hi every one i am strucked while thinking of this i am working on LPC2148 RTOS , i have to run 3 stepper motors X axix,y axis and Z axis and control their directions using using computer hyperterminal (i am planning to use hyperterminal as a KEYBOAD for controlling the stepper motor directions, to START and to STOP )... please can anyone tell me how to implement this using RTOS
Why do you have to - what or who is forcing you to do this?
"i am working on LPC2148 RTOS"
What do you mean by that: Are you developing an RTOS? Are you using an existing RTOS? IF it's an existing RTOS - what is it?
How far have you got with this "work"? Where, exactly, are you stuck?
"i have to (sic) run 3 stepper motors"
Doesn't really require an RTOS: http://www.keil.com/forum/19033/
Have you thought about how to control just one stepper motort? Controlling three is then just two more of the same!
Stepper motors are very widely-used and long-established devices - there's a vast wealth of books, sites, and training courses available to help you to use them. What research have you done to find stuff?
"i am planning to use hyperterminal as a KEYBOAD"
And have you thought about how you will achieve that?
i am using existing RTX kernal RTOS to run and control all 3 stepper motors please guide me how to go for this?
So you need the entire thing written for you? Do you manage to control a stepper without an operating system? Did you read RTX's user manual (I bet you did not)?
i read it... i need some suggestions/guidelines
I would start with one of the example programs provided along with your tool chain:
\Keil\ARM\RL\RTX\Examples
You didn't answer why you have to do this?
Since you don't seem to have the skills to either do it yourself, or even find out how to do it yourself, why are you having to do this? What is it that compels you?
Embedded software development is not for everyone - fair enough. If you're not interested in doing it yourself, then look for someone to do it for you - but don't expect them to do it for free! You could look here: http://www.keil.com/condb Or, as you have an NXP chip, here: ics.nxp.com/.../ Or sites like these: http://www.vworker.com/ http://www.zintro.com/home
Again, what work have you done yourself on this so far?
Have you found out the basics of how to drive just one stepper motor without an RTOS?
"i need some suggestions/guidelines"
OK, here is a suggestion: the first thing you need to do is to find out the basics of how to drive just one stepper motor without an RTOS