用WinAVR编写AVR128串行接受中断程序

以下是我自己写的程序，但是进不去中断。/******ATMEGA128单片机串口中断程序******/#include "avr/io.h"#include "avr/interrupt.h"void UART_Init(void);void UART_Send_Byte(unsigned char mydata);void UART_Send_Str(char *s);unsigned char rec=0;#define fosc 16000000 //晶振16MHZ #define baud 9600 //波特率 void main(void){ UART_Init(); UART_Send_Str("串口设置完毕尀r尀n"); while(1) { PORTA=0x10; PORTB=0x10; PORTC=0x10; } } void UART_Init(void) { UCSR0B = 0x00; UCSR0A = 0x00; UCSR0C =(1<<UCSZ01)|(1<<UCSZ00); UBRR0L=(fosc/16/(baud+1))%256; UBRR0H=(fosc/16/(baud+1))/256; UCSR0B =(1<<RXEN0)|(1<<TXEN0)|(1<<RXCIE0);//RXCEN TXCEN}void UART_Send_Byte(unsigned char mydata) { while (!(UCSR0A&(1<<UDRE0))); UDR0=mydata; }/*******发送字符串*******/void UART_Send_Str(char *s){ while(*s) { UART_Send_Byte(*s); s++; }}/**********************************串口0接收中断程序**************************************/ ISR(USART0_RX_vect){ rec=UDR0; UART_Send_Byte(rec);}