This KuanBu into motor driving voltage of the 12 V, step Angle was 7.5 degrees. A circle 360 degrees, need 48 pulse finish!
http://www.siliconray.com/thumb-usb-stc-8051-mcu-programmer-1.html
The stepping motor has six of the lead, rankings are as follows: 1: red, 2: red, 3: orange, 4: brown, 5: yellow, 6: black.
The driver of the method ULN2003 51 driver.
ULN2003 driver directly in the single-chip microcomputer system 5 V voltage, may torque is not very big, you can increase by driving voltage to 12 V.
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; * * * * * * * * * * * * * * * * * * * * * * * * * * * * the step motor drive * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
ORG 0000H
LJMP MAIN
ORG 0100H
MAIN:
MOV R3,#144 正转 3 圈共 144 脉冲
START:
MOV R0,#00H
START1:
MOV P2,#00H
MOV A,R0
MOV DPTR,#TABLE
MOVC A,@A+DPTR
JZ START 对 A 的判断,当 A = 0 时则转到 START
MOV P2,A
LCALL DELAY
INC R0
DJNZ R3,START1
MOV P2,#00H
LCALL DELAY1
;-----------------------------反转------------------------
MOV R3,#144 反转一圈共 144 个脉冲
START2:
MOV P2,#00H
MOV R0,#05
START3:
MOV A,R0
MOV DPTR,#TABLE
MOVC A,@A+DPTR
JZ START2
MOV P2,A
CALL DELAY
INC R0
DJNZ R3,START3
MOV P2,#00H
LCALL DELAY1
LJMP MAIN
DELAY: MOV R7,#40 步进电机的转速
M3: MOV R6,#248
DJNZ R6,$
DJNZ R7,M3
RET
DELAY1: MOV R4,#20 2S 延时子程序
DEL2: MOV R3,#200
DEL3: MOV R2,#250
DJNZ R2,$
DJNZ R3,DEL3
DJNZ R4,DEL2
RET
TABLE:
DB 30H,60H,0C0H,90H 正转表
DB 00 正转结束
DB 30H,90H,0C0H,60H 反转表
DB 00 反转结束
END
