A good entry point on this would be : http://www.xml.com/ldd/chapter/book/ch06.html regards, christophe Geert Fannes (geert.fannes@esat.kuleuven.ac.be) wrote: > hello, > > i'm building a robot with two stepper motors controlled by the parallel > port. i am trying to write a device driver for doing this. this driver > consists of a bottom half that gets called by the 100Hz clock (tq_timer) > and changes the state of the stepper by "outb"-ing some value to the > parallel port adress. the top half of the driver gets some coordinate > information and converts these to values that should be send to the > parallel port byt he bottom half. all very nice in theory, but i don't > get the tq_timer to work (i started to try to write something using > printk each time the bottom half is called, but nothing happens). > > therefor my question is:: is there someone who has (or can construct) a > small WORKING example of using tq_timer for the 2.4 kernel series? just > some code that registers a module and puts a function to tq_timer that > writes something out or so. > > thnx, > geert. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/