IWR1443: Is the first chirp reliable?

Hi, Nino:

I could not follow your question.   Can you tell me:

1) What code you are running?  is it IWR1443 demo code on mmwave SDK 2.1.0.4?  Or you are using data capture card DCA1000?

2) Are you doing all the processing (FFT, maximum search, DFT with interpolation) using demo code or your own code?  If it is demo code, how you get the result?

3) Can you send out your configuration file?

4) What do you observe when you says the second chirp does not work?

Best,

Zigang

Hi Zigang

1) I use my code that's a modification of highaccuracy demo based on SDK 2.1

2) It's my code, and I can't' understand why i cant do only one chirp to have my measure: my chirp go in ADCMEM0 memory, I search the maximum magnitude of it in ADCMEM0 using peaksearch using HWA or (to have the 5 maximum magnitudes) my manual search and I ask to HWA to make an interpolation near 5 maximum to have 5 hi resolution maximum measure. 

3) configurarion file is "inside my code"

frameCfg->chirpStartIdx = 0;
frameCfg->chirpEndIdx = 0;
frameCfg->numLoops = 1;
frameCfg->triggerSelect = 1; //Software API based triggering
frameCfg->frameTriggerDelay = 0;
frameCfg->numFrames = 2; //numero di ripetizioni della ricerca
frameCfg->framePeriodicity = 800000;

when I try with only one chirp i set numFrames=1

4) chirp are done (I can see it by oscilloscope) but if I make any search about maximum magnitude result seems to be wrong

Thanks 

Nino