📄 51
字号:
#include <reg51.h>
char buf;
void time1(void) interrupt 3
{
TR1 = 0;
TL1 = 0xaf;
TH1 = 0x3c;
buf++;
TR1 = 1;
}
void main(void)
{
unsigned char led=1;
TMOD = 0x10;
TL1 = 0xaf;
TH1 = 0x3c;
IE = 0x88;
TR1 = 1;
buf = 0;
P1 = 0xfe;
while(1)
{
if(buf==10)
{
led<<=1;
if(!led) led = 1;
P1 = ~led;
buf = 0;
}
}
}
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