单片机Day10

对向流水

#include <REGX51.H>

typedef unsigned int u16;

typedef unsigned char u8;

#define led P2

void delay_10us(u16 t)

{

while(t--);

}

void main()

{

while(1)

{

P2=0x7e;

delay_10us(50000);

P2=0xbd;

delay_10us(50000);

P2=0xdb;

delay_10us(50000);

P2=0xe7;

delay_10us(50000);

P2=0xdb;

delay_10us(50000);

P2=0xbd;

delay_10us(50000);

}

}