Mercurial > public > hwos_code
annotate src/isr.asm @ 638:a3b21497d17e
Merge
| author | heinrichsweikamp |
|---|---|
| date | Mon, 25 May 2020 17:36:50 +0200 |
| parents | 2737ddc643bb |
| children | 8c1f1f334275 |
| 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 | |
| 636 | 291 btfss update_surface_pressure ; shall update the surface pressure? |
| 292 bra isr_tmr7_0 ; NO - skip | |
| 293 bcf update_surface_pressure ; YES - clear request flag | |
| 294 MOVII pressure_abs_ref,pressure_surf ; - update surface pressure | |
| 295 | |
| 296 isr_tmr7_0: | |
| 634 | 297 call get_analog_switches ; get analog readings - bank-safe, but CAUTION: returns in bank common |
| 298 banksel isr_backup ; back to ISR default bank | |
| 623 | 299 |
| 634 | 300 btfss INTCON3,INT1IE ; external IRQ 1 enabled? |
| 301 bra isr_tmr7_a ; NO - skip next | |
| 302 btfsc analog_sw2_pressed ; YES - analog switch 2 pressed? | |
| 303 rcall isr_switch_left ; NO - get digital readings of left switch | |
| 448 | 304 isr_tmr7_a: |
| 634 | 305 btfss INTCON,INT0IE ; external IRQ 0 enabled? |
| 306 bra isr_tmr7_b ; NO - skip next | |
| 307 btfsc analog_sw1_pressed ; YES - analog switch 1 pressed? | |
| 308 rcall isr_switch_right ; NO - get digital readings of right switch | |
| 448 | 309 isr_tmr7_b: |
| 623 | 310 btfss block_sensor_interrupt ; sensor interrupts disabled? |
| 604 | 311 bra isr_tmr7_c ; NO - continue |
| 634 | 312 bra sensor_int_state_exit ; YES - goto exit |
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313 isr_tmr7_c: |
| 623 | 314 movf max_CCPR1L,W ; dim value |
| 582 | 315 cpfseq CCPR1L ; = current PWM value? |
| 623 | 316 rcall isr_dimm_tft ; NO - adjust until max_CCPR1L = CCPR1L |
| 0 | 317 |
| 623 | 318 IFDEF _external_sensor |
| 634 | 319 decfsz ir_s8_timeout,F ; decrement IR/S8 timeout counter, became zero? |
| 320 bra isr_tmr7_2 ; NO - continue | |
| 321 movlw ir_timeout_value ; YES - get timeout value (in multiples of 62.5 ms) | |
| 322 movwf ir_s8_timeout ; - reload timeout timer | |
| 323 btfsc ext_input_optical ; - optical input in use? | |
| 324 bra isr_tmr7_1a ; YES - clear data | |
| 325 TSTOSS opt_s8_mode ; NO - S8 input in use? | |
| 623 | 326 bra isr_tmr7_2 ; NO - must be analog interface in use, keep data |
| 634 | 327 ;bra isr_tmr7_1a ; YES - clear data |
| 328 | |
| 113 | 329 isr_tmr7_1a: |
| 623 | 330 clrf hud_status_byte ; S8/IR timeout clears all analog input readings to zero -> fallback will be triggered when in sensor mode |
| 331 CLRI hud_battery_mv ; clear battery voltage | |
| 582 | 332 |
| 623 | 333 banksel sensor1_mv ; select bank where sensor data are stored |
| 334 CLRI sensor1_mv ; clear all sensor data | |
| 335 CLRI sensor2_mv ; ... | |
| 336 CLRI sensor3_mv ; ... | |
| 337 clrf sensor1_ppO2 ; ... | |
| 338 clrf sensor2_ppO2 ; ... | |
| 339 clrf sensor3_ppO2 ; ... | |
| 628 | 340 banksel s8_rawdata_sensor1 |
| 341 CLRI s8_rawdata_sensor1 ; clear all sensor data (raw data) | |
| 342 clrf s8_rawdata_sensor1+2 | |
| 343 CLRI s8_rawdata_sensor2 ; clear all sensor data (raw data) | |
| 344 clrf s8_rawdata_sensor2+2 | |
| 345 CLRI s8_rawdata_sensor3 ; clear all sensor data (raw data) | |
| 346 clrf s8_rawdata_sensor3+2 | |
| 623 | 347 banksel isr_backup ; back to ISR default bank |
| 348 | |
| 349 bsf trigger_S8_data_update ; signal a data update | |
| 350 ENDIF | |
| 582 | 351 |
| 0 | 352 isr_tmr7_2: |
| 353 | |
| 636 | 354 ;isr_sensor_state2: |
| 623 | 355 btfss sensor_state_counter,0 ; every 1/4 second |
| 356 bsf trigger_quarter_second ; set flag | |
| 357 | |
| 358 btfss speed_is_normal ; CPU running on normal speed? | |
| 359 rcall isr_set_speed_to_normal ; NO - set CPU speed to normal | |
| 582 | 360 |
| 623 | 361 incf sensor_state_counter,F ; counts to eight for state machine |
| 0 | 362 |
| 623 | 363 ; State 1: clear flags and average registers, get temperature (51 us) and start pressure integration (73.5 us) |
| 364 ; State 2: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 365 ; State 3: get temperature (51 us) and start pressure integration (73.5 us) | |
| 366 ; State 4: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 367 ; State 5: get temperature (51 us) and start pressure integration (73.5 us) | |
| 368 ; State 6: get pressure (51 us), start temperature integration (73.5 us) and calculate temperature compensated pressure (233 us) | |
