Is it possible to use python to get True Full Duplex on a Serial port?

Grant Edwards grante at visi.com
Sat Aug 15 16:25:03 CEST 2009


On 2009-08-15, Hendrik van Rooyen <hendrik at microcorp.co.za> wrote:
> On Friday 14 August 2009 16:19:04 Grant Edwards wrote:
>
>> What platform are you using?  I suppose it's possible that
>> there's something broken in the serial driver for that
>> particular hardware.
>
> Your experience seems to be exactly the opposite to mine - you
> are saying it should "just work" and I am seeing half duplex
> functionality.

If you're using Python's normal open()/read()/write() calls,
then that introduces all sorts of issues.  I always use direct
OS calls os.open(), os.read(), os.write().

> Any comments from a Linux Guru?

Are you using python file operations open/read/write or OS
file-descriptor operations os.open/os.read/os.write?

-- 
Grant




More information about the Python-list mailing list