Mercurial > public > mk2
annotate code_part1/OSTC_code_asm_part1/isr.asm @ 364:bdcc5a5aa8d5
Fix minor rounding in B?hlmann half-times.
author | JeanDo |
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date | Thu, 09 Jun 2011 16:05:16 +0200 |
parents | 91352bb698cf |
children | 88660a400338 |
rev | line source |
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0 | 1 |
2 ; OSTC - diving computer code | |
3 ; Copyright (C) 2008 HeinrichsWeikamp GbR | |
4 | |
5 ; This program is free software: you can redistribute it and/or modify | |
6 ; it under the terms of the GNU General Public License as published by | |
7 ; the Free Software Foundation, either version 3 of the License, or | |
8 ; (at your option) any later version. | |
9 | |
10 ; This program is distributed in the hope that it will be useful, | |
11 ; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 ; GNU General Public License for more details. | |
14 | |
15 ; You should have received a copy of the GNU General Public License | |
16 ; along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | |
18 | |
19 ; written by: Matthias Heinrichs, info@heinrichsweikamp.com | |
20 ; written: 10/30/05 | |
21 ; last updated: 05/16/08 | |
22 ; known bugs: | |
23 ; ToDo: | |
24 | |
25 ; the timer1 module interrupts every 62.5ms (16x/second) | |
26 ; temperature and pressure is averaged over 4 measurements | |
27 ; flag pressure_refresh is set every 500ms | |
28 ; and provides accurate pressure (+/-1mBar stable) and temperature (0.1C stable) | |
29 | |
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30 ;============================================================================= |
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31 ; Copy a 16bit value from ISR modified registers to main registers. |
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32 ; |
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33 ; Because the ISR can happend at any time, the read should be redone if bytes |
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34 ; changed inbetween. |
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35 ; |
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36 ; Trashes: WREG and TABLAT |
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37 ; NOTE: Destination might be in any bank, so be BANK SAFE. |
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38 ; |
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39 SAFE_2BYTE_COPY MACRO from, to |
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40 local retry |
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41 retry: |
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42 movff from+1,WREG ; High byte in W. |
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43 movff WREG,to+1 ; and destination. |
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44 movff from+0,to+0 ; Copy low byte. |
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45 movff from+1,TABLAT ; another bank-safe read. |
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46 xorwf TABLAT,W ; High byte changed ? |
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47 bnz retry |
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48 ENDM |
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49 |
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50 ;============================================================================= |
0 | 51 uartint: |
52 btfsc simulatormode_active ; are we in simulatormode? | |
53 bra simulator_int ; Yes, reading is depth in m! | |
54 | |
55 movff RCREG,uart1_temp | |
56 movlw d'96' | |
57 subwf uart1_temp,F | |
58 dcfsnz uart1_temp,F ; "a" | |
59 bsf dump_external_eeprom ; set flag | |
60 dcfsnz uart1_temp,F ; "b" | |
61 bsf uart_settime ; set flag | |
62 dcfsnz uart1_temp,F ; "c" | |
63 bsf simulatormode_active ; set flag | |
64 dcfsnz uart1_temp,F ; "d" | |
65 bsf internal_eeprom_write ; set flag | |
66 dcfsnz uart1_temp,F ; "e" | |
67 bsf uart_send_hash ; set flag | |
68 dcfsnz uart1_temp,F ; "f" | |
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Gas Setup page 2 reworked, Texts 107, 108, 109,150, 149, 168, 42, 43, 53,54,55, 165 need update in french, spanish and german
