Mercurial > public > hwos_code
annotate src/isr.asm @ 634:4050675965ea
3.10 stable release
| author | heinrichsweikamp |
|---|---|
| date | Tue, 28 Apr 2020 17:34:31 +0200 |
| parents | 185ba2f91f59 |
| children | 2737ddc643bb |
| rev | line source |
|---|---|
| 0 | 1 ;============================================================================= |
| 2 ; | |
| 634 | 3 ; File isr.asm * combined next generation V3.09.5 |
| 0 | 4 ; |
| 5 ; INTERUPT subroutines | |
| 6 ; | |
| 7 ; Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved. | |
| 8 ;============================================================================= | |
| 9 ; HISTORY | |
| 10 ; 2011-05-24 : [jDG] Cleanups from initial Matthias code. | |
| 11 | |
| 275 | 12 #include "hwos.inc" |
| 582 | 13 #include "shared_definitions.h" ; Mailbox from/to p2_deco.c |
| 0 | 14 #include "ms5541.inc" |
| 15 #include "adc_lightsensor.inc" | |
| 623 | 16 |
| 17 extern restore_flash | |
| 0 | 18 |
| 634 | 19 |
| 0 | 20 ;============================================================================= |
| 634 | 21 ; Code to be placed at a fixed Position |
| 623 | 22 ; |
| 604 | 23 isr_high CODE 0x0008 ; high priority interrupts |
| 634 | 24 bra HighInt ; jump to ISR |
| 25 | |
| 26 isr_low CODE 0x00018 ; low priority interrupts *** not used *** | |
| 27 retfie FAST ; do an immediate return from IRQ | |
| 28 ; | |
| 29 ;============================================================================= | |
| 623 | 30 |
| 0 | 31 |
| 634 | 32 ;----------------------------------------------------------------------------- |
| 33 ; Interrupt Dispatcher Entry Point | |
| 623 | 34 ; |
| 0 | 35 HighInt: |
| 623 | 36 ; initialize interrupt code |
| 37 banksel isr_backup ; default bank for all ISR code is bank ISR data | |
| 629 | 38 movff PRODL,PROD_backup+0 ; back-up PRODL |
| 39 movff PRODH,PROD_backup+1 ; back-up PRODH | |
| 623 | 40 ; serve buttons |
| 41 btfsc PIR1,TMR1IF ; timer 1 interrupt (button hold-down timer)? | |
| 42 rcall timer1int ; YES - reset timer | |
| 43 btfsc INTCON,INT0IF ; right button activity? | |
| 44 rcall isr_switch_right ; YES - check right switch | |
| 45 btfsc INTCON3,INT1IF ; left button activity? | |
| 46 rcall isr_switch_left ; YES - check left switch | |
| 0 | 47 |
| 623 | 48 IFDEF _external_sensor |
| 49 ; serve IR/S8 link timer | |
| 50 btfsc PIR3,RC2IF ; UART 2 interrupt? | |
| 51 rcall isr_uart2 ; YES - get a byte from the IR/S8 link | |
| 52 btfsc PIR2,TMR3IF ; timer 3 interrupt? | |
| 53 rcall isr_timer3 ; YES - check bytes received from IR/S8 link for being a valid telegram | |
| 629 | 54 ELSE |
| 55 bcf PIR3,RC2IF ; clear UART 2 interrupt | |
| 56 bcf PIR2,TMR3IF ; clear timer 3 interrupt | |
| 57 ; fill-up to keep code size identical to _external_sensor variant, see "Attention" below | |
| 58 nop | |
| 59 nop | |
| 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 |
| 629 | 71 movff PROD_backup+0,PRODL ; restore PRODL |
| 72 movff PROD_backup+1,PRODH ; restore PRODH | |
| 623 | 73 bsf trigger_isr_updates ; signal that the ISR had kicked in |
| 74 retfie FAST ; return from interrupt restoring BSR, STATUS and WREG | |
| 75 | |
| 113 | 76 |
| 634 | 77 ;----------------------------------------------------------------------------- |
| 78 ; CPU Speed Adjustment | |
| 623 | 79 ; |
| 80 isr_adjust_speed: | |
| 81 movff cpu_speed_request,cpu_speed_state ; acknowledge CPU speed request | |
| 0 | 82 |
| 623 | 83 btfsc speed_is_eco ; speed 'eco' requested? |
| 84 bra isr_set_speed_to_eco ; YES - set eco speed | |
| 85 btfsc speed_is_fastest ; NO - speed 'fastest' requested? | |
| 86 bra isr_set_speed_to_fastest ; YES - set fastest speed | |
| 87 ;bra isr_set_speed_to_normal ; NO - default to normal speed | |
| 0 | 88 |
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89 isr_set_speed_to_normal: |
| 629 | 90 clrf OSCTUNE ; switch off x4 PLL |
| 623 | 91 movlw b'01110010' ; select 16 MHz |
| 92 movwf OSCCON ; set prescaler | |
| 93 movlw T2CON_NORMAL ; PWM1 dimming factor for speed 'normal' | |
| 94 bra isr_adjust_speed_exit | |
| 95 | |
| 96 isr_set_speed_to_eco: | |
| 629 | 97 clrf OSCTUNE ; switch off x4 PLL |
| 623 | 98 movlw b'00110010' ; select 1 MHz |
| 99 movwf OSCCON ; set prescaler | |
| 100 movlw T2CON_ECO ; PWM1 dimming factor for speed 'eco' | |
| 101 bra isr_adjust_speed_exit | |
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|
102 |
| 623 | 103 isr_set_speed_to_fastest: |
| 104 movlw b'01110010' ; select 16 MHz by default | |
| 105 btfsc lv_core ; on OSTC with low voltage core? | |
| 106 movlw b'01100010' ; YES - reduce to 8 MHz | |
| 107 movwf OSCCON ; set prescaler | |
| 629 | 108 bsf OSCTUNE,6 ; switch on x4 PLL -> 64 MHz on high voltage core, 32 MHz on low voltage core |
| 623 | 109 movlw T2CON_FASTEST ; PWM1 dimming factor for speed 'fastest' |
| 110 ;bra isr_adjust_speed_exit | |
| 111 | |
| 112 isr_adjust_speed_exit: | |
| 629 | 113 movwf T2CON ; adjust PWM1 for LED dimming |
| 623 | 114 btfss OSCCON,HFIOFS ; PLL stabilized? |
| 115 bra isr_adjust_speed_exit ; NO - loop to give it some more time | |
| 116 return ; YES - done | |
| 117 | |
| 118 ; Attention: fill-up the gap between the end of this section | |
| 119 ; and the next section which starts at 0x00080 !! | |
| 629 | 120 ;nop |
| 623 | 121 |
| 122 block_0_code_end: ; marker to find end of code in block 0 in linker report file | |
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123 |
| 634 | 124 |
| 623 | 125 ;============================================================================= |
| 634 | 126 ; Code to be placed at a fixed Position: Jump-Vector for the Bootloader |
| 623 | 127 ; |
| 634 | 128 restore CODE 0x00080 ; restore first flash page from EEPROM |
| 129 | |
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130 restore_flash_0x00080: |
| 582 | 131 goto restore_flash |
| 634 | 132 ; |
| 133 ;============================================================================= | |