| 369 ; State 7: get temperature (51 us) and start pressure integration (73.5 us) | |
| 370 ; 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 | 371 |
| 623 | 372 movff sensor_state_counter,WREG ; WREG used as temp here... |
| 582 | 373 dcfsnz WREG,F |
| 623 | 374 bra sensor_int_state1_plus_restart ; do state 1 |
| 582 | 375 dcfsnz WREG,F |
| 623 | 376 bra sensor_int_state2 ; do state 2 |
| 582 | 377 dcfsnz WREG,F |
| 623 | 378 bra sensor_int_state1 ; do state 3 |
| 582 | 379 dcfsnz WREG,F |
| 623 | 380 bra sensor_int_state2 ; do state 4 |
| 582 | 381 dcfsnz WREG,F |
| 623 | 382 bra sensor_int_state1 ; do state 5 |
| 582 | 383 dcfsnz WREG,F |
| 623 | 384 bra sensor_int_state2 ; do state 6 |
| 582 | 385 dcfsnz WREG,F |
| 623 | 386 bra sensor_int_state1 ; do state 7 |
| 387 | |
| 388 ; first, do state 2: | |
| 389 call get_pressure_value ; state 2: get pressure (51 us) | |
| 390 call get_temperature_start ; and start temperature integration (73.5 us) | |
| 391 call calculate_compensation ; calculate temperature compensated pressure (27 us) | |
| 0 | 392 |
| 634 | 393 ; build average for pressure |
| 623 | 394 bcf STATUS,C ; clear carry bit |
| 395 rrcf pressure_abs_avg+1 ; divide by 2 | |
| 634 | 396 rrcf pressure_abs_avg+0 ; ... |
| 623 | 397 bcf STATUS,C ; clear carry bit |
| 398 rrcf pressure_abs_avg+1 ; divide by 2, again | |
| 634 | 399 rrcf pressure_abs_avg+0 ; ... |
| 623 | 400 |
| 634 | 401 ; export averaged pressure |
| 402 MOVII pressure_abs_avg,pressure_abs ; export result | |
| 0 | 403 |
| 634 | 404 ; build average for temperature |
| 623 | 405 bcf STATUS,C ; clear carry bit by default |
| 406 btfsc temperature_avg+1,7 ; sign bit set? | |
| 407 bsf STATUS,C ; YES - copy sign bit to carry bit | |
| 408 rrcf temperature_avg+1 ; divide signed temperature by 2 | |
| 409 rrcf temperature_avg+0 ; ... | |
| 410 bcf STATUS,C ; clear carry bit by default | |
| 411 btfsc temperature_avg+1,7 ; sign bit set? | |
| 412 bsf STATUS,C ; YES - copy sign bit to carry bit | |
| 413 rrcf temperature_avg+1 ; divide signed temperature by 2 again (by 4 in total now) | |
| 414 rrcf temperature_avg+0 ; ... | |
| 415 MOVII temperature_avg,temperature_cur ; store final result | |
| 0 | 416 |
| 634 | 417 ; check for temperature change |
| 623 | 418 movf temperature_cur+0,W ; get current temperature, low byte |
| 419 cpfseq temperature_last+0 ; compare with last temperature, equal? | |
| 420 bra isr_sensor_state2_2 ; NO - temperature has changed | |
| 421 movf temperature_cur+1,W ; get current temperature, high byte | |
| 422 cpfseq temperature_last+1 ; compare with last temperature, equal? | |
| 423 bra isr_sensor_state2_2 ; NO - temperature has changed | |
| 424 bra isr_sensor_state2_3 ; YES to both - no change | |
| 0 | 425 |
| 426 isr_sensor_state2_2: | |
| 623 | 427 MOVII temperature_cur,temperature_last ; store current temperature as last temperature for next round |
| 428 bsf trigger_temp_changed ; set flag for temperature change | |
| 429 | |
| 0 | 430 isr_sensor_state2_3: |
| 629 | 431 ; reset state counter |
| 623 | 432 clrf sensor_state_counter ; reset state counter |
| 433 btfss reset_max_pressure ; shall clear the max pressure? | |
| 434 bra isr_sensor_state2_3a ; NO - continue with checking for pressure change | |
| 435 bcf reset_max_pressure ; YES - clear request flag | |
| 436 CLRI pressure_rel_max ; - clear max. pressure | |
| 0 | 437 |
| 623 | 438 isr_sensor_state2_3a: |
| 439 ; check for pressure change | |
| 440 movf pressure_abs+0,W ; get current pressure, low byte | |
| 441 cpfseq pressure_abs_last+0 ; compare with last pressure, equal? | |
| 442 bra isr_sensor_state2_4 ; NO - pressure has changed | |
| 443 movf pressure_abs+1,W ; YES - get current pressure, high byte | |
| 444 cpfseq pressure_abs_last+1 ; - compare with last pressure, equal? | |
| 445 bra isr_sensor_state2_4 ; NO - pressure has changed | |
| 446 bra isr_sensor_state2_5 ; YES - no change | |
| 447 | |
| 448 isr_sensor_state2_4: | |
| 449 MOVII pressure_abs,pressure_abs_last ; store current pressure as last pressure for next round | |
| 450 bsf trigger_pres_cur_changed ; signal a pressure change | |
| 451 | |
| 452 isr_sensor_state2_5: | |
| 453 ; compute relative pressure | |
| 454 movf pressure_surf+0,W ; get surface pressure, low byte | |
