Re: [Gumstix-users] SONY LCD S/D enable?

[John A. <jal...@sp...>]

I looked for that tar.gz as well and never found it.  If you do an =
archive
search on the mailing list you'll find the old info.  I don't know what
happened to the wiki.  Here's a wiring diagram that I put together in =
excel
which includes a TPS7101 regulator for the LCD Vcc1/Vcc2.  Hope this =
helps.

John Alfredo

-----Original Message-----
From: gum...@li...
[mailto:gum...@li...] On Behalf Of =
Beno=EEt
VAUTRIN
Sent: Thursday, September 28, 2006 10:01 AM
To: General mailing list for gumstix users.
Subject: Re: [Gumstix-users] SONY LCD S/D enable?

Hi !

I've bought the same LCD and can't find the tar.gz of the Display page =
of
the=20
wiki ! Do you have it or could you tell mr how you wired it ?

Thanks

Ben.

Le Jeudi 28 Septembre 2006 19:15, John Alfredo a =E9crit=A0:
> Well I finally got my LCD wired up to the breakout-gs and am using =
GPIO47
> for the S/D enable.  I have an init.d script to set all the registers =
and
> issue a "set" to GPIO47, and I can see noise on the screen when I cat =
file
> > /dev/fb0.
>
> /bin/echo "GPIO out" > /proc/gpio/GPIO47
> /bin/echo "set" > /proc/gpio/GPIO47
>
> My question is: according to what I've seen on the wiki, people say =
they
> can see boot messages and/or the penguin on boot up.  I set bootargs
> according to the wiki:
>
> setenv bootargs console=3Dtty0,console=3DttyS0,115200n8 root=3D1f01
> rootfstype=3Djffs2 reboot=3Dcold,hard
>
video=3Dpxafb:mode:240x160-16,active,hsynclen:7,right:16,left:5,upper:19,=
vsyn
>c len:2,hsync:1,vsync:1,pixclockpol:0,pixclock:306748
>
> however, since GPIO47 is not set until the init.d script runs, the =
screen
> is not enabled until later in the boot process.  Using the bootargs =
above,
> normal boot messages do not show up on the serial console, ttyS0.  =
Other
> people are using various pins (16, 81, etc) for S/D, however how and =
when
> do you enable that pin?  Is it possible to assert the pin from uboot?
>
> Also, is there a program/API that can be used to display text/graphics
> directly to /dev/fb0, i.e. without an X server?  How does the penguin =
show
> up without an X server?
>
> Thanks in advance,
>
> John Alfredo
>
>
> =
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