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AWR1642: Analyzing mmw Demo Data Structure (Detected objects Descriptor)

Kishor Naik
Prodigy 60 points
Part Number: AWR1642

Hello,

I am analyzing the UART data received from EVM AWR1642 kit, with help of Serial port utility.

To understand the data format,  I am referring the document titled " mmw Demo Data Structure v0.1 xWr14XX/xWR16xx SDKv1.0.x.x".

I have configured device with default parameters with only scatter plot selection and capture the data with help of Serial port Utility as shown below.

Here, header is 36 bytes (green rectangle), Number of detected objects is 4 bytes (blue rectangle).

Now,

Q1. What are 4 bytes 0x00 00 00 00 , shown in red rectangle? 

Q2. Does above 4 bytes are included in total length of structure of Detected Objects?

Q3. Does structure tag maps plot selection? 

And Important 

Q4. Please can you give some more details about Detected Objects Descriptor. it is total 4 bytes or 8 bytes? And How it is computed?