Mercurial > public > hwos_code
annotate src/isr.asm @ 627:bf5fee575701
minor cleanup, reset rx circuity
| author | heinrichsweikamp |
|---|---|
| date | Sun, 30 Jun 2019 23:22:32 +0200 |
| parents | c40025d8e750 |
| children | cd58f7fc86db |
| rev | line source |
|---|---|
| 0 | 1 ;============================================================================= |
| 2 ; | |
| 623 | 3 ; File isr.asm combined next generation V3.03.4 |
| 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 | |
| 0 | 43 |
| 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 | |
| 58 ENDIF | |
| 59 | |
| 60 ; serve pressure and temperature sensor | |
| 61 btfsc PIR5,TMR7IF ; timer 7 interrupt? | |
| 62 rcall isr_tmr7 ; YES - do every 62.5 ms tasks: read sensors, set CPU speed | |
| 63 | |
| 64 ; serve real-time clock (RTCC) | |
| 65 btfsc PIR3,RTCCIF ; real-time-clock interrupt? | |
| 66 rcall isr_rtcc ; YES - do every 1/2 s tasks: read RTC, trigger timed tasks, adjust CPU speed, gauge battery, etc. | |
| 113 | 67 |
| 623 | 68 ; clean up and exit |
| 69 rcall isr_registers_restore ; restore registers | |
| 70 bsf trigger_isr_updates ; signal that the ISR had kicked in | |
| 71 retfie FAST ; return from interrupt restoring BSR, STATUS and WREG | |
| 72 | |
| 113 | 73 |
| 623 | 74 ;============================================================================= |
| 75 ; CPU speed adjustment | |
| 76 ; | |
| 77 isr_adjust_speed: | |
| 78 movff cpu_speed_request,cpu_speed_state ; acknowledge CPU speed request | |
| 0 | 79 |
| 623 | 80 btfsc speed_is_eco ; speed 'eco' requested? |
| 81 bra isr_set_speed_to_eco ; YES - set eco speed | |
| 82 btfsc speed_is_fastest ; NO - speed 'fastest' requested? | |
| 83 bra isr_set_speed_to_fastest ; YES - set fastest speed | |
| 84 ;bra isr_set_speed_to_normal ; NO - default to normal speed | |
| 0 | 85 |
|
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
378
diff
changeset
|
86 isr_set_speed_to_normal: |
| 623 | 87 movlw b'00000000' ; coding for x4 PLL disabled |
| 88 movwf OSCTUNE ; switch off x4 PLL | |
| 89 movlw b'01110010' ; select 16 MHz | |
| 90 movwf OSCCON ; set prescaler | |
| 91 movlw T2CON_NORMAL ; PWM1 dimming factor for speed 'normal' | |
| 92 movwf T2CON ; adjust PWM1 for LED dimming | |
| 93 bra isr_adjust_speed_exit | |
| 94 | |
| 95 isr_set_speed_to_eco: | |
| 96 movlw b'00000000' ; coding for x4 PLL disabled | |
| 97 movwf OSCTUNE ; switch off x4 PLL | |
| 98 movlw b'00110010' ; select 1 MHz | |
| 99 movwf OSCCON ; set prescaler | |
| 100 movlw T2CON_ECO ; PWM1 dimming factor for speed 'eco' | |
| 101 movwf T2CON ; adjust PWM1 for LED dimming | |
| 102 bra isr_adjust_speed_exit | |
|
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
378
diff
changeset
|
103 |
| 623 | 104 isr_set_speed_to_fastest: |
| 105 movlw b'01110010' ; select 16 MHz by default | |
| 106 btfsc lv_core ; on OSTC with low voltage core? | |
| 107 movlw b'01100010' ; YES - reduce to 8 MHz | |
| 108 movwf OSCCON ; set prescaler | |
| 109 movlw b'01000000' ; coding for x4 PLL enable | |
| 110 movwf OSCTUNE ; switch on x4 PLL -> 64 MHz on high voltage core, 32 MHz on low voltage core | |
| 111 movlw T2CON_FASTEST ; PWM1 dimming factor for speed 'fastest' | |
| 112 movwf T2CON ; adjust PWM1 for LED dimming | |
| 113 ;bra isr_adjust_speed_exit | |
| 114 | |
| 115 isr_adjust_speed_exit: | |
| 116 btfss OSCCON,HFIOFS ; PLL stabilized? | |
| 117 bra isr_adjust_speed_exit ; NO - loop to give it some more time | |
| 118 return ; YES - done | |
| 119 | |
| 120 ; Attention: fill-up the gap between the end of this section | |
| 121 ; and the next section which starts at 0x00080 !! | |
| 582 | 122 nop |
| 623 | 123 |
| 124 block_0_code_end: ; marker to find end of code in block 0 in linker report file | |
|
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BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
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diff
changeset
|
125 |
| 623 | 126 ;============================================================================= |
| 127 ; jump vector for the bootloader, placed at an appointed position here | |
| 128 ; | |
| 604 | 129 isr_restore CODE 0x00080 ; restore first flash page from EEPROM |
|
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parents:
378
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changeset
|
130 restore_flash_0x00080: |
| 582 | 131 goto restore_flash |
|
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BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
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changeset
|
132 |
| 0 | 133 |
| 623 | 134 ;============================================================================= |
| 135 ; back-up and restore registers | |
| 136 ; | |
| 137 isr_registers_backup: | |
| 138 MOVII PRODL,PROD_backup ; back-up PRODH:PRODL | |
| 139 return | |
| 113 | 140 |
| 623 | 141 isr_registers_restore: |
| 142 MOVII PROD_backup,PRODL ; restore PRODH:PRODL | |
| 582 | 143 return |
| 0 | 144 |
| 623 | 145 |
| 146 ;============================================================================= | |
| 147 ; routines for handling digital-attached external sensors | |
| 148 ; | |
| 149 IFDEF _external_sensor | |
| 150 | |
| 151 ; Take a byte received on IR/S8 link and slot it into the RX buffer | |
| 152 ; | |
| 153 isr_uart2: | |
| 154 banksel RCREG2 ; RC*2 is outside access RAM | |
