Re: [pyusb-users] cannot access HID interface on MacOS.

[Xiaofan C. <xia...@gm...>]

On Tue, Sep 7, 2021 at 5:41 PM fishx2000--- via pyusb-users
<pyu...@li...> wrote:
>
> Hi..
>
> When running on MacOS using pyusb, I failed to read/write HID interface.
>
> error message is as follows:
> 'Access denies(insufficient permissions)' error.
>
> and libusb provides more information:
> libusb: error [darwin_claim_interface] USBInterfaceOpen: another process has device opened for exclusive access
>
> after doing some search, it seems there is no way to avoid this issue on MacOS...
> Is there any suggestions about this ?
>

Please use HIDAPI and Cython-hidapi. That is the right library and
Python binding
to use for HID devices (with different transport: USB, Bluetooth, or
even I2C, SPI, etc).
https://github.com/libusb/libusb/wiki/FAQ#Does_libusb_support_USB_HID_devices

-- 
Xiaofan