; Titel : 
;-------------------------------------------------------------------------
; Funktion : 
; Schaltung : 
;-------------------------------------------------------------------------
; Prozessor : ATmega8
; Takt : 3686400 Hz
; Sprache : Assembler (GNU)
; Datum : 6.7.2010
; Version : 1.0
; Autor : 
; Programmer: 
; Port : 
;-------------------------------------------------------------------------
; created by myAVR-CodeWizard
;-------------------------------------------------------------------------
.equ	F_CPU,	3686400
.include	"AVR.H"

begin: 
	rjmp	main
 	reti 	
 	reti 	
 	reti 	
 	reti 	
 	reti 	
 	reti 	
 	reti 	
 	reti 	
 	reti 	
 	reti 	
 	reti 	
 	reti 	
 	reti 	
 	rcall	 onADC 	
 	reti 	
 	reti 	
 	reti 	
 	reti 	
;------------------------------------------------------------------------
; Initialisierungen
;------------------------------------------------------------------------
main:
 	;--- Stack Initialisierung ---
 	ldi 	r16,hi8(RAMEND)
 	out 	SPH,r16
 	ldi 	r16,lo8(RAMEND)
 	out 	SPL,r16
 	; UART initialisieren
	sbi	UCSRB,3	;USR=UCSRB=0x0A TXEN=Bit3 TX aktivieren
	ldi	r16,3686400/(9600*16)-1	;Baudrate 9600 einstellen
	out	UBRRL,r16
; ADC initialisieren
	cbi	DDRC,0
	ldi	r16,0b01000000
	out	ADMUX,r16
	ldi	r25,0b11011101
	out	ADCSRA,r25
	

	sei
;------------------------------------------------------------------------
; Hauptprogramm-Schleife
;------------------------------------------------------------------------
mainloop:
 	rjmp	putChar
 	rjmp 	mainloop

 
putChar:
	sbis	UCSRA,5	;USR=UCSRA=0x0B UDRE=Bit5
	rjmp	putChar	;warten, bis UDR bereit
	out	UDR,r25
	ret	
 
;ADC:
onADC:	cli
	in	r26,ADCL
	in	r27,ADCH
	asr	r27
	ror	r26
	asr	r27
	ror	r26
	mov	r25,r26
	sbi	ADCSRA,6
	sei
	reti