| 155 movff RCREG2,isr_lo ; copy received byte to isr_lo | |
| 156 bcf RCSTA2,CREN ; clear receiver status | |
| 157 bsf RCSTA2,CREN ; ... | |
| 158 banksel isr_backup ; back to default ISR bank | |
| 159 movlw .18 ; size of the buffer | |
| 160 cpfslt ir_s8_counter ; number of received bytes < buffer size? | |
| 161 bra isr_uart2_1 ; NO - buffer full, do not store the byte | |
| 162 movf ir_s8_counter,W ; YES - copy number of received bytes to WREG | |
| 163 MOVII FSR0L,FSR0_backup ; - back-up FSR0 | |
| 164 lfsr FSR0,ir_s8_buffer ; - load base address of buffer | |
| 165 movff isr_lo,PLUSW0 ; - store received byte | |
| 166 MOVII FSR0_backup,FSR0L ; - restore FSR0 | |
| 167 incf ir_s8_counter,F ; - increment number of received bytes by 1 | |
| 168 isr_uart2_1: | |
| 169 clrf TMR3L ; reload timer 3 | |
| 170 movlw .253 ; ... | |
| 171 movwf TMR3H ; ... | |
| 172 bsf T3CON,TMR3ON ; (re)start timeout timer 3 | |
| 173 return | |
| 174 | |
| 175 | |
| 176 ; Timeout on IR/S8 link: check the checksum and gather the received data | |
| 177 ; | |
| 178 isr_timer3: | |
| 604 | 179 bcf T3CON,TMR3ON ; stop timer 3 |
| 582 | 180 movlw .15 |
| 604 | 181 cpfseq ir_s8_counter ; got exactly 15 bytes? |
| 623 | 182 bra isr_timer3_1 ; NO - test for 16 bytes |
| 604 | 183 bra isr_timer3_ir ; YES - got 15 bytes, compute local checksum |
| 0 | 184 isr_timer3_1: |
| 582 | 185 movlw .16 |
| 604 | 186 cpfseq ir_s8_counter ; got exactly 16 bytes? |
| 623 | 187 bra isr_timer3_2 ; NO - test for 17 bytes |
| 604 | 188 tstfsz ir_s8_buffer+.15 ; YES - last byte = 0x00 ? |
| 189 bra isr_timer3_exit ; No - exit | |
| 190 bra isr_timer3_ir ; YES - got 16 bytes, compute local checksum | |
| 113 | 191 isr_timer3_2: |
| 582 | 192 movlw .17 |
| 604 | 193 cpfseq ir_s8_counter ; got exactly 17 bytes? |
| 194 bra isr_timer3_exit ; NO - exit | |
| 195 bra isr_timer3_s8 ; YES - S8 data | |
| 0 | 196 |
| 623 | 197 ; Process telegram received on IR link |
| 198 isr_timer3_ir: | |
| 199 movlw .12 ; checksum shall be computed for 1st and next 12 bytes | |
| 200 rcall compute_IR_S8_checksum ; compute checksum | |
| 201 movf ir_s8_buffer+.13,W ; get low byte of the received checksum | |
| 202 cpfseq isr_mpr+0 ; = low byte of the calculated local checksum? | |
| 203 bra isr_timer3_exit ; NO - exit | |
| 204 movf ir_s8_buffer+.14,W ; get high byte of the received checksum | |
| 205 cpfseq isr_mpr+1 ; = high byte of the calculated local checksum? | |
| 206 bra isr_timer3_exit ; NO - exit | |
| 207 ; YES to both - received telegram valid, copy data | |
| 0 | 208 |
| 623 | 209 movff ir_s8_buffer+.1, hud_status_byte |
| 210 movff ir_s8_buffer+.2, sensor1_mv+0 | |
| 211 movff ir_s8_buffer+.3, sensor1_mv+1 | |
| 212 movff ir_s8_buffer+.4, sensor2_mv+0 | |
| 213 movff ir_s8_buffer+.5, sensor2_mv+1 | |
| 214 movff ir_s8_buffer+.6, sensor3_mv+0 | |
| 215 movff ir_s8_buffer+.7, sensor3_mv+1 | |
| 216 movff ir_s8_buffer+.8, sensor1_ppO2 | |
| 217 movff ir_s8_buffer+.9, sensor2_ppO2 | |
| 218 movff ir_s8_buffer+.10,sensor3_ppO2 | |
| 582 | 219 movff ir_s8_buffer+.11,hud_battery_mv+0 |
| 220 movff ir_s8_buffer+.12,hud_battery_mv+1 | |
| 0 | 221 |
| 623 | 222 bsf hud_connection_ok ; set manually for hwHUD w/o the HUD module |
| 223 bra isr_timer3_reload ; reload timer and exit | |
| 224 | |
| 225 ; Process telegram received on S8 link | |
| 226 isr_timer3_s8: | |
| 227 movlw .14 ; checksum shall be computed for 1st and next 14 bytes | |
| 228 rcall compute_IR_S8_checksum ; compute checksum | |
| 229 | |
| 230 movf ir_s8_buffer+.15,W ; get low byte of the received checksum | |
| 231 cpfseq isr_mpr+0 ; = low byte of the calculated local checksum? | |
| 232 bra isr_timer3_exit ; NO - exit | |
| 233 movf ir_s8_buffer+.16,W ; get high byte of the received checksum | |
| 234 cpfseq isr_mpr+1 ; = high byte of the calculated local checksum? | |
| 235 bra isr_timer3_exit ; NO - exit | |
| 236 ; YES to both - received telegram valid, copy data | |
| 237 movff ir_s8_buffer+.3, hud_status_byte | |
| 238 movff ir_s8_buffer+.13,hud_battery_mv+0 | |
| 239 movff ir_s8_buffer+.14,hud_battery_mv+1 | |
|
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NEW: Support for hwHUD without the LED module
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changeset
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240 |
| 623 | 241 btfsc trigger_S8_data_update ; last data already processed? |
| 242 bra isr_timer3_reload ; NO - skip copying new results | |
| 243 bsf trigger_S8_data_update ; YES - set flag for new data available | |
| 244 ; - copy more data | |
| 582 | 245 |
| 623 | 246 movff ir_s8_buffer+.4, s8_rawdata_sensor1+0 |
| 247 movff ir_s8_buffer+.5, s8_rawdata_sensor1+1 | |
| 248 movff ir_s8_buffer+.6, s8_rawdata_sensor1+2 | |
| 249 movff ir_s8_buffer+.7, s8_rawdata_sensor2+0 | |
| 250 movff ir_s8_buffer+.8, s8_rawdata_sensor2+1 | |
| 251 movff ir_s8_buffer+.9, s8_rawdata_sensor2+2 | |
| 252 movff ir_s8_buffer+.10,s8_rawdata_sensor3+0 | |
| 253 movff ir_s8_buffer+.11,s8_rawdata_sensor3+1 | |
| 254 movff ir_s8_buffer+.12,s8_rawdata_sensor3+2 | |
| 255 | |
| 256 isr_timer3_reload: | |
| 257 movlw ir_timeout_value ; in multiples of 62.5 ms | |
| 258 movwf ir_s8_timeout ; reload timeout | |
| 0 | 259 isr_timer3_exit: |
| 604 | 260 clrf ir_s8_counter ; clear pointer |
| 261 bcf PIR2,TMR3IF ; clear flag | |
| 582 | 262 return |
| 0 | 263 |
| 264 | |
| 623 | 265 ; compute checksum on data in RX buffer |
