philip lutz DE2 uclinux nios2 project , lcd16207 display

Altera_Forum · ‎06-22-2010

Hi,

Somebody has run the philip lutz project ?

When the Makefile build de2_lcd16207 and button object modules there is some errors ( doc adjunt) ,

i need some configuration before compile these modules?

Thanks

Altera_Forum · ‎06-23-2010

Hi candido,

In de2_lcd_16207.c, u have to change the function cleanup_module() to


void cleanup_moduel()
{
                  unregister_chrdev(MAJOR_NUMBER, DEVICE_NAME);
}

And ignore the other components in that function.

Altera_Forum · ‎06-25-2010

Thanks

i have download lcd16702.c and lcd16702.h from nios2wiki and both installed in /linux2.6/drivers/char

i have edit lcd16702.c -> cleanup function

i have edit romfs-list

nod /dev/lcd16702 666 0 0 c 250 0

nod /dev/switches ......... and others philip lutz pio drivers

make menuconfig -> customize kernel ->platform -> DE2 altera

->drivers->char->lcd16702

->drivers-misc->philip-> leds ,switches, seg7

->customize application-> hush shell and busybox

make : no errors

make linux image : no errors

i have then download the image to nios2 soft

open nios2-terminal

> hush

# echo 255 > /dev/leds_red -> no problem -> 8 leds on

# echo 255 > /dev/leds_green -> no problem

# cat /dev/switches -> no problem

# echo AAAA > dev/seg7 -> no problem

# echo "hello" > /dev/lcd16207 ->FAILED: NOTHING OCURR-> lcd with default message: Wellcome to Altera Board

¿ Some trick? I have begin studyin linux drivers oreilly book.

I have tried too with default lcd16702 uclinux-dist drivers but there is no lcd16207.h headers file in /linux/

Thanks

>

Altera_Forum · ‎07-07-2010

hi Candido,

plz follow this instruction: http://alterauserforums.org/forum/showthread.php?p=72262

Altera_Forum · ‎07-13-2010

Thanks!

getting instrucction from nioswiki and that post about cache skip i have get run the lcd driver!

Cándido