Mercurial > public > hwos_code
annotate src/isr.asm @ 642:a9a0188091e4
fix rare upgrade issue with OSTC sport 2019 hardware
author | heinrichsweikamp |
---|---|
date | Thu, 14 Jan 2021 16:24:07 +0100 (2021-01-14) |
parents | 8c1f1f334275 |
children | 7d8a4c60ec1a 5b7fe7777425 |
rev | line source |
---|---|
0 | 1 ;============================================================================= |
2 ; | |
640 | 3 ; File isr.asm * combined next generation V3.11.1 |
0 | 4 ; |
5 ; INTERUPT subroutines | |
6 ; | |
7 ; Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved. | |
8 ;============================================================================= | |
9 ; HISTORY | |
10 ; 2011-05-24 : [jDG] Cleanups from initial Matthias code. | |
11 | |
275 | 12 #include "hwos.inc" |
582 | 13 #include "shared_definitions.h" ; Mailbox from/to p2_deco.c |
0 | 14 #include "ms5541.inc" |
15 #include "adc_lightsensor.inc" | |
623 | 16 |
17 extern restore_flash | |
0 | 18 |
634 | 19 |
0 | 20 ;============================================================================= |
634 | 21 ; Code to be placed at a fixed Position |
623 | 22 ; |
604 | 23 isr_high CODE 0x0008 ; high priority interrupts |
634 | 24 bra HighInt ; jump to ISR |
25 | |
26 isr_low CODE 0x00018 ; low priority interrupts *** not used *** | |
27 retfie FAST ; do an immediate return from IRQ | |
28 ; | |
29 ;============================================================================= | |
623 | 30 |
0 | 31 |
634 | 32 ;----------------------------------------------------------------------------- |
33 ; Interrupt Dispatcher Entry Point | |
623 | 34 ; |
0 | 35 HighInt: |
623 | 36 ; initialize interrupt code |
37 banksel isr_backup ; default bank for all ISR code is bank ISR data | |
629 | 38 movff PRODL,PROD_backup+0 ; back-up PRODL |
39 movff PRODH,PROD_backup+1 ; back-up PRODH | |
623 | 40 ; serve buttons |
41 btfsc PIR1,TMR1IF ; timer 1 interrupt (button hold-down timer)? | |
42 rcall timer1int ; YES - reset timer | |
640 | 43 btfsc PIR5,TMR4IF ; timer 4 interrupt (button debounce) |
44 rcall timer4int ; YES, serve the interrupt | |
623 | 45 btfsc INTCON,INT0IF ; right button activity? |
46 rcall isr_switch_right ; YES - check right switch | |
47 btfsc INTCON3,INT1IF ; left button activity? | |
48 rcall isr_switch_left ; YES - check left switch | |
0 | 49 |
623 | 50 IFDEF _external_sensor |
51 ; serve IR/S8 link timer | |
52 btfsc PIR3,RC2IF ; UART 2 interrupt? | |
53 rcall isr_uart2 ; YES - get a byte from the IR/S8 link | |
54 btfsc PIR2,TMR3IF ; timer 3 interrupt? | |
55 rcall isr_timer3 ; YES - check bytes received from IR/S8 link for being a valid telegram | |
629 | 56 ELSE |
57 bcf PIR3,RC2IF ; clear UART 2 interrupt | |
58 bcf PIR2,TMR3IF ; clear timer 3 interrupt | |
59 ; fill-up to keep code size identical to _external_sensor variant, see "Attention" below | |
60 nop | |
61 nop | |
623 | 62 ENDIF |
63 | |
64 ; serve pressure and temperature sensor | |
65 btfsc PIR5,TMR7IF ; timer 7 interrupt? | |
66 rcall isr_tmr7 ; YES - do every 62.5 ms tasks: read sensors, set CPU speed | |
67 | |
68 ; serve real-time clock (RTCC) | |
69 btfsc PIR3,RTCCIF ; real-time-clock interrupt? | |
70 rcall isr_rtcc ; YES - do every 1/2 s tasks: read RTC, trigger timed tasks, adjust CPU speed, gauge battery, etc. | |
113 | 71 |
623 | 72 ; clean up and exit |
629 | 73 movff PROD_backup+0,PRODL ; restore PRODL |
74 movff PROD_backup+1,PRODH ; restore PRODH | |
623 | 75 bsf trigger_isr_updates ; signal that the ISR had kicked in |
76 retfie FAST ; return from interrupt restoring BSR, STATUS and WREG | |
77 | |
113 | 78 |
634 | 79 ;----------------------------------------------------------------------------- |
80 ; CPU Speed Adjustment | |
623 | 81 ; |
82 isr_adjust_speed: | |
83 movff cpu_speed_request,cpu_speed_state ; acknowledge CPU speed request | |
0 | 84 |
623 | 85 btfsc speed_is_eco ; speed 'eco' requested? |
86 bra isr_set_speed_to_eco ; YES - set eco speed | |
87 btfsc speed_is_fastest ; NO - speed 'fastest' requested? | |
88 bra isr_set_speed_to_fastest ; YES - set fastest speed | |
89 ;bra isr_set_speed_to_normal ; NO - default to normal speed | |
0 | 90 |
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
378
diff
changeset
|
91 isr_set_speed_to_normal: |
629 | 92 clrf OSCTUNE ; switch off x4 PLL |
623 | 93 movlw b'01110010' ; select 16 MHz |
94 movwf OSCCON ; set prescaler | |
95 movlw T2CON_NORMAL ; PWM1 dimming factor for speed 'normal' | |
96 bra isr_adjust_speed_exit | |
97 | |
98 isr_set_speed_to_eco: | |
629 | 99 clrf OSCTUNE ; switch off x4 PLL |
623 | 100 movlw b'00110010' ; select 1 MHz |
101 movwf OSCCON ; set prescaler | |
102 movlw T2CON_ECO ; PWM1 dimming factor for speed 'eco' | |
103 bra isr_adjust_speed_exit | |
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
378
diff
changeset
|
104 |
623 | 105 isr_set_speed_to_fastest: |
106 movlw b'01110010' ; select 16 MHz by default | |
107 btfsc lv_core ; on OSTC with low voltage core? | |
108 movlw b'01100010' ; YES - reduce to 8 MHz | |
109 movwf OSCCON ; set prescaler | |
629 | 110 bsf OSCTUNE,6 ; switch on x4 PLL -> 64 MHz on high voltage core, 32 MHz on low voltage core |
623 | 111 movlw T2CON_FASTEST ; PWM1 dimming factor for speed 'fastest' |
640 | 112 bra isr_adjust_speed_exit |
623 | 113 |
114 ; Attention: fill-up the gap between the end of this section | |
115 ; and the next section which starts at 0x00080 !! | |
640 | 116 nop |
117 | |
623 | 118 block_0_code_end: ; marker to find end of code in block 0 in linker report file |
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
378
diff
changeset
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119 |
634 | 120 |
623 | 121 ;============================================================================= |
634 | 122 ; Code to be placed at a fixed Position: Jump-Vector for the Bootloader |
623 | 123 ; |
634 | 124 restore CODE 0x00080 ; restore first flash page from EEPROM |
125 | |
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
378
diff
changeset
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126 restore_flash_0x00080: |
582 | 127 goto restore_flash |
