delay_time.asm

按键控制步进电机正反转

PUBLIC _DELAY
DE SEGMENT CODE
RSEG DE
_DELAY:

	NOP
	MOV A,R6
	PUSH ACC
	MOV A,R7
	RL  A      ;R7中的值乘2
	MOV R7,A
DL1:
	MOV R6,#7DH;
DL2:
	NOP
	NOP
	DJNZ R6,DL2
	DJNZ R7,DL1

	POP ACC
	MOV R6,A
	RET
	END