atmega64的程序：

兩個(gè)文件，一個(gè)是將函數(shù)模塊化，別一個(gè)是主函數(shù)，調(diào)用（- -！最近習(xí)慣將程序模塊化。。。）

//------------------uart.c---------------------

//----這里將通信函數(shù)模塊化------------

#include iom64v.h>

void uart0_init(void)
{
UCSR0B = 0x00; //disable while setting baud rate
UCSR0A = 0x00;
UCSR0C = 0x06;
UBRR0L = 0x33; //set baud rate lo
UBRR0H = 0x00; //set baud rate hi
UCSR0B = 0x18;
}

void uart0_Transmit( unsigned char data )
{
/* Wait for empty transmit buffer */
while ( !( UCSR0A (1UDRE0)) )
;
/* Copy ninth bit to TXB8 */
UCSR0B = ~(1TXB80);
//if ( data 0x0100 )
//UCSR0B |= (1TXB80);
/* Put data into buffer, sends the data */
UDR0 = data;
}

unsigned char uart0_Receive( void )
{
/* 等待接收數(shù)據(jù)*/
while ( !(UCSR0A (1RXC0)) )
;
/* 從緩沖器中獲取并返回?cái)?shù)據(jù)*/
return UDR0;
}

//--------------main.c-----------

//--------------------------------

#include iom64v.h>
#include spi.h
#define commun_symbol 0x31

//-----------send a commun_symbol-----
//-----------receive a commun_symbol--
// --no,continue receive||||||yes-->receive the data and send
void main()
{
unsigned char bybuff;
DDRB=0xff;
PORTB=0xff;
uart0_init();
{

do
{
bybuff=uart0_Receive();
}
while (bybuff!=commun_symbol);//commun_symbol);
while(1)
{

uart0_Transmit(bybuff);
bybuff=uart0_Receive();
PORTB=(0xff|bybuff);
}
}
}

ok,任務(wù)完成了,改天實(shí)驗(yàn)一下!