Mercurial > public > hwos_code
annotate src/isr.asm @ 628:cd58f7fc86db
3.05 stable work
| author | heinrichsweikamp |
|---|---|
| date | Thu, 19 Sep 2019 12:01:29 +0200 |
| parents | c40025d8e750 |
| children | 237931377539 |
| rev | line source |
|---|---|
| 0 | 1 ;============================================================================= |
| 2 ; | |
| 628 | 3 ; File isr.asm combined next generation V3.03.7 |
| 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 | |
| 42 rcall isr_registers_backup ; back-up registers | |
| 43 ; serve buttons | |
| 44 btfsc PIR1,TMR1IF ; timer 1 interrupt (button hold-down timer)? | |
| 45 rcall timer1int ; YES - reset timer | |
| 46 btfsc INTCON,INT0IF ; right button activity? | |
| 47 rcall isr_switch_right ; YES - check right switch | |
| 48 btfsc INTCON3,INT1IF ; left button activity? | |
| 49 rcall isr_switch_left ; YES - check left switch | |
| 0 | 50 |
| 623 | 51 IFDEF _external_sensor |
| 52 ; serve IR/S8 link timer | |
| 53 btfsc PIR3,RC2IF ; UART 2 interrupt? | |
| 54 rcall isr_uart2 ; YES - get a byte from the IR/S8 link | |
| 55 btfsc PIR2,TMR3IF ; timer 3 interrupt? | |
| 56 rcall isr_timer3 ; YES - check bytes received from IR/S8 link for being a valid telegram | |
| 628 | 57 ELSE |
| 58 bcf PIR3,RC2IF ; Clear UART 2 interrupt? | |
| 59 bcf PIR2,TMR3IF ; Clear timer 3 interrupt? | |
| 623 | 60 ENDIF |
| 61 | |
| 62 ; serve pressure and temperature sensor | |
| 63 btfsc PIR5,TMR7IF ; timer 7 interrupt? | |
| 64 rcall isr_tmr7 ; YES - do every 62.5 ms tasks: read sensors, set CPU speed | |
| 65 | |
| 66 ; serve real-time clock (RTCC) | |
| 67 btfsc PIR3,RTCCIF ; real-time-clock interrupt? | |
| 68 rcall isr_rtcc ; YES - do every 1/2 s tasks: read RTC, trigger timed tasks, adjust CPU speed, gauge battery, etc. | |
| 113 | 69 |
| 623 | 70 ; clean up and exit |
| 71 rcall isr_registers_restore ; restore registers | |
| 72 bsf trigger_isr_updates ; signal that the ISR had kicked in | |
| 73 retfie FAST ; return from interrupt restoring BSR, STATUS and WREG | |
| 74 | |
| 113 | 75 |
| 623 | 76 ;============================================================================= |
| 77 ; CPU speed adjustment | |
| 78 ; | |
| 79 isr_adjust_speed: | |
| 80 movff cpu_speed_request,cpu_speed_state ; acknowledge CPU speed request | |
| 0 | 81 |
| 623 | 82 btfsc speed_is_eco ; speed 'eco' requested? |
| 83 bra isr_set_speed_to_eco ; YES - set eco speed | |
| 84 btfsc speed_is_fastest ; NO - speed 'fastest' requested? | |
| 85 bra isr_set_speed_to_fastest ; YES - set fastest speed | |
| 86 ;bra isr_set_speed_to_normal ; NO - default to normal speed | |
| 0 | 87 |
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changeset
|
88 isr_set_speed_to_normal: |
| 623 | 89 movlw b'00000000' ; coding for x4 PLL disabled |
| 90 movwf OSCTUNE ; switch off x4 PLL | |
| 91 movlw b'01110010' ; select 16 MHz | |
| 92 movwf OSCCON ; set prescaler | |
| 93 movlw T2CON_NORMAL ; PWM1 dimming factor for speed 'normal' | |
| 94 movwf T2CON ; adjust PWM1 for LED dimming | |
| 95 bra isr_adjust_speed_exit | |
| 96 | |
| 97 isr_set_speed_to_eco: | |
| 98 movlw b'00000000' ; coding for x4 PLL disabled | |
| 99 movwf OSCTUNE ; switch off x4 PLL | |
| 100 movlw b'00110010' ; select 1 MHz | |
| 101 movwf OSCCON ; set prescaler | |
| 102 movlw T2CON_ECO ; PWM1 dimming factor for speed 'eco' | |
| 103 movwf T2CON ; adjust PWM1 for LED dimming | |
| 104 bra isr_adjust_speed_exit | |
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changeset
|
105 |
| 623 | 106 isr_set_speed_to_fastest: |
| 107 movlw b'01110010' ; select 16 MHz by default | |
| 108 btfsc lv_core ; on OSTC with low voltage core? | |
| 109 movlw b'01100010' ; YES - reduce to 8 MHz | |
| 110 movwf OSCCON ; set prescaler | |
| 111 movlw b'01000000' ; coding for x4 PLL enable | |
| 112 movwf OSCTUNE ; switch on x4 PLL -> 64 MHz on high voltage core, 32 MHz on low voltage core | |
| 113 movlw T2CON_FASTEST ; PWM1 dimming factor for speed 'fastest' | |
| 114 movwf T2CON ; adjust PWM1 for LED dimming | |
| 115 ;bra isr_adjust_speed_exit | |
| 116 | |
| 117 isr_adjust_speed_exit: | |
| 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 !! | |
| 582 | 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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changeset
|
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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changeset
|
134 |
| 0 | 135 |
| 623 | 136 ;============================================================================= |
| 137 ; back-up and restore registers | |
| 138 ; | |
| 139 isr_registers_backup: | |
| 140 MOVII PRODL,PROD_backup ; back-up PRODH:PRODL | |
| 141 return | |
| 113 | 142 |
| 623 | 143 isr_registers_restore: |
| 144 MOVII PROD_backup,PRODL ; restore PRODH:PRODL | |
| 582 | 145 return |
| 0 | 146 |
| 623 | 147 |
| 148 ;============================================================================= | |
| 149 ; routines for handling digital-attached external sensors | |
| 150 ; | |
| 151 IFDEF _external_sensor | |
| 152 | |
| 153 ; Take a byte received on IR/S8 link and slot it into the RX buffer | |
| 154 ; | |
| 155 isr_uart2: | |
| 628 | 156 bcf PIR3,RC2IF ; Clear UART 2 interrupt flag |
| 623 | 157 banksel RCREG2 ; RC*2 is outside access RAM |
| 158 movff RCREG2,isr_lo ; copy received byte to isr_lo | |
| 159 bcf RCSTA2,CREN ; clear receiver status | |
| 160 bsf RCSTA2,CREN ; ... | |
