Date: Mon, 06 May 2013 11:21:05 -0400 From: Lowell Gilbert <freebsd-questions-local@be-well.ilk.org> To: Miguel Barbosa =?iso-8859-1?Q?Gon=E7alves?= <m@mbg.pt> Cc: freebsd-questions@freebsd.org Subject: Re: Disable FIFO on UART Message-ID: <44r4hkuobi.fsf@lowell-desk.lan> In-Reply-To: <CAEdntmtta6LQ3U62sod8vGggTT5f1mqoWE0cf0wma=MCs-uvNA@mail.gmail.com> ("Miguel Barbosa =?iso-8859-1?Q?Gon=E7alves=22's?= message of "Sun, 5 May 2013 12:59:17 %2B0100") References: <CAEdntmtta6LQ3U62sod8vGggTT5f1mqoWE0cf0wma=MCs-uvNA@mail.gmail.com>
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Miguel Barbosa Gon=E7alves <m@mbg.pt> writes: > Back in FreeBSD 7 there was a flag to disable the FIFO on the sio [...] > Now with FreeBSD 8 which uses the UART device driver there's no option fo= r that. > > I am looking to reduce the jitter I am getting on the serial port when > connecting a GPS to the server. > > Can anyone help? It looks do-able, although the interface is a bit more abstract and covers a wider variety of hardware. You would probably need to contact whoever's working on that driver these days.
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