数码管显示

/*
 * tryDigLED.c
 *
 * Created: 2012-7-6 13:26:16
 *  Author: Administrator
 */ 

#include <avr/io.h>
unsigned char const dofly[16]={
0xc0,0xf9,0xa4,0xb0,0x99,
0x92,0x82,0xf8,0x80,0x90,
0x88,0x83,0xc6,0xa1,0x86,0x8e};//7段数码管段码表共阳

	unsigned char num[10]={0x3f,0x06,0x5b,0x4f,0x66,
			 	  		   0x6d,0x7d,0x07,0x7f,0x6f};
//延时1ms
void delay_1ms(void)
{
  unsigned int i;
  for (i=1;i<(unsigned int)(1144-2);i++)
  ;
}

//延时nMS
void delay_ms(unsigned int n)
{
  unsigned int i=0;
  while(i<n)
  {
   		delay_1ms();
		i++;
  }
} 

int main(void)
{
    unsigned char i;
	DDRB=0xFF;//设置D口为输出模式
	PORTB=0xFF;//置高电平
	
	while(1)
	{
	 	for(i=0;i<10;i++)//顺序打开LED
		{
		   PORTB=~num[i];
		   delay_ms(20);
		 }
	 	for(i=0;i<16;i++)//顺序打开LED
		{
		   PORTB= dofly[i];
		   delay_ms(20);
		 }		 
		
		 
	}
}