From: Grant Edwards <grante@visi.com>
To: "Patrick O'Grady" <patrick@softprocess.com>
Cc: ecos-discuss@sourceware.cygnus.com
Subject: Re: [ECOS] pid_serial driver
Date: Tue, 07 Mar 2000 09:35:00 -0000 [thread overview]
Message-ID: <20000307113548.A23598@visi.com> (raw)
In-Reply-To: <Pine.BSF.4.10.10003070833320.1233-100000@plasticgrape.com>
> Anyway, the driver isn't too tough: It turns out that the driver
> ..._serial_putc function should return true if it's able to send the
> character or false if it can't... the OS will call the function with
> successive data until it returns false. Since the '550 is kinda lame and
> has neither a FIFO counter or FIFO full indicator, we have to keep a
> counter to tell us when we can't store any more data.
I'm working on an 850 driver at the moment, and they've kludged
in a way to read the FIFO counter, so serial_putc is pretty
straight forward.
> Anyway, this code is already done, so feel free to borrow as much as you
> like... there's more information at
> ftp://sourceware.cygnus.com/pub/ecos/contrib/hal/i386/hal-i386-pc-20000210.html .
Thanks
--
Grant Edwards
grante@visi.com
prev parent reply other threads:[~2000-03-07 9:35 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-02-18 10:11 Grant Edwards
2000-02-18 11:21 ` Grant Edwards
2000-02-19 3:08 ` Jesper Skov
2000-02-21 13:14 ` Grant Edwards
2000-02-21 14:01 ` Gary Thomas
2000-02-21 20:33 ` Grant Edwards
2000-02-22 4:55 ` Gary Thomas
2000-03-07 8:20 ` Grant Edwards
2000-03-07 9:07 ` Patrick O'Grady
2000-03-07 9:35 ` Grant Edwards [this message]
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