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AWR1843BOOST: Some question about ccs debug on AWR1843 use MRR demo

Part Number: AWR1843BOOST

Hello,TI's enggineer:

I use the labo of MRR demo,and develop Long range radar.However i meet some trouble when i debug on ccs,the question as see follow:

when i run the dss and mss,the errors appear immediately.And i have no idea for it.And i find the error always occur when after the function of MmwDemo_processChirp.Is it a configuration issue with EDMA?What is the general problem that causes this to happen?

My usage scenario is SDK3.5.0.4,lab0007_medium_range_radar,CCS10.

Waveform parameters :

S 4.39MHz/us Fs 6.25MHz

T 89us Tv 82us rampendtime 86us idle time 3us adcStartTime 3us

B 360MHz 

Chirp num 256

numAdcSamples 512

Thanks a lot

Bryant