; 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/>.


; Menu "Logbook"
; written by: Matthias Heinrichs, info@heinrichsweikamp.com
; written: 060107
; last updated: 081026
; known bugs: 
; ToDo: 

; searches external EEPROM for dive headers and displays them in a list
; a detailed view with all informations and profile can be selected
; does not require a FAT, will work with other profile intervals as ten seconds, too

menu_logbook:
	bcf			return_from_profileview				; clear some flags
;call	enable_rs232
menu_logbook1:
	bcf			logbook_header_drawn
	call		PLED_ClearScreen				; Clear screen
	bcf			all_dives_shown					; clear some flags
	bcf			logbook_profile_view
	bcf			logbook_page_not_empty
	clrf		menupos3						; Here: used rows on current logbook-page	
	clrf		menupos2						; Here: # of current displayed page
	clrf		divenumber						; # of dive in list during search


menu_logbook1a:
	WIN_INVERT	.1
	DISPLAYTEXT	.12							;" Wait.."
	WIN_INVERT	.0
	call 		I2CReset					; Reset I2C Bus
	call		get_free_EEPROM_location	; search from "here" backwards through the external memory

	movff		eeprom_address+0,logbook_temp5
	movff		eeprom_address+1,logbook_temp6	; Store Pointer to 0xFE (From 0xFD, 0xFD, 0xFE sequence) for faster display

menu_logbook1a_no_get_free:				; Without repeated search for dive
	clrf		divemins+0					; Here: used as temp variables
	clrf		divemins+1
	movlw		d'5'
	movwf		menupos					; Here: stores current position on display (5-x)

;-----------------------------------------------------------------------------	
; search external EEPROM backwards from eeprom_address
; for 0xFA, 0xFA (store 1st. 0xFA position for next search)
; read header data and display it
; wait for user to confirm/exit
; recopy data to search from here

menu_logbook1b:
	WIN_INVERT	.1
	DISPLAYTEXT	.12						;" Wait.."
	WIN_INVERT	.0

    ;---- fast loop: check every other byte ----------------------------------
menu_logbook2:
    infsnz      divemins+0,F            ; increase 16Bit value
	incf        divemins+1,F
    infsnz      divemins+0,F            ; increase 16Bit value, twice
	incf        divemins+1,F

	btfsc		divemins+1,7            ; At 0x8000?
	bra			menu_logbook_reset      ; yes, restart (if not empty)

	decf_eeprom_address	d'2'			; -2 to eeprom address.

	call		I2CREAD					; reads one byte (Slow! Better use Blockread!)

	movlw		0xFA                    ; That was a FA ?
	cpfseq		SSPBUF
    bra         menu_logbook2           ; No: continue the fast loop...
    
    ;---- Slow check : was it before or after that one ? ---------------------

 	incf_eeprom_address	d'1'			; Been one step too far ?
	call		I2CREAD					; reads one byte (Slow! Better use Blockread!)
	movlw		0xFA                    ; That was a FA ?
	xorwf		SSPBUF,W
	bz          menu_loop_tooFar        ; Got both of them...
	
    infsnz      divemins+0,F            ; Advance to the next byte.
	incf        divemins+1,F
	decf_eeprom_address	d'2'			; One step back, two steps forward.
	call		I2CREAD					; reads one byte (Slow! Better use Blockread!)
	movlw		0xFA                    ; It was the second FA ?
	xorwf		SSPBUF,W
	bz          test_FA_DONE
    bra         menu_logbook2           ; No: continue the fast loop...
   
menu_loop_tooFar;
 	decf_eeprom_address	d'1'			; So stays pointing at the second one.

test_FA_DONE:							; Found 0xFA 0xFA!
	movff		eeprom_address+0,eeprom_header_address+0	; store current address into temp register
	movff		eeprom_address+1,eeprom_header_address+1	; we must continue search here later
	incf		divenumber,F            ; new header found, increase divenumber
	bra			menu_logbook4           ; Done with searching, display the header!

menu_logbook3b:
	btfss		logbook_page_not_empty		; Was there at least one dive?
	goto		menu						; Not a single header was found, leave logbook.
	bra			menu_logbook_display_loop2	; rcall of get_free_eeprom_location not required here (faster)

menu_logbook_reset:	
	movf		divenumber,W
	btfsc		STATUS,Z					; Was there at least one dive?
	bra			menu_logbook3b				; No, Nothing to do

	bsf			all_dives_shown				; Yes
	bra			menu_logbook_display_loop2	; rcall of get_free_eeprom_location not required here (faster)


menu_logbook4:
	; Adjust eeprom_address to set pointer on first headerbyte
	incf_eeprom_address	d'2'            ; Macro, that adds 8Bit to eeprom_address:2 with banking at 0x8000

	btfss		logbook_profile_view			; Display profile (search routine is used in profileview, too)
	bra			menu_logbook_display_loop		; No, display overwiev list

	movf		divesecs,W					; divenumber that is searched
	cpfseq		divenumber					; current divenumber
	goto		next_logbook				; No match, continue search
	bra			display_profile2			; Match: Show header and profile
	

menu_logbook_display_loop:
	btfsc		all_dives_shown				; All dives displayed?
	bra			menu_logbook_display_loop2		; Yes, but display first page again.

