1617 | |
1618 ////////////////////////////////////////////////////////////////////////////// | |
1619 // calc_nullzeit | |
1620 // | |
1621 // calculates the remaining bottom time | |
1622 // | |
1623 // unchanged in v.101 | |
1624 // | |
1625 static void calc_nullzeit(void) | |
1626 { | |
203 | 1627 overlay unsigned char loop; |
200 | 1628 update_startvalues(); |
167 | 1629 |
116 | 1630 char_O_nullzeit = 0; |
167 | 1631 for(loop = 1; loop <= 17; loop++) |
116 | 1632 { |
1633 backup_sim_pres_tissue(); | |
197 | 1634 sim_tissue(2); // 10 min. |
192 | 1635 sim_limit(GF_high); |
167 | 1636 |
192 | 1637 if( sim_lead_tissue_limit > pres_surface ) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately |
185 | 1638 { |
1639 restore_sim_pres_tissue(); | |
1640 break; | |
1641 } | |
1642 // Validate once we know its good. | |
1643 char_O_nullzeit += 10; | |
167 | 1644 } |
1645 | |
116 | 1646 if (char_O_nullzeit < 60) |
1647 { | |
167 | 1648 for(loop=1; loop <= 10; loop++) |
116 | 1649 { |
197 | 1650 sim_tissue(1); // 1 min |
192 | 1651 sim_limit(GF_high); |
1652 | |
1653 if( sim_lead_tissue_limit > pres_surface) // changed in v.102 , if guiding tissue can not be exposed to surface pressure immediately | |
185 | 1654 break; |
1655 char_O_nullzeit++; | |
167 | 1656 } |
185 | 1657 } |
1658 } | |
116 | 1659 |
167 | 1660 ////////////////////////////////////////////////////////////////////////////// |
1661 // backup_sim_pres_tissue | |
1662 // | |
116 | 1663 void backup_sim_pres_tissue(void) |
1664 { | |
167 | 1665 overlay unsigned char x; |
1666 | |
1667 for(x = 0; x<32; x++) | |
126 | 1668 sim_pres_tissue_backup[x] = sim_pres_tissue[x]; |
167 | 1669 } |
116 | 1670 |
167 | 1671 ////////////////////////////////////////////////////////////////////////////// |
1672 // restore_sim_pres_tissue | |
1673 // | |
116 | 1674 void restore_sim_pres_tissue(void) |
1675 { | |
167 | 1676 overlay unsigned char x; |
1677 | |
1678 for(x = 0; x<32; x++) | |
126 | 1679 sim_pres_tissue[x] = sim_pres_tissue_backup[x]; |
167 | 1680 } |
116 | 1681 |
167 | 1682 ////////////////////////////////////////////////////////////////////////////// |
1683 // calc_ascenttime | |
1684 // | |
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1685 static void calc_ascenttime(void) |
116 | 1686 { |
126 | 1687 if (pres_respiration > pres_surface) |
1688 { | |
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1689 overlay unsigned char x; |
168 | 1690 |
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1691 // + 0.7 to count 1 minute ascent time from 3 metre to surface |
192 | 1692 overlay float ascent = pres_respiration - pres_surface + 0.7; |
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1693 if (ascent < 0.0) |
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1694 ascent = 0.0; |
203 | 1695 int_O_ascenttime = (unsigned short)(ascent + 0.99); |
168 | 1696 |
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1697 for(x=0; x<32 && internal_deco_depth[x]; x++) |
203 | 1698 int_O_ascenttime += (unsigned short)internal_deco_time[x]; |
126 | 1699 } |
1700 else | |
168 | 1701 int_O_ascenttime = 0; |
167 | 1702 } |
116 | 1703 |
167 | 1704 ////////////////////////////////////////////////////////////////////////////// |
1705 // update_startvalues | |
1706 // | |
116 | 1707 // updated in v.102 |
167 | 1708 // |
116 | 1709 void update_startvalues(void) |
1710 { | |
167 | 1711 overlay unsigned char x; |
116 | 1712 |
201 | 1713 // Start ascent simulation with current tissue partial pressures. |
116 | 1714 for (x = 0;x<16;x++) |
1715 { | |
1716 sim_pres_tissue[x] = pres_tissue[x]; | |
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1717 (sim_pres_tissue+16)[x] = (pres_tissue+16)[x]; |
116 | 1718 } |
197 | 1719 |
201 | 1720 // No leading tissue (yet) for this ascent simulation. |
197 | 1721 sim_lead_tissue_limit = 0.0; |
1722 sim_lead_tissue_no = 255; | |
167 | 1723 } |
116 | 1724 |
167 | 1725 ////////////////////////////////////////////////////////////////////////////// |
192 | 1726 // sim_tissue |
167 | 1727 // |
116 | 1728 // optimized in v.101 |
167 | 1729 // |
1730 // Function very simular to calc_tissue, but: | |
1731 // + Use a 1min or 10min period. | |
1732 // + Do it on sim_pres_tissue, instead of pres_tissue. | |
184 | 1733 static void sim_tissue(PARAMETER unsigned char period) |
116 | 1734 { |
251 | 1735 assert( 0.00 <= ppN2 && ppN2 < 11.2 ); // 80% N2 at 130m |
1736 assert( 0.00 <= ppHe && ppHe < 12.6 ); // 90% He at 130m | |
236 | 1737 |
192 | 1738 for(ci=0; ci<16; ci++) |
126 | 1739 { |
258 | 1740 read_buhlmann_times(period); // 1 or 10 minute(s) interval |
165 | 1741 |
126 | 1742 // N2 |
236 | 1743 temp_tissue = (ppN2 - sim_pres_tissue[ci]) * var_N2_e; |
126 | 1744 temp_tissue_safety(); |
167 | 1745 sim_pres_tissue[ci] += temp_tissue; |
126 | 1746 |
