I just realized that we're talking about the LinkUSB, which is a USB/serial
adapter and a LINK. The hardware/serial parameters are more a matter of the
driver implementation than anything fundamental to the serial port.
Many of the serial devices: 9097, 9097U Link, HA5S, ... use power from the
dtr line in the serial port. We'd have to test carefully before changing the
serial parameters for everyone.
If some implementations of the USB/serial require hardware control, that
might be seen when other USB/serial converters are used as well. Perhaps if
OWFS first tries no hardware control, and then hardware control (automatic
testing of both modes) we'd get the most robust solution.
Paul Alfille
On Tue, Aug 24, 2010 at 8:33 PM, Eloy Paris <[email protected]> wrote:
> On 08/24/2010 07:40 PM, Paul Alfille wrote:
>
> > Ok, I'll test this with the various other serial adapters to see if this
> > can be the default. Thanks for hunting this down.
>
> Sure thing, Paul; glad to help.
>
> By the way, Bill Farmer from iButtonLink mentioned that they use
> digitemp and have no problems with the LinkUSBs. For me, digitemp
> behaved exactly as owserver did, i.e. select() timing out and never
> indicating that there was data ready to be read. If digitemp works for
> them and not for me then the only explanation I can think of is that
> different versions of the components involved (digitemp, the Linux
> kernel, the FTDI USB to serial driver) behave differently.
>
> I asked Bill Farmer if they knew anything about a requirement of
> hardware flow control for the LinkUSB to work but I haven't heard back
> from them.
>
> Cheers,
>
> Eloy Paris.-
>
>
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