Forum: Mikrocontroller und Digitale Elektronik Kein EEPROM Interupt

von Hubert Papst (Gast)

15.01.2004 09:31

Lesenswert?

•

Hallo Leute
habe folgendes Problem
Der hier abgebildetet Beispielcode generiert mir keinen EEPROM_Ready
Interupt - Warum????

reset:
   rjmp start
   reti      ; Addr $01
   reti      ; Addr $02
   reti      ; Addr $03
   reti      ; Addr $04
   reti      ; Addr $05
   reti      ; Addr $06        Use 'rjmp myVector'
   reti      ; Addr $07        to define a interrupt vector
   reti      ; Addr $08
   reti      ; Addr $09
   reti      ; Addr $0A
   reti      ; Addr $0B        This is just an example
   reti      ; Addr $0C        Not all MCUs have the same
   reti      ; Addr $0D        number of interrupt vectors
   reti      ; Addr $0E
   rjmp EERDY      ; Addr $0F
   reti      ; Addr $10

; Program starts here after Reset
;
start:
   ldi temp1, low(RAMEND)
   out SPL, temp1
   ldi temp1, high(RAMEND)
   out SPH, temp1
   sbi EECR,EERIE
   sei     ;


EEWrite:
   sbic EECR,EEWE
   rjmp EEWrite

   ldi temp1,0
   out EEARH,temp1
   ldi temp1,1
   out EEARL,temp1
   ldi temp1,0x44
   out EEDR,temp1

   sbi EECR,EEMWE
   sbi EECR,EEWE


forever:
   rjmp forever


EERDY:
   ldi temp1,0x55
   out EEDR,temp1
   sbi EECR,EEMWE
   sbi EECR,EEWE
   reti

mfg
Hubert