| 161 banksel isr_backup ; back to default ISR bank | |
| 162 movlw .18 ; size of the buffer | |
| 163 cpfslt ir_s8_counter ; number of received bytes < buffer size? | |
| 164 bra isr_uart2_1 ; NO - buffer full, do not store the byte | |
| 165 movf ir_s8_counter,W ; YES - copy number of received bytes to WREG | |
| 166 MOVII FSR0L,FSR0_backup ; - back-up FSR0 | |
| 167 lfsr FSR0,ir_s8_buffer ; - load base address of buffer | |
| 168 movff isr_lo,PLUSW0 ; - store received byte | |
| 169 MOVII FSR0_backup,FSR0L ; - restore FSR0 | |
| 170 incf ir_s8_counter,F ; - increment number of received bytes by 1 | |
| 171 isr_uart2_1: | |
| 172 clrf TMR3L ; reload timer 3 | |
| 173 movlw .253 ; ... | |
| 174 movwf TMR3H ; ... | |
| 175 bsf T3CON,TMR3ON ; (re)start timeout timer 3 | |
| 176 return | |
| 177 | |
| 178 | |
| 179 ; Timeout on IR/S8 link: check the checksum and gather the received data | |
| 180 ; | |
| 181 isr_timer3: | |
| 604 | 182 bcf T3CON,TMR3ON ; stop timer 3 |
| 582 | 183 movlw .15 |
| 604 | 184 cpfseq ir_s8_counter ; got exactly 15 bytes? |
| 623 | 185 bra isr_timer3_1 ; NO - test for 16 bytes |
| 604 | 186 bra isr_timer3_ir ; YES - got 15 bytes, compute local checksum |
| 0 | 187 isr_timer3_1: |
| 582 | 188 movlw .16 |
| 604 | 189 cpfseq ir_s8_counter ; got exactly 16 bytes? |
| 623 | 190 bra isr_timer3_2 ; NO - test for 17 bytes |
| 604 | 191 tstfsz ir_s8_buffer+.15 ; YES - last byte = 0x00 ? |
| 192 bra isr_timer3_exit ; No - exit | |
| 193 bra isr_timer3_ir ; YES - got 16 bytes, compute local checksum | |
| 113 | 194 isr_timer3_2: |
| 582 | 195 movlw .17 |
| 604 | 196 cpfseq ir_s8_counter ; got exactly 17 bytes? |
| 197 bra isr_timer3_exit ; NO - exit | |
| 198 bra isr_timer3_s8 ; YES - S8 data | |
| 0 | 199 |
| 623 | 200 ; Process telegram received on IR link |
| 201 isr_timer3_ir: | |
| 202 movlw .12 ; checksum shall be computed for 1st and next 12 bytes | |
| 203 rcall compute_IR_S8_checksum ; compute checksum | |
| 204 movf ir_s8_buffer+.13,W ; get low byte of the received checksum | |
| 205 cpfseq isr_mpr+0 ; = low byte of the calculated local checksum? | |
| 206 bra isr_timer3_exit ; NO - exit | |
| 207 movf ir_s8_buffer+.14,W ; get high byte of the received checksum | |
| 208 cpfseq isr_mpr+1 ; = high byte of the calculated local checksum? | |
| 209 bra isr_timer3_exit ; NO - exit | |
| 210 ; YES to both - received telegram valid, copy data | |
| 0 | 211 |
| 623 | 212 movff ir_s8_buffer+.1, hud_status_byte |
| 213 movff ir_s8_buffer+.2, sensor1_mv+0 | |
| 214 movff ir_s8_buffer+.3, sensor1_mv+1 | |
| 215 movff ir_s8_buffer+.4, sensor2_mv+0 | |
| 216 movff ir_s8_buffer+.5, sensor2_mv+1 | |
| 217 movff ir_s8_buffer+.6, sensor3_mv+0 | |
| 218 movff ir_s8_buffer+.7, sensor3_mv+1 | |
| 219 movff ir_s8_buffer+.8, sensor1_ppO2 | |
| 220 movff ir_s8_buffer+.9, sensor2_ppO2 | |
| 221 movff ir_s8_buffer+.10,sensor3_ppO2 | |
| 582 | 222 movff ir_s8_buffer+.11,hud_battery_mv+0 |
| 223 movff ir_s8_buffer+.12,hud_battery_mv+1 | |
| 0 | 224 |
| 623 | 225 bsf hud_connection_ok ; set manually for hwHUD w/o the HUD module |
| 226 bra isr_timer3_reload ; reload timer and exit | |
| 227 | |
| 228 ; Process telegram received on S8 link | |
| 229 isr_timer3_s8: | |
| 230 movlw .14 ; checksum shall be computed for 1st and next 14 bytes | |
| 231 rcall compute_IR_S8_checksum ; compute checksum | |
| 232 | |
| 233 movf ir_s8_buffer+.15,W ; get low byte of the received checksum | |
| 234 cpfseq isr_mpr+0 ; = low byte of the calculated local checksum? | |
| 235 bra isr_timer3_exit ; NO - exit | |
| 236 movf ir_s8_buffer+.16,W ; get high byte of the received checksum | |
| 237 cpfseq isr_mpr+1 ; = high byte of the calculated local checksum? | |
| 238 bra isr_timer3_exit ; NO - exit | |
| 239 ; YES to both - received telegram valid, copy data | |
| 240 movff ir_s8_buffer+.3, hud_status_byte | |
| 241 movff ir_s8_buffer+.13,hud_battery_mv+0 | |
| 242 movff ir_s8_buffer+.14,hud_battery_mv+1 | |
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243 |
| 623 | 244 btfsc trigger_S8_data_update ; last data already processed? |
| 628 | 245 bra isr_timer3_exit ; NO - skip copying new results (And not reload the timeout) |
| 623 | 246 bsf trigger_S8_data_update ; YES - set flag for new data available |
| 582 | 247 |
| 628 | 248 ; - copy more data |
| 623 | 249 movff ir_s8_buffer+.4, s8_rawdata_sensor1+0 |
| 250 movff ir_s8_buffer+.5, s8_rawdata_sensor1+1 | |
| 251 movff ir_s8_buffer+.6, s8_rawdata_sensor1+2 | |
| 252 movff ir_s8_buffer+.7, s8_rawdata_sensor2+0 | |
| 253 movff ir_s8_buffer+.8, s8_rawdata_sensor2+1 | |
| 254 movff ir_s8_buffer+.9, s8_rawdata_sensor2+2 | |
| 255 movff ir_s8_buffer+.10,s8_rawdata_sensor3+0 | |
| 256 movff ir_s8_buffer+.11,s8_rawdata_sensor3+1 | |
| 257 movff ir_s8_buffer+.12,s8_rawdata_sensor3+2 | |
| 258 | |
| 259 isr_timer3_reload: | |
| 260 movlw ir_timeout_value ; in multiples of 62.5 ms | |
| 261 movwf ir_s8_timeout ; reload timeout | |
| 0 | 262 isr_timer3_exit: |
| 604 | 263 clrf ir_s8_counter ; clear pointer |
| 264 bcf PIR2,TMR3IF ; clear flag | |
| 582 | 265 return |
| 0 | 266 |
| 267 | |
| 623 | 268 ; compute checksum on data in RX buffer |
| 269 ; | |
| 270 compute_IR_S8_checksum: | |
| 271 movwf ir_s8_counter ; initialize loop counter from WREG | |
| 272 movff ir_s8_buffer+0,isr_mpr+0 ; initialize low byte of the local checksum with first byte in buffer | |