1747 // He | |
200 | 1748 temp_tissue = (ppHe - (sim_pres_tissue+16)[ci]) * var_He_e; |
126 | 1749 temp_tissue_safety(); |
167 | 1750 (sim_pres_tissue+16)[ci] += temp_tissue; |
192 | 1751 } |
167 | 1752 } |
116 | 1753 |
167 | 1754 ////////////////////////////////////////////////////////////////////////////// |
192 | 1755 // sim_limit() |
1756 // | |
1757 // New in v.111 | |
1758 // | |
1759 // Function separated from sim_tissue() to allow recomputing limit on | |
1760 // different depth, because it depends on current gradient factor. | |
167 | 1761 // |
192 | 1762 static void sim_limit(PARAMETER float GF_current) |
116 | 1763 { |
212 | 1764 assert( 0.0 < GF_current && GF_current <= 1.0f); |
1765 | |
192 | 1766 sim_lead_tissue_limit = 0.0; |
212 | 1767 sim_lead_tissue_no = 0; // If no one is critic, keep first tissue. |
192 | 1768 |
1769 for(ci=0; ci<16; ci++) | |
1770 { | |
241 | 1771 overlay float N2 = sim_pres_tissue[ci]; |
1772 overlay float He = (sim_pres_tissue+16)[ci]; | |
1773 overlay float p = N2 + He; | |
192 | 1774 |
258 | 1775 read_buhlmann_coefficients(); |
241 | 1776 var_N2_a = (var_N2_a * N2 + var_He_a * He) / p; |
1777 var_N2_b = (var_N2_b * N2 + var_He_b * He) / p; | |
192 | 1778 |
1779 // Apply the Eric Baker's varying gradient factor correction. | |
1780 // Note: the correction factor depends both on GF and b, | |
1781 // Actual values are in the 1.5 .. 1.0 range (for a GF=30%), | |
1782 // so that can change who is the leading gas... | |
1783 // Note: Also depends of the GF_current... | |
1784 if( char_I_deco_model == 1 ) | |
1785 p = ( p - var_N2_a * GF_current) * var_N2_b | |
1786 / (GF_current + var_N2_b * (1.0 - GF_current)); | |
1787 else | |
1788 p = (p - var_N2_a) * var_N2_b; | |
237 | 1789 if( p < 0.0 ) p = 0.0; |
192 | 1790 |
1791 if( p > sim_lead_tissue_limit ) | |
1792 { | |
1793 sim_lead_tissue_no = ci; | |
1794 sim_lead_tissue_limit = p; | |
1795 } | |
1796 } // for ci | |
197 | 1797 |
1798 assert( sim_lead_tissue_no < 16 ); | |
237 | 1799 assert( 0.0 <= sim_lead_tissue_limit && sim_lead_tissue_limit <= 14.0 ); |
167 | 1800 } |
116 | 1801 |
167 | 1802 ////////////////////////////////////////////////////////////////////////////// |
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1803 // clear_deco_table |
167 | 1804 // |
1805 // unchanged in v.101 | |
1806 // | |
169
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1807 static void clear_deco_table(void) |
116 | 1808 { |
169
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1809 overlay unsigned char x; |
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1810 |
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1811 for(x=0; x<32; ++x) |
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1812 { |
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1813 internal_deco_time [x] = 0; |
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1814 internal_deco_depth[x] = 0; |
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1815 } |
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1816 } |
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1817 |
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1818 ////////////////////////////////////////////////////////////////////////////// |
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1819 // update_deco_table |
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1820 // |
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1821 // Add 1 min to current stop. |
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1822 // |
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1823 // Inputs: |
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1824 // temp_depth_limit = stop's depth, in meters. |
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1825 // In/Out: |
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1826 // internal_deco_depth[] : depth (in metres) of each stops. |
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1827 // internal_deco_time [] : time (in minutes) of each stops. |
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1828 // |
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1829 static void update_deco_table() |
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1830 { |
192 | 1831 overlay unsigned char x; |
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1832 assert( temp_depth_limit < 128 ); // Can't be negativ (overflown). |
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1833 assert( temp_depth_limit > 0 ); // No stop at surface... |
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1834 |
192 | 1835 for(x=0; x<32; ++x) |
1836 { | |
212 | 1837 // Make sure deco-stops are recorded in order: |
1838 assert( !internal_deco_depth[x] || temp_depth_limit <= internal_deco_depth[x] ); | |
1839 | |
