1、单片机上电后，自动进入参数设置界面 - - - - 通过按键S3切换4个温度采集间隔时间，分别为1秒、5秒、30秒、60秒。

2、按下S4键确定采集时间间隔，并退出设置界面，开始显示温度，显示两位整数即可

-1, single chip on the power, automatically enter the parameter setting interface　 through the button S3 to switch 4 temperature acquisition interval, respectively for 1 second, 5 seconds, 30 seconds, 60 seconds.

2, press the S4 key to determine the acquisition time interval, and exit the settings interface, start to display the temperature, showing the two bit integer