| 273 clrf isr_mpr+1 ; clear the high byte of the local checksum | |
| 274 lfsr FSR0,ir_s8_buffer ; load base address of the buffer | |
| 275 compute_IR_S8_checksum_loop: | |
| 276 movf PREINC0,W ; get next byte | |
| 277 addwf isr_mpr+0,F ; add it to the to checksum, low byte | |
| 278 movlw .0 ; no explicit data to add to the high byte... | |
| 279 addwfc isr_mpr+1,F ; ... besides the carry | |
| 280 decfsz ir_s8_counter ; decrement number of bytes yet to do, all done? | |
| 281 bra compute_IR_S8_checksum_loop ; NO - loop | |
| 282 return ; YES - done | |
| 113 | 283 |
| 623 | 284 ENDIF ; _external_sensor |
| 113 | 285 |
| 0 | 286 ;============================================================================= |
| 287 | |
| 623 | 288 ;============================================================================= |
| 289 ; Tasks every 62.5 ms: buttons, dimming, pressure/temp sensor and CPU speed | |
| 290 ; | |
| 291 isr_tmr7: | |
| 582 | 292 bcf PIR5,TMR7IF ; clear flag |
| 623 | 293 movlw .248 ; rollover after 248 cycles -> 62.5 ms |
| 294 movff WREG,TMR7H ; timer 7 is outside access RAM | |
| 0 | 295 |
| 623 | 296 call get_analog_switches ; get analog readings, CAUTION: returns in bank common |
| 297 banksel isr_backup ;back to ISR default bank | |
| 298 | |
| 448 | 299 btfss INTCON3,INT1IE |
| 582 | 300 bra isr_tmr7_a |
| 448 | 301 btfsc analog_sw2_pressed |
| 623 | 302 rcall isr_switch_left ; get digital readings of left switch |
| 448 | 303 isr_tmr7_a: |
| 304 btfss INTCON,INT0IE | |
| 582 | 305 bra isr_tmr7_b |
| 448 | 306 btfsc analog_sw1_pressed |
| 623 | 307 rcall isr_switch_right ; get digital readings of right switch |
| 448 | 308 isr_tmr7_b: |
| 623 | 309 btfss block_sensor_interrupt ; sensor interrupts disabled? |
| 604 | 310 bra isr_tmr7_c ; NO - continue |
| 623 | 311 return ; YES - done |
|
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312 isr_tmr7_c: |
| 623 | 313 movf max_CCPR1L,W ; dim value |
| 582 | 314 cpfseq CCPR1L ; = current PWM value? |
| 623 | 315 rcall isr_dimm_tft ; NO - adjust until max_CCPR1L = CCPR1L |
| 0 | 316 |
| 623 | 317 IFDEF _external_sensor |
| 318 decfsz ir_s8_timeout,F ; IR / S8 digital data still valid? | |
| 319 bra isr_tmr7_2 ; YES - continue | |
| 320 movlw ir_timeout_value ; NO - get timer reload in multiples of 62.5 ms | |
| 321 movwf ir_s8_timeout ; - reload the timer | |
| 322 btfss analog_o2_input ; - analog input available? | |
| 323 bra isr_tmr7_1a ; NO - clear data | |
| 324 btfss s8_digital_avail ; YES - S8 digital interface available? | |
| 325 bra isr_tmr7_2 ; NO - must be analog interface in use, keep data | |
| 113 | 326 isr_tmr7_1a: |
| 623 | 327 clrf hud_status_byte ; S8/IR timeout clears all analog input readings to zero -> fallback will be triggered when in sensor mode |
| 328 CLRI hud_battery_mv ; clear battery voltage | |
| 582 | 329 |
| 623 | 330 banksel sensor1_mv ; select bank where sensor data are stored |
| 331 CLRI sensor1_mv ; clear all sensor data | |
| 332 CLRI sensor2_mv ; ... | |
| 333 CLRI sensor3_mv ; ... | |
| 334 clrf sensor1_ppO2 ; ... | |
| 335 clrf sensor2_ppO2 ; ... | |
| 336 clrf sensor3_ppO2 ; ... | |
| 628 | 337 banksel s8_rawdata_sensor1 |
| 338 CLRI s8_rawdata_sensor1 ; clear all sensor data (raw data) | |
| 339 clrf s8_rawdata_sensor1+2 | |
| 340 CLRI s8_rawdata_sensor2 ; clear all sensor data (raw data) | |
| 341 clrf s8_rawdata_sensor2+2 | |
| 342 CLRI s8_rawdata_sensor3 ; clear all sensor data (raw data) | |
| 343 clrf s8_rawdata_sensor3+2 | |
| 623 | 344 banksel isr_backup ; back to ISR default bank |
| 345 | |
| 346 bsf trigger_S8_data_update ; signal a data update | |
| 347 ENDIF | |
| 582 | 348 |
| 0 | 349 isr_tmr7_2: |
| 623 | 350 btfsc block_sensor_interrupt ; sensor interrupts disabled? |
| 351 return ; YES - abort | |
| 0 | 352 |
| 353 isr_sensor_state2: | |
| 623 | 354 btfss sensor_state_counter,0 ; every 1/4 second |
| 355 bsf trigger_quarter_second ; set flag | |
| 356 | |
| 357 btfss speed_is_normal ; CPU running on normal speed? | |
| 358 rcall isr_set_speed_to_normal ; NO - set CPU speed to normal | |
| 582 | 359 |
| 623 | 360 ; update surface pressure |
| 361 btfss update_surface_pressure ; shall update the surface pressure? | |
| 362 bra isr_sensor_state2_1 ; NO | |
| 363 bcf update_surface_pressure ; YES - clear request flag | |
| 364 MOVII pressure_abs_ref,pressure_surf ; - update surface pressure | |
| 365 | |
| 366 isr_sensor_state2_1: | |
| 367 incf sensor_state_counter,F ; counts to eight for state machine | |
| 0 | 368 |
| 623 | 369 ; State 1: clear flags and average registers, get temperature (51 us) and start pressure integration (73.5 us) |
| 370 ; State 2: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 371 ; State 3: get temperature (51 us) and start pressure integration (73.5 us) | |
| 372 ; State 4: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 373 ; State 5: get temperature (51 us) and start pressure integration (73.5 us) | |
| 374 ; State 6: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 375 ; State 7: get temperature (51 us) and start pressure integration (73.5 us) | |
| 376 ; 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 | 377 |
| 623 | 378 movff sensor_state_counter,WREG ; WREG used as temp here... |
| 582 | 379 dcfsnz WREG,F |
| 623 | 380 bra sensor_int_state1_plus_restart ; do state 1 |
| 582 | 381 dcfsnz WREG,F |
| 623 | 382 bra sensor_int_state2 ; do state 2 |
| 582 | 383 dcfsnz WREG,F |