| 266 ; | |
| 267 compute_IR_S8_checksum: | |
| 268 movwf ir_s8_counter ; initialize loop counter from WREG | |
| 269 movff ir_s8_buffer+0,isr_mpr+0 ; initialize low byte of the local checksum with first byte in buffer | |
| 270 clrf isr_mpr+1 ; clear the high byte of the local checksum | |
| 271 lfsr FSR0,ir_s8_buffer ; load base address of the buffer | |
| 272 compute_IR_S8_checksum_loop: | |
| 273 movf PREINC0,W ; get next byte | |
| 274 addwf isr_mpr+0,F ; add it to the to checksum, low byte | |
| 275 movlw .0 ; no explicit data to add to the high byte... | |
| 276 addwfc isr_mpr+1,F ; ... besides the carry | |
| 277 decfsz ir_s8_counter ; decrement number of bytes yet to do, all done? | |
| 278 bra compute_IR_S8_checksum_loop ; NO - loop | |
| 279 return ; YES - done | |
| 113 | 280 |
| 623 | 281 ENDIF ; _external_sensor |
| 113 | 282 |
| 0 | 283 ;============================================================================= |
| 284 | |
| 623 | 285 ;============================================================================= |
| 286 ; Tasks every 62.5 ms: buttons, dimming, pressure/temp sensor and CPU speed | |
| 287 ; | |
| 288 isr_tmr7: | |
| 582 | 289 bcf PIR5,TMR7IF ; clear flag |
| 623 | 290 movlw .248 ; rollover after 248 cycles -> 62.5 ms |
| 291 movff WREG,TMR7H ; timer 7 is outside access RAM | |
| 0 | 292 |
| 623 | 293 call get_analog_switches ; get analog readings, CAUTION: returns in bank common |
| 294 banksel isr_backup ;back to ISR default bank | |
| 295 | |
| 448 | 296 btfss INTCON3,INT1IE |
| 582 | 297 bra isr_tmr7_a |
| 448 | 298 btfsc analog_sw2_pressed |
| 623 | 299 rcall isr_switch_left ; get digital readings of left switch |
| 448 | 300 isr_tmr7_a: |
| 301 btfss INTCON,INT0IE | |
| 582 | 302 bra isr_tmr7_b |
| 448 | 303 btfsc analog_sw1_pressed |
| 623 | 304 rcall isr_switch_right ; get digital readings of right switch |
| 448 | 305 isr_tmr7_b: |
| 623 | 306 btfss block_sensor_interrupt ; sensor interrupts disabled? |
| 604 | 307 bra isr_tmr7_c ; NO - continue |
| 623 | 308 return ; YES - done |
|
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NEW: Deep Sleep mode for OSTC Plus and OSTC 2 (2017) (Entered automatically)
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changeset
|
309 isr_tmr7_c: |
| 623 | 310 movf max_CCPR1L,W ; dim value |
| 582 | 311 cpfseq CCPR1L ; = current PWM value? |
| 623 | 312 rcall isr_dimm_tft ; NO - adjust until max_CCPR1L = CCPR1L |
| 0 | 313 |
| 623 | 314 IFDEF _external_sensor |
| 315 decfsz ir_s8_timeout,F ; IR / S8 digital data still valid? | |
| 316 bra isr_tmr7_2 ; YES - continue | |
| 317 movlw ir_timeout_value ; NO - get timer reload in multiples of 62.5 ms | |
| 318 movwf ir_s8_timeout ; - reload the timer | |
| 319 btfss analog_o2_input ; - analog input available? | |
| 320 bra isr_tmr7_1a ; NO - clear data | |
| 321 btfss s8_digital_avail ; YES - S8 digital interface available? | |
| 322 bra isr_tmr7_2 ; NO - must be analog interface in use, keep data | |
| 113 | 323 isr_tmr7_1a: |
| 623 | 324 clrf hud_status_byte ; S8/IR timeout clears all analog input readings to zero -> fallback will be triggered when in sensor mode |
| 325 CLRI hud_battery_mv ; clear battery voltage | |
| 582 | 326 |
| 623 | 327 banksel sensor1_mv ; select bank where sensor data are stored |
| 328 CLRI sensor1_mv ; clear all sensor data | |
| 329 CLRI sensor2_mv ; ... | |
| 330 CLRI sensor3_mv ; ... | |
| 331 clrf sensor1_ppO2 ; ... | |
| 332 clrf sensor2_ppO2 ; ... | |
| 333 clrf sensor3_ppO2 ; ... | |
| 334 banksel isr_backup ; back to ISR default bank | |
| 335 | |
| 336 bsf trigger_S8_data_update ; signal a data update | |
| 337 ENDIF | |
| 582 | 338 |
| 0 | 339 isr_tmr7_2: |
| 623 | 340 btfsc block_sensor_interrupt ; sensor interrupts disabled? |
| 341 return ; YES - abort | |
| 0 | 342 |
| 343 isr_sensor_state2: | |
| 623 | 344 btfss sensor_state_counter,0 ; every 1/4 second |
| 345 bsf trigger_quarter_second ; set flag | |
| 346 | |
| 347 btfss speed_is_normal ; CPU running on normal speed? | |
| 348 rcall isr_set_speed_to_normal ; NO - set CPU speed to normal | |
| 582 | 349 |
| 623 | 350 ; update surface pressure |
| 351 btfss update_surface_pressure ; shall update the surface pressure? | |
| 352 bra isr_sensor_state2_1 ; NO | |
| 353 bcf update_surface_pressure ; YES - clear request flag | |
| 354 MOVII pressure_abs_ref,pressure_surf ; - update surface pressure | |
| 355 | |
| 356 isr_sensor_state2_1: | |
| 357 incf sensor_state_counter,F ; counts to eight for state machine | |
| 0 | 358 |
| 623 | 359 ; State 1: clear flags and average registers, get temperature (51 us) and start pressure integration (73.5 us) |
| 360 ; State 2: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 361 ; State 3: get temperature (51 us) and start pressure integration (73.5 us) | |
| 362 ; State 4: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 363 ; State 5: get temperature (51 us) and start pressure integration (73.5 us) | |
| 364 ; State 6: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 365 ; State 7: get temperature (51 us) and start pressure integration (73.5 us) | |
| 366 ; 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 | 367 |
| 623 | 368 movff sensor_state_counter,WREG ; WREG used as temp here... |
| 582 | 369 dcfsnz WREG,F |
| 623 | 370 bra sensor_int_state1_plus_restart ; do state 1 |
| 582 | 371 dcfsnz WREG,F |
