uart通信与编程

串口、com口、uart、TTL、RS232、RS485的区别 串口、com口、uart、TTL、RS232、RS485的区别 典型RS485通讯电路(带隔离) https://blog.csdn.net/zhenxing2000/article/details/50545394/ 图中虚线左侧为单片机的电源网络，右侧为RS485的电源网络，两者通过光耦和双通道数字隔离芯片ADuM1201实现隔离

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