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Date:      Wed, 3 Mar 2021 11:00:04 +0300
From:      KOT MATPOCKuH <matpockuh@gmail.com>
To:        Andriy Gapon <avg@freebsd.org>
Cc:        freebsd-usb@freebsd.org, FreeBSD Current <freebsd-current@freebsd.org>,  freebsd-stable List <freebsd-stable@freebsd.org>
Subject:   Re: uchcom update
Message-ID:  <CALmdT0Vjn=B2d=idGvce4FoKQQpWBbCS6wNR=nNOYKpgwKu%2BVw@mail.gmail.com>
In-Reply-To: <592ff8c3-a47f-30c2-4e09-1a11152715c8@FreeBSD.org>
References:  <eb56d9bc-a915-fa56-d1c2-b24cc30c8aa2@FreeBSD.org> <83f7a6dd-5d7e-cfd2-e580-4db0c7134220@capeaugusta.com> <CALmdT0XEvbnRW99H3JRp1iN7Zbr1S7EyEiLFSUMOpN6kvykPtQ@mail.gmail.com> <592ff8c3-a47f-30c2-4e09-1a11152715c8@FreeBSD.org>

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Thank You, Andriy!

It solved the problem for me too.

Also this can be applied without reboot via command:
sysctl hw.usb.no_cs_fail=3D1

=D0=B2=D1=81, 28 =D1=84=D0=B5=D0=B2=D1=80. 2021 =D0=B3. =D0=B2 14:21, Andri=
y Gapon <avg@freebsd.org>:

> On 28/02/2021 11:03, KOT MATPOCKuH wrote:
> > Hello!
> >
> > I'm using FreeBSD 12.2-STABLE r368656 and got usb-to-rs232 with this
> > controller.
> > I see /dev/cuaU0 after plugging in adapter, I can attach to serial line
> > using cu, but after sending any symbol to device I have device
> reconnection:
> > uchcom0 on uhub0
> > uchcom0: <vendor 0x1a86 USB2.0-Ser, rev 1.10/2.54, addr 17> on usbus0
> > uchcom0: CH340 detected
> > uchcom0: at uhub0, port 9, addr 17 (disconnected)
> > uchcom0: detached
> > uchcom0 on uhub0
> > uchcom0: <vendor 0x1a86 USB2.0-Ser, rev 1.10/2.54, addr 17> on usbus0
> > uchcom0: CH340 detected
>
> I have this in my loader.conf:
>
> # Ignore result of "clear stall" (clearing halt on endpoints)
> # CH340 USB<->RS232 requires this
> # and it seems that Linux and Windows do this by default
> hw.usb.no_cs_fail=3D1
>
> I recall that without that tuning I had a similar problem.
>
> > =D0=B2=D1=82, 5 =D0=B8=D1=8E=D0=BD. 2018 =D0=B3. =D0=B2 15:05, Ian FREI=
SLICH <ian.freislich@capeaugusta.com
> >:
> >
> >> On 05/22/2018 09:44 AM, Andriy Gapon wrote:
> >>> Yesterday I committed some changes to uchcom (so far, only in CURRENT=
).
> >>> Commits are r333997 - r334002.
> >>>
> >>> If you have a CH340/341 based USB<->RS232 adapter and it works for yo=
u,
> >> could
> >>> you please test that it still does?
> >>> If you tried your adapter in the past and it did not work, there is a
> >> chance it
> >>> might start working now.  Could you please test that as well?
> >>
> >> ugen5.4: <vendor 0x1a86 USB2.0-Serial> at usbus5, cfg=3D0 md=3DHOST sp=
d=3DFULL
> >> (12Mbps) pwr=3DON (96mA)
> >> ugen5.4.0: uchcom0: <vendor 0x1a86 USB2.0-Serial, rev 1.10/2.54, addr =
3>
> >>
> >> It's not made it any worse.  I'm not using this adapter by choice - it=
's
> >> a USB to Maxim (Dallas) one-wire bus adapter.  The manual used to stat=
e
> >> that these are possibly the worst chips ever.  Is that still the
> >> prevailing opinion?
>
>
> --
> Andriy Gapon
>


--=20
MATPOCKuH



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