In the reference manual of STM32, a serial port is described as universal synchronous asynchronous transceiver (USART), which provides a flexible method and using industry standard NRZ asynchronous serial data format of full-duplex data exchange between external devices. USART using scores baud rate generator provides wide range of baud rate. It supports synchronous one-way communication and half duplex single wire communication, also supports LIN (local Internet), smart card agreement and IrDA infrared data (organization) SIR ENDEC specification, and modems (CTS/RTS) operation. It also allows a multiprocessor communication. You can also use the DMA mode, realize high speed data communication.

STM32 USART.docx

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