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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