Mercurial > public > mk2
view code_part1/OSTC_code_asm_part1/divemode.asm @ 741:c498d6972087
minor cleanup
| author | heinrichsweikamp |
|---|---|
| date | Sun, 04 Aug 2013 18:14:05 +0200 |
| parents | 920afa50bb0b |
| children | 5760f2b689c5 |
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; OSTC - diving computer code ; Copyright (C) 2008 HeinrichsWeikamp GbR ; This program is free software: you can redistribute it and/or modify ; it under the terms of the GNU General Public License as published by ; the Free Software Foundation, either version 3 of the License, or ; (at your option) any later version. ; This program is distributed in the hope that it will be useful, ; but WITHOUT ANY WARRANTY; without even the implied warranty of ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ; GNU General Public License for more details. ; You should have received a copy of the GNU General Public License ; along with this program. If not, see <http://www.gnu.org/licenses/>. ; Mainroutines for divemode ; written by: Matthias Heinrichs, info@heinrichsweikamp.com ; written: 10/01/05 ; last updated: 15/05/08 ; known bugs: ; ToDo: diveloop: call diveloop_boot ; Boot tasks for all modes ; start timer3 for deco routine CPU usesage monitor movlw b'00000011' movwf T3CON ; Timer3 with 32768Hz clock running ; Startup Tasks for all modes ostc_debug 'R' ; Sends debug-information to screen if debugmode active call DISP_ClearScreen ; clean up DISPLAY call DISP_divemode_mask ; Display mask call DISP_temp_divemode ; Displays temperature call DISP_active_gas_divemode ; Display gas ; Reload last customview read_int_eeprom d'94' ; Read last selected customview dive mode into EEDATA movff EEDATA,menupos3 ; Copy to menupos3 call customview_toggle2 ; Show customview btfsc FLAG_apnoe_mode bsf realdive ; Set Realdive flag in Apnoe mode btfsc gauge_mode bra diveloop_loop ; Skip in gauge mode btfsc FLAG_apnoe_mode bra diveloop_loop ; Skip in apnoe mode ; Startup Tasks for deco modes call DISP_display_ndl_mask ; display "no stop" if not in gauge or apnoe mode btfss FLAG_const_ppO2_mode ; only in const_ppO2_mode bra diveloop_loop ; OC modes, skip bsf setpoint_changed ; Add a setpoint change to the first depth sample in CC mode bsf event_occured ; set global event flag diveloop_loop: ; The diveloop starts here btfss onesecupdate ; tasks any new second bra diveloop_loop3 btfsc gauge_mode ; Only in gauge mode bra diveloop_loop1a ; One Second Tasks in Gauge mode btfsc FLAG_apnoe_mode ; Only in apnoe mode bra diveloop_loop1b ; One Second Tasks in Apnoe mode ; Update divetime call customview_second ; Do every-second tasks for the custom view area GETCUSTOM8 d'38' ; Show seconds (=1?) movwf lo movlw d'1' cpfseq lo ; =1? bra diveloop_loop1y ; No, minutes only bsf update_divetime ; Set Update flag diveloop_loop1y: btfss update_divetime ; display new divetime? bra diveloop_loop1z ; No btfsc premenu ; Is the divemode menu active? bra diveloop_loop1z ; Yes call DISP_divemins ; Display (new) divetime! diveloop_loop1z: bcf update_divetime ; clear flag btfsc FLAG_const_ppO2_mode ; only in const_ppO2_mode bra diveloop_loop1c ; One Second Tasks in const_ppO2 mode ; Tasks only for OC modes btfsc show_safety_stop ; Show the safety stop? call DISP_show_safety_stop ; Yes, show/delete if done. call check_ppO2 ; check ppO2 and displays warning if required call calc_deko_divemode ; calculate decompression and display result (any two seconds) bra diveloop_loop1x ; Common Tasks ; Tasks only for Gauge mode diveloop_loop1a: btfss premenu ; Is the divemode menu active? call DISP_divemins ; display (new) divetime! call customview_second ; Do every-second tasks for the custom view area call timeout_divemode ; dive finished? This routine sets the required flags btfsc twosecupdate ; two seconds after the last call bra diveloop_loop1a2 ; Common Tasks bsf twosecupdate ; Routines used in the "other second" call calc_average_depth ; calculate average depth call calc_velocity ; calculate vertical velocity and display if > threshold (every two seconds) bra diveloop_loop1x ; Common Tasks diveloop_loop1a2: bcf twosecupdate bra diveloop_loop1x ; Common Tasks ; Tasks only for Apnoe mode diveloop_loop1b: call divemode_apnoe_tasks ; 1 sec. Apnoe tasks bra diveloop_loop1x ; Common Tasks ; Tasks only for ppO2 mode diveloop_loop1c: btfsc show_safety_stop ; Show the safety stop? call DISP_show_safety_stop ; Yes, show/delete if done. call DISP_const_ppO2_value ; display const ppO2 setting in [bar] call calc_deko_divemode ; calculate decompression and display result (any two seconds) btfsc is_bailout ; Are we in Bailout mode? call check_ppO2_bail ; Yes, display ppO2 (If required) bra diveloop_loop1x ; Common Tasks ; Common Tasks for all modes diveloop_loop1x: ; call customview_second ; Do every-second tasks for the custom view area ; ; GETCUSTOM8 d'38' ; Show seconds (=1?) ; movwf lo ; movlw d'1' ; cpfseq lo ; =1? ; bra diveloop_loop1y ; No, minutes only ; bsf update_divetime ; Set Update flag ;diveloop_loop1y: ; btfss update_divetime ; display new divetime? ; bra diveloop_loop1z ; No ; btfsc premenu ; Is the divemode menu active? ; bra diveloop_loop1z ; Yes ; call DISP_divemins ; Display (new) divetime! ; ;diveloop_loop1z: ; bcf update_divetime ; clear flag btfsc ppO2_show_value ; show ppO2? call check_ppO2 ; check ppO2 and displays warning if required call timeout_divemode ; dive finished? This routine sets the required flags btfsc low_battery_state ; If battery is low, then... call update_batt_voltage_divemode ; Display Battery Warning Text btfsc premenu ; is Menu? displayed? call timeout_premenu_divemode ; No, so check for timeout premenu btfsc menubit ; is the Dive mode menu displayed? call timeout_divemenu ; Yes, so check for timeout divemenu call set_leds_divemode ; Sets warnings, if required. Also Sets buzzer btfsc enter_error_sleep ; Enter Fatal Error Routine? call fatal_error_sleep ; Yes (In Sleepmode.asm!) bcf onesecupdate ; one seconds update done diveloop_loop3: btfss menubit ; Divemode menu active? call test_switches_divemode ; No, Check switches normal btfsc menubit ; Divemode menu active? call test_switches_divemode_menu ; Yes, check switches divemode menu btfss divemode ; Dive finished? goto end_dive ; Dive finished! btfsc pressure_refresh ; new pressure available? call update_divemode1 ; Yes, display new depth bcf pressure_refresh ; until new pressure is available btfsc oneminupdate ; one minute tasks call update_divemode60 ; Update clock, etc. btfsc store_sample ; store new sample? call store_dive_data ; Store profile data btfsc toggle_customview ; Next view? call customview_toggle ; Yes, show next customview (and delete this flag) btfsc simulatormode_active ; Is Simualtor mode active ? bra diveloop_loop4 ; YES: don't sleep btfsc menubit ; Sleep only with inactive menu... bra diveloop_loop5 bcf T0CON,TMR0ON ; Stop Timer0 before sleep nop sleep nop bra diveloop_loop ; Loop the divemode diveloop_loop4: ; And test screen dumps too! btfsc uart_dump_screen ; Asked to dump screen contains ? call dump_screen ; Yes! diveloop_loop5: bra diveloop_loop ; Loop the divemode timeout_premenu_divemode: incf timeout_counter3,F ; Yes... GETCUSTOM8 d'4' ; loads premenu_timeout into WREG cpfsgt timeout_counter3 ; ... longer then premenu_timeout return ; No! bcf premenu ; Yes, so clear "Menu?" and clear pre_menu bit call DISP_menu_clear ; Remove "Menu?" call DISP_divemode_mask ; And redraw mask (Redraw missing "T" from "Tauchzeit" in german text version) call DISP_divemins ; Redraw divetime return divemode_apnoe_tasks: ; 1 sec. Apnoe tasks call DISP_divemins ; display (new) divetime! call DISP_display_apnoe_descent ; Show descent timer btfsc divemode2 ; Time running? bra divemode_apnoe_tasks2 ; New descent, reset data if flag is set call DISP_display_apnoe_surface incf apnoe_surface_secs,F movlw d'60' cpfseq apnoe_surface_secs bra divemode_apnoe_tasks1 clrf apnoe_surface_secs incf apnoe_surface_mins,F divemode_apnoe_tasks1: bcf FLAG_active_descent ; Clear flag btfsc divemode2 ; Time