| 134 | |
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|
135 |
| 623 | 136 ;============================================================================= |
| 634 | 137 isr_handler CODE 0x00084 |
| 138 ;============================================================================= | |
| 139 | |
| 140 ;----------------------------------------------------------------------------- | |
| 141 ; Handle digitally-attached external Sensors | |
| 142 ; | |
| 143 ; take a byte received on IR/S8 link and slot it into the RX buffer | |
| 623 | 144 ; |
| 145 IFDEF _external_sensor | |
| 146 | |
| 147 isr_uart2: | |
| 634 | 148 bcf PIR3,RC2IF ; clear UART 2 interrupt flag |
| 623 | 149 banksel RCREG2 ; RC*2 is outside access RAM |
| 150 movff RCREG2,isr_lo ; copy received byte to isr_lo | |
| 151 bcf RCSTA2,CREN ; clear receiver status | |
| 152 bsf RCSTA2,CREN ; ... | |
| 153 banksel isr_backup ; back to default ISR bank | |
| 154 movlw .18 ; size of the buffer | |
| 155 cpfslt ir_s8_counter ; number of received bytes < buffer size? | |
| 156 bra isr_uart2_1 ; NO - buffer full, do not store the byte | |
| 157 movf ir_s8_counter,W ; YES - copy number of received bytes to WREG | |
| 158 MOVII FSR0L,FSR0_backup ; - back-up FSR0 | |
| 159 lfsr FSR0,ir_s8_buffer ; - load base address of buffer | |
| 160 movff isr_lo,PLUSW0 ; - store received byte | |
| 161 MOVII FSR0_backup,FSR0L ; - restore FSR0 | |
| 162 incf ir_s8_counter,F ; - increment number of received bytes by 1 | |
| 163 isr_uart2_1: | |
| 634 | 164 movlw .253 ; reload timer 3, high byte |
| 623 | 165 movwf TMR3H ; ... |
| 634 | 166 clrf TMR3L ; reload timer 3, low byte |
| 167 bsf T3CON,TMR3ON ; restart timer | |
| 168 return ; done | |
| 623 | 169 |
| 170 | |
| 634 | 171 ;----------------------------------------------------------------------------- |
| 172 ; Timeout on IR/S8 Link: check the Checksum and gather the received Data | |
| 623 | 173 ; |
| 174 isr_timer3: | |
| 604 | 175 bcf T3CON,TMR3ON ; stop timer 3 |
| 634 | 176 movlw .15 ; a IR telegram has 15 bytes |
| 604 | 177 cpfseq ir_s8_counter ; got exactly 15 bytes? |
| 623 | 178 bra isr_timer3_1 ; NO - test for 16 bytes |
| 604 | 179 bra isr_timer3_ir ; YES - got 15 bytes, compute local checksum |
| 0 | 180 isr_timer3_1: |
| 634 | 181 movlw .16 ; a IR telegram may also have 16 bytes, with last byte 0x00 |
| 604 | 182 cpfseq ir_s8_counter ; got exactly 16 bytes? |
| 623 | 183 bra isr_timer3_2 ; NO - test for 17 bytes |
| 604 | 184 tstfsz ir_s8_buffer+.15 ; YES - last byte = 0x00 ? |
| 634 | 185 bra isr_timer3_exit ; NO - exit |
| 604 | 186 bra isr_timer3_ir ; YES - got 16 bytes, compute local checksum |
| 113 | 187 isr_timer3_2: |
| 634 | 188 movlw .17 ; a S8 telegram has 17 bytes |
| 604 | 189 cpfseq ir_s8_counter ; got exactly 17 bytes? |
| 190 bra isr_timer3_exit ; NO - exit | |
| 191 bra isr_timer3_s8 ; YES - S8 data | |
| 0 | 192 |
| 634 | 193 ; process telegram received on IR link |
| 623 | 194 isr_timer3_ir: |
| 634 | 195 movlw .12 ; compute checksum over 1st and next 12 bytes |
| 623 | 196 rcall compute_IR_S8_checksum ; compute checksum |
| 634 | 197 tstfsz ir_s8_counter ; checksum ok? |
| 198 bra isr_timer3_exit ; NO - discard data | |
| 0 | 199 |
| 634 | 200 ; copy received data to respective variables |
| 623 | 201 movff ir_s8_buffer+.1, hud_status_byte |
| 202 movff ir_s8_buffer+.2, sensor1_mv+0 | |
| 203 movff ir_s8_buffer+.3, sensor1_mv+1 | |
| 204 movff ir_s8_buffer+.4, sensor2_mv+0 | |
| 205 movff ir_s8_buffer+.5, sensor2_mv+1 | |
| 206 movff ir_s8_buffer+.6, sensor3_mv+0 | |
| 207 movff ir_s8_buffer+.7, sensor3_mv+1 | |
| 208 movff ir_s8_buffer+.8, sensor1_ppO2 | |
| 209 movff ir_s8_buffer+.9, sensor2_ppO2 | |
| 210 movff ir_s8_buffer+.10,sensor3_ppO2 | |
| 582 | 211 movff ir_s8_buffer+.11,hud_battery_mv+0 |
| 212 movff ir_s8_buffer+.12,hud_battery_mv+1 | |
| 0 | 213 |
| 623 | 214 bsf hud_connection_ok ; set manually for hwHUD w/o the HUD module |
| 215 bra isr_timer3_reload ; reload timer and exit | |
| 216 | |
| 634 | 217 ; process telegram received on S8 link |
| 623 | 218 isr_timer3_s8: |
| 634 | 219 movlw .14 ; compute checksum over 1st and next 14 bytes |
| 623 | 220 rcall compute_IR_S8_checksum ; compute checksum |
| 634 | 221 tstfsz ir_s8_counter ; checksum ok? |
| 222 bra isr_timer3_exit ; NO - discard data | |
| 623 | 223 |
| 634 | 224 ; copy received data to respective variables |
| 225 movff ir_s8_buffer+.3, hud_status_byte ; also sets hud_connection_ok flag | |
| 623 | 226 movff ir_s8_buffer+.13,hud_battery_mv+0 |
| 227 movff ir_s8_buffer+.14,hud_battery_mv+1 | |
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228 |
| 634 | 229 ; btfsc trigger_S8_data_update ; last data already processed? |
| 230 ; bra isr_timer3_exit ; NO - skip copying new data (and not reload the timeout) | |
| 623 | 231 bsf trigger_S8_data_update ; YES - set flag for new data available |
| 582 | 232 |
| 634 | 233 ; copy more received data to respective variables |
| 623 | 234 movff ir_s8_buffer+.4, s8_rawdata_sensor1+0 |
| 235 movff ir_s8_buffer+.5, s8_rawdata_sensor1+1 | |
| 236 movff ir_s8_buffer+.6, s8_rawdata_sensor1+2 | |
| 237 movff ir_s8_buffer+.7, s8_rawdata_sensor2+0 | |
| 238 movff ir_s8_buffer+.8, s8_rawdata_sensor2+1 | |
| 239 movff ir_s8_buffer+.9, s8_rawdata_sensor2+2 | |
| 240 movff ir_s8_buffer+.10,s8_rawdata_sensor3+0 | |
| 241 movff ir_s8_buffer+.11,s8_rawdata_sensor3+1 | |
| 242 movff ir_s8_buffer+.12,s8_rawdata_sensor3+2 | |
| 243 | |
| 244 isr_timer3_reload: | |
| 634 | 245 movlw ir_timeout_value ; get timeout value (in multiples of 62.5 ms) |
| 246 movwf ir_s8_timeout ; reload timeout counter | |
| 0 | 247 isr_timer3_exit: |
| 634 | 248 clrf ir_s8_counter ; clear number of received bytes |
| 249 bcf PIR2,TMR3IF ; clear IRQ flag | |
| 250 return ; done | |
| 0 | 251 |
| 252 | |
| 634 | 253 ;----------------------------------------------------------------------------- |
