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IWR1443: Can't use COM3 and COM4 to open visualizer GUI

Genius 13655 points
Part Number: IWR1443


Hello Champs,

Customer designed his own board according to IWR1443BOOST. He removed TM4C, connected XDS110 to JTAG, used CP2104 to convert UART to USB. The PC shows 3 UARTs correctly. Customer can use COM8 to flash code. But he can't use COM3 and COM4 to open below visualizer.  

He can open the visualizer on IWR1443BOOST. 



Thanks
Regards,
Shine