Re: what decides allowable serial speeds?
Re: what decides allowable serial speeds?
- Subject: Re: what decides allowable serial speeds?
- From: Chris Logsdon <email@hidden>
- Date: Tue, 25 Jul 2006 14:32:37 -0700
- Thread-topic: what decides allowable serial speeds?
You might want to look at the SerialFamily.kext source. There is a table in
there of supported speeds. You might have to hack it to support your speed
if it's not in there. Of course you'd need to update this whereever you
deployed your hardware.
--
Chris D. Logsdon
Senior Software Engineer
CharisMac Engineering, Inc.
email@hidden
On 7/25/06 11:06 AM, "Sean McBride" <email@hidden> wrote:
> Hi all,
>
> I notice that the highest speed termios.h defines is B230400. I have a
> serial device that supports higher speeds such as 921600. Is it not
> present in termios.h because it is unsupported? tcsetattr() returns
> success after setting the speed to 921600. Do the supported speeds
> depend exclusively on the serial hardware (USB-serial adapter these
> days)? Or does the OS have influence on which speeds are allowed?
>
> I ask all this because my device works at many speeds, except the
> highest speed it supposedly supports. I'm trying to figure out if this
> is the device's fault, the OS's, or the USB-Serial Adapter's.
>
> Thanks,
>
> PS: I hope this list is appropriate, sorry if not.
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