rd_ad10.asm

隧道灯控制 隧道灯控制 隧道灯控制

ADC SEGMENT CODE
PUBLIC     read_ad
RSEG       ADC

read_ad:
cs_ad  bit P0.4
sck_ad bit P0.6
sdo_ad bit P0.5

rd_adx:
	;output  r6,H  r7,l
	clr	sck_ad
	clr	cs_ad

	clr	a
        
;	mov	r7,#2
;rd_adnext1:
;	setb	sck_ad
;	mov	c,sdo_ad
;	rlc	a
;	clr	sck_ad
;	djnz	r7,rd_adnext1
;	mov	r6,a

	clr	a
	mov	r7,#8
rd_adnext:
	setb	sck_ad
	mov	c,sdo_ad
	rlc	a
	clr	sck_ad
	djnz	r7,rd_adnext

	setb	cs_ad
	mov	r7,a
	ret

        END