Writing a string using USART Print

For Writing a string using USART Print, our code will perform the following opertions.

Disabling the watchdog.
Executing the loop for sending the required message to the peripheral device at interval of 2 seconds.
Print function to transmit string through USART.

All these steps are implemented in just few lines of code.

pub fn main() {
   
    let watchdog = unsafe { WatchDog::new() };
    watchdog.disable();

    loop {
        println_string("Hello World !!!");

        rustduino::delay::delay_ms(2000);
    }
}