usart.c

AVR单片机的C语言源程序,AVR与SED1520(12232LCD)的驱动程序,可实现时钟液晶显示

#define USART_C
#include "iom32.h"
//#define "includes.h"
void usart_putchar(char c)
{
	if(c=='\n')
		usart_putchar('/r');
	while(UCSRA&(1<<5));
	UDR=c;
}

void init_usart(void)
{
	//USART initialization
	//Communication Parameters:8 Data, 1 Stop, No Parity
	//USART Receiver: 0ff
	//USART Transmitter: On
	//USART Mode: Asynchronous
	//USART Baud rate: 19200
	UCSRA=0x00;
	UCSRB=0x08;
	UCSRC=0x86;
	UCSRH=0x00;
	UCSRL=0x0C;
}