import serial
import time

try:
    # 配置串口参数 - 请根据实际设备修改端口号
    ser = serial.Serial(
        port='COM27',  # 修改为实际的端口号
        baudrate=115200,
        parity=serial.PARITY_NONE,
        stopbits=serial.STOPBITS_ONE,
        bytesize=serial.EIGHTBITS,
        timeout=1  # 添加超时设置，避免程序卡死
    )

    if ser.is_open:
        print(f"成功打开串口: {ser.port}")

        # 发送数据
        data = "Hello, Serial!"
        ser.write(data.encode('utf-8'))
        print(f"发送数据: {data}")

        time.sleep(1)
        ser.close()
        print("串口已关闭")

except serial.SerialException as e:
    print(f"串口错误: {e}")
except Exception as e:
    print(f"发生错误: {e}")