| 623 | 384 bra sensor_int_state1 ; do state 3 |
| 582 | 385 dcfsnz WREG,F |
| 623 | 386 bra sensor_int_state2 ; do state 4 |
| 582 | 387 dcfsnz WREG,F |
| 623 | 388 bra sensor_int_state1 ; do state 5 |
| 582 | 389 dcfsnz WREG,F |
| 623 | 390 bra sensor_int_state2 ; do state 6 |
| 582 | 391 dcfsnz WREG,F |
| 623 | 392 bra sensor_int_state1 ; do state 7 |
| 393 | |
| 394 ; first, do state 2: | |
| 395 call get_pressure_value ; state 2: get pressure (51 us) | |
| 396 call get_temperature_start ; and start temperature integration (73.5 us) | |
| 397 call calculate_compensation ; calculate temperature compensated pressure (27 us) | |
| 0 | 398 |
| 623 | 399 ; build average for pressure |
| 400 bcf STATUS,C ; clear carry bit | |
| 401 rrcf pressure_abs_avg+1 ; divide by 2 | |
| 402 rrcf pressure_abs_avg+0 | |
| 403 bcf STATUS,C ; clear carry bit | |
| 404 rrcf pressure_abs_avg+1 ; divide by 2, again | |
| 405 rrcf pressure_abs_avg+0 | |
| 406 | |
| 407 ; copy into result register | |
| 408 MOVII pressure_abs_avg,pressure_abs | |
| 0 | 409 |
| 623 | 410 ; build average for temperature |
| 411 bcf STATUS,C ; clear carry bit by default | |
| 412 btfsc temperature_avg+1,7 ; sign bit set? | |
| 413 bsf STATUS,C ; YES - copy sign bit to carry bit | |
| 414 rrcf temperature_avg+1 ; divide signed temperature by 2 | |
| 415 rrcf temperature_avg+0 ; ... | |
| 416 bcf STATUS,C ; clear carry bit by default | |
| 417 btfsc temperature_avg+1,7 ; sign bit set? | |
| 418 bsf STATUS,C ; YES - copy sign bit to carry bit | |
| 419 rrcf temperature_avg+1 ; divide signed temperature by 2 again (by 4 in total now) | |
| 420 rrcf temperature_avg+0 ; ... | |
| 421 MOVII temperature_avg,temperature_cur ; store final result | |
| 0 | 422 |
| 623 | 423 ; check for temperature change |
| 424 movf temperature_cur+0,W ; get current temperature, low byte | |
| 425 cpfseq temperature_last+0 ; compare with last temperature, equal? | |
| 426 bra isr_sensor_state2_2 ; NO - temperature has changed | |
| 427 movf temperature_cur+1,W ; get current temperature, high byte | |
| 428 cpfseq temperature_last+1 ; compare with last temperature, equal? | |
| 429 bra isr_sensor_state2_2 ; NO - temperature has changed | |
| 430 bra isr_sensor_state2_3 ; YES to both - no change | |
| 0 | 431 |
| 432 isr_sensor_state2_2: | |
| 623 | 433 MOVII temperature_cur,temperature_last ; store current temperature as last temperature for next round |
| 434 bsf trigger_temp_changed ; set flag for temperature change | |
| 435 | |
| 0 | 436 isr_sensor_state2_3: |
| 623 | 437 ; reset state counter and set update flag |
| 438 clrf sensor_state_counter ; reset state counter | |
| 628 | 439 ; bsf trigger_pres_update ; signal a pressure update |
| 623 | 440 btfss reset_max_pressure ; shall clear the max pressure? |
| 441 bra isr_sensor_state2_3a ; NO - continue with checking for pressure change | |
| 442 bcf reset_max_pressure ; YES - clear request flag | |
| 443 CLRI pressure_rel_max ; - clear max. pressure | |
| 0 | 444 |
| 623 | 445 isr_sensor_state2_3a: |
| 446 ; check for pressure change | |
| 447 movf pressure_abs+0,W ; get current pressure, low byte | |
| 448 cpfseq pressure_abs_last+0 ; compare with last pressure, equal? | |
| 449 bra isr_sensor_state2_4 ; NO - pressure has changed | |
| 450 movf pressure_abs+1,W ; YES - get current pressure, high byte | |
| 451 cpfseq pressure_abs_last+1 ; - compare with last pressure, equal? | |
| 452 bra isr_sensor_state2_4 ; NO - pressure has changed | |
| 453 bra isr_sensor_state2_5 ; YES - no change | |
| 454 | |
| 455 isr_sensor_state2_4: | |
| 456 MOVII pressure_abs,pressure_abs_last ; store current pressure as last pressure for next round | |
| 457 bsf trigger_pres_cur_changed ; signal a pressure change | |
| 458 | |
| 459 isr_sensor_state2_5: | |
| 460 ; compute relative pressure | |
| 461 movf pressure_surf+0,W ; get surface pressure, low byte | |
| 462 subwf pressure_abs+0,W ; WREG = pressure_abs - pressure_surf (low byte) | |
| 463 movwf pressure_rel_cur+0 ; store relative pressure, low byte | |
| 464 movf pressure_surf+1,W ; get surface pressure, high byte | |
| 465 subwfb pressure_abs+1,W ; WREG = pressure_abs - pressure_surf (high byte) | |
| 466 movwf pressure_rel_cur+1 ; store relative pressure, high byte | |
| 467 btfss STATUS,N ; relative pressure < 0 ? | |
| 468 bra isr_sensor_state2_6 ; NO - OK, keep result | |
| 469 CLRI pressure_rel_cur ; YES - set relative pressure to zero | |
| 0 | 470 |
| 623 | 471 isr_sensor_state2_6: |
| 472 ; check for new max relative pressure | |
| 473 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 474 subwf pressure_rel_max+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
| 475 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 476 subwfb pressure_rel_max+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
| 477 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
| 478 bra isr_sensor_state2_6a ; NO | |
| 479 MOVII pressure_rel_cur,pressure_rel_max ; YES - set new max rel pressure | |
| 480 bsf trigger_pres_max_changed ; - signal a pressure max change | |
| 481 | |
| 482 isr_sensor_state2_6a: | |
| 0 | 483 |
| 623 | 484 IFDEF _min_depth_option |
| 485 ; check if min/max pressures shall be reset | |
| 486 btfss reset_trip_pressure ; shall reset the resettable min/max pressures? | |
| 487 bra isr_sensor_state2_6b ; NO | |
| 488 bcf reset_trip_pressure ; YES - clear request flag | |