	call 		display_listdive			; display short header for list on current list position

	movlw		d'5'
	cpfseq		menupos					; first dive on list (top place)?
	bra			menu_logbook_display_loop1		; no, so skip saving of address


	movff		divenumber,mintemp+0			; store all registered required to rebuilt the current logbookpage after the detail/profile view
	movff		eeprom_header_address+0,decodata+0	; several registers are used as temp registers here
	movff		eeprom_header_address+1,decodata+1		
	movff		divemins+0,max_pressure+0			
	movff		divemins+1,max_pressure+1			

	movlw		d'3'
	addwf		decodata+0,F
	movlw 		d'0'
	addwfc		decodata+1,F				; Re-Adjust pointer again
	movlw		d'3'						; So first row will be the same again after detail/profile view
	subwf		max_pressure+0,F
	movlw		d'0'
	subwfb		max_pressure+1,F

menu_logbook_display_loop1:
	decfsz		menupos,F					; List full?
	goto		next_logbook				; no, search another dive for our current logbook page

menu_logbook_display_loop2:
	btfss		logbook_page_not_empty		; Was there one dive at all?
	bra			menu_logbook				; Yes, so reload the first page

	call		PLED_topline_box			; Draw box
	WIN_INVERT	.1	
	DISPLAYTEXT	.26							; "Logbook"
	WIN_INVERT	.0
	
	DISPLAYTEXT .11							; Displays "Exit" in the last row on the current page

	bcf			sleepmode					; clear some flags for user input
	bcf			menubit2
	bcf			menubit3
	bcf			cursor
	bcf			switch_right
	bcf			switch_left
	clrf		timeout_counter2

	movlw		d'1'						; Set cursor to position 1...
	btfsc		return_from_profileview		; .. unless we are returning from a detail/profile view
	movf		mintemp+1,W					; load last cursor position again
	movwf		menupos						; and set menupos byte
	bcf			return_from_profileview		; Do this only once while the page is loaded again!

	bcf			logbook_page_not_empty			; Obviously the current page is NOT empty
	call		PLED_logbook_cursor

menu_logbook_loop:
	call		check_switches_logbook
	
	btfsc		menubit3					; SET/MENU?
	goto		next_logbook3				; adjust cursor or create new page

	btfsc		menubit2					; ENTER?
	bra			display_profile_or_exit		; view details/profile or exit logbook

	btfsc		onesecupdate
	call		timeout_surfmode			; Timeout

	btfsc		onesecupdate
	call		set_dive_modes				; Check, if divemode must be entered

	bcf			onesecupdate				; one second update 

	btfsc		sleepmode					; Timeout?
	goto		menu						; Yes

	btfsc		divemode
	goto		restart						; Enter Divemode if required

	goto		menu_logbook_loop			; Wait for something to do

display_profile_or_exit:
	bcf			menubit2					; debounce
	movlw		d'6'						; exit?
	cpfseq		menupos
	bra			display_profile				; No, show details/profile
	goto		menu

display_profile:	
	movff		menupos,mintemp+1				; store current cursor position
	bsf			return_from_profileview			; tweak search routine to exit after found

	movf		menupos2,W						; Number of page
	mullw		d'5'				
	movf		PRODL,W						
	addwf		menupos,W						; page*5+menupos=
	movwf		divesecs						; # of dive to search

	call		PLED_ClearScreen				; search for dive
	bsf			logbook_profile_view			; set flag for search routine

	clrf		divenumber						; search from scratch

	movff		logbook_temp5,eeprom_address+0
	movff		logbook_temp6,eeprom_address+1	; Restore Pointer to 0xFE (From 0xFD, 0xFD, 0xFE sequence) for faster display

	bra			menu_logbook1a_no_get_free		; Start Search for Dive (Without get_free_EEPROM_location)

display_profile2:
	bcf			logbook_profile_view			; clear flag for search routine

	call		PLED_display_wait_clear
	call		PLED_standard_color
	WIN_TOP		.0
	WIN_LEFT	.0
	STRCPY      "#"

	GETCUSTOM15	.28							; Logbook Offset -> lo, hi
	tstfsz		lo							; lo=0?
	bra			display_profile_offset1		; No, adjust offset	
	tstfsz		hi							; hi=0?
	bra			display_profile_offset1		; No, adjust offset
	bra			display_profile_offset2		; lo=0 and hi=0 -> skip Offset routine

display_profile_offset1:
	movlw		d'1'
	addwf		lo,F
	movlw		d'0'
	addwfc		hi,F						; hi:lo = hi:lo + 1
	movff		lo,sub_a+0
	movff		hi,sub_a+1
	movff		divesecs,sub_b+0
	clrf		sub_b+1
	call		sub16						;  sub_c = sub_a - sub_b
	movff		sub_c+0,lo
	movff		sub_c+1,hi
	bsf			leftbind
	output_16dp	d'10'						; # of dive with offset
	bra			display_profile_offset3		; Skip normal routine
	
display_profile_offset2:
	movff		divesecs,lo				; 
	output_99x							; # of dive

display_profile_offset3:
	PUTC		' '
	call		I2CREAD2				; Skip Profile version
	call		I2CREAD2				; read month
	movff		SSPBUF,lo				; store in lo