634 | 128 ; |
129 ;============================================================================= | |
130 | |
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
378
diff
changeset
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131 |
623 | 132 ;============================================================================= |
634 | 133 isr_handler CODE 0x00084 |
134 ;============================================================================= | |
135 | |
640 | 136 isr_adjust_speed_exit: |
137 movwf T2CON ; adjust PWM1 for LED dimming | |
138 btfss OSCCON,HFIOFS ; PLL stabilized? | |
139 bra isr_adjust_speed_exit ; NO - loop to give it some more time | |
140 return ; YES - done | |
141 | |
634 | 142 ;----------------------------------------------------------------------------- |
143 ; Handle digitally-attached external Sensors | |
144 ; | |
145 ; take a byte received on IR/S8 link and slot it into the RX buffer | |
623 | 146 ; |
147 IFDEF _external_sensor | |
148 | |
149 isr_uart2: | |
634 | 150 bcf PIR3,RC2IF ; clear UART 2 interrupt flag |
623 | 151 banksel RCREG2 ; RC*2 is outside access RAM |
152 movff RCREG2,isr_lo ; copy received byte to isr_lo | |
153 bcf RCSTA2,CREN ; clear receiver status | |
154 bsf RCSTA2,CREN ; ... | |
155 banksel isr_backup ; back to default ISR bank | |
156 movlw .18 ; size of the buffer | |
157 cpfslt ir_s8_counter ; number of received bytes < buffer size? | |
158 bra isr_uart2_1 ; NO - buffer full, do not store the byte | |
159 movf ir_s8_counter,W ; YES - copy number of received bytes to WREG | |
160 MOVII FSR0L,FSR0_backup ; - back-up FSR0 | |
161 lfsr FSR0,ir_s8_buffer ; - load base address of buffer | |
162 movff isr_lo,PLUSW0 ; - store received byte | |
163 MOVII FSR0_backup,FSR0L ; - restore FSR0 | |
164 incf ir_s8_counter,F ; - increment number of received bytes by 1 | |
165 isr_uart2_1: | |
634 | 166 movlw .253 ; reload timer 3, high byte |
623 | 167 movwf TMR3H ; ... |
634 | 168 clrf TMR3L ; reload timer 3, low byte |
169 bsf T3CON,TMR3ON ; restart timer | |
170 return ; done | |
623 | 171 |
172 | |
634 | 173 ;----------------------------------------------------------------------------- |
174 ; Timeout on IR/S8 Link: check the Checksum and gather the received Data | |
623 | 175 ; |
176 isr_timer3: | |
604 | 177 bcf T3CON,TMR3ON ; stop timer 3 |
634 | 178 movlw .15 ; a IR telegram has 15 bytes |
604 | 179 cpfseq ir_s8_counter ; got exactly 15 bytes? |
623 | 180 bra isr_timer3_1 ; NO - test for 16 bytes |
604 | 181 bra isr_timer3_ir ; YES - got 15 bytes, compute local checksum |
0 | 182 isr_timer3_1: |
634 | 183 movlw .16 ; a IR telegram may also have 16 bytes, with last byte 0x00 |
604 | 184 cpfseq ir_s8_counter ; got exactly 16 bytes? |
623 | 185 bra isr_timer3_2 ; NO - test for 17 bytes |
604 | 186 tstfsz ir_s8_buffer+.15 ; YES - last byte = 0x00 ? |
634 | 187 bra isr_timer3_exit ; NO - exit |
604 | 188 bra isr_timer3_ir ; YES - got 16 bytes, compute local checksum |
113 | 189 isr_timer3_2: |
634 | 190 movlw .17 ; a S8 telegram has 17 bytes |
604 | 191 cpfseq ir_s8_counter ; got exactly 17 bytes? |
192 bra isr_timer3_exit ; NO - exit | |
193 bra isr_timer3_s8 ; YES - S8 data | |
0 | 194 |
634 | 195 ; process telegram received on IR link |
623 | 196 isr_timer3_ir: |
634 | 197 movlw .12 ; compute checksum over 1st and next 12 bytes |
623 | 198 rcall compute_IR_S8_checksum ; compute checksum |
634 | 199 tstfsz ir_s8_counter ; checksum ok? |
200 bra isr_timer3_exit ; NO - discard data | |
0 | 201 |
634 | 202 ; copy received data to respective variables |
623 | 203 movff ir_s8_buffer+.1, hud_status_byte |
204 movff ir_s8_buffer+.2, sensor1_mv+0 | |
205 movff ir_s8_buffer+.3, sensor1_mv+1 | |
206 movff ir_s8_buffer+.4, sensor2_mv+0 | |
207 movff ir_s8_buffer+.5, sensor2_mv+1 | |
208 movff ir_s8_buffer+.6, sensor3_mv+0 | |
209 movff ir_s8_buffer+.7, sensor3_mv+1 | |
210 movff ir_s8_buffer+.8, sensor1_ppO2 | |
211 movff ir_s8_buffer+.9, sensor2_ppO2 | |
212 movff ir_s8_buffer+.10,sensor3_ppO2 | |
582 | 213 movff ir_s8_buffer+.11,hud_battery_mv+0 |
214 movff ir_s8_buffer+.12,hud_battery_mv+1 | |
0 | 215 |
623 | 216 bsf hud_connection_ok ; set manually for hwHUD w/o the HUD module |
217 bra isr_timer3_reload ; reload timer and exit | |
218 | |
634 | 219 ; process telegram received on S8 link |
623 | 220 isr_timer3_s8: |
634 | 221 movlw .14 ; compute checksum over 1st and next 14 bytes |
623 | 222 rcall compute_IR_S8_checksum ; compute checksum |
634 | 223 tstfsz ir_s8_counter ; checksum ok? |
224 bra isr_timer3_exit ; NO - discard data | |
623 | 225 |
634 | 226 ; copy received data to respective variables |
227 movff ir_s8_buffer+.3, hud_status_byte ; also sets hud_connection_ok flag | |
623 | 228 movff ir_s8_buffer+.13,hud_battery_mv+0 |
229 movff ir_s8_buffer+.14,hud_battery_mv+1 | |
227
03946aa48fa5
NEW: Support for hwHUD without the LED module
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diff
changeset
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230 |
634 | 231 ; btfsc trigger_S8_data_update ; last data already processed? |
232 ; bra isr_timer3_exit ; NO - skip copying new data (and not reload the timeout) | |
623 | 233 bsf trigger_S8_data_update ; YES - set flag for new data available |
582 | 234 |
634 | 235 ; copy more received data to respective variables |
623 | 236 movff ir_s8_buffer+.4, s8_rawdata_sensor1+0 |
237 movff ir_s8_buffer+.5, s8_rawdata_sensor1+1 | |
238 movff ir_s8_buffer+.6, s8_rawdata_sensor1+2 | |
239 movff ir_s8_buffer+.7, s8_rawdata_sensor2+0 | |
240 movff ir_s8_buffer+.8, s8_rawdata_sensor2+1 | |
241 movff ir_s8_buffer+.9, s8_rawdata_sensor2+2 | |
242 movff ir_s8_buffer+.10,s8_rawdata_sensor3+0 | |
243 movff ir_s8_buffer+.11,s8_rawdata_sensor3+1 | |
244 movff ir_s8_buffer+.12,s8_rawdata_sensor3+2 | |
245 | |
246 isr_timer3_reload: | |
634 | 247 movlw ir_timeout_value ; get timeout value (in multiples of 62.5 ms) |
248 movwf ir_s8_timeout ; reload timeout counter | |
0 | 249 isr_timer3_exit: |
634 | 250 clrf ir_s8_counter ; clear number of received bytes |
251 bcf PIR2,TMR3IF ; clear IRQ flag | |
252 return ; done | |