| 489 CLRI pressure_rel_max_trip ; - set max pressure to zero | |
| 490 SETI pressure_rel_min_trip ; - set min pressure to biggest value possible | |
| 491 isr_sensor_state2_6b: | |
| 492 ; check for new resettable max relative pressure | |
| 493 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 494 subwf pressure_rel_max_trip+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
| 495 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 496 subwfb pressure_rel_max_trip+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
| 497 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
| 498 bra isr_sensor_state2_6c ; NO - continue checking for min depth | |
| 499 MOVII pressure_rel_cur,pressure_rel_max_trip ; YES - set new max rel pressure | |
| 500 isr_sensor_state2_6c: | |
| 501 ; check for new resettable min relative pressure | |
| 502 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 503 subwf pressure_rel_min_trip+0,W ; WREG = pressure_rel_min - pressure_rel_cur (low byte) | |
| 504 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 505 subwfb pressure_rel_min_trip+1,W ; WREG = pressure_rel_min - pressure_rel_cur (high byte) | |
| 506 btfss STATUS,C ; result > 0, i.e. new min rel pressure? | |
| 507 bra sensor_int_state_exit ; NO - done | |
| 508 MOVII pressure_rel_cur,pressure_rel_min_trip ; YES - set new min rel pressure | |
| 509 ENDIF ; _min_depth_option | |
| 510 bra sensor_int_state_exit ; done | |
| 0 | 511 |
| 512 | |
| 513 sensor_int_state1_plus_restart: | |
| 623 | 514 ; clear average registers |
| 515 CLRI pressure_abs_avg | |
| 516 CLRI temperature_avg | |
| 0 | 517 |
| 518 sensor_int_state1: | |
| 604 | 519 call get_temperature_value ; state 1: get temperature... |
| 520 call get_pressure_start ; ...and start pressure integration | |
| 582 | 521 bra sensor_int_state_exit |
| 0 | 522 |
| 523 sensor_int_state2: | |
| 604 | 524 call get_pressure_value ; state 2: get pressure (51 us)... |
| 525 call get_temperature_start ; ...and start temperature integration (73.5 us) | |
| 526 call calculate_compensation ; .. and calculate temperature compensated pressure (233 us) | |
| 582 | 527 |
| 0 | 528 sensor_int_state_exit: |
| 623 | 529 bra isr_adjust_speed ; set/restore CPU speed and return |
| 530 | |
| 531 | |
| 532 isr_dimm_tft: ; adjust until max_CCPR1L = CCPR1L | |
| 628 | 533 btfsc screen_type3 ; screen type 3 ? |
| 534 return ; YES - ignore, no dimming function with screen type 3 | |
| 623 | 535 btfsc tft_is_dimming ; is the display dimming? |
| 536 return ; YES - ignore | |
| 537 movf max_CCPR1L,W ; NO - proceed | |
| 628 | 538 cpfsgt CCPR1L ; - CCPR1L > max_CCPR1L ? |
| 539 bra isr_dimm_tft2 ; NO - dim up | |
| 540 decf CCPR1L,F ; YES - dim down | |
| 541 return ; - done | |
| 623 | 542 isr_dimm_tft2: |
| 628 | 543 movf max_CCPR1L,W ; |
| 544 sublw ambient_light_min_eco ; | |
| 623 | 545 cpfsgt CCPR1L ; CCPR1L > max_CCPR1L - ambient_light_min_eco ? |
| 546 bra isr_dimm_tft3 ; NO - dim up slow | |
| 628 | 547 movlw .10 ; YES - dim up faster (+10) |
| 548 addwf CCPR1L,F ; - add to dimming value | |
| 623 | 549 isr_dimm_tft3: |
| 628 | 550 incf CCPR1L,F ; - dim up (+1) |
| 551 return ; - done | |
| 623 | 552 |
| 582 | 553 |
| 0 | 554 ;============================================================================= |
| 623 | 555 ; RTC interrupt on every 1/2 second |
| 556 ; | |
| 557 isr_rtcc: | |
| 558 bcf PIR3,RTCCIF ; clear flag | |
| 559 bsf trigger_half_second ; set flag for a new 1/2 second has begun | |
| 560 btfsc reset_timebase ; shall reset the timebase? | |
| 561 bra isr_rtcc_1 ; YES - warp to new full second | |
| 562 btg timebase_0sec ; NO - toggle the 1/2 second timebase | |
| 563 btfsc timebase_0sec ; - did it toggled 1 -> 0 ? | |
| 564 return ; NO - on half second, done | |
| 0 | 565 |
| 623 | 566 isr_rtcc_1: |
| 567 ; new full second | |
| 568 bsf trigger_full_second ; set flag for a new 1/1 second has begun | |
| 569 | |
| 570 btfsc block_rtc_access ; ISR suspended from accessing the RTC? | |
| 571 bra isr_rtcc_2 ; YES | |
| 572 | |
| 573 banksel RTCCFG ; RTC registers are outside access RAM | |
| 582 | 574 bsf RTCCFG,RTCPTR1 |
| 623 | 575 bsf RTCCFG,RTCPTR0 |
| 576 banksel isr_backup ; back to ISR default bank | |
| 577 | |
| 578 movff RTCVALL,rtc_year ; read year in BCD | |
| 579 movff RTCVALH,rtc_day ; dummy read | |
| 580 movff RTCVALL,rtc_day ; read day in BCD | |
| 581 movff RTCVALH,rtc_month ; read month in BCD | |
| 582 movff RTCVALL,rtc_hour ; read hour in BCD | |
| 583 movff RTCVALH,rtc_secs ; dummy read | |
| 584 movff RTCVALL,rtc_secs ; read seconds in BCD | |
| 585 movff RTCVALH,rtc_mins ; read minutes in BCD | |
| 582 | 586 |
| 587 ; Convert BCD to DEC and set registers | |
| 623 | 588 movf rtc_mins,W |
| 589 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 590 movwf rtc_mins | |
| 591 movf rtc_secs,W | |
| 592 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 593 movwf rtc_secs | |
| 594 movf rtc_hour,W | |
| 595 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 596 movwf rtc_hour | |
| 597 movf rtc_month,W | |
| 598 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 599 movwf rtc_month | |
| 600 movf rtc_day,W | |
| 601 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 602 movwf rtc_day | |
| 603 movf rtc_year,W | |
| 604 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 605 movwf rtc_year | |
| 606 | |
| 607 isr_rtcc_2: | |
| 608 ; get ambient light level and set max_CCPR1L | |
