Step motor in mini 2440

Did anybody have any experience with step motors connected to the Mini 2440
?

You can send data to the stepper motor controller via the serial port.  The
easiest way is to get an adapter for the ttySAC1 port and use that port. 
Under the FriendlyARM tab there is an app called "Serial Port Assistant". 
You can use that utility to write to the serial ports.  It will not work
with ttySAC0 (the default port) unless you can figure out how to turn off
the debug console first.

james h

You can use I2C interface to play with motors, relays.

I design a relay board (1 relay) that connects to one of the GPIO port. Can
I use it to driver the step motor ?

Probably not directly, you have to use a transistor or any gateway. How you
use the GPIO? Using linux with precompiled Kernel? Because my original
Kernel has no GPIO support which is rubbish.

I didn´t interfae the relay board to the mini 2440 yet but I did it with
tne ATSAM7256 and works fine. The relay board has an Input AC onnector annd
an outupt AC connector connected by a relay. Whatever i write 1 to the GPIO
the relay lets the pwoer floes frm input to the outupu ac. When I write 0
to the PIO it cuts the power. I mainly use it to open/close a turntile for
access control

Has anybody a sample code for driving a stepper motor using one of the GPIO
ports at mini2440?