Introduction - If you have any usage issues, please Google them yourself
USART1 Settings: baud rate: 9600
Data bits: 8
Stop bits: 1
Parity: no
Hardware flow control: no
Note: compile time, Library Configuration elected for FULL, in order to make C Library function fputc mapped to the function can be compiled USART through.
S input from a serial port (uppercase letter S), into the time set mode,