Chuck W5UXH 
I have been working with a USB keyboard connected to the Mini2440. I thought I needed to handle the /dev/input/event1 (the USB keyboard device) input data myself and encode the key codes into ASCII and had made reasonable progress doing this using stdout to display the resulting ASCII characters in a terminal emulator. I then started trying to write the characters to the LCD framebuffer and found that there clearly is a driver somewhere handling the USB keyboard input and displaying the characters on the LCD display. I need some pointers to help me figure out how to access the input characters myself and to control how (and if) they are displayed on the LCD panel. I need to be able to implement a small scrolling section on the LCD instead of just allowing the existing sequence where I have no control over the display. I will paste the source for the test program at the end. The program opens /dev/tty0 (which seems to be the LCD framebuffer and possibly somehow is also the USB keyboard input?). The program then displays a one line "prompt" and goes into an infinite loop doing nothing at all. While running in this loop, any characters typed on the keys are displayed on the LCD. Backspace works normally and the display scrolls normally. I also uploaded a youtube "demo" that shows the behaviour as characters are typed on the USB keyboard and magically appear on the LCD display. Not that informative, and the loud key clicks as I type are distracting. There are a few typos in the video. I could not see the LCD display while typing. I welcome any pointers to what is going on here since I have no clue how to prevent this "automatic" sequence where any key press is passed to the LCD. I need to be able to "intercept" the key presses and control the LCD myself. My test program is based on examples from the ELLK Users Manual (Intellimetrix, Doug Abbott), without which I would never have gotten even this far in learning to work with the Mini2440. Thanks, Chuck Las Cruces, NM http://www.youtube.com/watch?v=PYvgzQgeUl8 #include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <string.h> int fd, fback; char text[80]; int main (int argc, char *argv[]) { static const char onoff[] = {'0', '1'}; // LCD_init(); fback = open ("/dev/backlight", O_RDWR | O_SYNC); fd = open ("/dev/tty0", O_RDWR | O_SYNC); // LCD_erase (LCD_SCREEN); write (fd, "\x1b[2J", 4); // LCD_backlight (1); write (fback, &onoff[1], 1); // LCD_set_cursor (1,1); sprintf (text, "\x1b[%d;%dH", 1, 1); write (fd, text, strlen (text)); // Display welcome text on LCD sprintf (text, "%s\n", "Type on the USB keyboard:"); write (fd, text, strlen (text)); while (1) {}; exit(0); }