usart.h

一个通过串口与51通信的AVR的程序,还有一些其实功能

void USART_int();
void USART_send_dat(unsigned char *dat,unsigned char lng);
void USART_rev();
void USART_send_c(unsigned char c);

extern unsigned char USART_dat_send[13];
extern volatile unsigned char USART_dat_rev[11];
extern unsigned char *USART_dat;
extern unsigned char USART_dat_sended;
extern volatile unsigned char USART_dat_reved;