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1840 if( (internal_deco_depth[x] & 0x7F) == temp_depth_limit ) |
192 | 1841 { |
1842 // Do not overflow (max 255') | |
1843 if( internal_deco_time[x] < 255 ) | |
1844 { | |
1845 internal_deco_time[x]++; | |
1846 return; | |
1847 } | |
1848 // But store extra in the next stop... | |
169
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1849 } |
192 | 1850 |
169
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1851 if( internal_deco_depth[x] == 0 ) |
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1852 { |
192 | 1853 internal_deco_depth[x] = temp_depth_limit; |
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1854 if( sim_gas_delay > sim_dive_mins ) |
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1855 internal_deco_depth[x] |= 0x80; |
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1856 |
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1857 internal_deco_time[x] = 1; |
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1858 return; |
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1859 } |
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1860 } |
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1861 |
192 | 1862 // Can't store stops at more than 96m. |
1863 // Or stops at less that 3m too. | |
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1864 // Just do nothing with that... |
167 | 1865 } |
116 | 1866 |
167 | 1867 ////////////////////////////////////////////////////////////////////////////// |
1868 // calc_gradient_factor | |
1869 // | |
165 | 1870 // optimized in v.101 (var_N2_a) |
116 | 1871 // new code in v.102 |
167 | 1872 // |
1873 static void calc_gradient_factor(void) | |
116 | 1874 { |
197 | 1875 overlay float gf; |
237 | 1876 |
197 | 1877 assert( char_O_gtissue_no < 16 ); |
237 | 1878 assert( 0.800 <= pres_respiration && pres_respiration < 14.0 ); |
197 | 1879 |
116 | 1880 // tissue > respiration (entsaettigungsvorgang) |
1881 // gradient ist wieviel prozent an limit mit basis tissue | |
1882 // dh. 0% = respiration == tissue | |
1883 // dh. 100% = respiration == limit | |
197 | 1884 temp_tissue = pres_tissue[char_O_gtissue_no] + (pres_tissue+16)[char_O_gtissue_no]; |
1885 if( temp_tissue < pres_respiration ) | |
1886 gf = 0.0; | |
1887 else | |
1888 { | |
1889 gf = (temp_tissue - pres_respiration) | |
258 | 1890 / (temp_tissue - calc_lead_tissue_limit) |
197 | 1891 * 100.0; |
1892 if( gf > 255.0 ) gf = 255.0; | |
1893 if( gf < 0.0 ) gf = 0.0; | |
1894 } | |
1895 char_O_gradient_factor = (unsigned char)gf; | |
116 | 1896 |
1897 if (char_I_deco_model == 1) // calculate relative gradient factor | |
1898 { | |
197 | 1899 overlay float rgf; |
1900 | |
1901 if( low_depth == 0 ) | |
1902 rgf = GF_high; | |
1903 else | |
1904 { | |
241 | 1905 overlay float temp1 = low_depth * 0.09985; |
197 | 1906 overlay float temp2 = pres_respiration - pres_surface; |
186 | 1907 |
197 | 1908 if (temp2 <= 0) |
1909 rgf = GF_high; | |
1910 else if (temp2 >= temp1) | |
1911 rgf = GF_low; | |
1912 else | |
1913 rgf = GF_low + (temp1 - temp2)/temp1*GF_delta; | |
1914 } | |
186 | 1915 |
197 | 1916 rgf = gf / rgf; // gf is already in percent |
1917 if( rgf < 0.0 ) rgf = 0.0; | |
1918 if( rgf > 255.0 ) rgf = 255.0; | |
1919 char_O_relative_gradient_GF = (unsigned char)rgf; | |
116 | 1920 } // calc relative gradient factor |
1921 else | |
1922 { | |
186 | 1923 char_O_relative_gradient_GF = char_O_gradient_factor; |
116 | 1924 } |
167 | 1925 } |
116 | 1926 |
167 | 1927 ////////////////////////////////////////////////////////////////////////////// |
1928 // deco_calc_desaturation_time | |
1929 // | |
116 | 1930 // FIXED N2_ratio |
1931 // unchanged in v.101 | |
233 | 1932 // Inputs: int_I_pres_surface, ppWVapour, char_I_desaturation_multiplier |
1933 // Outputs: int_O_desaturation_time, char_O_tissue_saturation[0..31] | |
167 | 1934 // |
116 | 1935 void deco_calc_desaturation_time(void) |
1936 { | |
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1937 RESET_C_STACK |
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1938 |
233 | 1939 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
1940 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
1941 | |
260
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1942 #ifndef CROSS_COMPILE |
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1943 // Note: we don't use far rom pointer, because the |
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1944 // 24 bits is to complex, hence we have to set |
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1945 // the UPPER page ourself... |
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1946 // --> Set zero if tables are moved to lower pages ! |
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1947 _asm |
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1948 movlw 1 |
