Hi Adam,
My board is pushing many boundaries as it allows usb host and device to
coexist on a single physical port using an FUSB302 controller. It means
it can never be as clear cut as it being a bug to report!
If you happen to have a config that works for this it would be useful
for sure, but I will plug away at it more tomorrow as the syslog port
not behaving is probably a big clue.
Regards,
Tim.
On 16/08/2023 20:13, Adam Feuer wrote:
Hi Tim and Alan,
I tested CDC/ACM when I was doing the CDC/ECM performance increases about
18 months ago. It seemed like everything worked fine on the Jupiter Nano,
the SAMA5D2-XULT. I can put together a config for this again and test it...
or send me yours, and I will adapt to Jupiter Nano. If we have a config
that repros the problem, it should be possible to fix.
Will you file a bug report so we can communicate there in public, and tag
us or send the url by email?
And then post your config there. I'll try it out and try to repro!
-adam
On Wed, Aug 16, 2023 at 10:56 AM Alan C. Assis<acas...@gmail.com> wrote:
Hi Tim,
On 8/16/23, Tim Hardisty<t...@jti.uk.com.invalid> wrote:
I am trying to get CDC/ACM working on my custom board so I can have a
USB console. I have finally worked out the arcane set of CONFIG options
needed, found the to-be-expected bugs/inconstencies with some of the
SAMA5 code, that I have worked around for now (most are covered by
disabling debug assertions for now)...and...finally get an NSH prompt on
a Minicom terminal.
Yay!
But data transmission TO the board from Minicom is behaving very
strangely.
If I want to send '?' - to see what built-in apps I have, I need to type
the '?' four times followed by 4 ENTERs, then I get the expected
response. Eh?
Tried Minicom on Windows/WSL or Ubuntu, and PuTTY. Minicom has been my
console of choice, via serial, for ages.
This seems very odd - it's 100% OK to the PC but 100% not OK from PC to
board.
In case it's related...SYSLOG to the original /dev/ttyS1 no longer
works, and playing with SYSLOG configuration, seems to interfere with
the CDC/ACM usb functionality as well by stopping it working if I dare
to try to log to /dev/console!
Anyone got any suggestions before I scream even louder!!!???
I never saw this behavior before!
Since you also tested on Windows, it is not something in the computer
messing with /dev/ttyACM0.
The first thing I noticed is that none board has usbnsh inside
boards/arm/sama5/xxxxx/configs/ so probably you are the first one to
test this feature.
So, start looking what the boards from other arch enable to get USB
CDC/ACM working as console.
And because there is no usbnsh board config for this chip, maybe it
needs more investigation.
I'm CC Adam, maybe he already tested it on Jupiter Nano board.
BR,
Alan
--
Regards,
Tim Hardisty
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