| 623 | 372 bra sensor_int_state2 ; do state 2 |
| 582 | 373 dcfsnz WREG,F |
| 623 | 374 bra sensor_int_state1 ; do state 3 |
| 582 | 375 dcfsnz WREG,F |
| 623 | 376 bra sensor_int_state2 ; do state 4 |
| 582 | 377 dcfsnz WREG,F |
| 623 | 378 bra sensor_int_state1 ; do state 5 |
| 582 | 379 dcfsnz WREG,F |
| 623 | 380 bra sensor_int_state2 ; do state 6 |
| 582 | 381 dcfsnz WREG,F |
| 623 | 382 bra sensor_int_state1 ; do state 7 |
| 383 | |
| 384 ; first, do state 2: | |
| 385 call get_pressure_value ; state 2: get pressure (51 us) | |
| 386 call get_temperature_start ; and start temperature integration (73.5 us) | |
| 387 call calculate_compensation ; calculate temperature compensated pressure (27 us) | |
| 0 | 388 |
| 623 | 389 ; build average for pressure |
| 390 bcf STATUS,C ; clear carry bit | |
| 391 rrcf pressure_abs_avg+1 ; divide by 2 | |
| 392 rrcf pressure_abs_avg+0 | |
| 393 bcf STATUS,C ; clear carry bit | |
| 394 rrcf pressure_abs_avg+1 ; divide by 2, again | |
| 395 rrcf pressure_abs_avg+0 | |
| 396 | |
| 397 ; copy into result register | |
| 398 MOVII pressure_abs_avg,pressure_abs | |
| 0 | 399 |
| 623 | 400 ; build average for temperature |
| 401 bcf STATUS,C ; clear carry bit by default | |
| 402 btfsc temperature_avg+1,7 ; sign bit set? | |
| 403 bsf STATUS,C ; YES - copy sign bit to carry bit | |
| 404 rrcf temperature_avg+1 ; divide signed temperature by 2 | |
| 405 rrcf temperature_avg+0 ; ... | |
| 406 bcf STATUS,C ; clear carry bit by default | |
| 407 btfsc temperature_avg+1,7 ; sign bit set? | |
| 408 bsf STATUS,C ; YES - copy sign bit to carry bit | |
| 409 rrcf temperature_avg+1 ; divide signed temperature by 2 again (by 4 in total now) | |
| 410 rrcf temperature_avg+0 ; ... | |
| 411 MOVII temperature_avg,temperature_cur ; store final result | |
| 0 | 412 |
| 623 | 413 ; check for temperature change |
| 414 movf temperature_cur+0,W ; get current temperature, low byte | |
| 415 cpfseq temperature_last+0 ; compare with last temperature, equal? | |
| 416 bra isr_sensor_state2_2 ; NO - temperature has changed | |
| 417 movf temperature_cur+1,W ; get current temperature, high byte | |
| 418 cpfseq temperature_last+1 ; compare with last temperature, equal? | |
| 419 bra isr_sensor_state2_2 ; NO - temperature has changed | |
| 420 bra isr_sensor_state2_3 ; YES to both - no change | |
| 0 | 421 |
| 422 isr_sensor_state2_2: | |
| 623 | 423 MOVII temperature_cur,temperature_last ; store current temperature as last temperature for next round |
| 424 bsf trigger_temp_changed ; set flag for temperature change | |
| 425 | |
| 0 | 426 isr_sensor_state2_3: |
| 623 | 427 ; reset state counter and set update flag |
| 428 clrf sensor_state_counter ; reset state counter | |
| 429 bsf trigger_pres_update ; signal a pressure update | |
| 430 btfss reset_max_pressure ; shall clear the max pressure? | |
| 431 bra isr_sensor_state2_3a ; NO - continue with checking for pressure change | |
| 432 bcf reset_max_pressure ; YES - clear request flag | |
| 433 CLRI pressure_rel_max ; - clear max. pressure | |
| 0 | 434 |
| 623 | 435 isr_sensor_state2_3a: |
| 436 ; check for pressure change | |
| 437 movf pressure_abs+0,W ; get current pressure, low byte | |
| 438 cpfseq pressure_abs_last+0 ; compare with last pressure, equal? | |
| 439 bra isr_sensor_state2_4 ; NO - pressure has changed | |
| 440 movf pressure_abs+1,W ; YES - get current pressure, high byte | |
| 441 cpfseq pressure_abs_last+1 ; - compare with last pressure, equal? | |
| 442 bra isr_sensor_state2_4 ; NO - pressure has changed | |
| 443 bra isr_sensor_state2_5 ; YES - no change | |
| 444 | |
| 445 isr_sensor_state2_4: | |
| 446 MOVII pressure_abs,pressure_abs_last ; store current pressure as last pressure for next round | |
| 447 bsf trigger_pres_cur_changed ; signal a pressure change | |
| 448 | |
| 449 isr_sensor_state2_5: | |
| 450 ; compute relative pressure | |
| 451 movf pressure_surf+0,W ; get surface pressure, low byte | |
| 452 subwf pressure_abs+0,W ; WREG = pressure_abs - pressure_surf (low byte) | |
| 453 movwf pressure_rel_cur+0 ; store relative pressure, low byte | |
| 454 movf pressure_surf+1,W ; get surface pressure, high byte | |
| 455 subwfb pressure_abs+1,W ; WREG = pressure_abs - pressure_surf (high byte) | |
| 456 movwf pressure_rel_cur+1 ; store relative pressure, high byte | |
| 457 btfss STATUS,N ; relative pressure < 0 ? | |
| 458 bra isr_sensor_state2_6 ; NO - OK, keep result | |
| 459 CLRI pressure_rel_cur ; YES - set relative pressure to zero | |
| 0 | 460 |
| 623 | 461 isr_sensor_state2_6: |
| 462 ; check for new max relative pressure | |
| 463 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 464 subwf pressure_rel_max+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
| 465 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 466 subwfb pressure_rel_max+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
| 467 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
| 468 bra isr_sensor_state2_6a ; NO | |
| 469 MOVII pressure_rel_cur,pressure_rel_max ; YES - set new max rel pressure | |
| 470 bsf trigger_pres_max_changed ; - signal a pressure max change | |
| 471 | |
| 472 isr_sensor_state2_6a: | |
| 0 | 473 |
| 623 | 474 IFDEF _min_depth_option |
| 475 ; check if min/max pressures shall be reset | |
| 476 btfss reset_trip_pressure ; shall reset the resettable min/max pressures? | |