| 455 subwf pressure_abs+0,W ; WREG = pressure_abs - pressure_surf (low byte) | |
| 456 movwf pressure_rel_cur+0 ; store relative pressure, low byte | |
| 457 movf pressure_surf+1,W ; get surface pressure, high byte | |
| 458 subwfb pressure_abs+1,W ; WREG = pressure_abs - pressure_surf (high byte) | |
| 459 movwf pressure_rel_cur+1 ; store relative pressure, high byte | |
| 460 btfss STATUS,N ; relative pressure < 0 ? | |
| 461 bra isr_sensor_state2_6 ; NO - OK, keep result | |
| 462 CLRI pressure_rel_cur ; YES - set relative pressure to zero | |
| 0 | 463 |
| 623 | 464 isr_sensor_state2_6: |
| 465 ; check for new max relative pressure | |
| 466 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 467 subwf pressure_rel_max+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
| 468 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 469 subwfb pressure_rel_max+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
| 470 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
| 471 bra isr_sensor_state2_6a ; NO | |
| 472 MOVII pressure_rel_cur,pressure_rel_max ; YES - set new max rel pressure | |
| 473 bsf trigger_pres_max_changed ; - signal a pressure max change | |
| 474 | |
| 475 isr_sensor_state2_6a: | |
| 0 | 476 |
| 623 | 477 IFDEF _min_depth_option |
| 478 ; check if min/max pressures shall be reset | |
| 479 btfss reset_trip_pressure ; shall reset the resettable min/max pressures? | |
| 480 bra isr_sensor_state2_6b ; NO | |
| 481 bcf reset_trip_pressure ; YES - clear request flag | |
| 482 CLRI pressure_rel_max_trip ; - set max pressure to zero | |
| 483 SETI pressure_rel_min_trip ; - set min pressure to biggest value possible | |
| 484 isr_sensor_state2_6b: | |
| 485 ; check for new resettable max relative pressure | |
| 486 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 487 subwf pressure_rel_max_trip+0,W ; WREG = pressure_rel_max - pressure_rel_cur (low byte) | |
| 488 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 489 subwfb pressure_rel_max_trip+1,W ; WREG = pressure_rel_max - pressure_rel_cur (high byte) | |
| 490 btfss STATUS,N ; result < 0, i.e. new max rel pressure? | |
| 491 bra isr_sensor_state2_6c ; NO - continue checking for min depth | |
| 492 MOVII pressure_rel_cur,pressure_rel_max_trip ; YES - set new max rel pressure | |
| 493 isr_sensor_state2_6c: | |
| 494 ; check for new resettable min relative pressure | |
| 495 movf pressure_rel_cur+0,W ; get current relative pressure, low byte | |
| 496 subwf pressure_rel_min_trip+0,W ; WREG = pressure_rel_min - pressure_rel_cur (low byte) | |
| 497 movf pressure_rel_cur+1,W ; get current relative pressure, high byte | |
| 498 subwfb pressure_rel_min_trip+1,W ; WREG = pressure_rel_min - pressure_rel_cur (high byte) | |
| 499 btfss STATUS,C ; result > 0, i.e. new min rel pressure? | |
| 500 bra sensor_int_state_exit ; NO - done | |
| 501 MOVII pressure_rel_cur,pressure_rel_min_trip ; YES - set new min rel pressure | |
| 502 ENDIF ; _min_depth_option | |
| 503 bra sensor_int_state_exit ; done | |
| 0 | 504 |
| 505 sensor_int_state1_plus_restart: | |
| 634 | 506 CLRI pressure_abs_avg ; clear average register for pressure |
| 507 CLRI temperature_avg ; clear average register for temperature | |
| 0 | 508 |
| 509 sensor_int_state1: | |
| 604 | 510 call get_temperature_value ; state 1: get temperature... |
| 511 call get_pressure_start ; ...and start pressure integration | |
| 582 | 512 bra sensor_int_state_exit |
| 0 | 513 |
| 514 sensor_int_state2: | |
| 604 | 515 call get_pressure_value ; state 2: get pressure (51 us)... |
| 516 call get_temperature_start ; ...and start temperature integration (73.5 us) | |
| 517 call calculate_compensation ; .. and calculate temperature compensated pressure (233 us) | |
| 582 | 518 |
| 0 | 519 sensor_int_state_exit: |
| 634 | 520 bcf PIR5,TMR7IF ; clear IRQ flag |
| 521 bsf PIE5,TMR7IE ; re-enable IRQs by TMR7 | |
| 623 | 522 bra isr_adjust_speed ; set/restore CPU speed and return |
| 523 | |
| 524 | |
| 634 | 525 ;----------------------------------------------------------------------------- |
| 526 ; Helper Function for Display Dimming | |
| 527 ; | |
| 623 | 528 isr_dimm_tft: ; adjust until max_CCPR1L = CCPR1L |
| 628 | 529 btfsc screen_type3 ; screen type 3 ? |
| 530 return ; YES - ignore, no dimming function with screen type 3 | |
