Question

我想知道这个程序哪里用到中断了，里面有#include <avr/interrupt.h>和sei();

#include <avr/io.h> #include <util/delay.h>
#include <avr/interrupt.h>

unsigned char zifu;void Port_Init(void);
void Usart_Init(void);
void Usart_PutChar(unsigned char data);

int main(void)
{
Port_Init();
Usart_Init();

zifu = 0X31;

Usart_PutChar(zifu);

sei();

while(1)
{

}
}

void Port_Init()
{
PORTD = 0X00;
DDRD |= (1 << PD1);
}

void Usart_Init()
{
UCSRA = 0X00;
UCSRC |= (1<<URSEL) | (1 << UCSZ1) | (1 << UCSZ0);

UBRRL = (F_CPU / 9600 / 16 - 1) % 256; UBRRH = (F_CPU / 9600 / 16 - 1) / 256;
UCSRB |= (1 << TXEN);

}

void Usart_PutChar(unsigned char data)
{
while( !(UCSRA & (1 << UDRE)) );
UDR = data;
}

若以下回答无法解决问题，邀请你更新回答

Answer 1

没用中断啊...