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69 bsf uart_reset_battery_stats ; set flag |
0 | 70 dcfsnz uart1_temp,F ; "g" |
71 bsf uart_send_int_eeprom ; set flag | |
72 dcfsnz uart1_temp,F ; "h" | |
73 bsf uart_reset_decodata ; set flag | |
74 dcfsnz uart1_temp,F ; "i" | |
75 bsf internal_eeprom_write2 ; set flag | |
76 dcfsnz uart1_temp,F ; "j" | |
77 bsf uart_send_int_eeprom2 ; set flag | |
78 dcfsnz uart1_temp,F ; "k" | |
79 bsf uart_store_tissue_data ; set flag | |
330 | 80 dcfsnz uart1_temp,F ; "l" |
81 bsf uart_dump_screen ; set flag | |
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82 |
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83 movlw 0xC1 |
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84 cpfseq RCREG ; 115200Baud Bootloader request? |
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85 bra uartint1 ; No |
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86 bsf uart_115200_bootloader ; Yes, set Flag |
0 | 87 |
88 uartint1: | |
89 movf RCREG,w ; unload RCREG in stand-alone simulator mode | |
90 bcf PIR1,RCIF ; Clear flag | |
91 bcf RCSTA,CREN ; Clear receiver status | |
92 bsf RCSTA,CREN | |
93 return | |
94 | |
95 simulator_int: | |
345 | 96 movlw 'l' ; Received 'l' dump-screen command ? |
97 xorwf RCREG,W | |
98 bnz simulator_int2 ; NO: skip | |
99 bsf uart_dump_screen ; YES: set flag | |
100 bra uartint1 ; and this is not a depth... | |
101 | |
102 simulator_int2: | |
0 | 103 btfsc standalone_simulator ; ignore in standalone simulator mode |
104 bra uartint1 | |
105 | |
21 | 106 bsf LED_blue |
0 | 107 tstfsz RCREG ; =0x00? |
108 bra simulator_int1 ; No | |
109 incf RCREG,F ; Yes, so force RCREG=1 | |
110 | |
111 simulator_int1: | |
112 movf RCREG,w ; depth in m | |
347 | 113 movwf PRODL ; Copy |
114 | |
115 movlw d'140' ; Limit to 130m | |
116 cpfslt PRODL ; compare with value in UART | |
117 movwf PRODL ; Overwrite reading | |
118 | |
119 movf PRODL,w ; depth in m | |
0 | 120 mullw d'100' ; result will be mbar |
121 movff PRODL,sim_pressure+0 ; stored for pressure overwrite | |
122 movff PRODH,sim_pressure+1 | |
123 bra uartint1 ; exit uart int | |
124 | |
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125 ;============================================================================= |
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126 |
238 | 127 switch_left_int: |
0 | 128 bcf INTCON,INT0IF ; Clear flag |
129 | |
130 btfsc T0CON,TMR0ON ; Timer0 running? | |
131 bra timer0_restart ; Yes, restart | |
132 | |
266 | 133 ; OSTC 2N has flipped screen and exchanged switches... |
134 movff win_flags,WREG ; Get into Bank0 | |
135 btfss WREG,0 | |
0 | 136 bsf switch_left ; Set flag, button press is OK |
266 | 137 btfsc WREG,0 |
138 bsf switch_right ; Set flag, button press is OK | |
0 | 139 |
140 bsf T0CON,TMR0ON ; Start Timer 0 | |
141 return | |
142 | |
143 | |
238 | 144 switch_right_int: |
0 | 145 bcf INTCON3,INT1IF ; Clear flag |
146 | |
147 btfsc T0CON,TMR0ON ; Timer0 running? | |
148 bra timer0_restart ; Yes, restart | |
149 | |
266 | 150 ; OSTC 2N has flipped screen and exchanged switches... |
151 movff win_flags,WREG ; Get into Bank0 | |
152 btfsc WREG,0 | |
153 bsf switch_left ; Set flag, button press is OK | |
154 btfss WREG,0 | |
0 | 155 bsf switch_right ; Set flag, button press is OK |
156 | |
157 bsf T0CON,TMR0ON ; Start Timer 0 | |
158 return | |
159 | |
160 timer0_restart: | |
161 bcf INTCON,TMR0IF ; Clear flag | |
162 clrf T0CON ; Timer0 | |
163 clrf TMR0H | |
164 clrf TMR0L | |
165 bsf T0CON,TMR0ON ; Start Timer 0 | |
166 return | |
167 | |
168 timer0int: | |
169 bcf INTCON,TMR0IF ; Clear flag | |
170 bcf T0CON,TMR0ON ; Stop Timer 0 | |
171 clrf TMR0H | |
172 clrf TMR0L | |
173 return | |
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174 |
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175 ;============================================================================= |
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176 ; |
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177 |
0 | 178 timer1int: |
