BCD码转换函数 学习笔记

十进制数转为BCD码

unsigned int num_2_bcd(unsigned int num)
{
	return (((num / 10)<<4) | (num % 10));
}

BCD码转为十进制

unsigned int bcd_2_num(unsigned int bcd)
{
	return (((bcd & 0xf0)>>4)*10 + (bcd & (0x0f)));
}