Home > Articles > Electronics > Microcontroller > 8051/8951 > Stepper motor control board

Stepper motor control board

Monday, November 17th, 2008

Program 3:-

This is also easy program. Now three keys are used and three LEDs are used. Please refer table. The speed of motor is again fixed at 20 RPM. The mode is double coil excitation.

Org 00h
mov r0,#01h         ; initileze key count
mov p1,#0ffh        ; P1 as input port
lop:   mov a,p1
cjne a,#0ffh,jmp
ajmp lop               ; loop until any key is pressed

jmp:     clr p0.0              ; indicates keypress
loop:    rrc a
jnc num                ; get key no.
inc r0
sjmp loop
num: acall dely          ; key debounce delay
setb p0.0

cjne r0,#01h,nxt   ; for 1st key rotate motor
acall clkwise          ; clock wise
sjmp over
nxt: cjne r0,#02h,nxt2  ; for 2nd key
acall aclkwise           ; rotate anticlock
nxt2:   cjne r0,#03h,over ; for 3rd key
mov p2,#00h             ; stop motor
over:   mov r0,#01h
sjmp lop          ; jump to loop again

clkwise:
lop:   clr p0.1
mov p2,#03h        ; at a time two coils
acall delay            ; energized in double
mov p2,#06h        ; coil excitation mode
acall delay
setb p0.1
mov p2,#0Ch
acall delay
mov p2,#09h
acall delay
mov p1, #0FFh      ; continue loop
mov a,p1               ; until any key is
cjne a,#0FFh,out   ; not pressed
sjmp lop
out:   ret
aclkwise:
lop1: clr p0.1
mov p2,#03h
acall delay
mov p2,#09h        ; revert the pulse
acall delay            ; sequence for
setb p0.1
mov p2,#0Ch        ; anticlockwise
acall delay
mov p2,#06h
acall delay
mov p1, #0FFh
mov a,p1
cjne a,#0FFh,out1
sjmp lop1
out1:  ret

delay:
mov r5,#0Fh         ; load count 15
lop2: mov r6,#FAh      ; give 1 ms delay
lop1:nop                    ; so it gives full
nop                       ; 15 ms delay
djnz r6,lop1          ; to give speed
djnz r5,lop2           ; of 20 RPM
ret

dely:
mov r5,#0C8h          ; load count 200
lop2: mov r6,#0FAh       ; for 200ms delay
lop1:nop
nop
djnz r6,lop1
djnz r5,lop2
ret
end

Program 4:-
This  program is same as above but now the mode is changed to half step and RPM is now 30.

Org 00h
mov r0,#01h        ; initileze key count
mov p1,#0ffh       ; P1 as input port
lop:   mov a,p1
cjne a,#0ffh,jmp
ajmp lop               ; loop until any key is pressed

jmp:     clr p0.0              ; indicates keypress
loop:    rrc a
jnc num                ; get key no.
inc r0
sjmp loop
num: acall dely         ; key debounce delay
setb p0.0

cjne r0,#01h,nxt      ; for 1st key
acall clkwise             ; rotate motor
sjmp over                  ; clock wise
nxt: cjne r0,#02h,nxt2  ; for 2nd key
acall aclkwise           ; rotate anticlock
nxt2:   cjne r0,#03h,over  ; for 3rd key
mov p2,#00h             ; stop motor
over:   mov r0,#01h
sjmp lop                     ; jump to loop again

clkwise:
lop:   clr p0.1
mov p2,#01h         ; alternate pulses
acall delay             ; given one from
mov p2,#03h         ; single coil second
acall delay              ; from double coil
mov p2,#02h         ; in half step mod
acall delay
mov p2,#06h
acall delay
setb p0.1
mov p2,#04h
acall delay
mov p2,#0Ch
acall delay
mov p2,#08h
acall delay
mov p2,#09h
acall delay
mov p1, #0FFh       ; continue loop
mov a,p1                ; until any key is
cjne a,#0FFh,out   ; not pressed
sjmp lop
out:   ret
aclkwise:
lop1: clr p0.1
mov p2,#01h
acall delay
mov p2,#03h         ; revert the pulse
acall delay             ; sequence for
mov p2,#08h        ; anticlockwise
acall delay
mov p2,#09h
acall delay
setb p0.1
mov p2,#04h
acall delay
mov p2,#0Ch
acall delay
mov p2,#02h
acall delay
mov p2,#06h
acall delay
mov p1, #0FFh
mov a,p1
cjne a,#0FFh,out1
sjmp lop1
out1:  ret
delay:
mov r5,#0Ah          ; load count 10
lop2: mov r6,#FAh         ; give 1 ms delay
lop1: nop                        ; so it gives full
nop                         ; 10 ms delay
djnz r6,lop1            ; to give speed
djnz r5,lop2            ; of 30 RPM
ret
dely:
mov r5,#0C8h         ; load count 200
lop2: mov r6,#0FAh        ; for 200ms delay
lop1: nop
nop
djnz r6,lop1
djnz r5,lop2
ret
end

