* Serial stream driver for the USART subsystem on supported USB AVRs. This makes use of the functions in the
* regular USART driver (see \ref Group_Serial), but allows the avr-libc standard stream functions (printf,
* puts, etc.) to work with the USART. Upon configuration, this will redirect the standard input and output
* streams to the USART.
*
* Serial stream driver for the USART subsystem on supported USB AVRs. This makes use of the functions in the
* regular USART driver (see \ref Group_Serial), but allows the avr-libc standard stream functions (printf,
* puts, etc.) to work with the USART. Upon configuration, this will redirect the standard input and output
* streams to the USART.
*