How to add a interrupt in DSP/BIOS

Chuan Chen76573

I'm using CCS4.1 and DSP/DIOS 5.41.02.14, I use EVM5515, I want to add a DMA interrupt to my project, in my DSP/DIOS tcf file, I added my DMA ISR name _dma_isr to HWI_INT8 item. In MEM section I set VECT base to 0x04fe00, in the code I used HWI_enable, but I couldn't get code run to my ISR, please help me to find what else I should add.

Thanks

over 14 years ago

0 Aditi Akula over 14 years ago

Expert 1440 points

Chuan,

Did you enable HWI8 in the Interrupt enable register?

Also DMA interrupt?

Aditi.

0 Chuan Chen76573 over 14 years ago in reply to Aditi Akula

Prodigy 120 points

Hi Aditi,

I set DMA interrupt, and when I run code after DMA, I can find IFR0-IF8 changed to 1, I think DMA interrupt happened. But I found my interrupt vectors is not correct, I checked Core Register-IVPd and IVPH are all 0x09FC, I checked my dma_isr pointer is 0x006coe, please tell me how to set a interrupt by using DSP/BIOS tcf, do I need add a vector section in cmd file?

IER0-IE8 is 0, is that mean DMA interrupt is masked, how to change it?

Thanks

0 Aditi Akula over 14 years ago in reply to Chuan Chen76573

Expert 1440 points

Chuan,

The IER0-IE8 has to be enabled. This is the key.

Look into the datasheet or CPU reference Guide and find the address of IER0,

write a 1 to the IE8 position of IER8.

This should help.

Aditi.

0 Chuan Chen76573 over 14 years ago in reply to Aditi Akula

Prodigy 120 points

Aditi,

After set IER0-IE8, I successed got DMA interrupt. Thank you very much!

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How to add a interrupt in DSP/BIOS