serial.serialutil.SerialException: could not open port 'COM3': PermissionError(13, '拒绝访问。', None, 5)
时间: 2024-06-04 09:06:33 浏览: 11
这个错误通常是由于权限不足导致的,可能是因为正在尝试使用受保护的串行端口。你可以尝试以下几个步骤来解决这个问题:
1. 确保你的串口设备已经正确地插入电脑,并且串口的驱动程序已经正确地安装。
2. 以管理员身份运行你的程序,这样你就可以获得足够的权限来访问串口。
3. 检查一下串口设备是否已经被其他程序占用,如果是的话,你需要先关闭这些程序,然后再尝试打开串口。
4. 如果你使用的是 Linux 操作系统,你需要将当前用户添加到 dialout 用户组中,这样才能够访问串口。
如果你还是无法解决这个问题,你可以提供更多的上下文信息,这样我才能更好地帮助你解决这个问题。
相关问题
serial.serialutil.SerialException: could not open port 'COM5': PermissionError(13, '�ܾ����ʡ�', None, 5)
This error message indicates that the program is unable to open the serial port 'COM5' due to a permission error. The error message contains some non-ASCII characters which may indicate that there is an issue with the encoding of the error message.
The most common cause of this error is that the user running the program does not have permission to access the serial port. This can happen if the user does not have the necessary permissions to access the port or if the port is already in use by another program.
To resolve this error, you can try the following:
1. Make sure that the serial port is not already in use by another program.
2. Check that the user running the program has permission to access the serial port.
3. Try running the program with administrator privileges.
4. Check that the serial port is correctly configured in the program.
5. Try using a different serial port or a different USB port.
If none of these solutions work, you may need to consult the documentation for the device or contact the manufacturer for further assistance.
raise SerialException("could not open port {!r}: {!r}".format(self.portstr, ctypes.WinError())) serial.serialutil.SerialException: could not open port 'COM3': FileNotFoundError(2, '系统找不到指定的文件。', None, 2)
这个错误出现的原因是串口 'COM3' 无法被打开。可能是由于端口号错误、串口被占用或者串口驱动未正确安装等原因导致的。你可以尝试以下解决方案:
1. 确认串口号是否正确,可以在设备管理器中查看串口号;
2. 确认串口是否被占用,可以通过任务管理器或者其他工具查看进程;
3. 确认串口驱动是否正确安装,可以重新安装串口驱动或者更新操作系统。
如果以上方法都无法解决问题,你可以尝试在其他计算机上测试串口是否正常,或者联系串口设备厂家进行进一步的技术支持。