| 477 bra isr_sensor_state2_6b ; NO | |
| 478 bcf reset_trip_pressure ; YES - clear request flag | |
| 479 CLRI pressure_rel_max_trip ; - set max pressure to zero | |
| 480 SETI pressure_rel_min_trip ; - set min pressure to biggest value possible | |
| 481 isr_sensor_state2_6b: | |
| 482 ; check for new resettable max relative pressure | |
| 483 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 484 subwf pressure_rel_max_trip+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
| 485 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 486 subwfb pressure_rel_max_trip+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
| 487 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
| 488 bra isr_sensor_state2_6c ; NO - continue checking for min depth | |
| 489 MOVII pressure_rel_cur,pressure_rel_max_trip ; YES - set new max rel pressure | |
| 490 isr_sensor_state2_6c: | |
| 491 ; check for new resettable min relative pressure | |
| 492 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 493 subwf pressure_rel_min_trip+0,W ; WREG = pressure_rel_min - pressure_rel_cur (low byte) | |
| 494 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 495 subwfb pressure_rel_min_trip+1,W ; WREG = pressure_rel_min - pressure_rel_cur (high byte) | |
| 496 btfss STATUS,C ; result > 0, i.e. new min rel pressure? | |
| 497 bra sensor_int_state_exit ; NO - done | |
| 498 MOVII pressure_rel_cur,pressure_rel_min_trip ; YES - set new min rel pressure | |
| 499 ENDIF ; _min_depth_option | |
| 500 bra sensor_int_state_exit ; done | |
| 0 | 501 |
| 502 | |
| 503 sensor_int_state1_plus_restart: | |
| 623 | 504 ; clear average registers |
| 505 CLRI pressure_abs_avg | |
| 506 CLRI temperature_avg | |
| 0 | 507 |
| 508 sensor_int_state1: | |
| 604 | 509 call get_temperature_value ; state 1: get temperature... |
| 510 call get_pressure_start ; ...and start pressure integration | |
| 582 | 511 bra sensor_int_state_exit |
| 0 | 512 |
| 513 sensor_int_state2: | |
| 604 | 514 call get_pressure_value ; state 2: get pressure (51 us)... |
| 515 call get_temperature_start ; ...and start temperature integration (73.5 us) | |
| 516 call calculate_compensation ; .. and calculate temperature compensated pressure (233 us) | |
| 582 | 517 |
| 0 | 518 sensor_int_state_exit: |
| 623 | 519 bra isr_adjust_speed ; set/restore CPU speed and return |
| 520 | |
| 521 | |
| 522 isr_dimm_tft: ; adjust until max_CCPR1L = CCPR1L | |
| 523 btfsc tft_is_dimming ; is the display dimming? | |
| 524 return ; YES - ignore | |
| 525 movf max_CCPR1L,W ; NO - proceed | |
| 526 cpfsgt CCPR1L ; CCPR1L > max_CCPR1L ? | |
| 527 bra isr_dimm_tft2 ; NO - dim up | |
| 528 decf CCPR1L,F ; YES - dim down | |
| 529 return ; - done | |
| 530 isr_dimm_tft2: | |
| 531 movf max_CCPR1L,W | |
| 532 sublw ambient_light_min_eco | |
| 533 cpfsgt CCPR1L ; CCPR1L > max_CCPR1L - ambient_light_min_eco ? | |
| 534 bra isr_dimm_tft3 ; NO - dim up slow | |
| 535 movlw .10 ; YES - dim up faster | |
| 536 addwf CCPR1L,F | |
| 537 isr_dimm_tft3: | |
| 538 incf CCPR1L,F ; +1 | |
| 539 return ; done | |
| 540 | |
| 582 | 541 |
| 0 | 542 ;============================================================================= |
| 623 | 543 ; RTC interrupt on every 1/2 second |
| 544 ; | |
| 545 isr_rtcc: | |
| 546 bcf PIR3,RTCCIF ; clear flag | |
| 547 bsf trigger_half_second ; set flag for a new 1/2 second has begun | |
| 548 btfsc reset_timebase ; shall reset the timebase? | |
| 549 bra isr_rtcc_1 ; YES - warp to new full second | |
| 550 btg timebase_0sec ; NO - toggle the 1/2 second timebase | |
| 551 btfsc timebase_0sec ; - did it toggled 1 -> 0 ? | |
| 552 return ; NO - on half second, done | |
| 0 | 553 |
| 623 | 554 isr_rtcc_1: |
| 555 ; new full second | |
| 556 bsf trigger_full_second ; set flag for a new 1/1 second has begun | |
| 557 | |
| 558 btfsc block_rtc_access ; ISR suspended from accessing the RTC? | |
| 559 bra isr_rtcc_2 ; YES | |
| 560 | |
| 561 banksel RTCCFG ; RTC registers are outside access RAM | |
| 582 | 562 bsf RTCCFG,RTCPTR1 |
| 623 | 563 bsf RTCCFG,RTCPTR0 |
| 564 banksel isr_backup ; back to ISR default bank | |
| 565 | |
| 566 movff RTCVALL,rtc_year ; read year in BCD | |
| 567 movff RTCVALH,rtc_day ; dummy read | |
| 568 movff RTCVALL,rtc_day ; read day in BCD | |
| 569 movff RTCVALH,rtc_month ; read month in BCD | |
| 570 movff RTCVALL,rtc_hour ; read hour in BCD | |
| 571 movff RTCVALH,rtc_secs ; dummy read | |
| 572 movff RTCVALL,rtc_secs ; read seconds in BCD | |
| 573 movff RTCVALH,rtc_mins ; read minutes in BCD | |
| 582 | 574 |
| 575 ; Convert BCD to DEC and set registers | |
| 623 | 576 movf rtc_mins,W |
| 577 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 578 movwf rtc_mins | |
| 579 movf rtc_secs,W | |
| 580 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 581 movwf rtc_secs | |
| 582 movf rtc_hour,W | |
| 583 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 584 movwf rtc_hour | |
| 585 movf rtc_month,W | |
| 586 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 587 movwf rtc_month | |
| 588 movf rtc_day,W | |
| 589 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 590 movwf rtc_day | |
| 591 movf rtc_year,W | |
| 592 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 593 movwf rtc_year | |
| 594 | |
| 595 isr_rtcc_2: | |
| 596 ; get ambient light level and set max_CCPR1L | |
| 597 call get_ambient_level ; get ambient light level and set max_CCPR1L | |
