From: f8arr <f8arr@f8arr.org>
To: Dave Platt <dplatt@radagast.org>
Cc: linux-hams <linux-hams@vger.kernel.org>
Subject: Re: Issue with RS232 <-> USB adaptor (FC15)
Date: Mon, 13 Jun 2011 23:26:32 +0200 [thread overview]
Message-ID: <4DF68088.9070501@f8arr.org> (raw)
In-Reply-To: <4DF67C02.4060200@radagast.org>
hum...
you are right the Issue is not clear.. something is going wrong...
I have to investigate.
73 qro
f8ARR
On 06/13/2011 11:07 PM, Dave Platt wrote:
> On 06/13/2011 01:53 PM, Bruno Tréguier wrote:
>> Le 13/06/2011 à 22:28, f8arr a écrit :
>>> Hello,
>>>
>>> I'm not sure because I found the problem to resolve my issue :
>>>
>>> stty --file=/dev/ttyUSB0 clocal
>>>
>>> I remove all flow control on the serial.
> I don't think that "clocal" removes flow control (on RTS/CTS) -
> that's controlled by a separate option.
>
> What "clocal" does, is "disable modem control signals".
> Specifically, for a port marked "-clocal" (not local),
> an open() call will block until the device on the port
> asserts the CD (carrier detect) line, and if the CD
> line is deasserted the port will "hang up". This is
> useful for serial ports connected to dial-up modems,
> but not particularly desirable for serial ports being
> used to control local devices such as transceiver.
>
> I can't recall whether a -clocal port automagically
> asserts DTR even when it isn't open... I don't think so
> but I could be wrong.
>
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next prev parent reply other threads:[~2011-06-13 21:26 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-13 19:24 Issue with RS232 <-> USB adaptor (FC15) f8arr
2011-06-13 19:40 ` Dave Platt
2011-06-13 19:54 ` f8arr
2011-06-13 19:58 ` Bruno Tréguier
2011-06-13 20:28 ` f8arr
2011-06-13 20:53 ` Bruno Tréguier
2011-06-13 21:07 ` Dave Platt
2011-06-13 21:26 ` f8arr [this message]
2011-06-14 20:52 ` f8arr
2011-06-14 21:01 ` Bruno Tréguier
2011-06-14 21:06 ` f8arr
2011-06-14 21:20 ` f8arr
2011-06-14 21:39 ` Bruno Tréguier
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