呵呵,这样应该可以
#include <AT89X51.h>
sbit p1_0 =P1^0;
sbit p1_1 =P1^1;
void main(void)
{
unsigned int a;
unsigned char b;
do
{
p1_0 = 0;
for (a=0;a<65535;a++)
p1_0 = 1;
for (a=0;a<30000;a++) ;
p1_1 = 0;
for (b=0;b<255;b++)
p1_1 = 1;
for (a=0;a<30000;a++) ;
}while(1);
}
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