EDMA3 Transfer Completion Interrupts number in OMAP-l138 dsp side

PF Melamed

Hello!

We are using the OMAP-L138. for indoor navigation. I'm trying to catch a Transfer Completion Interrupt from EDMA on the DSP side of OMAP-L138.
I'm using channel 10 for my DMA transfer,

In the SPRUGP9B document page 42 it is mentioned that the EDMA3_0_CC0_INT (EDMA3 Transfer Completion Interrupts) event number is 8
I use HWI_eventMap command to map event 8 to a physical interrupt without success but when I use the event 11 it is work

Whould you like to explain me why?

Regards
PF

over 13 years ago

0 Mukul Bhatnagar over 13 years ago

TI__Guru* 83975 points

Recommend looking at the simple examples provided for EDMA as part of the quickstartrcsl

http://processors.wiki.ti.com/index.php/QuickStartOMAPL1x_rCSL

If you are using EDMA3 LLD , then i recommend looking at the following wiki

http://processors.wiki.ti.com/index.php/Programming_the_EDMA3_using_the_Low-Level_Driver_(LLD)

My understanding is that by default EDMA3LLD uses ECM (not a direct mapped HWI) , so to change to direct map, might require some changes in the EDMA3 LLD

Regards

Mukul

0 PF Melamed over 13 years ago in reply to Mukul Bhatnagar

Intellectual 270 points

Mukul,

I am using the EDMA3 LLD and I saw this wiki

http://processors.wiki.ti.com/index.php/Programming_the_EDMA3_using_the_Low-Level_Driver_(LLD)

please check the SPRUGP9B document page 42 for understanding my question....

Tanks

0 Mukul Bhatnagar over 13 years ago in reply to PF Melamed

TI__Guru* 83975 points

I think you might be confusing the 128 DSP events (EDMA completion interrupt being one of them) with the DSP maskable interrupts CPUINT4 to CPUINT15 ( details in the megamodule guide). If I am wrong, and you are genuinely having trouble with EDMA3LLD , let me know, and I will move this query to the BIOS forums

Regards

Mukul

0 PF Melamed over 13 years ago in reply to Mukul Bhatnagar

Intellectual 270 points

Yes please move this query to the BIOS forums

Thanks

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EDMA3 Transfer Completion Interrupts number in OMAP-l138 dsp side