Writing to USB device with Python using ioctl

[erich]

Using Python, I am trying to write to a USB sensor using ioctl. I have loads of examples of reading from devices either directly or via pyusb, or simple file writes, but anything more complicated disappears off the radar.

I need to use a control_transfer to write Feature Report message

The command is ioctl(devicehandle, Operation, Args) The issue I have is determining the correct Operation. The Args, I believe should be a buffer containing the Feature Report for the device? plus a Mutable flag set to true

Any help or advice would be greatly received

I should add; the reason for using Python is the code must be device independent

[Jan Axelson]

You may need to ask here:

https://lists.sourceforge.net/lists/listinfo/pyusb-users

Jan

[erich]

Thanks - I already did. And on Twitter and Stackoverflow

I just can't get my head around the  initiation of the message.

[Jan Axelson]

Show the source code you have so far.

Jan