Mercurial > public > hwos_code
annotate src/isr.asm @ 630:4cd81bdbf15c
3.08 stable release
| author | heinrichsweikamp |
|---|---|
| date | Fri, 21 Feb 2020 10:51:36 +0100 |
| parents | 237931377539 |
| children | 185ba2f91f59 |
| rev | line source |
|---|---|
| 0 | 1 ;============================================================================= |
| 2 ; | |
| 629 | 3 ; File isr.asm combined next generation V3.06.2 |
| 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 |
| 19 ;============================================================================= | |
| 623 | 20 ; Code to be placed at fixed position |
| 21 ; | |
| 604 | 22 isr_high CODE 0x0008 ; high priority interrupts |
| 582 | 23 bra HighInt |
| 24 nop | |
| 25 nop | |
| 26 nop | |
| 27 nop | |
| 28 nop | |
| 29 nop | |
| 30 bra HighInt | |
| 623 | 31 ; *** low priority interrupts are not used *** |
| 604 | 32 isr_low CODE 0x00018 ; low priority interrupts |
| 623 | 33 retfie FAST ; do an immediate return with restore of BSR, STATUS and WREG |
| 34 | |
| 0 | 35 |
| 623 | 36 ;============================================================================= |
| 37 ; Interrupt Dispatcher | |
| 38 ; | |
| 0 | 39 HighInt: |
| 623 | 40 ; initialize interrupt code |
| 41 banksel isr_backup ; default bank for all ISR code is bank ISR data | |
| 629 | 42 movff PRODL,PROD_backup+0 ; back-up PRODL |
| 43 movff PRODH,PROD_backup+1 ; back-up PRODH | |
| 623 | 44 ; serve buttons |
| 45 btfsc PIR1,TMR1IF ; timer 1 interrupt (button hold-down timer)? | |
| 46 rcall timer1int ; YES - reset timer | |
| 47 btfsc INTCON,INT0IF ; right button activity? | |
| 48 rcall isr_switch_right ; YES - check right switch | |
| 49 btfsc INTCON3,INT1IF ; left button activity? | |
| 50 rcall isr_switch_left ; YES - check left switch | |
| 0 | 51 |
| 623 | 52 IFDEF _external_sensor |
| 53 ; serve IR/S8 link timer | |
| 54 btfsc PIR3,RC2IF ; UART 2 interrupt? | |
| 55 rcall isr_uart2 ; YES - get a byte from the IR/S8 link | |
| 56 btfsc PIR2,TMR3IF ; timer 3 interrupt? | |
| 57 rcall isr_timer3 ; YES - check bytes received from IR/S8 link for being a valid telegram | |
| 629 | 58 ELSE |
| 59 bcf PIR3,RC2IF ; clear UART 2 interrupt | |
| 60 bcf PIR2,TMR3IF ; clear timer 3 interrupt | |
| 61 ; fill-up to keep code size identical to _external_sensor variant, see "Attention" below | |
| 62 nop | |
| 63 nop | |
| 623 | 64 ENDIF |
| 65 | |
| 66 ; serve pressure and temperature sensor | |
| 67 btfsc PIR5,TMR7IF ; timer 7 interrupt? | |
| 68 rcall isr_tmr7 ; YES - do every 62.5 ms tasks: read sensors, set CPU speed | |
| 69 | |
| 70 ; serve real-time clock (RTCC) | |
| 71 btfsc PIR3,RTCCIF ; real-time-clock interrupt? | |
| 72 rcall isr_rtcc ; YES - do every 1/2 s tasks: read RTC, trigger timed tasks, adjust CPU speed, gauge battery, etc. | |
| 113 | 73 |
| 623 | 74 ; clean up and exit |
| 629 | 75 movff PROD_backup+0,PRODL ; restore PRODL |
| 76 movff PROD_backup+1,PRODH ; restore PRODH | |
| 623 | 77 bsf trigger_isr_updates ; signal that the ISR had kicked in |
| 78 retfie FAST ; return from interrupt restoring BSR, STATUS and WREG | |
| 79 | |
| 113 | 80 |
| 623 | 81 ;============================================================================= |
| 82 ; CPU speed adjustment | |
| 83 ; | |
| 84 isr_adjust_speed: | |
| 85 movff cpu_speed_request,cpu_speed_state ; acknowledge CPU speed request | |
| 0 | 86 |
| 623 | 87 btfsc speed_is_eco ; speed 'eco' requested? |
| 88 bra isr_set_speed_to_eco ; YES - set eco speed | |
| 89 btfsc speed_is_fastest ; NO - speed 'fastest' requested? | |
| 90 bra isr_set_speed_to_fastest ; YES - set fastest speed | |
| 91 ;bra isr_set_speed_to_normal ; NO - default to normal speed | |
| 0 | 92 |
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93 isr_set_speed_to_normal: |
| 629 | 94 clrf OSCTUNE ; switch off x4 PLL |
| 623 | 95 movlw b'01110010' ; select 16 MHz |
| 96 movwf OSCCON ; set prescaler | |
| 97 movlw T2CON_NORMAL ; PWM1 dimming factor for speed 'normal' | |
| 98 bra isr_adjust_speed_exit | |
| 99 | |
| 100 isr_set_speed_to_eco: | |
| 629 | 101 clrf OSCTUNE ; switch off x4 PLL |
| 623 | 102 movlw b'00110010' ; select 1 MHz |
| 103 movwf OSCCON ; set prescaler | |
| 104 movlw T2CON_ECO ; PWM1 dimming factor for speed 'eco' | |
| 105 bra isr_adjust_speed_exit | |
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106 |
| 623 | 107 isr_set_speed_to_fastest: |
| 108 movlw b'01110010' ; select 16 MHz by default | |
| 109 btfsc lv_core ; on OSTC with low voltage core? | |
| 110 movlw b'01100010' ; YES - reduce to 8 MHz | |
| 111 movwf OSCCON ; set prescaler | |
| 629 | 112 bsf OSCTUNE,6 ; switch on x4 PLL -> 64 MHz on high voltage core, 32 MHz on low voltage core |
| 623 | 113 movlw T2CON_FASTEST ; PWM1 dimming factor for speed 'fastest' |
| 114 ;bra isr_adjust_speed_exit | |
| 115 | |
| 116 isr_adjust_speed_exit: | |
| 629 | 117 movwf T2CON ; adjust PWM1 for LED dimming |
| 623 | 118 btfss OSCCON,HFIOFS ; PLL stabilized? |
| 119 bra isr_adjust_speed_exit ; NO - loop to give it some more time | |
| 120 return ; YES - done | |
| 121 | |
| 122 ; Attention: fill-up the gap between the end of this section | |
| 123 ; and the next section which starts at 0x00080 !! | |
| 629 | 124 ;nop |
| 623 | 125 |
| 126 block_0_code_end: ; marker to find end of code in block 0 in linker report file | |
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|
127 |
| 623 | 128 ;============================================================================= |
| 129 ; jump vector for the bootloader, placed at an appointed position here | |
| 130 ; | |
