89c51 步进电机的控制

Question

要求：实现步进电机的顺转、逆转以及转速调整

Answer 1

电路图所在位置:
http://hi.baidu.com/tianhj2001/album/item/c0dc7d4fc718aed7d1c86a98.html
;文件名：DJ15-4.ASM
;程序功能：开关控制步进电机正反转

K1 EQU P3.2
K2 EQU P3.3
K3 EQU P3.4

STOP: MOV P0, #0FFH

LOOP: JNB K1, Z_M2
JNB K2, F_M2
JNB K3, STOP1
JMP LOOP
;-----------------------------
STOP1: ACALL DELAY
JNB K3, $
ACALL DELAY
JMP STOP

Z_M2: ACALL DELAY
JNB K1, $
ACALL DELAY
JMP Z_M

F_M2: ACALL DELAY
JNB K2, $
ACALL DELAY
JMP F_M

;---------------------------
Z_M: MOV R0,#00H
Z_M1: MOV A, R0
MOV DPTR, #TABLE
MOVC A,@A+DPTR
JZ Z_M
MOV P0,A
JNB K3, STOP1
JNB K2, F_M2
ACALL DELAY
INC R0
JMP Z_M1
RET
;-----------------------------
F_M: MOV R0,#05H
F_M1: MOV A, R0
MOV DPTR, #TABLE
MOVC A,@A+DPTR
JZ F_M
MOV P0,A
JNB K3, STOP1
JNB K1, Z_M2
ACALL DELAY
INC R0
JMP F_M1
RET
;-----------------------------
DELAY: MOV R1,#40
D1: MOV R2,#248
DJNZ R2,$
DJNZ R1,D1
RET
;-----------------------------
TABLE: DB 0FCH, 0F9H, 0F3H, 0F6H
DB 00
DB 0F7H, 0F3H, 0FBH, 0F9H
DB 0FDH, 0FCH, 0FEH, 0F6H
DB 00
;-------------------------------
END

参考资料：参考资料：http://zhidao.baidu.com/question/78678249.html?si=5

Answer 2

很简单 留下邮箱

Answer 3

课本上有啊