running? return ; Yes, return bsf FLAG_active_descent ; Set Flag return divemode_apnoe_tasks2: btfss FLAG_active_descent ; Are descending? return ; No, We are at the surface call apnoe_calc_maxdepth ; Yes! divemode_apnoe_tasks3: call DISP_apnoe_clear_surface ; Clear Surface timer clrf apnoe_timeout_counter ; Delete timeout clrf apnoe_surface_secs clrf apnoe_surface_mins clrf apnoe_secs clrf apnoe_mins ; Reset Descent time clrf max_pressure+0 clrf max_pressure+1 ; Reset Max. Depth bcf FLAG_active_descent ; Clear flag return apnoe_calc_maxdepth: movff apnoe_max_pressure+0,sub_a+0 movff apnoe_max_pressure+1,sub_a+1 movff max_pressure+0,sub_b+0 movff max_pressure+1,sub_b+1 call sub16 ; sub_c = sub_a - sub_b ; apnoe_max_pressure<max_pressure -> neg_flag=1 ; max_pressure<=apnoe_max_pressure -> neg_flag=0 btfss neg_flag return ;apnoe_max_pressure<max_pressure movff max_pressure+0,apnoe_max_pressure+0 movff max_pressure+1,apnoe_max_pressure+1 return set_leds_divemode: movff char_O_gradient_factor,lo ; gradient factor absolute (Non-GF model) movff char_I_deco_model,hi decfsz hi,F ; jump over next line if char_I_deco_model == 1 movff char_O_relative_gradient_GF,lo ; gradient factor relative (GF model) GETCUSTOM8 d'14' ; threshold for LED warning into WREG cpfslt lo ; Lower then actual warning? rcall warn_gf1 ; No, show warning and set flags return ; Yes, return warn_gf1: movlw d'2' ; Type of alarm (Deco Stop missed/GF violated) movwf AlarmType ; Copy to alarm Register bsf event_occured ; Set Event Flag return calc_deko_divemode: btfsc twosecupdate ; two seconds after the last call bra calc_deko_divemode2 ; Yes, calculate and display deco data ("first second") bsf twosecupdate ; No, but next second! ; Routines used in the "other second" call calc_average_depth ; calculate average depth call calc_velocity ; calculate vertical velocity and display if > threshold (every two seconds) call set_reset_safety_stop ; Set flags for safety stop and/or reset safety stop ; Calculate CNS clrf WREG movff WREG,char_I_step_is_1min ; Make sure to be in 2sec mode. read_int_eeprom d'34' ; Read deco data movlw .6 cpfseq EEDATA ; in pscr-mode? rcall set_actual_ppo2 ; No, set char_I_actual_ppO2 calc_deko_divemode1a: call deco_calc_CNS_fraction ; calculate CNS movlb b'00000001' ; rambank 1 selected ; Check if CNS should be displayed movff char_O_CNS_fraction,lo ; copy into bank1 GETCUSTOM8 d'27' ; cns_display_high subwf lo,W btfsc STATUS,C call DISP_display_cns ; Show CNS call check_gas_change ; Checks if a better gas should be selected (by user) ;NOTE: always set full gas list, because the user can switch gas, ; even in NDL mode... ; Copy all gases to char_I_deco_N2_ratio and char_I_deco_He_ratio divemode_check_decogases: ; CALLed from Simulator, too ASSERT_BANK1 .10001 ; Just make sure everything is correct. clrf EEADRH ; Make sure to select eeprom bank 0 read_int_eeprom d'7' ; Read He ratio movff EEDATA,char_I_deco_He_ratio+0 ; And copy into hold register read_int_eeprom d'6' ; Read O2 ratio movff char_I_deco_He_ratio+0,WREG ; Get back He -> WREG addwf EEDATA,W ; O2 + He -> WREG sublw d'100' ; 100 - (O2 + He) -> WREG movff WREG, char_I_deco_N2_ratio+0; Push N2 to C code; read_int_eeprom d'11' ; Read He ratio movff EEDATA,char_I_deco_He_ratio+1 ; And copy into hold register read_int_eeprom d'10' ; Read O2 ratio movff char_I_deco_He_ratio+1,WREG ; Get back He -> WREG addwf EEDATA,W ; O2 + He -> WREG sublw d'100' ; 100 - (O2 + He) -> WREG movff WREG, char_I_deco_N2_ratio+1; Push N2 to C code; read_int_eeprom d'15' ; Read He ratio movff EEDATA,char_I_deco_He_ratio+2 ; And copy into hold register read_int_eeprom d'14' ; Read O2 ratio movff char_I_deco_He_ratio+2,WREG ; Get back He -> WREG addwf EEDATA,W ; O2 + He -> WREG sublw d'100' ; 100 - (O2 + He) -> WREG movff WREG, char_I_deco_N2_ratio+2; Push N2 to C code; read_int_eeprom d'19' ; Read He ratio movff EEDATA,char_I_deco_He_ratio+3 ; And copy into hold register read_int_eeprom d'18' ; Read O2 ratio movff char_I_deco_He_ratio+3,WREG ; Get back He -> WREG addwf EEDATA,W ; O2 + He -> WREG sublw d'100' ; 100 - (O2 + He) -> WREG movff WREG, char_I_deco_N2_ratio+3; Push N2 to C code; read_int_eeprom d'23' ; Read He ratio movff EEDATA,char_I_deco_He_ratio+4; And copy into hold register read_int_eeprom d'22' ; Read O2 ratio movff char_I_deco_He_ratio+4,WREG ; Get back He -> WREG addwf EEDATA,W ; O2 + He -> WREG sublw d'100' ; 100 - (O2 + He) -> WREG movff WREG, char_I_deco_N2_ratio+4; Push N2 to C code; ; Copy depth of enabled gas into char_I_deco_gas_change ; Note gaslist_active is inited in diveloop_boot, and edited by ; the de-activation menu. So don't reread it from eeprom here. read_int_eeprom d'28' ; read gas_change_depth Gas1 btfss gaslist_active,0 ; Apply depth? clrf EEDATA ; No, clear! movff EEDATA,char_I_deco_gas_change+0 ; Yes! read_int_eeprom d'29' ; read gas_change_depth Gas2 btfss gaslist_active,1 ; Apply depth? clrf EEDATA ; No, clear! movff EEDATA,char_I_deco_gas_change+1 ; Yes! read_int_eeprom d'30' ; read gas_change_depth Gas3 btfss gaslist_active,2 ; Apply depth? clrf EEDATA ; No, clear! movff EEDATA,char_I_deco_gas_change+2 ; Yes! read_int_eeprom d'31' ; read gas_change_depth Gas4 btfss gaslist_active,3 ; Apply depth? clrf EEDATA ; No, clear! movff EEDATA,char_I_deco_gas_change+3 ; Yes! read_int_eeprom d'32' ; read gas_change_depth Gas5 btfss gaslist_active,4 ; Apply depth? clrf EEDATA ; No, clear! movff EEDATA,char_I_deco_gas_change+4 ; Yes! return set_reset_safety_stop: ; Set flags for safety stop and/or reset safety stop GETCUSTOM8 d'65' ; Use safety stop decfsz WREG,F ; WREG=1? bra delete_safety_stop ; No, don't show safety stop btfsc dekostop_active ; Is a deco stop displayed? bra delete_safety_stop ; Yes, don't show safety stop ; Below "safety_stop_reset"? Set flag and reset count-down timer SAFE_2BYTE_COPY rel_pressure, lo call adjust_depth_with_salinity ; computes salinity setting into lo:hi [mbar] movff lo,sub_a+0 movff hi,sub_a+1 GETCUSTOM8 .73 ; Safety Stop Reset Depth [dm] mullw .10 movff PRODL,sub_b+0 movff PRODH,sub_b+1 call subU16 ; sub_c = sub_a - sub_b btfss neg_flag bra reset_safety_stop ; Below 10m, reset safety stop ; Above "safety_stop_end"? Clear flag. SAFE_2BYTE_COPY rel_pressure, lo call adjust_depth_with_salinity ; computes salinity setting into lo:hi [mbar] movff lo,sub_a+0 movff hi,sub_a+1 GETCUSTOM8 .72 ; Safety Stop End Depth [dm] mullw .10 movff PRODL,sub_b+0 movff PRODH,sub_b+1 call subU16 ; sub_c = sub_a - sub_b btfsc neg_flag bra delete_safety_stop ; Above 3m, remove safety stop ; Above "safety_stop_start"? Activate safety stop SAFE_2BYTE_COPY rel_pressure, lo call adjust_depth_with_salinity ; computes salinity setting into lo:hi [mbar] movff lo,sub_a+0 movff hi,sub_a+1 GETCUSTOM8 .71 ; Safety Stop Start Depth [dm] mullw .10 movff PRODL,sub_b+0 movff PRODH,sub_b+1 call subU16 ; sub_c = sub_a - sub_b btfsc neg_flag bra acivate_safety_stop ; Above 5m, activate safety stop bra reset_safety_stop2 ; Pause safety stop acivate_safety_stop: tstfsz safety_stop_countdown ; Countdown at zero? bsf show_safety_stop ; No, Set flag! return delete_safety_stop: clrf safety_stop_countdown ; reset timer bra reset_safety_stop2 ; Remove saftestop from display reset_safety_stop: GETCUSTOM8 .70 ; Safety Stop Duration [s] movwf safety_stop_countdown ; reset timer reset_safety_stop2: btfss safety_stop_active ; Safety stop shown return ; No, don't delete it bcf show_safety_stop ; Clear flag bcf safety_stop_active ; Clear flag call DISP_clear_decoarea ; Yes, Clear stop goto DISP_display_ndl_mask ; Show NDL again (And return) ;----------------------------------------------------------------------------- ; calculate ppO2 in 0.01bar (e.g. 150 = 1.50 bar ppO2) set_actual_ppo2: SAFE_2BYTE_COPY amb_pressure, xA ; P_amb in millibar (1000 = 1.00 bar). movlw d'10' movwf xB+0 clrf xB+1 call div16x16 ; xC=p_amb/10 (100 = 1.00 bar). movff xC+0,xA+0 movff xC+1,xA+1 movff char_I_O2_ratio,xB+0 clrf xB+1 call mult16x16 ; char_I_O2_ratio * (p_amb/10) movff xC+0,xA+0 movff xC+1,xA+1 