Yes, looking at the board schematic, in order to use LCD_DATA16 - 23 (missing 8 bits) you would have to give up 6 GPIO's and 2 PWM's.
On Tue, Nov 12, 2013 at 3:03 PM, <d...@donduper.com> wrote: > 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, <d...@donduper.com> 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, <d...@donduper.com> 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, d...@donduper.comwrote: >>>>>> >>>>>> 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, <sri...@gmail.com> 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, draw...@gmail.comwrote: >>>>>>>>> >>>>>>>>> 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, ric...@aardvark.com.auwrote: >>>>>>>>>> >>>>>>>>>> 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 beagleboard...@googlegroups.com. >>>>>>>> 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 beagleboard...@googlegroups.com. >>>>> 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 beagleboard...@googlegroups.com. >>> 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 beagleboard+unsubscr...@googlegroups.com. > 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 beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