Pages: 1 2 3 4 5

Avatar Image

Author Name :
Ranjith

Total : 28 Comments

Simillar Posts

28 Responses to Stepper motor control board

  1. Naqash
    December 18th, 2008 at 9:05 pm

    da program gives syntax error when it is build in keil software.
    its give error for cjne a,#0ffh,jmp. n
    jmp clr p0.0……..

  2. ranjith
    December 19th, 2008 at 9:39 am

    Hi, here jmp is used as a label. Please change jmp to some other name. for example
    cjne a,#0ffh,keypress
    keypress: clr p0.0

  3. naqash
    December 20th, 2008 at 9:01 pm

    it also gives error here
    lop2:mov r6,#FAh ; give 1 ms delay :the error is undefined symbol(pass 2).
    lop2: mov r6,#0FAh ; for 200ms delay : attempt to define already defined label.
    lop1: nop attempt to define already defined label.

  4. Naqash
    December 21st, 2008 at 11:44 pm

    hi plz tell me abt these error in program
    n i m using of Seiko epson EM-198.
    will it operate with 7805.

  5. Ranjith
    December 26th, 2008 at 4:07 pm

    Hi replace “dely” function as given below.
    ———————-
    dely:
    mov r5,#0C8h ; load count 200
    lop22: mov r6,#0FAh ; for 200ms delay
    lop11:nop
    nop
    djnz r6,lop11
    djnz r5,lop22
    ret
    ———————–

  6. Wharliaverisa
    January 22nd, 2009 at 8:34 am

    Nothing seems to be easier than seeing someone whom you can help but not helping.
    I suggest we start giving it a try. Give love to the ones that need it.
    God will appreciate it.

  7. gretamandisson
    June 14th, 2009 at 4:33 am

    I’m new here on the forum, found it by searching google. I look forward to chatting about various topics with all of you.

  8. chandran
    August 7th, 2009 at 1:05 pm

    It is interesting. Can you mail me the full details of the circuits

  9. For Sale
    February 11th, 2010 at 7:30 pm

    Good stuff. I like this blog. I will subscribe to it.

  10. vinod
    March 3rd, 2010 at 5:14 pm

    very good circuit … can you mail the full details and explainations of the circuit.

  11. omar
    March 7th, 2010 at 1:32 am

    can u tell me how to control pitman motor using at89s51 through h bridge give ,jut move the motor in forward and reverse direction ,and also give me a small cobe to drive the motor through h bridge using at89s51

  12. muthu
    March 25th, 2010 at 3:37 pm

    sperb thank u

  13. Chucculty
    April 5th, 2010 at 10:20 pm

    А телефон свой не оставите? Хотелось бы кое-что обсудить по теме.

  14. naina
    May 21st, 2010 at 10:45 am

    hey the project is nice but is there any problem in the programs is they give error

  15. purna
    June 3rd, 2010 at 10:11 am

    hi, please give the full information about the stepper motor

  16. Ashok Shah
    June 30th, 2010 at 5:42 pm

    Nice project for learners. Is it available in kit form at a reasonable price?
    Are the problems solved or still existing?

  17. Taio Cruz
    July 12th, 2010 at 10:30 am

    Cheers, superb post.

  18. Tushar
    July 29th, 2010 at 3:03 pm

    Hi . . .can you mail me the full detail of the circuit diagram and the
    program.

  19. sonali
    August 2nd, 2010 at 9:40 pm

    AS THIS IS IN ASSEMBLY AND NOT IN ‘C’ DONT USE KEIL USE “ASEM” OR “RAISONANCE” INSTEAD.