; Offset to SamplingRate
	incf_eeprom_address	d'32'				; Macro, that adds 8Bit to eeprom_address:2 with banking at 0x8000
	call		I2CREAD						; Read Sampling rate
	movff		SSPBUF,samplesecs_value		; Copy sampling rate
	decf_eeprom_address	d'32'				; Macro, that subtracts 8Bit from eeprom_address:2 with banking at 0x8000

	movff		lo,convert_value_temp+0		; Month (in lo, see above)
	call		I2CREAD2					; Day
	movff		SSPBUF,convert_value_temp+1
	call		I2CREAD2					; Year
	movff		SSPBUF,convert_value_temp+2
	call		PLED_convert_date			; converts into "DD/MM/YY" or "MM/DD/YY" or "YY/MM/DD" in postinc2

	PUTC		' '
	call		I2CREAD2					; hour
	movff		SSPBUF,lo
	output_99x			
	PUTC		':'
	call		I2CREAD2					; Minute
	movff		SSPBUF,lo
	output_99x			
	call		word_processor				; Display 1st row of details

	WIN_TOP		.25
	WIN_LEFT	.05
	lfsr		FSR2,letter
	call		I2CREAD2				; read max depth
	movff		SSPBUF,lo				
	call		I2CREAD2				; read max depth
	movff		SSPBUF,hi
	movff		lo,xA+0					; calculate y-scale for profile display
	movff		hi,xA+1
	movlw		d'164'					; 164pixel height available
	movwf		xB+0
	clrf		xB+1
	call		div16x16				; does xA/xB=xC
	movff		xC+0,sim_pressure+0		; holds LOW byte of y-scale   (mbar/pixel!)
	movff		xC+1,sim_pressure+1		; holds HIGH byte of y-scale  (mbar/pixel!)
	incf		sim_pressure+0,F		; increase one, because there may be a remainder
	movlw		d'0'
	addwfc		sim_pressure+1,F
	movlw		LOW		d'164000'		; 164pixel*1000 height
	movwf		xC+0
	movlw		HIGH	d'164000'		; 164pixel*1000 height
	movwf		xC+1
	movlw		UPPER	d'164000'		; 164pixel*1000 height
	movwf		xC+2
	clrf		xC+3

	movff		lo,xB+0					; Max. Depth in mBar
	movff		hi,xB+1					; Max. Depth in mBar
	call		div32x16				; xC:4 / xB:2 = xC+3:xC+2 with xC+1:xC+0 as remainder

	movff		xC+0,last_temperature+0	; 
	movff		xC+1,last_temperature+1	; = Pixels/10m (For scale, draw any xx rows a scale-line)

	bsf			leftbind
	output_16dp	d'3'					; max. depth
	STRCAT      "m "
	call		I2CREAD2				; divetime in minutes	
	movff		SSPBUF,lo
	call		I2CREAD2	
	movff		SSPBUF,hi				; divetime in minutes

	movff		lo,xA+0					; calculate x-scale for profile display
	movff		hi,xA+1					; calculate total diveseconds first
	movlw		d'60'					; 60seconds are one minute...
	movwf		xB+0
	clrf		xB+1
	call		mult16x16				; result is in xC:2 !

	bsf			leftbind
	output_16							; divetime minutes

; Compute spacing between 10min lines
	movff		lo,xA+0
	movff		hi,xA+1					; divetime in minutes
	movlw		d'10'
	movwf		xB+0
	clrf		xB+1					; A vertical line every 10 minutes
	call		div16x16				;xA/xB=xC with xA as remainder
	; xC now holds number of lines
	movlw		d'1'
	addwf		xC+0					; Add one line...
	movff		xC+0,xB+0
	clrf		xB+1					; No more then 255 lines...
	movlw		d'159'					; Available width
	movwf		xA+0
	clrf		xA+1
	call		div16x16				;xA/xB=xC with xA as remainder
	; xC now holds spacing between vertical 10min lines
	movff		xC+0,avr_rel_pressure+0
	movff		xC+1,avr_rel_pressure+1					; spacing between 10min lines (1-159)

; Restore divetime in minutes:
	movff		lo,xA+0					; calculate x-scale for profile display
	movff		hi,xA+1					; calculate total diveseconds first
	movlw		d'60'					; 60seconds are one minute...
	movwf		xB+0
	clrf		xB+1
	call		mult16x16				; result is in xC:2 !

	PUTC		d'39'					;"'"
	call		I2CREAD2				; read divetime seconds
	movff		SSPBUF,lo
	movf		lo,W					; add seconds to total seconds
	addwf		xC+0
	movlw		d'0'
	addwfc		xC+1					; xC:2 now holds total dive seconds!
	movff		xC+0,xA+0				; now calculate x-scale value
	movff		xC+1,xA+1
	movlw		d'159'					; 159pix width available
	movwf		xB+0
	clrf		xB+1
	call		div16x16				; xA/xB=xC
	movff		xC+0,xA+0	
	movff		xC+1,xA+1
	movf		samplesecs_value,W		; devide through sample interval!
	movwf		xB+0
	clrf		xB+1
	call		div16x16				; xA/xB=xC
	movff		xC+0,profile_temp+0		; store value (use any #xC sample, skip xC-1) into temp registers
	movff		xC+1,profile_temp+1		; store value (use any #xC sample, skip xC-1) into temp registers
	incf		profile_temp+0,F		; increase one, because there may be a remainder
	movlw		d'0'
	addwfc		profile_temp+1,F


	bsf			leftbind
	output_99x							; divetime seconds
	STRCAT      "\" "
	call		I2CREAD2	
	movff		SSPBUF,lo
	call		I2CREAD2	
	movff		SSPBUF,hi
	movlw		d'3'
	movwf		ignore_digits
	bsf			leftbind
	output_16dp	d'2'						; temperature
	STRCAT_PRINT "°C"                   ; Display 2nd row of details