| 254 ; Helper Function - Compute Checksum on Data in RX Buffer | |
| 623 | 255 ; |
| 256 compute_IR_S8_checksum: | |
| 257 movwf ir_s8_counter ; initialize loop counter from WREG | |
| 634 | 258 MOVII FSR0L,FSR0_backup ; back-up FSR0 |
| 259 lfsr FSR0,ir_s8_buffer ; load base address of the receive buffer | |
| 260 movff POSTINC0,isr_mpr+0 ; initialize low byte of the calculated checksum with first byte in buffer | |
| 261 clrf isr_mpr+1 ; clear the high byte of the calculated checksum | |
| 623 | 262 compute_IR_S8_checksum_loop: |
| 634 | 263 movf POSTINC0,W ; read next byte |
| 623 | 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 | |
| 634 | 267 decfsz ir_s8_counter,F ; decrement number of bytes yet to do, all done? |
| 623 | 268 bra compute_IR_S8_checksum_loop ; NO - loop |
| 634 | 269 movf POSTINC0,W ; YES - read low byte of the received checksum |
| 270 cpfseq isr_mpr+0 ; - equal to low byte of the calculated checksum? | |
| 271 incf ir_s8_counter,F ; NO - mark a checksum error | |
| 272 movf POSTINC0,W ; - read high byte of the received checksum | |
| 273 cpfseq isr_mpr+1 ; - equal to high byte of the calculated checksum? | |
| 274 incf ir_s8_counter,F ; NO - mark a checksum error | |
| 275 MOVII FSR0_backup,FSR0L ; - restore FSR0 | |
| 276 return ; - done | |
| 113 | 277 |
| 623 | 278 ENDIF ; _external_sensor |
| 113 | 279 |
| 0 | 280 |
| 634 | 281 ;----------------------------------------------------------------------------- |
| 282 ; Tasks every 62.5 ms: Buttons, Dimming, Pressure/Temperature Sensor and CPU Speed | |
| 623 | 283 ; |
| 284 isr_tmr7: | |
| 634 | 285 bcf PIE5,TMR7IE ; disable IRQs by TMR7 |
| 0 | 286 |
| 634 | 287 banksel 0xF16 ; TMR7H/L are not part of the access RAM |
| 288 movlw .248 ; reload timer 7, high byte (8x256 ticks -> 62.5 ms) | |
| 289 movwf TMR7H ; ... (keep low byte running ) | |
| 290 | |
| 291 call get_analog_switches ; get analog readings - bank-safe, but CAUTION: returns in bank common | |
| 292 banksel isr_backup ; back to ISR default bank | |
| 623 | 293 |
| 634 | 294 btfss INTCON3,INT1IE ; external IRQ 1 enabled? |
| 295 bra isr_tmr7_a ; NO - skip next | |
| 296 btfsc analog_sw2_pressed ; YES - analog switch 2 pressed? | |
| 297 rcall isr_switch_left ; NO - get digital readings of left switch | |
| 448 | 298 isr_tmr7_a: |
| 634 | 299 btfss INTCON,INT0IE ; external IRQ 0 enabled? |
| 300 bra isr_tmr7_b ; NO - skip next | |
| 301 btfsc analog_sw1_pressed ; YES - analog switch 1 pressed? | |
| 302 rcall isr_switch_right ; NO - get digital readings of right switch | |
| 448 | 303 isr_tmr7_b: |
| 623 | 304 btfss block_sensor_interrupt ; sensor interrupts disabled? |
| 604 | 305 bra isr_tmr7_c ; NO - continue |
| 634 | 306 bra sensor_int_state_exit ; YES - goto exit |
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307 isr_tmr7_c: |
| 623 | 308 movf max_CCPR1L,W ; dim value |
| 582 | 309 cpfseq CCPR1L ; = current PWM value? |
| 623 | 310 rcall isr_dimm_tft ; NO - adjust until max_CCPR1L = CCPR1L |
| 0 | 311 |
| 623 | 312 IFDEF _external_sensor |
| 634 | 313 decfsz ir_s8_timeout,F ; decrement IR/S8 timeout counter, became zero? |
| 314 bra isr_tmr7_2 ; NO - continue | |
| 315 movlw ir_timeout_value ; YES - get timeout value (in multiples of 62.5 ms) | |
| 316 movwf ir_s8_timeout ; - reload timeout timer | |
| 317 btfsc ext_input_optical ; - optical input in use? | |
| 318 bra isr_tmr7_1a ; YES - clear data | |
| 319 TSTOSS opt_s8_mode ; NO - S8 input in use? | |
| 623 | 320 bra isr_tmr7_2 ; NO - must be analog interface in use, keep data |
| 634 | 321 ;bra isr_tmr7_1a ; YES - clear data |
| 322 | |
| 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 ; ... | |
| 628 | 334 banksel s8_rawdata_sensor1 |
| 335 CLRI s8_rawdata_sensor1 ; clear all sensor data (raw data) | |
| 336 clrf s8_rawdata_sensor1+2 | |
| 337 CLRI s8_rawdata_sensor2 ; clear all sensor data (raw data) | |
| 338 clrf s8_rawdata_sensor2+2 | |
| 339 CLRI s8_rawdata_sensor3 ; clear all sensor data (raw data) | |
| 340 clrf s8_rawdata_sensor3+2 | |
| 623 | 341 banksel isr_backup ; back to ISR default bank |
| 342 | |
| 343 bsf trigger_S8_data_update ; signal a data update | |
| 344 ENDIF | |
| 582 | 345 |
| 0 | 346 isr_tmr7_2: |
| 623 | 347 btfsc block_sensor_interrupt ; sensor interrupts disabled? |
| 634 | 348 bra sensor_int_state_exit ; YES - goto exit |
| 0 | 349 |
| 350 isr_sensor_state2: | |
| 623 | 351 btfss sensor_state_counter,0 ; every 1/4 second |
| 352 bsf trigger_quarter_second ; set flag | |
| 353 | |
| 354 btfss speed_is_normal ; CPU running on normal speed? | |
| 355 rcall isr_set_speed_to_normal ; NO - set CPU speed to normal | |
| 582 | 356 |
| 623 | 357 ; update surface pressure |
| 358 btfss update_surface_pressure ; shall update the surface pressure? | |
| 359 bra isr_sensor_state2_1 ; NO | |
| 360 bcf update_surface_pressure ; YES - clear request flag | |
| 361 MOVII pressure_abs_ref,pressure_surf ; - update surface pressure | |
| 362 | |
| 363 isr_sensor_state2_1: | |
| 364 incf sensor_state_counter,F ; counts to eight for state machine | |
| 0 | 365 |
| 623 | 366 ; State 1: clear flags and average registers, get temperature (51 us) and start pressure integration (73.5 us) |
| 367 ; State 2: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 368 ; State 3: get temperature (51 us) and start pressure integration (73.5 us) | |
| 369 ; State 4: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 370 ; State 5: get temperature (51 us) and start pressure integration (73.5 us) | |
| 371 ; State 6: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 372 ; State 7: get temperature (51 us) and start pressure integration (73.5 us) | |
| 373 ; 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 | 374 |
| 623 | 375 movff sensor_state_counter,WREG ; WREG used as temp here... |
| 582 | 376 dcfsnz WREG,F |
