Circuit for solving problem of mutual pulling of double baud rate levels in serial port communication

Circuit for solving problem of mutual pulling of double baud rate levels in serial port communication

The utility model discloses a circuit for solving mutual pulling of double baud rate levels of serial port communication, which comprises an MCU, a J4 serial port circuit and a 485 communication circuit, a serial port USART3RX of the MCU is simultaneously connected with the J4 serial port circuit an...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WU WEIRONG, WANG FEI, HU YEFEN, FAN JIAQUAN, LIU CIHUAN
Format: Patent
Sprache:chi ; eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:The utility model discloses a circuit for solving mutual pulling of double baud rate levels of serial port communication, which comprises an MCU, a J4 serial port circuit and a 485 communication circuit, a serial port USART3RX of the MCU is simultaneously connected with the J4 serial port circuit and the 485 communication circuit, a first diode is arranged between the serial port USART3RX and the J4 serial port circuit, a positive electrode of the first diode is connected with the serial port USART3RX, a negative electrode of the first diode is connected with the J4 serial port circuit, and a negative electrode of the first diode is connected with the 485 communication circuit. A second diode is arranged between the serial port USART3RX and the 485 communication circuit, the positive electrode of the second diode is connected with the serial port USART3RX, and the negative electrode of the second diode is connected with the 485 communication circuit. According to the utility model, a serial port USART3RX adop