| 623 | 531 btfsc tft_is_dimming ; is the display dimming? |
| 532 return ; YES - ignore | |
| 533 movf max_CCPR1L,W ; NO - proceed | |
| 628 | 534 cpfsgt CCPR1L ; - CCPR1L > max_CCPR1L ? |
| 535 bra isr_dimm_tft2 ; NO - dim up | |
| 536 decf CCPR1L,F ; YES - dim down | |
| 537 return ; - done | |
| 623 | 538 isr_dimm_tft2: |
| 628 | 539 movf max_CCPR1L,W ; |
| 540 sublw ambient_light_min_eco ; | |
| 623 | 541 cpfsgt CCPR1L ; CCPR1L > max_CCPR1L - ambient_light_min_eco ? |
| 542 bra isr_dimm_tft3 ; NO - dim up slow | |
| 628 | 543 movlw .10 ; YES - dim up faster (+10) |
| 544 addwf CCPR1L,F ; - add to dimming value | |
| 623 | 545 isr_dimm_tft3: |
| 628 | 546 incf CCPR1L,F ; - dim up (+1) |
| 547 return ; - done | |
| 623 | 548 |
| 582 | 549 |
| 634 | 550 ;----------------------------------------------------------------------------- |
| 551 ; RTC Interrupt (invoked every 0.5 Seconds) | |
| 623 | 552 ; |
| 553 isr_rtcc: | |
| 554 bcf PIR3,RTCCIF ; clear flag | |
| 555 bsf trigger_half_second ; set flag for a new 1/2 second has begun | |
| 556 btfsc reset_timebase ; shall reset the timebase? | |
| 557 bra isr_rtcc_1 ; YES - warp to new full second | |
| 558 btg timebase_0sec ; NO - toggle the 1/2 second timebase | |
| 559 btfsc timebase_0sec ; - did it toggled 1 -> 0 ? | |
| 560 return ; NO - on half second, done | |
| 0 | 561 |
| 623 | 562 isr_rtcc_1: |
| 563 ; new full second | |
| 564 bsf trigger_full_second ; set flag for a new 1/1 second has begun | |
| 565 | |
| 566 btfsc block_rtc_access ; ISR suspended from accessing the RTC? | |
| 567 bra isr_rtcc_2 ; YES | |
| 568 | |
| 569 banksel RTCCFG ; RTC registers are outside access RAM | |
| 582 | 570 bsf RTCCFG,RTCPTR1 |
| 623 | 571 bsf RTCCFG,RTCPTR0 |
| 572 banksel isr_backup ; back to ISR default bank | |
| 573 | |
| 574 movff RTCVALL,rtc_year ; read year in BCD | |
| 575 movff RTCVALH,rtc_day ; dummy read | |
| 576 movff RTCVALL,rtc_day ; read day in BCD | |
| 577 movff RTCVALH,rtc_month ; read month in BCD | |
| 578 movff RTCVALL,rtc_hour ; read hour in BCD | |
| 579 movff RTCVALH,rtc_secs ; dummy read | |
| 580 movff RTCVALL,rtc_secs ; read seconds in BCD | |
| 581 movff RTCVALH,rtc_mins ; read minutes in BCD | |
| 582 | 582 |
| 634 | 583 ; convert BCD to DEC and set registers |
| 623 | 584 movf rtc_mins,W |
| 585 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 586 movwf rtc_mins | |
| 587 movf rtc_secs,W | |
| 588 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 589 movwf rtc_secs | |
| 590 movf rtc_hour,W | |
| 591 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 592 movwf rtc_hour | |
| 593 movf rtc_month,W | |
| 594 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 595 movwf rtc_month | |
| 596 movf rtc_day,W | |
| 597 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 598 movwf rtc_day | |
| 599 movf rtc_year,W | |
| 600 rcall isr_rtcc_convert_BCD_DEC ; convert to decimal with result in WREG | |
| 601 movwf rtc_year | |
| 602 | |
| 603 isr_rtcc_2: | |
| 629 | 604 ; every full second - get ambient light level and set max_CCPR1L |
| 623 | 605 call get_ambient_level ; get ambient light level and set max_CCPR1L |
| 606 banksel isr_backup ; back to ISR default bank (for safety only) | |
| 607 | |
| 608 rcall isr_battery_gauge ; calculate the current charge consumption and add it to the battery gauge | |
| 609 rcall isr_update_uptime ; increment overall OSTC uptime | |
| 610 rcall isr_update_timeout ; process the timeout timer | |
| 611 | |
| 612 btfsc divemode ; in dive mode? | |
| 613 rcall isr_divemode_1sec ; YES - do the every second dive mode tasks | |
| 614 | |
| 629 | 615 ; increment surface interval counted in seconds |
| 623 | 616 btfsc divemode ; in dive mode? |
| 617 btfsc simulatormode ; YES - in simulator mode? | |
| 629 | 618 rcall inc_surface_interval_secs ; NO - YES - increment the surface interval (seconds timer) |
| 619 | |
| 620 ; reset the surface interval timers if requested | |
| 621 btfsc reset_surface_interval ; shall reset both surface interval timers? | |
| 634 | 622 rcall rst_surface_interval ; YES |
| 0 | 623 |
| 623 | 624 ; reset the timebase if requested |
| 625 btfss reset_timebase ; shall reset the timebase? | |
| 626 bra isr_rtcc_3 ; NO | |
| 627 bcf reset_timebase ; YES - clear request flag | |
| 628 clrf eventbase ; - clear all pending events | |