movlw d'100' movwf xB+0 clrf xB+1 call div16x16 ; xC=(char_I_O2_ratio * p_amb/10)/100 ; Copy ppO2 for CNS calculation tstfsz xC+1 ; Is ppO2 > 2.55bar ? setf xC+0 ; yes: bound to 2.55... better than wrap around. movff xC+0, char_I_actual_ppO2 ; copy last ppO2 to buffer register btfsc FLAG_const_ppO2_mode ; do in const_ppO2_mode movff char_I_const_ppO2, char_I_actual_ppO2 ; copy last ppO2 to buffer register return reset_decompression_gases: ; reset the deco gas while in NDL ostc_debug 'F' ; Sends debug-information to screen if debugmode active lfsr FSR2,char_I_deco_gas_change clrf POSTINC2 ; Clear Gas1 clrf POSTINC2 clrf POSTINC2 clrf POSTINC2 clrf POSTINC2 ; Clear Gas5 return calc_deko_divemode2: bcf twosecupdate btfsc gauge_mode ; ignore decompression calculation in gauge mode return btfsc FLAG_apnoe_mode ; ignore decompression calculation in apnoe mode return ostc_debug 'B' ; Sends debug-information to screen if debugmode active ; Send nes state to screen, if debugmode active movff char_O_deco_status,WREG ; Status before call addlw '0' ; Convert to ascii char call ostc_debug1 ; and send. call divemode_prepare_flags_for_deco clrf WREG movff WREG,char_I_step_is_1min ; Force 2 second deco mode movff char_I_O2_ratio,lo_temp ; Backup original value for everything movff char_I_N2_ratio,hi_temp ; Backup original value for everything read_int_eeprom d'34' ; Read deco data movlw .6 cpfseq EEDATA bra calc_deko_divemode2a ; in PSCR mode, compute fO2 into char_I_O2_ratio call compute_pscr_ppo2 ; pSCR ppO2 into sub_c:2 movff sub_c+0,xA+0 movff sub_c+1,xA+1 movlw LOW .10 movwf xB+0 movlw HIGH .10 movwf xB+1 call mult16x16 ;xA*xB=xC -> xC:4 = ppO2*10 SAFE_2BYTE_COPY amb_pressure, xB call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder ; xC+0 has O2 in percent movff xC+0,char_I_O2_ratio movff char_I_He_ratio, wait_temp ; copy into bank1 register bsf STATUS,C ; Borrow bit movlw d'100' ; 100% subfwb wait_temp,W ; minus He bsf STATUS,C ; Borrow bit subfwb xC+0,W ; minus O2 movff WREG, char_I_N2_ratio ; = N2! calc_deko_divemode2a: clrf TMR3L nop ; See errata DS80284E-page 2 clrf TMR3H ; Reset Timer3 call deco_calc_hauptroutine ; calc_tissue movlb b'00000001' ; rambank 1 selected ostc_debug 'C' ; Sends debug-information to screen if debugmode active movff lo_temp,char_I_O2_ratio ; Restore original value for everything movff hi_temp,char_I_N2_ratio ; Restore original value for everything btfss debug_mode ; Are we in debugmode? bra calc_deko_divemode4 ; No... ; Show timer3 reading converted into ms (Error: +2,3%) in custom area movff TMR3L,lo movff TMR3H,hi bcf STATUS,C rrcf hi rrcf lo ;/2 bcf STATUS,C rrcf hi rrcf lo ;/4 bcf STATUS,C rrcf hi rrcf lo ;/8 bcf STATUS,C rrcf hi rrcf lo ;/16 bcf STATUS,C rrcf hi rrcf lo ;/32 WIN_TOP .216 WIN_LEFT .100 WIN_FONT FT_SMALL STRCPY "ms:" output_16 call word_processor calc_deko_divemode4: movff char_O_deco_status,WREG ; Is a compute cycle finished ? iorwf WREG,F btfss STATUS,Z return ; Return is status <> 0 ; Check if deco stops are necessary ? bcf decoplan_invalid ; The decoplan is valid movff char_O_first_deco_depth,wait_temp ; copy ceiling to temp register tstfsz wait_temp ; Ceiling<0m? bra calc_deko_divemode3 ; Yes! btfsc dekostop_active ; Already in nodeco mode ? call DISP_display_ndl_mask ; Clear deco data, display nostop time bcf dekostop_active ; clear flag clrf decodata+0 ; for profile memory movff char_O_nullzeit,decodata+1 ; nostop time call DISP_display_ndl ; display no deco limit calc_deko_divemode5: ; Check if extra cycles are needed to compute @5 variant: btfss tts_extra_time ; Is @5 displayed ? return ; No: don't compute it. decfsz apnoe_mins ; Reached count-down ? return ; No: don't compute yet. movlw .6 movff WREG,char_O_deco_status ; Stole next cycles for @5 variant. movlw .2 ; Restart countdown. movwf apnoe_mins return calc_deko_divemode3: btfss dekostop_active ; Already in deco mode ? call DISP_display_deko_mask ; clear nostop time, display decodata bsf dekostop_active ; Set flag movff char_O_first_deco_depth,decodata+0 ; ceiling movff char_O_first_deco_time,decodata+1 ; length of first stop in minues call DISP_display_deko ; display decodata bra calc_deko_divemode5 ;----------------------------------------------------------------------------- divemode_prepare_flags_for_deco: SAFE_2BYTE_COPY amb_pressure,int_I_pres_respiration ; copy result to deco routine GETCUSTOM8 d'11' ; Saturation multiplier % movff WREG,char_I_saturation_multiplier GETCUSTOM8 d'12' ; Desaturation multiplier % movff WREG,char_I_desaturation_multiplier GETCUSTOM8 d'16' ; Deco distance to decostop in 1/10 meter for simulation movff WREG,char_I_deco_distance GETCUSTOM8 d'29' ; Depth Last Deco in meter for simulation movff WREG,char_I_depth_last_deco movff divemins+0,int_I_divemins+0 ; Current dive time. movff divemins+1,int_I_divemins+1 goto restart_set_modes_and_flags ; Sets decomode (char_I_deco_model) and flags (again) ;----------------------------------------------------------------------------- store_dive_data: ; CF20 seconds gone bcf store_sample ; update only any CF20 seconds bsf update_divetime ; update divemins every CF20 seconds ifndef __DEBUG btfsc simulatormode_active ; Are we in simulator mode? return ; Yes, discard everything endif btfsc header_stored ; Header already stored? bra store_dive_data2 ; Yes, store only profile data bsf header_stored ; Store header movff eeprom_address+0, eeprom_header_address+0 ; store startposition movff eeprom_address+1, eeprom_header_address+1 ; store startposition ; shift address for header ; the header will be stored after the dive incf_eeprom_address d'57' ; Macro, that adds 8Bit to eeprom_address:2 store_dive_data2: SAFE_2BYTE_COPY rel_pressure, lo movf lo,W ; store depth with every sample call write_external_eeprom movf hi,W call write_external_eeprom ;First, find out how many bytes will append to this sample.... clrf ProfileFlagByte ; clear number of bytes to append ; Check Extented informations decfsz divisor_temperature,W ; Check divisor bra check_extended1 movlw d'2' ; Information length addwf ProfileFlagByte,F ; add to ProfileFlagByte check_extended1: decfsz divisor_deco,W ; Check divisor bra check_extended2 movlw d'2' ; Information length addwf ProfileFlagByte,F ; add to ProfileFlagByte check_extended2: decfsz divisor_gf,W ; Check divisor bra check_extended3 movlw d'1' ; Information length addwf ProfileFlagByte,F ; add to ProfileFlagByte check_extended3: decfsz divisor_ppo2,W ; Check divisor bra check_extended4 movlw d'3' ; Information length addwf ProfileFlagByte,F ; add to ProfileFlagByte check_extended4: decfsz divisor_deco_debug,W; Check divisor bra check_extended5 movlw d'15' ; Information length addwf ProfileFlagByte,F ; add to ProfileFlagByte check_extended5: decfsz divisor_cns,W ; Check divisor bra check_extended6 movlw d'1' ; Information length addwf ProfileFlagByte,F ; add to ProfileFlagByte check_extended6: ; Second, check global event flag btfss event_occured ; Check global event flag bra store_dive_data3 ; No Event movlw d'1' addwf ProfileFlagByte,F ; add one byte (The EventByte) clrf EventByte ; reset EventByte movf AlarmType,W ; Type of alarm Bit 0-3 addwf EventByte,F ; Copy to EventByte Bit 0-3 clrf AlarmType ; Reset AlarmType ; Third, check events and add aditional bytes btfss manual_gas_changed ; Check flag bra check_event1 movlw d'2' ; Information length addwf ProfileFlagByte,F ; add to ProfileFlagByte bsf EventByte,4 ; Also set Flag in EventByte! check_event1: btfss stored_gas_changed ; Check flag bra check_event2 movlw d'1' ; Information length addwf ProfileFlagByte,F ; add to ProfileFlagByte bsf EventByte,5 ; Also set Flag in EventByte! check_event2: btfss setpoint_changed ; Check flag bra check_event3 movlw d'1' ; Information length addwf ProfileFlagByte,F ; add to ProfileFlagByte bsf EventByte,6 ; Also set Flag in EventByte! check_event3: btfss store_bailout_event ; Check flag bra check_event4 movlw d'2' ; Information length addwf ProfileFlagByte,F ; add to ProfileFlagByte bsf EventByte,7 ; Also set Flag in