| 609 call get_ambient_level ; get ambient light level and set max_CCPR1L | |
| 610 banksel isr_backup ; back to ISR default bank (for safety only) | |
| 611 | |
| 612 rcall isr_battery_gauge ; calculate the current charge consumption and add it to the battery gauge | |
| 613 rcall isr_update_uptime ; increment overall OSTC uptime | |
| 614 rcall isr_update_timeout ; process the timeout timer | |
| 615 | |
| 616 btfsc divemode ; in dive mode? | |
| 617 rcall isr_divemode_1sec ; YES - do the every second dive mode tasks | |
| 618 | |
| 619 btfsc divemode ; in dive mode? | |
| 620 btfsc simulatormode ; YES - in simulator mode? | |
| 621 rcall isr_update_lastdive_time ; NO - YES - increment the last dive time | |
| 0 | 622 |
| 623 | 623 ; reset the timebase if requested |
| 624 btfss reset_timebase ; shall reset the timebase? | |
| 625 bra isr_rtcc_3 ; NO | |
| 626 bcf reset_timebase ; YES - clear request flag | |
| 627 clrf eventbase ; - clear all pending events | |
| 628 clrf timebase ; - clear all timebase flags | |
| 629 clrf timebase_secs ; - clear seconds timer | |
| 630 clrf timebase_mins ; - clear minutes timer | |
| 631 clrf simulator_time ; - clear minutes timer of simulator runtime as well | |
| 632 bsf trigger_half_second ; - set flag for a new 1/2 second has begun | |
| 633 bsf trigger_full_second ; - set flag for a new 1/1 second has begun | |
| 634 return ; - done | |
| 635 | |
| 636 isr_rtcc_3: | |
| 637 ; count-up the 2 seconds timebase timer | |
| 638 btg timebase_1sec ; toggle the 1 second timer bit | |
| 639 btfss timebase_1sec ; did it toggled 1 -> 0 ? | |
| 640 btg timebase_2sec ; YES - toggle the 2 seconds timer bit | |
| 641 | |
| 642 ; count-up the seconds timer | |
| 643 incf timebase_secs,F ; increment seconds timer (may temporary become 60 here) | |
| 644 movlw .59 ; max. for seconds timer | |
| 645 cpfsgt timebase_secs ; seconds timer > max.? | |
| 646 return ; NO - done | |
| 0 | 647 |
| 623 | 648 ; new full minute |
| 649 clrf timebase_secs ; YES - reset timer | |
| 650 bsf trigger_full_minute ; - set flag for a new minute has begun | |
| 651 | |
| 652 btfsc divemode ; - in dive mode? | |
| 653 btfsc simulatormode ; YES - in simulator mode? | |
| 654 rcall inc_surface_interval ; NO - YES - increment surface interval | |
| 655 | |
| 656 btfss simulatormode ; - in simulator mode? | |
| 657 bra isr_rtcc_4 ; NO | |
| 658 infsnz simulator_time,F ; YES - increment real runtime of the simulator, did wrap around (became zero)? | |
| 659 setf simulator_time ; YES - disallow wrap-around, keep at 255 instead | |
| 0 | 660 |
| 623 | 661 isr_rtcc_4: |
| 662 incf timebase_mins,F ; - increment minutes timer | |
| 663 movlw .59 ; - max. for minutes timer | |
| 664 cpfsgt timebase_mins ; - minutes timer > max.? | |
| 665 return ; NO - done | |
| 666 | |
| 667 ; new full hour | |
| 668 clrf timebase_mins ; YES - reset timer | |
| 669 bsf trigger_full_hour ; - set flag for a new hour has begun | |
| 670 return ; - done | |
| 671 | |
| 672 | |
| 673 ; increment overall OSTC uptime | |
| 674 isr_update_uptime: | |
| 582 | 675 incf uptime+0,F |
| 623 | 676 clrf WREG |
| 582 | 677 addwfc uptime+1,F |
| 678 addwfc uptime+2,F | |
| 679 addwfc uptime+3,F | |
| 623 | 680 return |
| 0 | 681 |
| 623 | 682 ; increment time since last dive, called every second when not in dive mode (or when in simulator mode) |
| 683 isr_update_lastdive_time: | |
| 582 | 684 incf lastdive_time+0,F |
| 623 | 685 clrf WREG |
| 582 | 686 addwfc lastdive_time+1,F |
| 687 addwfc lastdive_time+2,F | |
| 688 addwfc lastdive_time+3,F | |
| 689 return | |
| 690 | |
| 623 | 691 ; process the timeout timer |
| 692 isr_update_timeout: | |
| 693 btfsc reset_timeout ; shall reset the timeout? | |
| 694 bra isr_update_timeout_1 ; YES | |
| 695 tstfsz isr_timeout_timer ; NO - timeout timer already at zero? | |
| 696 decfsz isr_timeout_timer ; NO - decrement timer, reached zero now? | |
| 697 return ; YES / NO - nothing further to do | |
| 698 bsf trigger_timeout ; YES - set timeout flag | |
| 699 return ; - done | |
| 700 isr_update_timeout_1: | |
| 701 bcf reset_timeout ; clear request flag | |
| 702 bcf trigger_timeout ; clear pending timeout trigger, if any | |
| 703 movff isr_timeout_reload,isr_timeout_timer ; reload timer | |
| 704 return ; done | |
| 0 | 705 |
| 623 | 706 ;============================================================================= |
| 707 ; Calculate charge drawn from the battery | |
| 708 ; | |
| 709 isr_battery_gauge: | |
| 710 btfsc block_battery_gauge ; access to battery gauge suspended? | |
| 711 return ; YES - done | |
| 712 MOVLI current_sleepmode,isr_mpr ; NO - default to sleep mode with 100µA/3600 -> nAs | |
| 713 btfss sleepmode ; - in sleep mode? | |
| 714 rcall isr_battery_gauge2 ; NO - compute current consumption value into isr_lo and isr_hi | |
| 715 movf isr_mpr+0,W ; - 48 bit add of isr_mpr:2 with battery_gauge:6 | |
| 582 | 716 addwf battery_gauge+0,F |
| 623 | 717 movf isr_mpr+1,W |
| 582 | 718 addwfc battery_gauge+1,F |
| 623 | 719 clrf WREG |
| 582 | 720 addwfc battery_gauge+2,F |
| 721 addwfc battery_gauge+3,F | |
| 722 addwfc battery_gauge+4,F | |
| 723 addwfc battery_gauge+5,F | |
| 724 return | |
| 725 | |
| 0 | 726 isr_battery_gauge2: |
| 623 | 727 ; set consumption rate in nAs - nano Ampere per second |
| 0 | 728 ; Example: |
| 623 | 729 ; MOVLI .55556,isr_mpr ; 0.2 Ah / 3600 seconds per hour * 1e9s = nAs |
