Mercurial > public > hwos_code
annotate src/start.asm @ 584:d63dec562d50
CNS fix
| author | heinrichsweikamp |
|---|---|
| date | Wed, 28 Feb 2018 10:24:54 +0100 |
| parents | b455b31ce022 |
| children | 05053910d668 |
| rev | line source |
|---|---|
| 0 | 1 ;============================================================================= |
| 2 ; | |
| 582 | 3 ; File start.asm REFACTORED VERSION V2.98 |
| 0 | 4 ; |
| 5 ; Startup subroutines | |
| 6 ; | |
| 7 ; Copyright (c) 2011, JD Gascuel, HeinrichsWeikamp, all right reserved. | |
| 8 ;============================================================================= | |
| 9 ; HISTORY | |
| 10 ; 2011-08-06 : [mH] moving from OSTC code | |
| 11 | |
| 582 | 12 #include "hwos.inc" ; Mandatory header |
| 13 #include "ms5541.inc" | |
| 14 #include "isr.inc" | |
| 15 #include "shared_definitions.h" ; Mailbox from/to p2_deco.c | |
| 16 #include "eeprom_rs232.inc" | |
| 17 #include "math.inc" | |
| 18 #include "tft.inc" | |
| 19 #include "surfmode.inc" | |
| 20 #include "wait.inc" | |
| 21 #include "rtc.inc" | |
| 22 #include "external_flash.inc" | |
| 23 #include "convert.inc" | |
| 24 #include "strings.inc" | |
| 25 #include "tft_outputs.inc" | |
| 26 #include "adc_lightsensor.inc" | |
| 27 #include "i2c.inc" | |
| 0 | 28 |
| 582 | 29 extern init_ostc |
| 30 extern option_restore_all | |
| 31 extern deco_setup | |
| 32 extern restore_decodata_from_eeprom | |
| 33 extern color_image | |
| 34 extern oPressureAdjust | |
| 35 extern option_reset | |
| 36 extern option_save | |
| 37 extern option_save_all | |
| 38 extern option_check_all | |
| 39 extern do_new_battery_select | |
| 40 extern use_old_batteries | |
| 41 extern use_old_prior_209 | |
| 0 | 42 |
| 43 ;============================================================================= | |
| 44 ; Reset vector: What to do on device wake-up and hard reset. | |
| 45 ; | |
| 582 | 46 reset_v code 0x00000 |
| 0 | 47 |
| 582 | 48 ; goto start |
| 49 goto 0x1FF00 ; Bootloader | |
| 50 | |
| 51 ORG 0x00004 ; Needed for second-level bootloader | |
| 0 | 52 goto start |
| 582 | 53 |
| 0 | 54 ;============================================================================= |
| 582 | 55 |
| 56 boot CODE | |
| 0 | 57 |
| 582 | 58 global start |
| 0 | 59 start: |
| 582 | 60 lfsr FSR0,0x000 ; Clear rambank 0-14 |
| 0 | 61 clear_rambank: |
| 62 clrf POSTINC0 | |
| 63 movlw 0x0F | |
| 582 | 64 cpfseq FSR0H ; Bank 14 done? |
| 65 bra clear_rambank ; clear... | |
| 0 | 66 |
| 582 | 67 call init_ostc |
| 0 | 68 |
| 582 | 69 ; Get button type from Bootloader-Info |
| 70 movlw .16 | |
| 71 movff WREG,analog_counter ; init averaging | |
| 72 bsf analog_switches | |
| 73 movlw 0x7C | |
| 74 movwf TBLPTRL | |
| 75 movlw 0xF7 | |
| 76 movwf TBLPTRH | |
| 77 movlw 0x01 | |
| 78 movwf TBLPTRU | |
| 79 TBLRD*+ ; Reads 0x07 for analog buttons | |
| 449 | 80 movlw 0x07 |
| 81 cpfseq TABLAT | |
| 582 | 82 bcf analog_switches |
| 475 | 83 |
| 84 ; read button polarity | |
| 582 | 85 movlw LOW .897 |
| 475 | 86 movwf EEADR |
| 582 | 87 movlw HIGH .897 |
| 475 | 88 movwf EEADRH |
| 582 | 89 call read_eeprom ; EEDATA into EEPROM@EEADR |
| 90 clrf EEADRH ; Reset EEADRH | |
| 91 movff EEDATA,button_polarity ; 0xFF (Both normal), 0x00 (Both inverted), 0x01 (Left inverted only), 0x02 (Right inverted only) | |
| 475 | 92 |
| 582 | 93 ; Air pressure compensation after reset |
| 94 call get_calibration_data ; get calibration data from pressure sensor | |
