From: Johan Hovold <johan@kernel.org>
To: bugzilla-daemon@bugzilla.kernel.org
Cc: linux-usb@vger.kernel.org
Subject: Re: [Bug 208959] USB-serial (mct_u232): bit7=1 when tty is set to cs7?
Date: Wed, 26 Aug 2020 09:08:27 +0200 [thread overview]
Message-ID: <20200826070827.GK21288@localhost> (raw)
In-Reply-To: <bug-208959-208809-yuyUa8mpVo@https.bugzilla.kernel.org/>
On Tue, Aug 25, 2020 at 03:20:48PM +0000, bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=208959
>
> --- Comment #2 from mslade@epic-code.com.au (mslade@epic-code.com.au) ---
> Please clarify what you mean by "converter" here.
I was referring to the USB-serial device.
> FYI to test I was just doing this:
>
> # stty -F /dev/ttyUSB0 1200 cs7
What is the output of "stty -a -F /dev/ttyUSB0" after this?
> # dd if=/dev/ttyUSB0 bs=1|hd
Try using a terminal program instead and connect the device to another
USB-serial device (e.g. ftdi or pl2303) and see if you can get 7-bit
words to work.
You can also try enabling debugging and provide the relevant bits from
dmesg when you connect, configure and read from the device:
echo module mct_u232 +p > /sys/kernel/debug/dynamic_debug/control
Johan
next prev parent reply other threads:[~2020-08-26 7:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-19 2:52 [Bug 208959] New: USB-serial (mct_u232): bit7=1 when tty is set to cs7? bugzilla-daemon
2020-08-24 8:42 ` Johan Hovold
2020-08-24 8:42 ` [Bug 208959] " bugzilla-daemon
2020-08-25 15:20 ` bugzilla-daemon
2020-08-26 7:08 ` Johan Hovold [this message]
2020-08-26 7:08 ` bugzilla-daemon
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