XDEF	Menu
	XREF	__SEG_END_SSTACK,pw_set,disp,display_string,menu_option_num,menu_active,menu_selection
	
Variables:	    	Section

Constants:	      Section

Code:		  	Section

Menu:      ;push register and accumulator values for retention                   
            PSHA
            PSHB
            PSHD
            PSHX
            PSHY
            
            LDAA  menu_active ;do nothing if the menu is not active
            CMPA  #$00
            LBEQ  Return
            
PrintTopLine:
           ;all menu items print this line
           movb #'S',disp
           movb #'e',disp+1
           movb #'l',disp+2
           movb #'e',disp+3
           movb #'c',disp+4
           movb #'t',disp+5
           movb #' ',disp+6
           movb #'o',disp+7
           movb #'p',disp+8
           movb #'t',disp+9
           movb #'i',disp+10
           movb #'o',disp+11
           movb #'n',disp+12
           movb #':',disp+13
           movb #' ',disp+14
           movb #' ',disp+15
           ;next line
           
            ;load the menu option and output the correct lower string           
            LDAA  menu_option_num
            CMPA  #$01
            LBEQ  PrintOption1
                 
            CMPA  #$02
            LBEQ   PrintOption2
            
            CMPA  #$03
            LBEQ  PrintOption3
            
            CMPA  #$04
            LBEQ  PrintOption4
            
            CMPA  #$05
            LBEQ  PrintOption5
            
            CMPA  #$06
            LBEQ  PrintOption6

            CMPA  #$07
            LBEQ  PrintOption7
            
Reset:
            MOVB  #$01,menu_option_num
            LBRA  PrintTopLine
              
           
;==================== main menu =======================
; 1. water the plants
; 2. show temperature (adjusts when the pot is turned)
; 3. show time
; 4. set time (passord protected)
; 5. change password (password protected)
;======================================================

PrintOption1:
           movb #'1',disp+16
           movb #'.',disp+17
           movb #' ',disp+18
           movb #'W',disp+19
           movb #'a',disp+20
           movb #'t',disp+21
           movb #'e',disp+22
           movb #'r',disp+23
           movb #' ',disp+24
           movb #'p',disp+25
           movb #'l',disp+26
           movb #'a',disp+27
           movb #'n',disp+28
           movb #'t',disp+29
           movb #'s',disp+30
           movb #' ',disp+31
           movb #0,disp+32    ;string terminator, acts like '\0'
		       
		       ;print the prompt string
		       LDD   #disp         ;both of these steps are necessary to
           jsr  display_string ;print to the LCD screen
           
           ;get out of the menu, do not go to PrintOption2
           LBRA  Return

PrintOption2:
           movb #'2',disp+16
           movb #'.',disp+17
           movb #' ',disp+18
           movb #'S',disp+19
           movb #'h',disp+20
           movb #'o',disp+21
           movb #'w',disp+22
           movb #' ',disp+23
           movb #'t',disp+24
           movb #'e',disp+25
           movb #'m',disp+26
           movb #'p',disp+27
           movb #'.',disp+28
           movb #' ',disp+29
           movb #' ',disp+30
           movb #' ',disp+31
           movb #0,disp+32    ;string terminator, acts like '\0'
           
           ;print the prompt string
		       LDD   #disp         ;both of these steps are necessary to
           jsr  display_string ;print to the LCD screen
           
           ;get out of the menu, do not go to PrintOption23
           LBRA  Return

PrintOption3:
           movb #'3',disp+16
           movb #'.',disp+17
           movb #' ',disp+18
           movb #'S',disp+19
           movb #'h',disp+20
           movb #'o',disp+21
           movb #'w',disp+22
           movb #' ',disp+23
           movb #'t',disp+24
           movb #'i',disp+25
           movb #'m',disp+26
           movb #'e',disp+27
           movb #' ',disp+28
           movb #' ',disp+29
           movb #' ',disp+30
           movb #' ',disp+31
           movb #0,disp+32    ;string terminator, acts like '\0'
           
           ;print the prompt string
		       LDD   #disp         ;both of these steps are necessary to
           jsr  display_string ;print to the LCD screen
           
           ;get out of the menu, do not go to PrintOption23
           LBRA  Return
PrintOption4:
           movb #'4',disp+16
           movb #'.',disp+17
           movb #' ',disp+18
           movb #'S',disp+19
           movb #'e',disp+20
           movb #'t',disp+21
           movb #' ',disp+22
           movb #'t',disp+23
           movb #'i',disp+24
           movb #'m',disp+25
           movb #'e',disp+26
           movb #' ',disp+27
           movb #' ',disp+28
           movb #' ',disp+29
           movb #' ',disp+30
           movb #' ',disp+31
           movb #0,disp+32    ;string terminator, acts like '\0'
           
           ;print the prompt string
		       LDD   #disp         ;both of these steps are necessary to
           jsr  display_string ;print to the LCD screen
           
           ;get out of the menu, do not go to PrintOption23
           LBRA Return
PrintOption5:
           movb #'5',disp+16
           movb #'.',disp+17
           movb #' ',disp+18
           movb #'R',disp+19
           movb #'e',disp+20
           movb #'s',disp+21
           movb #'e',disp+22
           movb #'t',disp+23
           movb #' ',disp+24
           movb #'p',disp+25
           movb #'a',disp+26
           movb #'s',disp+27
           movb #'s',disp+28
           movb #'w',disp+29
           movb #'d',disp+30
           movb #'.',disp+31
           movb #0,disp+32    ;string terminator, acts like '\0'
           
           ;print the prompt string
		       LDD   #disp         ;both of these steps are necessary to
           jsr  display_string ;print to the LCD screen
           
           ;get out of the menu, do not go to PrintOption23
           LBRA Return
           
PrintOption6:
           movb #'6',disp+16
           movb #'.',disp+17
           movb #' ',disp+18
           movb #'P',disp+19
           movb #'l',disp+20
           movb #'a',disp+21
           movb #'n',disp+22
           movb #'t',disp+23
           movb #' ',disp+24
           movb #'s',disp+25
           movb #'e',disp+26
           movb #'e',disp+27
           movb #'d',disp+28
           movb #'s',disp+29
           movb #' ',disp+30
           movb #' ',disp+31
           movb #0,disp+32    ;string terminator, acts like '\0'
           
           ;print the prompt string
		       LDD   #disp         ;both of these steps are necessary to
           jsr  display_string ;print to the LCD screen
           
           ;get out of the menu, do not go to PrintOption6
           BRA  Return
           
PrintOption7:
           movb #'7',disp+16
           movb #'.',disp+17
           movb #' ',disp+18
           movb #'S',disp+19
           movb #'h',disp+20
           movb #'o',disp+21
           movb #'w',disp+22
           movb #' ',disp+23
           movb #'p',disp+24
           movb #'l',disp+25
           movb #'o',disp+26
           movb #'t',disp+27
           movb #' ',disp+28
           movb #' ',disp+29
           movb #' ',disp+30
           movb #' ',disp+31
           movb #0,disp+32    ;string terminator, acts like '\0'
           
           ;print the prompt string
		       LDD   #disp         ;both of these steps are necessary to
           jsr  display_string ;print to the LCD screen
           
           ;get out of the menu, do not go to PrintOption7
           BRA  Return
           

            
Return:     ;restore registers and accumulators
            PULY
            PULX
            PULD
            PULB
            PULA
            
            RTS