| 95 banksel common ; get_calibration_data uses isr_backup | |
| 0 | 96 |
| 582 | 97 call TFT_DisplayOff ; turn off display |
| 98 bsf LEDr ; turn on red LED | |
| 99 bcf pressure_refresh | |
| 100 ; First pass will not have valid temperature! | |
| 101 btfss pressure_refresh ; Air pressure compensation | |
| 0 | 102 bra $-2 |
| 582 | 103 ; Second pass |
| 0 | 104 bcf pressure_refresh |
| 582 | 105 btfss pressure_refresh ; Air pressure compensation |
| 0 | 106 bra $-2 |
| 582 | 107 bcf LEDr |
| 108 | |
| 0 | 109 clrf rel_pressure+0 |
| 110 clrf rel_pressure+1 | |
| 111 clrf surface_interval+0 | |
| 112 clrf surface_interval+1 | |
| 113 | |
| 582 | 114 SAFE_2BYTE_COPY amb_pressure, last_surfpressure |
| 0 | 115 |
| 582 | 116 movlw LOW max_surfpressure |
| 117 movff WREG,sub_a+0 ; max. "allowed" air pressure in mbar | |
| 118 movlw HIGH max_surfpressure | |
| 119 movff WREG,sub_a+1 ; max. "allowed" air pressure in mbar | |
| 0 | 120 movff last_surfpressure+0,sub_b+0 |
| 121 movff last_surfpressure+1,sub_b+1 | |
| 582 | 122 call subU16 ; sub_c = sub_a - sub_b |
| 123 btfss neg_flag ; Is 1080mbar < amb_pressure ? | |
| 124 bra start_copy_pressure ; NO: current air pressure is lower then "allowed" air pressure, ok! | |
| 0 | 125 |
| 582 | 126 ; not ok! Overwrite with max. "allowed" air pressure |
| 127 movlw LOW max_surfpressure | |
| 128 movff WREG,last_surfpressure+0 ; max. "allowed" air pressure in mbar | |
| 129 movlw HIGH max_surfpressure | |
| 130 movff WREG,last_surfpressure+1 ; max. "allowed" air pressure in mbar | |
| 0 | 131 |
| 132 start_copy_pressure: | |
| 133 movff last_surfpressure+0,last_surfpressure_15min+0 | |
| 134 movff last_surfpressure+1,last_surfpressure_15min+1 | |
| 135 movff last_surfpressure+0,last_surfpressure_30min+0 | |
| 582 | 136 movff last_surfpressure+1,last_surfpressure_30min+1 ; resets all air pressure registers |
| 560 | 137 |
| 138 ; initialize GF high (needed by deco engine for color-coding the GF value) | |
| 139 movff opt_GF_high,char_I_GF_High_percentage | |
| 140 | |
| 582 | 141 SAFE_2BYTE_COPY amb_pressure,int_I_pres_respiration ; breathing at surface |
| 142 movff int_I_pres_respiration+0,int_I_pres_surface+0 ; surface pressure | |
| 143 movff int_I_pres_respiration+1,int_I_pres_surface+1 | |
| 0 | 144 |
| 582 | 145 call deco_setup ; set up all model parameters (code located in simulator.asm) |
| 146 | |
| 147 call deco_clear_tissue ; Set all tissues to Pamb * N2_ratio (code located in p2_deco.c) | |
| 148 banksel common ; back to bank 1, needed after every return from C code | |
|
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149 |
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150 call rtc_init ; init clock |
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151 |
| 582 | 152 movlw HIGH .512 ; =2 |
| 153 movwf EEADRH | |
| 154 read_int_eeprom .0 | |
| 155 clrf EEADRH | |
| 156 movlw 0xAA | |
| 157 cpfseq EEDATA ; =0xAA | |
| 158 bra no_deco_restore ; No | |
| 159 call restore_decodata_from_eeprom ; Reload deco data and date/time from eeprom | |
| 160 no_deco_restore: | |
| 161 call deco_calc_dive_interval_1min ; calculate deco in surface mode | |
| 162 call deco_calc_desaturation_time ; calculate desaturation and no-fly time | |
| 163 banksel common | |
|
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164 |
| 0 | 165 bcf menubit ; clear menu flag |
| 215 | 166 |
| 582 | 167 ; Check for Power-on reset here |
