本代码未经本人许可不得用于商业用途，一经发现，按一人民币一个字符（包含空格和标点）收取费用。一旦你使用了本代码，默认你已经阅读并接受该声明
This code may not be used for commercial purposes without my permission. Once found, it is charged at a rate of ￥1 (including spaces and punctuation). Once you have used this code, by default you have read and accepted the statement.
SHT20温湿度传感器驱动代码，Linux系统，I2C接口