EDMA + CSL + SYS/BIOS + HWI + ISR

Clement FR

Hello everyone,

My setup : C6678 EVM, CCS 5.1.1.00031, Compiler v3.3, mcsdk_2_00_05_17, pdk_C6678_1_0_0_17, bios_6_32_05_54, xdctools_3_23_01_43

I have a problem using the EDMA (via CSL and not LLD) with SYS/BIOS and an HWI that is linked to an ISR.

Before attempting this, I've successfully implemented a simple block transfer via EDMA + CSL + polling, I've also done it with interruptions (code here : http://e2e.ti.com/support/dsp/c6000_multi-core_dsps/f/639/t/177116.aspx#637557 ) .

Now I'm tackling SYS/BIOS. With polling, no problems. With a HWI (and ISR) it doesn't use the ISR.

Indeed the block transfer works (the data is copied from DDR3 to L2 memory) but the program never enters the ISR.

EDIT : nevermind I didn't use the HWI and it works fine without.

Thank you,

Regards,

CM

0 Tom Kopriva over 13 years ago

Hi Clement,

I'll forward this thread to the folks working with the EDMA.

One thing coming to mind though would be to change the mask setting to: MaskingOption_NONE.

The snapshot below I got from the API documentation.

0 Clement FR over 13 years ago in reply to Tom Kopriva

Genius 4750 points

Thanks for the forwarding.

I'll try other options for the mask tomorrow.

it's strange because I've been following the online workshop about Sys/bios (http://processors.wiki.ti.com/index.php/EricScottVideos)

and they give the advice to set it to SELF or ALL.

0 Tom Kopriva over 13 years ago in reply to Clement FR

Hi Clement,

you are correct. I misread the purpose of the MaskingOption. You want to keep it MaskingOption_SELF.

0 Clement FR over 13 years ago in reply to Tom Kopriva

Genius 4750 points

I gave up using the HWI. It works fine without and even if it worked it'd only replace 3 lines of code on my precedent code.

Thread closed.

Processors forum