| 604 | 131 isr_restore CODE 0x00080 ; restore first flash page from EEPROM |
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132 restore_flash_0x00080: |
| 582 | 133 goto restore_flash |
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134 |
| 623 | 135 ;============================================================================= |
| 136 ; routines for handling digital-attached external sensors | |
| 137 ; | |
| 138 IFDEF _external_sensor | |
| 139 | |
| 140 ; Take a byte received on IR/S8 link and slot it into the RX buffer | |
| 141 ; | |
| 142 isr_uart2: | |
| 628 | 143 bcf PIR3,RC2IF ; Clear UART 2 interrupt flag |
| 623 | 144 banksel RCREG2 ; RC*2 is outside access RAM |
| 145 movff RCREG2,isr_lo ; copy received byte to isr_lo | |
| 146 bcf RCSTA2,CREN ; clear receiver status | |
| 147 bsf RCSTA2,CREN ; ... | |
| 148 banksel isr_backup ; back to default ISR bank | |
| 149 movlw .18 ; size of the buffer | |
| 150 cpfslt ir_s8_counter ; number of received bytes < buffer size? | |
| 151 bra isr_uart2_1 ; NO - buffer full, do not store the byte | |
| 152 movf ir_s8_counter,W ; YES - copy number of received bytes to WREG | |
| 153 MOVII FSR0L,FSR0_backup ; - back-up FSR0 | |
| 154 lfsr FSR0,ir_s8_buffer ; - load base address of buffer | |
| 155 movff isr_lo,PLUSW0 ; - store received byte | |
| 156 MOVII FSR0_backup,FSR0L ; - restore FSR0 | |
| 157 incf ir_s8_counter,F ; - increment number of received bytes by 1 | |
| 158 isr_uart2_1: | |
| 159 clrf TMR3L ; reload timer 3 | |
| 160 movlw .253 ; ... | |
| 161 movwf TMR3H ; ... | |
| 162 bsf T3CON,TMR3ON ; (re)start timeout timer 3 | |
| 163 return | |
| 164 | |
| 165 | |
| 166 ; Timeout on IR/S8 link: check the checksum and gather the received data | |
| 167 ; | |
| 168 isr_timer3: | |
| 604 | 169 bcf T3CON,TMR3ON ; stop timer 3 |
| 582 | 170 movlw .15 |
| 604 | 171 cpfseq ir_s8_counter ; got exactly 15 bytes? |
| 623 | 172 bra isr_timer3_1 ; NO - test for 16 bytes |
| 604 | 173 bra isr_timer3_ir ; YES - got 15 bytes, compute local checksum |
| 0 | 174 isr_timer3_1: |
| 582 | 175 movlw .16 |
| 604 | 176 cpfseq ir_s8_counter ; got exactly 16 bytes? |
| 623 | 177 bra isr_timer3_2 ; NO - test for 17 bytes |
| 604 | 178 tstfsz ir_s8_buffer+.15 ; YES - last byte = 0x00 ? |
| 179 bra isr_timer3_exit ; No - exit | |
| 180 bra isr_timer3_ir ; YES - got 16 bytes, compute local checksum | |
| 113 | 181 isr_timer3_2: |
| 582 | 182 movlw .17 |
| 604 | 183 cpfseq ir_s8_counter ; got exactly 17 bytes? |
| 184 bra isr_timer3_exit ; NO - exit | |
| 185 bra isr_timer3_s8 ; YES - S8 data | |
| 0 | 186 |
| 623 | 187 ; Process telegram received on IR link |
| 188 isr_timer3_ir: | |
| 189 movlw .12 ; checksum shall be computed for 1st and next 12 bytes | |
| 190 rcall compute_IR_S8_checksum ; compute checksum | |
| 191 movf ir_s8_buffer+.13,W ; get low byte of the received checksum | |
| 192 cpfseq isr_mpr+0 ; = low byte of the calculated local checksum? | |
| 193 bra isr_timer3_exit ; NO - exit | |
| 194 movf ir_s8_buffer+.14,W ; get high byte of the received checksum | |
| 195 cpfseq isr_mpr+1 ; = high byte of the calculated local checksum? | |
| 196 bra isr_timer3_exit ; NO - exit | |
| 197 ; YES to both - received telegram valid, copy data | |
| 0 | 198 |
| 623 | 199 movff ir_s8_buffer+.1, hud_status_byte |
| 200 movff ir_s8_buffer+.2, sensor1_mv+0 | |
| 201 movff ir_s8_buffer+.3, sensor1_mv+1 | |
| 202 movff ir_s8_buffer+.4, sensor2_mv+0 | |
| 203 movff ir_s8_buffer+.5, sensor2_mv+1 | |
| 204 movff ir_s8_buffer+.6, sensor3_mv+0 | |
| 205 movff ir_s8_buffer+.7, sensor3_mv+1 | |
| 206 movff ir_s8_buffer+.8, sensor1_ppO2 | |
| 207 movff ir_s8_buffer+.9, sensor2_ppO2 | |
| 208 movff ir_s8_buffer+.10,sensor3_ppO2 | |
| 582 | 209 movff ir_s8_buffer+.11,hud_battery_mv+0 |
| 210 movff ir_s8_buffer+.12,hud_battery_mv+1 | |
| 0 | 211 |
| 623 | 212 bsf hud_connection_ok ; set manually for hwHUD w/o the HUD module |
| 213 bra isr_timer3_reload ; reload timer and exit | |
| 214 | |
| 215 ; Process telegram received on S8 link | |
| 216 isr_timer3_s8: | |
| 217 movlw .14 ; checksum shall be computed for 1st and next 14 bytes | |
| 218 rcall compute_IR_S8_checksum ; compute checksum | |
| 219 | |
| 220 movf ir_s8_buffer+.15,W ; get low byte of the received checksum | |
| 221 cpfseq isr_mpr+0 ; = low byte of the calculated local checksum? | |
| 222 bra isr_timer3_exit ; NO - exit | |
| 223 movf ir_s8_buffer+.16,W ; get high byte of the received checksum | |
| 224 cpfseq isr_mpr+1 ; = high byte of the calculated local checksum? | |
| 225 bra isr_timer3_exit ; NO - exit | |
| 226 ; YES to both - received telegram valid, copy data | |
| 227 movff ir_s8_buffer+.3, hud_status_byte | |
| 228 movff ir_s8_buffer+.13,hud_battery_mv+0 | |
| 229 movff ir_s8_buffer+.14,hud_battery_mv+1 | |
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230 |
| 623 | 231 btfsc trigger_S8_data_update ; last data already processed? |
| 628 | 232 bra isr_timer3_exit ; NO - skip copying new results (And not reload the timeout) |
| 623 | 233 bsf trigger_S8_data_update ; YES - set flag for new data available |
| 582 | 234 |
| 628 | 235 ; - copy more data |
| 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: | |
| 247 movlw ir_timeout_value ; in multiples of 62.5 ms | |
| 248 movwf ir_s8_timeout ; reload timeout | |
| 0 | 249 isr_timer3_exit: |
| 604 | 250 clrf ir_s8_counter ; clear pointer |
| 251 bcf PIR2,TMR3IF ; clear flag | |
| 582 | 252 return |
| 0 | 253 |
| 254 | |
| 623 | 255 ; compute checksum on data in RX buffer |
| 256 ; | |
| 257 compute_IR_S8_checksum: | |
| 258 movwf ir_s8_counter ; initialize loop counter from WREG | |