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1949 movwf TBLPTRU,0 |
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1950 _endasm |
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1951 #endif |
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1952 |
237 | 1953 N2_ratio = 0.7902; // FIXED sum as stated in bühlmann |
233 | 1954 pres_surface = int_I_pres_surface * 0.001; |
236 | 1955 ppN2 = N2_ratio * (pres_surface - ppWVapour); |
126 | 1956 int_O_desaturation_time = 0; |
1957 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) | |
233 | 1958 |
126 | 1959 for (ci=0;ci<16;ci++) |
1960 { | |
251 | 1961 overlay unsigned short desat_time; // For a particular compartiment, in min. |
1962 overlay float temp1; | |
1963 overlay float temp2; | |
1964 overlay float temp3; | |
1965 overlay float temp4; | |
1966 | |
126 | 1967 // saturation_time (for flight) and N2_saturation in multiples of halftime |
1968 // version v.100: 1.1 = 10 percent distance to totally clean (totally clean is not possible, would take infinite time ) | |
1969 // 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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1970 // changes in v.101: 1.05 = 5 percent dist to totally clean is new desaturation point for display and NoFly calculations |
126 | 1971 // N2 |
260
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1972 temp1 = 1.05 * ppN2 - pres_tissue[ci]; |
236 | 1973 temp2 = ppN2 - pres_tissue[ci]; |
126 | 1974 if (temp2 >= 0.0) |
1975 { | |
233 | 1976 temp1 = 0.0; |
1977 temp2 = 0.0; | |
126 | 1978 } |
1979 else | |
1980 temp1 = temp1 / temp2; | |
251 | 1981 if( 0.0 < temp1 && temp1 < 1.0 ) |
126 | 1982 { |
260
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1983 overlay float var_N2_halftime = buhlmann_ht[ci]; |
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1984 assert( 4.0 <= var_N2_halftime && var_N2_halftime <= 635.0 ); |
252 | 1985 |
260
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1986 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
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1987 // minus because log is negative. |
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1988 temp1 = log(1.0 - temp1) / -0.6931; // temp1 is the multiples of half times necessary. |
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1989 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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1990 |
126 | 1991 } |
1992 else | |
1993 { | |
233 | 1994 temp1 = 0.0; |
1995 temp2 = 0.0; | |
126 | 1996 } |
116 | 1997 |
126 | 1998 // He |
167 | 1999 temp3 = 0.1 - (pres_tissue+16)[ci]; |
126 | 2000 if (temp3 >= 0.0) |
2001 { | |
233 | 2002 temp3 = 0.0; |
2003 temp4 = 0.0; | |
126 | 2004 } |
2005 else | |
260
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2006 temp3 = - temp3 / (pres_tissue+16)[ci]; |
251 | 2007 if( 0.0 < temp3 && temp3 < 1.0 ) |
126 | 2008 { |
260
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2009 overlay float var_He_halftime = (buhlmann_ht+16)[ci]; |
261 | 2010 assert( 1.51 <= var_He_halftime && var_He_halftime <= 240.03 ); |
260
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2011 |
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2012 temp3 = log(1.0 - temp3) / -0.6931; // temp1 is the multiples of half times necessary. |
126 | 2013 // 0.6931 is ln(2), because the math function log() calculates with a base of e not 2 as requested. |
2014 // minus because log is negative | |
165 | 2015 temp4 = var_He_halftime * temp3 / float_desaturation_multiplier; // time necessary (in minutes ) for "complete" desaturation, new in v.101 float_desaturation_multiplier |
126 | 2016 } |
2017 else | |
2018 { | |
233 | 2019 temp3 = 0.0; |
2020 temp4 = 0.0; | |
126 | 2021 } |
116 | 2022 |
126 | 2023 // saturation_time (for flight) |
2024 if (temp4 > temp2) | |
203 | 2025 desat_time = (unsigned short)temp4; |
126 | 2026 else |
203 | 2027 desat_time = (unsigned short)temp2; |
252 | 2028 |
251 | 2029 if(desat_time > int_O_desaturation_time) |
2030 int_O_desaturation_time = desat_time; | |
116 | 2031 |
126 | 2032 // N2 saturation in multiples of halftime for display purposes |
2033 temp2 = temp1 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
2034 temp2 = temp2 + 80.0; // set center | |
2035 if (temp2 < 0.0) | |
2036 temp2 = 0.0; | |
2037 if (temp2 > 255.0) | |
2038 temp2 = 255.0; | |
2039 char_O_tissue_saturation[ci] = (char)temp2; | |
233 | 2040 |
126 | 2041 // He saturation in multiples of halftime for display purposes |
2042 temp4 = temp3 * 20.0; // 0 = 1/8, 120 = 0, 249 = 8 | |
2043 temp4 = temp4 + 80.0; // set center | |
2044 if (temp4 < 0.0) | |
2045 temp4 = 0.0; | |
2046 if (temp4 > 255.0) | |
2047 temp4 = 255.0; | |
167 | 2048 (char_O_tissue_saturation+16)[ci] = (char)temp4; |
126 | 2049 } // for |
