started elcectronics cw2

1 files changed, 69 insertions, 0 deletions

diff --git a/electronics/cw2/final.asm b/electronics/cw2/final.asm
new file mode 100644
index 0000000..fd4ad7d
--- /dev/null
+++ b/electronics/cw2/final.asm
@@ -0,0 +1,69 @@
+init: 
+	clrf    PORTA         ; make sure port A output latches are low 
+	clrf    PORTB         ; make sure port B output latches are low 
+	bsf     STATUS,RP0    ; select memory bank 1 
+	movlw 	b'11111111'   ; set port A data direction to inputs 
+	movwf 	TRISA          
+	movlw 	b'00000000'   ; set port B data direction to outputs 
+	movwf 	TRISB        
+	bcf     STATUS,RP0    ; select memory bank 0 
+	BACK 	equ B4
+	goto    main 
+
+volow:
+	movlw	b'00000001'
+	movwf	PORTB
+	goto 	main
+vomid:
+	movlw	b'00000011'
+	movwf	PORTB
+	goto 	main
+vohigh:
+	movlw	b'00000111'
+	movwf	PORTB
+	goto 	main
+vovhigh:
+	movlw	b'00001111'
+	movwf	PORTB
+	goto 	main
+
+
+convert:
+	andlw	b'00001111'
+	movwf	BACK
+
+	andlw   b'00001100'
+	btfsc 	STATUS, Z
+	goto 	volow
+	movf 	BACK, W
+
+	andlw 	b'00001100'
+	sublw	b'00000100'
+	btfsc 	STATUS, Z
+	goto 	vomid	
+	movf 	BACK, W
+
+	andlw   b'00001100'
+	sublw	b'00001000'
+	btfsc 	STATUS, Z
+	goto  	vohigh	
+	movf 	BACK, W
+
+	andlw   b'00001100'
+	sublw	b'00001100'
+	btfsc 	STATUS, Z
+	goto  	vovhigh	
+	movf 	BACK, W
+	
+	goto 	main
+main:
+	;goto 	vovhigh
+
+	call 	readadc0
+	movf	B0, W
+
+	goto 	convert
+
+	goto 	main
+
+	end