	WIN_TOP		.50
	WIN_LEFT	.05
	lfsr		FSR2,letter

	call		I2CREAD2				; read Air pressure
	movff		SSPBUF,lo
	call		I2CREAD2				; read Air pressure
	movff		SSPBUF,hi

	movff		lo,average_depth_hold+2
	movff		hi,average_depth_hold+3		; Store here for correct average

	bsf			leftbind
	output_16							; Air pressure before dive
	STRCAT      "mbar "
	OUTPUTTEXT  .014                    ; Desat
	PUTC        ' '

	call		I2CREAD2				; read Desaturation time
	movff		SSPBUF,lo				
	call		I2CREAD2				; read Desaturation time
	movff		SSPBUF,hi		
	call		convert_time				; converts hi:lo in minutes to hours (hi) and minutes (lo)
	bsf			leftbind
	movf		lo,W
	movff		hi,lo
	movwf		hi							; exchange lo and hi...
	output_8								; Hours
	PUTC		':'
	movff		hi,lo						; Minutes
	output_99x
	bcf			leftbind
	call		word_processor				; display 3rd page of details

	movff		eeprom_address+0,average_depth_hold+0
	movff		eeprom_address+1,average_depth_hold+1			; Pointer to Gaslist (For Page 2)

	incf_eeprom_address	d'12'				; Skip 12 Bytes in EEPROM (faster) (Gaslist)
	call		I2CREAD2					; Read start gas (1-5)
	movff		SSPBUF,active_gas			; Store
	incf_eeprom_address	d'5'				; Skip 5 Bytes in EEPROM (faster) (Battery, firmware)

	call		I2CREAD2					; Read divisor
	movff		SSPBUF,divisor_temperature	; Store divisor
	bcf			divisor_temperature,4		; Clear information length
	bcf			divisor_temperature,5
	bcf			divisor_temperature,6
	bcf			divisor_temperature,7
	incf		divisor_temperature,F		; increase divisor 
	movff		divisor_temperature,logbook_temp1		; Store as temp, too
	call		I2CREAD2					; Read divisor
	movff		SSPBUF,divisor_deco			; Store divisor
	bcf			divisor_deco,4				; Clear information length
	bcf			divisor_deco,5
	bcf			divisor_deco,6
	bcf			divisor_deco,7
	movff		divisor_deco,logbook_temp2	; Store as temp, too
	call		I2CREAD2					; Read divisor
	movff		SSPBUF,divisor_tank			; Store divisor
	call		I2CREAD2					; Read divisor
	movff		SSPBUF,divisor_ppo2			; Store divisor
	call		I2CREAD2					; Read divisor
	movff		SSPBUF,divisor_deco_debug	; Store divisor
	call		I2CREAD2					; Read divisor
	movff		SSPBUF,divisor_nuy2			; Store divisor
	incf_eeprom_address	d'2'				; Skip 2Bytes in EEPROM (faster)
	; 2 bytes salinity, GF

display_profile2d:
	; Start Profile display

	clrf		average_divesecs+0
	clrf		average_divesecs+1			; Counts x-pixels for average
	clrf		average_depth_hold_total+0
	clrf		average_depth_hold_total+1
	clrf		average_depth_hold_total+2
	clrf		average_depth_hold_total+3	; Track average depth here...

; Write 0m X-Line..
	movlw		color_grey	
	call		PLED_set_color				; Make this configurable?

	movlw		d'75'
	movff		WREG,win_top
	movlw		d'5'
	movff		WREG,win_leftx2				; Left border (0-159)
	movlw		d'1'
	movff		WREG,win_height				
	movlw		d'155'
	movff		WREG,win_width				; Right border (0-159)
display_profile2e:
	call		PLED_box					; Inputs:  win_top, win_leftx2, win_height, win_width, win_color1, win_color2
	movff		win_top,WREG				; Get row
	addwf		last_temperature+0,W		; Add line interval distance to win_top
	tstfsz		last_temperature+1			; >255?
	movlw		d'255'						; Yes, make win_top>239 -> Abort here
	btfsc		STATUS,C					; A Cary from the addwf above?
	movlw		d'255'						; Yes, make win_top>239 -> Abort here
	movff		WREG,win_top				; Result in win_top again
	movff		win_top,lo					; Get win_top in Bank1...
	movlw		d'239'						; Limit
	cpfsgt		lo							; >239?
	bra			display_profile2e			; No, draw another line

; Write 0min Y-Line..
	movlw		color_grey	
	call		PLED_set_color				; Make this configurable?