| 623 | 377 bra sensor_int_state1_plus_restart ; do state 1 |
| 582 | 378 dcfsnz WREG,F |
| 623 | 379 bra sensor_int_state2 ; do state 2 |
| 582 | 380 dcfsnz WREG,F |
| 623 | 381 bra sensor_int_state1 ; do state 3 |
| 582 | 382 dcfsnz WREG,F |
| 623 | 383 bra sensor_int_state2 ; do state 4 |
| 582 | 384 dcfsnz WREG,F |
| 623 | 385 bra sensor_int_state1 ; do state 5 |
| 582 | 386 dcfsnz WREG,F |
| 623 | 387 bra sensor_int_state2 ; do state 6 |
| 582 | 388 dcfsnz WREG,F |
| 623 | 389 bra sensor_int_state1 ; do state 7 |
| 390 | |
| 391 ; first, do state 2: | |
| 392 call get_pressure_value ; state 2: get pressure (51 us) | |
| 393 call get_temperature_start ; and start temperature integration (73.5 us) | |
| 394 call calculate_compensation ; calculate temperature compensated pressure (27 us) | |
| 0 | 395 |
| 634 | 396 ; build average for pressure |
| 623 | 397 bcf STATUS,C ; clear carry bit |
| 398 rrcf pressure_abs_avg+1 ; divide by 2 | |
| 634 | 399 rrcf pressure_abs_avg+0 ; ... |
| 623 | 400 bcf STATUS,C ; clear carry bit |
| 401 rrcf pressure_abs_avg+1 ; divide by 2, again | |
| 634 | 402 rrcf pressure_abs_avg+0 ; ... |
| 623 | 403 |
| 634 | 404 ; export averaged pressure |
| 405 MOVII pressure_abs_avg,pressure_abs ; export result | |
| 0 | 406 |
| 634 | 407 ; build average for temperature |
| 623 | 408 bcf STATUS,C ; clear carry bit by default |
| 409 btfsc temperature_avg+1,7 ; sign bit set? | |
| 410 bsf STATUS,C ; YES - copy sign bit to carry bit | |
| 411 rrcf temperature_avg+1 ; divide signed temperature by 2 | |
| 412 rrcf temperature_avg+0 ; ... | |
| 413 bcf STATUS,C ; clear carry bit by default | |
| 414 btfsc temperature_avg+1,7 ; sign bit set? | |
| 415 bsf STATUS,C ; YES - copy sign bit to carry bit | |
| 416 rrcf temperature_avg+1 ; divide signed temperature by 2 again (by 4 in total now) | |
| 417 rrcf temperature_avg+0 ; ... | |
| 418 MOVII temperature_avg,temperature_cur ; store final result | |
| 0 | 419 |
| 634 | 420 ; check for temperature change |
| 623 | 421 movf temperature_cur+0,W ; get current temperature, low byte |
| 422 cpfseq temperature_last+0 ; compare with last temperature, equal? | |
| 423 bra isr_sensor_state2_2 ; NO - temperature has changed | |
| 424 movf temperature_cur+1,W ; get current temperature, high byte | |
| 425 cpfseq temperature_last+1 ; compare with last temperature, equal? | |
| 426 bra isr_sensor_state2_2 ; NO - temperature has changed | |
| 427 bra isr_sensor_state2_3 ; YES to both - no change | |
| 0 | 428 |
| 429 isr_sensor_state2_2: | |
| 623 | 430 MOVII temperature_cur,temperature_last ; store current temperature as last temperature for next round |
| 431 bsf trigger_temp_changed ; set flag for temperature change | |
| 432 | |
| 0 | 433 isr_sensor_state2_3: |
| 629 | 434 ; reset state counter |
| 623 | 435 clrf sensor_state_counter ; reset state counter |
| 436 btfss reset_max_pressure ; shall clear the max pressure? | |
| 437 bra isr_sensor_state2_3a ; NO - continue with checking for pressure change | |
| 438 bcf reset_max_pressure ; YES - clear request flag | |
| 439 CLRI pressure_rel_max ; - clear max. pressure | |
| 0 | 440 |
| 623 | 441 isr_sensor_state2_3a: |
| 442 ; check for pressure change | |
| 443 movf pressure_abs+0,W ; get current pressure, low byte | |
| 444 cpfseq pressure_abs_last+0 ; compare with last pressure, equal? | |
| 445 bra isr_sensor_state2_4 ; NO - pressure has changed | |
| 446 movf pressure_abs+1,W ; YES - get current pressure, high byte | |
| 447 cpfseq pressure_abs_last+1 ; - compare with last pressure, equal? | |
| 448 bra isr_sensor_state2_4 ; NO - pressure has changed | |
| 449 bra isr_sensor_state2_5 ; YES - no change | |
| 450 | |
| 451 isr_sensor_state2_4: | |
| 452 MOVII pressure_abs,pressure_abs_last ; store current pressure as last pressure for next round | |
| 453 bsf trigger_pres_cur_changed ; signal a pressure change | |
| 454 | |
| 455 isr_sensor_state2_5: | |
| 456 ; compute relative pressure | |
| 457 movf pressure_surf+0,W ; get surface pressure, low byte | |
| 458 subwf pressure_abs+0,W ; WREG = pressure_abs - pressure_surf (low byte) | |
| 459 movwf pressure_rel_cur+0 ; store relative pressure, low byte | |
| 460 movf pressure_surf+1,W ; get surface pressure, high byte | |
| 461 subwfb pressure_abs+1,W ; WREG = pressure_abs - pressure_surf (high byte) | |
| 462 movwf pressure_rel_cur+1 ; store relative pressure, high byte | |
| 463 btfss STATUS,N ; relative pressure < 0 ? | |
| 464 bra isr_sensor_state2_6 ; NO - OK, keep result | |
| 465 CLRI pressure_rel_cur ; YES - set relative pressure to zero | |
| 0 | 466 |
| 623 | 467 isr_sensor_state2_6: |
| 468 ; check for new max relative pressure | |
| 469 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 470 subwf pressure_rel_max+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
| 471 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 472 subwfb pressure_rel_max+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
| 473 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
| 474 bra isr_sensor_state2_6a ; NO | |
| 475 MOVII pressure_rel_cur,pressure_rel_max ; YES - set new max rel pressure | |
| 476 bsf trigger_pres_max_changed ; - signal a pressure max change | |
| 477 | |
| 478 isr_sensor_state2_6a: | |
| 0 | 479 |
| 623 | 480 IFDEF _min_depth_option |
| 481 ; check if min/max pressures shall be reset | |
| 482 btfss reset_trip_pressure ; shall reset the resettable min/max pressures? | |
| 483 bra isr_sensor_state2_6b ; NO | |
| 484 bcf reset_trip_pressure ; YES - clear request flag | |
| 485 CLRI pressure_rel_max_trip ; - set max pressure to zero | |
| 486 SETI pressure_rel_min_trip ; - set min pressure to biggest value possible | |
| 487 isr_sensor_state2_6b: | |
| 488 ; check for new resettable max relative pressure | |
| 489 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 490 subwf pressure_rel_max_trip+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
