Re: Issue with RS232 <-> USB adaptor (FC15)

[f8arr <f8arr@f8arr.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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