| 730 ; | |
| 731 ; Remark: although all the constants are named current_xxxx, in reality they mean charge! | |
| 0 | 732 |
| 623 | 733 ; Calculate current consumption for LED backlight: 47*CCPR1L+272 (according to values in hwos.inc: 115*CCPR1L+216) |
| 734 movf CCPR1L,W ; get CCPR1L into WREG | |
| 735 mullw current_backlight_multi ; PRODH:PRODL = k * WREG = current_backlight_multi * CCPR1L | |
| 736 ADDLI current_backlight_offset,PRODL ; PRODH:PRODL += current_backlight_offset | |
| 737 MOVII PRODL,isr_mpr ; copy result to isr_mpr | |
| 0 | 738 |
| 623 | 739 ; Add current for CPU and GPU |
| 740 ; cpu_speed_state = ECO 3.10 mA -> 861 nAs | |
| 741 ; = NORMAL 5.50 mA -> 1528 nAs | |
| 742 ; = FASTEST 8.04 mA -> 2233 nAs | |
| 743 btfss speed_is_eco ; speed = eco ? | |
| 744 bra isr_battery_gauge3 ; NO | |
| 745 ADDLI current_speed_eco,isr_mpr ; YES - add current_speed_eco to isr_mpr | |
| 582 | 746 bra isr_battery_gauge5 |
| 0 | 747 isr_battery_gauge3: |
| 623 | 748 btfss speed_is_normal ; speed = normal? |
| 749 bra isr_battery_gauge4 ; NO | |
| 750 ADDLI current_speed_normal,isr_mpr ; YES - add current_speed_normal to isr_mpr | |
| 582 | 751 bra isr_battery_gauge5 |
| 0 | 752 isr_battery_gauge4: |
| 623 | 753 ADDLI current_speed_fastest,isr_mpr ; speed is fastest, add current_speed_fastest to isr_mpr |
| 0 | 754 isr_battery_gauge5: |
| 623 | 755 btfss ir_power ; IR enabled? |
| 756 bra isr_battery_gauge6 ; NO | |
| 757 ADDLI current_ir_receiver,isr_mpr ; YES - add current_ir_receiver to isr_mpr | |
| 0 | 758 isr_battery_gauge6: |
| 623 | 759 btfss compass_enabled ; compass active? |
| 760 bra isr_battery_gauge7 ; NO | |
| 761 ADDLI current_compass,isr_mpr ; YES - add current_compass to isr_mpr | |
| 0 | 762 isr_battery_gauge7: |
| 582 | 763 return |
| 0 | 764 |
| 623 | 765 |
| 766 ;============================================================================= | |
| 767 ; Every second tasks while in dive mode | |
| 768 ; | |
| 0 | 769 isr_divemode_1sec: |
| 623 | 770 decfsz sampling_timer,F ; decrement sampling timer, became zero? |
| 771 bra isr_divemode_1sec_1 ; NO | |
| 772 bsf trigger_sample_divedata ; YES - set trigger flag for sampling dive data | |
| 773 movff sampling_rate,sampling_timer; - reload timer | |
| 0 | 774 |
| 623 | 775 isr_divemode_1sec_1: |
| 776 btfss reset_timebase ; shall reset the timebase? (request flag will be cleared later) | |
| 777 bra isr_divemode_1sec_2 ; NO | |
| 778 CLRI total_divetime_secs ; YES - reset total dive time, seconds (2 byte) | |
| 779 clrf counted_divetime_secs ; - reset counted dive time, seconds (1 byte) | |
| 780 CLRI counted_divetime_mins ; - reset counted dive time, minutes (2 byte) | |
| 781 clrf apnoe_dive_secs ; - reset apnoe dive time, seconds (1 byte) | |
| 782 clrf apnoe_dive_mins ; - reset apnoe dive time, minutes (1 byte) | |
| 783 bcf apnoe_at_surface ; - apnoe mode starts in submerged state | |
| 784 return ; - done | |
| 582 | 785 |
| 623 | 786 isr_divemode_1sec_2: |
| 787 INCI total_divetime_secs ; increase total dive time (regardless of start_dive_threshold) | |
| 788 btfss count_divetime ; shall the dive time be counted (regarding start_dive_threshold)? | |
| 789 bra isr_divemode_1sec_4 ; NO (too shallow / apnoe at surface) | |
| 790 incf counted_divetime_secs,F ; YES - increase dive time (displayed dive time) | |
| 791 movlw d'59' ; - 60 seconds make a minute | |
| 792 cpfsgt counted_divetime_secs ; - next full minute reached? | |
| 793 bra isr_divemode_1sec_3 ; NO - done | |
| 794 clrf counted_divetime_secs ; YES - reset seconds to 0 | |
| 795 INCI counted_divetime_mins ; - increase dive minutes | |
| 796 bsf divetime_longer_1min ; - set flag for dive time exceeding 1 minute | |
| 797 ;bra isr_divemode_1sec_3 ; - done | |
| 0 | 798 |
| 623 | 799 isr_divemode_1sec_3: ; submerged |
| 800 btfss FLAG_apnoe_mode ; in apnoe mode? | |
| 801 return ; NO - done | |
| 802 btfss apnoe_at_surface ; - been at surface before? | |
| 803 bra isr_divemode_1sec_3a ; NO - increment the dive time | |
| 804 bcf apnoe_at_surface ; YES - a new dive has begun | |
| 805 bsf apnoe_new_dive ; - signal a new dive has begun | |
| 806 clrf apnoe_surface_secs ; - clear surface seconds | |
| 807 clrf apnoe_surface_mins ; - clear surface minutes | |
| 808 clrf apnoe_dive_secs ; - clear dive seconds | |
| 809 clrf apnoe_dive_mins ; - clear dive minutes | |
| 810 MOVII pressure_rel_cur,pressure_rel_max ; - reset max pressure to current pressure | |
| 811 bsf trigger_pres_max_changed ; - signal a new maximum pressure | |
| 812 isr_divemode_1sec_3a: | |
| 813 incf apnoe_dive_secs,F ; increment dive time, seconds | |
| 814 movlw d'59' ; 60 seconds make a minute | |
| 815 cpfsgt apnoe_dive_secs ; next full minute reached? | |
| 816 return ; NO - done | |
| 817 clrf apnoe_dive_secs ; YES - reset seconds to 0 | |
| 818 incf apnoe_dive_mins,F ; - increment dive time, minutes | |
| 819 return ; - done | |
| 0 | 820 |
| 623 | 821 isr_divemode_1sec_4: ; at surface |
| 822 btfss FLAG_apnoe_mode ; in apnoe mode? | |
| 823 return ; NO - done | |
| 824 bsf apnoe_at_surface ; YES - memorize been at the surface | |
| 825 incf apnoe_surface_secs,F ; - increment surface time, seconds | |
| 826 movlw d'59' ; - 60 seconds make a minute | |
| 827 cpfsgt apnoe_surface_secs ; - next full minute reached? | |
| 828 return ; NO - done | |
| 829 clrf apnoe_surface_secs ; YES - reset seconds to 0 | |