167 | 2050 } |
116 | 2051 |
167 | 2052 ////////////////////////////////////////////////////////////////////////////// |
2053 // calc_wo_deco_step_1_min | |
2054 // | |
116 | 2055 // FIXED N2 Ratio |
2056 // optimized in v.101 (...saturation_multiplier) | |
2057 // desaturation slowed down to 70,42% | |
167 | 2058 // |
2059 static void calc_wo_deco_step_1_min(void) | |
116 | 2060 { |
251 | 2061 assert( 800 < int_I_pres_surface && int_I_pres_surface < 1100 ); |
2062 assert( 800 < int_I_pres_respiration && int_I_pres_respiration < 1100 ); | |
2063 assert( 100 <= char_I_saturation_multiplier && char_I_saturation_multiplier < 200 ); | |
2064 assert( 0 < char_I_desaturation_multiplier && char_I_desaturation_multiplier <= 100 ); | |
2065 | |
116 | 2066 if(flag_in_divemode) |
2067 { | |
2068 flag_in_divemode = 0; | |
2069 set_dbg_end_of_dive(); | |
2070 } | |
122
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2071 |
126 | 2072 N2_ratio = 0.7902; // FIXED, sum lt. buehlmann |
233 | 2073 pres_respiration = int_I_pres_respiration * 0.001; // assembler code uses different digit system |
2074 pres_surface = int_I_pres_surface * 0.001; // the b"uhlmann formula using pres_surface does not use the N2_ratio | |
236 | 2075 ppN2 = N2_ratio * (pres_respiration - ppWVapour); // ppWVapour is the extra pressure in the body |
200 | 2076 ppHe = 0.0; |
126 | 2077 float_desaturation_multiplier = char_I_desaturation_multiplier / 142.0; // new in v.101 (70,42%/100.=142) |
197 | 2078 float_saturation_multiplier = char_I_saturation_multiplier * 0.01; |
126 | 2079 |
192 | 2080 calc_tissue(1); // update the pressure in the 32 tissues in accordance with the new ambient pressure |
167 | 2081 |
169
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2082 clear_deco_table(); |
200 | 2083 char_O_deco_status = 3; // surface new in v.102 : stays in surface state. |
126 | 2084 char_O_nullzeit = 0; |
168 | 2085 int_O_ascenttime = 0; |
126 | 2086 calc_gradient_factor(); |
167 | 2087 } |
126 | 2088 |
167 | 2089 ////////////////////////////////////////////////////////////////////////////// |
2090 ////////////////////////////////////////////////////////////////////////////// | |
2091 ////////////////////////////////// deco_hash ///////////////////////////////// | |
2092 ////////////////////////////////////////////////////////////////////////////// | |
2093 ////////////////////////////////////////////////////////////////////////////// | |
126 | 2094 |
184 | 2095 #ifndef CROSS_COMPILE |
116 | 2096 void deco_hash(void) |
2097 { | |
167 | 2098 overlay unsigned char md_i, md_j; // Loop index. |
2099 overlay unsigned char md_t; | |
2100 overlay unsigned char md_buffer[16]; | |
2101 overlay unsigned char md_temp; | |
203 | 2102 overlay unsigned short md_pointer; |
167 | 2103 |
122
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2104 RESET_C_STACK |
126 | 2105 |
2106 // init | |
164 | 2107 for(md_i=0;md_i<16;md_i++) |
126 | 2108 { |
2109 md_state[md_i] = 0; | |
164 | 2110 char_O_hash[md_i] = 0; |
126 | 2111 } // for md_i 16 |
116 | 2112 |
126 | 2113 _asm |
167 | 2114 movlw 0x01 // md_pi address. |
2115 movwf TBLPTRU,0 | |
2116 movlw 0x7E | |
2117 movwf TBLPTRH,0 | |
2118 movlw 0x00 | |
2119 movwf TBLPTRL,0 | |
126 | 2120 _endasm; |
165 | 2121 md_i = 0; |
2122 do { | |
126 | 2123 _asm |
2124 TBLRDPOSTINC | |
2125 movff TABLAT,md_temp | |
2126 _endasm | |
165 | 2127 md_pi_subst[md_i++] = md_temp; |
2128 } while( md_i != 0 ); | |
2129 | |
126 | 2130 _asm |
167 | 2131 movlw 0x00 |
2132 movwf TBLPTRU,0 | |
2133 movlw 0x00 | |
2134 movwf TBLPTRH,0 | |
2135 movlw 0x00 | |
2136 movwf TBLPTRL,0 | |
126 | 2137 _endasm |
167 | 2138 |
126 | 2139 // cycle buffers |
2140 for (md_pointer=0x0000;md_pointer<0x17f3;md_pointer++) | |
2141 { | |
2142 md_t = 0; | |
2143 for (md_i=0;md_i<16;md_i++) | |
2144 { | |
2145 if(md_pointer == 9) | |
164 | 2146 md_temp = char_O_hash[md_i]; |
126 | 2147 else |
2148 { | |
2149 _asm | |
167 | 2150 TBLRDPOSTINC |
2151 movff TABLAT,md_temp | |
126 | 2152 _endasm |
2153 } // else | |
167 | 2154 |
2155 md_buffer[md_i] = md_temp; | |
186 | 2156 md_state[md_i+16] = md_temp; |
2157 md_state[md_i+32] = (unsigned char)(md_temp ^ md_state[md_i]); | |
126 | 2158 } // for md_i 16 |
2159 | |
2160 for (md_i=0;md_i<18;md_i++) | |
2161 { | |
2162 for (md_j=0;md_j<48;md_j++) | |
2163 { | |
167 | 2164 md_state[md_j] ^= md_pi_subst[md_t]; |
126 | 2165 md_t = md_state[md_j]; |
2166 } // for md_j 48 | |
2167 md_t = (unsigned char)(md_t+1); | |
2168 } // for md_i 18 | |
164 | 2169 md_t = char_O_hash[15]; |
126 | 2170 |
2171 for (md_i=0;md_i<16;md_i++) | |
2172 { | |
167 | 2173 char_O_hash[md_i] ^= md_pi_subst[(md_buffer[md_i] ^ md_t)]; |
164 | 2174 md_t = char_O_hash[md_i]; |
126 | 2175 } // for md_i 16 |
2176 } // for md_pointer | |
116 | 2177 } // void deco_hash(void) |
