From: "maxime.ripard@free-electrons.com" <maxime.ripard@free-electrons.com>
To: linux-fbdev@vger.kernel.org
Subject: Re: SSD1306 OLED driver
Date: Fri, 09 Jan 2015 11:03:57 +0000 [thread overview]
Message-ID: <20150109110357.GA26781@lukather> (raw)
In-Reply-To: <BAY176-W246A4D5C3A23D1928FC5D3D38C0@phx.gbl>
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On Fri, Jan 09, 2015 at 03:45:01PM +0530, Ssagarr Patil wrote:
>
> Hi Maxime,
>
> >>> Thanks for the pointer, I am using spi_write() call and I see /dev/fb0 node created.
> >>> but when I do echo "1121"> /dev/fb0 nothing comes up on oled any pointers on this ?
> >>
> >> You can't use it like that. It's a standard framebuffer, that is
> >> represented as an array of pixels, so you need to use a font rendering
> >> software if you want to output some text.
> >>
> > can fbtest
> > (https://git.kernel.org/cgit/linux/kernel/git/geert/fbtest.git/)
> > be used to to draw something ?
> >
> how do I set pixels of it ? Please if you can point me to some stuff that would be helpful.
Last time I tried, fbtest didn't support monochrome display.
And you'll find anything you need in the documentation.
https://www.kernel.org/doc/Documentation/fb/framebuffer.txt
>
> Thanks And Regards,
> Sagar
>
>
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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next prev parent reply other threads:[~2015-01-09 11:03 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-14 11:51 SSD1306 OLED driver Ssagarr Patil
2014-11-16 9:50 ` maxime.ripard
2014-11-18 14:59 ` Ssagarr Patil
2014-11-18 15:20 ` maxime.ripard
2015-01-05 11:15 ` Ssagarr Patil
2015-01-05 13:47 ` maxime.ripard
2015-01-06 13:12 ` Ssagarr Patil
2015-01-08 9:33 ` maxime.ripard
2015-01-08 18:26 ` Ssagarr Patil
2015-01-09 10:27 ` Ssagarr Patil
2015-01-09 11:03 ` maxime.ripard [this message]
2015-01-09 12:55 ` Ssagarr Patil
2015-01-09 13:58 ` Geert Uytterhoeven
2015-01-09 22:23 ` maxime.ripard
2015-01-09 22:31 ` maxime.ripard
2015-01-10 0:03 ` Noralf Tronnes
2015-01-10 12:46 ` Ssagarr Patil
2015-01-10 13:50 ` Noralf Tronnes
2015-01-10 21:19 ` Ssagarr Patil
2015-01-11 14:20 ` Noralf Tronnes
2015-01-12 9:56 ` Ssagarr Patil
2015-01-12 14:30 ` Noralf Tronnes
2015-01-13 13:45 ` Ssagarr Patil
2015-01-14 13:51 ` Ssagarr Patil
2015-01-14 15:27 ` Geert Uytterhoeven
2015-01-14 16:17 ` Ssagarr Patil
2015-01-14 16:38 ` Ssagarr Patil
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