main._c

单片机仿真软件proteus做的一个串口通讯

//ICC-AVR application builder : 2005-9-4 20:55:51
// Target : M16
// Crystal: 8.0000Mhz

#include <iom16v.h>
#include <macros.h>
#include <stdio.h>

void delay_nms(unsigned int n);

//UART0 initialize
// desired baud rate: 9600
// actual: baud rate:9615 (0.2%)
// char size: 8 bit
// parity: Disabled
void uart0_init(void)
{
 UCSRB = 0x00; //disable while setting baud rate
 UCSRA = 0x00;
 UCSRC = (1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);//8位数据+1位STOP位
 UBRRL = 0x33; //set baud rate lo
 UBRRH = 0x00; //set baud rate hi
 UCSRB = (1<<RXEN)|(1<<TXEN);//允许发送和接收
}

void main(void)
{
 unsigned char i;
 uart0_init(); 
 puts("ATmega8 uc/os-II Test!");
 putchar(0x0d);
 putchar(0x0a);
 while(1)
 {
	for(i=0;i<20;i++)
    {  
	  putchar(i+0x30);
	  delay_nms(1000);	
	}
 }
}