Problem : SDL porting to Embedded System (Intel StrongARM-1110 Ev. Board Framebuffer)

SDL Development
#1

Hello all !

I’m trying to port SDL to an embedded system as a graphic user interface of
visual-centric applications. (using only framebuffer console driver)
I’m using Intel’s SA1110 evaluation board as a reference platform.
It has 320x240x16 bpp LCD display and touch panel with their device drivers
(framebuffer, touch screen drivers) already working.
When I configured SDL and cross-compiled it in the x86 machine, I got libs.
and test programs.
But the test programs (graywin, testbitmap) die saying “Couldn’t set
320x240x2 video mode :” (I modified 640x480 setting to 320x240).

How can I solve this problem ?

Is this related to vesa~~ things ?
Because I’m a newbie to framebuffer stuffs, I can’t figure out how to handle
this.
I tried modifying few lines of src/video/fbcon/SDL_fbvideo.c couple of times
but only to fail.

version : SDL-1.1.7

configuration :
(CC=arm-linux-gcc
./configure --enable-shared --disable-static --enable-debug --disable-joysti
ck --disable-cdrom --disable-alsa --disable-esd --disable-arts --disable-nas
m --disable-video-x11 --without-x --disable-video-x11-vm --disable-xfree86-g
lidehack --disable-video-x11-dgamouse --disable-video-x11-xv --disable-video
-photon --disable-video-dga --enable-video-fbcon --disable-video-ggi --disab
le-video-svga --disable-video-aalib --disable-video-opengl)

Any suggestion would be appreciated.

Thanks in advance.

Jangwon Boo,
(@Jangwon_Boo)

Digital Media Research Lab.
LG Electronics, Inc.

#2

But the test programs (graywin, testbitmap) die saying “Couldn’t set
320x240x2 video mode :” (I modified 640x480 setting to 320x240).

you’re on unchartered territory. see if you can find out the reason
for this yourself (use a debugger and trace through the library calls,
or insert printfs or whatever). Note that the bpp argument to
SDL_SetVideoMode() is in bits, not bytes

#3

Hello all !

I’m trying to port SDL to an embedded system as a graphic user interface of
visual-centric applications. (using only framebuffer console driver)
I’m using Intel’s SA1110 evaluation board as a reference platform.
It has 320x240x16 bpp LCD display and touch panel with their device drivers
(framebuffer, touch screen drivers) already working.
When I configured SDL and cross-compiled it in the x86 machine, I got libs.
and test programs.
But the test programs (graywin, testbitmap) die saying “Couldn’t set
320x240x2 video mode :” (I modified 640x480 setting to 320x240).

You should be using 320x200x16, instead of 320x200x2, which requests
a 2 bits-per-pixel display - not supported by SDL at the moment.

See ya!
-Sam Lantinga, Lead Programmer, Loki Entertainment Software

#4

But the test programs (graywin, testbitmap) die saying “Couldn’t set
320x240x2 video mode :” (I modified 640x480 setting to 320x240).

You should be using 320x200x16, instead of 320x200x2, which requests
a 2 bits-per-pixel display - not supported by SDL at the moment.

Sounds like he was thinking 2 bytes, versus 16 bits. :wink:

-bill!