.org 0x0000
        rjmp    main                  ; Reset Handler
.org OVF0addr
        rjmp    timer0_overflow       ; Timer Overflow Handler
 
main:
           ldi temp1, RAMEND
           out SP, temp1

           ldi temp1, 0xFF    ;Port A = Ausgang
           out DDRA, temp1

		   ldi temp1, 0x00    ;Port B = Eingang
           out DDRB, temp1
		   ldi temp1, 0xFF   ; die Pullup Widerstände aktivieren
      	   out PORTB, temp1

           rcall lcd_init     ;Display initialisieren
           rcall lcd_clear    ;Display löschen
		   rcall lcd_welcome  ;Wilkommen

		   rcall lcd_zeit_init	  ;Zeit Modus

		   rcall timer_init

		  

loop:
          
		   rcall tasten_abfrage

		   rjmp loop


;-----------------------------------------------------------------------------------
;Tasten Abfrage
tasten_abfrage:
		   in keys, PINB		;Taster lesen
		   ori keys, 0b10110000	;Maske der PINS der Taster
		   
		   ;ldi keys, 0b11111111
		   com keys

		   ldi temp1, 1<<links
		   cpi keys, 1<<start   ;Start gedrückt?
		   breq start_
		   cpi keys, 1<<links   ;Links gedrückt?
		   breq links_
		   cpi keys, 1<<rechts  ;Rechts gedrückt?
		   breq rechts_
		   cpi keys, 1<<hoch    ;Hoch gedrückt?
		   breq hoch_
		   cpi keys, 1<<runter  ;Runter gedrückt?
		   breq runter_

		   ret
start_:
		   rcall start_f
		   ret
links_:
		   rcall links_f
		   ret
rechts_:
		   rcall rechts_f
		   ret
hoch_:
		   rcall hoch_f
		   ret
runter_:
		   rcall runter_f
		   ret

;-----------------------------------------------------------------------------------
;Start
start_f:
		   push temp1		   

		   rcall lcd_clear
		   rcall lcd_home

		   ldi temp1, 'S'
		   rcall lcd_data
		   ldi temp1, 't'
		   rcall lcd_data
		   ldi temp1, 'a'
		   rcall lcd_data
		   ldi temp1, 'r'
		   rcall lcd_data
		   ldi temp1, 't'
		   rcall lcd_data
		   ldi temp1, '!'
		   rcall lcd_data
		   
		   pop temp1

		   ret

;-----------------------------------------------------------------------------------
;Links
links_f:
		  /* cpi cursor_pos, sec_1_pos
		   brne next_l
		   ldi cursor_pos, sec_10_pos
		   rjmp out_l
next_l:
		   cpi cursor_pos, sec_10_pos
		   brne next_l1
		   ldi cursor_pos, min_1_pos
		   rjmp out_l
next_l1:
		   cpi cursor_pos, min_1_pos
		   brne next_l2
		   ldi cursor_pos, min_10_pos
		   rjmp out_l
next_l2:
		   ldi cursor_pos, sec_1_pos

out_l:*/

		   push temp1		   

		   rcall lcd_clear
		   rcall lcd_home

		   ldi temp1, 'L'
		   rcall lcd_data
		   ldi temp1, 'i'
		   rcall lcd_data
		   ldi temp1, 'n'
		   rcall lcd_data
		   ldi temp1, 'k'
		   rcall lcd_data
		   ldi temp1, 's'
		   rcall lcd_data
		   ldi temp1, '!'
		   rcall lcd_data
		   
		   pop temp1

		   ret

;-----------------------------------------------------------------------------------
;Rechts
rechts_f:
		   /*cpi cursor_pos, sec_1_pos
		   brne next_r
		   ldi cursor_pos, min_10_pos
		   rjmp out_r
next_r:
		   cpi cursor_pos, sec_10_pos
		   brne next_r1
		   ldi cursor_pos, sec_1_pos
		   rjmp out_r
next_r1:
		   cpi cursor_pos, min_1_pos
		   brne next_r2
		   ldi cursor_pos, sec_10_pos
		   rjmp out_r
next_r2:
		   ldi cursor_pos, min_1_pos

out_r:*/
		   push temp1		   

		   rcall lcd_clear
		   rcall lcd_home

		   ldi temp1, 'R'
		   rcall lcd_data
		   ldi temp1, 'e'
		   rcall lcd_data
		   ldi temp1, 'c'
		   rcall lcd_data
		   ldi temp1, 'h'
		   rcall lcd_data
		   ldi temp1, 't'
		   rcall lcd_data
		   ldi temp1, 's'
		   rcall lcd_data
		   ldi temp1, '!'
		   rcall lcd_data
		   
		   pop temp1

		   ret

;-----------------------------------------------------------------------------------
;Hoch
hoch_f:
		   /*mov temp1, cursor_pos    ; zu Cursor springen
		   rcall lcd_command

		   inc sec_1_rg
		   mov temp1, sec_1_rg     ; Nummer zu String
		   rcall num2str

           rcall lcd_data*/

		   push temp1		   

		   rcall lcd_clear
		   rcall lcd_home

		   ldi temp1, 'H'
		   rcall lcd_data
		   ldi temp1, 'o'
		   rcall lcd_data
		   ldi temp1, 'c'
		   rcall lcd_data
		   ldi temp1, 'h'
		   rcall lcd_data
		   ldi temp1, '!'
		   rcall lcd_data
		   
		   pop temp1

		   ret

;-----------------------------------------------------------------------------------
;Runter
runter_f:
		   /*mov temp1, cursor_pos    ; zu Cursor springen
		   rcall lcd_command

		   dec sec_1_rg
		   mov temp1, sec_1_rg     ; Nummer zu String
		   rcall num2str

           rcall lcd_data*/

		   push temp1		   

		   rcall lcd_clear
		   rcall lcd_home

		   ldi temp1, 'R'
		   rcall lcd_data
		   ldi temp1, 'u'
		   rcall lcd_data
		   ldi temp1, 'n'
		   rcall lcd_data
		   ldi temp1, 't'
		   rcall lcd_data
		   ldi temp1, 'e'
		   rcall lcd_data
		   ldi temp1, 'r'
		   rcall lcd_data
		   ldi temp1, '!'
		   rcall lcd_data
		   
		   pop temp1
		   
		   ret