DS18B20是一款十分常用的一个温度传感器， 由于其时序很复杂对于初学者来说编写其驱动程序可能会有点困难，故本人把自己收藏的这个芯片上传给大家-DS18B20 is a very commonly used as a temperature sensor, because of its timing is very complicated for the beginner to prepare its drivers may be difficult, so I have to own t