ad7846c52.asm

通过AD7846和AD588芯片

		ORG	0000H
		LJMP	MAIN
		ORG	0023H
		LJMP	JIES
		ORG	0100H
MAIN:		NOP
		ACALL	INIT1
LOOP:		NOP
		NOP
		NOP
		NOP
		NOP
		SJMP	LOOP
INIT1:	MOV	TH1,#0FDH
		MOV	TL1,#0FDH
		MOV	TMOD,#20H
		MOV	TCON,#40H
		SETB	ES
		MOV	SCON,#50H

		CLR	EA
		CLR	P3.4
		CLR	P3.6
		SETB	P3.3
		SETB	P3.2
		NOP
		NOP
		MOV	R0,#80H
		MOV	R1,#00H
		MOV	P2,R0
		MOV	P0,R1
		CLR	P3.2
		SETB	P3.2
		SETB	EA
		RET
JIES:		CLR	RI
		CLR	EA
		MOV	A,SBUF
		ANL	A,#0FH
		MOV	R2,A
		DEC	A
		JZ	XTJ1
		DEC	A
		JZ	XTZ1
		DEC	A
		JZ	CTJ1
		DEC	A
		JZ	CTZ1
		LJMP	FANHUI
XTJ1:		MOV	A,R1
		CLR	C
		SUBB	A,#0C8H
		MOV	R1,A
		MOV	A,R0
		SUBB	A,#00H
		MOV	R0,A
		MOV	P2,R0
		MOV	P0,R1

		CLR	P3.2
		SETB	P3.2
		LJMP	FANHUI
XTZ1:		MOV	A,R1
		ADD	A,#0C8H
		MOV	R1,A
		MOV	A,R0
		ADDC	A,#00H
		MOV	R0,A
		MOV	P2,R0
		MOV	P0,R1

		CLR	P3.2
		SETB	P3.2
		LJMP	FANHUI
CTJ1:		MOV	A,R1
		CLR	C
		SUBB	A,#66H
		MOV	R1,A
		MOV	A,R0
		SUBB	A,#06H
		MOV	R0,A
		MOV	P2,R0
		MOV	P0,R1

		CLR	P3.2
		SETB	P3.2
		LJMP	FANHUI
CTZ1:		MOV	A,R1
		ADD	A,#66H
		MOV	R1,A
		MOV	A,R0
		ADDC	A,#06H
		MOV	R0,A
		MOV	P2,R0
		MOV	P0,R1

		CLR	P3.2
		SETB	P3.2
FANHUI:	CLR	RI
		SETB	EA
		RETI
		END