Brief serial communication problem

The commonly used communication mode when using a single-chip microcomputer is serial communication. The upper computer is used to realize the real-time dynamic acquisition of the status of the single-chip microcomputer. The communication between them can be realized by serial communication. When using serial communication, first pay attention to the baud rate of the communication. Consistent, secondly, the communication interface level should be the same. Finally, the port of the host computer should be selected, and the baud rate setting should be reasonably configured according to the hardware reference clock. Configure high bit rate. Commonly used serial port modes are RS232 and RS485. for reference only!