This is the mail archive of the
ecos-discuss@sourceware.cygnus.com
mailing list for the eCos project.
Re: Moving DSR processing to ISR
- To: Dave Airlie <airlied at parthus dot com>
- Subject: Re: [ECOS] Moving DSR processing to ISR
- From: Jonathan Larmour <jlarmour at redhat dot co dot uk>
- Date: Mon, 26 Jun 2000 19:56:05 +0100
- CC: ecos-discuss at sourceware dot cygnus dot com
- Organization: Red Hat UK Ltd.
- References: <Pine.LNX.4.21.0006261639120.20460-100000@limerickpc103>
Dave Airlie wrote:
>
> A couple of days ago Grant Edwards suggested moving the serial DSR
> processing into the ISR area, I think this would aid my efforts to get a
> more reliable serial link with the PID board, what pitfalls do people
> envisage with this
I would doubt this would help - the chances are that your problems are
caused by interrupts being disabled for too long in the stub, rather than
DSR latency. That's why you only see it when debugging. Grant knew he had a
DSR that took a substantial time to run, whereas there should be nothing
special about DSR processing in your case (unless you've added something of
course :-)).
Jifl
--
Red Hat, 35 Cambridge Place, Cambridge, UK. CB2 1NS Tel: +44 (1223) 728762
"Plan to be spontaneous tomorrow." || These opinions are all my own fault