179 bcf PIR1,TMR1IF ; Clear flag | |
180 | |
181 timer1int_debug: | |
21 | 182 bcf LED_red ; LEDr off (For charge indicator) |
0 | 183 |
184 movlw 0x08 ; Timer1 int after 62.5ms (=16/second) | |
185 cpfslt TMR1H ; Did we miss a 1/16 second? | |
186 incf timer1int_counter1,F ; Yes, add extra 1/16 second | |
187 | |
188 movlw 0x08 ; Timer1 int after 62.5ms (=16/second) | |
189 subwf TMR1H,F | |
190 | |
238 | 191 incf timer1int_counter1,F ; Increase timer1 counter |
192 | |
0 | 193 movlw d'15' ; One second 16 |
194 cpfsgt timer1int_counter1 | |
195 bra sensor_int_pre ; only pressure sensor | |
238 | 196 rcall RTCisr ; adjust time, then query pressure sensor |
0 | 197 |
198 sensor_int_pre: | |
238 | 199 btfsc sleepmode ; In sleepmode? |
200 return ; Yes | |
0 | 201 |
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202 ; Sensor interput do poll the presure/temperature sensor, download results, |
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203 ; compute compensations, and store results in various shared variables. |
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204 ; |
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205 ; Input: interupt (every 62.5msec == 16Hz), sensor, |
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206 ; last_surfpressure:2. |
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207 ; |
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208 ; Output: amb_pressure:2, |
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209 ; temperature:2, |
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210 ; rel_pressure:2, |
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211 ; and the pressure_refresh flag. |
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212 ; |
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213 ; NOTE: averaging (4 successive value, as recommended in the MS5535 datasheet) |
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214 ; is done on private variables, to avoid trashing data while reading it |
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215 ; from the main code. |
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216 ; |
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217 ; NOTE: Because there is no atomic 16bits load/stores, we need to check twice |
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218 ; the read data is correct. Ie. SAFE_2BYTE_COPY is mandatory to get |
344 | 219 ; amb_pressure, temperature or rel_pressure |
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220 ; |
0 | 221 sensor_int: |
222 btfsc no_sensor_int ; No sensor interrupt (because it's addressed during sleep) | |
223 return | |
224 | |
238 | 225 incf timer1int_counter2,F ; counts to eight for state maschine |
0 | 226 |
238 | 227 ; State 1: Clear flags and average registers, get temperature (51us) and start pressure integration (73,5us) |
228 ; State 2: Get pressure (51us), start temperature integration (73,5us) and calculate temperature compensated pressure (233us) | |
229 ; State 3: Get temperature (51us) and start pressure integration (73,5us) | |
230 ; State 4: Get pressure (51us), start temperature integration (73,5us) and calculate temperature compensated pressure (233us) | |
231 ; State 5: Get temperature (51us) and start pressure integration (73,5us) | |
232 ; State 6: Get pressure (51us), start temperature integration (73,5us) and calculate temperature compensated pressure (233us) | |
233 ; State 7: Get temperature (51us) and start pressure integration (73,5us) | |
234 ; State 8: Get pressure (51us), start temperature integration (73,5us), calculate temperature compensated pressure (233us) and build average for half-second update of tempperature and pressure | |
235 | |
236 movff timer1int_counter2,isr_divB ; isr_divB used as temp here... | |
237 dcfsnz isr_divB,F | |
238 bra sensor_int_state1_plus_restart ; Do State 1 | |
239 dcfsnz isr_divB,F | |
240 bra sensor_int_state2 ; Do State 2 | |
241 dcfsnz isr_divB,F | |
242 bra sensor_int_state1 ; Do State 3 | |
243 dcfsnz isr_divB,F | |
244 bra sensor_int_state2 ; Do State 4 | |
245 dcfsnz isr_divB,F | |
