We have a serial port debugging feature in TOOL 2019 software. It will allow you to set the baud rate and all other parameters directly.
And please also make sure that you have the USB driver installed correctly：
https://www.stoneitech.com/media/upload/Download/Software%20%26%20Driver/Driver%20for%20USB2.0%20to%20RS232%20converter.rar
Reply To: I can’t use UART to communicate with the STONE LCD module, what’s wrong with it?Fiona Liu2020-12-17T09:40:43+08:00