Robert, For the PocketBeagle, it seems a FTDI Click Board is recommended way to connect to the serial output of the PB:
https://media.digikey.com/pdf/Data%20Sheets/GHI%20Electronics%20PDFs/PocketBeagleSystemRefManual_Web.pdf See Jason's suggestion from this link: https://github.com/beagleboard/pocketbeagle/issues/3 Is there anything else connected to the PB when trying to communicate with it via serial? Is so, then you might try to disconnect it before reading from the serial interface. Cheers, Jon On Sat, Dec 19, 2020 at 2:17 AM robert.berger <[email protected]> wrote: > Hi, > > I tried in a couple of ways to get something out of the serial console > while booting (U-Boot, kernel, console,..) > > This seems extremely unstable and random. > > One device I tried is this[1] with 3.3V. > > Another device is this[2]. > > Can you please advise which serial adapter to use? > > Regards, > > Robert > > [1] > https://www.amazon.co.uk/dp/B07BBPX8B8/ref=sspa_dk_detail_1?psc=1&pd_rd_i=B07BBPX8B8&pd_rd_w=bMrBp&pf_rd_p=1055d8b2-c10c-4d7d-b50d-96300553e15d&pd_rd_wg=x9xga&pf_rd_r=4CE6P3A41TY2T1YEWT9D&pd_rd_r=8d2c3d2f-1616-48b7-909a230a9812d43d&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzSko1VE9HOTZUUklQJmVuY3J5cHRlZElkPUEwODg0NTU5MTdWWENKTDRESDE1MiZlbmNyeXB0ZWRBZElkPUEwNTYxNzYwMkRDUlBZRUk4TzJKMCZ3aWRnZXROYW1lPXNwX2RldGFpbCZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU= > > [2] https://www.artekit.eu/products/accessories/comm/ak-rs232/ > > -- > 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/f506dc0b-7f25-4354-bbb3-ec8f0057f266o%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/f506dc0b-7f25-4354-bbb3-ec8f0057f266o%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CAG99bkoEBucQj%3DWW2cfkQQt58tVGkE2TKKtMAk2qa--e-9Z56A%40mail.gmail.com.
