IWR6843ISK-ODS: EDMA each chirp from radar cube

JIYEON PARK

Prodigy 180 points

Part Number: IWR6843ISK-ODS
Other Parts Discussed in Thread: MMWAVE-SDK, IWR1443

Hello,

I wonder if there is way to EDMA each chirps from radar cube.

And made a new EMDA configuration.

But some how, It doesn't work.

There is no response form sensor, after call EDMA_setSourceAddress and EDMA_startDmaTransfer.

Could you check what is the problem?

over 5 years ago

0 Akash Gondalia over 5 years ago

TI__Guru 50240 points

Hi Jiyeon,

Would you be able to point out in code where this error occurs? Would you also include an changes you might have made to existing code?

Regards,

0 JIYEON PARK over 5 years ago in reply to Akash Gondalia

Prodigy 180 points

Hi,

Unfortunately, I am not using CCS. So I can't point out exact point.

But I guess that error occurs when call EDMA transfer.

Changes I made to code is below.

- DPU_AoAProcDSP_Resources_t: Add DPEDMA_ChanCfg edmaChirps and cmplx16ImRe_t *chirpsBuf

- AoAProcDSP_configEDMA: Program DMA channel

- AoAProcDSP_RangeAzimuthHeatmap : Call EDMA transfer

aoaprocdsp.h aoaprocdsp.c

0 Nitin Sakhuja over 5 years ago in reply to JIYEON PARK

TI__Mastermind 30405 points

Hi Jiyeon,

Could you please provide some context to what you are trying to achieve at the system/application level by making these changes?

Regards

-Nitin

0 JIYEON PARK over 5 years ago in reply to Nitin Sakhuja

Prodigy 180 points

Hello,

I want to monitor 1st chirp of each virtual antenna using azimuth heat map to reduce amount of computation.

And currently I tried "mempcy" instead of EDMA, I guess It works OK.

But EDMA might reduce memory access time than memcpy

Could you recommend me how to use EDMA?

0 Nitin Sakhuja over 5 years ago in reply to JIYEON PARK

TI__Mastermind 30405 points

Hi Jiyeon,

Please look at the following resources to understand EDMA usage in context of mmWave SDK.

1. MMWAVE-SDK EDMA driver test under C:\ti\mmwave_sdk_03_04_00_03\packages\ti\drivers\edma\test

2. E2E Thread: IWR1443: How to set up basic EDMA transfer

3. EDMA3 user guide

4. EDMA3 FAQ

Regards

-Nitin

Sensors

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IWR6843ISK-ODS: EDMA each chirp from radar cube