0 | 253 |
254 | |
634 | 255 ;----------------------------------------------------------------------------- |
256 ; Helper Function - Compute Checksum on Data in RX Buffer | |
623 | 257 ; |
258 compute_IR_S8_checksum: | |
259 movwf ir_s8_counter ; initialize loop counter from WREG | |
634 | 260 MOVII FSR0L,FSR0_backup ; back-up FSR0 |
261 lfsr FSR0,ir_s8_buffer ; load base address of the receive buffer | |
262 movff POSTINC0,isr_mpr+0 ; initialize low byte of the calculated checksum with first byte in buffer | |
263 clrf isr_mpr+1 ; clear the high byte of the calculated checksum | |
623 | 264 compute_IR_S8_checksum_loop: |
634 | 265 movf POSTINC0,W ; read next byte |
623 | 266 addwf isr_mpr+0,F ; add it to the to checksum, low byte |
267 movlw .0 ; no explicit data to add to the high byte... | |
268 addwfc isr_mpr+1,F ; ... besides the carry | |
634 | 269 decfsz ir_s8_counter,F ; decrement number of bytes yet to do, all done? |
623 | 270 bra compute_IR_S8_checksum_loop ; NO - loop |
634 | 271 movf POSTINC0,W ; YES - read low byte of the received checksum |
272 cpfseq isr_mpr+0 ; - equal to low byte of the calculated checksum? | |
273 incf ir_s8_counter,F ; NO - mark a checksum error | |
274 movf POSTINC0,W ; - read high byte of the received checksum | |
275 cpfseq isr_mpr+1 ; - equal to high byte of the calculated checksum? | |
276 incf ir_s8_counter,F ; NO - mark a checksum error | |
277 MOVII FSR0_backup,FSR0L ; - restore FSR0 | |
278 return ; - done | |
113 | 279 |
623 | 280 ENDIF ; _external_sensor |
113 | 281 |
640 | 282 |
283 ;----------------------------------------------------------------------------- | |
284 ; Timer 4 - Button debounce (For new digital piezo circuit) | |
285 | |
286 timer4int: | |
287 bcf PIR5,TMR4IF | |
288 decfsz debounce_counter,F | |
289 return | |
290 bcf T4CON,TMR4ON ; Stop timer 4 | |
291 clrf TMR4 ; reset | |
292 | |
293 movff opt_cR_button_right,WREG ; 20-100; mH: opt_cR_button_right will also affect left button | |
294 bcf STATUS,C ; clear carry bit | |
295 rrcf WREG ; /2 -> 10-50 | |
296 bcf STATUS,C ; clear carry bit | |
297 rrcf WREG ; /2 -> 5-25 | |
298 decf WREG,W ; -1 | |
299 decf WREG,W ; -1 | |
300 decf WREG,W ; -1 -> 2-22 | |
301 | |
302 ; movlw .5 ; initial delay | |
303 movwf debounce_counter ; multiples of 16ms | |
304 return | |
305 | |
306 timer4_restart: | |
307 movlw .5 ; extra delay | |
308 movwf debounce_counter | |
309 clrf TMR4 ; reset | |
310 bcf INTCON3,INT1IF ; clear ext. int 1 request | |
311 bcf INTCON,INT0IF ; clear ext. int 0 request | |
312 bsf INTCON,INT0IE ; enable INT0 IRQ | |
313 bsf INTCON3,INT1IE ; enable INT1 IRQ | |
314 return | |
0 | 315 |
634 | 316 ;----------------------------------------------------------------------------- |
317 ; Tasks every 62.5 ms: Buttons, Dimming, Pressure/Temperature Sensor and CPU Speed | |
623 | 318 ; |
319 isr_tmr7: | |
634 | 320 bcf PIE5,TMR7IE ; disable IRQs by TMR7 |
0 | 321 |
634 | 322 banksel 0xF16 ; TMR7H/L are not part of the access RAM |
323 movlw .248 ; reload timer 7, high byte (8x256 ticks -> 62.5 ms) | |
324 movwf TMR7H ; ... (keep low byte running ) | |
325 | |
640 | 326 btfss update_surface_pressure ; shall update the surface pressure? |
327 bra isr_tmr7_1 ; NO - skip | |
328 bcf update_surface_pressure ; YES - clear request flag | |
329 MOVII pressure_abs_ref,pressure_surf ; - update surface pressure | |
636 | 330 |
640 | 331 isr_tmr7_1: |
634 | 332 call get_analog_switches ; get analog readings - bank-safe, but CAUTION: returns in bank common |
333 banksel isr_backup ; back to ISR default bank | |
623 | 334 |
634 | 335 btfss INTCON3,INT1IE ; external IRQ 1 enabled? |
640 | 336 bra isr_tmr7_2 ; NO - skip next |
634 | 337 btfsc analog_sw2_pressed ; YES - analog switch 2 pressed? |
338 rcall isr_switch_left ; NO - get digital readings of left switch | |
640 | 339 |
340 isr_tmr7_2: | |
634 | 341 btfss INTCON,INT0IE ; external IRQ 0 enabled? |
640 | 342 bra isr_tmr7_3 ; NO - skip next |
634 | 343 btfsc analog_sw1_pressed ; YES - analog switch 1 pressed? |
344 rcall isr_switch_right ; NO - get digital readings of right switch | |
640 | 345 |
346 isr_tmr7_3: | |
347 btfsc block_sensor_interrupt ; sensor interrupts disabled? | |
634 | 348 bra sensor_int_state_exit ; YES - goto exit |
640 | 349 ;bra isr_tmr7_4 ; NO - continue |
350 | |
351 isr_tmr7_4: | |
623 | 352 movf max_CCPR1L,W ; dim value |
582 | 353 cpfseq CCPR1L ; = current PWM value? |
623 | 354 rcall isr_dimm_tft ; NO - adjust until max_CCPR1L = CCPR1L |
0 | 355 |
623 | 356 IFDEF _external_sensor |
640 | 357 |
634 | 358 decfsz ir_s8_timeout,F ; decrement IR/S8 timeout counter, became zero? |
640 | 359 bra isr_sensor_state2 ; NO - continue with sensor |
634 | 360 movlw ir_timeout_value ; YES - get timeout value (in multiples of 62.5 ms) |
361 movwf ir_s8_timeout ; - reload timeout timer | |
362 btfsc ext_input_optical ; - optical input in use? | |
640 | 363 bra isr_tmr7_5 ; YES - clear data |
634 | 364 TSTOSS opt_s8_mode ; NO - S8 input in use? |
640 | 365 bra isr_sensor_state2 ; NO - must be analog interface in use, keep data |
366 ;bra isr_tmr7_5 ; YES - clear data | |
634 | 367 |
640 | 368 isr_tmr7_5: |
623 | 369 clrf hud_status_byte ; S8/IR timeout clears all analog input readings to zero -> fallback will be triggered when in sensor mode |
370 CLRI hud_battery_mv ; clear battery voltage | |
582 | 371 |
623 | 372 banksel sensor1_mv ; select bank where sensor data are stored |
373 CLRI sensor1_mv ; clear all sensor data | |
374 CLRI sensor2_mv ; ... | |
375 CLRI sensor3_mv ; ... | |
376 clrf sensor1_ppO2 ; ... | |
377 clrf sensor2_ppO2 ; ... | |
378 clrf sensor3_ppO2 ; ... | |
628 | 379 banksel s8_rawdata_sensor1 |
380 CLRI s8_rawdata_sensor1 ; clear all sensor data (raw data) | |
381 clrf s8_rawdata_sensor1+2 | |
382 CLRI s8_rawdata_sensor2 ; clear all sensor data (raw data) | |
383 clrf s8_rawdata_sensor2+2 | |
384 CLRI s8_rawdata_sensor3 ; clear all sensor data (raw data) | |
385 clrf s8_rawdata_sensor3+2 | |
623 | 386 banksel isr_backup ; back to ISR default bank |
387 | |
388 bsf trigger_S8_data_update ; signal a data update | |
