On Sat, Jun 18, 2022 at 11:30:53AM -0500, Steve Fatula wrote: > So, it sounds like the answer is no basically. Yes, I can compile debian and > such but not what I have in mind, simply wanted to enable the UART for > serial use. I'm not sure why the overlays are not included in Debian. I'll > have to keep the event driven code controlling my projector on another > machine for now sadly. I guess I will try and find a way to ask the debian > "developers" who made the images for Debian. Thanks for the help. >
The "developers" who made the image for Debian: fundamentally Gunnar Wolf who is an excellent Debian developer - expert and of very long standing - who has done a large amount of work. You might find others who could help on IRC - OFTC channels #debian-arm and #debian-raspberrypi The Raspberry Pi does things its own way and the way the overlays work is largely particular to the RPi. With every good wish, as ever, Andy Cater > On 6/18/22 2:38 AM, Francois Lorrain wrote: > > Hello, > > > > This might be useful if you want to recreate the dts : > > https://bootlin.com/blog/device-tree-supporting-similar-boards-the-beaglebone-example/ > > > > I have not tried it ... > > > > Francois > > > > On Sat, 18 Jun 2022 at 06:20, Steve Fatula <st...@fatula.us> wrote: > > > > There are no dtoverlays using Debian, they are on Raspberry OS. > > > > On 6/17/22 7:34 PM, Lennart Sorensen wrote: > > > On Fri, Jun 17, 2022 at 06:45:02PM -0500, Steve Fatula wrote: > > >> Is there anyway to get an attached serial port working on > > Debian and > > >> raspberry PI 4? It appears the tested installs want to use it > > as a serial > > >> console, I do not. I want to use UART1, the PL011, as an RS232 > > port to a > > >> projector. > > >> > > >> I can do this using Raspberry OS, but, not Debian using the > > tested installs. > > >> There is no way to disable Bluetooth via the overlays used on > > Raspberry OS. > > >> I can sort of mess around and stop the console from being > > started on ttyS1, > > >> but no way to use the port as a serial port to send and > > received data. > > >> Apparently the dtoverlays are not there. > > >> > > >> So, is there any way to really use a serial port, attached to > > any GPIO pins, > > >> as a real RS232 port using Debian images? if so, what do I need > > to disable > > >> or enable? > > >> > > >> As mentioned, had it working on Raspberry OS which is based on > > Bullseye. But > > >> unfortunately I can't use Raspberry OS for our usage. > > > From what I have read you should be able to enable uart2 > > through uart5 > > > on the Pi4B using the dts overlays. I don't have a Pi4 yet so no > > > experience with doing that unfortunately. > > > > > > https://forums.raspberrypi.com/viewtopic.php?t=244827 seems to > > have some > > > talk about it though. > > > > >
