macos - Pyusb - Errno 13 Access denied for Control Transfer - Mac OS X

Question

我正在尝试通过 pyusb 在 Mac OS 上发送控制传输命令：dev.ctrl_transfer(0x21,0x09,0x0200,0x0,0x1)

我得到错误：

Traceback (most recent call last):
  File "./main.py", line 21, in <module>
    dev.ctrl_transfer(0x21,0x09,0x0200,0x0000,0x0001)
  File "/Library/Python/2.7/site-packages/usb/core.py", line 962, in ctrl_transfer
    self._ctx.managed_claim_interface(self, interface_number)
  File "/Library/Python/2.7/site-packages/usb/core.py", line 146, in managed_claim_interface
    self.backend.claim_interface(self.handle, i)
  File "/Library/Python/2.7/site-packages/usb/backend/libusb1.py", line 747, in claim_interface
    _check(self.lib.libusb_claim_interface(dev_handle.handle, intf))
  File "/Library/Python/2.7/site-packages/usb/backend/libusb1.py", line 552, in _check
    raise USBError(_strerror(ret), ret, _libusb_errno[ret])
usb.core.USBError: [Errno 13] Access denied (insufficient permissions)

有人可以帮我弄这个吗。我试过sudo，su。我也在 pyusb github 用户组中发布了这个。我得到了这个（将自己添加到 debian 系统中的 plugdev 组）作为可能的解决方案，但我不确定如何继续使用 Mac OS https://github.com/braiden/python-ant-downloader/issues/30# issuecomment-55293142

与以下问题相关：

pyusb 无法访问 OUT 端点

PyUSB dev.set_configuration()（解决方案适用于 ubuntu）