582 | 389 |
640 | 390 ENDIF ; _external_sensor |
0 | 391 |
640 | 392 isr_sensor_state2: |
623 | 393 btfss sensor_state_counter,0 ; every 1/4 second |
394 bsf trigger_quarter_second ; set flag | |
395 | |
396 btfss speed_is_normal ; CPU running on normal speed? | |
397 rcall isr_set_speed_to_normal ; NO - set CPU speed to normal | |
582 | 398 |
623 | 399 incf sensor_state_counter,F ; counts to eight for state machine |
0 | 400 |
623 | 401 ; State 1: clear flags and average registers, get temperature (51 us) and start pressure integration (73.5 us) |
402 ; State 2: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
403 ; State 3: get temperature (51 us) and start pressure integration (73.5 us) | |
404 ; State 4: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
405 ; State 5: get temperature (51 us) and start pressure integration (73.5 us) | |
406 ; State 6: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
407 ; State 7: get temperature (51 us) and start pressure integration (73.5 us) | |
408 ; State 8: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) and build average for half-second update of temperature and pressure | |
582 | 409 |
623 | 410 movff sensor_state_counter,WREG ; WREG used as temp here... |
582 | 411 dcfsnz WREG,F |
623 | 412 bra sensor_int_state1_plus_restart ; do state 1 |
582 | 413 dcfsnz WREG,F |
623 | 414 bra sensor_int_state2 ; do state 2 |
582 | 415 dcfsnz WREG,F |
623 | 416 bra sensor_int_state1 ; do state 3 |
582 | 417 dcfsnz WREG,F |
623 | 418 bra sensor_int_state2 ; do state 4 |
582 | 419 dcfsnz WREG,F |
623 | 420 bra sensor_int_state1 ; do state 5 |
582 | 421 dcfsnz WREG,F |
623 | 422 bra sensor_int_state2 ; do state 6 |
582 | 423 dcfsnz WREG,F |
623 | 424 bra sensor_int_state1 ; do state 7 |
425 | |
426 ; first, do state 2: | |
427 call get_pressure_value ; state 2: get pressure (51 us) | |
428 call get_temperature_start ; and start temperature integration (73.5 us) | |
429 call calculate_compensation ; calculate temperature compensated pressure (27 us) | |
0 | 430 |
634 | 431 ; build average for pressure |
623 | 432 bcf STATUS,C ; clear carry bit |
433 rrcf pressure_abs_avg+1 ; divide by 2 | |
634 | 434 rrcf pressure_abs_avg+0 ; ... |
623 | 435 bcf STATUS,C ; clear carry bit |
436 rrcf pressure_abs_avg+1 ; divide by 2, again | |
634 | 437 rrcf pressure_abs_avg+0 ; ... |
623 | 438 |
634 | 439 ; export averaged pressure |
440 MOVII pressure_abs_avg,pressure_abs ; export result | |
0 | 441 |
634 | 442 ; build average for temperature |
623 | 443 bcf STATUS,C ; clear carry bit by default |
444 btfsc temperature_avg+1,7 ; sign bit set? | |
445 bsf STATUS,C ; YES - copy sign bit to carry bit | |
446 rrcf temperature_avg+1 ; divide signed temperature by 2 | |
447 rrcf temperature_avg+0 ; ... | |
448 bcf STATUS,C ; clear carry bit by default | |
449 btfsc temperature_avg+1,7 ; sign bit set? | |
450 bsf STATUS,C ; YES - copy sign bit to carry bit | |
451 rrcf temperature_avg+1 ; divide signed temperature by 2 again (by 4 in total now) | |
452 rrcf temperature_avg+0 ; ... | |
453 MOVII temperature_avg,temperature_cur ; store final result | |
0 | 454 |
634 | 455 ; check for temperature change |
623 | 456 movf temperature_cur+0,W ; get current temperature, low byte |
457 cpfseq temperature_last+0 ; compare with last temperature, equal? | |
458 bra isr_sensor_state2_2 ; NO - temperature has changed | |
459 movf temperature_cur+1,W ; get current temperature, high byte | |
460 cpfseq temperature_last+1 ; compare with last temperature, equal? | |
461 bra isr_sensor_state2_2 ; NO - temperature has changed | |
462 bra isr_sensor_state2_3 ; YES to both - no change | |
0 | 463 |
464 isr_sensor_state2_2: | |
623 | 465 MOVII temperature_cur,temperature_last ; store current temperature as last temperature for next round |
466 bsf trigger_temp_changed ; set flag for temperature change | |
467 | |
0 | 468 isr_sensor_state2_3: |
629 | 469 ; reset state counter |
623 | 470 clrf sensor_state_counter ; reset state counter |
471 btfss reset_max_pressure ; shall clear the max pressure? | |
472 bra isr_sensor_state2_3a ; NO - continue with checking for pressure change | |
473 bcf reset_max_pressure ; YES - clear request flag | |
474 CLRI pressure_rel_max ; - clear max. pressure | |
0 | 475 |
623 | 476 isr_sensor_state2_3a: |
477 ; check for pressure change | |
478 movf pressure_abs+0,W ; get current pressure, low byte | |
479 cpfseq pressure_abs_last+0 ; compare with last pressure, equal? | |
480 bra isr_sensor_state2_4 ; NO - pressure has changed | |
481 movf pressure_abs+1,W ; YES - get current pressure, high byte | |
482 cpfseq pressure_abs_last+1 ; - compare with last pressure, equal? | |
483 bra isr_sensor_state2_4 ; NO - pressure has changed | |
484 bra isr_sensor_state2_5 ; YES - no change | |
485 | |
486 isr_sensor_state2_4: | |
487 MOVII pressure_abs,pressure_abs_last ; store current pressure as last pressure for next round | |
488 bsf trigger_pres_cur_changed ; signal a pressure change | |
489 | |
490 isr_sensor_state2_5: | |
491 ; compute relative pressure | |
492 movf pressure_surf+0,W ; get surface pressure, low byte | |
493 subwf pressure_abs+0,W ; WREG = pressure_abs - pressure_surf (low byte) | |
494 movwf pressure_rel_cur+0 ; store relative pressure, low byte | |
495 movf pressure_surf+1,W ; get surface pressure, high byte | |
496 subwfb pressure_abs+1,W ; WREG = pressure_abs - pressure_surf (high byte) | |
497 movwf pressure_rel_cur+1 ; store relative pressure, high byte | |
498 btfss STATUS,N ; relative pressure < 0 ? | |
499 bra isr_sensor_state2_6 ; NO - OK, keep result | |
500 CLRI pressure_rel_cur ; YES - set relative pressure to zero | |
0 | 501 |
623 | 502 isr_sensor_state2_6: |
503 ; check for new max relative pressure | |
504 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
505 subwf pressure_rel_max+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
506 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
507 subwfb pressure_rel_max+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
508 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
509 bra isr_sensor_state2_6a ; NO | |