	movlw		d'75'
	movff		WREG,win_top
	movlw		d'4'
	movff		WREG,win_leftx2				; Left border (0-159)
	movlw		d'164'
	movff		WREG,win_height				
	movlw		d'1'
	movff		WREG,win_width				; "Window" Width
display_profile2f:
	call		PLED_box					; Inputs:  win_top, win_leftx2, win_height, win_width, win_color1, win_color2
	movff		win_leftx2,WREG				; Get column
	addwf		avr_rel_pressure+0,W		; Add column interval distance to win_leftx2
	tstfsz		avr_rel_pressure+1			; >255?
	movlw		d'255'						; Yes, make win_leftx2>159 -> Abort here
	btfsc		STATUS,C					; A Cary from the addwf above?
	movlw		d'255'						; Yes, make win_leftx2>159 -> Abort here
	movff		WREG,win_leftx2				; Result in win_leftx2 again
	movff		win_leftx2,lo				; Get win_leftx2 in Bank1...
	movlw		d'159'						; Limit
	cpfsgt		lo							; >159?
	bra			display_profile2f			; No, draw another line

	movlw		color_blue	
	WIN_FRAME_COLOR	.75, .239, .4, .159	;top, bottom, left, right with color in WREG

	call		I2CREAD2					; skip 0xFB		(Header-end)
	clrf		timeout_counter2			; here: used as counter for depth readings
	call		I2CREAD2					; skip 0xFB		(Header-end)
	movlw		d'158'
	movwf		ignore_digits				; here: used as counter for x-pixels
	bcf			second_FD					; clear flag
	movlw		d'5'
	movwf		timeout_counter3			; here: used as colum x2 (Start at Colum 5)
	movlw		d'75'						; Zero-m row
	movwf		apnoe_mins					; here: used for fill between rows
	incf		timeout_counter3,W			; Init Column

    INIT_PIXEL_WROTE timeout_counter3       ; pixel x2			(Also sets standard Color!)

	dcfsnz		active_gas,F
	movlw		color_white					; Color for Gas 1
	dcfsnz		active_gas,F
	movlw		color_green					; Color for Gas 2
	dcfsnz		active_gas,F
	movlw		color_red					; Color for Gas 3
	dcfsnz		active_gas,F
	movlw		color_yellow				; Color for Gas 4
	dcfsnz		active_gas,F
	movlw		color_violet				; Color for Gas 5
	call		PLED_set_color				; Set Color...


profile_display_loop:
	movff		profile_temp+0,profile_temp2+0
	movff		profile_temp+1,profile_temp2+1		; 16Bit x-scaler
	incf		profile_temp2+1,F					
	tstfsz		profile_temp2+0						; Must not be Zero
	bra			profile_display_loop2				; Not Zero!
	incf		profile_temp2+0,F					; Zero, Increase!

profile_display_loop2:
	rcall		profile_view_get_depth		; reads depth, ignores temp and profile data	-> hi, lo

	btfsc		second_FD					; end-of profile reached?
	bra			profile_display_loop_done	; Yes, skip all remaining pixels

	movff		sim_pressure+0,xB+0			; devide pressure in mbar/quant for row offsett
	movff		sim_pressure+1,xB+1
	movff		lo,xA+0
	movff		hi,xA+1
	call		div16x16					; xA/xB=xC
	movlw		d'75'
	addwf		xC+0,F						; add 75 pixel offset to result
	
	btfsc		STATUS,C						; Ignore potential profile errors
	movff		apnoe_mins,xC+0

	call		profile_display_fill		; In this column between this row (xC+0) and the last row (apnoe_mins)
	movff		xC+0,apnoe_mins				; Store last row for fill routine
	incf		timeout_counter3,F

    PIXEL_WRITE timeout_counter3,xC+0       ; Set col(0..159) x row (0..239), put a std color pixel.

profile_display_skip_loop1:					; skips readings!
	dcfsnz		profile_temp2+0,F
	bra			profile_display_loop3		; check 16bit....

	rcall		profile_view_get_depth		; reads depth, ignores temp and profile data
	bra			profile_display_skip_loop1

profile_display_loop3:
	decfsz		profile_temp2+1,F			; 16 bit x-scaler test
	bra			profile_display_skip_loop1	; skips readings!

	decfsz		ignore_digits,F				; counts drawn x-pixels to zero
	bra			profile_display_loop		; Not ready yet
; Done.
profile_display_loop_done:
	call		PLED_standard_color			; Restore color

	bcf			sleepmode					; clear some flags
	bcf			menubit2
	bcf			menubit3
	bcf			switch_right
	bcf			switch_left
	clrf		timeout_counter2

display_profile_loop:
	call		check_switches_logbook
	btfsc		menubit2					; SET/MENU?
	bra			exit_profileview			; back to list
	btfsc		menubit3					; ENTER?
	bra			profileview_page2			; Switch to Page2 of profile view
	btfsc		onesecupdate
	call		timeout_surfmode			; timeout
	btfsc		onesecupdate
	call		set_dive_modes				; check, if divemode must be entered
	bcf			onesecupdate				; one second update
	btfsc		sleepmode					; Timeout?
	bra			exit_profileview			; back to list
	btfsc		divemode
	goto		restart						; Enter Divemode if required
	bra			display_profile_loop		; wait for something to do


profileview_page2:
    WIN_BOX_BLACK   .0, .74, .0, .159		;top, bottom, left, right

	movff		average_depth_hold+0,eeprom_address+0
	movff		average_depth_hold+1,eeprom_address+1			; Pointer to Gaslist

	movlw		color_white					; Color for Gas 1
	call		PLED_set_color				; Set Color...
	bsf			leftbind
	WIN_TOP		.0
	WIN_LEFT	.0
	STRCPY      "G1:"
	call		I2CREAD2					; Gas1 current O2
	movff		SSPBUF,lo
	output_99x
	PUTC		'/'
	call		I2CREAD2					; Gas1 current HE
	movff		SSPBUF,lo
	output_8
	call		word_processor				; Display Gas information

