Hi Geert, thanks for your help.
For now the LCD is mapped on the parallel port PP0/PP16. Yes, everytime i draw from userspace using "write" on /dev/fb i correctly see the image. Same if i "echo somegarbage > /dev/fb" i can see some pixel drawn correctly. The three functions in fb_opts are there, mapped and implemented. Still, nothing on the lcd on boot. If i "echo something > /dev/console" i see part of the first line of pixels cleared. This is my boot line CONFIG_BOOTPARAM_STRING="root=/dev/mtdblock3 rootfstype=romfs init=/bin/init video=amcorefb console=tty0" Some related configs # # Frame buffer hardware drivers # CONFIG_FB_AMCORE=y # # Graphics support # # CONFIG_VGASTATE is not set CONFIG_VIDEO_OUTPUT_CONTROL=y CONFIG_FB=y # CONFIG_FIRMWARE_EDID is not set # CONFIG_FB_DDC is not set # CONFIG_FB_BOOT_VESA_SUPPORT is not set # CONFIG_FB_CFB_FILLRECT is not set # CONFIG_FB_CFB_COPYAREA is not set # CONFIG_FB_CFB_IMAGEBLIT is not set # CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set CONFIG_FB_SYS_FILLRECT=y CONFIG_FB_SYS_COPYAREA=y CONFIG_FB_SYS_IMAGEBLIT=y # CONFIG_FB_FOREIGN_ENDIAN is not set # CONFIG_FB_SYS_FOPS is not set # CONFIG_FB_SVGALIB is not set # CONFIG_FB_MACMODES is not set # CONFIG_FB_BACKLIGHT is not set # CONFIG_FB_MODE_HELPERS is not set # CONFIG_FB_TILEBLITTING is not set # # Character devices # CONFIG_VT=y CONFIG_CONSOLE_TRANSLATIONS=y CONFIG_VT_CONSOLE=y CONFIG_HW_CONSOLE=y CONFIG_VT_HW_CONSOLE_BINDING=y # CONFIG_DEVKMEM is not set # CONFIG_SERIAL_NONSTANDARD is not set # CONFIG_N_GSM is not set While i work on it every help is appreciated. Many thanks angelo On 20/09/2012 21:19, Geert Uytterhoeven wrote: > Hi Angelo, > > On Mon, Sep 17, 2012 at 2:29 PM, angelo <angel...@gmail.com> wrote: >> i have a working coldfire board, running uClinux. I connected a 128x64 >> monochrome lcd on gpio, and written a framebuffer driver. > > On gpio, so it's not memory mapped? > >> From userspace i can now write on "/dev/fb0" and see some images properly. > > Good. > >> My question now is about console. Just for playing, i am trying to see the >> console output on the LCD. Even if very small, this should be possible, as i >> enabled the "console framebuffer" driver and some fonts. > > OK. > >> Once i booted linux, i try an echo "test" > /dev/console, something seems to >> happen on the screen, some pixels are cleared, but i don't see nothing >> similar to font chars. > > Strange. > >> I read fb and fbcon docs, but i couldn't find any document that explain if >> console fb driver (fbcon) can be used with some fb drivers only (like >> vesfb), or with any fb driver. So my question is: is it possible or i should >> add/create some additional driver ? > > The console should work, assumed you provided the proper drawing operations > in your struct fb_ops. E.g. for simple packed monochrome: > > .fb_fillrect = cfb_fillrect, > .fb_copyarea = cfb_copyarea, > .fb_imageblit = cfb_imageblit, > > Gr{oetje,eeting}s, > > Geert > > -- > Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- > ge...@linux-m68k.org > > In personal conversations with technical people, I call myself a hacker. But > when I'm talking to journalists I just say "programmer" or something like > that. > -- Linus Torvalds _______________________________________________ uClinux-dev mailing list uClinux-dev@uclinux.org http://mailman.uclinux.org/mailman/listinfo/uclinux-dev This message was resent by uclinux-dev@uclinux.org To unsubscribe see: http://mailman.uclinux.org/mailman/options/uclinux-dev