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IWR6843: IWR6843 output on Tera Term and data lost for vital sign demo

Part Number: IWR6843
Other Parts Discussed in Thread: MMWAVEICBOOST,

To whom it may concern:

Hello, I am running the vital sign demo using the IWR6843ISK with a MMWAVEICBOOST carrier board. I sometimes found the message in the command window saying: "Data size is not OK --- local Count: 2024 DataBufferSize 0 504" (please see the picture below)

It looks to me that some of the data packets were lost because the length of the data is not sufficient and that packet was not saved. 

I ran the Matlab script TI provided (main_readGUISavedBinary.m) with the saved data and it is confirmed that some "frames have been missed in saving the data" (picture below)

This thing happens quite often. So I am trying to find out the reason. I was trying to use Tera Term to monitor the output from the carrier board: 

For the XDS110 Class Application/User UART (COM5), I got the message below which I think it's reasonable:

But for the "XDS110 Class Auxiliary Data Port (COM6), it showed me random message I don't know how to interpret. I used 921600 baud rate at first and tried 115200 and other numbers. They all gave me the unreadable messages. I tried to logged it and selected "binary", the log file is still not readable. 

So my questions are:

1. Have you seen the "missing frame in saved data" situation? 

2. What caused the "missing frames". Is this because the radar didn't provide enough data or the pc didn't have enough time to read the radar input?

3. How do I troubleshoot this problem and monitor the data from radar directly? Is tera term a good tool? How to read the radar output from the tera term terminal?

Thanks a lot!

Lola