	movlw		color_green					; Color for Gas 2
	call		PLED_set_color				; Set Color...
	WIN_TOP		.25
	STRCPY      "G2:"
	call		I2CREAD2					; Gas2 current O2
	movff		SSPBUF,lo
	output_8
	PUTC		'/'
	call		I2CREAD2					; Gas2 current HE
	movff		SSPBUF,lo
	output_8
	call		word_processor				; Display Gas information

	movlw		color_red					; Color for Gas 3
	call		PLED_set_color				; Set Color...
	WIN_TOP		.50
	STRCPY      "G3:"
	call		I2CREAD2					; Gas3 current O2
	movff		SSPBUF,lo
	output_8
	PUTC		'/'
	call		I2CREAD2					; Gas3 current HE
	movff		SSPBUF,lo
	output_8
	call		word_processor				; Display Gas information

	movlw		color_yellow				; Color for Gas 4
	call		PLED_set_color				; Set Color...
	WIN_TOP		.0
	WIN_LEFT	.60
	STRCPY      "G4:"
	call		I2CREAD2					; Gas4 current O2
	movff		SSPBUF,lo
	output_8
	PUTC		'/'
	call		I2CREAD2					; Gas4 current HE
	movff		SSPBUF,lo
	output_8
	call		word_processor				; Display Gas information

	movlw		color_violet				; Color for Gas 5
	call		PLED_set_color				; Set Color...
	WIN_TOP		.25
	STRCPY      "G5:"
	call		I2CREAD2					; Gas5 current O2
	movff		SSPBUF,lo
	output_8
	PUTC		'/'
	call		I2CREAD2					; Gas5 current HE
	movff		SSPBUF,lo
	output_8
	call		word_processor				; Display Gas information

	movlw		color_cyan					; Color for Gas 6
	call		PLED_set_color				; Set Color...
	WIN_TOP		.50
	STRCPY      "G6:"
	call		I2CREAD2					; Gas6 current O2
	movff		SSPBUF,lo
	output_8
	PUTC		'/'
	call		I2CREAD2					; Gas6 current HE
	movff		SSPBUF,lo
	output_8
	call		word_processor				; Display Gas information

	call		PLED_standard_color
	WIN_TOP		.0
	WIN_LEFT	.120
	STRCPY      "1st:"
	call		I2CREAD2					; Start Gas
	movff		SSPBUF,lo
	output_8
	call		word_processor				; Display Gas information


	bcf			show_cns_in_logbook			; clear flag
	WIN_TOP		.25
	STRCPY      "V"
	call		I2CREAD2					; Firmware x
	movff		SSPBUF,lo
	movff		SSPBUF,hi
	output_8
	PUTC		'.'
	call		I2CREAD2					; Firmware y
	movff		SSPBUF,lo
	movlw		.83							; Check firmware y > 83
	cpfslt		lo							; <83?
	bsf			show_cns_in_logbook			; No, set flag
	movlw		.2							; Check firmware x > 1
	cpfslt		hi							; <2?
	bsf			show_cns_in_logbook			; No, set flag
	output_8
	call		word_processor				; Display Gas information
	bcf			leftbind					; Clear flag



	WIN_TOP		.50
	lfsr		FSR2,letter	
	call		I2CREAD2					; Battery lo
	movff		SSPBUF,lo
	call		I2CREAD2					; Battery hi
	movff		SSPBUF,hi
	movlw	d'1'
	movwf	ignore_digits
	bsf		ignore_digit5		; do not display mV
	bsf		leftbind
	output_16dp	d'2'			; e.g. 3.45V
	bcf		leftbind
	STRCAT_PRINT  "V"

	bcf			leftbind					; Clear flag

;	call		I2CREAD2					; Skip Sampling rate

	bcf			menubit2
	bcf			menubit3
	bcf			switch_right
	bcf			switch_left
	clrf		timeout_counter2
display_profile2_loop:
	call		check_switches_logbook
	btfsc		menubit2					; SET/MENU?
	bra			exit_profileview			; back to list
	btfsc		menubit3					; ENTER?
	bra			profileview_page3			; Switch to Page3 of profile view
	btfsc		onesecupdate
	call		timeout_surfmode			; timeout
	btfsc		onesecupdate
	call		set_dive_modes				; check, if divemode must be entered
	bcf			onesecupdate				; one second update
	btfsc		sleepmode					; Timeout?
	bra			exit_profileview			; back to list
	btfsc		divemode
	goto		restart						; Enter Divemode if required
	bra			display_profile2_loop		; wait for something to do

profileview_page3:
    WIN_BOX_BLACK   .0, .74, .0, .159		;top, bottom, left, right

	call		PLED_standard_color

	movff		average_depth_hold+0,eeprom_address+0
	movff		average_depth_hold+1,eeprom_address+1			; Pointer to Gaslist

	incf_eeprom_address	d'24'				; Point to "Salinity"
	bsf			leftbind
	WIN_TOP		.0
	WIN_LEFT	.0
	call		I2CREAD2					; read Salinity
	lfsr	FSR2,letter
	movff	SSPBUF,lo
	clrf	hi
	output_16dp	d'3'
	STRCAT_PRINT "kg/l"

	call		I2CREAD2					; Read CNS%

	btfss	show_cns_in_logbook				; Show CNS?
	bra		logbook_skip_cns				; No

	movff		SSPBUF,lo
	WIN_TOP		.25
	STRCPY      "CNS:"
	output_8
	STRCAT_PRINT "%"						; Display CNS %

logbook_skip_cns:
	WIN_TOP		.50

	movff	average_divesecs+0,xB+0				; Number of samples in dive
	movff	average_divesecs+1,xB+1				; Copy to xB:2

