STM32F1笔记（三）UART/USART
UART：Universal Asynchronous Receiver/Transmitter（通用异步收/发器）USART：Universal Synchronous/Asynchronous Receiver/Transmitter（通用同步/异步串行收/发器）从命名即可看出USART就是UART的基础上添加了同步功能。通常把UART/USART称为串口。串口包含TLL电平...
