▍1. adc1_pa6_pa7_usart_stm32
利用stm32的adc1,实现规则转换,检测通道pa6和pa7的电压值,并把他们的值放在数组中。串口显示数据方便调试。(Use stm32 the adc1, implement rules conversion, detection channel pa6 and pa7 voltage value, and put their values in an array. Serial display data to facilitate debugging.)