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IWR6843ISK: People counting lab not work

Part Number: IWR6843ISK

Hi

I have IWR6843ISK. I program flash with mmwave_industrial_toolbox_3_2_0__win\mmwave_industrial_toolbox_3_2_0\labs\lab0015_pplcount_68xx\quickstart\PC_lab_xwr68xx.bin and tested it with pplcount_gui.exe. it is ok.

But I program flash with mmwave_industrial_toolbox_4_1_0\labs\people_counting\68xx_people_counting\prebuilt_binaries\pplcount_lab_xwr68xx.bin and tested it with mmwave_industrial_toolbox_4_1_0\labs\people_counting\68xx_people_counting\gui\pplcount_gui. It does not work. How can I fix this? Errors is below :

Opening configuration file ../chirp_configs/mmw_pplcount_demo_default.cfg ...
trackingCfg specifies -6.981317e-01.
GUI specifies 0. 90 will be used for azimuth in cfg.
Sending configuration from ../chirp_configs/mmw_pplcount_demo_default.cfg file to IWR16xx ...

Serial Port Object : Serial-COM7

Communication Settings
Port: COM7
BaudRate: 115200
Terminator: 'LF'

Communication State
Status: open
RecordStatus: off

Read/Write State
TransferStatus: idle
BytesAvailable: 0
ValuesReceived: 0
ValuesSent: 0

flushCfg
Warning: A timeout occurred before the Terminator was reached.
'serial' unable to read all requested data. For more information on possible reasons, see Serial Read Warnings.
Warning: A timeout occurred before the Terminator was reached.
'serial' unable to read any data. For more information on possible reasons, see Serial Read Warnings.
Warning: The specified amount of data was not returned within the Timeout period.
'serial' unable to read any data. For more information on possible reasons, see Serial Read Warnings.
dfeDataOutputMode 1
Warning: A timeout occurred before the Terminator was reached.
'serial' unable to read all requested data. For more information on possible reasons, see Serial Read Warnings.
Warning: A timeout occurred before the Terminator was reached.
'serial' unable to read any data. For more information on possible reasons, see Serial Read Warnings.
Warning: The specified amount of data was not returned within the Timeout period.
'serial' unable to read any data. For more information on possible reasons, see Serial Read Warnings.
channelCfg 15 5 0