Question

如何在这个单片机流水灯程序里再加上控制奇数灯亮后偶数灯亮？

#include <reg51.h>#define LED P1void delay(int); main (){unsigned char i; LED=0xfe ; while(1) {for(i=0;i<7;i++) {delay(100); LED=(LED<<1)|0X01; } for (i=0;i<7;i++) {delay(100); LED=(LED>>1)|0x80; } }}void delay (int x){int i,j; for (i=0;i<x;i++) for(j=0;j<=600;j++);}

Answer 1

#include <reg51.h>
#define LED P1
void delay(int);
main()
{
unsigned char i;
LED = 0xfe;
while (1)
{
for (i = 0; i < 7; i++)
{
delay(100);
LED = (LED << 1) | 0X01;
}
for (i = 0; i < 7; i++)
{
delay(100);
LED = (LED >> 1) | 0x80;
}
for (i = 1; i < 7; i += 2)
{
delay(100);
LED = (LED >> 1) | 0x80;
}
for (i = 0; i < 7; i += 2)
{
delay(100);
LED = (LED >> 1) | 0x80;
}
}
}
void delay(int x)
{
int i, j;
for (i = 0; i < x; i++)
for (j = 0; j <= 600; j++)
;
}