给段代码你参考下
#include <iom16v.h>
#include <macros.h>
#define uchar unsigned char
#define uint unsigned int
#pragma data:code
const table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,
0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delay(uint ms)
{
uint i,j;
for(i=0;i<ms;i++)
{
for(j=0;j<1141;j++);
}
}
void main()
{
uchar i;
DDRA|=BIT(3);
DDRA|=BIT(4);
DDRB=0XFF;
while(1)
{
for(i=1;i<7;i++)
{
PORTA|=BIT(3);
PORTB=table[i];
PORTA&=~BIT(3);
PORTB=0XFF;
PORTB&=~BIT(i-1);
PORTA|=BIT(4);
PORTA&=~BIT(4);
delay(1);
}
}
} |