510 MOVII pressure_rel_cur,pressure_rel_max ; YES - set new max rel pressure | |
511 bsf trigger_pres_max_changed ; - signal a pressure max change | |
512 | |
513 isr_sensor_state2_6a: | |
0 | 514 |
623 | 515 IFDEF _min_depth_option |
516 ; check if min/max pressures shall be reset | |
517 btfss reset_trip_pressure ; shall reset the resettable min/max pressures? | |
518 bra isr_sensor_state2_6b ; NO | |
519 bcf reset_trip_pressure ; YES - clear request flag | |
520 CLRI pressure_rel_max_trip ; - set max pressure to zero | |
521 SETI pressure_rel_min_trip ; - set min pressure to biggest value possible | |
522 isr_sensor_state2_6b: | |
523 ; check for new resettable max relative pressure | |
524 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
525 subwf pressure_rel_max_trip+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
526 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
527 subwfb pressure_rel_max_trip+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
528 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
529 bra isr_sensor_state2_6c ; NO - continue checking for min depth | |
530 MOVII pressure_rel_cur,pressure_rel_max_trip ; YES - set new max rel pressure | |
531 isr_sensor_state2_6c: | |
532 ; check for new resettable min relative pressure | |
533 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
534 subwf pressure_rel_min_trip+0,W ; WREG = pressure_rel_min - pressure_rel_cur (low byte) | |
535 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
536 subwfb pressure_rel_min_trip+1,W ; WREG = pressure_rel_min - pressure_rel_cur (high byte) | |
537 btfss STATUS,C ; result > 0, i.e. new min rel pressure? | |
538 bra sensor_int_state_exit ; NO - done | |
539 MOVII pressure_rel_cur,pressure_rel_min_trip ; YES - set new min rel pressure | |
540 ENDIF ; _min_depth_option | |
541 bra sensor_int_state_exit ; done | |
0 | 542 |
543 sensor_int_state1_plus_restart: | |
634 | 544 CLRI pressure_abs_avg ; clear average register for pressure |
545 CLRI temperature_avg ; clear average register for temperature | |
0 | 546 |
547 sensor_int_state1: | |
604 | 548 call get_temperature_value ; state 1: get temperature... |
549 call get_pressure_start ; ...and start pressure integration | |
582 | 550 bra sensor_int_state_exit |
0 | 551 |
552 sensor_int_state2: | |
604 | 553 call get_pressure_value ; state 2: get pressure (51 us)... |
554 call get_temperature_start ; ...and start temperature integration (73.5 us) | |
555 call calculate_compensation ; .. and calculate temperature compensated pressure (233 us) | |
582 | 556 |
0 | 557 sensor_int_state_exit: |
634 | 558 bcf PIR5,TMR7IF ; clear IRQ flag |
559 bsf PIE5,TMR7IE ; re-enable IRQs by TMR7 | |
623 | 560 bra isr_adjust_speed ; set/restore CPU speed and return |
561 | |
562 | |
634 | 563 ;----------------------------------------------------------------------------- |
564 ; Helper Function for Display Dimming | |
565 ; | |
623 | 566 isr_dimm_tft: ; adjust until max_CCPR1L = CCPR1L |
628 | 567 btfsc screen_type3 ; screen type 3 ? |
568 return ; YES - ignore, no dimming function with screen type 3 | |
623 | 569 btfsc tft_is_dimming ; is the display dimming? |
570 return ; YES - ignore | |
571 movf max_CCPR1L,W ; NO - proceed | |
628 | 572 cpfsgt CCPR1L ; - CCPR1L > max_CCPR1L ? |
573 bra isr_dimm_tft2 ; NO - dim up | |
574 decf CCPR1L,F ; YES - dim down | |
575 return ; - done | |
623 | 576 isr_dimm_tft2: |
628 | 577 movf max_CCPR1L,W ; |
578 sublw ambient_light_min_eco ; | |
623 | 579 cpfsgt CCPR1L ; CCPR1L > max_CCPR1L - ambient_light_min_eco ? |
580 bra isr_dimm_tft3 ; NO - dim up slow | |
628 | 581 movlw .10 ; YES - dim up faster (+10) |
582 addwf CCPR1L,F ; - add to dimming value | |
623 | 583 isr_dimm_tft3: |
628 | 584 incf CCPR1L,F ; - dim up (+1) |
585 return ; - done | |
623 | 586 |
582 | 587 |
634 | 588 ;----------------------------------------------------------------------------- |
589 ; RTC Interrupt (invoked every 0.5 Seconds) | |
623 | 590 ; |
591 isr_rtcc: | |
592 bcf PIR3,RTCCIF ; clear flag | |
593 bsf trigger_half_second ; set flag for a new 1/2 second has begun | |
594 btfsc reset_timebase ; shall reset the timebase? | |
595 bra isr_rtcc_1 ; YES - warp to new full second | |
596 btg timebase_0sec ; NO - toggle the 1/2 second timebase | |
597 btfsc timebase_0sec ; - did it toggled 1 -> 0 ? | |
598 return ; NO - on half second, done | |
0 | 599 |
623 | 600 isr_rtcc_1: |
601 ; new full second | |
602 bsf trigger_full_second ; set flag for a new 1/1 second has begun | |
603 | |
604 btfsc block_rtc_access ; ISR suspended from accessing the RTC? | |
605 bra isr_rtcc_2 ; YES | |
606 | |
607 banksel RTCCFG ; RTC registers are outside access RAM | |
582 | 608 bsf RTCCFG,RTCPTR1 |
623 | 609 bsf RTCCFG,RTCPTR0 |
610 banksel isr_backup ; back to ISR default bank | |
611 | |
612 movff RTCVALL,rtc_year ; read year in BCD | |
613 movff RTCVALH,rtc_day ; dummy read | |
614 movff RTCVALL,rtc_day ; read day in BCD | |
615 movff RTCVALH,rtc_month ; read month in BCD | |
616 movff RTCVALL,rtc_hour ; read hour in BCD | |
617 movff RTCVALH,rtc_secs ; dummy read | |
618 movff RTCVALL,rtc_secs ; read seconds in BCD | |
619 movff RTCVALH,rtc_mins ; read minutes in BCD | |
582 | 620 |
634 | 621 ; convert BCD to DEC and set registers |
623 | 622 movf rtc_mins,W |
623 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
624 movwf rtc_mins | |
625 movf rtc_secs,W | |
626 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
627 movwf rtc_secs | |
628 movf rtc_hour,W | |
629 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
630 movwf rtc_hour | |
631 movf rtc_month,W | |
632 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
633 movwf rtc_month | |
634 movf rtc_day,W | |
635 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
636 movwf rtc_day | |
637 movf rtc_year,W | |
638 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
639 movwf rtc_year | |
640 | |
641 isr_rtcc_2: | |
629 | 642 ; every full second - get ambient light level and set max_CCPR1L |
623 | 643 call get_ambient_level ; get ambient light level and set max_CCPR1L |
