dec27seg.asm

it consist of PCF8583 assembly driver

;--------------- Encoding SubRoutine From DEC(BCD) to 7-SEGMENT -------------- 

DEC_2_7SEG:	
		push	r16		;
		push	ZL		;
		push	r17		;Push Rx to stack
		
		
		
		ldi	r16,4		;Counter=0...4
		ldi	ZL,DIGITS*2	;First adress of digits codes

DEC1:		ld	r17,Y+		;Load to r17 DEC digit whith post adr INCR 
		add	ZL,r17		;Get new adr for DIGITS offset
		LPM			;LPM from ZL to R0

		st	X+,R0		;Store digit in 7SEG code with post adr INCR
		dec	r16		;Decrement counter
		ldi	ZL,DIGITS*2	;Recover First adress of digits codes
		brne	DEC1		;If counter not 0 goto DEC1

		

		pop r17			;
		pop ZL			;
		pop r16			;Pop Rx from stack
		
		RET