| 259 movff ir_s8_buffer+0,isr_mpr+0 ; initialize low byte of the local checksum with first byte in buffer | |
| 260 clrf isr_mpr+1 ; clear the high byte of the local checksum | |
| 261 lfsr FSR0,ir_s8_buffer ; load base address of the buffer | |
| 262 compute_IR_S8_checksum_loop: | |
| 263 movf PREINC0,W ; get next byte | |
| 264 addwf isr_mpr+0,F ; add it to the to checksum, low byte | |
| 265 movlw .0 ; no explicit data to add to the high byte... | |
| 266 addwfc isr_mpr+1,F ; ... besides the carry | |
| 267 decfsz ir_s8_counter ; decrement number of bytes yet to do, all done? | |
| 268 bra compute_IR_S8_checksum_loop ; NO - loop | |
| 269 return ; YES - done | |
| 113 | 270 |
| 623 | 271 ENDIF ; _external_sensor |
| 113 | 272 |
| 0 | 273 ;============================================================================= |
| 274 | |
| 623 | 275 ;============================================================================= |
| 276 ; Tasks every 62.5 ms: buttons, dimming, pressure/temp sensor and CPU speed | |
| 277 ; | |
| 278 isr_tmr7: | |
| 582 | 279 bcf PIR5,TMR7IF ; clear flag |
| 623 | 280 movlw .248 ; rollover after 248 cycles -> 62.5 ms |
| 281 movff WREG,TMR7H ; timer 7 is outside access RAM | |
| 0 | 282 |
| 623 | 283 call get_analog_switches ; get analog readings, CAUTION: returns in bank common |
| 284 banksel isr_backup ;back to ISR default bank | |
| 285 | |
| 448 | 286 btfss INTCON3,INT1IE |
| 582 | 287 bra isr_tmr7_a |
| 448 | 288 btfsc analog_sw2_pressed |
| 623 | 289 rcall isr_switch_left ; get digital readings of left switch |
| 448 | 290 isr_tmr7_a: |
| 291 btfss INTCON,INT0IE | |
| 582 | 292 bra isr_tmr7_b |
| 448 | 293 btfsc analog_sw1_pressed |
| 623 | 294 rcall isr_switch_right ; get digital readings of right switch |
| 448 | 295 isr_tmr7_b: |
| 623 | 296 btfss block_sensor_interrupt ; sensor interrupts disabled? |
| 604 | 297 bra isr_tmr7_c ; NO - continue |
| 623 | 298 return ; YES - done |
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299 isr_tmr7_c: |
| 623 | 300 movf max_CCPR1L,W ; dim value |
| 582 | 301 cpfseq CCPR1L ; = current PWM value? |
| 623 | 302 rcall isr_dimm_tft ; NO - adjust until max_CCPR1L = CCPR1L |
| 0 | 303 |
| 623 | 304 IFDEF _external_sensor |
| 305 decfsz ir_s8_timeout,F ; IR / S8 digital data still valid? | |
| 306 bra isr_tmr7_2 ; YES - continue | |
| 307 movlw ir_timeout_value ; NO - get timer reload in multiples of 62.5 ms | |
| 308 movwf ir_s8_timeout ; - reload the timer | |
| 309 btfss analog_o2_input ; - analog input available? | |
| 310 bra isr_tmr7_1a ; NO - clear data | |
| 311 btfss s8_digital_avail ; YES - S8 digital interface available? | |
| 312 bra isr_tmr7_2 ; NO - must be analog interface in use, keep data | |
| 113 | 313 isr_tmr7_1a: |
| 623 | 314 clrf hud_status_byte ; S8/IR timeout clears all analog input readings to zero -> fallback will be triggered when in sensor mode |
| 315 CLRI hud_battery_mv ; clear battery voltage | |
| 582 | 316 |
| 623 | 317 banksel sensor1_mv ; select bank where sensor data are stored |
| 318 CLRI sensor1_mv ; clear all sensor data | |
| 319 CLRI sensor2_mv ; ... | |
| 320 CLRI sensor3_mv ; ... | |
| 321 clrf sensor1_ppO2 ; ... | |
| 322 clrf sensor2_ppO2 ; ... | |
| 323 clrf sensor3_ppO2 ; ... | |
| 628 | 324 banksel s8_rawdata_sensor1 |
| 325 CLRI s8_rawdata_sensor1 ; clear all sensor data (raw data) | |
| 326 clrf s8_rawdata_sensor1+2 | |
| 327 CLRI s8_rawdata_sensor2 ; clear all sensor data (raw data) | |
| 328 clrf s8_rawdata_sensor2+2 | |
| 329 CLRI s8_rawdata_sensor3 ; clear all sensor data (raw data) | |
| 330 clrf s8_rawdata_sensor3+2 | |
| 623 | 331 banksel isr_backup ; back to ISR default bank |
| 332 | |
| 333 bsf trigger_S8_data_update ; signal a data update | |
| 334 ENDIF | |
| 582 | 335 |
| 0 | 336 isr_tmr7_2: |
| 623 | 337 btfsc block_sensor_interrupt ; sensor interrupts disabled? |
| 338 return ; YES - abort | |
| 0 | 339 |
| 340 isr_sensor_state2: | |
| 623 | 341 btfss sensor_state_counter,0 ; every 1/4 second |
| 342 bsf trigger_quarter_second ; set flag | |
| 343 | |
| 344 btfss speed_is_normal ; CPU running on normal speed? | |
| 345 rcall isr_set_speed_to_normal ; NO - set CPU speed to normal | |
| 582 | 346 |
| 623 | 347 ; update surface pressure |
| 348 btfss update_surface_pressure ; shall update the surface pressure? | |
| 349 bra isr_sensor_state2_1 ; NO | |
| 350 bcf update_surface_pressure ; YES - clear request flag | |
| 351 MOVII pressure_abs_ref,pressure_surf ; - update surface pressure | |
| 352 | |
| 353 isr_sensor_state2_1: | |
| 354 incf sensor_state_counter,F ; counts to eight for state machine | |
| 0 | 355 |
| 623 | 356 ; State 1: clear flags and average registers, get temperature (51 us) and start pressure integration (73.5 us) |
| 357 ; State 2: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 358 ; State 3: get temperature (51 us) and start pressure integration (73.5 us) | |
| 359 ; State 4: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 360 ; State 5: get temperature (51 us) and start pressure integration (73.5 us) | |
| 361 ; State 6: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 362 ; State 7: get temperature (51 us) and start pressure integration (73.5 us) | |
| 363 ; 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 | 364 |
| 623 | 365 movff sensor_state_counter,WREG ; WREG used as temp here... |
| 582 | 366 dcfsnz WREG,F |
| 623 | 367 bra sensor_int_state1_plus_restart ; do state 1 |
| 582 | 368 dcfsnz WREG,F |
| 623 | 369 bra sensor_int_state2 ; do state 2 |
| 582 | 370 dcfsnz WREG,F |
| 623 | 371 bra sensor_int_state1 ; do state 3 |
| 582 | 372 dcfsnz WREG,F |