644 banksel isr_backup ; back to ISR default bank (for safety only) | |
645 | |
646 rcall isr_battery_gauge ; calculate the current charge consumption and add it to the battery gauge | |
647 rcall isr_update_uptime ; increment overall OSTC uptime | |
648 rcall isr_update_timeout ; process the timeout timer | |
649 | |
650 btfsc divemode ; in dive mode? | |
651 rcall isr_divemode_1sec ; YES - do the every second dive mode tasks | |
652 | |
629 | 653 ; increment surface interval counted in seconds |
623 | 654 btfsc divemode ; in dive mode? |
655 btfsc simulatormode ; YES - in simulator mode? | |
629 | 656 rcall inc_surface_interval_secs ; NO - YES - increment the surface interval (seconds timer) |
657 | |
658 ; reset the surface interval timers if requested | |
659 btfsc reset_surface_interval ; shall reset both surface interval timers? | |
634 | 660 rcall rst_surface_interval ; YES |
0 | 661 |
623 | 662 ; reset the timebase if requested |
663 btfss reset_timebase ; shall reset the timebase? | |
664 bra isr_rtcc_3 ; NO | |
665 bcf reset_timebase ; YES - clear request flag | |
666 clrf eventbase ; - clear all pending events | |
667 clrf timebase ; - clear all timebase flags | |
668 clrf timebase_secs ; - clear seconds timer | |
669 clrf timebase_mins ; - clear minutes timer | |
670 clrf simulator_time ; - clear minutes timer of simulator runtime as well | |
671 bsf trigger_half_second ; - set flag for a new 1/2 second has begun | |
672 bsf trigger_full_second ; - set flag for a new 1/1 second has begun | |
673 return ; - done | |
674 | |
675 isr_rtcc_3: | |
676 ; count-up the 2 seconds timebase timer | |
677 btg timebase_1sec ; toggle the 1 second timer bit | |
678 btfss timebase_1sec ; did it toggled 1 -> 0 ? | |
679 btg timebase_2sec ; YES - toggle the 2 seconds timer bit | |
680 | |
681 ; count-up the seconds timer | |
682 incf timebase_secs,F ; increment seconds timer (may temporary become 60 here) | |
683 movlw .59 ; max. for seconds timer | |
684 cpfsgt timebase_secs ; seconds timer > max.? | |
685 return ; NO - done | |
0 | 686 |
623 | 687 ; new full minute |
629 | 688 clrf timebase_secs ; reset timer |
689 bsf trigger_full_minute ; set flag for a new minute has begun | |
623 | 690 |
629 | 691 ; increment surface interval counted in minutes |
692 btfsc divemode ; in dive mode? | |
693 btfsc simulatormode ; YES - in simulator mode? | |
694 rcall inc_surface_interval_mins ; NO - YES - increment surface interval (minutes timer) | |
623 | 695 |
629 | 696 btfss simulatormode ; in simulator mode? |
697 bra isr_rtcc_4 ; NO | |
698 infsnz simulator_time,F ; YES - increment real runtime of the simulator, did wrap around (became zero)? | |
699 setf simulator_time ; YES - disallow wrap-around, keep at 255 instead | |
0 | 700 |
623 | 701 isr_rtcc_4: |
629 | 702 incf timebase_mins,F ; increment minutes timer |
703 movlw .59 ; max. for minutes timer | |
704 cpfsgt timebase_mins ; minutes timer > max.? | |
705 return ; NO - done | |
623 | 706 |
707 ; new full hour | |
629 | 708 clrf timebase_mins ; YES - reset timer |
709 bsf trigger_full_hour ; - set flag for a new hour has begun | |
710 return ; - done | |
623 | 711 |
712 ; increment overall OSTC uptime | |
713 isr_update_uptime: | |
634 | 714 incf uptime+0,F ; uptime++ |
715 clrf WREG ; ... | |
716 addwfc uptime+1,F ; ... | |
717 addwfc uptime+2,F ; ... | |
718 addwfc uptime+3,F ; ... | |
719 return ; done | |
582 | 720 |
623 | 721 ; process the timeout timer |
722 isr_update_timeout: | |
634 | 723 btfsc restart_timeout ; shall restart the timeout? |
623 | 724 bra isr_update_timeout_1 ; YES |
725 tstfsz isr_timeout_timer ; NO - timeout timer already at zero? | |
634 | 726 decfsz isr_timeout_timer,F ; NO - decrement timer, reached zero now? |
623 | 727 return ; YES / NO - nothing further to do |
728 bsf trigger_timeout ; YES - set timeout flag | |
729 return ; - done | |
730 isr_update_timeout_1: | |
634 | 731 bcf restart_timeout ; clear request flag |
623 | 732 bcf trigger_timeout ; clear pending timeout trigger, if any |
733 movff isr_timeout_reload,isr_timeout_timer ; reload timer | |
734 return ; done | |
0 | 735 |
634 | 736 |
737 ;----------------------------------------------------------------------------- | |
738 ; Calculate Charge drawn from the Battery | |
623 | 739 ; |
740 isr_battery_gauge: | |
741 btfsc block_battery_gauge ; access to battery gauge suspended? | |
742 return ; YES - done | |
743 MOVLI current_sleepmode,isr_mpr ; NO - default to sleep mode with 100µA/3600 -> nAs | |
744 btfss sleepmode ; - in sleep mode? | |
634 | 745 rcall isr_battery_gauge2 ; NO - compute current consumption into isr_lo and isr_hi |
746 movf isr_mpr+0,W ; - 48 bit add of isr_mpr:2 to battery_gauge:6 | |
747 addwf battery_gauge+0,F ; - ... | |
748 movf isr_mpr+1,W ; - ... | |
749 addwfc battery_gauge+1,F ; - ... | |
750 clrf WREG ; - ... | |
751 addwfc battery_gauge+2,F ; - ... | |
752 addwfc battery_gauge+3,F ; - ... | |
753 addwfc battery_gauge+4,F ; - ... | |
754 addwfc battery_gauge+5,F ; - ... | |
755 return ; - done | |
582 | 756 |
634 | 757 |
758 ;----------------------------------------------------------------------------- | |
759 ; Helper Function - compute current Consumption | |
760 ; | |
0 | 761 isr_battery_gauge2: |
634 | 762 ; Set consumption rate in nAs (nano Ampere x seconds) |
0 | 763 ; Example: |
623 | 764 ; MOVLI .55556,isr_mpr ; 0.2 Ah / 3600 seconds per hour * 1e9s = nAs |
765 ; | |
766 ; Remark: although all the constants are named current_xxxx, in reality they mean charge! | |
0 | 767 |
623 | 768 ; Calculate current consumption for LED backlight: 47*CCPR1L+272 (according to values in hwos.inc: 115*CCPR1L+216) |
631 | 769 movlw .70 ; screen type 3 has a fix backlight current slope |
770 btfss screen_type3 ; does the OSTC have a screen type 3 ? | |
771 movf CCPR1L,W ; NO - for screen types 0, 1 and 2 get the slope from CCPR1L | |
772 mullw current_backlight_multi ; multiply with backlight factor current_backlight_multi | |
773 ADDLI current_backlight_offset,PRODL ; add backlight offset current_backlight_offset | |
623 | 774 MOVII PRODL,isr_mpr ; copy result to isr_mpr |
