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Host to DSP Interrupt through PCI for DM642 EVM Problem

Started by Linda Yang May 26, 2004
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

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" <hyang@signalogic.com> wrote in message
news:0G9tc.1262$%K3.1129@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 >