| 623 | 373 bra sensor_int_state2 ; do state 4 |
| 582 | 374 dcfsnz WREG,F |
| 623 | 375 bra sensor_int_state1 ; do state 5 |
| 582 | 376 dcfsnz WREG,F |
| 623 | 377 bra sensor_int_state2 ; do state 6 |
| 582 | 378 dcfsnz WREG,F |
| 623 | 379 bra sensor_int_state1 ; do state 7 |
| 380 | |
| 381 ; first, do state 2: | |
| 382 call get_pressure_value ; state 2: get pressure (51 us) | |
| 383 call get_temperature_start ; and start temperature integration (73.5 us) | |
| 384 call calculate_compensation ; calculate temperature compensated pressure (27 us) | |
| 0 | 385 |
| 623 | 386 ; build average for pressure |
| 387 bcf STATUS,C ; clear carry bit | |
| 388 rrcf pressure_abs_avg+1 ; divide by 2 | |
| 389 rrcf pressure_abs_avg+0 | |
| 390 bcf STATUS,C ; clear carry bit | |
| 391 rrcf pressure_abs_avg+1 ; divide by 2, again | |
| 392 rrcf pressure_abs_avg+0 | |
| 393 | |
| 629 | 394 ; copy into result register and set update flag |
| 623 | 395 MOVII pressure_abs_avg,pressure_abs |
| 629 | 396 ; bsf trigger_pres_update ; signal a pressure update |
| 0 | 397 |
| 623 | 398 ; build average for temperature |
| 399 bcf STATUS,C ; clear carry bit by default | |
| 400 btfsc temperature_avg+1,7 ; sign bit set? | |
| 401 bsf STATUS,C ; YES - copy sign bit to carry bit | |
| 402 rrcf temperature_avg+1 ; divide signed temperature by 2 | |
| 403 rrcf temperature_avg+0 ; ... | |
| 404 bcf STATUS,C ; clear carry bit by default | |
| 405 btfsc temperature_avg+1,7 ; sign bit set? | |
| 406 bsf STATUS,C ; YES - copy sign bit to carry bit | |
| 407 rrcf temperature_avg+1 ; divide signed temperature by 2 again (by 4 in total now) | |
| 408 rrcf temperature_avg+0 ; ... | |
| 409 MOVII temperature_avg,temperature_cur ; store final result | |
| 0 | 410 |
| 623 | 411 ; check for temperature change |
| 412 movf temperature_cur+0,W ; get current temperature, low byte | |
| 413 cpfseq temperature_last+0 ; compare with last temperature, equal? | |
| 414 bra isr_sensor_state2_2 ; NO - temperature has changed | |
| 415 movf temperature_cur+1,W ; get current temperature, high byte | |
| 416 cpfseq temperature_last+1 ; compare with last temperature, equal? | |
| 417 bra isr_sensor_state2_2 ; NO - temperature has changed | |
| 418 bra isr_sensor_state2_3 ; YES to both - no change | |
| 0 | 419 |
| 420 isr_sensor_state2_2: | |
| 623 | 421 MOVII temperature_cur,temperature_last ; store current temperature as last temperature for next round |
| 422 bsf trigger_temp_changed ; set flag for temperature change | |
| 423 | |
| 0 | 424 isr_sensor_state2_3: |
| 629 | 425 ; reset state counter |
| 623 | 426 clrf sensor_state_counter ; reset state counter |
| 427 btfss reset_max_pressure ; shall clear the max pressure? | |
| 428 bra isr_sensor_state2_3a ; NO - continue with checking for pressure change | |
| 429 bcf reset_max_pressure ; YES - clear request flag | |
| 430 CLRI pressure_rel_max ; - clear max. pressure | |
| 0 | 431 |
| 623 | 432 isr_sensor_state2_3a: |
| 433 ; check for pressure change | |
| 434 movf pressure_abs+0,W ; get current pressure, low byte | |
| 435 cpfseq pressure_abs_last+0 ; compare with last pressure, equal? | |
| 436 bra isr_sensor_state2_4 ; NO - pressure has changed | |
| 437 movf pressure_abs+1,W ; YES - get current pressure, high byte | |
| 438 cpfseq pressure_abs_last+1 ; - compare with last pressure, equal? | |
| 439 bra isr_sensor_state2_4 ; NO - pressure has changed | |
| 440 bra isr_sensor_state2_5 ; YES - no change | |
| 441 | |
| 442 isr_sensor_state2_4: | |
| 443 MOVII pressure_abs,pressure_abs_last ; store current pressure as last pressure for next round | |
| 444 bsf trigger_pres_cur_changed ; signal a pressure change | |
| 445 | |
| 446 isr_sensor_state2_5: | |
| 447 ; compute relative pressure | |
| 448 movf pressure_surf+0,W ; get surface pressure, low byte | |
| 449 subwf pressure_abs+0,W ; WREG = pressure_abs - pressure_surf (low byte) | |
| 450 movwf pressure_rel_cur+0 ; store relative pressure, low byte | |
| 451 movf pressure_surf+1,W ; get surface pressure, high byte | |
| 452 subwfb pressure_abs+1,W ; WREG = pressure_abs - pressure_surf (high byte) | |
| 453 movwf pressure_rel_cur+1 ; store relative pressure, high byte | |
| 454 btfss STATUS,N ; relative pressure < 0 ? | |
| 455 bra isr_sensor_state2_6 ; NO - OK, keep result | |
| 456 CLRI pressure_rel_cur ; YES - set relative pressure to zero | |
| 0 | 457 |
| 623 | 458 isr_sensor_state2_6: |
| 459 ; check for new max relative pressure | |
| 460 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 461 subwf pressure_rel_max+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
| 462 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 463 subwfb pressure_rel_max+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
| 464 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
| 465 bra isr_sensor_state2_6a ; NO | |
| 466 MOVII pressure_rel_cur,pressure_rel_max ; YES - set new max rel pressure | |
| 467 bsf trigger_pres_max_changed ; - signal a pressure max change | |
| 468 | |
| 469 isr_sensor_state2_6a: | |
| 0 | 470 |
| 623 | 471 IFDEF _min_depth_option |
| 472 ; check if min/max pressures shall be reset | |
| 473 btfss reset_trip_pressure ; shall reset the resettable min/max pressures? | |
| 474 bra isr_sensor_state2_6b ; NO | |
| 475 bcf reset_trip_pressure ; YES - clear request flag | |
| 476 CLRI pressure_rel_max_trip ; - set max pressure to zero | |
| 477 SETI pressure_rel_min_trip ; - set min pressure to biggest value possible | |
| 478 isr_sensor_state2_6b: | |
| 479 ; check for new resettable max relative pressure | |