EventByte! check_event4: bsf ProfileFlagByte,7 ; Set EventByte Flag in ProfileFlagByte store_dive_data3: movf ProfileFlagByte,W ; finally, write ProfileFlagByte! call write_external_eeprom btfss event_occured ; Check global event flag (again) bra store_dive_data4 ; No Event ; Store the EventByte + additional bytes now movf EventByte,W call write_external_eeprom btfss manual_gas_changed ; Check flag bra store_dive_data3a read_int_eeprom d'24' ; % O2 Gas6 movf EEDATA,W call write_external_eeprom read_int_eeprom d'25' ; % He Gas6 movf EEDATA,W call write_external_eeprom bcf manual_gas_changed ; Clear this event store_dive_data3a: btfss stored_gas_changed ; Check flag bra store_dive_data3b movf active_gas,W ; Store active gas call write_external_eeprom bcf stored_gas_changed ; Clear this event store_dive_data3b: store_dive_data4: ; Store extended informations decfsz divisor_temperature,F ; Check divisor bra store_extended1 rcall store_dive_temperature store_extended1: decfsz divisor_deco,F ; Check divisor bra store_extended2 rcall store_dive_decodata store_extended2: decfsz divisor_gf,F ; Check divisor bra store_extended3 rcall store_dive_gf store_extended3: decfsz divisor_ppo2,F ; Check divisor bra store_extended4 rcall store_dive_ppo2 store_extended4: decfsz divisor_deco_debug,F; Check divisor bra store_extended5 rcall store_dive_decodebug store_extended5: decfsz divisor_cns,F ; Check divisor bra store_extended6 rcall store_dive_cns store_extended6: ; The next block is required to take care of "store never" btfsc divisor_temperature,7 ; Test highest Bit (Register must have been zero before the "decfsz" command!) clrf divisor_temperature ; And clear register again, so it will never reach zero... btfsc divisor_deco,7 ; Test highest Bit (Register must have been zero before the "decfsz" command!) clrf divisor_deco ; And clear register again, so it will never reach zero... btfsc divisor_gf,7 ; Test highest Bit (Register must have been zero before the "decfsz" command!) clrf divisor_gf ; And clear register again, so it will never reach zero... btfsc divisor_ppo2,7 ; Test highest Bit (Register must have been zero before the "decfsz" command!) clrf divisor_ppo2 ; And clear register again, so it will never reach zero... btfsc divisor_deco_debug,7 ; Test highest Bit (Register must have been zero before the "decfsz" command!) clrf divisor_deco_debug ; And clear register again, so it will never reach zero... btfsc divisor_cns,7 ; Test highest Bit (Register must have been zero before the "decfsz" command!) clrf divisor_cns ; And clear register again, so it will never reach zero... ostc_debug 'D' ; Sends debug-information to screen if debugmode active ; SetPoint change appended to information due to compatibility reasons btfss setpoint_changed ; Check flag bra store_dive_data5 movff ppO2_setpoint_store,WREG ; SetPoint in cbar call write_external_eeprom bcf setpoint_changed ; Clear this event store_dive_data5: btfss store_bailout_event ; Check flag bra store_dive_data6 movff char_I_O2_ratio,WREG call write_external_eeprom movff char_I_He_ratio,WREG call write_external_eeprom bcf store_bailout_event ; Clear this event store_dive_data6: bcf event_occured ; Clear the global event flag return ; Done. (Sample with all informations written to EEPROM) store_dive_cns: movff char_O_CNS_fraction,WREG call write_external_eeprom ; Store in EEPROM GETCUSTOM8 d'26' movwf divisor_cns ; Reload divisor from CF return store_dive_decodebug: movff char_O_deco_time_for_log+.0,WREG ; 3m call write_external_eeprom movff char_O_deco_time_for_log+.1,WREG call write_external_eeprom movff char_O_deco_time_for_log+.2,WREG call write_external_eeprom movff char_O_deco_time_for_log+.3,WREG call write_external_eeprom movff char_O_deco_time_for_log+.4,WREG call write_external_eeprom movff char_O_deco_time_for_log+.5,WREG call write_external_eeprom movff char_O_deco_time_for_log+.6,WREG call write_external_eeprom movff char_O_deco_time_for_log+.7,WREG call write_external_eeprom movff char_O_deco_time_for_log+.8,WREG call write_external_eeprom movff char_O_deco_time_for_log+.9,WREG call write_external_eeprom movff char_O_deco_time_for_log+.10,WREG call write_external_eeprom movff char_O_deco_time_for_log+.11,WREG call write_external_eeprom movff char_O_deco_time_for_log+.12,WREG call write_external_eeprom movff char_O_deco_time_for_log+.13,WREG call write_external_eeprom movff char_O_deco_time_for_log+.14,WREG ; 45m call write_external_eeprom GETCUSTOM8 d'25' movwf divisor_deco_debug ; Reload divisor from CF return store_dive_ppo2: movlw 0x00 ; Dummy call write_external_eeprom movlw 0x00 ; Dummy call write_external_eeprom movlw 0x00 ; Dummy call write_external_eeprom GETCUSTOM8 d'24' movwf divisor_ppo2 ; Reload divisor from CF return store_dive_gf: movff char_O_gradient_factor,WREG ; gradient factor absolute call write_external_eeprom GETCUSTOM8 d'23' movwf divisor_gf ; Reload divisor from CF return store_dive_decodata: movf decodata+0,W ; =0:no stop dive, if in deco mode: ceiling in m call write_external_eeprom movf decodata+1,W ; no stop time of length of first stop call write_external_eeprom GETCUSTOM8 d'22' btfsc FLAG_apnoe_mode ; in Apnoe mode? movlw d'0' ; Yes, set to zero movwf divisor_deco ; Reload divisor from CF return store_dive_temperature: SAFE_2BYTE_COPY temperature,lo movf lo,W ; append temperature to current sample! call write_external_eeprom movf hi,W call write_external_eeprom GETCUSTOM8 d'21' movwf divisor_temperature ; Reload divisor from CF return calc_velocity: ; called every two seconds btfss divemode bra do_not_display_velocity ; display velocity only in divemode calc_velocity2: SAFE_2BYTE_COPY amb_pressure, sub_a movff last_pressure+0,sub_b+0 movff last_pressure+1,sub_b+1 movff sub_a+0,last_pressure+0 ; store old value for velocity movff sub_a+1,last_pressure+1 call sub16 ; sub_c = amb_pressure - last_pressure movff sub_c+0,xA+0 movff sub_c+1,xA+1 movlw d'39' ;77 when called every second.... movwf xB+0 clrf xB+1 call mult16x16 ; differential pressure in mbar*77... movff xC+0,divA+0 movff xC+1,divA+1 movlw d'7' movwf divB call div16 ; devided by 2^7 equals velocity in m/min movlw d'99' cpfsgt divA ; Limit to 99m/min max. bra calc_velocity3 movwf divA ; divA=99 calc_velocity3: GETCUSTOM8 d'5' ; threshold for display vertical velocity subwf divA+0,W ; btfss STATUS,C bra do_not_display_velocity update_velocity: bsf display_velocity GETCUSTOM8 d'60' ; use graphic velocity (=1)? movwf lo movlw d'1' cpfseq lo ; =1? bra update_velocity1 ; No call DISP_display_velocity_graphical return update_velocity1: call DISP_display_velocity return do_not_display_velocity: btfss display_velocity ; Velocity was not displayed, do not delete return bcf display_velocity ; Velocity was displayed, delete velocity now call DISP_display_velocity_clear return check_ppO2: ; check current ppO2 and display warning if required btfsc FLAG_const_ppO2_mode ; ignore in ppO2 mode.... return check_ppO2_bail: ; In CC mode but bailout active! read_int_eeprom d'34' ; Read deco data movlw .6 cpfseq EEDATA bra check_ppO2_non_pscr ; in PSCR mode call compute_pscr_ppo2 ; pSCR ppO2 into sub_c:2 movff sub_c+0,xA+0 movff sub_c+1,xA+1 movlw d'100' movwf xB+0 clrf xB+1 call div16x16 ; /100 tstfsz xC+1 ; Is ppO2 > 2.55bar ? setf xC+0 ; yes: bound to 2.55... better than wrap around. movff xC+0,char_I_actual_ppO2 ; copy last ppO2 to buffer register (for pSCR CNS) clrf xC+2 clrf xC+3 movff sub_c+0,xC+0 movff sub_c+1,xC+1 ; copy for comptibility bra check_ppO2_check check_ppO2_non_pscr: SAFE_2BYTE_COPY amb_pressure, xA movlw d'10' movwf xB+0 clrf xB+1 call div16x16 ; xC=p_amb/10 movff xC+0,xA+0 movff xC+1,xA+1 movff char_I_O2_ratio,xB+0 clrf xB+1 call mult16x16 ; char_I_O2_ratio * p_amb/10 -> xC:4 ; bra check_ppO2_check check_ppO2_check: ; Check very high ppO2 manually tstfsz xC+2 ; char_I_O2_ratio * p_amb/10 > 65536, ppO2>6,55bar? bra check_ppO2_bail2 ; Yes, display Value! ; Check if ppO2 should be displayed movff xC+0,sub_b+0 movff xC+1,sub_b+1 GETCUSTOM8 d'19' ; ppo2_display_high mullw