uart.c

AVR单片机专用的操作系统AVRX

#include "includes.h"

void SendChar(char c)//发送一个字符
{
	while(!(UCSR0A & (1<<UDRE0)));
	UDR0=c;
}

void SendString(char *str)//发送字符串
{
	unsigned int i=0;
	while(str[i]!='\0')
	{
		while(!(UCSR0A & (1<<UDRE0)));
		UDR0=str[i]; 
		i++;
	}
} 	

char GetChar(void)           //接收一个字符                 
{
	while(!(UCSR0A & (1<<RXC1)));
	return UDR0;
}