cs_t.asm

基于UCM40的超声波测距函数,可测0.08---2.5米距离,数值精确

		NAME CS_T
?PR?CS_T?CS_T   SEGMENT CODE
        	PUBLIC  CS_T
		RSEG    ?PR?CS_T?CS_T
CS_T:		PUSH    ACC
		MOV     TH0,#00H
		MOV     TL0,#00H
		MOV 	A,#4D
		SETB	TR0
CS_T1:		CPL	P3.1
		NOP
		NOP
		NOP
		NOP
		NOP
		NOP
		NOP
		NOP
		NOP
		NOP
		DJNZ   	ACC,CS_T1
		POP	ACC
		RET
;
		END