| 491 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 492 subwfb pressure_rel_max_trip+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
| 493 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
| 494 bra isr_sensor_state2_6c ; NO - continue checking for min depth | |
| 495 MOVII pressure_rel_cur,pressure_rel_max_trip ; YES - set new max rel pressure | |
| 496 isr_sensor_state2_6c: | |
| 497 ; check for new resettable min relative pressure | |
| 498 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 499 subwf pressure_rel_min_trip+0,W ; WREG = pressure_rel_min - pressure_rel_cur (low byte) | |
| 500 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 501 subwfb pressure_rel_min_trip+1,W ; WREG = pressure_rel_min - pressure_rel_cur (high byte) | |
| 502 btfss STATUS,C ; result > 0, i.e. new min rel pressure? | |
| 503 bra sensor_int_state_exit ; NO - done | |
| 504 MOVII pressure_rel_cur,pressure_rel_min_trip ; YES - set new min rel pressure | |
| 505 ENDIF ; _min_depth_option | |
| 506 bra sensor_int_state_exit ; done | |
| 0 | 507 |
| 508 sensor_int_state1_plus_restart: | |
| 634 | 509 CLRI pressure_abs_avg ; clear average register for pressure |
| 510 CLRI temperature_avg ; clear average register for temperature | |
| 0 | 511 |
| 512 sensor_int_state1: | |
| 604 | 513 call get_temperature_value ; state 1: get temperature... |
| 514 call get_pressure_start ; ...and start pressure integration | |
| 582 | 515 bra sensor_int_state_exit |
| 0 | 516 |
| 517 sensor_int_state2: | |
| 604 | 518 call get_pressure_value ; state 2: get pressure (51 us)... |
| 519 call get_temperature_start ; ...and start temperature integration (73.5 us) | |
| 520 call calculate_compensation ; .. and calculate temperature compensated pressure (233 us) | |
| 582 | 521 |
| 0 | 522 sensor_int_state_exit: |
| 634 | 523 bcf PIR5,TMR7IF ; clear IRQ flag |
| 524 bsf PIE5,TMR7IE ; re-enable IRQs by TMR7 | |
| 623 | 525 bra isr_adjust_speed ; set/restore CPU speed and return |
| 526 | |
| 527 | |
| 634 | 528 ;----------------------------------------------------------------------------- |
| 529 ; Helper Function for Display Dimming | |
| 530 ; | |
| 623 | 531 isr_dimm_tft: ; adjust until max_CCPR1L = CCPR1L |
| 628 | 532 btfsc screen_type3 ; screen type 3 ? |
| 533 return ; YES - ignore, no dimming function with screen type 3 | |
| 623 | 534 btfsc tft_is_dimming ; is the display dimming? |
| 535 return ; YES - ignore | |
| 536 movf max_CCPR1L,W ; NO - proceed | |
| 628 | 537 cpfsgt CCPR1L ; - CCPR1L > max_CCPR1L ? |
| 538 bra isr_dimm_tft2 ; NO - dim up | |
| 539 decf CCPR1L,F ; YES - dim down | |
| 540 return ; - done | |
| 623 | 541 isr_dimm_tft2: |
| 628 | 542 movf max_CCPR1L,W ; |
| 543 sublw ambient_light_min_eco ; | |
| 623 | 544 cpfsgt CCPR1L ; CCPR1L > max_CCPR1L - ambient_light_min_eco ? |
| 545 bra isr_dimm_tft3 ; NO - dim up slow | |
| 628 | 546 movlw .10 ; YES - dim up faster (+10) |
| 547 addwf CCPR1L,F ; - add to dimming value | |
| 623 | 548 isr_dimm_tft3: |
| 628 | 549 incf CCPR1L,F ; - dim up (+1) |
| 550 return ; - done | |
| 623 | 551 |
| 582 | 552 |
| 634 | 553 ;----------------------------------------------------------------------------- |
| 554 ; RTC Interrupt (invoked every 0.5 Seconds) | |
| 623 | 555 ; |
| 556 isr_rtcc: | |
| 557 bcf PIR3,RTCCIF ; clear flag | |
| 558 bsf trigger_half_second ; set flag for a new 1/2 second has begun | |
| 559 btfsc reset_timebase ; shall reset the timebase? | |
| 560 bra isr_rtcc_1 ; YES - warp to new full second | |
| 561 btg timebase_0sec ; NO - toggle the 1/2 second timebase | |
| 562 btfsc timebase_0sec ; - did it toggled 1 -> 0 ? | |
| 563 return ; NO - on half second, done | |
| 0 | 564 |
| 623 | 565 isr_rtcc_1: |
| 566 ; new full second | |
| 567 bsf trigger_full_second ; set flag for a new 1/1 second has begun | |
| 568 | |
| 569 btfsc block_rtc_access ; ISR suspended from accessing the RTC? | |
| 570 bra isr_rtcc_2 ; YES | |
| 571 | |
| 572 banksel RTCCFG ; RTC registers are outside access RAM | |
| 582 | 573 bsf RTCCFG,RTCPTR1 |
| 623 | 574 bsf RTCCFG,RTCPTR0 |
| 575 banksel isr_backup ; back to ISR default bank | |
| 576 | |
| 577 movff RTCVALL,rtc_year ; read year in BCD | |
| 578 movff RTCVALH,rtc_day ; dummy read | |
| 579 movff RTCVALL,rtc_day ; read day in BCD | |
| 580 movff RTCVALH,rtc_month ; read month in BCD | |
| 581 movff RTCVALL,rtc_hour ; read hour in BCD | |
| 582 movff RTCVALH,rtc_secs ; dummy read | |
| 583 movff RTCVALL,rtc_secs ; read seconds in BCD | |
| 584 movff RTCVALH,rtc_mins ; read minutes in BCD | |
| 582 | 585 |
| 634 | 586 ; convert BCD to DEC and set registers |
| 623 | 587 movf rtc_mins,W |
| 588 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 589 movwf rtc_mins | |
| 590 movf rtc_secs,W | |
| 591 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 592 movwf rtc_secs | |
| 593 movf rtc_hour,W | |
| 594 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 595 movwf rtc_hour | |
| 596 movf rtc_month,W | |
| 597 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 598 movwf rtc_month | |
| 599 movf rtc_day,W | |
| 600 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 601 movwf rtc_day | |
| 602 movf rtc_year,W | |
| 603 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 604 movwf rtc_year | |
| 605 | |
| 606 isr_rtcc_2: | |
| 629 | 607 ; every full second - get ambient light level and set max_CCPR1L |
| 623 | 608 call get_ambient_level ; get ambient light level and set max_CCPR1L |
| 609 banksel isr_backup ; back to ISR default bank (for safety only) | |
| 610 | |
| 611 rcall isr_battery_gauge ; calculate the current charge consumption and add it to the battery gauge | |
| 612 rcall isr_update_uptime ; increment overall OSTC uptime | |
| 613 rcall isr_update_timeout ; process the timeout timer | |
| 614 | |
| 615 btfsc divemode ; in dive mode? | |
| 616 rcall isr_divemode_1sec ; YES - do the every second dive mode tasks | |
