?? app.c
字號:
#include "avr/io.h"
#include "avr/interrupt.h"
/* FCPU : 8M */
/* Function : When transmit the data receive */
#define BAUD 38400
#define UBRR (F_CPU/16/BAUD-1)
void UART_Init(void)
{
UCSRA = 0x00;
UCSRB = (1<<RXCIE)|(1<<RXEN)|(1<<TXEN);
UCSRC = (1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);
UBRRH = UBRR>>8;
UBRRL = UBRR&0xFF;
DDRD |= (1<<PD1)|(0<<PD0);
PORTD|= (1<<PD1)|(1<<PD0);
}
void UART_PutChar(char c)
{
while(!(UCSRA&(1<<UDRE)));
UDR = c;
}
ISR( SIG_UART_RECV )
{
unsigned char data;
while(!(UCSRA&(1<<RXC)));
data=UDR;
UART_PutChar(data);
}
int main(void)
{
UART_Init();
sei();
while(1)
{
;
}
return 0;
}
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