How to write a keyboard driver with interrupt driven? the platform is ARM and the interface is SRAMC with I/O mapped. What should my handler and read fucntions contains? and I want to know how to map the memory by using the ioremap() function? when exactly we have to use mmap()can you please help me out with some kinda psuedo code.
warm regards,
Ravi Kulkarni
Hi,
i'm using a debian-4.0r1 on an old subnet machine.
I have to extend it with an other keyboard .
What i have is a DVD of etch 4.0r7.
How can i install and load the keyboard-driver for the us-keyboard?
Can anybody please give me a hint how to do that?
Thanks in advance (0 Replies)
I'm a beginner to the Linux programming and trying my hands on some device driver examples while practising. The below code (a trimmed down version of tiny_tty.c from ldd3 book) loads perfectly using insmod and I'm able to see it in /proc/tty/drivers , /proc/modules and device nodes are getting... (1 Reply)
Hi, I've got a bit of a ridiculous problem and wasn't sure where to post it.
I need to use the vertical bar for piping in Bash but, as per the title, am using a UK layout on a US (physical) keyboard which doesn't have a key for it in the place I'd expect. I've tried using xbindkeys and Unicode... (7 Replies)
(USING FEDORA 16)
I am using following command:
cat `pwd`/pci-0000:00:1d.0-usb-0:1.3:1.0-event-kbd
to access the keyboard driver to make a key logger ,but what i am getting is just some hash code ,please help me decrypt it.
Thanks. (1 Reply)
Hi there,
I am trying to understand the logic of the Linux keyboard driver, I am not sure if this is the right place to ask, but I don't know where else I could.
Btw. I am talking about an unicode console here.
1.) The Linux kernel (currently) can take 256 translation tables (keymaps),... (2 Replies)
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poll_keyboard(3alleg4) Allegro manual poll_keyboard(3alleg4)NAME
poll_keyboard - Polls the keyboard. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int poll_keyboard();
DESCRIPTION
Wherever possible, Allegro will read the keyboard input asynchronously (ie. from inside an interrupt handler), but on some platforms that
may not be possible, in which case you must call this routine at regular intervals to update the keyboard state variables.
To help you test your keyboard polling code even if you are programming on a platform that doesn't require it, after the first time that
you call this function Allegro will switch into polling mode, so from that point onwards you will have to call this routine in order to get
any keyboard input at all, regardless of whether the current driver actually needs to be polled or not.
The keypressed(), readkey(), and ureadkey() functions call poll_keyboard() automatically, so you only need to use this function when
accessing the key[] array and key_shifts variable.
RETURN VALUE
Returns zero on success, or a negative number on failure (ie. no keyboard driver installed).
SEE ALSO keyboard_needs_poll(3alleg4), install_keyboard(3alleg4), key(3alleg4), key_shifts(3alleg4), excamera(3alleg4), exsample(3alleg4), exs-
tars(3alleg4)Allegro version 4.4.2 poll_keyboard(3alleg4)