전기전자 아무거나 HOTatmega128 UART 통신 공부를 하다가....

#define F_CPU 16000000    //Clock frequency

#include <avr/io.h>

void USART_Init()
{
    unsigned int ubrr = 103; // 9600 for 16MHz
    // Set baud rate
    UBRR0H = (unsigned char)(ubrr>>8);
    UBRR0L = (unsigned char)ubrr;

    // Enable receiver and transmitter
    UCSR0B = (1<<RXEN0)|(1<<TXEN0);
    // Set frame format: 8N1
    UCSR0C = (1<<UCSZ01)|(1<<UCSZ00);
}

void USART_putc( unsigned char data )
{
    // Wait for empty transmit buffer
    while( !( UCSR0A & (1<<UDRE0)) )    ;
    // Put data into buffer, sends the data
    UDR0 = data;
}

unsigned char USART_getc( void )
{
    // Wait for data to be received
    while( !(UCSR0A & (1<<RXC0)) )    ;
    // Get and return received data from buffer
    return UDR0;
}

int main(void)
{
    unsigned char c;
    // Setup USART
    USART_Init();   
    while(1)
    {
        c = USART_getc();
        USART_putc(c);
    }
    return 0;
}



AVRStudio 4 컴파일하고
Tera Term 이용하고 있는데

1을 입력하면 다시 1을 입력받는 코드인데

계속 돌아가지가 않네요.

어느 부분이 잘못됐는지 알수있을까요?