184 | 2178 #endif |
116 | 2179 |
167 | 2180 ////////////////////////////////////////////////////////////////////////////// |
2181 // deco_clear_CNS_fraction | |
2182 // | |
116 | 2183 // new in v.101 |
167 | 2184 // |
116 | 2185 void deco_clear_CNS_fraction(void) |
2186 { | |
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2187 RESET_C_STACK |
237 | 2188 |
126 | 2189 CNS_fraction = 0.0; |
2190 char_O_CNS_fraction = 0; | |
167 | 2191 } |
116 | 2192 |
167 | 2193 ////////////////////////////////////////////////////////////////////////////// |
2194 // deco_calc_CNS_fraction | |
2195 // | |
116 | 2196 // new in v.101 |
2197 // optimized in v.102 : with new variables char_I_actual_ppO2 and actual_ppO2 | |
167 | 2198 // |
116 | 2199 // Input: char_I_actual_ppO2 |
292 | 2200 // char_I_step_is_1min : use 1min steps instead of 2sec. |
116 | 2201 // Output: char_O_CNS_fraction |
2202 // Uses and Updates: CNS_fraction | |
2203 // Uses: acutal_ppO2 | |
167 | 2204 // |
116 | 2205 void deco_calc_CNS_fraction(void) |
2206 { | |
167 | 2207 overlay float actual_ppO2; |
292 | 2208 overlay float time_factor = 1.0f; |
126 | 2209 RESET_C_STACK |
167 | 2210 |
237 | 2211 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); |
2212 assert( char_I_actual_ppO2 > 15 ); | |
2213 | |
126 | 2214 actual_ppO2 = (float)char_I_actual_ppO2 / 100.0; |
292 | 2215 if( char_I_step_is_1min ) |
2216 time_factor = 30.0f; | |
116 | 2217 |
126 | 2218 if (char_I_actual_ppO2 < 50) |
292 | 2219 ; // no changes |
126 | 2220 else if (char_I_actual_ppO2 < 60) |
292 | 2221 CNS_fraction += time_factor/(-54000.0 * actual_ppO2 + 54000.0); |
126 | 2222 else if (char_I_actual_ppO2 < 70) |
292 | 2223 CNS_fraction += time_factor/(-45000.0 * actual_ppO2 + 48600.0); |
126 | 2224 else if (char_I_actual_ppO2 < 80) |
292 | 2225 CNS_fraction += time_factor/(-36000.0 * actual_ppO2 + 42300.0); |
126 | 2226 else if (char_I_actual_ppO2 < 90) |
292 | 2227 CNS_fraction += time_factor/(-27000.0 * actual_ppO2 + 35100.0); |
126 | 2228 else if (char_I_actual_ppO2 < 110) |
292 | 2229 CNS_fraction += time_factor/(-18000.0 * actual_ppO2 + 27000.0); |
126 | 2230 else if (char_I_actual_ppO2 < 150) |
292 | 2231 CNS_fraction += time_factor/(-9000.0 * actual_ppO2 + 17100.0); |
126 | 2232 else if (char_I_actual_ppO2 < 160) |
292 | 2233 CNS_fraction += time_factor/(-22500.0 * actual_ppO2 + 37350.0); |
126 | 2234 else if (char_I_actual_ppO2 < 165) |
292 | 2235 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 | 2236 else if (char_I_actual_ppO2 < 170) |
292 | 2237 CNS_fraction += time_factor*0.00102; // example calculation: Sqrt((1.7/1.55)^20)*0.000404 |
126 | 2238 else if (char_I_actual_ppO2 < 175) |
292 | 2239 CNS_fraction += time_factor*0.00136; |
126 | 2240 else if (char_I_actual_ppO2 < 180) |
292 | 2241 CNS_fraction += time_factor*0.00180; |
126 | 2242 else if (char_I_actual_ppO2 < 185) |
292 | 2243 CNS_fraction += time_factor*0.00237; |
126 | 2244 else if (char_I_actual_ppO2 < 190) |
292 | 2245 CNS_fraction += time_factor*0.00310; |
126 | 2246 else if (char_I_actual_ppO2 < 195) |
292 | 2247 CNS_fraction += time_factor*0.00401; |
126 | 2248 else if (char_I_actual_ppO2 < 200) |
292 | 2249 CNS_fraction += time_factor*0.00517; |
126 | 2250 else if (char_I_actual_ppO2 < 230) |
292 | 2251 CNS_fraction += time_factor*0.0209; |
126 | 2252 else |
292 | 2253 CNS_fraction += time_factor*0.0482; // value for 2.5 |
116 | 2254 |
126 | 2255 if (CNS_fraction > 2.5) |
2256 CNS_fraction = 2.5; | |
2257 if (CNS_fraction < 0.0) | |
2258 CNS_fraction = 0.0; | |
2259 | |
2260 char_O_CNS_fraction = (char)((CNS_fraction + 0.005)* 100.0); | |
167 | 2261 } |
116 | 2262 |
167 | 2263 ////////////////////////////////////////////////////////////////////////////// |
2264 // deco_calc_CNS_decrease_15min | |
2265 // | |
116 | 2266 // new in v.101 |
167 | 2267 // |
116 | 2268 // calculates the half time of 90 minutes in 6 steps of 15 min |
200 | 2269 // (Used in sleepmode, for low battery mode). |
167 | 2270 // |
116 | 2271 // Output: char_O_CNS_fraction |
2272 // Uses and Updates: CNS_fraction | |
167 | 2273 // |
116 | 2274 void deco_calc_CNS_decrease_15min(void) |
2275 { | |
237 | 2276 RESET_C_STACK |
2277 assert( 0.0 <= CNS_fraction && CNS_fraction <= 2.5 ); | |
2278 | |
126 | 2279 CNS_fraction = 0.890899 * CNS_fraction; |
167 | 2280 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); |
2281 } | |
116 | 2282 |
167 | 2283 ////////////////////////////////////////////////////////////////////////////// |
2284 // deco_calc_percentage | |
2285 // | |
116 | 2286 // new in v.101 |
167 | 2287 // |
116 | 2288 // calculates int_I_temp * char_I_temp / 100 |
2289 // output is int_I_temp | |
200 | 2290 // |
2291 // Used to compute NoFly remaining time. | |
222
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2292 // |
116 | 2293 void deco_calc_percentage(void) |
