串口.c

串口的相关代码,调试正在进行!希望能对大家有些帮助@

#include <iom16v.h>
#include <macros.h>
#define uchar unsigned char
#define uint unsigned int
char Table[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar i=0;
void port_init(void)
{
 PORTA = 0x00;
 DDRA  = 0xFF;
 PORTB = 0x00;
 DDRB  = 0xFF;
 PORTC = 0x00;
 DDRC  = 0xFF;
 PORTD = 0x00;
 DDRD  = 0xFF;
}

void uart0_init(void)
{
 UCSRB = 0x00;
 UCSRA = 0x00;
 UCSRC = BIT(URSEL) | 0x06;//设置传输字节为8位
 UBRRL = 0x33; //设置波特率低位
 UBRRH = 0x00; //设置波特率高位
 UCSRB = 0x18;
}

void init_devices(void)
{
 CLI();
 port_init();
 uart0_init();

 MCUCR = 0x00;
 GICR  = 0x00;
 TIMSK = 0x00;
 SEI();
}


void DelayMs(uint i)
{
 	 uint j;
 	 for(;i!=0;i--)
	 	{
	 	 	for(j=1000;j!=0;j--)
				{;}
		}
			
}

 //usart发送子程序
void usrat_transent(unsigned char x)
{
while(!(UCSRA&0X20))
	{
		;		
	}
	UDR=x;
	while(!(UCSRA&0X40))
	{
		;		
	}
	
}

void main(void)
{
	init_devices();
	 while(1)
	 {

		DelayMs(2000);
		usrat_transent(i++);
		if(i==255)
		{
			i=0;
		}
	 }
}