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how to generate pwm using timer in pic 18f4550?
thanks

You are still ignoring lots of things you have been told. I'll put some comments in part of your code, _read them_:

{
int j;
int i=0;

for(i=0;i<(rev*360/1.8);i++){ ...

You are still ignoring lots of things you have been told. I'll put some comments in part of your code, _read them_:

{
int j;
int i=0;

for(i=0;i<(rev*360/1.8);i++){ ...

You're still making it difficult to help. So I'll use another tack.

Try this code and tell us what happens as you change the value for "t".#include <18F6723.h>
#fuses HS,NOLVP,N ...

You're still making it difficult to help. So I'll use another tack.

Try this code and tell us what happens as you change the value for "t".#include <18F6723.h>
#fuses HS,NOLVP,N ...

this...
int16 table

#include <18f6723.h>
#fuses HS,NOLVP,NOWDT,NOPROTECT
#use delay(clock=20M)

//int16 table[4]={3,6,12,9};
int8 ax[4]={9 ...

Your code is neither complete nor compilable.

You do not have a main().
Follow the instructions/advice given in previous threads.
Read the forum guidelines.

Mike

#include <18f6723.h> ...

I use bipolar stepper motors and save a lot of headaches by using driver boards such as you can get from Sparkfun and Pololu. These usually accept three inputs such as Enable, Step and Direction. A ty ...

ckielstra told you not to use 'short' in this post:
http://www.ccsinfo.com/forum/viewtopic.php?t=53579&start=4

But you are still doing it here:

void s1(unsigned short rev)
{
int16 j; ...

ckielstra told you not to use 'short' in this post:
http://www.ccsinfo.com/forum/viewtopic.php?t=53579&start=4

But you are still doing it here:

void s1(unsigned short rev)
{
int16 j; ...

#include <18f6723.h>
#fuses HS,NOLVP,NOWDT,NOPROTECT
#use delay(clock=20M)

//int16 table[4]={3,6,12,9};
int8 ax[4]={9,12,6,3};

void s1& ...

stepping motor drive ?
3,6,12,9 for ever......
rotates 2 bits
ad nauesum

Jay

yes

You need to put your PortB values in an array. Then use a for loop to
read the values from the array. Similar to the code shown in the
first example here:
http://stackoverflow.com/questions/13466 ...

Please mods ban this numpty

english please

how to merge these lines into a for loop???

void s1( )
{
output_b(3);
delay_ms(50);
output_b(6);
delay_ms(50);
output_b(12);
delay_ms( ...