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
Host to DSP Interrupt through PCI for DM642 EVM Problem
Started by ●May 26, 2004
Reply by ●May 26, 20042004-05-26
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 >