2294 { | |
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2295 RESET_C_STACK |
222
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2296 |
237 | 2297 assert( 60 <= char_I_temp && char_I_temp <= 100 ); |
2298 assert( 0 <= int_I_temp && int_I_temp < 2880 ); // Less than 48h... | |
2299 | |
222
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2300 int_I_temp = (unsigned short)(((float)int_I_temp * (float)char_I_temp) * 0.01 ); |
237 | 2301 |
2302 assert( int_I_temp < 1440 ); // Less than 24h... | |
222
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2303 } |
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2304 |
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2305 |
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2306 ////////////////////////////////////////////////////////////////////////////// |
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2307 // deco_gas_volumes |
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2308 // |
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2309 // new in v.111 |
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2310 // |
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2311 // calculates volumes for each gas. |
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2312 // |
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2313 // Input: char_I_bottom_depth, char_I_bottom_time for planned dive. |
240
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2314 // Gas list. |
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2315 // char_I_first_gas is the bottom gas. |
222
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2316 // decoplan (char_O_deco_depth, char_O_deco_time). |
234
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2317 // CF#54 == TRUE if shallowest stop first. |
275
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2318 // CF#56 == bottom deci-liters/minutes (0.5 .. 50.0) or bar/min. |
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2319 // CF#57 == deco deci-liters/minutes (0.5 .. 50.0) or bar/min. |
224 | 2320 // Output: int_O_gas_volumes[0..4] in litters * 0.1 |
222
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2321 // |
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2322 void deco_gas_volumes(void) |
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2323 { |
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2324 overlay float volumes[5]; |
265 | 2325 overlay float bottom_usage, ascent_usage; |
234
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2326 overlay unsigned char i, deepest_first; |
241 | 2327 overlay unsigned char gas; |
222
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2328 RESET_C_STACK |
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2329 |
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2330 //---- initialize with bottom consumption -------------------------------- |
240
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2331 for(i=0; i<5; ++i) // Nothing yet... |
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2332 volumes[i] = 0.0; |
222
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2333 |
241 | 2334 assert(1 <= char_I_first_gas && char_I_first_gas <= 5); |
2335 gas = char_I_first_gas - 1; | |
2336 | |
265 | 2337 bottom_usage = read_custom_function(56) * 0.1; |
2338 if( bottom_usage > 0.0 ) | |
2339 volumes[gas] | |
2340 = (char_I_bottom_depth*0.1 + 1.0) // Use Psurface = 1.0 bar. | |
2341 * char_I_bottom_time // in minutes. | |
2342 * bottom_usage; // In liter/minutes. | |
2343 else | |
2344 volumes[gas] = 65535.0; | |
222
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2345 |
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2346 //---- Ascent usage ------------------------------------------------------ |
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2347 |
234
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2348 deepest_first = read_custom_function(54) == 0; |
240
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2349 ascent_usage = read_custom_function(57) * 0.1; // In liter/minutes. |
222
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2350 |
224 | 2351 // Usage up to the first stop: |
2352 // - computed at MAX depth (easier, safer), | |
222
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2353 // - with an ascent speed of 10m/min. |
224 | 2354 // - with ascent litter / minutes. |
222
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2355 // - still using bottom gas: |
265 | 2356 if( ascent_usage > 0.0 ) |
2357 volumes[gas] | |
2358 += (char_I_bottom_depth*0.1 + 1.0) // Depth -> bar | |
2359 * (char_I_bottom_depth - char_O_first_deco_depth) * 0.1 // ascent time (min) | |
2360 * ascent_usage; // Consumption ( xxx / min @ 1 bar) | |
2361 else | |
2362 volumes[gas] = 65535.0; | |
222