0 | 775 |
634 | 776 ; add current for CPU and GPU |
623 | 777 ; cpu_speed_state = ECO 3.10 mA -> 861 nAs |
778 ; = NORMAL 5.50 mA -> 1528 nAs | |
779 ; = FASTEST 8.04 mA -> 2233 nAs | |
780 btfss speed_is_eco ; speed = eco ? | |
781 bra isr_battery_gauge3 ; NO | |
782 ADDLI current_speed_eco,isr_mpr ; YES - add current_speed_eco to isr_mpr | |
582 | 783 bra isr_battery_gauge5 |
0 | 784 isr_battery_gauge3: |
623 | 785 btfss speed_is_normal ; speed = normal? |
786 bra isr_battery_gauge4 ; NO | |
787 ADDLI current_speed_normal,isr_mpr ; YES - add current_speed_normal to isr_mpr | |
582 | 788 bra isr_battery_gauge5 |
0 | 789 isr_battery_gauge4: |
623 | 790 ADDLI current_speed_fastest,isr_mpr ; speed is fastest, add current_speed_fastest to isr_mpr |
0 | 791 isr_battery_gauge5: |
623 | 792 btfss ir_power ; IR enabled? |
793 bra isr_battery_gauge6 ; NO | |
794 ADDLI current_ir_receiver,isr_mpr ; YES - add current_ir_receiver to isr_mpr | |
0 | 795 isr_battery_gauge6: |
623 | 796 btfss compass_enabled ; compass active? |
797 bra isr_battery_gauge7 ; NO | |
798 ADDLI current_compass,isr_mpr ; YES - add current_compass to isr_mpr | |
0 | 799 isr_battery_gauge7: |
634 | 800 return ; done |
0 | 801 |
623 | 802 |
634 | 803 ;----------------------------------------------------------------------------- |
804 ; Every Second Tasks while in Dive Mode | |
623 | 805 ; |
0 | 806 isr_divemode_1sec: |
623 | 807 decfsz sampling_timer,F ; decrement sampling timer, became zero? |
808 bra isr_divemode_1sec_1 ; NO | |
809 bsf trigger_sample_divedata ; YES - set trigger flag for sampling dive data | |
810 movff sampling_rate,sampling_timer; - reload timer | |
0 | 811 |
623 | 812 isr_divemode_1sec_1: |
813 btfss reset_timebase ; shall reset the timebase? (request flag will be cleared later) | |
814 bra isr_divemode_1sec_2 ; NO | |
815 CLRI total_divetime_secs ; YES - reset total dive time, seconds (2 byte) | |
816 clrf counted_divetime_secs ; - reset counted dive time, seconds (1 byte) | |
817 CLRI counted_divetime_mins ; - reset counted dive time, minutes (2 byte) | |
818 clrf apnoe_dive_secs ; - reset apnoe dive time, seconds (1 byte) | |
819 clrf apnoe_dive_mins ; - reset apnoe dive time, minutes (1 byte) | |
820 bcf apnoe_at_surface ; - apnoe mode starts in submerged state | |
821 return ; - done | |
582 | 822 |
623 | 823 isr_divemode_1sec_2: |
824 INCI total_divetime_secs ; increase total dive time (regardless of start_dive_threshold) | |
825 btfss count_divetime ; shall the dive time be counted (regarding start_dive_threshold)? | |
629 | 826 bra isr_divemode_1sec_4 ; NO - too shallow / apnoe at surface |
623 | 827 incf counted_divetime_secs,F ; YES - increase dive time (displayed dive time) |
828 movlw d'59' ; - 60 seconds make a minute | |
829 cpfsgt counted_divetime_secs ; - next full minute reached? | |
629 | 830 bra isr_divemode_1sec_3 ; NO - continue |
623 | 831 clrf counted_divetime_secs ; YES - reset seconds to 0 |
832 INCI counted_divetime_mins ; - increase dive minutes | |
833 bsf divetime_longer_1min ; - set flag for dive time exceeding 1 minute | |
629 | 834 ;bra isr_divemode_1sec_3 ; - continue |
0 | 835 |
623 | 836 isr_divemode_1sec_3: ; submerged |
837 btfss FLAG_apnoe_mode ; in apnoe mode? | |
838 return ; NO - done | |
839 btfss apnoe_at_surface ; - been at surface before? | |
840 bra isr_divemode_1sec_3a ; NO - increment the dive time | |
841 bcf apnoe_at_surface ; YES - a new dive has begun | |
842 bsf apnoe_new_dive ; - signal a new dive has begun | |
843 clrf apnoe_surface_secs ; - clear surface seconds | |
844 clrf apnoe_surface_mins ; - clear surface minutes | |
845 clrf apnoe_dive_secs ; - clear dive seconds | |
846 clrf apnoe_dive_mins ; - clear dive minutes | |
847 MOVII pressure_rel_cur,pressure_rel_max ; - reset max pressure to current pressure | |
848 bsf trigger_pres_max_changed ; - signal a new maximum pressure | |
849 isr_divemode_1sec_3a: | |
850 incf apnoe_dive_secs,F ; increment dive time, seconds | |
851 movlw d'59' ; 60 seconds make a minute | |
852 cpfsgt apnoe_dive_secs ; next full minute reached? | |
853 return ; NO - done | |
854 clrf apnoe_dive_secs ; YES - reset seconds to 0 | |
855 incf apnoe_dive_mins,F ; - increment dive time, minutes | |
856 return ; - done | |
0 | 857 |
623 | 858 isr_divemode_1sec_4: ; at surface |
859 btfss FLAG_apnoe_mode ; in apnoe mode? | |
860 return ; NO - done | |
861 bsf apnoe_at_surface ; YES - memorize been at the surface | |
862 incf apnoe_surface_secs,F ; - increment surface time, seconds | |
863 movlw d'59' ; - 60 seconds make a minute | |
864 cpfsgt apnoe_surface_secs ; - next full minute reached? | |
865 return ; NO - done | |
866 clrf apnoe_surface_secs ; YES - reset seconds to 0 | |
867 incf apnoe_surface_mins,F ; - increment surface time, minutes | |
868 return ; - done | |
869 | |
870 | |
634 | 871 ;----------------------------------------------------------------------------- |
872 ; Helper Function - BCD to Binary conversion | |
873 ; | |
623 | 874 ; Input WREG = value in BCD |
875 ; Output WREG = value in binary | |
876 ; | |
877 isr_rtcc_convert_BCD_DEC: | |
634 | 878 movwf isr_lo ; copy BCD to isr_lo |
879 swapf isr_lo, W ; create swapped copy in WREG | |
880 andlw 0x0F ; keep only the tens | |
881 rlncf WREG, W ; WREG = 2 * tens | |
623 | 882 subwf isr_lo, F ; 16 * tens + ones - 2*tens |
883 subwf isr_lo, F ; 14 * tens + ones - 2*tens | |
884 subwf isr_lo, W ; 12 * tens + ones - 2*tens | |
634 | 885 return ; done |
0 | 886 |
887 | |
634 | 888 ;----------------------------------------------------------------------------- |
889 ; Check Buttons | |
623 | 890 ; |
582 | 891 isr_switch_right: |
640 | 892 bcf INTCON,INT0IE ; disable external interrupt 0 |
893 | |
894 btfsc button_hold_down_allowed,A ; ignore for mechanical push buttons | |
895 bra isr_switch_right2 | |
896 btfsc T4CON,TMR4ON ; Timer4 running? | |
897 bra timer4_restart ; Yes, restart | |
898 isr_switch_right2: | |
899 | |
582 | 900 btfss flip_screen ; 180° flipped? |
634 | 901 bsf switch_right ; NO - set flag for right button |
582 | 902 btfsc flip_screen ; 180° flipped? |