| 830 incf apnoe_surface_mins,F ; - increment surface time, minutes | |
| 831 return ; - done | |
| 832 | |
| 833 | |
| 834 | |
| 835 | |
| 836 | |
| 582 | 837 |
| 623 | 838 isr_divemode_1sec_3_dive: |
| 839 | |
| 840 | |
| 841 ;============================================================================= | |
| 842 ; BCD to Binary conversion | |
| 843 ; Input WREG = value in BCD | |
| 844 ; Output WREG = value in binary | |
| 845 ; | |
| 846 isr_rtcc_convert_BCD_DEC: | |
| 847 movwf isr_lo | |
| 848 swapf isr_lo, W | |
| 849 andlw 0x0F ; W = tens | |
| 850 rlncf WREG, W ; W = 2 * tens | |
| 851 subwf isr_lo, F ; 16 * tens + ones - 2*tens | |
| 852 subwf isr_lo, F ; 14 * tens + ones - 2*tens | |
| 853 subwf isr_lo, W ; 12 * tens + ones - 2*tens | |
| 582 | 854 return |
| 0 | 855 |
| 856 | |
| 857 ;============================================================================= | |
| 623 | 858 ; Check buttons |
| 859 ; | |
| 582 | 860 isr_switch_right: |
| 604 | 861 bcf INTCON,INT0IE ; disable INT0 |
| 582 | 862 btfss flip_screen ; 180° flipped? |
| 604 | 863 bsf switch_right ; set flag |
| 582 | 864 btfsc flip_screen ; 180° flipped? |
| 604 | 865 bsf switch_left ; set flag |
| 866 bra isr_switch_common ; continue... | |
| 0 | 867 |
| 582 | 868 isr_switch_left: |
| 604 | 869 bcf INTCON3,INT1IE ; disable INT1 |
| 582 | 870 btfss flip_screen ; 180° flipped? |
| 604 | 871 bsf switch_left ; set flag |
| 582 | 872 btfsc flip_screen ; 180° flipped? |
| 604 | 873 bsf switch_right ; set flag |
| 623 | 874 ;bra isr_switch_common ; continue... |
| 875 | |
| 0 | 876 isr_switch_common: |
| 623 | 877 clrf TMR1L ; load timer1 for first press |
| 604 | 878 movlw TMR1H_VALUE_FIRST ; in steps of 7.8125 ms |
| 623 | 879 movwf TMR1H ; ... |
| 604 | 880 bsf T1CON,TMR1ON ; start timer 1 |
| 881 bcf INTCON3,INT1IF ; clear flag | |
| 882 bcf INTCON,INT0IF ; clear flag | |
| 582 | 883 return |
| 0 | 884 |
| 623 | 885 |
| 886 ;============================================================================= | |
| 887 ; Button hold-down interrupt | |
| 888 ; | |
| 0 | 889 timer1int: |
| 604 | 890 bcf PIR1,TMR1IF ; clear flag |
| 891 bcf INTCON,INT0IF ; clear flag | |
| 892 bcf INTCON3,INT1IF ; clear flag | |
| 451 | 893 ; digital |
| 604 | 894 btfss switch_left1 ; left button hold-down? |
| 895 bra timer1int_left ; YES | |
| 896 btfss switch_right2 ; right button hold-down? | |
| 897 bra timer1int_right ; YES | |
| 582 | 898 |
| 623 | 899 ; analog |
| 604 | 900 btfsc analog_sw2_pressed ; left button hold-down? |
| 901 bra timer1int_left ; YES | |
| 902 btfsc analog_sw1_pressed ; right button hold-down? | |
| 903 bra timer1int_right ; YES | |
| 582 | 904 |
| 623 | 905 ; no button hold-down, stop Timer 1 |
| 604 | 906 bcf T1CON,TMR1ON ; stop timer 1 |
| 907 bsf INTCON,INT0IE ; enable INT0 | |
| 908 bsf INTCON3,INT1IE ; enable INT1 | |
| 451 | 909 return |
| 0 | 910 |
| 911 timer1int_left: | |
| 582 | 912 btfss flip_screen ; 180° flipped? |
| 604 | 913 bsf switch_left ; (re-)set flag |
| 582 | 914 btfsc flip_screen ; 180° flipped? |
| 604 | 915 bsf switch_right ; (re-)set flag |
| 916 bra timer1int_common ; continue | |
| 623 | 917 |
| 0 | 918 timer1int_right: |
| 582 | 919 btfss flip_screen ; 180° flipped? |
| 604 | 920 bsf switch_right ; set flag |
| 582 | 921 btfsc flip_screen ; 180° flipped? |
| 623 | 922 bsf switch_left ; (re-)set flag |
| 923 ;bra timer1int_common ; continue | |
| 924 | |
| 925 timer1int_common: ; load timer1 for next pressure | |
| 926 clrf TMR1L ; clear timer, low byte | |
| 927 movlw TMR1H_VALUE_CONT ; default to surface mode value | |
| 928 btfsc divemode ; in dive mode? | |
| 929 movlw TMR1H_VALUE_CONT_DIVE ; YES - overwrite with dive mode value | |
| 930 movwf TMR1H ; write value to timer, high byte | |
| 604 | 931 return ; return from timer1int with timer1 kept running |
| 0 | 932 |
| 623 | 933 |
| 0 | 934 ;============================================================================= |
| 623 | 935 ; Increment surface interval (counted in minutes) while still in desaturation |
| 936 ; | |
| 937 ; int_O_desaturation_time is only computed while in start, surface mode, | |
| 938 ; menue_tree or ghostwriter. So the ISR may clock surface_interval past | |
| 939 ; the actual surface interval time. But TFT_surface_lastdive will check | |
| 940 ; int_O_desaturation_time and in case int_O_desaturation_time is zero it | |
| 941 ; will not show surface_interval but lastdive_time instead. Thus the glitch | |
| 942 ; will remain invisible. | |
| 943 ; | |
| 944 inc_surface_interval: ; called every minute when not in dive mode (in banksel common context) | |
| 945 btfsc reset_surface_interval ; shall reset the surface interval timer? | |
| 946 bra inc_surface_interval_1 ; YES | |
| 947 movff int_O_desaturation_time+0,isr_lo ; NO - check desaturation time | |
| 948 movff int_O_desaturation_time+1,WREG | |
| 949 iorwf isr_lo,W ; - inclusive-or low & high byte, desaturation time = 0 ? | |
| 950 bz inc_surface_interval_1 ; YES - reset surface interval timer | |
| 951 INCI surface_interval ; NO - increment surface interval | |
| 952 return ; - done | |
| 953 inc_surface_interval_1: | |
| 954 bcf reset_surface_interval ; reset request flag | |
| 955 CLRI surface_interval ; reset surface interval timer | |
| 956 return ; done | |
| 0 | 957 |
| 958 ;============================================================================= | |
| 959 | |
| 582 | 960 END |