stepmoto.asm

来自「单片机经典例程,包含一百多个经典的例子,其中既有程序,又有仿真」· 汇编 代码 · 共 40 行

	BA	EQU	P1.0
	BB	EQU	P1.1
	BC	EQU	P1.2
	BD	EQU	P1.3

	ORG	8000H
	LJMP	MAIN
	ORG	8100H

MAIN:
	MOV	SP,#60H
	ACALL	DELAY
SMRUN:				;电机控制方式为单双八拍
	MOV	P1,#08H		;A
	ACALL	DELAY
	MOV	P1,#0CH		;AB
	ACALL	DELAY
	MOV	P1,#04H		;B
	ACALL	DELAY
	MOV	P1,#06H		;BC
	ACALL	DELAY
	MOV	P1,#02H		;C
	ACALL	DELAY
	MOV	P1,#03H		;CD
	ACALL	DELAY
	MOV	P1,#01H		;D
	ACALL	DELAY
	MOV	P1,#09H		;DA
	ACALL	DELAY
	SJMP	SMRUN		;循环转动
DELAY:				;单步延时程序
	MOV	R4,#10
DELAY1:	MOV	R5,#250
	DJNZ	R5,$
	DJNZ	R4,DELAY1
	RET
	END