pIC單片機TIMER0控制流水燈

#include
__CONFIG(0x3B31);
unsignedcharnum=0,i=0;
voidinit()
{
TRISB=0x00;
TRISC=0x00;

PORTB=0xFE;
PORTC=0xFE;
}
voidTMR0_init()
{
OPTION=0x07;//0有上拉電阻00001111:256分頻
GIE=1;
PEIE=1;
T0IF=0;
TMR0=250;
T0IE=1;
}
voidinterruptTIMER0()
{
T0IF=0;
if(num==5)
{
num=0;
PORTB=(PORTB<<1)"0x01;
PORTC=(PORTC<<1)|0x01;
if(i==7)
{
i=0;
PORTB=0xFE;
PORTC=0xFE;
}
else
{
i++;
}
}
else
{
num++;
}
}
voidmain()
{
init();
TMR0_init();
while(1);
}