AWRL6432BOOST: HWA output is always different for same input.

Girish Veerendra Medisetty

Part Number: AWRL6432BOOST
Other Parts Discussed in Thread: AWRL6432

Hi team,

We are using MMWAVE_L_SDK_05_01_00_04 and awrl6432 board. We added doppler proc DPU whose HWA config is exactly same as mmwave_sdk_03_05_00_04(without ping pong manner). We are using HWA_MEM_BANK0+0x2000 as input, HWA_MEM_BANK3 for intermediate data and HWA_MEM_BANK2 for output. We fed same radar cube multiple times and collected det-matrix for each iteration. Although, we are injecting same 1DFFT, det-matrix is different for each iteration. Here are the observations with octave.

Please help us here, why we are getting different det-matrix for same 1dFFT. thanks in advance.

Regards

M Girish Veerendra

over 2 years ago

0 zigang Yang over 2 years ago

TI__Mastermind 38415 points

Hi, there:

One thing you can consider is to zero out all the related memory that will be used before doing FFT, and check whether the output keep the same.

Best,

Zigang

0 Girish Veerendra Medisetty over 2 years ago in reply to zigang Yang

Prodigy 230 points

Hi zigang Yang,

I checked that, after filling Rcube memory with zeros, all the elements inside detmatrix are all zero. but when I load any other Rcube, every time I am getting different det matrix.

0 Angie Mitchell over 2 years ago in reply to Girish Veerendra Medisetty

TI__Genius 10700 points

Hi,

Zigang is out of office today, I am forwarding this to another team member and Zigang will be returning Friday.

Thank you,

Angie

0 zigang Yang over 2 years ago in reply to Girish Veerendra Medisetty

TI__Mastermind 38415 points

HI, there:

Actually we have Doppler DPU in the recent SDK release. If you download the MMWAVE_L_SDK_05_02_00_02, you will be able to find it at:

C:\ti\MMWAVE_L_SDK_05_02_00_02\source\datapath\dpu\dopplerproc

There is also a gesture demo that uses range-Doppler output at latest toolbox. There is a bug you ccsspec that you will need to fix though.

e2e.ti.com/.../faq-iwrl6432-gesture-recognition-demo-fails-to-build

Best,

Zigang

0 Girish Veerendra Medisetty over 2 years ago in reply to zigang Yang

Prodigy 230 points

Hi Zigang

Understood. But we have to use 5.1L SDK for our requirement and also trying to understand why this issue has been seen. Is there any reason why it happens
Please help us.

Regards
M Girish Veerendra

0 zigang Yang over 2 years ago in reply to Girish Veerendra Medisetty

TI__Mastermind 38415 points

HI, there:

Sorry, we really can not help to debug. I would recommend you to try one of the following approach.

1) Copy the Doppler DPU and integrate to your system.

2) Compare the implementation detail to see any problems.

Best,

Zigang

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AWRL6432BOOST: HWA output is always different for same input.