.include "m8def.inc"

.def temp1 = r16

.cseg
	rjmp	start				;reset handle
	reti	;INT0 External Interrupt Request 0
	reti	;INT1 External Interrupt Request 1
	reti	;TIMER2 COMP Timer/Counter2 Compare Match
	reti	;TIMER2 OVF Timer/Counter2 Overflow
	reti	;TIMER1 CAPT Timer/Counter1 Capture Event
	reti	;TIMER1 COMPA Timer/Counter1 Compare Match A
	reti	;TIMER1 COMPB Timer/Counter1 Compare Match B
	reti	;TIMER1 OVF Timer/Counter1 Overflow
	reti	;TIMER0 OVF Timer/Counter0 Overflow
	reti	;SPI, STC Serial Transfer Complete
	reti	;USART, RXC USART, Rx Complete
	reti	;USART, UDRE USART Data Register Empty
	reti	;USART, TXC USART, Tx Complete
	reti	;ADC ADC Conversion Complete
	reti	;EE_RDY EEPROM Ready
	reti	;ANA_COMP Analog Comparator
	reti	;TWI Two-wire Serial Interface
	reti	;SPM_RDY Store Program Memory Ready

start:
	ldi	temp1,LOW(RAMEND)	;LOW-Byte der obersten RAM-Adresse
	out	SPL,temp1
	ldi	temp1,HIGH(RAMEND)	;HIGH-Byte der obersten RAM-Adresse
	out	SPH,temp1


	ldi	temp1,0x00
	out	DDRD,temp1

	ldi	temp1,0xFF
	out	DDRB,temp1
	ldi	temp1,0x00
	out	PortB,temp1

	rcall	Watchdog_on

	rjmp	MainLoop			; Ab ins Programm!!!
reti

Watchdog_on:
	in	temp1,WDTCR
	sbr	temp1, 0<<WDTOE | 1<<WDE | 1<<WDP2 | 1<<WDP1 | 1<<WDP0 ;2048ms
	out	WDTCR,temp1
ret

Watchdog_off:
	in	temp1,WDTCR
	sbr	temp1, 1<<WDTOE | 1<<WDE
	out	WDTCR,temp1
	cbr	temp1, 1<<WDE
	out	WDTCR,temp1
ret

MainLoop:
	;PortD einlesen und auf PortB ausgeben
	in		temp1,PIND
	out		PortB,temp1

	;Gute Nacht! (Power-down; Aufwachen per Watchdog)
	in		temp1,MCUCR
	ori		temp1,(1<<SE|0<<SM2|1<<SM1|0<<SM0)

	out		MCUCR,temp1

	sleep

	rjmp	MainLoop