	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
	STRCPY      "Avr:"
	movff	xC+0,lo
	movff	xC+1,hi
	output_16dp	d'3'			; Average depth (Re-calculated from the drawn profile - not 100% exact!)
	STRCAT_PRINT "m"

;	WIN_TOP		.0
;	WIN_LEFT	.75
;	lfsr	FSR2,letter
;	movff	average_divesecs+0,lo
;	output_8
;	call		word_processor


	bcf			menubit2
	bcf			menubit3
	bcf			switch_right
	bcf			switch_left
	clrf		timeout_counter2
display_profile3_loop:
	call		check_switches_logbook
	btfsc		menubit2					; SET/MENU?
	bra			exit_profileview			; back to list
	btfsc		menubit3					; ENTER?
	bra			exit_profileview			; back to list
	btfsc		onesecupdate
	call		timeout_surfmode			; timeout
	btfsc		onesecupdate
	call		set_dive_modes				; check, if divemode must be entered
	bcf			onesecupdate				; one second update
	btfsc		sleepmode					; Timeout?
	bra			exit_profileview			; back to list
	btfsc		divemode
	goto		restart						; Enter Divemode if required
	bra			display_profile3_loop		; wait for something to do
	


profile_display_fill:		; In this column between this row (xC+0) and the last row (apnoe_mins), keep xC+0!!
; First, check if xC+0>apnoe_mins or xC+0<aponoe_mins
	movf	xC+0,W
	cpfseq	apnoe_mins				; xC+0 = apone_mins?
	bra		profile_display_fill2	; No!
	return

profile_display_fill2:	
	movf	xC+0,W
	cpfsgt	apnoe_mins				; apnoe_mins>xC+0?
	bra		profile_display_fill_up	; Yes!

profile_display_fill_down:			; Fill downwards from apone_mins to xC+0!
	movff		apnoe_mins,xC+1		; Copy
profile_display_fill_down2:			; Loop	
	decf		xC+1,F

    HALF_PIXEL_WRITE    xC+1        ; Updates just row (0..239)

	movf		xC+0,W
	cpfseq		xC+1				; Loop until xC+1=xC+0
	bra			profile_display_fill_down2
	return							; apnoe_mins and xC+0 are untouched

profile_display_fill_up:			; Fill upwards from xC+0 to apone_mins!
	movff		xC+0,xC+1			; Copy
profile_display_fill_up2:			; Loop	
	decf		xC+1,F

    HALF_PIXEL_WRITE    xC+1        ; Updates just row (0..239)

	movf		apnoe_mins,W
	cpfseq		xC+1				; Loop until xC+1=apnoe_mins
	bra			profile_display_fill_up2
	return							; apnoe_mins and xC+0 are untouched

profile_view_get_depth:						
	call		I2CREAD2					; read first depth
	movff		SSPBUF,lo					; low value
	call		I2CREAD2					; read first depth
	movff		SSPBUF,hi					; high value
	call		I2CREAD2					; read Profile Flag Byte
	movff		SSPBUF,timeout_counter2		; Read Profile Flag Byte

	bcf			event_occured				; clear flag
	btfsc		timeout_counter2,7
	bsf			event_occured				; We also have an Event byte!
	bcf			timeout_counter2,7			; Clear Event Byte Flag (If any)
	; timeout_counter2 now holds the number of additional bytes to ignore (0-127)
	movlw		0xFD						; end of profile bytes?
	cpfseq		lo
	bra			profile_view_get_depth_new1	; no 0xFD
	movlw		0xFD						; end of profile bytes?
	cpfseq		hi
	bra			profile_view_get_depth_new1	; no 0xFD
	bsf			second_FD					; End found! Set Flag! Skip remaining pixels!
	return

profile_view_get_depth_new1:
	incf		average_divesecs+0,F			
	movlw		d'0'
	addwfc		average_divesecs+1,F			; counter for average depth
	; add depth to average registers
	movf		lo,W
	addwf		average_depth_hold_total+0,F
	movf		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

	btfsc		event_occured				; Was there an event attached to this sample?
	rcall		profile_view_get_depth_new2	; Yes, get information about this event

	tstfsz		timeout_counter2			; Any bytes to ignore
	bra			profile_view_get_depth_new3	; Yes (1-127)
	return									; No (0)

profile_view_get_depth_new3:
	movf		timeout_counter2,W			; number of additional bytes to ignore (0-127)
	call		incf_eeprom_address0		; increases bytes in eeprom_address:2 with 0x8000 bank switching
	return

profile_view_get_depth_new2:
	call		I2CREAD2					; Read Event byte
	movff		SSPBUF,EventByte			; store EventByte
	decf		timeout_counter2,F			; reduce counter
; Check Event flags in the EventByte
	btfsc		EventByte,4					; Manual Gas Changed?
	bra			logbook_event1				; Yes!
	btfss		EventByte,5					; Stored Gas Changed?
	return									; No, return
; Stored Gas changed!
	call		I2CREAD2					; Read Gas#
	movff		SSPBUF,active_gas			; store gas#
	decf		timeout_counter2,F			; reduce counter
	dcfsnz		active_gas,F
	movlw		color_white					; Color for Gas 1
	dcfsnz		active_gas,F
	movlw		color_green					; Color for Gas 2
	dcfsnz		active_gas,F
	movlw		color_red					; Color for Gas 3
	dcfsnz		active_gas,F
	movlw		color_yellow				; Color for Gas 4
	dcfsnz		active_gas,F
	movlw		color_violet				; Color for Gas 5
	call		PLED_set_color				; Set Color...
	return

logbook_event1:
	movlw		color_cyan					; Color for Gas 6
	call		PLED_set_color				; Set Color...
	return		;(The two bytes indicating the manual gas change will be ignored in the standard "ignore loop" above...)