| 629 clrf timebase ; - clear all timebase flags | |
| 630 clrf timebase_secs ; - clear seconds timer | |
| 631 clrf timebase_mins ; - clear minutes timer | |
| 632 clrf simulator_time ; - clear minutes timer of simulator runtime as well | |
| 633 bsf trigger_half_second ; - set flag for a new 1/2 second has begun | |
| 634 bsf trigger_full_second ; - set flag for a new 1/1 second has begun | |
| 635 return ; - done | |
| 636 | |
| 637 isr_rtcc_3: | |
| 638 ; count-up the 2 seconds timebase timer | |
| 639 btg timebase_1sec ; toggle the 1 second timer bit | |
| 640 btfss timebase_1sec ; did it toggled 1 -> 0 ? | |
| 641 btg timebase_2sec ; YES - toggle the 2 seconds timer bit | |
| 642 | |
| 643 ; count-up the seconds timer | |
| 644 incf timebase_secs,F ; increment seconds timer (may temporary become 60 here) | |
| 645 movlw .59 ; max. for seconds timer | |
| 646 cpfsgt timebase_secs ; seconds timer > max.? | |
| 647 return ; NO - done | |
| 0 | 648 |
| 623 | 649 ; new full minute |
| 629 | 650 clrf timebase_secs ; reset timer |
| 651 bsf trigger_full_minute ; set flag for a new minute has begun | |
| 623 | 652 |
| 629 | 653 ; increment surface interval counted in minutes |
| 654 btfsc divemode ; in dive mode? | |
| 655 btfsc simulatormode ; YES - in simulator mode? | |
| 656 rcall inc_surface_interval_mins ; NO - YES - increment surface interval (minutes timer) | |
| 623 | 657 |
| 629 | 658 btfss simulatormode ; in simulator mode? |
| 659 bra isr_rtcc_4 ; NO | |
| 660 infsnz simulator_time,F ; YES - increment real runtime of the simulator, did wrap around (became zero)? | |
| 661 setf simulator_time ; YES - disallow wrap-around, keep at 255 instead | |
| 0 | 662 |
| 623 | 663 isr_rtcc_4: |
| 629 | 664 incf timebase_mins,F ; increment minutes timer |
| 665 movlw .59 ; max. for minutes timer | |
| 666 cpfsgt timebase_mins ; minutes timer > max.? | |
| 667 return ; NO - done | |
| 623 | 668 |
| 669 ; new full hour | |
| 629 | 670 clrf timebase_mins ; YES - reset timer |
| 671 bsf trigger_full_hour ; - set flag for a new hour has begun | |
| 672 return ; - done | |
| 623 | 673 |
| 674 ; increment overall OSTC uptime | |
| 675 isr_update_uptime: | |
| 634 | 676 incf uptime+0,F ; uptime++ |
| 677 clrf WREG ; ... | |
| 678 addwfc uptime+1,F ; ... | |
| 679 addwfc uptime+2,F ; ... | |
| 680 addwfc uptime+3,F ; ... | |
| 681 return ; done | |
| 582 | 682 |
| 623 | 683 ; process the timeout timer |
| 684 isr_update_timeout: | |
| 634 | 685 btfsc restart_timeout ; shall restart the timeout? |
| 623 | 686 bra isr_update_timeout_1 ; YES |
| 687 tstfsz isr_timeout_timer ; NO - timeout timer already at zero? | |
| 634 | 688 decfsz isr_timeout_timer,F ; NO - decrement timer, reached zero now? |
| 623 | 689 return ; YES / NO - nothing further to do |
| 690 bsf trigger_timeout ; YES - set timeout flag | |
| 691 return ; - done | |
| 692 isr_update_timeout_1: | |
| 634 | 693 bcf restart_timeout ; clear request flag |
| 623 | 694 bcf trigger_timeout ; clear pending timeout trigger, if any |
| 695 movff isr_timeout_reload,isr_timeout_timer ; reload timer | |
| 696 return ; done | |
| 0 | 697 |
| 634 | 698 |
| 699 ;----------------------------------------------------------------------------- | |
| 700 ; Calculate Charge drawn from the Battery | |
| 623 | 701 ; |
| 702 isr_battery_gauge: | |
| 703 btfsc block_battery_gauge ; access to battery gauge suspended? | |
| 704 return ; YES - done | |
| 705 MOVLI current_sleepmode,isr_mpr ; NO - default to sleep mode with 100µA/3600 -> nAs | |
| 706 btfss sleepmode ; - in sleep mode? | |
| 634 | 707 rcall isr_battery_gauge2 ; NO - compute current consumption into isr_lo and isr_hi |
| 708 movf isr_mpr+0,W ; - 48 bit add of isr_mpr:2 to battery_gauge:6 | |
| 709 addwf battery_gauge+0,F ; - ... | |
| 710 movf isr_mpr+1,W ; - ... | |
| 711 addwfc battery_gauge+1,F ; - ... | |
| 712 clrf WREG ; - ... | |
| 713 addwfc battery_gauge+2,F ; - ... | |
| 714 addwfc battery_gauge+3,F ; - ... | |
| 715 addwfc battery_gauge+4,F ; - ... | |
| 716 addwfc battery_gauge+5,F ; - ... | |
| 717 return ; - done | |
| 582 | 718 |
| 634 | 719 |
| 720 ;----------------------------------------------------------------------------- | |
| 721 ; Helper Function - compute current Consumption | |
| 722 ; | |
| 0 | 723 isr_battery_gauge2: |
