Higher color output through the HDMI connector uses up pins? On Tuesday, November 12, 2013 12:14:46 PM UTC-5, Gerald wrote: > > We did this for a reason. Our focus was expansion and due to the pin > muxing, the extra 8 bits would wipe out a lot of functionality. Se we > decided to make those easily accessible when connected to a monitor. > > Gerald > > > On Tue, Nov 12, 2013 at 10:27 AM, <[email protected] <javascript:>> wrote: > >> Thanks Gerald, >> >> I will have to confirm this by wiring up another LCD panel to the >> expansion headers. It's unfortunate to learn that there is a 16-bit color >> limitation via HDMI output. On the Raspberry Pi I can issue the "fbset >> -depth 24" bash command and the HDMI output switches to 24-bit color depth. >> When I try that command on the BBB it returns with the error "ioctl >> FBIOPUT_VSCREENINFO: Invalid argument". Only 8 and 16 work as valid bit >> depths with the BBB. >> >> >> On Tuesday, November 12, 2013 9:41:30 AM UTC-5, Gerald wrote: >> >>> All 24 bits are available on the expansion headers. I cannot speak for >>> 4D systems as to how their board is designed and if they support 24b mode >>> or not. >>> >>> HDMI only has 16 bits connected, so you cannot get 24b color on it. >>> >>> Gerald >>> >>> >>> >>> On Tue, Nov 12, 2013 at 8:37 AM, <[email protected]> wrote: >>> >>>> I'd like to refine my question to you Gerald... >>>> >>>> How can I get 24-bit color with the BBB via either HDMI or LCD >>>> (assuming the LCD I wire up is a 24/32-bit color panel)? I thought the TI >>>> spec indicated the BBB could drive true-color but all I can manage to get >>>> out of the BBB is 16-bit color regardless if I use HDMI or the LCD from 4D >>>> Systems. >>>> >>>> >>>> On Monday, November 11, 2013 2:26:02 PM UTC-5, [email protected] wrote: >>>>> >>>>> Great, now how does one specify a particular resolution and audio >>>>> option upon startup? >>>>> >>>>> On Saturday, November 2, 2013 4:32:32 PM UTC-4, Gerald wrote: >>>>>> >>>>>> 1920x1080@24HZ is the best it can do. >>>>>> >>>>>> Gerald >>>>>> >>>>>> >>>>>> >>>>>> On Sat, Nov 2, 2013 at 1:19 PM, <[email protected]> wrote: >>>>>> >>>>>>> Per above, it seemed that 1920x1080 was possible in the 50-60Hz >>>>>>> range without audio. Has the community been able to figure out a way >>>>>>> to >>>>>>> get that to work? >>>>>>> Thanks! >>>>>>> >>>>>>> >>>>>>> On Friday, November 1, 2013 3:24:35 AM UTC-4, [email protected]: >>>>>>>> >>>>>>>> People, read your docs… According to the latest System Reference >>>>>>>> Manual, BBB added support for 1920x1080@24Hz resolution: >>>>>>>> https://github.com/CircuitCo/BeagleBone-Black/tr >>>>>>>> ee/master/BBB_SRM.pdf<https://www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&cad=rja&ved=0CFwQFjAD&url=https%3A%2F%2Fgithub.com%2FCircuitCo%2FBeagleBone-Black%2Fblob%2Fmaster%2FBBB_SRM.pdf%3Fraw%3Dtrue&ei=NVVzUrLINaO62AWi9oCgBA&usg=AFQjCNGHgKSW6eN6wCnTOUguqfvWLjtP8Q&sig2=b12eANaFMCe-U0hiVGZLpw&bvm=bv.55819444,d.b2I> >>>>>>>> >>>>>>>> >>>>>>>> 6.10 HDMI Interface >>>>>>>> >>>>>>>> The BeagleBone Black has an onboard HDMI framer that converts the >>>>>>>> LCD signals and audio signals to drive a HDMI monitor. The design uses >>>>>>>> an >>>>>>>> NXP TDA19988 HDMI Framer. >>>>>>>> >>>>>>>> The following sections provide more detail into the design of this >>>>>>>> interface. >>>>>>>> >>>>>>>> 6.10.1 Supported Resolutions >>>>>>>> >>>>>>>> The maximum resolution supported by the BeagleBone Black is >>>>>>>> 1280x1024 @ 60Hz. Table 9 below shows the supported resolutions. >>>>>>>> Not all resolutions may work on all