8051 Program – frequency measurement

; frequency measurementt
; frequency on P3.4
	ORG 0H
MAIN:	MOV TMOD,#05H	; TIMER -0,MODE-1, COUNTER
	MOV TL0, #00H
	MOV TH0, #00H
	SETB TR0
	ACALL DLY
	CLR TR0
	MOV P2,TL0
	MOV P0,TH0
	AJMP MAIN
DLY:
	MOV R3, #08H
L3:	MOV R4, #00H
L2:	MOV R5, #00H
L1:	DJNZ R5, L1
	DJNZ R4, L2
	DJNZ R3, L3
	RET
	END

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List of topics: 8051

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