| 480 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 481 subwf pressure_rel_max_trip+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
| 482 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 483 subwfb pressure_rel_max_trip+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
| 484 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
| 485 bra isr_sensor_state2_6c ; NO - continue checking for min depth | |
| 486 MOVII pressure_rel_cur,pressure_rel_max_trip ; YES - set new max rel pressure | |
| 487 isr_sensor_state2_6c: | |
| 488 ; check for new resettable min relative pressure | |
| 489 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 490 subwf pressure_rel_min_trip+0,W ; WREG = pressure_rel_min - pressure_rel_cur (low byte) | |
| 491 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 492 subwfb pressure_rel_min_trip+1,W ; WREG = pressure_rel_min - pressure_rel_cur (high byte) | |
| 493 btfss STATUS,C ; result > 0, i.e. new min rel pressure? | |
| 494 bra sensor_int_state_exit ; NO - done | |
| 495 MOVII pressure_rel_cur,pressure_rel_min_trip ; YES - set new min rel pressure | |
| 496 ENDIF ; _min_depth_option | |
| 497 bra sensor_int_state_exit ; done | |
| 0 | 498 |
| 499 | |
| 500 sensor_int_state1_plus_restart: | |
| 623 | 501 ; clear average registers |
| 502 CLRI pressure_abs_avg | |
| 503 CLRI temperature_avg | |
| 0 | 504 |
| 505 sensor_int_state1: | |
| 604 | 506 call get_temperature_value ; state 1: get temperature... |
| 507 call get_pressure_start ; ...and start pressure integration | |
| 582 | 508 bra sensor_int_state_exit |
| 0 | 509 |
| 510 sensor_int_state2: | |
| 604 | 511 call get_pressure_value ; state 2: get pressure (51 us)... |
| 512 call get_temperature_start ; ...and start temperature integration (73.5 us) | |
| 513 call calculate_compensation ; .. and calculate temperature compensated pressure (233 us) | |
| 582 | 514 |
| 0 | 515 sensor_int_state_exit: |
| 623 | 516 bra isr_adjust_speed ; set/restore CPU speed and return |
| 517 | |
| 518 | |
| 519 isr_dimm_tft: ; adjust until max_CCPR1L = CCPR1L | |
| 628 | 520 btfsc screen_type3 ; screen type 3 ? |
| 521 return ; YES - ignore, no dimming function with screen type 3 | |
| 623 | 522 btfsc tft_is_dimming ; is the display dimming? |
| 523 return ; YES - ignore | |
| 524 movf max_CCPR1L,W ; NO - proceed | |
| 628 | 525 cpfsgt CCPR1L ; - CCPR1L > max_CCPR1L ? |
| 526 bra isr_dimm_tft2 ; NO - dim up | |
| 527 decf CCPR1L,F ; YES - dim down | |
| 528 return ; - done | |
| 623 | 529 isr_dimm_tft2: |
| 628 | 530 movf max_CCPR1L,W ; |
| 531 sublw ambient_light_min_eco ; | |
| 623 | 532 cpfsgt CCPR1L ; CCPR1L > max_CCPR1L - ambient_light_min_eco ? |
| 533 bra isr_dimm_tft3 ; NO - dim up slow | |
| 628 | 534 movlw .10 ; YES - dim up faster (+10) |
| 535 addwf CCPR1L,F ; - add to dimming value | |
| 623 | 536 isr_dimm_tft3: |
| 628 | 537 incf CCPR1L,F ; - dim up (+1) |
| 538 return ; - done | |
| 623 | 539 |
| 582 | 540 |
| 0 | 541 ;============================================================================= |
| 623 | 542 ; RTC interrupt on every 1/2 second |
| 543 ; | |
| 544 isr_rtcc: | |
| 545 bcf PIR3,RTCCIF ; clear flag | |
| 546 bsf trigger_half_second ; set flag for a new 1/2 second has begun | |
| 547 btfsc reset_timebase ; shall reset the timebase? | |
| 548 bra isr_rtcc_1 ; YES - warp to new full second | |
| 549 btg timebase_0sec ; NO - toggle the 1/2 second timebase | |
| 550 btfsc timebase_0sec ; - did it toggled 1 -> 0 ? | |
| 551 return ; NO - on half second, done | |
| 0 | 552 |
| 623 | 553 isr_rtcc_1: |
| 554 ; new full second | |
| 555 bsf trigger_full_second ; set flag for a new 1/1 second has begun | |
| 556 | |
| 557 btfsc block_rtc_access ; ISR suspended from accessing the RTC? | |
| 558 bra isr_rtcc_2 ; YES | |
| 559 | |
| 560 banksel RTCCFG ; RTC registers are outside access RAM | |
| 582 | 561 bsf RTCCFG,RTCPTR1 |
| 623 | 562 bsf RTCCFG,RTCPTR0 |
| 563 banksel isr_backup ; back to ISR default bank | |
| 564 | |
| 565 movff RTCVALL,rtc_year ; read year in BCD | |
| 566 movff RTCVALH,rtc_day ; dummy read | |
| 567 movff RTCVALL,rtc_day ; read day in BCD | |
| 568 movff RTCVALH,rtc_month ; read month in BCD | |
| 569 movff RTCVALL,rtc_hour ; read hour in BCD | |
| 570 movff RTCVALH,rtc_secs ; dummy read | |
| 571 movff RTCVALL,rtc_secs ; read seconds in BCD | |
| 572 movff RTCVALH,rtc_mins ; read minutes in BCD | |
| 582 | 573 |
| 574 ; Convert BCD to DEC and set registers | |
| 623 | 575 movf rtc_mins,W |
| 576 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 577 movwf rtc_mins | |
| 578 movf rtc_secs,W | |
| 579 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 580 movwf rtc_secs | |
| 581 movf rtc_hour,W | |
| 582 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 583 movwf rtc_hour | |
| 584 movf rtc_month,W | |
| 585 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 586 movwf rtc_month | |
| 587 movf rtc_day,W | |
| 588 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 589 movwf rtc_day | |
| 590 movf rtc_year,W | |
| 591 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 592 movwf rtc_year | |
| 593 | |
| 594 isr_rtcc_2: | |
| 629 | 595 ; every full second - get ambient light level and set max_CCPR1L |
| 623 | 596 call get_ambient_level ; get ambient light level and set max_CCPR1L |
| 597 banksel isr_backup ; back to ISR default bank (for safety only) | |
| 598 | |
| 599 rcall isr_battery_gauge ; calculate the current charge consumption and add it to the battery gauge | |
| 600 rcall isr_update_uptime ; increment overall OSTC uptime | |
| 601 rcall isr_update_timeout ; process the timeout timer | |