| 617 | |
| 629 | 618 ; increment surface interval counted in seconds |
| 623 | 619 btfsc divemode ; in dive mode? |
| 620 btfsc simulatormode ; YES - in simulator mode? | |
| 629 | 621 rcall inc_surface_interval_secs ; NO - YES - increment the surface interval (seconds timer) |
| 622 | |
| 623 ; reset the surface interval timers if requested | |
| 624 btfsc reset_surface_interval ; shall reset both surface interval timers? | |
| 634 | 625 rcall rst_surface_interval ; YES |
| 0 | 626 |
| 623 | 627 ; reset the timebase if requested |
| 628 btfss reset_timebase ; shall reset the timebase? | |
| 629 bra isr_rtcc_3 ; NO | |
| 630 bcf reset_timebase ; YES - clear request flag | |
| 631 clrf eventbase ; - clear all pending events | |
| 632 clrf timebase ; - clear all timebase flags | |
| 633 clrf timebase_secs ; - clear seconds timer | |
| 634 clrf timebase_mins ; - clear minutes timer | |
| 635 clrf simulator_time ; - clear minutes timer of simulator runtime as well | |
| 636 bsf trigger_half_second ; - set flag for a new 1/2 second has begun | |
| 637 bsf trigger_full_second ; - set flag for a new 1/1 second has begun | |
| 638 return ; - done | |
| 639 | |
| 640 isr_rtcc_3: | |
| 641 ; count-up the 2 seconds timebase timer | |
| 642 btg timebase_1sec ; toggle the 1 second timer bit | |
| 643 btfss timebase_1sec ; did it toggled 1 -> 0 ? | |
| 644 btg timebase_2sec ; YES - toggle the 2 seconds timer bit | |
| 645 | |
| 646 ; count-up the seconds timer | |
| 647 incf timebase_secs,F ; increment seconds timer (may temporary become 60 here) | |
| 648 movlw .59 ; max. for seconds timer | |
| 649 cpfsgt timebase_secs ; seconds timer > max.? | |
| 650 return ; NO - done | |
| 0 | 651 |
| 623 | 652 ; new full minute |
| 629 | 653 clrf timebase_secs ; reset timer |
| 654 bsf trigger_full_minute ; set flag for a new minute has begun | |
| 623 | 655 |
| 629 | 656 ; increment surface interval counted in minutes |
| 657 btfsc divemode ; in dive mode? | |
| 658 btfsc simulatormode ; YES - in simulator mode? | |
| 659 rcall inc_surface_interval_mins ; NO - YES - increment surface interval (minutes timer) | |
| 623 | 660 |
| 629 | 661 btfss simulatormode ; in simulator mode? |
| 662 bra isr_rtcc_4 ; NO | |
| 663 infsnz simulator_time,F ; YES - increment real runtime of the simulator, did wrap around (became zero)? | |
| 664 setf simulator_time ; YES - disallow wrap-around, keep at 255 instead | |
| 0 | 665 |
| 623 | 666 isr_rtcc_4: |
| 629 | 667 incf timebase_mins,F ; increment minutes timer |
| 668 movlw .59 ; max. for minutes timer | |
| 669 cpfsgt timebase_mins ; minutes timer > max.? | |
| 670 return ; NO - done | |
| 623 | 671 |
| 672 ; new full hour | |
| 629 | 673 clrf timebase_mins ; YES - reset timer |
| 674 bsf trigger_full_hour ; - set flag for a new hour has begun | |
| 675 return ; - done | |
| 623 | 676 |
| 677 ; increment overall OSTC uptime | |
| 678 isr_update_uptime: | |
| 634 | 679 incf uptime+0,F ; uptime++ |
| 680 clrf WREG ; ... | |
| 681 addwfc uptime+1,F ; ... | |
| 682 addwfc uptime+2,F ; ... | |
| 683 addwfc uptime+3,F ; ... | |
| 684 return ; done | |
| 582 | 685 |
| 623 | 686 ; process the timeout timer |
| 687 isr_update_timeout: | |
| 634 | 688 btfsc restart_timeout ; shall restart the timeout? |
| 623 | 689 bra isr_update_timeout_1 ; YES |
| 690 tstfsz isr_timeout_timer ; NO - timeout timer already at zero? | |
| 634 | 691 decfsz isr_timeout_timer,F ; NO - decrement timer, reached zero now? |
| 623 | 692 return ; YES / NO - nothing further to do |
| 693 bsf trigger_timeout ; YES - set timeout flag | |
| 694 return ; - done | |
| 695 isr_update_timeout_1: | |
| 634 | 696 bcf restart_timeout ; clear request flag |
| 623 | 697 bcf trigger_timeout ; clear pending timeout trigger, if any |
| 698 movff isr_timeout_reload,isr_timeout_timer ; reload timer | |
| 699 return ; done | |
| 0 | 700 |
| 634 | 701 |
| 702 ;----------------------------------------------------------------------------- | |
| 703 ; Calculate Charge drawn from the Battery | |
| 623 | 704 ; |
| 705 isr_battery_gauge: | |
| 706 btfsc block_battery_gauge ; access to battery gauge suspended? | |
| 707 return ; YES - done | |
| 708 MOVLI current_sleepmode,isr_mpr ; NO - default to sleep mode with 100µA/3600 -> nAs | |
| 709 btfss sleepmode ; - in sleep mode? | |
| 634 | 710 rcall isr_battery_gauge2 ; NO - compute current consumption into isr_lo and isr_hi |
| 711 movf isr_mpr+0,W ; - 48 bit add of isr_mpr:2 to battery_gauge:6 | |
| 712 addwf battery_gauge+0,F ; - ... | |
| 713 movf isr_mpr+1,W ; - ... | |
| 714 addwfc battery_gauge+1,F ; - ... | |
| 715 clrf WREG ; - ... | |
| 716 addwfc battery_gauge+2,F ; - ... | |
| 717 addwfc battery_gauge+3,F ; - ... | |
| 718 addwfc battery_gauge+4,F ; - ... | |
| 719 addwfc battery_gauge+5,F ; - ... | |
| 720 return ; - done | |
| 582 | 721 |
| 634 | 722 |
| 723 ;----------------------------------------------------------------------------- | |
| 724 ; Helper Function - compute current Consumption | |
| 725 ; | |
| 0 | 726 isr_battery_gauge2: |
| 634 | 727 ; Set consumption rate in nAs (nano Ampere x seconds) |
| 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) |
| 631 | 734 movlw .70 ; screen type 3 has a fix backlight current slope |
| 735 btfss screen_type3 ; does the OSTC have a screen type 3 ? | |
| 736 movf CCPR1L,W ; NO - for screen types 0, 1 and 2 get the slope from CCPR1L | |
| 737 mullw current_backlight_multi ; multiply with backlight factor current_backlight_multi | |
| 738 ADDLI current_backlight_offset,PRODL ; add backlight offset current_backlight_offset | |
| 623 | 739 MOVII PRODL,isr_mpr ; copy result to isr_mpr |
| 0 | 740 |
| 634 | 741 ; add current for CPU and GPU |
| 623 | 742 ; cpu_speed_state = ECO 3.10 mA -> 861 nAs |
| 743 ; = NORMAL 5.50 mA -> 1528 nAs | |
| 744 ; = FASTEST 8.04 mA -> 2233 nAs | |
| 745 btfss speed_is_eco ; speed = eco ? | |
