On Sat, 19 Dec 2020 02:16:56 -0800 (PST), in
gmane.comp.hardware.beagleboard.user "robert.berger"
<[email protected]> wrote:
There is a distinct lack of information in this post.
>Hi,
>
>I tried in a couple of ways to get something out of the serial console
>while booting (U-Boot, kernel, console,..)
>
Which Beagle are you using?
>This seems extremely unstable and random.
What results have you obtained that cause you to make that statement.
Presuming you are wired properly to the board, and configured the USB side
for the serial bit rate*, anything the board sends on the UART should be
available via the virtual serial port on the USB side.
>
>One device I tried is this[1] with 3.3V.
>
>Another device is this[2].
>
>Can you please advise which serial adapter to use?
>
Given how most computers have been dropping RS-232 connections, #2
seems to be an exercise in futility -- You have a 3.3V TTL UART being
converted to full 9-pin RS-232, only to then need an RS-232 to USB adapter
to connect to modern computers.
* The USB protocol itself does not care about bit-rate -- it works in USB
speed packets. However, the chip-set on the adapter needs to be told what
bit-rate the far end is sending...
--
Dennis L Bieber
--
For more options, visit http://beagleboard.org/discuss
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