On Tue, 14 Jan 2020 12:52:01 -0800, Zeph writes: >i need to reconfigure the pins that are not by default gpio. For example >P8_46 pin which is by default an LCD_Data pin.
by default the lcd pins are assigned to/used by the hdmi framer, as per the system reference manual. >When using the BBB with a debian stretch image I can use those pins as >gpio. However, when I use my ubuntu distro, those pins will not work as >gpio. When I try and reconfigure the pins using the config-pin utility I >get this error: > >P8_46 pinmux file not found! to make these pins available for other purposes you'll need to disable hdmi, using "disable_uboot_overlay_video=1" in uEnv.txt. see for example: https://github.com/beagleboard/linux/issues/139 and not quite as directly related: https://github.com/beagleboard/bb.org-overlays/issues/76 >This slots file doesn't exist and so I can never proceed. the slots stuff is long gone, you need to convince your uboot (via uEnv.txt) to load the relevant overlays. see https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays for a little bit of explanation. >Note: I need to be running the ubuntu distro. you may have to update your uboot version to make the u-boot overlay stuff work properly, but otherwise there shouldn't be any big differences between ubuntu and debian that are relevant for your specific situation. -- Best Regards, Alexander Zangerl IT Engineer BREATHE-SAFE intelligent cabin air filtration Keeps your lungs and cabin dust free! 290 Beatty Road, Archerfield QLD 4108 Australia, Tel: +61 7 3276 7833 M. +61 415 482 341 E. [email protected] -- 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/18998-1579040619.297300%40q8MY.H2CA.A3dK.
