这个程序得好理解就是用中断接收把收到的字节在PARTC上显示一下：
在Atmel Studio6.2具体程序如下：
- /*
- * GccApplication18.c
- *
- * Created: 2014-9-10 20:20:00
- * Author: Administrator
- */
- #include <avr/io.h>
- #include <avr/interrupt.h>
- #define uchar unsigned char
- #define uint unsigned int
- #define FE 4
- #define PE 2
- #define DOR 3
- uchar LEDdisp;
- ISR(USART_RXC_vect)//USART串行接收中断
- {
- uchar status,data;
- status=UCSRA;
- data=UDR;
- if((status&((1<<FE)|(1<<PE)|(1<<DOR)))==0)
- {
- LEDdisp=data;
- }
- }
- int main(void)
- {
- DDRC=0xFF;
- PORTC=0xFF;
- DDRD=0xFA;
- PORTD=0xFF;
- UCSRA=0x00;
- UBRRH=0;
- UBRRL=25; //系统时钟8MHz,波特率为9600bps
- UCSRB=0x90;
- UCSRC=0x86;
- while(1)
- {
- PORTC=LEDdisp;
-
- }
- }
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