cbit.c

c语言写的哦,里面还带有整点报时音乐,音乐程序很简单

volatile unsigned int *Port;

void SET_Bit(unsigned int *Port,unsigned int bits)
{
*Port|=bits;
}

void CLR_Bit(unsigned int *Port,unsigned int bits)
{
*Port&=~bits;
}

void CPL_Bit(unsigned int *Port,unsigned int bits)
{
*Port^=bits;
}