用于下位机与单片机之间通过串口来收发字节。-To lower place machine with single chip microcomputer via a serial port to send and receive bytes.

以STM32 单片机为核心设计了一套智能家居控制系统。该系统通过无线通信、串口通信对系统各部分进行串联，用户可通过门禁密码锁验证身份后进入智能家居系统-A set of intelligent home control system based on STM32 MCU is designed. The system through the wireless communication, serial communication of the various parts of the syste