| 168 | |
| 169 ; ***************************************************************************** | |
| 215 | 170 ; "new_battery_menu" and "use_old_batteries" 'goto' back to "power_on_return" |
| 582 | 171 ; ***************************************************************************** |
| 0 | 172 |
| 582 | 173 ; Try to migrate the old battery status from firmware 2.09 or earlier.. |
| 174 btfsc RCON,POR ; Was this a power-on reset? | |
| 175 call use_old_prior_209 ; No | |
|
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176 |
| 582 | 177 bcf use_old_batt_flag |
| 178 btfsc RCON,POR ; Was this a power-on reset? | |
| 179 bsf use_old_batt_flag ; No | |
| 180 | |
| 181 call lt2942_get_status ; Check for gauge IC | |
| 182 btfss battery_gauge_available ; cR or 2 hardware? | |
| 183 bra power_on_return2 ; no | |
| 215 | 184 |
| 582 | 185 movlw .30 |
| 186 movff WREG,opt_cR_button_right | |
| 187 movff WREG,opt_cR_button_left ; Reset on power-on reset | |
| 188 call piezo_config ; Yes, configure buttons | |
| 189 call piezo_config ; Yes, configure buttons (2 times) | |
| 0 | 190 |
|
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191 power_on_return2: |
| 0 | 192 ; check firmware and reset Custom Functions after an update |
| 193 movlw d'1' | |
| 582 | 194 movwf EEADR ; =1 |
| 195 movwf EEADRH ; =1 | |
| 196 call read_eeprom ; read current version x | |
| 197 movff EEDATA,lo | |
| 198 incf EEADR,F ; set to 0x102 | |
| 199 call read_eeprom ; read current version y | |
| 200 movff EEDATA,hi | |
| 201 clrf EEADRH ; Reset EEADRH | |
| 0 | 202 |
| 443 | 203 movlw softwareversion_x |
| 582 | 204 cpfseq lo ; compare version x |
| 205 bra check_firmware_new ; is not equal -> reset CF and store new version in EEPROM | |
| 0 | 206 |
| 207 movlw softwareversion_y | |
| 582 | 208 cpfseq hi ; compare version y |
| 209 bra check_firmware_new ; is not equal -> reset CF and store new version in EEPROM | |
| 210 bra restart ; x and y are equal -> do not reset cf | |
| 211 | |
| 0 | 212 check_firmware_new: |
| 582 | 213 call TFT_boot ; Initialize TFT (includes clear screen) |
| 214 clrf CCPR1L ; Backlight off | |
| 215 WIN_TOP .50 | |
| 216 WIN_LEFT .10 | |
| 217 movlw LOW 0x1E000 | |
| 218 movwf TBLPTRL | |
| 219 movlw HIGH 0x1E000 | |
| 220 movwf TBLPTRH | |
| 221 movlw UPPER 0x1E000 | |
| 222 movwf TBLPTRU | |
| 223 call color_image ; Show logo | |
| 0 | 224 call TFT_standard_color |
| 582 | 225 WIN_SMALL .10,.100 |
| 226 STRCPY_PRINT "Update successful!" ; Hard coded since language switch does not work here | |
| 227 WIN_SMALL .10,.140 | |
| 228 STRCPY "New Firmware: " | |
| 0 | 229 movlw softwareversion_x |
| 230 movwf lo | |
| 231 bsf leftbind | |
| 232 output_8 | |
| 233 PUTC "." | |
| 234 movlw softwareversion_y | |
| 235 movwf lo | |
| 45 | 236 output_99x |
| 0 | 237 bcf leftbind |
| 582 | 238 STRCAT_PRINT "" ; Print second row |
| 239 call TFT_Display_FadeIn ; Display resulting surface screen. | |
| 0 | 240 |
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241 |
| 582 | 242 ; place "after-update reset" here... |
| 243 lfsr FSR0,oPressureAdjust | |
| 244 call option_reset ; Reset FSR0 option to factory default. | |
| 245 lfsr FSR0,oPressureAdjust | |
| 246 call option_save ; Save in EEPROM | |
| 247 | |
| 248 rcall backup_flash_page ; backup the first 128 bytes from flash to EEPROM | |
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249 |