246 bra sensor_int_state1 ; Do State 5 | |
247 dcfsnz isr_divB,F | |
248 bra sensor_int_state2 ; Do State 6 | |
249 dcfsnz isr_divB,F | |
250 bra sensor_int_state1 ; Do State 7 | |
251 ; bra sensor_int2_plus_average ; Do State 8 | |
252 | |
253 ;sensor_int2_plus_average: | |
254 rcall sensor_int_state2 | |
255 sensor_int2_plus_average2: | |
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256 bcf STATUS,C ; clear carry bit. |
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257 rrcf amb_pressure_avg+1 ; amb_pressure sum / 2 |
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258 rrcf amb_pressure_avg+0 |
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259 bcf STATUS,C ; clear carry bit, twice. |
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260 rrcf amb_pressure_avg+1 ; amb_pressure sum / 4 |
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261 rrcf amb_pressure_avg+0 |
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262 |
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263 movff amb_pressure_avg+1,amb_pressure+1 ; copy into actual register |
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264 movff amb_pressure_avg+0,amb_pressure+0 |
238 | 265 |
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266 bcf STATUS,C |
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267 btfsc temperature_avg+1,7 ; Copy sign bit to carry |
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268 bsf STATUS,C |
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269 rrcf temperature_avg+1 ; Signed temperature /2 |
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270 rrcf temperature_avg+0 |
0 | 271 |
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272 bcf STATUS,C |
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273 btfsc temperature_avg+1,7 ; Copy sign bit to carry |
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274 bsf STATUS,C |
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275 rrcf temperature_avg+1 ; Signed temperature /4 |
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276 rrcf temperature_avg+0 |
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277 |
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278 movff temperature_avg+1,temperature+1 |
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279 movff temperature_avg+0,temperature+0 |
0 | 280 |
281 bsf pressure_refresh ; Set flag! Temp and pressure were updated! | |
238 | 282 clrf timer1int_counter2 ; Then reset State counter |
0 | 283 |
284 btfss simulatormode_active ; are we in simulator mode? | |
285 bra comp_air_pressure ; no | |
286 | |
287 comp_air_pressure0: | |
288 movlw LOW d'1000' ; yes, so simulate 1Bar surface pressure | |
289 movwf last_surfpressure+0 | |
290 movlw HIGH d'1000' | |
291 movwf last_surfpressure+1 | |
292 | |
293 comp_air_pressure: | |
294 movf last_surfpressure+0,W ; compensate airpressure | |
295 subwf amb_pressure+0,W | |
238 | 296 movwf rel_pressure+0 ; rel_pressure stores depth! |
0 | 297 |
298 movf last_surfpressure+1,W | |
299 subwfb amb_pressure+1,W | |
300 movwf rel_pressure+1 | |
238 | 301 btfss STATUS,N ; result is below zero? |
302 return | |
303 clrf rel_pressure+0 ; Yes, do not display negative depths | |
304 clrf rel_pressure+1 ; e.g. when surface air pressure dropped during the dive | |
0 | 305 return |
238 | 306 |
307 sensor_int_state1_plus_restart: | |
340
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308 ;;; bcf pressure_refresh ; clear flags |
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BUGFIX save negativ temperatures in logbook (bbbug #6)
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parents:
297
diff
changeset
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309 clrf amb_pressure_avg+0 ; pressure average registers |
ecbbbd423e86
BUGFIX save negativ temperatures in logbook (bbbug #6)
JeanDo
parents:
297
diff
changeset
|
310 clrf amb_pressure_avg+1 |
ecbbbd423e86
BUGFIX save negativ temperatures in logbook (bbbug #6)
JeanDo
parents:
297
diff
changeset
|
311 clrf temperature_avg+0 |
ecbbbd423e86
BUGFIX save negativ temperatures in logbook (bbbug #6)
JeanDo
parents:
297
diff
changeset
