On Sun, Dec 28, 2014 at 1:10 PM, Victor Rodriguez <vm.rod25@xxxxxxxxx> wrote: > HI > > There is a good ( although really old ) explanation about this here: > > http://www.tldp.org/LDP/lkmpg/2.6/html/ > http://www.tldp.org/LDP/lkmpg/2.6/html/x569.html > > Please , just take it as a good ( and really old ) document to read > and understand more about the questions you have. Things on the kernel > have change a lot ( it was written in 2.6 ) > > In general you can try to make the experiment of turn on and off a led > ( easier than the monitor ) > > Hope it helps ( at least this web page it was really helpful for me in > the beginign ) > > P.D. do not expect that the source code compile without modifications > in the current kernel :) > > Regards > > Victor Rodriguez > > > > On Sun, Dec 28, 2014 at 12:39 PM, me storage <me.storage126@xxxxxxxxx> wrote: >> Hi All, >> >> I am following LDD3 for Char Drivers. So we writing a kernel module(char >> driver) after that creating a char file which is representation of Character >> Device. So my doubt is how we will communicate with real hardware device let >> suppose how to communicate with our monitor . >> Can any one please explain how we will communicate with real hardware for >> read/write calls? >> And what is mknod is doing internally when we are creating char/block >> devices? >> >> Thanks in Advance >> >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies@xxxxxxxxxxxxxxxxx >> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >> Hi Due to the fact that I have found that many people ( including me at the beginning ) is looking for simple and really short example code. I decided (since your last mail, sorry I had free time :) ) to do a compilation of basic modules examples(nothing big and still on progress ). They are on my git hub repository: https://github.com/VictorRodriguez/linux_device_drivers_tutorial You can download them with: https://github.com/VictorRodriguez/linux_device_drivers_tutorial.git There is a short README ( hope it helps ) Inside the repository there is a led.c file that you will find helpful , It was tested on an old ARM platform. However it will work on any other embedded platform . I will test it on a minnow max (http://www.minnowboard.org/meet-minnowboard-max/) The basic idea is the same, the key is to have the GPIO number :) BTW. on the same git hub you will find another Linux projects under construction ( HAL and PnP analysis ) If you have any question or feedback please do not hesitate to tell me Regards Victor Rodriguez _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