| 598 banksel isr_backup ; back to ISR default bank (for safety only) | |
| 599 | |
| 600 rcall isr_battery_gauge ; calculate the current charge consumption and add it to the battery gauge | |
| 601 rcall isr_update_uptime ; increment overall OSTC uptime | |
| 602 rcall isr_update_timeout ; process the timeout timer | |
| 603 | |
| 604 btfsc divemode ; in dive mode? | |
| 605 rcall isr_divemode_1sec ; YES - do the every second dive mode tasks | |
| 606 | |
| 607 btfsc divemode ; in dive mode? | |
| 608 btfsc simulatormode ; YES - in simulator mode? | |
| 609 rcall isr_update_lastdive_time ; NO - YES - increment the last dive time | |
| 0 | 610 |
| 623 | 611 ; reset the timebase if requested |
| 612 btfss reset_timebase ; shall reset the timebase? | |
| 613 bra isr_rtcc_3 ; NO | |
| 614 bcf reset_timebase ; YES - clear request flag | |
| 615 clrf eventbase ; - clear all pending events | |
| 616 clrf timebase ; - clear all timebase flags | |
| 617 clrf timebase_secs ; - clear seconds timer | |
| 618 clrf timebase_mins ; - clear minutes timer | |
| 619 clrf simulator_time ; - clear minutes timer of simulator runtime as well | |
| 620 bsf trigger_half_second ; - set flag for a new 1/2 second has begun | |
| 621 bsf trigger_full_second ; - set flag for a new 1/1 second has begun | |
| 622 return ; - done | |
| 623 | |
| 624 isr_rtcc_3: | |
| 625 ; count-up the 2 seconds timebase timer | |
| 626 btg timebase_1sec ; toggle the 1 second timer bit | |
| 627 btfss timebase_1sec ; did it toggled 1 -> 0 ? | |
| 628 btg timebase_2sec ; YES - toggle the 2 seconds timer bit | |
| 629 | |
| 630 ; count-up the seconds timer | |
| 631 incf timebase_secs,F ; increment seconds timer (may temporary become 60 here) | |
| 632 movlw .59 ; max. for seconds timer | |
| 633 cpfsgt timebase_secs ; seconds timer > max.? | |
| 634 return ; NO - done | |
| 0 | 635 |
| 623 | 636 ; new full minute |
| 637 clrf timebase_secs ; YES - reset timer | |
| 638 bsf trigger_full_minute ; - set flag for a new minute has begun | |
| 639 | |
| 640 btfsc divemode ; - in dive mode? | |
| 641 btfsc simulatormode ; YES - in simulator mode? | |
| 642 rcall inc_surface_interval ; NO - YES - increment surface interval | |
| 643 | |
| 644 btfss simulatormode ; - in simulator mode? | |
| 645 bra isr_rtcc_4 ; NO | |
| 646 infsnz simulator_time,F ; YES - increment real runtime of the simulator, did wrap around (became zero)? | |
| 647 setf simulator_time ; YES - disallow wrap-around, keep at 255 instead | |
| 0 | 648 |
| 623 | 649 isr_rtcc_4: |
| 650 incf timebase_mins,F ; - increment minutes timer | |
| 651 movlw .59 ; - max. for minutes timer | |
| 652 cpfsgt timebase_mins ; - minutes timer > max.? | |
| 653 return ; NO - done | |
| 654 | |
| 655 ; new full hour | |
| 656 clrf timebase_mins ; YES - reset timer | |
| 657 bsf trigger_full_hour ; - set flag for a new hour has begun | |
| 658 return ; - done | |
| 659 | |
| 660 | |
| 661 ; increment overall OSTC uptime | |
| 662 isr_update_uptime: | |
| 582 | 663 incf uptime+0,F |
| 623 | 664 clrf WREG |
| 582 | 665 addwfc uptime+1,F |
| 666 addwfc uptime+2,F | |
| 667 addwfc uptime+3,F | |
| 623 | 668 return |
| 0 | 669 |
| 623 | 670 ; increment time since last dive, called every second when not in dive mode (or when in simulator mode) |
| 671 isr_update_lastdive_time: | |
| 582 | 672 incf lastdive_time+0,F |
| 623 | 673 clrf WREG |
| 582 | 674 addwfc lastdive_time+1,F |
| 675 addwfc lastdive_time+2,F | |
| 676 addwfc lastdive_time+3,F | |
| 677 return | |
| 678 | |
| 623 | 679 ; process the timeout timer |
| 680 isr_update_timeout: | |
| 681 btfsc reset_timeout ; shall reset the timeout? | |
| 682 bra isr_update_timeout_1 ; YES | |
| 683 tstfsz isr_timeout_timer ; NO - timeout timer already at zero? | |
| 684 decfsz isr_timeout_timer ; NO - decrement timer, reached zero now? | |
| 685 return ; YES / NO - nothing further to do | |
| 686 bsf trigger_timeout ; YES - set timeout flag | |
| 687 return ; - done | |
| 688 isr_update_timeout_1: | |
| 689 bcf reset_timeout ; clear request flag | |
| 690 bcf trigger_timeout ; clear pending timeout trigger, if any | |
| 691 movff isr_timeout_reload,isr_timeout_timer ; reload timer | |
| 692 return ; done | |
| 0 | 693 |
| 623 | 694 ;============================================================================= |
| 695 ; Calculate charge drawn from the battery | |
| 696 ; | |
| 697 isr_battery_gauge: | |
| 698 btfsc block_battery_gauge ; access to battery gauge suspended? | |
| 699 return ; YES - done | |
| 700 MOVLI current_sleepmode,isr_mpr ; NO - default to sleep mode with 100µA/3600 -> nAs | |
| 701 btfss sleepmode ; - in sleep mode? | |
| 702 rcall isr_battery_gauge2 ; NO - compute current consumption value into isr_lo and isr_hi | |
| 703 movf isr_mpr+0,W ; - 48 bit add of isr_mpr:2 with battery_gauge:6 | |
| 582 | 704 addwf battery_gauge+0,F |
| 623 | 705 movf isr_mpr+1,W |
| 582 | 706 addwfc battery_gauge+1,F |
| 623 | 707 clrf WREG |
| 582 | 708 addwfc battery_gauge+2,F |
| 709 addwfc battery_gauge+3,F | |
| 710 addwfc battery_gauge+4,F | |
| 711 addwfc battery_gauge+5,F | |
| 712 return | |
| 713 | |
| 0 | 714 isr_battery_gauge2: |
| 623 | 715 ; set consumption rate in nAs - nano Ampere per second |
| 0 | 716 ; Example: |
| 623 | 717 ; MOVLI .55556,isr_mpr ; 0.2 Ah / 3600 seconds per hour * 1e9s = nAs |
| 718 ; | |