| 634 | 724 ; Set consumption rate in nAs (nano Ampere x seconds) |
| 0 | 725 ; Example: |
| 623 | 726 ; MOVLI .55556,isr_mpr ; 0.2 Ah / 3600 seconds per hour * 1e9s = nAs |
| 727 ; | |
| 728 ; Remark: although all the constants are named current_xxxx, in reality they mean charge! | |
| 0 | 729 |
| 623 | 730 ; Calculate current consumption for LED backlight: 47*CCPR1L+272 (according to values in hwos.inc: 115*CCPR1L+216) |
| 631 | 731 movlw .70 ; screen type 3 has a fix backlight current slope |
| 732 btfss screen_type3 ; does the OSTC have a screen type 3 ? | |
| 733 movf CCPR1L,W ; NO - for screen types 0, 1 and 2 get the slope from CCPR1L | |
| 734 mullw current_backlight_multi ; multiply with backlight factor current_backlight_multi | |
| 735 ADDLI current_backlight_offset,PRODL ; add backlight offset current_backlight_offset | |
| 623 | 736 MOVII PRODL,isr_mpr ; copy result to isr_mpr |
| 0 | 737 |
| 634 | 738 ; add current for CPU and GPU |
| 623 | 739 ; cpu_speed_state = ECO 3.10 mA -> 861 nAs |
| 740 ; = NORMAL 5.50 mA -> 1528 nAs | |
| 741 ; = FASTEST 8.04 mA -> 2233 nAs | |
| 742 btfss speed_is_eco ; speed = eco ? | |
| 743 bra isr_battery_gauge3 ; NO | |
| 744 ADDLI current_speed_eco,isr_mpr ; YES - add current_speed_eco to isr_mpr | |
| 582 | 745 bra isr_battery_gauge5 |
| 0 | 746 isr_battery_gauge3: |
| 623 | 747 btfss speed_is_normal ; speed = normal? |
| 748 bra isr_battery_gauge4 ; NO | |
| 749 ADDLI current_speed_normal,isr_mpr ; YES - add current_speed_normal to isr_mpr | |
| 582 | 750 bra isr_battery_gauge5 |
| 0 | 751 isr_battery_gauge4: |
| 623 | 752 ADDLI current_speed_fastest,isr_mpr ; speed is fastest, add current_speed_fastest to isr_mpr |
| 0 | 753 isr_battery_gauge5: |
| 623 | 754 btfss ir_power ; IR enabled? |
| 755 bra isr_battery_gauge6 ; NO | |
| 756 ADDLI current_ir_receiver,isr_mpr ; YES - add current_ir_receiver to isr_mpr | |
| 0 | 757 isr_battery_gauge6: |
| 623 | 758 btfss compass_enabled ; compass active? |
| 759 bra isr_battery_gauge7 ; NO | |
| 760 ADDLI current_compass,isr_mpr ; YES - add current_compass to isr_mpr | |
| 0 | 761 isr_battery_gauge7: |
| 634 | 762 return ; done |
| 0 | 763 |
| 623 | 764 |
| 634 | 765 ;----------------------------------------------------------------------------- |
| 766 ; Every Second Tasks while in Dive Mode | |
| 623 | 767 ; |
| 0 | 768 isr_divemode_1sec: |
| 623 | 769 decfsz sampling_timer,F ; decrement sampling timer, became zero? |
| 770 bra isr_divemode_1sec_1 ; NO | |
| 771 bsf trigger_sample_divedata ; YES - set trigger flag for sampling dive data | |
| 772 movff sampling_rate,sampling_timer; - reload timer | |
| 0 | 773 |
| 623 | 774 isr_divemode_1sec_1: |
| 775 btfss reset_timebase ; shall reset the timebase? (request flag will be cleared later) | |
| 776 bra isr_divemode_1sec_2 ; NO | |
| 777 CLRI total_divetime_secs ; YES - reset total dive time, seconds (2 byte) | |
| 778 clrf counted_divetime_secs ; - reset counted dive time, seconds (1 byte) | |
| 779 CLRI counted_divetime_mins ; - reset counted dive time, minutes (2 byte) | |
| 780 clrf apnoe_dive_secs ; - reset apnoe dive time, seconds (1 byte) | |
| 781 clrf apnoe_dive_mins ; - reset apnoe dive time, minutes (1 byte) | |
| 782 bcf apnoe_at_surface ; - apnoe mode starts in submerged state | |
| 783 return ; - done | |
| 582 | 784 |
| 623 | 785 isr_divemode_1sec_2: |
| 786 INCI total_divetime_secs ; increase total dive time (regardless of start_dive_threshold) | |
| 787 btfss count_divetime ; shall the dive time be counted (regarding start_dive_threshold)? | |
| 629 | 788 bra isr_divemode_1sec_4 ; NO - too shallow / apnoe at surface |
| 623 | 789 incf counted_divetime_secs,F ; YES - increase dive time (displayed dive time) |
| 790 movlw d'59' ; - 60 seconds make a minute | |
| 791 cpfsgt counted_divetime_secs ; - next full minute reached? | |
| 629 | 792 bra isr_divemode_1sec_3 ; NO - continue |
| 623 | 793 clrf counted_divetime_secs ; YES - reset seconds to 0 |
| 794 INCI counted_divetime_mins ; - increase dive minutes | |
| 795 bsf divetime_longer_1min ; - set flag for dive time exceeding 1 minute | |
| 629 | 796 ;bra isr_divemode_1sec_3 ; - continue |
| 0 | 797 |
| 623 | 798 isr_divemode_1sec_3: ; submerged |
| 799 btfss FLAG_apnoe_mode ; in apnoe mode? | |
| 800 return ; NO - done | |
