Got menus working for the serial port configuration for:

• Baud rate
• Serial Protocol
• Handshake

Menus are all in place, but not all of the functions are created for the above. The baud rate select menu is working/tested and set to 9600 baud as default. Tested at 9600 baud and 300 baud.

Got UART transmit code working.

This is now a minimal viable product.

Working code is here (SDLoader_V2-20220615..zip file).