| 719 ; Remark: although all the constants are named current_xxxx, in reality they mean charge! | |
| 0 | 720 |
| 623 | 721 ; Calculate current consumption for LED backlight: 47*CCPR1L+272 (according to values in hwos.inc: 115*CCPR1L+216) |
| 722 movf CCPR1L,W ; get CCPR1L into WREG | |
| 723 mullw current_backlight_multi ; PRODH:PRODL = k * WREG = current_backlight_multi * CCPR1L | |
| 724 ADDLI current_backlight_offset,PRODL ; PRODH:PRODL += current_backlight_offset | |
| 725 MOVII PRODL,isr_mpr ; copy result to isr_mpr | |
| 0 | 726 |
| 623 | 727 ; Add current for CPU and GPU |
| 728 ; cpu_speed_state = ECO 3.10 mA -> 861 nAs | |
| 729 ; = NORMAL 5.50 mA -> 1528 nAs | |
| 730 ; = FASTEST 8.04 mA -> 2233 nAs | |
| 731 btfss speed_is_eco ; speed = eco ? | |
| 732 bra isr_battery_gauge3 ; NO | |
| 733 ADDLI current_speed_eco,isr_mpr ; YES - add current_speed_eco to isr_mpr | |
| 582 | 734 bra isr_battery_gauge5 |
| 0 | 735 isr_battery_gauge3: |
| 623 | 736 btfss speed_is_normal ; speed = normal? |
| 737 bra isr_battery_gauge4 ; NO | |
| 738 ADDLI current_speed_normal,isr_mpr ; YES - add current_speed_normal to isr_mpr | |
| 582 | 739 bra isr_battery_gauge5 |
| 0 | 740 isr_battery_gauge4: |
| 623 | 741 ADDLI current_speed_fastest,isr_mpr ; speed is fastest, add current_speed_fastest to isr_mpr |
| 0 | 742 isr_battery_gauge5: |
| 623 | 743 btfss ir_power ; IR enabled? |
| 744 bra isr_battery_gauge6 ; NO | |
| 745 ADDLI current_ir_receiver,isr_mpr ; YES - add current_ir_receiver to isr_mpr | |
| 0 | 746 isr_battery_gauge6: |
| 623 | 747 btfss compass_enabled ; compass active? |
| 748 bra isr_battery_gauge7 ; NO | |
| 749 ADDLI current_compass,isr_mpr ; YES - add current_compass to isr_mpr | |
| 0 | 750 isr_battery_gauge7: |
| 582 | 751 return |
| 0 | 752 |
| 623 | 753 |
| 754 ;============================================================================= | |
| 755 ; Every second tasks while in dive mode | |
| 756 ; | |
| 0 | 757 isr_divemode_1sec: |
| 623 | 758 decfsz sampling_timer,F ; decrement sampling timer, became zero? |
| 759 bra isr_divemode_1sec_1 ; NO | |
| 760 bsf trigger_sample_divedata ; YES - set trigger flag for sampling dive data | |
| 761 movff sampling_rate,sampling_timer; - reload timer | |
| 0 | 762 |
| 623 | 763 isr_divemode_1sec_1: |
| 764 btfss reset_timebase ; shall reset the timebase? (request flag will be cleared later) | |
| 765 bra isr_divemode_1sec_2 ; NO | |
| 766 CLRI total_divetime_secs ; YES - reset total dive time, seconds (2 byte) | |
| 767 clrf counted_divetime_secs ; - reset counted dive time, seconds (1 byte) | |
| 768 CLRI counted_divetime_mins ; - reset counted dive time, minutes (2 byte) | |
| 769 clrf apnoe_dive_secs ; - reset apnoe dive time, seconds (1 byte) | |
| 770 clrf apnoe_dive_mins ; - reset apnoe dive time, minutes (1 byte) | |
| 771 bcf apnoe_at_surface ; - apnoe mode starts in submerged state | |
| 772 return ; - done | |
| 582 | 773 |
| 623 | 774 isr_divemode_1sec_2: |
| 775 INCI total_divetime_secs ; increase total dive time (regardless of start_dive_threshold) | |
| 776 btfss count_divetime ; shall the dive time be counted (regarding start_dive_threshold)? | |
| 777 bra isr_divemode_1sec_4 ; NO (too shallow / apnoe at surface) | |
| 778 incf counted_divetime_secs,F ; YES - increase dive time (displayed dive time) | |
| 779 movlw d'59' ; - 60 seconds make a minute | |
| 780 cpfsgt counted_divetime_secs ; - next full minute reached? | |
| 781 bra isr_divemode_1sec_3 ; NO - done | |
| 782 clrf counted_divetime_secs ; YES - reset seconds to 0 | |
| 783 INCI counted_divetime_mins ; - increase dive minutes | |
| 784 bsf divetime_longer_1min ; - set flag for dive time exceeding 1 minute | |
| 785 ;bra isr_divemode_1sec_3 ; - done | |
| 0 | 786 |
| 623 | 787 isr_divemode_1sec_3: ; submerged |
| 788 btfss FLAG_apnoe_mode ; in apnoe mode? | |
| 789 return ; NO - done | |
| 790 btfss apnoe_at_surface ; - been at surface before? | |
| 791 bra isr_divemode_1sec_3a ; NO - increment the dive time | |
| 792 bcf apnoe_at_surface ; YES - a new dive has begun | |
| 793 bsf apnoe_new_dive ; - signal a new dive has begun | |
| 794 clrf apnoe_surface_secs ; - clear surface seconds | |
| 795 clrf apnoe_surface_mins ; - clear surface minutes | |
| 796 clrf apnoe_dive_secs ; - clear dive seconds | |
| 797 clrf apnoe_dive_mins ; - clear dive minutes | |
| 798 MOVII pressure_rel_cur,pressure_rel_max ; - reset max pressure to current pressure | |
| 799 bsf trigger_pres_max_changed ; - signal a new maximum pressure | |
| 800 isr_divemode_1sec_3a: | |
| 801 incf apnoe_dive_secs,F ; increment dive time, seconds | |
| 802 movlw d'59' ; 60 seconds make a minute | |
| 803 cpfsgt apnoe_dive_secs ; next full minute reached? | |
| 804 return ; NO - done | |
| 805 clrf apnoe_dive_secs ; YES - reset seconds to 0 | |
| 806 incf apnoe_dive_mins,F ; - increment dive time, minutes | |
| 807 return ; - done | |
| 0 | 808 |
| 623 | 809 isr_divemode_1sec_4: ; at surface |
| 810 btfss FLAG_apnoe_mode ; in apnoe mode? | |
| 811 return ; NO - done | |
| 812 bsf apnoe_at_surface ; YES - memorize been at the surface | |
| 813 incf apnoe_surface_secs,F ; - increment surface time, seconds | |
| 814 movlw d'59' ; - 60 seconds make a minute | |
| 815 cpfsgt apnoe_surface_secs ; - next full minute reached? | |
| 816 return ; NO - done | |
| 817 clrf apnoe_surface_secs ; YES - reset seconds to 0 | |
