►Programming Full step Sequence

►C Programming
I am assuming that stepper motor is connected at Port 1.0 to Port 1.3. Adjusting the delay will increase or decrease the speed of the motor. Here just for demonstration i have taken some delay, you can change it as you want.

[Tip: Do testing.. ]




#include <REG2051.H>
.
#define stepper P1
void delay();

void main(){
	while(1){
		stepper = 0x0C;
		delay();
		stepper = 0x06;
		delay();
		stepper = 0x03;
		delay();
		stepper = 0x09;
		delay();
	}
}

void delay(){
	unsigned char i,j,k;
	for(i=0;i<6;i++)
		for(j=0;j<255;j++)
			for(k=0;k<255;k++);
}



►Assembly Programming

	org 0H

stepper equ P1

main:
	mov stepper, #0CH
	acall delay
	mov stepper, #06H
	acall delay
	mov stepper, #03H
	acall delay
	mov stepper, #09H
	acall delay
	sjmp main

delay:
	mov r7,#4
wait2:
	mov r6,#0FFH
wait1:
	mov r5,#0FFH
wait:
	djnz r5,wait
	djnz r6,wait1
	djnz r7,wait2
	ret
	end


The working of the above code can be seen in the demo animation below.

unipolar stepper motor in full step sequence


►Programming Half step Sequence

►C Programming
Just the main routine changes rest everything remains same, i mean same delay routine.


void main(){
	while(1){
		stepper = 0x08;
		delay();
		stepper = 0x0C;
		delay();
		stepper = 0x04;
		delay();
		stepper = 0x06;
		delay();
		stepper = 0x02;
		delay();
		stepper = 0x03;
		delay();
		stepper = 0x01;
		delay();
		stepper = 0x09;
		delay();
	}
}



►Assembly Programming
Here also the main routine changes rest everything remains same.


main:
	mov stepper, #08H
	acall delay
	mov stepper, #0CH
	acall delay
	mov stepper, #04H
	acall delay
	mov stepper, #06H
	acall delay
	mov stepper, #02H
	acall delay
	mov stepper, #03H
	acall delay
	mov stepper, #01H
	acall delay
	mov stepper, #09H
	acall delay
	sjmp main


The working of the above code can be seen in the demo animation below.

unipolar stepper motor in half step sequence


►Programming for 2-wire connection of Unipolar Stepper Motor

►C Programming
void main(){
	while(1){
		stepper = 0x03;
		delay();
		stepper = 0x01;
		delay();
		stepper = 0x00;
		delay();
		stepper = 0x02;
		delay();
	}
}



►Assembly Programming
main:
	mov stepper, #03H
	acall delay
	mov stepper, #01H
	acall delay
	mov stepper, #00H
	acall delay
	mov stepper, #02H
	acall delay
	sjmp main


The working of the above code can be seen in the demo animation below.

unipolar stepper motor in 2-wire connection mode


►Programming for Bipolar Stepper Motor

►C Programming
void main(){
	while(1){
		stepper = 0x08;
		delay();
		stepper = 0x02;
		delay();
		stepper = 0x04;
		delay();
		stepper = 0x01;
		delay();
	}
}



►Assembly Programming
main:
	mov stepper, #08H
	acall delay
	mov stepper, #02H
	acall delay
	mov stepper, #04H
	acall delay
	mov stepper, #01H
	acall delay
	sjmp main



Now you're ready to use stepper motors. If you have any doubts, please post in the forum.

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DC Motor Tutorial Index
Introduction to Stepper Motors
Stepper Motor Connections
Step Sequence of Stepper Motors
Programming for Stepper Motor

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ExperimenterUK
Thu Nov 20 2014, 06:00 PM
@Mehboob.. I don't think you can do that.
Sat Nov 15 2014, 06:41 AM
Mehboob
Pls can you send me code in c of PWM generation using UART/serial port in 8051.
Fri Nov 14 2014, 02:51 PM
mohammad aqil
NEED A BOOK ON MICROPROCESSOR AND INTERFACING BY D.V.HALL. RIGHT NOW, I SHALL BE VERY THANK FULL TO U....
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m
please code hex project avr blood pressure monitor
Thu Nov 13 2014, 05:56 AM
Lambo
hi mate, whats the ajay-bhargav? tell us more pls
ExperimenterUK
Wed Nov 12 2014, 12:56 AM
@tmtm000.. have you been able to join ?
ExperimenterUK
Wed Nov 12 2014, 12:54 AM
@Alice..become a member,then send a PM to ajay_bhargav the site owner.
Tue Nov 11 2014, 03:58 AM
Abhishek Bansal
Thanks a lot for your informative tutorials!
Mon Nov 10 2014, 09:03 AM
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Sat Nov 08 2014, 11:58 AM
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ExperimenterUK Avatar
Posted By ExperimenterUK
Sat Nov 22 2014, 06:15 AM
@ExperimenterUKI make small table to observe Outpu...
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Posted By Max.otto
Fri Nov 21 2014, 02:31 PM
@ExperimeterUKForgot my last question.As i told be...
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Fri Nov 21 2014, 02:05 PM
@ExperimenterUKI make small table to observe Outpu...
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Posted By Max.otto
Fri Nov 21 2014, 01:12 PM
@ExperimenterUKThank u. I do it. Ohne Period it's ...
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Posted By ExperimenterUK
Thu Nov 20 2014, 05:56 PM
You set the on/off times here as 47%float PWMcom...
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Posted By vijay.parmar1992
Thu Nov 20 2014, 04:06 AM
Right now i am studying Bootloader.I want to writ...
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Posted By Max.otto
Wed Nov 19 2014, 03:11 PM
How can i get PWM on-off time..?pls check the atta...
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Wed Nov 19 2014, 03:05 PM
I am using PSoC 5LP.pls check the attached design ...
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Posted By ankitbajaj01
Wed Nov 19 2014, 01:49 PM
Thanks for the prompt response, I will try it out ...
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Posted By engr1931
Wed Nov 19 2014, 11:45 AM
this one sir! i attached the whole project! ...