| 801 btfss apnoe_at_surface ; - been at surface before? | |
| 802 bra isr_divemode_1sec_3a ; NO - increment the dive time | |
| 803 bcf apnoe_at_surface ; YES - a new dive has begun | |
| 804 bsf apnoe_new_dive ; - signal a new dive has begun | |
| 805 clrf apnoe_surface_secs ; - clear surface seconds | |
| 806 clrf apnoe_surface_mins ; - clear surface minutes | |
| 807 clrf apnoe_dive_secs ; - clear dive seconds | |
| 808 clrf apnoe_dive_mins ; - clear dive minutes | |
| 809 MOVII pressure_rel_cur,pressure_rel_max ; - reset max pressure to current pressure | |
| 810 bsf trigger_pres_max_changed ; - signal a new maximum pressure | |
| 811 isr_divemode_1sec_3a: | |
| 812 incf apnoe_dive_secs,F ; increment dive time, seconds | |
| 813 movlw d'59' ; 60 seconds make a minute | |
| 814 cpfsgt apnoe_dive_secs ; next full minute reached? | |
| 815 return ; NO - done | |
| 816 clrf apnoe_dive_secs ; YES - reset seconds to 0 | |
| 817 incf apnoe_dive_mins,F ; - increment dive time, minutes | |
| 818 return ; - done | |
| 0 | 819 |
| 623 | 820 isr_divemode_1sec_4: ; at surface |
| 821 btfss FLAG_apnoe_mode ; in apnoe mode? | |
| 822 return ; NO - done | |
| 823 bsf apnoe_at_surface ; YES - memorize been at the surface | |
| 824 incf apnoe_surface_secs,F ; - increment surface time, seconds | |
| 825 movlw d'59' ; - 60 seconds make a minute | |
| 826 cpfsgt apnoe_surface_secs ; - next full minute reached? | |
| 827 return ; NO - done | |
| 828 clrf apnoe_surface_secs ; YES - reset seconds to 0 | |
| 829 incf apnoe_surface_mins,F ; - increment surface time, minutes | |
| 830 return ; - done | |
| 831 | |
| 832 | |
| 634 | 833 ;----------------------------------------------------------------------------- |
| 834 ; Helper Function - BCD to Binary conversion | |
| 835 ; | |
| 623 | 836 ; Input WREG = value in BCD |
| 837 ; Output WREG = value in binary | |
| 838 ; | |
| 839 isr_rtcc_convert_BCD_DEC: | |
| 634 | 840 movwf isr_lo ; copy BCD to isr_lo |
| 841 swapf isr_lo, W ; create swapped copy in WREG | |
| 842 andlw 0x0F ; keep only the tens | |
| 843 rlncf WREG, W ; WREG = 2 * tens | |
| 623 | 844 subwf isr_lo, F ; 16 * tens + ones - 2*tens |
| 845 subwf isr_lo, F ; 14 * tens + ones - 2*tens | |
| 846 subwf isr_lo, W ; 12 * tens + ones - 2*tens | |
| 634 | 847 return ; done |
| 0 | 848 |
| 849 | |
| 634 | 850 ;----------------------------------------------------------------------------- |
| 851 ; Check Buttons | |
| 623 | 852 ; |
| 582 | 853 isr_switch_right: |
| 634 | 854 bcf INTCON,INT0IE ; clear external interrupt 0 |
| 582 | 855 btfss flip_screen ; 180° flipped? |
| 634 | 856 bsf switch_right ; NO - set flag for right button |
| 582 | 857 btfsc flip_screen ; 180° flipped? |
| 634 | 858 bsf switch_left ; YES - set flag for left button |
| 859 bra isr_switch_common ; continue with common part | |
| 0 | 860 |
| 582 | 861 isr_switch_left: |
| 634 | 862 bcf INTCON3,INT1IE ; clear external interrupt 1 |
| 582 | 863 btfss flip_screen ; 180° flipped? |
| 634 | 864 bsf switch_left ; NO - set flag for left button |
| 582 | 865 btfsc flip_screen ; 180° flipped? |
| 634 | 866 bsf switch_right ; YES - set flag for right button |
| 867 ;bra isr_switch_common ; continue with common part | |
| 623 | 868 |
| 0 | 869 isr_switch_common: |
| 634 | 870 btfsc tmr5_preemtion_allowed ; timer 5 preemption allowed? |
| 871 bsf PIR5,TMR5IF ; YES - preempt timer 5 | |
| 872 movlw TMR1H_VALUE_FIRST ; load timer 1 (in steps of 7.8125 ms) | |
| 623 | 873 movwf TMR1H ; ... |
| 634 | 874 clrf TMR1L ; ... |
| 604 | 875 bsf T1CON,TMR1ON ; start timer 1 |
| 634 | 876 bcf INTCON3,INT1IF ; clear timer 1 IRQ request |
| 877 bcf INTCON,INT0IF ; clear timer 0 IRQ request | |
| 878 return ; done | |
| 0 | 879 |
| 623 | 880 |
| 634 | 881 ;----------------------------------------------------------------------------- |
| 882 ; Button hold-down Interrupt | |
| 623 | 883 ; |
| 0 | 884 timer1int: |
| 634 | 885 bcf PIR1,TMR1IF ; clear timer 1 IRQ request |
| 886 bcf INTCON,INT0IF ; clear timer 0 IRQ request | |
| 887 bcf INTCON3,INT1IF ; clear timer 1 IRQ request | |
| 888 | |
| 451 | 889 ; digital |
| 604 | 890 btfss switch_left1 ; left button hold-down? |
| 891 bra timer1int_left ; YES | |
| 892 btfss switch_right2 ; right button hold-down? | |
| 893 bra timer1int_right ; YES | |
| 582 | 894 |
| 623 | 895 ; analog |