| 818 incf apnoe_surface_mins,F ; - increment surface time, minutes | |
| 819 return ; - done | |
| 820 | |
| 821 | |
| 822 | |
| 823 | |
| 824 | |
| 582 | 825 |
| 623 | 826 isr_divemode_1sec_3_dive: |
| 827 | |
| 828 | |
| 829 ;============================================================================= | |
| 830 ; BCD to Binary conversion | |
| 831 ; Input WREG = value in BCD | |
| 832 ; Output WREG = value in binary | |
| 833 ; | |
| 834 isr_rtcc_convert_BCD_DEC: | |
| 835 movwf isr_lo | |
| 836 swapf isr_lo, W | |
| 837 andlw 0x0F ; W = tens | |
| 838 rlncf WREG, W ; W = 2 * tens | |
| 839 subwf isr_lo, F ; 16 * tens + ones - 2*tens | |
| 840 subwf isr_lo, F ; 14 * tens + ones - 2*tens | |
| 841 subwf isr_lo, W ; 12 * tens + ones - 2*tens | |
| 582 | 842 return |
| 0 | 843 |
| 844 | |
| 845 ;============================================================================= | |
| 623 | 846 ; Check buttons |
| 847 ; | |
| 582 | 848 isr_switch_right: |
| 604 | 849 bcf INTCON,INT0IE ; disable INT0 |
| 582 | 850 btfss flip_screen ; 180° flipped? |
| 604 | 851 bsf switch_right ; set flag |
| 582 | 852 btfsc flip_screen ; 180° flipped? |
| 604 | 853 bsf switch_left ; set flag |
| 854 bra isr_switch_common ; continue... | |
| 0 | 855 |
| 582 | 856 isr_switch_left: |
| 604 | 857 bcf INTCON3,INT1IE ; disable INT1 |
| 582 | 858 btfss flip_screen ; 180° flipped? |
| 604 | 859 bsf switch_left ; set flag |
| 582 | 860 btfsc flip_screen ; 180° flipped? |
| 604 | 861 bsf switch_right ; set flag |
| 623 | 862 ;bra isr_switch_common ; continue... |
| 863 | |
| 0 | 864 isr_switch_common: |
| 623 | 865 clrf TMR1L ; load timer1 for first press |
| 604 | 866 movlw TMR1H_VALUE_FIRST ; in steps of 7.8125 ms |
| 623 | 867 movwf TMR1H ; ... |
| 604 | 868 bsf T1CON,TMR1ON ; start timer 1 |
| 869 bcf INTCON3,INT1IF ; clear flag | |
| 870 bcf INTCON,INT0IF ; clear flag | |
| 582 | 871 return |
| 0 | 872 |
| 623 | 873 |
| 874 ;============================================================================= | |
| 875 ; Button hold-down interrupt | |
| 876 ; | |
| 0 | 877 timer1int: |
| 604 | 878 bcf PIR1,TMR1IF ; clear flag |
| 879 bcf INTCON,INT0IF ; clear flag | |
| 880 bcf INTCON3,INT1IF ; clear flag | |
| 451 | 881 ; digital |
| 604 | 882 btfss switch_left1 ; left button hold-down? |
| 883 bra timer1int_left ; YES | |
| 884 btfss switch_right2 ; right button hold-down? | |
| 885 bra timer1int_right ; YES | |
| 582 | 886 |
| 623 | 887 ; analog |
| 604 | 888 btfsc analog_sw2_pressed ; left button hold-down? |
| 889 bra timer1int_left ; YES | |
| 890 btfsc analog_sw1_pressed ; right button hold-down? | |
| 891 bra timer1int_right ; YES | |
| 582 | 892 |
| 623 | 893 ; no button hold-down, stop Timer 1 |
| 604 | 894 bcf T1CON,TMR1ON ; stop timer 1 |
| 895 bsf INTCON,INT0IE ; enable INT0 | |
| 896 bsf INTCON3,INT1IE ; enable INT1 | |
| 451 | 897 return |
| 0 | 898 |
| 899 timer1int_left: | |
| 582 | 900 btfss flip_screen ; 180° flipped? |
| 604 | 901 bsf switch_left ; (re-)set flag |
| 582 | 902 btfsc flip_screen ; 180° flipped? |
| 604 | 903 bsf switch_right ; (re-)set flag |
| 904 bra timer1int_common ; continue | |
| 623 | 905 |
| 0 | 906 timer1int_right: |
| 582 | 907 btfss flip_screen ; 180° flipped? |
| 604 | 908 bsf switch_right ; set flag |
| 582 | 909 btfsc flip_screen ; 180° flipped? |
| 623 | 910 bsf switch_left ; (re-)set flag |
| 911 ;bra timer1int_common ; continue | |
| 912 | |
| 913 timer1int_common: ; load timer1 for next pressure | |
| 914 clrf TMR1L ; clear timer, low byte | |
| 915 movlw TMR1H_VALUE_CONT ; default to surface mode value | |
| 916 btfsc divemode ; in dive mode? | |
| 917 movlw TMR1H_VALUE_CONT_DIVE ; YES - overwrite with dive mode value | |
| 918 movwf TMR1H ; write value to timer, high byte | |
| 604 | 919 return ; return from timer1int with timer1 kept running |
| 0 | 920 |
| 623 | 921 |
| 0 | 922 ;============================================================================= |
| 623 | 923 ; Increment surface interval (counted in minutes) while still in desaturation |
| 924 ; | |
| 925 ; int_O_desaturation_time is only computed while in start, surface mode, | |
| 926 ; menue_tree or ghostwriter. So the ISR may clock surface_interval past | |
| 927 ; the actual surface interval time. But TFT_surface_lastdive will check | |
| 928 ; int_O_desaturation_time and in case int_O_desaturation_time is zero it | |
| 929 ; will not show surface_interval but lastdive_time instead. Thus the glitch | |
| 930 ; will remain invisible. | |
| 931 ; | |
| 932 inc_surface_interval: ; called every minute when not in dive mode (in banksel common context) | |
| 933 btfsc reset_surface_interval ; shall reset the surface interval timer? | |
| 934 bra inc_surface_interval_1 ; YES | |
| 935 movff int_O_desaturation_time+0,isr_lo ; NO - check desaturation time | |
| 936 movff int_O_desaturation_time+1,WREG | |
| 937 iorwf isr_lo,W ; - inclusive-or low & high byte, desaturation time = 0 ? | |
| 938 bz inc_surface_interval_1 ; YES - reset surface interval timer | |
| 939 INCI surface_interval ; NO - increment surface interval | |
| 940 return ; - done | |
| 941 inc_surface_interval_1: | |
| 942 bcf reset_surface_interval ; reset request flag | |
| 943 CLRI surface_interval ; reset surface interval timer | |
| 944 return ; done | |
| 0 | 945 |
| 946 ;============================================================================= | |
| 947 | |
| 582 | 948 END |