;Keep comments for future temperature graph
;	call		I2CREAD2					; ignore byte
;	decfsz		timeout_counter2,F			; reduce counter
;	bra			profile_view_get_depth_new3	; Loop
;	return

exit_profileview:
	bcf			sleepmode
	clrf		timeout_counter2				; restore all registers to build same page again
	movff		decodata+0,eeprom_address+0
	movff		decodata+1,eeprom_address+1		
	movff		max_pressure+0,divemins+0
	movff		max_pressure+1,divemins+1
	movff		mintemp+0, divenumber
	decf		divenumber,F
	bcf			all_dives_shown

	decf		menupos2,F	

	clrf		menupos3					; here: used row on current page
	movlw		d'5'
	movwf		menupos						; here: active row on current page
	incf		menupos2,F					; start new page
	call		PLED_ClearScreen			; clear details/profile
	goto		menu_logbook1b					; start search

next_logbook2:
	btfsc		all_dives_shown				; all shown
	goto		menu_logbook1				; all reset

	clrf		menupos3	
	movlw		d'5'
	movwf		menupos					; 
	incf		menupos2,F					; start new screen
	call		PLED_ClearScreen
	
next_logbook:
	movff		eeprom_header_address+0,eeprom_address+0
	movff		eeprom_header_address+1,eeprom_address+1	; continue search here
	goto		menu_logbook1b

check_switches_logbook:
	btfsc		switch_right			
	bsf			menubit3
	btfsc		switch_left
	bsf			menubit2					; Enter
	return

next_logbook3:
	incf		menupos,F
	movlw		d'7'
	cpfseq		menupos					; =7?
	bra			next_logbook3a				; No
	bra			next_logbook2				; yes, new page please

next_logbook3a:
	incf		menupos3,W					; 
	cpfseq		menupos
	bra			next_logbook3b
	movlw		d'6'
	movwf		menupos					; Jump directly to exit if page is not full

next_logbook3b:
	clrf		timeout_counter2
	call		PLED_logbook_cursor

	bcf			switch_right
	bcf			menubit3					; clear flag
	goto		menu_logbook_loop

display_listdive:
	bsf			logbook_page_not_empty		; Page not empty
	incf		menupos3,F					

	btfsc		logbook_header_drawn		; "Logbook already displayed?
	bra			display_listdive1a
	call		PLED_topline_box			; Draw box
	WIN_INVERT	.1
	DISPLAYTEXT	.26							; "Logbook"
	WIN_INVERT	.0
	bsf			logbook_header_drawn
	
display_listdive1a:	
	WIN_LEFT	.20
	
	movf		menupos2,W
	mullw		d'5'
	movf		PRODL,W
	subwf		divenumber,W				; current row on page

	mullw		d'30'						; x30
	movf		PRODL,W						; is pixel-row for entry
	addlw		d'5'						; +5 Pixel, so list entries are at rows 35,65,95,125,155,185
	movff		WREG,win_top

	lfsr		FSR2,letter
	movff		divenumber,lo
	output_99x								; # of dive
	PUTC		' '
	call		I2CREAD3					; logbook_profile_version (1st. byte of Header after the 0xFA, 0xFA)  (Block read start)
	movff		SSPBUF,lo
	movlw		d'13'
	cpfsgt		lo							; Skip if lo>13
	bra			display_listdive2			; use old format

	call		I2CREAD4					; Skip Profile version (Block read)
	movff		SSPBUF,lo					; in new format, read month

display_listdive2:
	movff		lo,convert_value_temp+0		; Month (in lo, see above)
	call		I2CREAD4					; Day (Block read)
	movff		SSPBUF,convert_value_temp+1
	call		I2CREAD4					; Year (Block read)
	movff		SSPBUF,convert_value_temp+2
	call		PLED_convert_date_short		; converts into "DD/MM" or "MM/DD" or "MM/DD" in s


	incf_eeprom_address	d'2'				; Skip Bytes in EEPROM (faster)
;	call		I2CREAD2					; hours (Skip)
;	call		I2CREAD2					; minutes (skip)

	PUTC		' '
	call		I2CREAD3					; Depth (Block read start)
	movff		SSPBUF,lo
	call		I2CREAD4					; Block read
	movff		SSPBUF,hi
	bsf			leftbind
	bsf			ignore_digit5				; Do not display 1cm figure
	output_16dp	d'3'						; max. depth
	STRCAT      "m "
	call		I2CREAD4					; Block read
	movff		SSPBUF,lo					; read divetime in minutes
	call		I2CREAD4					; Block read
	movff		SSPBUF,hi					; read divetime in minutes
	bsf			leftbind
	output_16								; Divetime minutes
	STRCAT_PRINT "'"                    	; Display header-row in list
	incf_eeprom_address	d'37'				; 12 Bytes read from header, skip 37 Bytes in EEPROM (Remaining Header)
	return