d'100' ; ppo2_display_high*100 movff PRODL,sub_a+0 movff PRODH,sub_a+1 call sub16 bcf ppO2_show_value ; clear flag btfsc neg_flag bsf ppO2_show_value ; set flag if required ;check if we are within our warning thresholds! movff xC+0,sub_b+0 movff xC+1,sub_b+1 GETCUSTOM8 d'18' ; ppo2_warning_high mullw d'100' ; ppo2_warning_high*100 movff PRODL,sub_a+0 movff PRODH,sub_a+1 call sub16 btfss neg_flag bra check_ppO2_0 ; Not too high check_ppO2_bail2: bsf ppO2_show_value ; set flag if required movlw d'5' ; Type of alarm (ppO High Warning) movwf AlarmType ; Copy to alarm Register bsf event_occured ; Set Event Flag check_ppO2_0: movff xC+0,sub_b+0 movff xC+1,sub_b+1 GETCUSTOM8 d'17' ; ppo2_warning_low mullw d'100' ; ppo2_warning_low*100 movff PRODL,sub_a+0 movff PRODH,sub_a+1 call sub16 btfsc neg_flag bra check_ppO2_1 ; Not too low bsf ppO2_show_value ; show ppO2 if below threshold! movlw d'4' ; Type of alarm (ppO Low Warning) movwf AlarmType ; Copy to alarm Register bsf event_occured ; Set Event Flag check_ppO2_1: btfsc ppO2_show_value ; show value? bra check_ppO2_2 ; yes! btfss ppO2_display_active ; is the value displayed? bra check_ppO2_3 ; No, so clear not required call DISP_show_ppO2_clear; Clear ppO2 value bcf ppO2_display_active ; clear flag bra check_ppO2_3 ; done check_ppO2_2: call DISP_show_ppO2 ; Display ppO2 (stored in xC) bsf ppO2_display_active ; Set flag check_ppO2_3: return ; done ;============================================================================= ; Compare all enabled gas in list, to see if a better one is available. ; ; Output: better_gas_available, better_gas_number ; check_gas_change: ; Checks if a better gas should be selected (by user) bcf better_gas_available ;=1: A better gas is available and a gas change is advised in divemode SAFE_2BYTE_COPY rel_pressure,xA movlw d'100' movwf xB+0 clrf xB+1 call div16x16 ; compute depth in full m -> result in xC+0 check_gas_change1: ; check gas1 btfss gaslist_active,0 ; check active flag bra check_gas_change2 ; skip inactive gases! movlw d'1' cpfseq active_gas ; is this gas currently selected? bra check_gas_change1x ; No... bra check_gas_change2 ; Yes, skip depth check check_gas_change1x: read_int_eeprom d'28' ; read gas_change_depth movlw minimum_change_depth cpfsgt EEDATA ; Change depth>minimum_change_depth? bra check_gas_change2 ; No, Change depth not deep enough, skip! movf xC+0,W ; load depth in m into WREG cpfsgt EEDATA ; gas_change_depth < current depth? bra check_gas_change2 ; No, check next gas movlw .1 movwf better_gas_number ; number (1-5) of the "better gas" in divemode, =0: no better gas available movlw better_gas_window subwf EEDATA,W ; Change depth-better_gas_window cpfslt xC+0 ; current depth<Change depth-better_gas_window? bsf better_gas_available ;=1: A better gas is available and a gas change is advised in divemode check_gas_change2: ; check gas2 btfss gaslist_active,1 ; check active flag bra check_gas_change3 ; skip inactive gases! movlw d'2' cpfseq active_gas ; is this gas currently selected? bra check_gas_change2x ; No... bra check_gas_change3 ; Yes, skip depth check check_gas_change2x: read_int_eeprom d'29' ; read gas_change_depth movlw minimum_change_depth cpfsgt EEDATA ; Change depth>minimum_change_depth? bra check_gas_change3 ; No, Change depth not deep enough, skip! movf xC+0,W ; load depth in m into WREG cpfsgt EEDATA ; gas_change_depth < current depth? bra check_gas_change3 ; No, check next gas movlw .2 movwf better_gas_number ; number (1-5) of the "better gas" in divemode, =0: no better gas available movlw better_gas_window subwf EEDATA,W ; Change depth-better_gas_window cpfslt xC+0 ; current depth<Change depth-better_gas_window? bsf better_gas_available ;=1: A better gas is available and a gas change is advised in divemode check_gas_change3: ; check gas3 btfss gaslist_active,2 ; check active flag bra check_gas_change4 ; skip inactive gases! movlw d'3' cpfseq active_gas ; is this gas currently selected? bra check_gas_change3x ; No... bra check_gas_change4 ; Yes, skip depth check check_gas_change3x: read_int_eeprom d'30' ; read gas_change_depth movlw minimum_change_depth cpfsgt EEDATA ; Change depth>minimum_change_depth? bra check_gas_change4 ; No, Change depth not deep enough, skip! movf xC+0,W ; load depth in m into WREG cpfsgt EEDATA ; gas_change_depth < current depth? bra check_gas_change4 ; No, check next gas movlw .3 movwf better_gas_number ; number (1-5) of the "better gas" in divemode, =0: no better gas available movlw better_gas_window subwf EEDATA,W ; Change depth-better_gas_window cpfslt xC+0 ; current depth<Change depth-better_gas_window? bsf better_gas_available ;=1: A better gas is available and a gas change is advised in divemode check_gas_change4: ; check gas4 btfss gaslist_active,3 ; check active flag bra check_gas_change5 ; skip inactive gases! movlw d'4' cpfseq active_gas ; is this gas currently selected? bra check_gas_change4x ; No... bra check_gas_change5 ; Yes, skip depth check check_gas_change4x: read_int_eeprom d'31' ; read gas_change_depth movlw minimum_change_depth cpfsgt EEDATA ; Change depth>minimum_change_depth? bra check_gas_change5 ; No, Change depth not deep enough, skip! movf xC+0,W ; load depth in m into WREG cpfsgt EEDATA ; gas_change_depth < current depth? bra check_gas_change5 ; No, check next gas movlw .4 movwf better_gas_number ; number (1-5) of the "better gas" in divemode, =0: no better gas available movlw better_gas_window subwf EEDATA,W ; Change depth-better_gas_window cpfslt xC+0 ; current depth<Change depth-better_gas_window? bsf better_gas_available ;=1: A better gas is available and a gas change is advised in divemode check_gas_change5: ; check gas5 btfss gaslist_active,4 ; check active flag bra check_gas_change6 ; skip inactive gases! movlw d'5' cpfseq active_gas ; is this gas currently selected? bra check_gas_change5x ; No... bra check_gas_change6 ; Yes, skip depth check check_gas_change5x: read_int_eeprom d'32' ; read gas_change_depth movlw minimum_change_depth cpfsgt EEDATA ; Change depth>minimum_change_depth? bra check_gas_change6 ; No, Change depth not deep enough, skip! movf xC+0,W ; load depth in m into WREG cpfsgt EEDATA ; gas_change_depth < current depth? bra check_gas_change6 ; No, check next gas movlw .5 movwf better_gas_number ; number (1-5) of the "better gas" in divemode, =0: no better gas available movlw better_gas_window subwf EEDATA,W ; Change depth-better_gas_window cpfslt xC+0 ; current depth<Change depth-better_gas_window? bsf better_gas_available ;=1: A better gas is available and a gas change is advised in divemode check_gas_change6: btfss better_gas_available ; Is a better gas available clrf better_gas_number ; No, clear better gas register btfsc is_bailout ;=1: CC mode, but bailout active! bra check_gas_change7 ; In bailout, blink better gas (if required) btfsc FLAG_const_ppO2_mode ; in ppO2 mode? bcf better_gas_available ; Yes, do not blink better gas check_gas_change7: call DISP_active_gas_divemode; Display gas, if required (and with "*" if required...) return ;============================================================================= calculate_noflytime: ; calculate nofly time movff int_O_desaturation_time+0,xA+0 movff int_O_desaturation_time+1,xA+1 btfsc xA+1,7 ; Is desat time negatif ? bra calculate_noflytime_3 ; Then surely not valid ! tstfsz xA+0 ; Desat=0? bra calculate_noflytime2 tstfsz xA+1 ; Desat=0? bra calculate_noflytime2 calculate_noflytime_3: ; Desaturation time = zero clrf nofly_time+0 ; Clear nofly time clrf nofly_time+1 ; Clear nofly time bcf nofly_active ; Clear flag return calculate_noflytime2: movff xA+0,int_I_temp+0 movff xA+1,int_I_temp+1 GETCUSTOM8 .13 ; nofly_time_ratio movff WREG,char_I_temp ostc_debug 'K' ; Sends debug-information to screen if debugmode active call deco_calc_percentage movlb b'00000001' ; select ram bank 1 ostc_debug 'L' ; Sends debug-information to screen if debugmode active movff int_I_temp+0,xA+0 movff int_I_temp+1,xA+1 tstfsz xA+0 ; Desat=0? bra calculate_noflytime_2_final tstfsz xA+1 ; Desat=0? bra calculate_noflytime_2_final bra calculate_noflytime_3 calculate_noflytime_2_final: movff xA+0,nofly_time+0 movff xA+1,nofly_time+1 bsf nofly_active ; Set flag return end_dive: btfss realdive ; dive longer then one minute goto end_dive_common ; No, discard everything ; In DEBUG compile, keep all simulated dives in logbook, Desat time, nofly, etc... ifndef __DEBUG btfsc simulatormode_active ; Are we in simulator mode? goto end_dive_common ; Yes, discard everything endif ; Dive finished (and longer then one minute or Apnoe timeout occured) btfsc FLAG_apnoe_mode ; Calc max. depth (again) for very short apnoe dives call apnoe_calc_maxdepth ; calculate desaturation time movff last_surfpressure_30min+0,int_I_pres_surface+0 ; Pass surface to desat routine ! movff last_surfpressure_30min+1,int_I_pres_surface+1 GETCUSTOM8 d'12' ; Desaturation multiplier % movff WREG,char_I_desaturation_multiplier ostc_debug 'G' ; Sends debug-information to screen if debugmode active call deco_calc_desaturation_time ; calculate desaturation time movlb b'00000001' ; select ram bank 1 call calc_deko_surfmode2 ; work-around for nofly bug rcall calculate_noflytime ; Calc NoFly time movff int_O_desaturation_time+0,desaturation_time_buffer+0 movff int_O_desaturation_time+1,desaturation_time_buffer+1 ostc_debug 'H' ; Sends debug-information to screen if debugmode active ; store header and ... movlw 0xFD ; .... End-of-Profile Bytes call write_external_eeprom movlw 0xFD call write_external_eeprom movlw 0xFE ; This positon will be overwritten for the next profile call write_external_eeprom ; and is required to find the newest dive after a firmware reset movff eeprom_header_address+0, eeprom_address+0 ; set header adress movff eeprom_header_address+1, eeprom_address+1 ; write header movlw 0xFA ; Header start call write_external_eeprom movlw 0xFA call write_external_eeprom movlw logbook_profile_version ; Defined in definitions.asm call write_external_eeprom movf month,W ; Date call write_external_eeprom movf day,W call write_external_eeprom movf year,W call write_external_eeprom movf hours,W ; End of dive time call write_external_eeprom movf mins,W call write_external_eeprom btfss FLAG_apnoe_mode ; Store apnoe max or normal max (Which is only max from the last descent) bra end_dive1 ; Store normal depth movff apnoe_max_pressure+0,lo movff apnoe_max_pressure+1,hi call adjust_depth_with_salinity ; computes salinity setting into lo:hi [mbar] movff lo,apnoe_max_pressure+0 movff hi,apnoe_max_pressure+1 movf apnoe_max_pressure+0,W ; Max. depth call write_external_eeprom movf apnoe_max_pressure+1,W call write_external_eeprom bra end_dive2 ; skip end_dive1: movff max_pressure+0,lo movff max_pressure+1,hi call adjust_depth_with_salinity ; computes salinity setting into lo:hi [mbar] movff lo,max_pressure+0 movff hi,max_pressure+1 movf max_pressure+0,W ; Max. depth call write_external_eeprom movf max_pressure+1,W call write_external_eeprom end_dive2: movf divemins+0,W ; divetime minutes call write_external_eeprom movf divemins+1,W call write_external_eeprom movf divesecs,W ; divetime seconds call write_external_eeprom movf mintemp+0,W ; minimum temperature call write_external_eeprom movf mintemp+1,W call write_external_eeprom movf last_surfpressure_30min+0,W ; airpressure before dive call write_external_eeprom movf last_surfpressure_30min+1,W call write_external_eeprom movff int_O_desaturation_time+0,lo ; movff int_O_desaturation_time+1,hi movf lo,W ; desaturation time in minutes call write_external_eeprom movf hi,W ; call write_external_eeprom ; Gases.... btfsc FLAG_const_ppO2_mode bra end_dive3 ; Store diluents instead of gases read_int_eeprom d'6' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'7' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'10' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'11' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'14' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'15' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'18' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'19' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'22' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'23' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom bra end_dive4 end_dive3: ; New in 2.52 Diluents stored seperately in EEPROM Bank0 ;Byte96-97: ;Diluent 1 Default (%O2,%He) ;Byte98-99: ;Diluent 1 Current (%O2,%He) ;Byte100-101: ;Diluent 2 Default (%O2,%He) ;Byte102-103: ;Diluent 2 Current (%O2,%He) ;Byte104-105: ;Diluent 3 Default (%O2,%He) ;Byte106-107: ;Diluent 3 Current (%O2,%He) ;Byte108-109: ;Diluent 4 Default (%O2,%He) ;Byte110-111: ;Diluent 4 Current (%O2,%He) ;Byte112-113: ;Diluent 5 Default (%O2,%He) ;Byte114-115: ;Diluent 5 Current (%O2,%He) ;Byte116: ;First Diluent (1-5) read_int_eeprom d'97' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'98' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'101' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'102' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'105' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'106' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'109' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'110' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'113' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom read_int_eeprom d'114' ; Read byte (stored in EEDATA) movf EEDATA,W call write_external_eeprom end_dive4: read_int_eeprom d'24' ; % O2 Gas6 movf EEDATA,W call write_external_eeprom read_int_eeprom d'25' ; % He Gas6 movf EEDATA,W call write_external_eeprom movlw .33 ; Start gas btfsc FLAG_const_ppO2_mode ; In CCR mode? movlw .116 ; Yes, use start Diluent instead movwf EEADR call read_eeprom movf EEDATA,W call write_external_eeprom movlw softwareversion_x ; Firmware version call write_external_eeprom movlw softwareversion_y call write_external_eeprom movf batt_voltage+0,W ; Battery voltage call write_external_eeprom movf batt_voltage+1,W call write_external_eeprom GETCUSTOM8 d'20' ; sampling rate in WREG btfsc FLAG_apnoe_mode ; Apnoe mode? movlw d'1' ; Apnoe sampling rate call write_external_eeprom movlw d'2' ; information size temperature movwf temp1 ; copy to bits 0-3 swapf temp1,F ; swap nibbels 0-3 with 4-7 GETCUSTOM8 d'21' ; Divisor temperature addwf temp1,W ; copy to bits 0-3, result in WREG call write_external_eeprom movlw d'2' ; information size deco movwf temp1 ; copy to bits 0-3 swapf temp1,F ; swap nibbels 0-3 with 4-7 GETCUSTOM8 d'22' ; Divisor deco btfsc FLAG_apnoe_mode ; in Apnoe mode? movlw d'0' ; Yes, set to zero addwf temp1,W ; copy to bits 0-3, result in WREG call write_external_eeprom movlw d'1' ; information size GF movwf temp1 ; copy to bits 0-3 swapf temp1,F ; swap nibbels 0-3 with 4-7 GETCUSTOM8 d'23' ; Divisor GF addwf temp1,W ; copy to bits 0-3, result in WREG call write_external_eeprom movlw d'3' ; information size pp02 movwf temp1 ; copy to bits 0-3 swapf temp1,F ; swap nibbels 0-3 with 4-7 GETCUSTOM8 d'24' ; Divisor pp02 addwf temp1,W ; copy to bits 0-3, result in WREG call write_external_eeprom movlw d'15' ; information size Decodebug movwf temp1 ; copy to bits 0-3 swapf temp1,F ; swap nibbels 0-3 with 4-7 GETCUSTOM8 d'25' ; Divisor Decodebug addwf temp1,W ; copy to bits 0-3, result in WREG call write_external_eeprom movlw d'1' ; information size cns movwf temp1 ; copy to bits 0-3 swapf temp1,F ; swap nibbels 0-3 with 4-7 GETCUSTOM8 d'26' ; Divisor cns addwf temp1,W ; copy to bits 0-3, result in WREG call write_external_eeprom read_int_eeprom d'26' ; Read Salinity from EEPROM movf EEDATA,W call write_external_eeprom ; Store Salinity to Dive movff char_O_CNS_fraction,WREG ; copy into bank1 call write_external_eeprom ; Stores CNS% movff avr_rel_pressure_total+0,WREG ; Average Depth call write_external_eeprom movff avr_rel_pressure_total+1,WREG ; Average Depth call write_external_eeprom movff total_divetime_seconds+0,WREG ; Total dive time (Regardless of CF01) call write_external_eeprom movff total_divetime_seconds+1,WREG ; Total dive time (Regardless of