Compiler/AWR1642: Problem about "EDMA"

Xiao Du

Intellectual 410 points

Part Number: AWR1642

Tool/software: TI C/C++ Compiler

In "EDMAutil_configType2a()" , "destinationBindex" was declared as "int16_t" . for my code was like that

the numDopplerBins = 1024 , so destinationBindex = 32768 .

Is there any solution for that?

over 7 years ago

0 Raghunandan Kamath over 7 years ago

TI__Mastermind 22155 points

Hello Anist,
We will look into this and let you know if there is fix available.

-Raghu

0 Xiao Du over 7 years ago in reply to Raghunandan Kamath

Intellectual 410 points

Hello Raghu , have you solved this problem ?

0 Anil Mani over 7 years ago in reply to Xiao Du

TI__Expert 4720 points

Hi Anist,

Some of the parameters of the EDMA (which is a module that is used to transfer large amounts data) are limited to 32767 (or 2^(16-1)-1). What this means in your case, is that you'd have to set the number of chirps to 512, in order to get the OOB (out-of-box) demo to work.

If you need 1024 chirps per frame, you would need to either
1. reduce the number of Tx antennas, or
2. change the processing flow. This would require many changes to the OOB code. One way forward is to modify the code to place data corresponding to each antenna in a separate memory location so that the destinationBIndex is reduced by a factor of 8.

Regards
Anil

0 Xiao Du over 7 years ago in reply to Anil Mani

Intellectual 410 points

Hello , Anil
I reduce the number of RX antennas . And another question , does the AWR1642 support 32 AdcSamples ? I made NumAdcSamples = 32 , the code run well.

0 Anil Mani over 7 years ago in reply to Xiao Du

TI__Expert 4720 points

HI Anist,

That should be fine.

Regards
Anil

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Compiler/AWR1642: Problem about "EDMA"