Arbeiten mit LEDs/ Matrix/ Code

Aus Wikibooks
Zur Navigation springen Zur Suche springen
;--------------------------------------------------------------------
;
; Code.asm
;
; Version 7                 	Datum: 19.05.2007
;
; PROGRAMER: Michael Frey
; 
; Für PIC16F505 Prozessor mit internem RC Oszillator
;
; 8x8 LED Matrix Animation Engine
;--------------------------------------------------------------------

; Assembler Direktiven

		list      P=16F505, r=hex
		include   P16F505.inc
		__CONFIG _WDT_OFF & _MCLRE_OFF & _CP_OFF & _IntRC_OSC_RB4EN	; Watchdogtimer & Masterclear OFF, Codeprotection OFF


movlf   	macro     value,destfile
	          movlw     value
	          movwf     destfile
	        endm

movff   	macro     source,destfile
	          movf      source, w
	          movwf     destfile
	        endm
movb     	macro source, sourcebit, dest, destbit
				;BTFSS	source,sourcebit Spart eine Anweissung
				BCF		dest,destbit
				BTFSC	source,sourcebit
				BSF		dest,destbit
	        endm

;--------------------------------------------------------------------
; Variablen
;--------------------------------------------------------------------

		cblock     h'10'	
			C0
			C1
			ptr

			i	;Laufvariabel
			j	;Laufvariabel


			PortB0
			PortC0
        endc
 
;--------------------------------------------------------------------
; Initialisierung
;--------------------------------------------------------------------

		goto	UpMem	;More Space for the Look Up Table
TabRead:call	Con1	;Please max. 8 Instruction, if there
		goto	back	;are more you lose a frame.

con1:	movwf	PCL
TabA:
		include   test.asm
	    ;include   smile.asm
		;include   hangman.asm
		;include   blank.asm
TabE:

		org  0x100
UpMem:
		; init outputs to 0V
		CLRF	PortB
		CLRF	PortC

		movlw	B'11001111'		; Bit7: Enable Wake-up on Pin Change(PB0, PB1, PB3)	1:disable	0:enable
		option					; Bit6: Enable weak pull-ups(PB0, PB1, PB3)			1:disable	0:enable
								; Bit5: TMR0 clock source selection					1:T0clkPIN	0:internal Fosc/4
								; Bit4: TMR0 source edge selection					1:hi to low	0:low to hi
								; Bit3:	Prescaler assignement						1:to WDT	0:to TMR0 
								; Bit2-0: Prescale value  000:min (1:1 WDT) (1:2 TMR0)  111:max (1:128 WDT) (1:256 TMR0)

		movlw	B'00001000'		;init value for tris-register
		tris	PortB

		movlw	B'00000000'		;init value for tris-register
		tris	PortC

MainLoop:
		movlf 	tabA-8,i		;For i=tabA to tabE-8 step +8
For0:	movlw	d'8'
		BCF		Status,C
		addwf   i,f

		movlf	d'100',c1		;	For c1=100 to 0 step -1


For1:	movlf	h'08',	j		;		For j=7 to 0
For3:	decf	j,f

		movff	i,ptr
		movff	j,PortB0		;			PortB0 = -j, w = j
		comf	PortB0,f

		BCF		Status,C		;			Table read
		Addwf	ptr,w
		goto	TabRead
back:

		movwf	PortC0			;			(prepare output)
		movb 	PortC0,6, PortB0,4
		movb	PortC0,7, PortB0,5

		movff 	PortB0, PortB	;			Output
		movff 	PortC0, PortC

		movlf	d'255',c0		; 			~ 500us
BL0:	DECFSZ	c0, F
		goto	BL0

		movf	j,w				;		Next J
		BTFSS	Status,Z
		Goto	For3


		DECFSZ	c1, F			;	Next c1
		goto	For1

		movf 	i,w 			;Next i
		xorlw 	tabE-8
		BTFSS	Status,Z
		Goto	For0

		goto	MainLoop
		end