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RE: Fast serial respones, RTAI



If you enable CONFIG_ETRAX_FAST_TIMER and CONFIG_ETRAX_SERIAL_FAST_TIMER
you will get a timer that checks for new characters every 4*character
time
(and not faster than 250 us). Having said that its still difficult to
get 
them into userspace with low latency. 

There is a RTAI patch for ETRAX (as you found) performed in a master's
thesis.
At the end of the thesis there were some minor issues but the
development
has been continued by one of the students so they may have been resolved
by now.

/Mikael
-----Original Message-----
From: owner-dev-etrax@xxxxxxx.com">mailto:owner-dev-etrax@xxxxxxx.com] On
Behalf Of Bernhard Roessmann
Sent: Thursday, December 04, 2003 11:36 PM
To: dev-etrax
Subject: Fast serial respones, RTAI


Hi there,

does anyone knows an easy way to get 1ms response time for serial
communications?

What about RTAI on etrax, someone using it?


Regards,

-- 
Bernhard Roessmann
Don't Fear The Penguins!