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Discussion Groups | Comp.DSP | Host to DSP Interrupt through PCI for DM642 EVM Problem

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Host to DSP Interrupt through PCI for DM642 EVM Problem - Linda Yang - 2004-05-26 19:23:00

Hi,

I am using TI provided PCI driver for DM642 EVM card, I was able to
download my code correctly, and successfully have my code running
after writing 1 to DSPINT in HDCR.

I am trying to cause an interrupt for host to DSP after the code is
running. I set the HOSTSW bit in PCIIEN and writing 1 to DSPINT in
HDCR, and set up my ISR for INT13. However, I could not get any
interrupt by doing so. What am I missing?

Thanks in advance!

Linda

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Re: Host to DSP Interrupt through PCI for DM642 EVM Problem - Brad Griffis - 2004-05-26 21:36:00

Did you enable bit 13 of the interrupt enable register (IER) as well as turn
on the global interrupt enable (GIE)?  I take it you've created a vector
table and have a branch statement to your ISR (or you're using BIOS)?


"Linda Yang" <h...@signalogic.com> wrote in message
news:0G9tc.1262$%K...@newssvr22.news.prodigy.com...
> Hi,
>
> I am using TI provided PCI driver for DM642 EVM card, I was able to
> download my code correctly, and successfully have my code running
> after writing 1 to DSPINT in HDCR.
>
> I am trying to cause an interrupt for host to DSP after the code is
> running. I set the HOSTSW bit in PCIIEN and writing 1 to DSPINT in
> HDCR, and set up my ISR for INT13. However, I could not get any
> interrupt by doing so. What am I missing?
>
> Thanks in advance!
>
> Linda
>