stm32下实现adc 16通道检测代码例子，已经测试可以检测正确了-adc 16 under stm32 channel detection code examples have been tested can detect the correct

可视电话系统中门口机，主要与中继器之间通信，控制门锁，门铃，密码等相关的功能-Video phone system, door machine, mainly for communication between repeaters, control door locks, door bell, password and other related functions