| 746 bra isr_battery_gauge3 ; NO | |
| 747 ADDLI current_speed_eco,isr_mpr ; YES - add current_speed_eco to isr_mpr | |
| 582 | 748 bra isr_battery_gauge5 |
| 0 | 749 isr_battery_gauge3: |
| 623 | 750 btfss speed_is_normal ; speed = normal? |
| 751 bra isr_battery_gauge4 ; NO | |
| 752 ADDLI current_speed_normal,isr_mpr ; YES - add current_speed_normal to isr_mpr | |
| 582 | 753 bra isr_battery_gauge5 |
| 0 | 754 isr_battery_gauge4: |
| 623 | 755 ADDLI current_speed_fastest,isr_mpr ; speed is fastest, add current_speed_fastest to isr_mpr |
| 0 | 756 isr_battery_gauge5: |
| 623 | 757 btfss ir_power ; IR enabled? |
| 758 bra isr_battery_gauge6 ; NO | |
| 759 ADDLI current_ir_receiver,isr_mpr ; YES - add current_ir_receiver to isr_mpr | |
| 0 | 760 isr_battery_gauge6: |
| 623 | 761 btfss compass_enabled ; compass active? |
| 762 bra isr_battery_gauge7 ; NO | |
| 763 ADDLI current_compass,isr_mpr ; YES - add current_compass to isr_mpr | |
| 0 | 764 isr_battery_gauge7: |
| 634 | 765 return ; done |
| 0 | 766 |
| 623 | 767 |
| 634 | 768 ;----------------------------------------------------------------------------- |
| 769 ; Every Second Tasks while in Dive Mode | |
| 623 | 770 ; |
| 0 | 771 isr_divemode_1sec: |
| 623 | 772 decfsz sampling_timer,F ; decrement sampling timer, became zero? |
| 773 bra isr_divemode_1sec_1 ; NO | |
| 774 bsf trigger_sample_divedata ; YES - set trigger flag for sampling dive data | |
| 775 movff sampling_rate,sampling_timer; - reload timer | |
| 0 | 776 |
| 623 | 777 isr_divemode_1sec_1: |
| 778 btfss reset_timebase ; shall reset the timebase? (request flag will be cleared later) | |
| 779 bra isr_divemode_1sec_2 ; NO | |
| 780 CLRI total_divetime_secs ; YES - reset total dive time, seconds (2 byte) | |
| 781 clrf counted_divetime_secs ; - reset counted dive time, seconds (1 byte) | |
| 782 CLRI counted_divetime_mins ; - reset counted dive time, minutes (2 byte) | |
| 783 clrf apnoe_dive_secs ; - reset apnoe dive time, seconds (1 byte) | |
| 784 clrf apnoe_dive_mins ; - reset apnoe dive time, minutes (1 byte) | |
| 785 bcf apnoe_at_surface ; - apnoe mode starts in submerged state | |
| 786 return ; - done | |
| 582 | 787 |
| 623 | 788 isr_divemode_1sec_2: |
| 789 INCI total_divetime_secs ; increase total dive time (regardless of start_dive_threshold) | |
| 790 btfss count_divetime ; shall the dive time be counted (regarding start_dive_threshold)? | |
| 629 | 791 bra isr_divemode_1sec_4 ; NO - too shallow / apnoe at surface |
| 623 | 792 incf counted_divetime_secs,F ; YES - increase dive time (displayed dive time) |
| 793 movlw d'59' ; - 60 seconds make a minute | |
| 794 cpfsgt counted_divetime_secs ; - next full minute reached? | |
| 629 | 795 bra isr_divemode_1sec_3 ; NO - continue |
| 623 | 796 clrf counted_divetime_secs ; YES - reset seconds to 0 |
| 797 INCI counted_divetime_mins ; - increase dive minutes | |
| 798 bsf divetime_longer_1min ; - set flag for dive time exceeding 1 minute | |
| 629 | 799 ;bra isr_divemode_1sec_3 ; - continue |
| 0 | 800 |
| 623 | 801 isr_divemode_1sec_3: ; submerged |
| 802 btfss FLAG_apnoe_mode ; in apnoe mode? | |
| 803 return ; NO - done | |
| 804 btfss apnoe_at_surface ; - been at surface before? | |
| 805 bra isr_divemode_1sec_3a ; NO - increment the dive time | |
| 806 bcf apnoe_at_surface ; YES - a new dive has begun | |
| 807 bsf apnoe_new_dive ; - signal a new dive has begun | |
| 808 clrf apnoe_surface_secs ; - clear surface seconds | |
| 809 clrf apnoe_surface_mins ; - clear surface minutes | |
| 810 clrf apnoe_dive_secs ; - clear dive seconds | |
| 811 clrf apnoe_dive_mins ; - clear dive minutes | |
| 812 MOVII pressure_rel_cur,pressure_rel_max ; - reset max pressure to current pressure | |
| 813 bsf trigger_pres_max_changed ; - signal a new maximum pressure | |
| 814 isr_divemode_1sec_3a: | |
| 815 incf apnoe_dive_secs,F ; increment dive time, seconds | |
| 816 movlw d'59' ; 60 seconds make a minute | |
| 817 cpfsgt apnoe_dive_secs ; next full minute reached? | |
| 818 return ; NO - done | |
| 819 clrf apnoe_dive_secs ; YES - reset seconds to 0 | |
| 820 incf apnoe_dive_mins,F ; - increment dive time, minutes | |
| 821 return ; - done | |
| 0 | 822 |
| 623 | 823 isr_divemode_1sec_4: ; at surface |
| 824 btfss FLAG_apnoe_mode ; in apnoe mode? | |
| 825 return ; NO - done | |
| 826 bsf apnoe_at_surface ; YES - memorize been at the surface | |
| 827 incf apnoe_surface_secs,F ; - increment surface time, seconds | |
| 828 movlw d'59' ; - 60 seconds make a minute | |
| 829 cpfsgt apnoe_surface_secs ; - next full minute reached? | |
| 830 return ; NO - done | |
| 831 clrf apnoe_surface_secs ; YES - reset seconds to 0 | |
| 832 incf apnoe_surface_mins,F ; - increment surface time, minutes | |
| 833 return ; - done | |
| 834 | |
| 835 | |
| 634 | 836 ;----------------------------------------------------------------------------- |
| 837 ; Helper Function - BCD to Binary conversion | |
| 838 ; | |
| 623 | 839 ; Input WREG = value in BCD |
| 840 ; Output WREG = value in binary | |
| 841 ; | |
| 842 isr_rtcc_convert_BCD_DEC: | |
| 634 | 843 movwf isr_lo ; copy BCD to isr_lo |
| 844 swapf isr_lo, W ; create swapped copy in WREG | |
| 845 andlw 0x0F ; keep only the tens | |
| 846 rlncf WREG, W ; WREG = 2 * tens | |
| 623 | 847 subwf isr_lo, F ; 16 * tens + ones - 2*tens |
| 848 subwf isr_lo, F ; 14 * tens + ones - 2*tens | |
| 849 subwf isr_lo, W ; 12 * tens + ones - 2*tens | |
| 634 | 850 return ; done |
| 0 | 851 |
| 852 | |
| 634 | 853 ;----------------------------------------------------------------------------- |
| 854 ; Check Buttons | |
| 623 | 855 ; |
| 582 | 856 isr_switch_right: |
| 634 | 857 bcf INTCON,INT0IE ; clear external interrupt 0 |
| 582 | 858 btfss flip_screen ; 180° flipped? |
| 634 | 859 bsf switch_right ; NO - set flag for right button |
| 582 | 860 btfsc flip_screen ; 180° flipped? |
| 634 | 861 bsf switch_left ; YES - set flag for left button |