CF01) call write_external_eeprom movlw d'32' ; GF_lo movff char_I_deco_model,lo decfsz lo,F ; jump over next line if char_I_deco_model == 1 movlw d'11' ; Saturation Multiplier call getcustom8_1 ; Get Custom function #WREG call write_external_eeprom ; write WREG into external memory movlw d'33' ; GF_hi movff char_I_deco_model,lo decfsz lo,F ; jump over next line if char_I_deco_model == 1 movlw d'12' ; Desaturation Multiplier call getcustom8_1 ; Get Custom function #WREG call write_external_eeprom ; write WREG into external memory read_int_eeprom d'34' ; Read deco modell movf EEDATA,W call write_external_eeprom ; write WREG into external memory GETCUSTOM8 d'29' ; Last decostop [m] call write_external_eeprom ; write WREG into external memory movff gaslist_active,WREG ; "Gas active" flag register call write_external_eeprom ; write WREG into external memory clrf WREG call write_external_eeprom ; Spare1 movlw 0xFB ; Header stop call write_external_eeprom movlw 0xFB call write_external_eeprom ; Increase total dive counter read_int_eeprom d'2' ; Read byte (stored in EEDATA) movff EEDATA,temp1 ; Low byte read_int_eeprom d'3' ; Read byte (stored in EEDATA) movff EEDATA,temp2 ; high byte bcf STATUS,C movlw d'1' addwf temp1 movlw d'0' addwfc temp2 movff temp1,EEDATA write_int_eeprom d'2' ; write byte stored in EEDATA movff temp2,EEDATA write_int_eeprom d'3' ; write byte stored in EEDATA ; Save dive mode custom view movff menupos3,EEDATA ; Copy to EEDATA write_int_eeprom d'94' ; Write last selected customview dive mode into EEPROM GETCUSTOM15 .28 ; Logbook Offset -> lo, hi tstfsz lo ; lo=0? bra change_logbook_offset1 ; No, adjust offset tstfsz hi ; hi=0? bra change_logbook_offset1 ; No, adjust offset bra change_logbook_offset2 ; lo=0 and hi=0 -> skip Offset routine change_logbook_offset1: movlw d'1' addwf lo movlw d'0' addwfc hi movlw d'112' ; CF28 *4 Bytes... addlw 0x82 movwf EEADR movff lo,EEDATA call write_eeprom ; Lowbyte movlw d'112' ; CF28 *4 Bytes... addlw 0x83 movwf EEADR movff hi,EEDATA call write_eeprom ; Highbyte change_logbook_offset2: bcf LED_blue clrf surface_interval+0 clrf surface_interval+1 ; Clear surface interval timer end_dive_common: bcf simulatormode_active ; if we were in simulator mode ; In DEBUG compile, keep all simulated dives in logbook, Desat time, nofly, etc... ifndef __DEBUG btfsc restore_deco_data ; Restore decodata? call simulator_restore_tissue_data ; Yes! endif goto surfloop_no_display_init ; and return to surfaceloop timeout_divemode: btfss realdive ; Dive longer then one minute return btfsc FLAG_apnoe_mode ; In Apnoe mode? bra timeout_divemode2 ; Yes, use CF30 [min] for timeout ifndef __DEBUG btfsc simulatormode_active ; In Simulator mode? bra timeout_divemode3 ; Yes, use fixed 5 seconds timeout endif bcf divemode incf timeout_counter,F movlw d'0' addwfc timeout_counter2,F ; timeout is 15bits GETCUSTOM15 d'2' ; diveloop_timeout -> lo:hi btfss dekostop_active ; Is a deco stop displayed? bra timeout_divemode1 ; No, use normal CF02 timeout ; Yes, use 10minutes counter movlw LOW .600 movwf lo movlw HIGH .600 movwf hi timeout_divemode1: movff lo,sub_a+0 movff hi,sub_a+1 movff timeout_counter, sub_b+0 movff timeout_counter2, sub_b+1 call sub16 ; sub_c = sub_a - sub_b btfss neg_flag ; Result negative? bsf divemode ; No, set flag return timeout_divemode2: incf timeout_counter,F ; seconds... movlw d'60' cpfseq timeout_counter ; timeout_counter=60? return ; No. clrf timeout_counter bcf divemode incf apnoe_timeout_counter,F GETCUSTOM8 d'30' ; apnoe timeout [min] cpfseq apnoe_timeout_counter bsf divemode return timeout_divemode3: bcf divemode incf timeout_counter,F movlw d'5' ; Fixed timeout of 5 seconds cpfsgt timeout_counter bsf divemode return update_divemode1: ; update any second call set_dive_modes ; tests if depth>threshold btfsc divemode call set_max_depth ; update max. depth if required btfsc divemode call set_min_temp ; store min. temp if required bcf temp_changed ; Display temperature? SAFE_2BYTE_COPY temperature,lo movf lo,W cpfseq last_temperature+0 bsf temp_changed ; Yes movf hi,W cpfseq last_temperature+1 bsf temp_changed ; Yes btfsc temp_changed call DISP_temp_divemode ; Displays temperature bcf pres_changed ; Display new depth? SAFE_2BYTE_COPY amb_pressure, lo movf lo,W cpfseq last_pressure+0 bsf pres_changed ; Yes movf hi,W cpfseq last_pressure+1 bsf pres_changed ; Yes btfsc simulatormode_active ; always update depth when in simulator mode bsf pres_changed btfsc pres_changed call DISP_depth ; Displays new depth return update_divemode60: ; update any minute call get_battery_voltage ; gets battery voltage call set_powersafe ; red LED blinking if battery is low call DISP_max_pressure ; No, use normal max. depth call check_temp_extrema ; check for new temperature extremas call customview_minute ; Do every-minute tasks for the custom view area bcf oneminupdate return set_max_depth: movff max_pressure+0,sub_a+0 movff max_pressure+1,sub_a+1 SAFE_2BYTE_COPY rel_pressure, sub_b call sub16 ; sub_c = sub_a - sub_b ; max_pressure<rel_pressure -> neg_flag=1 ; rel_pressure<=max_pressure -> neg_flag=0 btfss neg_flag return ;max_pressure<rel_pressure movff sub_b+0,max_pressure+0 movff sub_b+1,max_pressure+1 call DISP_max_pressure ; No, use normal max. depth return set_min_temp: movff mintemp+0,sub_a+0 movff mintemp+1,sub_a+1 SAFE_2BYTE_COPY temperature,sub_b call sub16 ; sub_c = sub_a - sub_b ; mintemp<T -> neg_flag=1 ; T<=mintemp -> neg_flag=0 btfsc neg_flag return ;mintemp>=T movff sub_b+0,mintemp+0 movff sub_b+1,mintemp+1 return set_dive_modes: btfsc high_altitude_mode ; In high altitude (Fly) mode? bra set_dive_modes3 ; Yes! btfss divemode ; In divemode? bra set_dive_modes0 ; No. ; in Divemode, check threshold from CF01 GETCUSTOM8 .1 ; loads dive_threshold in WREG movwf sub_a+0 ; dive_treshold is in cm movlw .20 cpfsgt sub_a+0 movwf sub_a+0 ; Make sure to have at least 20cm threshold clrf sub_a+1 bra set_dive_modes1 ; Done. set_dive_modes0: GETCUSTOM8 .0 ; loads dive_threshold in WREG movwf sub_a+0 ; dive_treshold is in cm movlw .20 cpfsgt sub_a+0 movwf sub_a+0 ; Make sure to have at least 20cm threshold clrf sub_a+1 bra set_dive_modes1 ; Done. set_dive_modes1: SAFE_2BYTE_COPY rel_pressure, sub_b call sub16 ; sub_c = sub_a - sub_b btfss neg_flag bra set_dive_modes2 ; too shallow (rel_pressure<dive_threshold) btfsc realdive ; Dive longer than one minute? clrf timeout_counter ; Yes, reset timout counter (Low Byte) btfsc realdive ; Dive longer than one minute? clrf timeout_counter2 ; Yes, reset timout counter (High Byte) set_dive_modes_common: bsf divemode ; (Re-)Set divemode flag bsf divemode2 ; displayed divetime is running btfsc timeout_display ; Was the timeout displayed? call DISP_divemode_timeout_clear ; Yes, Clear (once) return set_dive_modes2: bcf divemode2 ; Stop time btfss realdive ; dive longer then one minute? bcf divemode ; no -> this was no real dive btfss divemode ; Are we still diving? return ; No, return ; Yes, show divemode timeout btfsc menubit ; Divemode menu active? return ; Yes, return btfsc FLAG_apnoe_mode ; In Apnoe mode? return ; Yes, return btfsc gauge_mode ; In Gauge mode? return ; Yes, return btfss dekostop_active ; Is a deco stop displayed? call DISP_divemode_timeout ; No, show the divemode timeout here... btfsc dekostop_active ; Is a deco stop displayed? call DISP_divemode_timeout2 ; Yes, show red warning divemode counter return set_dive_modes3: ; High-altitude mode btfsc realdive ; dive longer then one minute? bra set_dive_modes0 ; Yes -> this is a real dive -> Use CF00 threshold for ascend movlw HIGH d'300' ; hard-wired 300cm threshold movwf sub_a+1 movlw LOW d'300' ; hard-wired 300cm threshold movwf sub_a+0 bra set_dive_modes1 set_powersafe: btfsc low_battery_state ; battery warning alread active? bra set_powersafe2 ; Yes, but is it still required? ; battery voltage in mV (value*256+Lowbyte=actual treshold) movlw d'12' ; 3,328V cpfsgt batt_voltage+1 bra set_powersafe1 return set_powersafe1: movlw d'7' ; Type of alarm (Battery Low) movwf AlarmType ; Copy to