| 602 | |
| 603 btfsc divemode ; in dive mode? | |
| 604 rcall isr_divemode_1sec ; YES - do the every second dive mode tasks | |
| 605 | |
| 629 | 606 ; increment surface interval counted in seconds |
| 623 | 607 btfsc divemode ; in dive mode? |
| 608 btfsc simulatormode ; YES - in simulator mode? | |
| 629 | 609 rcall inc_surface_interval_secs ; NO - YES - increment the surface interval (seconds timer) |
| 610 | |
| 611 ; reset the surface interval timers if requested | |
| 612 btfsc reset_surface_interval ; shall reset both surface interval timers? | |
| 613 call clr_surface_interval ; YES | |
| 0 | 614 |
| 623 | 615 ; reset the timebase if requested |
| 616 btfss reset_timebase ; shall reset the timebase? | |
| 617 bra isr_rtcc_3 ; NO | |
| 618 bcf reset_timebase ; YES - clear request flag | |
| 619 clrf eventbase ; - clear all pending events | |
| 620 clrf timebase ; - clear all timebase flags | |
| 621 clrf timebase_secs ; - clear seconds timer | |
| 622 clrf timebase_mins ; - clear minutes timer | |
| 623 clrf simulator_time ; - clear minutes timer of simulator runtime as well | |
| 624 bsf trigger_half_second ; - set flag for a new 1/2 second has begun | |
| 625 bsf trigger_full_second ; - set flag for a new 1/1 second has begun | |
| 626 return ; - done | |
| 627 | |
| 628 isr_rtcc_3: | |
| 629 ; count-up the 2 seconds timebase timer | |
| 630 btg timebase_1sec ; toggle the 1 second timer bit | |
| 631 btfss timebase_1sec ; did it toggled 1 -> 0 ? | |
| 632 btg timebase_2sec ; YES - toggle the 2 seconds timer bit | |
| 633 | |
| 634 ; count-up the seconds timer | |
| 635 incf timebase_secs,F ; increment seconds timer (may temporary become 60 here) | |
| 636 movlw .59 ; max. for seconds timer | |
| 637 cpfsgt timebase_secs ; seconds timer > max.? | |
| 638 return ; NO - done | |
| 0 | 639 |
| 623 | 640 ; new full minute |
| 629 | 641 clrf timebase_secs ; reset timer |
| 642 bsf trigger_full_minute ; set flag for a new minute has begun | |
| 623 | 643 |
| 629 | 644 ; increment surface interval counted in minutes |
| 645 btfsc divemode ; in dive mode? | |
| 646 btfsc simulatormode ; YES - in simulator mode? | |
| 647 rcall inc_surface_interval_mins ; NO - YES - increment surface interval (minutes timer) | |
| 623 | 648 |
| 629 | 649 btfss simulatormode ; in simulator mode? |
| 650 bra isr_rtcc_4 ; NO | |
| 651 infsnz simulator_time,F ; YES - increment real runtime of the simulator, did wrap around (became zero)? | |
| 652 setf simulator_time ; YES - disallow wrap-around, keep at 255 instead | |
| 0 | 653 |
| 623 | 654 isr_rtcc_4: |
| 629 | 655 incf timebase_mins,F ; increment minutes timer |
| 656 movlw .59 ; max. for minutes timer | |
| 657 cpfsgt timebase_mins ; minutes timer > max.? | |
| 658 return ; NO - done | |
| 623 | 659 |
| 660 ; new full hour | |
| 629 | 661 clrf timebase_mins ; YES - reset timer |
| 662 bsf trigger_full_hour ; - set flag for a new hour has begun | |
| 663 return ; - done | |
| 623 | 664 |
| 665 | |
| 666 ; increment overall OSTC uptime | |
| 667 isr_update_uptime: | |
| 582 | 668 incf uptime+0,F |
| 623 | 669 clrf WREG |
| 582 | 670 addwfc uptime+1,F |
| 671 addwfc uptime+2,F | |
| 672 addwfc uptime+3,F | |
| 623 | 673 return |
| 0 | 674 |
| 582 | 675 |
| 623 | 676 ; process the timeout timer |
| 677 isr_update_timeout: | |
| 678 btfsc reset_timeout ; shall reset the timeout? | |
| 679 bra isr_update_timeout_1 ; YES | |
| 680 tstfsz isr_timeout_timer ; NO - timeout timer already at zero? | |
| 681 decfsz isr_timeout_timer ; NO - decrement timer, reached zero now? | |
| 682 return ; YES / NO - nothing further to do | |
| 683 bsf trigger_timeout ; YES - set timeout flag | |
| 684 return ; - done | |
| 685 isr_update_timeout_1: | |
| 686 bcf reset_timeout ; clear request flag | |
| 687 bcf trigger_timeout ; clear pending timeout trigger, if any | |
| 688 movff isr_timeout_reload,isr_timeout_timer ; reload timer | |
| 689 return ; done | |
| 0 | 690 |
| 623 | 691 ;============================================================================= |
| 692 ; Calculate charge drawn from the battery | |
| 693 ; | |
| 694 isr_battery_gauge: | |
| 695 btfsc block_battery_gauge ; access to battery gauge suspended? | |
| 696 return ; YES - done | |
| 697 MOVLI current_sleepmode,isr_mpr ; NO - default to sleep mode with 100µA/3600 -> nAs | |
| 698 btfss sleepmode ; - in sleep mode? | |
| 699 rcall isr_battery_gauge2 ; NO - compute current consumption value into isr_lo and isr_hi | |
| 700 movf isr_mpr+0,W ; - 48 bit add of isr_mpr:2 with battery_gauge:6 | |
| 582 | 701 addwf battery_gauge+0,F |
| 623 | 702 movf isr_mpr+1,W |
| 582 | 703 addwfc battery_gauge+1,F |
| 623 | 704 clrf WREG |
| 582 | 705 addwfc battery_gauge+2,F |
| 706 addwfc battery_gauge+3,F | |
| 707 addwfc battery_gauge+4,F | |
| 708 addwfc battery_gauge+5,F | |
| 709 return | |
| 710 | |
| 0 | 711 isr_battery_gauge2: |
| 623 | 712 ; set consumption rate in nAs - nano Ampere per second |
| 0 | 713 ; Example: |
| 623 | 714 ; MOVLI .55556,isr_mpr ; 0.2 Ah / 3600 seconds per hour * 1e9s = nAs |
| 715 ; | |
| 716 ; Remark: although all the constants are named current_xxxx, in reality they mean charge! | |
| 0 | 717 |
| 623 | 718 ; Calculate current consumption for LED backlight: 47*CCPR1L+272 (according to values in hwos.inc: 115*CCPR1L+216) |
| 719 movf CCPR1L,W ; get CCPR1L into WREG | |
| 720 mullw current_backlight_multi ; PRODH:PRODL = k * WREG = current_backlight_multi * CCPR1L | |
| 721 ADDLI current_backlight_offset,PRODL ; PRODH:PRODL += current_backlight_offset | |
| 722 MOVII PRODL,isr_mpr ; copy result to isr_mpr | |
| 0 | 723 |