| 582 | 250 movlw d'1' ; store current version in EEPROM |
| 251 movwf EEADR ; =1 | |
| 252 movwf EEADRH ; =1 | |
| 0 | 253 movlw softwareversion_x |
| 582 | 254 movwf EEDATA |
| 255 call write_eeprom ; write version x | |
| 256 incf EEADR,F ; set to 0x102 | |
| 0 | 257 movlw softwareversion_y |
| 582 | 258 movwf EEDATA |
| 259 call write_eeprom ; write version y | |
| 260 clrf EEADRH ; Reset EEADRH | |
| 0 | 261 |
| 262 movlw .7 | |
| 263 movwf lo | |
| 264 check_firmware_new2: | |
| 265 ; Wait 1 second | |
| 266 bcf onesecupdate | |
| 267 btfss onesecupdate | |
| 268 bra $-2 | |
| 582 | 269 decfsz lo,F ; Wait 10 seconds... |
| 0 | 270 bra check_firmware_new2 |
| 271 | |
| 582 | 272 global restart |
| 0 | 273 restart: |
| 582 | 274 clrf STKPTR ; Never return from here |
| 275 clrf CCP1CON ; stop PWM | |
| 276 bcf PORTC,2 ; Pull PWM out to GND | |
|
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277 |
| 582 | 278 btfsc menubit ; Return from Menu/COMM mode or timeout? |
| 279 call option_save_all ; Yes, save all settings into EEPROM | |
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280 |
| 582 | 281 call option_restore_all ; Restore everything from EEPROM into RAM |
| 282 call option_check_all ; Check all options (and reset if not within their min/max boundaries) | |
| 283 call option_save_all ; Save all settings into EEPROM after they have been checked | |
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284 |
| 582 | 285 clrf flag1 ; clear all flags |
| 286 clrf flag2 | |
| 287 clrf flag3 | |
| 288 clrf flag4 | |
| 289 clrf flag5 | |
| 290 clrf flag6 | |
| 291 clrf flag7 | |
| 292 clrf flag8 | |
| 293 clrf flag9 | |
| 294 clrf flag10 | |
| 295 ; Do not clear flag11 (Sensor calibration and charger status) | |
| 296 clrf flag12 | |
| 297 ; Do not clear flag13 (Important hardware flags) | |
| 298 clrf flag14 | |
| 299 clrf hardware_flag ; hardware descriptor flag | |
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300 |
| 582 | 301 bsf tft_is_dimming ; TFT is dimming up (soon), ignore ambient sensor! |
| 236 | 302 |
| 582 | 303 ; configure hardware_flag byte |
| 304 bsf ambient_sensor ; Set flag | |
| 305 bsf optical_input ; Set flag | |
| 306 | |
| 307 call lt2942_get_status ; Check for gauge IC | |
| 308 btfss battery_gauge_available ; cR/2 hardware? | |
| 309 bra restart2 ; No | |
| 236 | 310 |
| 582 | 311 call lt2942_init ; Yes, init battery gauge IC |
| 312 bcf optical_input ; Clear flag | |
| 236 | 313 |
| 582 | 314 banksel 0xF16 |
| 315 bcf ANCON0,7 ; AN7 Digital input | |
| 316 banksel common | |
| 317 bcf lightsen_power ; Power-down ambient light sensor | |
| 318 bcf ambient_sensor ; Clear flag | |
| 319 nop | |
| 320 btfss PORTF,2 ; Light sensor available? | |
| 321 bsf ambient_sensor ; Yes. | |
| 322 banksel 0xF16 | |
| 323 bsf ANCON0,7 ; AN7 Analog again | |
| 324 banksel common | |
| 325 bsf lightsen_power ; Power-up ambient light sensor again | |
| 326 | |
| 243 | 327 restart2: |
| 582 | 328 btfsc vusb_in |
| 329 bra restart3 ; USB (and powered on) | |
| 330 bcf PORTE,0 ; Start comms | |
| 331 WAITMS d'1' | |
| 332 btfss vusb_in | |
| 333 bra restart3 ; USB (and powered off) | |
| 334 bsf ble_available ; ble available | |
| 335 | |
| 336 restart3: | |
| 337 bsf PORTE,0 ; Stop comms | |
| 338 btfsc ble_available ; ble available? | |
| 339 bra restart4 ; Yes, can't be a cR | |
| 340 btfss battery_gauge_available ; Rechargeable | |