monitors, but these have been >>>>>>>> tested >>>>>>>> and shown to work on at least one monitor. EDID is supported on the >>>>>>>> BeagleBone Black. Based on the EDID reading from the connected >>>>>>>> monitor, the >>>>>>>> highest compatible resolution is selected. >>>>>>>> >>>>>>>> Table 9. HDMI Supported Monitor Resolutions >>>>>>>> [image: page71image9400] [image: page71image9824] [image: >>>>>>>> page71image10248] [image: page71image11640] >>>>>>>> >>>>>>>> RESOLUTION >>>>>>>> [image: page71image12800] [image: page71image13416] [image: >>>>>>>> page71image13576] >>>>>>>> >>>>>>>> AUDIO >>>>>>>> [image: page71image14600] [image: page71image14760] [image: >>>>>>>> page71image15352] [image: page71image15920] [image: >>>>>>>> page71image16344] >>>>>>>> >>>>>>>> 800 x 600 @60Hz >>>>>>>> >>>>>>>> 800 x 600 @56Hz >>>>>>>> [image: page71image20208] >>>>>>>> >>>>>>>> 640 x 480 @75Hz >>>>>>>> [image: page71image23392] [image: page71image24296] >>>>>>>> >>>>>>>> 640 x 480 @60Hz >>>>>>>> >>>>>>>> YES >>>>>>>> >>>>>>>> 720 x 400 @70Hz >>>>>>>> [image: page71image29160] >>>>>>>> >>>>>>>> 1280 x 1024 @75Hz >>>>>>>> [image: page71image32416] [image: page71image33184] >>>>>>>> >>>>>>>> 1024 x 768 @75Hz >>>>>>>> [image: page71image35248] [image: page71image36016] >>>>>>>> >>>>>>>> 1024 x 768 @70Hz >>>>>>>> [image: page71image38080] [image: page71image38848] >>>>>>>> >>>>>>>> 1024 x 768 @60Hz >>>>>>>> [image: page71image41264] [image: page71image41744] [image: >>>>>>>> page71image42632] >>>>>>>> >>>>>>>> 800 x 600 @75Hz >>>>>>>> [image: page71image44912] >>>>>>>> >>>>>>>> 800 x 600 @72Hz >>>>>>>> >>>>>>>> 720 x 480 @60Hz >>>>>>>> >>>>>>>> YES >>>>>>>> >>>>>>>> 1280 x 720 @60Hz >>>>>>>> >>>>>>>> YES >>>>>>>> [image: page71image53920] >>>>>>>> >>>>>>>> 1920x1080@24Hz >>>>>>>> >>>>>>>> YES >>>>>>>> [image: page71image57840] [image: page71image58304] [image: >>>>>>>> page71image58784] >>>>>>>> >>>>>>>> *NOTE: The updated software image used on the Rev A5B board added >>>>>>>> support for 1920x1080@24HZ.* >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> On Wednesday, 8 May 2013 03:05:24 UTC-7, [email protected]: >>>>>>>>> >>>>>>>>> The Beagle Board Black system reference manual rev A5.2 says (in >>>>>>>>> the HDMI section): >>>>>>>>> >>>>>>>>> Currently the following resolutions are supported via the >>>>>>>>> software: >>>>>>>>> 1280 x 1024 >>>>>>>>> 1440 x 900 >>>>>>>>> 1024 x 768 >>>>>>>>> 1280 x 720 >>>>>>>>> >>>>>>>>> This is a bit disappointing because we don't have 1920 x 1080... >>>>>>>>> arguable "full HD". I believe the current Raspberry Pie has more than >>>>>>>>> 1920 >>>>>>>>> x 1080. >>>>>>>>> Is this limit imposed by the hardware of the software? Are we >>>>>>>>> expecting higher resolutions in future software releases? >>>>>>>>> >>>>>>>>> Thnaks >>>>>>>>> >>>>>>>>> Richard. >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>> For more options, visit http://beagleboard.org/discuss >>>>>>> --- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "BeagleBoard" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to [email protected]. >>>>>>> For more options, visit https://groups.google.com/groups/opt_out. >>>>>>> >>>>>> >>>>>> -- >>>> For more options, visit http://beagleboard.org/discuss >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "BeagleBoard" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> For more options, visit https://groups.google.com/groups/opt_out. >>>> >>> >>> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/groups/opt_out. >> > >
-- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