alarm Register bsf event_occured ; Set Event Flag bsf low_battery_state ; set flag for battery warning return ; return set_powersafe2: movlw d'13' ; 3,584V cpfsgt batt_voltage+1 bra set_powersafe1 ; Still to low bcf low_battery_state ; clear flag for battery warning mode return calc_average_depth: btfsc reset_average_depth ; Reset the Avewrage depth? rcall reset_average1 ; Reset the resettable average depth ; 1. Add new 2xdepth to the Sum of depths registers SAFE_2BYTE_COPY rel_pressure, b0_lo ; Buffer... movf b0_lo,w addwf average_depth_hold+0,F movf b0_hi,w addwfc average_depth_hold+1,F movlw d'0' addwfc average_depth_hold+2,F addwfc average_depth_hold+3,F ; Will work up to 9999mbar*60*60*24=863913600mbar movf b0_lo,w addwf average_depth_hold+0,F movf b0_hi,w addwfc average_depth_hold+1,F movlw d'0' addwfc average_depth_hold+2,F addwfc average_depth_hold+3,F ; Will work up to 9999mbar*60*60*24=863913600mbar ; Do the same for the _total registers (Non-Resettable) movf b0_lo,w addwf average_depth_hold_total+0,F movf b0_hi,w addwfc average_depth_hold_total+1,F movlw d'0' addwfc average_depth_hold_total+2,F addwfc average_depth_hold_total+3,F ; Will work up to 9999mbar*60*60*24=863913600mbar movf b0_lo,w addwf average_depth_hold_total+0,F movf b0_hi,w addwfc average_depth_hold_total+1,F movlw d'0' addwfc average_depth_hold_total+2,F addwfc average_depth_hold_total+3,F ; Will work up to 9999mbar*60*60*24=863913600mbar ; 2. Compute Average Depth on base of average_divesecs:2 movff average_divesecs+0,xB+0 movff average_divesecs+1,xB+1 ; Copy movff average_depth_hold+0,xC+0 movff average_depth_hold+1,xC+1 movff average_depth_hold+2,xC+2 movff average_depth_hold+3,xC+3 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder movff xC+0,avr_rel_pressure+0 movff xC+1,avr_rel_pressure+1 ; Compute Total Average Depth on base of divemins:2 and divesecs movff divemins+0,xA+0 movff divemins+1,xA+1 movlw d'60' movwf xB+0 clrf xB+1 call mult16x16 ; xC:4=xA:2*xB:2 movf divesecs,W addwf xC+0,F movlw d'0' addwfc xC+1,F ; xC:2 holds total dive seconds movlw d'3' ; 2+1 btfss divesecs,0 ; divesecs even? movlw d'2' ; Yes, do not add +1 addwf xC+0,F movlw d'0' addwfc xC+1,F ; Ignore xC+2 and xC+3. Total Average will only work up to divetime=1092:16 movff xC+0,xB+0 movff xC+1,xB+1 ; Copy movff average_depth_hold_total+0,xC+0 movff average_depth_hold_total+1,xC+1 movff average_depth_hold_total+2,xC+2 movff average_depth_hold_total+3,xC+3 call div32x16 ; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder movff xC+0,avr_rel_pressure_total+0 movff xC+1,avr_rel_pressure_total+1 return reset_average1: clrf average_depth_hold+0 clrf average_depth_hold+1 clrf average_depth_hold+2 clrf average_depth_hold+3 ; Clear average depth register movlw d'2' movwf average_divesecs+0 clrf average_divesecs+1 bcf reset_average_depth ; Clear flag return ;============================================================================= ; Setup everything to enter divemode. ; diveloop_boot: ostc_debug 'Q' ; Sends debug-information to screen if debugmode active clrf max_pressure+0 ; clear some variables clrf max_pressure+1 clrf avr_rel_pressure+0 clrf avr_rel_pressure+1 movlw d'1' movwf apnoe_max_pressure+0 clrf apnoe_max_pressure+1 clrf apnoe_surface_mins clrf apnoe_surface_secs clrf apnoe_mins clrf apnoe_secs clrf divemins+0 clrf divemins+1 clrf total_divetime_seconds+0 clrf total_divetime_seconds+1 bsf divemode2 ; displayed divetime is running (Divetime starts HERE) clrf EEADRH ; Make sure to select eeprom bank 0 call DISP_brightness_low read_int_eeprom d'90' ; Brightness offset? (Dim>0, Normal = 0) movlw d'0' cpfsgt EEDATA call DISP_brightness_full bcf use_aGF bcf timeout_display bcf menu3_active clrf divesecs clrf samplesecs clrf better_gas_number ; number (1-5) of the "better gas" in divemode, =0: no better gas available clrf apnoe_timeout_counter ; timeout in minutes clrf timeout_counter ; takes care of the timeout (Low byte) clrf timeout_counter2 ; takes care of the timeout (High byte) clrf AlarmType ; Clear all alarms bcf event_occured ; clear flag bcf setpoint_changed ; clear flag bcf store_bailout_event ; clear flag rcall reset_average1 ; Reset the resettable average depth clrf average_depth_hold_total+0 clrf average_depth_hold_total+1 clrf average_depth_hold_total+2 clrf average_depth_hold_total+3 ; Clear Non-Resettable Average bcf depth_greater_100m ; clear flag ; setf last_diluent ; to be displayed after first calculation (range: 0 to 100 [%]) bcf dekostop_active bcf decoplan_invalid bcf is_bailout ;=1: CC mode, but bailout active! bcf better_gas_available ;=1: A better gas is available and a gas change is advised in divemode bcf tts_extra_time ;=1: Compute TTS if extra time spent at current depth bcf show_safety_stop ;=1: Show the safety stop clrf safety_stop_countdown ; Clear count-down call get_free_EEPROM_location ; get last position in external EEPROM, may be up to 2 secs! btfsc simulatormode_active bra diveloop_boot_1 ; Normal mode = Surface pressure is the pressure 30mn before dive. movff last_surfpressure_30min+0,int_I_pres_surface+0 ; LOW copy surfacepressure to deco routine movff last_surfpressure_30min+1,int_I_pres_surface+1 ; HIGH copy surfacepressure to deco routine bra diveloop_boot_2 diveloop_boot_1: ; Simulator mode: Surface pressure is 1bar. movlw LOW .1000 movff WREG,int_I_pres_surface+0 ; LOW copy surfacepressure to deco routine movlw HIGH .1000 movff WREG,int_I_pres_surface+1 ; HIGH copy surfacepressure to deco routine diveloop_boot_2: SAFE_2BYTE_COPY temperature,mintemp ; Reset Min-Temp registers ; Init profile recording parameters GETCUSTOM8 d'20' ; sample rate movwf samplesecs_value ; to avoid EEPROM access in the ISR GETCUSTOM8 d'21' movwf divisor_temperature ; load divisors for profile storage GETCUSTOM8 d'22' btfsc FLAG_apnoe_mode ; in Apnoe mode? movlw d'0' ; Yes, set to zero movwf divisor_deco GETCUSTOM8 d'23' movwf divisor_gf GETCUSTOM8 d'24' movwf divisor_ppo2 GETCUSTOM8 d'25' movwf divisor_deco_debug GETCUSTOM8 d'26' movwf divisor_cns btfss FLAG_apnoe_mode ; In Apnoe mode? bra divemode1 ; Overwrite some parameters in Apnoe mode.... movlw d'1' movwf samplesecs_value ; to avoid EEPROM access in the ISR divemode1: read_int_eeprom d'36' ; Read mix 1 ppO2 btfsc FLAG_const_ppO2_mode movff EEDATA,char_I_const_ppO2 ; Set ppO2 setpoint if in ppO2 mode movff EEDATA,ppO2_setpoint_store ; Store also in this byte... bcf LED_blue bcf low_battery_state ; clear flag for battery warning mode bcf header_stored bcf premenu bcf realdive bsf update_divetime ; set flag btfss simulatormode_active ; do not disable in simulator mode! call disable_rs232 ; Disable RS232 ; Read Start Gas and configure char_I_He_ratio, char_I_O2_ratio and char_I_N2_ratio set_first_gas: btfsc FLAG_const_ppO2_mode bra set_first_gas_ccr ; In CCR mode read_int_eeprom d'33' ; Read byte (stored in EEDATA) movff EEDATA,active_gas ; Read start gas (1-5) movff EEDATA,char_I_current_gas decf active_gas,W ; Gas 0-4 mullw d'4' movf PRODL,W addlw d'7' ; = address for He ratio movwf EEADR call read_eeprom ; Read He ratio movff EEDATA,char_I_He_ratio ; And copy into hold register decf EEADR,F call read_eeprom ; Read O2 ratio movff EEDATA, char_I_O2_ratio ; O2 ratio movff char_I_He_ratio, wait_temp ; copy into bank1 register bsf STATUS,C ; Borrow bit movlw d'100' ; 100% subfwb wait_temp,W ; minus He bsf STATUS,C ; Borrow bit subfwb EEDATA,W ; minus O2 movff WREG, char_I_N2_ratio ; = N2! ; Configure gaslist_active flag register read_int_eeprom d'27' movff EEDATA, gaslist_active return set_first_gas_ccr: ; Set Diluent call get_first_diluent ; Read first diluent into lo(O2) and hi(He) movff hi,char_I_He_ratio ; And copy into hold register movff lo, char_I_O2_ratio ; O2 ratio movff char_I_He_ratio, wait_temp ; copy into bank1 register bsf STATUS,C ; Borrow bit movlw d'100' ; 100% subfwb wait_temp,W ; minus He bsf STATUS,C ; Borrow bit subfwb lo,W ; minus O2 movff WREG, char_I_N2_ratio ; = N2! read_int_eeprom d'116' ; Read First Diluent (1-5) movff EEDATA,active_diluent return