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2363 |
234
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2364 for(i=0; i<32; ++i) |
222
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2365 { |
241 | 2366 overlay unsigned char j; |
234
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2367 overlay unsigned char depth, time, ascent; |
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2368 |
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2369 // Manage stops in reverse order (CF#54) |
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2370 if( deepest_first ) |
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2371 { |
241 | 2372 time = char_O_deco_time[i]; |
234
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2373 if( time == 0 ) break; // End of table: done. |
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2374 |
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2375 ascent = depth = char_O_deco_depth[i] & 0x7F; |
234
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2376 if( i < 31 ) |
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2377 ascent -= char_O_deco_depth[i+1] & 0x7F; |
234
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2378 } |
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2379 else |
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2380 { |
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2381 time = char_O_deco_time[31-i]; |
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2382 if( time == 0 ) continue; // not yet: still searh table. |
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2383 |
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2384 ascent = depth = char_O_deco_depth[31-i] & 0x7F; |
234
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2385 if( i < 31 ) |
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2386 ascent -= char_O_deco_depth[30-i] & 0x7F; |
234
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2387 } |
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2388 |
222
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2389 // Gas switch depth ? |
241 | 2390 for(j=0; j<5; ++j) |
222
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2391 { |
234
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2392 if( depth <= char_I_deco_gas_change[j] ) |
241 | 2393 if( !char_I_deco_gas_change[gas] || (char_I_deco_gas_change[gas] > char_I_deco_gas_change[j]) ) |
224 | 2394 gas = j; |
222
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2395 } |
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2396 |
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2397 // usage during stop: |
224 | 2398 // Note: because first gas is not in there, increment gas+1 |
265 | 2399 if( ascent_usage > 0.0 ) |
2400 volumes[gas] += (depth*0.1 + 1.0) // depth --> bar. | |
2401 * time // in minutes. | |
2402 * ascent_usage // in xxx / min @ 1bar. | |
2403 // Plus usage during ascent to the next stop, at 10m/min. | |
2404 + (depth*0.1 + 1.0) | |
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2405 * ascent*0.1 // metre --> min |
265 | 2406 * ascent_usage; |
2407 else | |
2408 volumes[gas] = 65535.0; | |
222
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2409 } |
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2410 |
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2411 //---- convert results for the ASM interface ----------------------------- |
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2412 for(i=0; i<5; ++i) |
224 | 2413 if( volumes[i] > 6553.4 ) |
2414 int_O_gas_volumes[i] = 65535; | |
222
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2415 else |
224 | 2416 int_O_gas_volumes[i] = (unsigned short)(volumes[i]*10.0 + 0.5); |
116 | 2417 } |
2418 | |
167 | 2419 ////////////////////////////////////////////////////////////////////////////// |
2420 | |
116 | 2421 void deco_push_tissues_to_vault(void) |
2422 { | |
167 | 2423 overlay unsigned char x; |
122
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2424 RESET_C_STACK |
167 | 2425 |
116 | 2426 cns_vault = CNS_fraction; |
167 | 2427 for (x=0;x<32;x++) |
2428 pres_tissue_vault[x] = pres_tissue[x]; | |
116 | 2429 } |
167 | 2430 |
116 | 2431 void deco_pull_tissues_from_vault(void) |
2432 { | |
167 | 2433 overlay unsigned char x; |
122
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2434 RESET_C_STACK |
167 | 2435 |
2436 for (x=0;x<32;x++) | |
2437 pres_tissue[x] = pres_tissue_vault[x]; | |
292 | 2438 |
2439 // Restore both CNS variable, too. | |
2440 CNS_fraction = cns_vault; | |
2441 char_O_CNS_fraction = (char)(CNS_fraction * 100.0 + 0.5); | |
116 | 2442 } |
2443 | |
167 | 2444 ////////////////////////////////////////////////////////////////////////////// |
2445 // | |
184 | 2446 #ifndef CROSS_COMPILE |
2447 void main() {} | |
2448 #endif |