Just FUSB302. It uses the toggle mode to work out a device or host
attach and the driver (yes, I authored/submitted that) handles the
necessary reconfiguration of the pull ups/downs and then signals, via a
poll, to the application layer (or, in my case, board-level driver code)
what has occurred to allow host power switching. To make it all work, I
also added (and submitted/have had merged) changes to the SAMA5 usb code
to allow a single physical port (A) to act as host or device switched in
real time. It works! Essentially OTG/dual-role functionality on a
processor that doesn't natively support it.
Because CDC/ACM fundamentally works on my board, I think the FUSB302
stuff is not to blame. Knowing you had it working as a console is good
to know, so its probably a mis-configuration somewhere, or a side-effect
of the changes I made (but, yes, had submitted so are now part of NuttX
so *could* raise as an issue: but I'd be the one to fix it lol).
If you have a config that has console on CDC/ACM working to send me that
would be a great reference but only if it's not too much trouble to
(re)create.
Once (if) I am sure it is not as simple as a config error I will raise
is as an issue but, for now, I'm inclined to think it's down to me.
If I get nowhere tomorrow morning, I'll email you my config: a second
opinion would be much appreciated!
On 16/08/2023 21:36, Adam Feuer wrote:
Are you using an FUSB302 with an FUSB340 (USB Switch)? My
understanding is that the FUSB302 only provides USB C power delivery
along with a USB2.0/USB 3.0 connection. That chip doesn't do anything
to allow host and device on the same port. As far as I know that's a
function of the SAMA5D27 and the NuttX drivers. I actually don't know
if the SAMA5D2 UDPHS and UHPHS can function simultaneously, or whether
NuttX supports that. Did you get that working? Or is that the problem
you are trying to solve?
So what's the problem with filing a bug? And didn't you add support
for the FUSB302 into NuttX?
Anyway... we can talk on email for now. Do you have one that doesn't
work? I'd love it if you can send it to me.
What I got working was CDC/ACM console and CDC/ECM ethernet over USB
on the same USB connection. Is that relevant to what you're looking
for? If so I can come up with a config that will do that.
-adam
On Wed, Aug 16, 2023 at 12:47 PM Tim Hardisty <t...@jti.uk.com> wrote:
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>
<mailto:acas...@gmail.com> wrote:
Hi Tim,
On 8/16/23, Tim Hardisty<t...@jti.uk.com.invalid>
<mailto: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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--
Adam Feuer <a...@starcat.io>
--
Regards,
Tim Hardisty
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