| 341 bra restart4 ; No, can't be a cR | |
| 342 bsf analog_o2_input ; Set flag for analog | |
| 343 | |
| 344 ; The hardware_flag is now: | |
| 345 ; 0x11: 2 with BLE | |
| 346 ; 0x13: 2 with BLE & ambient | |
| 347 ; 0x05: cR | |
| 348 ; 0x0A: 3 | |
| 349 ; 0x1A: 3 with BLE | |
| 350 | |
| 249 | 351 restart4: |
| 0 | 352 ; Select high altitude (Fly) mode? |
| 353 movff last_surfpressure_30min+0,sub_b+0 | |
| 354 movff last_surfpressure_30min+1,sub_b+1 | |
| 582 | 355 movlw HIGH high_altitude_threshold |
| 0 | 356 movwf sub_a+1 |
| 582 | 357 movlw LOW high_altitude_threshold ; hard-wired 880mbar |
| 0 | 358 movwf sub_a+0 |
| 582 | 359 call subU16 ; sub_c = sub_a - sub_b |
| 360 btfss neg_flag ; result negative (ambient > 880mbar)? | |
| 361 bsf high_altitude_mode ; NO - set flag! | |
| 0 | 362 |
| 582 | 363 btfss analog_o2_input |
| 364 bsf TRISB,3 | |
| 365 btfss battery_gauge_available | |
| 366 bsf TRISG,0 | |
| 367 call ext_flash_disable_protection ; disable write protection for external flash | |
|
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368 |
| 582 | 369 bsf flip_screen ; flip 180° |
| 370 TSTOSS opt_flip_screen ; =1: Flip the screen | |
| 371 bcf flip_screen ; normal orientation | |
| 372 | |
| 373 btfsc use_old_batt_flag ; =1: load old battery information after power-on reset | |
| 374 goto use_old_batteries ; returns to "surfloop"! | |
| 375 | |
| 376 btfsc RCON,POR ; was this a power-on reset? | |
| 377 goto surfloop ; jump to surface loop! | |
| 378 bsf RCON,POR ; set bit for next detection | |
| 379 ; Things to do after a power-on reset | |
| 380 goto do_new_battery_select ; returns to "surfloop"! | |
| 0 | 381 |
| 382 ;============================================================================= | |
| 383 ; Setup all flags and parameters for divemode and simulator computations. | |
| 384 ; | |
| 385 global restart_set_modes_and_flags | |
| 582 | 386 restart_set_modes_and_flags: ; "Call"ed from divemode, as well! |
| 387 call option_restore_all ; Restore everything from EEPROM | |
| 24 | 388 |
| 582 | 389 ; Setup sampling rate |
| 390 movlw .2 | |
| 391 movwf samplingrate | |
| 392 TSTOSS opt_sampling_rate ; =1: 10s, =0: 2s | |
| 393 bra restart_set_modes_and_flags1 | |
| 394 movlw .10 | |
| 395 movwf samplingrate | |
| 396 | |
| 24 | 397 restart_set_modes_and_flags1: |
| 582 | 398 bcf twosecupdate ; to have divemode routines in sync |
| 399 bcf FLAG_apnoe_mode | |
| 400 bcf FLAG_ccr_mode ; =1: CCR mode (Fixed ppO2 or Sensor) active | |
| 401 bcf FLAG_gauge_mode ; =1: In Gauge mode | |
| 402 bcf FLAG_pscr_mode | |
| 403 call disable_ir_s8 ; IR off | |
| 0 | 404 |
| 582 | 405 ; Setup char_I_saturation_multiplier and char_I_desaturation_multiplier |
| 406 movff opt_sat_multiplier_gf,char_I_saturation_multiplier | |
| 407 movff opt_desat_multiplier_gf,char_I_desaturation_multiplier | |
| 408 movff char_I_deco_model,lo ; 0 = ZH-L16, 1 = ZH-L16-GF | |
| 409 tstfsz lo | |
| 410 bra restart_set_modes_and_flags1b | |
| 411 movff opt_sat_multiplier_non_gf,char_I_saturation_multiplier | |
| 412 movff opt_desat_multiplier_non_gf,char_I_desaturation_multiplier | |
| 413 | |
| 414 restart_set_modes_and_flags1b: | |
| 415 movff opt_dive_mode,lo ; 0=OC, 1=CC, 2=Gauge, 3=Apnea, 4=PSCR | |
| 416 tstfsz lo | |
| 417 bra restart_set_modes_and_flags2 | |
| 418 | |
| 419 ; OC Mode | |
| 420 return | |
| 0 | 421 |
| 422 restart_set_modes_and_flags2: | |
| 582 | 423 decfsz lo,F |
