From: "Michael Anburaj" <embeddedeng@hotmail.com>
To: RandyLin@mxic.com.tw, ecos-discuss@sources.redhat.com
Subject: Re: [ECOS] CS8900a interrupt problem on EB40
Date: Tue, 07 Oct 2003 04:33:00 -0000 [thread overview]
Message-ID: <Law15-F45mlm1DTvJHN00000e63@hotmail.com> (raw)
Normal, You need to Acknowledge first the interrupt & then unmask it.
Before unmasking if there were pending interrupts, then even after unmasking
-- the pending interrupt would interrupt (IRQ) until itÂ’s cleared.
I am not familiar with the AtmelÂ’s Interrupt controller. So, I may be right
or wrong.
Cheers,
-Mike.
>From: RandyLin@mxic.com.tw
>To: ecos-discuss@sources.redhat.com
>Subject: [ECOS] CS8900a interrupt problem on EB40
>Date: Mon, 6 Oct 2003 17:50:08 +0800
>
>CS8900a is connected with IRQ1,ethernet cable is not connected.
>after cyg_drv_interrupt_unmask(),
>EB40 generate interrupt all the time, the AIC_IPR is 0x00070005(IRQ1 is
>pending)
>the IRQ bit is set, is it mean interrupt?
>but read cs8900a register CS8900A_ISQ, always 0, that should be no
>interrupt.
>I don't know why there is always interrupt?
>thanks for any help!
>
>
>
>--
>Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
>and search the list archive: http://sources.redhat.com/ml/ecos-discuss
>
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Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
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next reply other threads:[~2003-10-07 4:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-07 4:33 Michael Anburaj [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-10-06 9:51 RandyLin
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