| 862 bra isr_switch_common ; continue with common part | |
| 0 | 863 |
| 582 | 864 isr_switch_left: |
| 634 | 865 bcf INTCON3,INT1IE ; clear external interrupt 1 |
| 582 | 866 btfss flip_screen ; 180° flipped? |
| 634 | 867 bsf switch_left ; NO - set flag for left button |
| 582 | 868 btfsc flip_screen ; 180° flipped? |
| 634 | 869 bsf switch_right ; YES - set flag for right button |
| 870 ;bra isr_switch_common ; continue with common part | |
| 623 | 871 |
| 0 | 872 isr_switch_common: |
| 634 | 873 btfsc tmr5_preemtion_allowed ; timer 5 preemption allowed? |
| 874 bsf PIR5,TMR5IF ; YES - preempt timer 5 | |
| 875 movlw TMR1H_VALUE_FIRST ; load timer 1 (in steps of 7.8125 ms) | |
| 623 | 876 movwf TMR1H ; ... |
| 634 | 877 clrf TMR1L ; ... |
| 604 | 878 bsf T1CON,TMR1ON ; start timer 1 |
| 634 | 879 bcf INTCON3,INT1IF ; clear timer 1 IRQ request |
| 880 bcf INTCON,INT0IF ; clear timer 0 IRQ request | |
| 881 return ; done | |
| 0 | 882 |
| 623 | 883 |
| 634 | 884 ;----------------------------------------------------------------------------- |
| 885 ; Button hold-down Interrupt | |
| 623 | 886 ; |
| 0 | 887 timer1int: |
| 634 | 888 bcf PIR1,TMR1IF ; clear timer 1 IRQ request |
| 889 bcf INTCON,INT0IF ; clear timer 0 IRQ request | |
| 890 bcf INTCON3,INT1IF ; clear timer 1 IRQ request | |
| 891 | |
| 451 | 892 ; digital |
| 604 | 893 btfss switch_left1 ; left button hold-down? |
| 894 bra timer1int_left ; YES | |
| 895 btfss switch_right2 ; right button hold-down? | |
| 896 bra timer1int_right ; YES | |
| 582 | 897 |
| 623 | 898 ; analog |
| 604 | 899 btfsc analog_sw2_pressed ; left button hold-down? |
| 900 bra timer1int_left ; YES | |
| 901 btfsc analog_sw1_pressed ; right button hold-down? | |
| 902 bra timer1int_right ; YES | |
| 582 | 903 |
| 634 | 904 ; no button hold-down, stop timer 1 |
| 604 | 905 bcf T1CON,TMR1ON ; stop timer 1 |
| 634 | 906 bsf INTCON,INT0IE ; enable INT0 IRQ |
| 907 bsf INTCON3,INT1IE ; enable INT1 IRQ | |
| 451 | 908 return |
| 0 | 909 |
| 910 timer1int_left: | |
| 582 | 911 btfss flip_screen ; 180° flipped? |
| 634 | 912 bsf switch_left ; set flag for left button |
| 582 | 913 btfsc flip_screen ; 180° flipped? |
| 634 | 914 bsf switch_right ; set flag for right button |
| 604 | 915 bra timer1int_common ; continue |
| 623 | 916 |
| 0 | 917 timer1int_right: |
| 582 | 918 btfss flip_screen ; 180° flipped? |
| 634 | 919 bsf switch_right ; set flag for right button |
| 582 | 920 btfsc flip_screen ; 180° flipped? |
| 634 | 921 bsf switch_left ; set flag for left button |
| 623 | 922 ;bra timer1int_common ; continue |
| 923 | |
| 634 | 924 timer1int_common: ; load timer 1 for next button press |
| 623 | 925 movlw TMR1H_VALUE_CONT ; default to surface mode value |
| 926 btfsc divemode ; in dive mode? | |
| 927 movlw TMR1H_VALUE_CONT_DIVE ; YES - overwrite with dive mode value | |
| 928 movwf TMR1H ; write value to timer, high byte | |
| 634 | 929 clrf TMR1L ; write value to timer, low byte (zero) |
| 930 return ; done (timer1 kept running) | |
| 0 | 931 |
| 623 | 932 |
| 634 | 933 ;----------------------------------------------------------------------------- |
| 934 ; Increment Surface Interval (counted in minutes and in seconds) | |
| 623 | 935 ; |
| 936 ; int_O_desaturation_time is only computed while in start, surface mode, | |
| 629 | 937 ; menue_tree or ghostwriter. So the ISR may clock surface_interval_mins |
| 634 | 938 ; past the actual surface interval time. But TFT_surf_cv_lastdive will |
| 629 | 939 ; check int_O_desaturation_time and in case int_O_desaturation_time is |
| 940 ; zero it will not show surface_interval_mins but surface_interval_secs instead. | |
| 941 ; Thus the glitch will remain invisible. | |
| 623 | 942 ; |
| 634 | 943 inc_surface_interval_secs: ; called every second when not in dive mode |
| 944 incf surface_interval_secs+0,F ; increment the lowest byte | |
| 945 clrf WREG ; clear WREG | |
| 946 addwfc surface_interval_secs+1,F ; add carry from byte before, if it did wrap-around | |
| 947 addwfc surface_interval_secs+2,F ; add carry from byte before, if it did wrap-around | |
| 948 addwfc surface_interval_secs+3,F ; add carry from byte before, if it did wrap-around | |
| 949 return ; done | |
| 629 | 950 |
| 634 | 951 inc_surface_interval_mins: ; called every minute when not in dive mode |
| 952 movff int_O_desaturation_time+0,isr_lo ; get desaturation time, low byte | |
| 953 movff int_O_desaturation_time+1,WREG ; get desaturation time, high byte | |
| 954 iorwf isr_lo,W ; inclusive-or low & high byte, desaturation time = 0 ? | |
| 955 bz clr_surface_interval_mins ; YES - reset surface interval minutes counter | |
| 956 INCI surface_interval_mins ; NO - increment surface interval | |
| 957 return ; - done | |
| 629 | 958 |
| 631 | 959 rst_surface_interval: |
| 629 | 960 bcf reset_surface_interval ; reset request flag |
| 631 | 961 ; reset the surface interval counted in seconds |
| 629 | 962 clrf surface_interval_secs+0 ; reset surface interval (seconds), lowest byte |
| 963 clrf surface_interval_secs+1 ; ... | |
| 964 clrf surface_interval_secs+2 ; ... | |
| 965 clrf surface_interval_secs+3 ; reset surface interval (seconds), highest byte | |
| 631 | 966 ; reset the surface interval counted in minutes |
| 629 | 967 movff opt_diveTimeout,surface_interval_mins+0 ; set surface interval (minutes), low byte, to dive timeout offset |
| 968 clrf surface_interval_mins+1 ; reset surface interval (minutes), high byte | |
| 631 | 969 return ; done |
| 629 | 970 |
| 631 | 971 clr_surface_interval_mins: |
| 972 clrf surface_interval_mins+0 ; reset surface interval (minutes), low byte | |
| 973 clrf surface_interval_mins+1 ; reset surface interval (minutes), high byte | |
| 629 | 974 return ; done |
| 975 | |
| 634 | 976 ;----------------------------------------------------------------------------- |
| 0 | 977 |
| 582 | 978 END |