| 424 bra restart_set_modes_and_flags3 | |
| 425 | |
| 426 ; CC Mode | |
| 427 btfsc analog_o2_input ; cR? | |
| 428 bra restart_set_modes_and_flags2b ; Yes, skip mode check | |
| 429 btfsc optical_input ; 3 | |
| 430 bra restart_set_modes_and_flags2b ; Yes, skip mode check | |
| 431 | |
| 432 ; Make sure Sensor is not selected | |
| 433 ; opt_ccr_mode must be <> 1 (=0: Fixed SP, =1: Sensor, =2: Auto SP (CCR only)) | |
| 434 banksel opt_ccr_mode | |
| 435 movlw .1 | |
| 436 cpfseq opt_ccr_mode ; = Sensor? | |
| 437 bra restart_set_modes_and_flags2b ; No | |
| 438 clrf opt_ccr_mode ; Yes, reset to Fixed SP | |
| 439 | |
| 359 | 440 restart_set_modes_and_flags2b: |
| 582 | 441 banksel common |
| 442 bsf FLAG_ccr_mode ; =1: CCR mode (Fixed SP, Auto SP or Sensor) active | |
| 443 call enable_ir_s8 ; Enable IR/S8-Port | |
| 444 return | |
| 0 | 445 |
| 446 restart_set_modes_and_flags3: | |
| 582 | 447 decfsz lo,F |
| 448 bra restart_set_modes_and_flags4 | |
| 449 | |
| 450 ; Gauge Mode | |
| 451 bsf FLAG_gauge_mode ; =1: In Gauge mode | |
| 452 return | |
| 0 | 453 |
| 454 restart_set_modes_and_flags4: | |
| 582 | 455 decfsz lo,F |
| 456 bra restart_set_modes_and_flags5 | |
| 457 ; Apnea Mode | |
| 458 bsf FLAG_apnoe_mode | |
| 459 return ; start in Surfacemode | |
| 0 | 460 |
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461 restart_set_modes_and_flags5: |
| 560 | 462 ; PSCR Mode |
| 463 btfsc analog_o2_input ; cR? | |
| 464 bra restart_set_modes_and_flags5b ; Yes, skip mode check | |
| 465 btfsc optical_input ; 3 | |
| 466 bra restart_set_modes_and_flags5b ; Yes, skip mode check | |
| 467 | |
| 468 ; Make sure Sensor is not selected | |
| 469 ; opt_ccr_mode must be <> 1 (=0: calculated ppO2, =1: Sensor, =2: Auto SP - not valid in pSCR, too) | |
| 470 banksel opt_ccr_mode | |
| 471 movlw .1 | |
| 472 cpfseq opt_ccr_mode ; = Sensor? | |
| 473 bra restart_set_modes_and_flags5b ; No | |
| 474 clrf opt_ccr_mode ; Yes, reset to calculated ppO2 | |
| 475 | |
| 476 restart_set_modes_and_flags5b: | |
| 477 banksel opt_ccr_mode | |
| 478 bcf opt_ccr_mode,1 ; in pSCR mode only calculated or Sensor, not 2 = Auto SP allowed | |
| 479 banksel common | |
| 480 bsf FLAG_pscr_mode | |
| 481 return ; start in Surfacemode | |
| 482 | |
| 582 | 483 |
| 484 ; backup the first 128bytes from flash to EEPROM | |
| 485 backup_flash_page: | |
| 486 ; Start address in internal flash | |
| 487 movlw 0x00 | |
| 488 movwf TBLPTRL | |
| 489 movwf TBLPTRH | |
| 490 movwf TBLPTRU | |
|
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
375
diff
changeset
|
491 |
| 582 | 492 movlw .128 |
| 493 movwf lo ; Byte counter | |
| 494 clrf EEADR | |
| 495 movlw .3 | |
| 496 movwf EEADRH ; Setup backup address | |
|
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
375
diff
changeset
|
497 |
| 582 | 498 TBLRD*- ; Dummy read to be in 128 byte block |
|
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
375
diff
changeset
|
499 backup_flash_loop: |
| 582 | 500 tblrd+* ; Table Read with Pre-Increment |
| 501 movff TABLAT,EEDATA ; put 1 byte | |
| 502 call write_eeprom ; save it in EEPROM | |
| 503 incf EEADR,F | |
| 504 decfsz lo,F ; 128byte done? | |
| 505 bra backup_flash_loop ; No | |
| 506 clrf EEADRH ; Reset EEADRH | |
| 507 return ; Done. | |
|
410
d3087a8ed7e1
BUGFIX: Fix rare issue after battery change (OSTC3 did not start properly)
heinrichsweikamp
parents:
375
diff
changeset
|
508 |
| 0 | 509 END |