uart.c

GPS模块的相关资料

#include "uart.h"

void putc(unsigned char c)
{
	while (!(UCSRA&(1<<UDRE)));
	UDR=c;
}

unsigned char getchar(void)
{
	while(!(UCSRA& (1<<RXC)));
	return UDR;
}	

void put_string(char *s)
{
	while (*s)
	{
		putc(*s);
		s++;
	}
}
		
void uart_init(void)
{
	UCSRB=(1<<RXEN)|(1<<TXEN)|(1<<RXCIE);//允许发送和接收
	UBRRL=12;
	UBRRH=0;
	UCSRC=(1<<URSEL)|(1<<UCSZ1)|(1<<UCSZ0);//8位数据+1位STOP位
}