说明：  avr单片机硬件SPI驱动ADS1118实现了温度和电压的采集，本设计采用的是单次转换，可以自己修改配置指令，改变转换类型
(avr microcontroller hardware SPI driver ADS1118 to achieve a temperature and voltage of the collection, this design uses a single conversion, you can modify your configuration directive to change the type of conversion)