| 623 | 724 ; Add current for CPU and GPU |
| 725 ; cpu_speed_state = ECO 3.10 mA -> 861 nAs | |
| 726 ; = NORMAL 5.50 mA -> 1528 nAs | |
| 727 ; = FASTEST 8.04 mA -> 2233 nAs | |
| 728 btfss speed_is_eco ; speed = eco ? | |
| 729 bra isr_battery_gauge3 ; NO | |
| 730 ADDLI current_speed_eco,isr_mpr ; YES - add current_speed_eco to isr_mpr | |
| 582 | 731 bra isr_battery_gauge5 |
| 0 | 732 isr_battery_gauge3: |
| 623 | 733 btfss speed_is_normal ; speed = normal? |
| 734 bra isr_battery_gauge4 ; NO | |
| 735 ADDLI current_speed_normal,isr_mpr ; YES - add current_speed_normal to isr_mpr | |
| 582 | 736 bra isr_battery_gauge5 |
| 0 | 737 isr_battery_gauge4: |
| 623 | 738 ADDLI current_speed_fastest,isr_mpr ; speed is fastest, add current_speed_fastest to isr_mpr |
| 0 | 739 isr_battery_gauge5: |
| 623 | 740 btfss ir_power ; IR enabled? |
| 741 bra isr_battery_gauge6 ; NO | |
| 742 ADDLI current_ir_receiver,isr_mpr ; YES - add current_ir_receiver to isr_mpr | |
| 0 | 743 isr_battery_gauge6: |
| 623 | 744 btfss compass_enabled ; compass active? |
| 745 bra isr_battery_gauge7 ; NO | |
| 746 ADDLI current_compass,isr_mpr ; YES - add current_compass to isr_mpr | |
| 0 | 747 isr_battery_gauge7: |
| 582 | 748 return |
| 0 | 749 |
| 623 | 750 |
| 751 ;============================================================================= | |
| 752 ; Every second tasks while in dive mode | |
| 753 ; | |
| 0 | 754 isr_divemode_1sec: |
| 623 | 755 decfsz sampling_timer,F ; decrement sampling timer, became zero? |
| 756 bra isr_divemode_1sec_1 ; NO | |
| 757 bsf trigger_sample_divedata ; YES - set trigger flag for sampling dive data | |
| 758 movff sampling_rate,sampling_timer; - reload timer | |
| 0 | 759 |
| 623 | 760 isr_divemode_1sec_1: |
| 761 btfss reset_timebase ; shall reset the timebase? (request flag will be cleared later) | |
| 762 bra isr_divemode_1sec_2 ; NO | |
| 763 CLRI total_divetime_secs ; YES - reset total dive time, seconds (2 byte) | |
| 764 clrf counted_divetime_secs ; - reset counted dive time, seconds (1 byte) | |
| 765 CLRI counted_divetime_mins ; - reset counted dive time, minutes (2 byte) | |
| 766 clrf apnoe_dive_secs ; - reset apnoe dive time, seconds (1 byte) | |
| 767 clrf apnoe_dive_mins ; - reset apnoe dive time, minutes (1 byte) | |
| 768 bcf apnoe_at_surface ; - apnoe mode starts in submerged state | |
| 769 return ; - done | |
| 582 | 770 |
| 623 | 771 isr_divemode_1sec_2: |
| 772 INCI total_divetime_secs ; increase total dive time (regardless of start_dive_threshold) | |
| 773 btfss count_divetime ; shall the dive time be counted (regarding start_dive_threshold)? | |
| 629 | 774 bra isr_divemode_1sec_4 ; NO - too shallow / apnoe at surface |
| 623 | 775 incf counted_divetime_secs,F ; YES - increase dive time (displayed dive time) |
| 776 movlw d'59' ; - 60 seconds make a minute | |
| 777 cpfsgt counted_divetime_secs ; - next full minute reached? | |
| 629 | 778 bra isr_divemode_1sec_3 ; NO - continue |
| 623 | 779 clrf counted_divetime_secs ; YES - reset seconds to 0 |
| 780 INCI counted_divetime_mins ; - increase dive minutes | |
| 781 bsf divetime_longer_1min ; - set flag for dive time exceeding 1 minute | |
| 629 | 782 ;bra isr_divemode_1sec_3 ; - continue |
| 0 | 783 |
| 623 | 784 isr_divemode_1sec_3: ; submerged |
| 785 btfss FLAG_apnoe_mode ; in apnoe mode? | |
| 786 return ; NO - done | |
| 787 btfss apnoe_at_surface ; - been at surface before? | |
| 788 bra isr_divemode_1sec_3a ; NO - increment the dive time | |
| 789 bcf apnoe_at_surface ; YES - a new dive has begun | |
| 790 bsf apnoe_new_dive ; - signal a new dive has begun | |
| 791 clrf apnoe_surface_secs ; - clear surface seconds | |
| 792 clrf apnoe_surface_mins ; - clear surface minutes | |
| 793 clrf apnoe_dive_secs ; - clear dive seconds | |
| 794 clrf apnoe_dive_mins ; - clear dive minutes | |
| 795 MOVII pressure_rel_cur,pressure_rel_max ; - reset max pressure to current pressure | |
| 796 bsf trigger_pres_max_changed ; - signal a new maximum pressure | |
| 797 isr_divemode_1sec_3a: | |
| 798 incf apnoe_dive_secs,F ; increment dive time, seconds | |
| 799 movlw d'59' ; 60 seconds make a minute | |
| 800 cpfsgt apnoe_dive_secs ; next full minute reached? | |
| 801 return ; NO - done | |
| 802 clrf apnoe_dive_secs ; YES - reset seconds to 0 | |
| 803 incf apnoe_dive_mins,F ; - increment dive time, minutes | |
| 804 return ; - done | |
| 0 | 805 |
| 623 | 806 isr_divemode_1sec_4: ; at surface |
| 807 btfss FLAG_apnoe_mode ; in apnoe mode? | |
| 808 return ; NO - done | |
| 809 bsf apnoe_at_surface ; YES - memorize been at the surface | |
| 810 incf apnoe_surface_secs,F ; - increment surface time, seconds | |
| 811 movlw d'59' ; - 60 seconds make a minute | |
| 812 cpfsgt apnoe_surface_secs ; - next full minute reached? | |
| 813 return ; NO - done | |
| 814 clrf apnoe_surface_secs ; YES - reset seconds to 0 | |
| 815 incf apnoe_surface_mins,F ; - increment surface time, minutes | |
| 816 return ; - done | |
| 817 | |
| 818 | |
| 819 ;============================================================================= | |
| 820 ; BCD to Binary conversion | |
| 821 ; Input WREG = value in BCD | |
| 822 ; Output WREG = value in binary | |
| 823 ; | |
| 824 isr_rtcc_convert_BCD_DEC: | |
| 825 movwf isr_lo | |
| 826 swapf isr_lo, W | |
| 827 andlw 0x0F ; W = tens | |
| 828 rlncf WREG, W ; W = 2 * tens | |
| 829 subwf isr_lo, F ; 16 * tens + ones - 2*tens | |
| 830 subwf isr_lo, F ; 14 * tens + ones - 2*tens | |
| 831 subwf isr_lo, W ; 12 * tens + ones - 2*tens | |
| 582 | 832 return |
| 0 | 833 |
| 834 | |