| 604 | 896 btfsc analog_sw2_pressed ; left button hold-down? |
| 897 bra timer1int_left ; YES | |
| 898 btfsc analog_sw1_pressed ; right button hold-down? | |
| 899 bra timer1int_right ; YES | |
| 582 | 900 |
| 634 | 901 ; no button hold-down, stop timer 1 |
| 604 | 902 bcf T1CON,TMR1ON ; stop timer 1 |
| 634 | 903 bsf INTCON,INT0IE ; enable INT0 IRQ |
| 904 bsf INTCON3,INT1IE ; enable INT1 IRQ | |
| 451 | 905 return |
| 0 | 906 |
| 907 timer1int_left: | |
| 582 | 908 btfss flip_screen ; 180° flipped? |
| 634 | 909 bsf switch_left ; set flag for left button |
| 582 | 910 btfsc flip_screen ; 180° flipped? |
| 634 | 911 bsf switch_right ; set flag for right button |
| 604 | 912 bra timer1int_common ; continue |
| 623 | 913 |
| 0 | 914 timer1int_right: |
| 582 | 915 btfss flip_screen ; 180° flipped? |
| 634 | 916 bsf switch_right ; set flag for right button |
| 582 | 917 btfsc flip_screen ; 180° flipped? |
| 634 | 918 bsf switch_left ; set flag for left button |
| 623 | 919 ;bra timer1int_common ; continue |
| 920 | |
| 634 | 921 timer1int_common: ; load timer 1 for next button press |
| 623 | 922 movlw TMR1H_VALUE_CONT ; default to surface mode value |
| 923 btfsc divemode ; in dive mode? | |
| 924 movlw TMR1H_VALUE_CONT_DIVE ; YES - overwrite with dive mode value | |
| 925 movwf TMR1H ; write value to timer, high byte | |
| 634 | 926 clrf TMR1L ; write value to timer, low byte (zero) |
| 927 return ; done (timer1 kept running) | |
| 0 | 928 |
| 623 | 929 |
| 634 | 930 ;----------------------------------------------------------------------------- |
| 931 ; Increment Surface Interval (counted in minutes and in seconds) | |
| 623 | 932 ; |
| 933 ; int_O_desaturation_time is only computed while in start, surface mode, | |
| 629 | 934 ; menue_tree or ghostwriter. So the ISR may clock surface_interval_mins |
| 634 | 935 ; past the actual surface interval time. But TFT_surf_cv_lastdive will |
| 629 | 936 ; check int_O_desaturation_time and in case int_O_desaturation_time is |
| 937 ; zero it will not show surface_interval_mins but surface_interval_secs instead. | |
| 938 ; Thus the glitch will remain invisible. | |
| 623 | 939 ; |
| 634 | 940 inc_surface_interval_secs: ; called every second when not in dive mode |
| 941 incf surface_interval_secs+0,F ; increment the lowest byte | |
| 942 clrf WREG ; clear WREG | |
| 943 addwfc surface_interval_secs+1,F ; add carry from byte before, if it did wrap-around | |
| 944 addwfc surface_interval_secs+2,F ; add carry from byte before, if it did wrap-around | |
| 945 addwfc surface_interval_secs+3,F ; add carry from byte before, if it did wrap-around | |
| 946 return ; done | |
| 629 | 947 |
| 634 | 948 inc_surface_interval_mins: ; called every minute when not in dive mode |
| 949 movff int_O_desaturation_time+0,isr_lo ; get desaturation time, low byte | |
| 950 movff int_O_desaturation_time+1,WREG ; get desaturation time, high byte | |
| 951 iorwf isr_lo,W ; inclusive-or low & high byte, desaturation time = 0 ? | |
| 952 bz clr_surface_interval_mins ; YES - reset surface interval minutes counter | |
| 953 INCI surface_interval_mins ; NO - increment surface interval | |
| 954 return ; - done | |
| 629 | 955 |
| 631 | 956 rst_surface_interval: |
| 629 | 957 bcf reset_surface_interval ; reset request flag |
| 631 | 958 ; reset the surface interval counted in seconds |
| 629 | 959 clrf surface_interval_secs+0 ; reset surface interval (seconds), lowest byte |
| 960 clrf surface_interval_secs+1 ; ... | |
| 961 clrf surface_interval_secs+2 ; ... | |
| 962 clrf surface_interval_secs+3 ; reset surface interval (seconds), highest byte | |
| 631 | 963 ; reset the surface interval counted in minutes |
| 629 | 964 movff opt_diveTimeout,surface_interval_mins+0 ; set surface interval (minutes), low byte, to dive timeout offset |
| 965 clrf surface_interval_mins+1 ; reset surface interval (minutes), high byte | |
| 631 | 966 return ; done |
| 629 | 967 |
| 631 | 968 clr_surface_interval_mins: |
| 969 clrf surface_interval_mins+0 ; reset surface interval (minutes), low byte | |
| 970 clrf surface_interval_mins+1 ; reset surface interval (minutes), high byte | |
| 629 | 971 return ; done |
| 972 | |
| 634 | 973 ;----------------------------------------------------------------------------- |
| 0 | 974 |
| 582 | 975 END |