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312 clrf temperature_avg+1 |
238 | 313 |
314 sensor_int_state1: | |
315 call get_temperature_value ; State 1: Get temperature | |
316 call get_pressure_start ; and start pressure integration. | |
317 return ; Done. | |
318 | |
319 sensor_int_state2: | |
320 call get_pressure_value ; State2: Get pressure (51us) | |
321 call get_temperature_start ; and start temperature integration (73,5us) | |
340
ecbbbd423e86
BUGFIX save negativ temperatures in logbook (bbbug #6)
JeanDo
parents:
297
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changeset
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322 goto calculate_compensation ; calculate temperature compensated pressure (233us) |
238 | 323 |
340
ecbbbd423e86
BUGFIX save negativ temperatures in logbook (bbbug #6)
JeanDo
parents:
297
diff
changeset
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324 ;============================================================================= |
0 | 325 |
326 RTCisr: | |
327 clrf timer1int_counter1 ; counts to 16 (one second / 62.5ms) | |
328 bsf onesecupdate ; we have a new second! | |
329 | |
330 bcf STATUS,Z ; are we in dive mode? | |
331 btfss divemode | |
238 | 332 bra RTCisr2 ; No, must be surface or sleepmode |
0 | 333 |
334 incf samplesecs,F ; CF20 diving seconds done | |
335 decf samplesecs_value,W ; holds CF20 value (minus 1 into WREG) | |
336 cpfsgt samplesecs | |
238 | 337 bra RTCisr1 ; no |
0 | 338 |
339 clrf samplesecs ; clear counter... | |
340 bsf store_sample ; ...and set bit for profile storage | |
238 | 341 |
0 | 342 RTCisr1: |
343 ; Increase re-setable average depth divetime counter | |
111 | 344 incf average_divesecs+0,F ; increase stopwatch registers |
0 | 345 btfsc STATUS,Z |
111 | 346 incf average_divesecs+1,F ; increase stopwatch registers |
0 | 347 |
348 btfss divemode2 ; displayed divetime is running? | |
349 bra RTCisr2 ; No (e.g. too shallow) | |
350 | |
351 incf divesecs,F ; increase divetime registers | |
352 movlw d'59' | |
353 cpfsgt divesecs | |
354 bra RTCisr1a | |
238 | 355 |
0 | 356 clrf divesecs |
357 bsf realdive ; this bit is always set (again) if the dive is longer then one minute | |
358 | |
359 incf divemins+0,F ; increase divemins | |
360 btfsc STATUS,Z | |
361 incf divemins+1,F ; and now do the realtime clock routine anyway | |
362 | |
363 RTCisr1a: | |
364 btfss FLAG_apnoe_mode ; Are we in Apnoe mode? | |
365 bra RTCisr2 ; No, skip the following | |
366 | |
367 incf apnoe_secs,F ; increase descent registers | |
368 movlw d'59' | |
369 cpfsgt apnoe_secs | |
370 bra RTCisr2 | |
371 clrf apnoe_secs | |
372 | |
373 incf apnoe_mins,F ; increase descent mins | |
374 ; Now, do the RTC routine.... | |
375 RTCisr2: | |
376 incf secs,F ; adjusts seconds, minutes, hours, day, month and year. Checks for a leap year and works until 2099! | |
356 | 377 movlw d'60' |
359 | 378 cpfseq secs ; Secs == 60 ? |
379 return ; NO : done. | |
380 clrf secs ; YES: increment minutes instead... | |
0 | 381 bsf oneminupdate |
382 incf mins,F | |
383 movlw d'59' | |
384 cpfsgt mins | |
385 return | |
386 clrf mins | |
387 incf hours,F | |
388 movlw d'23' | |
389 cpfsgt hours | |
390 return | |
391 clrf hours | |
13 | 392 incf day,F |
43 | 393 movff time_correction_value,secs ; Correct too slow clock |
13 | 394 |
0 | 395 check_date: |
396 movff month,isr_divB ; new month? | |
397 dcfsnz isr_divB,F | |
398 movlw .31 | |
399 dcfsnz isr_divB,F | |
400 movlw .28 | |
401 dcfsnz isr_divB,F | |
402 movlw .31 | |
403 dcfsnz isr_divB,F | |
404 movlw .30 | |
405 dcfsnz isr_divB,F | |
406 movlw .31 | |
407 dcfsnz isr_divB,F | |
408 movlw .30 | |
409 dcfsnz isr_divB,F | |
410 movlw .31 | |
411 dcfsnz isr_divB,F | |
412 movlw .31 | |
413 dcfsnz isr_divB,F | |
414 movlw .30 | |
415 dcfsnz isr_divB,F | |
416 movlw .31 | |
417 dcfsnz isr_divB,F | |
418 movlw .30 | |
419 dcfsnz isr_divB,F | |
420 movlw .31 | |
421 cpfsgt day,1 | |
422 return | |
423 movlw .1 | |
424 movwf day | |
425 incf month,F | |
426 movlw .12 | |
427 cpfsgt month,1 | |
428 return | |
429 movlw .1 | |
430 movwf month | |
431 incf year,F | |
432 return |