| 835 ;============================================================================= | |
| 623 | 836 ; Check buttons |
| 837 ; | |
| 582 | 838 isr_switch_right: |
| 604 | 839 bcf INTCON,INT0IE ; disable INT0 |
| 582 | 840 btfss flip_screen ; 180° flipped? |
| 604 | 841 bsf switch_right ; set flag |
| 582 | 842 btfsc flip_screen ; 180° flipped? |
| 604 | 843 bsf switch_left ; set flag |
| 844 bra isr_switch_common ; continue... | |
| 0 | 845 |
| 582 | 846 isr_switch_left: |
| 604 | 847 bcf INTCON3,INT1IE ; disable INT1 |
| 582 | 848 btfss flip_screen ; 180° flipped? |
| 604 | 849 bsf switch_left ; set flag |
| 582 | 850 btfsc flip_screen ; 180° flipped? |
| 604 | 851 bsf switch_right ; set flag |
| 623 | 852 ;bra isr_switch_common ; continue... |
| 853 | |
| 0 | 854 isr_switch_common: |
| 623 | 855 clrf TMR1L ; load timer1 for first press |
| 604 | 856 movlw TMR1H_VALUE_FIRST ; in steps of 7.8125 ms |
| 623 | 857 movwf TMR1H ; ... |
| 604 | 858 bsf T1CON,TMR1ON ; start timer 1 |
| 859 bcf INTCON3,INT1IF ; clear flag | |
| 860 bcf INTCON,INT0IF ; clear flag | |
| 582 | 861 return |
| 0 | 862 |
| 623 | 863 |
| 864 ;============================================================================= | |
| 865 ; Button hold-down interrupt | |
| 866 ; | |
| 0 | 867 timer1int: |
| 604 | 868 bcf PIR1,TMR1IF ; clear flag |
| 869 bcf INTCON,INT0IF ; clear flag | |
| 870 bcf INTCON3,INT1IF ; clear flag | |
| 451 | 871 ; digital |
| 604 | 872 btfss switch_left1 ; left button hold-down? |
| 873 bra timer1int_left ; YES | |
| 874 btfss switch_right2 ; right button hold-down? | |
| 875 bra timer1int_right ; YES | |
| 582 | 876 |
| 623 | 877 ; analog |
| 604 | 878 btfsc analog_sw2_pressed ; left button hold-down? |
| 879 bra timer1int_left ; YES | |
| 880 btfsc analog_sw1_pressed ; right button hold-down? | |
| 881 bra timer1int_right ; YES | |
| 582 | 882 |
| 623 | 883 ; no button hold-down, stop Timer 1 |
| 604 | 884 bcf T1CON,TMR1ON ; stop timer 1 |
| 885 bsf INTCON,INT0IE ; enable INT0 | |
| 886 bsf INTCON3,INT1IE ; enable INT1 | |
| 451 | 887 return |
| 0 | 888 |
| 889 timer1int_left: | |
| 582 | 890 btfss flip_screen ; 180° flipped? |
| 604 | 891 bsf switch_left ; (re-)set flag |
| 582 | 892 btfsc flip_screen ; 180° flipped? |
| 604 | 893 bsf switch_right ; (re-)set flag |
| 894 bra timer1int_common ; continue | |
| 623 | 895 |
| 0 | 896 timer1int_right: |
| 582 | 897 btfss flip_screen ; 180° flipped? |
| 604 | 898 bsf switch_right ; set flag |
| 582 | 899 btfsc flip_screen ; 180° flipped? |
| 623 | 900 bsf switch_left ; (re-)set flag |
| 901 ;bra timer1int_common ; continue | |
| 902 | |
| 903 timer1int_common: ; load timer1 for next pressure | |
| 904 clrf TMR1L ; clear timer, low byte | |
| 905 movlw TMR1H_VALUE_CONT ; default to surface mode value | |
| 906 btfsc divemode ; in dive mode? | |
| 907 movlw TMR1H_VALUE_CONT_DIVE ; YES - overwrite with dive mode value | |
| 908 movwf TMR1H ; write value to timer, high byte | |
| 604 | 909 return ; return from timer1int with timer1 kept running |
| 0 | 910 |
| 623 | 911 |
| 0 | 912 ;============================================================================= |
| 629 | 913 ; Increment surface interval (counted in minutes and in seconds) |
| 623 | 914 ; |
| 915 ; int_O_desaturation_time is only computed while in start, surface mode, | |
| 629 | 916 ; menue_tree or ghostwriter. So the ISR may clock surface_interval_mins |
| 917 ; past the actual surface interval time. But TFT_surface_lastdive will | |
| 918 ; check int_O_desaturation_time and in case int_O_desaturation_time is | |
| 919 ; zero it will not show surface_interval_mins but surface_interval_secs instead. | |
| 920 ; Thus the glitch will remain invisible. | |
| 623 | 921 ; |
| 629 | 922 |
| 923 inc_surface_interval_secs: ; called every second when not in dive mode | |
| 924 incf surface_interval_secs+0,F ; increment the lowest byte | |
| 925 clrf WREG ; clear WREG | |
| 926 addwfc surface_interval_secs+1,F ; add carry from byte before, if it did wrap-around | |
| 927 addwfc surface_interval_secs+2,F ; add carry from byte before, if it did wrap-around | |
| 928 addwfc surface_interval_secs+3,F ; add carry from byte before, if it did wrap-around | |
| 623 | 929 return ; done |
| 0 | 930 |
| 629 | 931 inc_surface_interval_mins: ; called every minute when not in dive mode |
| 932 movff int_O_desaturation_time+0,isr_lo ; get desaturation time, low byte | |
| 933 movff int_O_desaturation_time+1,WREG ; get desaturation time, high byte | |
| 934 iorwf isr_lo,W ; inclusive-or low & high byte, desaturation time = 0 ? | |
| 935 bz clr_surface_interval_mins ; YES - reset surface interval minutes counter | |
| 936 INCI surface_interval_mins ; NO - increment surface interval | |
| 937 return ; - done | |
| 938 | |
| 939 clr_surface_interval: | |
| 940 bcf reset_surface_interval ; reset request flag | |
| 941 ; clear the surface interval counted in seconds | |
| 942 clrf surface_interval_secs+0 ; reset surface interval (seconds), lowest byte | |
| 943 clrf surface_interval_secs+1 ; ... | |
| 944 clrf surface_interval_secs+2 ; ... | |
| 945 clrf surface_interval_secs+3 ; reset surface interval (seconds), highest byte | |
| 946 clr_surface_interval_mins: | |
| 947 ; clear the surface interval counted in minutes | |
| 948 movff opt_diveTimeout,surface_interval_mins+0 ; set surface interval (minutes), low byte, to dive timeout offset | |
| 949 clrf surface_interval_mins+1 ; reset surface interval (minutes), high byte | |
| 950 | |
| 951 return ; done | |
| 952 | |
| 0 | 953 ;============================================================================= |
| 954 | |
| 582 | 955 END |