用独立按键控制led闪耀，大神看看这编程要怎么修改
#include <reg51.h>typedef unsigned char u8;
typedef unsigned int u16;
sbitk1=P3^1;
sbitk2=P3^0;
sbitled=P2^2;
u8 start=0;
void delay(u16 i)
{
while(i--);
}
void ledduan()
{
while(1)
{
led=0;
delay(5000);
led=1;
delay(5000);
}
}
void keyplay()
{
if(k1==0)
{
delay(100);
if(k1==0)
{
start=1;
}
while(!k1);
}
if(k2==0)
{
delay(100);
if(k2==0)
{
start=0;
}
while(!k2);
}
}
void main()
{
while(1)
{ keyplay();
if(start==1)
{
ledduan();
}
else
{
led=1;
}
}
}
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