On Mon, Sep 24, 2018 at 2:22 PM Marco Liess <[email protected]> wrote: > > Hi Guys, > > my problem is that I need to "switch" between using the display cape and the > HDMI output of my BeagleBone Black Rev C. I can't always detach the Display > Cape when I want to use HDMI because I plan on fitting my BBB in a permanent > case. > Is there a possibility to use the HDMI output when the Display Cape is > attached to the Board? I can't seem to find an answer in any other questions > or forums so I would really appreciate some help. > > I'm currently using debian 9.5 with following kernel: 4.14.49-ti-r54 > I've tried editing the /boot/uEnv.txt file to disable loading the Cape, but > I've always come up with an error. > When I disable uboot_overlays and power up my BBB, the user LEDs start > blinking but after a few seconds only the heartbeat LED is on, while the > other LEDs are off permanently. On the screen I can only see the startup > "penguin icon" but it's like the BBB froze. > I've also tried uncommenting disable_uboot_overlay_addr0= and enabling > uboot_overlays but then the same thing happens to the LEDs while my monitor > doesn't even recognize a HDMI device. > > I am really stuck because I think it has to be possible to disable the > Display Cape but I can't figure out how. Thank you in advance.
Currently, there's no way to disable "it"... However you can "override it".... On startup, it'll pick addr0>3, this is eaiser to figure out if you plug in a serial adapter. One option is just to use: uboot_overlay_addr0=/lib/firmware/BB-SPIDEV0-00A0.dtbo uboot_overlay_addr1=/lib/firmware/BB-SPIDEV0-00A0.dtbo uboot_overlay_addr2=/lib/firmware/BB-SPIDEV0-00A0.dtbo uboot_overlay_addr3=/lib/firmware/BB-SPIDEV0-00A0.dtbo Then it definitely won't load the display cape. However this is definitely and odd one and one i didn't code for, so i'm not sure if the hdmi will actually come up either... Regards, -- Robert Nelson https://rcn-ee.com/ -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYgTgxfJRG0%2BRpks2%2B6sdG4rsPJ%3DuT9J0zsb2FLGS6BSUw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
