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Linux使用python調(diào)用串口<Ubuntu>方式

更新時(shí)間：2026年05月23日 10:56:37 作者：IOT-Power

本文介紹在Ubuntu上使用Python和pyserial庫進(jìn)行串口通信的方法,涵蓋安裝庫、編寫收發(fā)代碼及注意事項(xiàng),適合初學(xué)者入門

步驟 1: 安裝 PySerial

首先確保安裝了 pyserial，這是一個(gè)流行的 Python 庫，用于處理串行通信：

pip install pyserial

步驟 2: 編寫串口收發(fā)代碼

以下是一個(gè)簡單的 Python 腳本，用于打開 /dev/ttyUSB0 串口，配置波特率和其他參數(shù)，然后接收和發(fā)送數(shù)據(jù)。

import serial
import time

def open_serial(port, baud_rate):
    """打開串口并配置基本參數(shù)"""
    try:
        ser = serial.Serial(port, baud_rate, timeout=1,
                            parity=serial.PARITY_NONE,
                            stopbits=serial.STOPBITS_ONE,
                            bytesize=serial.EIGHTBITS)
        if ser.is_open:
            print(f"Serial port {port} opened successfully")
        return ser
    except Exception as e:
        print(f"Failed to open serial port: {e}")
        return None

def read_from_serial(ser):
    """從串口讀取數(shù)據(jù)"""
    try:
        data = ser.readline()  # 讀取一行數(shù)據(jù)
        if data:
            print(f"Received: {data.decode().strip()}")
    except Exception as e:
        print(f"Failed to read data: {e}")

def write_to_serial(ser, data):
    """向串口發(fā)送數(shù)據(jù)"""
    try:
        ser.write(data.encode())
        print(f"Sent: {data}")
    except Exception as e:
        print(f"Failed to send data: {e}")

def main():
    port = "/dev/ttyUSB0"
    baud_rate = 9600

    # 打開串口
    ser = open_serial(port, baud_rate)
    if ser and ser.is_open:
        try:
            # 循環(huán)接收和發(fā)送數(shù)據(jù)
            while True:
                read_from_serial(ser)
                time.sleep(1)
                write_to_serial(ser, "Hello from Python!")
                time.sleep(1)
        finally:
            ser.close()
            print("Serial port closed")

if __name__ == "__main__":
    main()