UART Console Integration (STM32F401RE)

[AmmarOkla12772]

Description
Implement a basic UART serial console to allow the board to send debug messages and printf outputs back to host computer. This will serve as our primary debugging tool for the rest of the project.

• Configure the USART2 peripheral using PA2/PA3 pins.

• Initialize the UART configuration at a standard baud rate of 115200 (8 data bits, 1 stop bit).

• Redirect standard printf output to send characters over USART2.

• Validate bidirectional communication with a host (Send "Hello World" to host PC serial monitor).