带有 Hantek6022BE 的 Windows7 上的 PyVisa-Py 未列出任何设备

编程问答 2022-05-30

问题描述

我的目标是：在 Win7-PC 上使用 Python 读出 Hantek6022BE USB 示波器，我的 IDE 是 PyCharm。 PC 示波器：http://hantek.com/products/detail/31 该设备已被 PC 正确识别，来自设备管理器的片段： [设备管理器中的 Hantek][1] 我也可以使用 Hantek 提供的软件：转到下载部分，见上面的链接。

我遵循了这些教程： https://pyvisa.readthedocs.io/en/1.8/getting_nivisa.html#getting-nivisa https://hackaday.com/2016/11/16/how-to-control-your-instruments-from-a-computer-its-easier-than-you-think/ http://techforcurious.website/how-to-save-data-from-oscilloscope-using-python-in-linux/

相关主题： https://github.com/pyvisa/pyvisa/issues/453 https://github.com/pyvisa/pyvisa-py/issues/256

我已经安装了这些软件包： [已安装的软件包][2] 签证 PyVisa-py gpib-ctypes pyusb pyserial 运行 python -m visa info 给我以下反馈： 

(venv) C:\Users\User\PycharmProjects\pythonProject>python -m visa info
C:\Users\User\PycharmProjects\pythonProject\venv\lib\site-packages\visa.py:13: FutureWarning: The visa module provided by PyVISA is being deprecated. You can replace `import visa` by `import pyvisa as visa` to achieve the same effect.

The reason for the deprecation is the possible conflict with the visa package provided by the https://github.com/visa-sdk/visa-python which can result in hard to debug situations.
  warnings.warn(
C:\Users\User\PycharmProjects\pythonProject\venv\lib\site-packages\gpib_ctypes\gpib\gpib.py:54: UserWarning: GPIB library not found. Please manually load it using _load_lib(filename). All GPIB functions will raise OSError until the lib
rary is manually loaded.
  warnings.warn(message)
Machine Details:
   Platform ID:    Windows-7-6.1.7601-SP1
   Processor:      Intel64 Family 6 Model 58 Stepping 9,GenuineIntel

Python:
   Implementation: cpython
   Executable:     C:\Users\User\PycharmProjects\pythonProject\venv\Scripts\python.exe
   Version:        3.8.6
   Compiler:       MSC v.1927 64 bit (AMD64)
   Bits:           64bit
   Build:          Sep 23 2020 15:52:53 (#tags/v3.8.6:db45529)
   Unicode:        UCS4

PyVISA Version: 1.11.3

Backends:
   ivi:
      Version: 1.11.3 (bundled with PyVISA)
      Binary library: Not found
   py:
      Version: 0.5.1
      ASRL INSTR: Available via PySerial (3.5)
      USB INSTR:
         PyUSB does not seem to be properly installed.
         Please refer to PyUSB documentation and
         install a suitable backend like
         libusb 0.1,libusb 1.0,libusbx,libusb-win32 or OpenUSB.
         No backend available
      USB RAW:
         PyUSB does not seem to be properly installed.
         Please refer to PyUSB documentation and
         install a suitable backend like
         libusb 0.1,libusb-win32 or OpenUSB.
         No backend available
      TCPIP INSTR: Available
      TCPIP SOCKET: Available

正如此处 pyvisa 页面上的建议，我尝试安装适当的后端，因为信息输出引发了一些错误。安装时间相对较长，大约 40 分钟。

安装后，找到后端：

(venv) C:\Users\User\PycharmProjects\pythonProject>python -m visa info
C:\Users\User\PycharmProjects\pythonProject\venv\lib\site-packages\visa.py:13: FutureWarning: The visa module provided by PyVISA is being deprecated. You can replace `import visa` by `import pyvisa as visa` to achieve the same effect.

The reason for the deprecation is the possible conflict with the visa package provided by the https://github.com/visa-sdk/visa-python which can result in hard to debug situations.
  warnings.warn(
C:\Users\User\PycharmProjects\pythonProject\venv\lib\site-packages\gpib_ctypes\gpib\gpib.py:54: UserWarning: GPIB library not found. Please manually load it using _load_lib(filename). All GPIB functions will raise OSError until the lib
rary is manually loaded.
  warnings.warn(message)
Machine Details:
   Platform ID:    Windows-7-6.1.7601-SP1
   Processor:      Intel64 Family 6 Model 58 Stepping 9,GenuineIntel

Python:
   Implementation: cpython
   Executable:     C:\Users\User\PycharmProjects\pythonProject\venv\Scripts\python.exe
   Version:        3.8.6
   Compiler:       MSC v.1927 64 bit (AMD64)
   Bits:           64bit
   Build:          Sep 23 2020 15:52:53 (#tags/v3.8.6:db45529)
   Unicode:        UCS4

PyVISA Version: 1.11.3

Backends:
   ivi:
      Version: 1.11.3 (bundled with PyVISA)
      #1: C:\Windows\system32\visa32.dll:
         found by: auto
         bitness: 64
         vendor: National Instruments
         Impl. Version: National Instruments
         Spec. Version: National Instruments
      #2: C:\Windows\system32\visa64.dll:
         found by: auto
         bitness: 64
         vendor: National Instruments
         Impl. Version: National Instruments
         Spec. Version: National Instruments
   py:
      Version: 0.5.1
      ASRL INSTR: Available via PySerial (3.5)
      USB INSTR:
         PyUSB does not seem to be properly installed.
         Please refer to PyUSB documentation and
         install a suitable backend like
         libusb 0.1,libusb-win32 or OpenUSB.
         No backend available
      TCPIP INSTR: Available
      TCPIP SOCKET: Available

但我仍然看不到 PC 示波器。 编辑：我测试了以下代码：

import pyvisa as visa
rm = visa.ResourceManager()
rm.list_resources()
print(rm.list_resources())

OUTPUT:
C:\Users\User\PycharmProjects\pythonProject\venv\Scripts\python.exe C:/Users/User/PycharmProjects/pythonProject/visatest.py
('ASRL1::INSTR',)

Process finished with exit code 0

谢谢！ [1]：https://i.stack.imgur.com/fm3HE.png [2]：https://i.stack.imgur.com/dUcjh.png

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