Kindly connect the USB Debug cable (TTL-232R-RPI cable) to the Debug UART Header. For more details, please refer to the Quick Start Guide:
The debug cable is an optional deliverable and will be provided only upon request. This cable is also available online.
The debug cable can also be ordered from the following link:
[TTL-232R-RPI Debug Cable] (https://mou.sr/48GC, cable stm)
For detailed board setup instructions, please refer to the User Guide and Quick Start Guide (QSG).
Also, kindly ensure that the Minicom settings are configured correctly as per the QSG and verify the debug cable connections as well.
For further inquiries, please get in touch with mktg@iwave-global.com
Please find the detailed G69S product information in the below link,