634 | 903 bsf switch_left ; YES - set flag for left button |
904 bra isr_switch_common ; continue with common part | |
0 | 905 |
582 | 906 isr_switch_left: |
640 | 907 bcf INTCON3,INT1IE ; disable external interrupt 1 |
908 | |
909 btfsc button_hold_down_allowed,A ; ignore for mechanical push buttons | |
910 bra isr_switch_left2 | |
911 btfsc T4CON,TMR4ON ; Timer4 running? | |
912 bra timer4_restart ; Yes, restart | |
913 isr_switch_left2: | |
914 | |
582 | 915 btfss flip_screen ; 180° flipped? |
634 | 916 bsf switch_left ; NO - set flag for left button |
582 | 917 btfsc flip_screen ; 180° flipped? |
634 | 918 bsf switch_right ; YES - set flag for right button |
919 ;bra isr_switch_common ; continue with common part | |
623 | 920 |
0 | 921 isr_switch_common: |
640 | 922 btfss button_hold_down_allowed,A ; ignore for mechanical push buttons |
923 bsf T4CON,TMR4ON ; Start timer 4 | |
924 | |
634 | 925 btfsc tmr5_preemtion_allowed ; timer 5 preemption allowed? |
926 bsf PIR5,TMR5IF ; YES - preempt timer 5 | |
927 movlw TMR1H_VALUE_FIRST ; load timer 1 (in steps of 7.8125 ms) | |
623 | 928 movwf TMR1H ; ... |
634 | 929 clrf TMR1L ; ... |
604 | 930 bsf T1CON,TMR1ON ; start timer 1 |
640 | 931 bcf INTCON3,INT1IF ; clear ext. int 1 request |
932 bcf INTCON,INT0IF ; clear ext. int 0 request | |
634 | 933 return ; done |
0 | 934 |
623 | 935 |
634 | 936 ;----------------------------------------------------------------------------- |
937 ; Button hold-down Interrupt | |
623 | 938 ; |
0 | 939 timer1int: |
634 | 940 bcf PIR1,TMR1IF ; clear timer 1 IRQ request |
640 | 941 bcf INTCON,INT0IF ; clear ext. int 0 request |
942 bcf INTCON3,INT1IF ; clear ext. int 1 request | |
634 | 943 |
451 | 944 ; digital |
604 | 945 btfss switch_left1 ; left button hold-down? |
946 bra timer1int_left ; YES | |
947 btfss switch_right2 ; right button hold-down? | |
948 bra timer1int_right ; YES | |
582 | 949 |
623 | 950 ; analog |
604 | 951 btfsc analog_sw2_pressed ; left button hold-down? |
952 bra timer1int_left ; YES | |
953 btfsc analog_sw1_pressed ; right button hold-down? | |
954 bra timer1int_right ; YES | |
582 | 955 |
634 | 956 ; no button hold-down, stop timer 1 |
604 | 957 bcf T1CON,TMR1ON ; stop timer 1 |
634 | 958 bsf INTCON,INT0IE ; enable INT0 IRQ |
959 bsf INTCON3,INT1IE ; enable INT1 IRQ | |
451 | 960 return |
0 | 961 |
962 timer1int_left: | |
582 | 963 btfss flip_screen ; 180° flipped? |
634 | 964 bsf switch_left ; set flag for left button |
582 | 965 btfsc flip_screen ; 180° flipped? |
634 | 966 bsf switch_right ; set flag for right button |
604 | 967 bra timer1int_common ; continue |
623 | 968 |
0 | 969 timer1int_right: |
582 | 970 btfss flip_screen ; 180° flipped? |
634 | 971 bsf switch_right ; set flag for right button |
582 | 972 btfsc flip_screen ; 180° flipped? |
634 | 973 bsf switch_left ; set flag for left button |
623 | 974 ;bra timer1int_common ; continue |
975 | |
634 | 976 timer1int_common: ; load timer 1 for next button press |
623 | 977 movlw TMR1H_VALUE_CONT ; default to surface mode value |
978 btfsc divemode ; in dive mode? | |
979 movlw TMR1H_VALUE_CONT_DIVE ; YES - overwrite with dive mode value | |
980 movwf TMR1H ; write value to timer, high byte | |
634 | 981 clrf TMR1L ; write value to timer, low byte (zero) |
982 return ; done (timer1 kept running) | |
0 | 983 |
623 | 984 |
634 | 985 ;----------------------------------------------------------------------------- |
986 ; Increment Surface Interval (counted in minutes and in seconds) | |
623 | 987 ; |
988 ; int_O_desaturation_time is only computed while in start, surface mode, | |
629 | 989 ; menue_tree or ghostwriter. So the ISR may clock surface_interval_mins |
634 | 990 ; past the actual surface interval time. But TFT_surf_cv_lastdive will |
629 | 991 ; check int_O_desaturation_time and in case int_O_desaturation_time is |
992 ; zero it will not show surface_interval_mins but surface_interval_secs instead. | |
993 ; Thus the glitch will remain invisible. | |
623 | 994 ; |
634 | 995 inc_surface_interval_secs: ; called every second when not in dive mode |
996 incf surface_interval_secs+0,F ; increment the lowest byte | |
997 clrf WREG ; clear WREG | |
998 addwfc surface_interval_secs+1,F ; add carry from byte before, if it did wrap-around | |
999 addwfc surface_interval_secs+2,F ; add carry from byte before, if it did wrap-around | |
1000 addwfc surface_interval_secs+3,F ; add carry from byte before, if it did wrap-around | |
1001 return ; done | |
629 | 1002 |
634 | 1003 inc_surface_interval_mins: ; called every minute when not in dive mode |
1004 movff int_O_desaturation_time+0,isr_lo ; get desaturation time, low byte | |
1005 movff int_O_desaturation_time+1,WREG ; get desaturation time, high byte | |
1006 iorwf isr_lo,W ; inclusive-or low & high byte, desaturation time = 0 ? | |
1007 bz clr_surface_interval_mins ; YES - reset surface interval minutes counter | |
1008 INCI surface_interval_mins ; NO - increment surface interval | |
1009 return ; - done | |
629 | 1010 |
631 | 1011 rst_surface_interval: |
629 | 1012 bcf reset_surface_interval ; reset request flag |
631 | 1013 ; reset the surface interval counted in seconds |
629 | 1014 clrf surface_interval_secs+0 ; reset surface interval (seconds), lowest byte |
1015 clrf surface_interval_secs+1 ; ... | |
1016 clrf surface_interval_secs+2 ; ... | |
1017 clrf surface_interval_secs+3 ; reset surface interval (seconds), highest byte | |
631 | 1018 ; reset the surface interval counted in minutes |
629 | 1019 movff opt_diveTimeout,surface_interval_mins+0 ; set surface interval (minutes), low byte, to dive timeout offset |
1020 clrf surface_interval_mins+1 ; reset surface interval (minutes), high byte | |
631 | 1021 return ; done |
629 | 1022 |
631 | 1023 clr_surface_interval_mins: |
1024 clrf surface_interval_mins+0 ; reset surface interval (minutes), low byte | |
1025 clrf surface_interval_mins+1 ; reset surface interval (minutes), high byte | |
629 | 1026 return ; done |
1027 | |
634 | 1028 ;----------------------------------------------------------------------------- |
0 | 1029 |
582 | 1030 END |