From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Graf <p.graf@itknet.de>
To: ecos-discuss@sourceware.cygnus.com
Subject: Re: [ECOS] CS8900: Tx interrupt lost
Date: Tue, 14 Aug 2001 04:59:00 -0000
Message-id: <3.0.5.32.20010814135005.00905e90@192.168.128.220>
X-SW-Source: 2001-08/msg00452.html

Trenton D. Adams wrote:

>What does that mean exactly?  Maybe 250ms isn't long enough for a
>transmit?
>
>CS8900: Tx interrupt lost

Don't know about your target. Mine is a custom Hitachi SH3.

I had the same problem, if I just rely in Interrupts for Transmission.
On my target, the problem would not disappear if I send shorter packets or
use a longer timeout.

It seems that the interupts are really lost, either due to a hardware problem
of the Cirrus logic chip, or unlucky programming of its registers.

I worked around the problem by polling the device in addition to using the
interrupt.

Peter