TX받기 RX보내기

#include <stdio.h> void TX(unsigned char data) { while (!(UCSR1A & (1<<UDRE1))); UDR1 = data; } unsigned char RX(void) { while (!(UCSR1A & (1<<RXC1))); return UDR1; } void USART_Init() { UCSR1A = 0x00; UCSR1B = 0x18; UCSR1C = 0x06; UBRR1H = 0x00; UBRR1L = 103; DDRD = 0xff; } int main() { unsigned char text[10]; unsigned char echo[10]; unsigned char i=0; USART_Init(); while(text[i] != '\0') TX(text[i++]); i=0; while(echo[i] != '\0') TX(echo[i++]); while(1) TX(RX()); return 0; }