  20. zahid
    August 26th, 2010 at 12:43 am

    in new ustzz

  21. Anne @ Cincinnati 4G Wireless
    January 22nd, 2011 at 6:28 am

    Hi there, just wandered by. I have a Cincinnati 4g site. Amazing the amount of information on the web. Wasn’t what I was looking for, but great site. Take care.

  22. minhaj
    March 22nd, 2011 at 6:18 pm

    dear sir i want a program for only one directional revolution that means clockwise revolution..for fixed RPM

  23. [SOLVED] stepper motor conttrol by using atmel89c51
    August 26th, 2011 at 9:46 am

    [...] stepper motor conttrol by using atmel89c51 Here are some example projects using the AT89C51: Stepper motor control board STEPPER MOTOR CONTROL USING 89C51 MICROCONTROLLER Microcontroller Based Clockwise/Anticlockwise [...]

  24. praveensp
    August 26th, 2011 at 4:20 pm

    thanks for this information its very useful for my project

  25. divya
    August 27th, 2011 at 6:06 pm

    please send me more details about it…
    it is very nice..

  26. pintu
    October 6th, 2011 at 7:20 pm

    p.asm(5): error A9: SYNTAX ERROR
    p.asm(7): error A5: ILLEGAL USE OF A RESERVED WORD
    p.asm(7): error A9: SYNTAX ERROR
    p.asm(7): error A9: SYNTAX ERROR
    p.asm(8): error A8: ATTEMPT TO DEFINE AN ALREADY DEFINED LABEL
    p.asm(22): error A45: UNDEFINED SYMBOL (PASS-2)
    p.asm(24): error A8: ATTEMPT TO DEFINE AN ALREADY DEFINED LABEL
    p.asm(37): error A45: UNDEFINED SYMBOL (PASS-2)
    p.asm(57): error A45: UNDEFINED SYMBOL (PASS-2)
    p.asm(58): error A8: ATTEMPT TO DEFINE AN ALREADY DEFINED LABEL
    p.asm(65): error A8: ATTEMPT TO DEFINE AN ALREADY DEFINED LABEL
    p.asm(66): error A8: ATTEMPT TO DEFINE AN ALREADY DEFINED LABEL
    Target not created

    this types of errors in program no 3 what can i do?

  27. Mulberry - NetworkTemple - (NT) -
    December 20th, 2011 at 2:17 am

    [...] Mulberry There will be sufficient signals which Tiongkok may really do the main connected with market cheap mulberry bags monetary increase for a while to reach you mulberry output line shop. A multitude of Britain reduced establishments might utilize that, especially while using the industrial, power in addition for you to online mtsghrza industries. Mulberry Alexa Handbag (pictured) includes gotten good care of his or her holdings throughout on the net retail merchant ASOS, which just after reliable forex trade went up by 85%. These days there may be over More than 200 lecturer stores merely america and concepts that you can obtainable a full fantastic offer extra suppliers globally inside of the future, an italian man, specialit which had considered around mulberry alexa large during 2000 created everywhere improve with burberrys light in the book bag marketplace! These are in most cases fuzy as well as sewed by hand, Mulberry 18643 mulberry bags madison accrued leather lindsey satchel wine red colored for ladies with offering inside our own store retail store online. Popular designs this previous a life time are generally just what exactly Mulberry 17003 madison laser lessen op craft leather whirlpool sophia satchel produce that will guys together with females. Presently there have ended Above two hundred lecturer merchants just the united states and concepts that will available a total wonderful give more retailers around the globe ultimately, the italian specialist whom needed over Mulberry Alexa Handbag within 2004 fabricated ample improve around burberrys soft through pack cheap mulberry bags promote! They can be readily subjective additionally padded in your hands, Mulberry 18643 madison obtained leather based lindsey satchel wines beverages reddish for females upon selling for our store retail outlet world-wide-web. ae1334d01be6a6a21 Mulberry Bags Sale, Mulberry Bags Online, Mulberry Bags UK Discount Mulberry brand bags mulberry bags outlet Mulberry [...]

  28. Andrew cholak
    January 18th, 2012 at 12:16 pm

    hey Ranjith,
    I was looking at some of the work you have done, i am quiet amazed by your skill level. I would want to implement some of your work, if you would allow me to ofcourse. Would it be possible if i get you to email me to discuss this further? my email should appear to you. Please Email me as soon you get this .
    thanks
    Andrew Cholak

Leave a Reply

Question and Answer
C/C++ Unix & Linux Wordpress
Source codes
C C++ Java

Free email signup