hughsie unifying: Do not hold hidraw devices open forever
Just close the file descriptor if open when the device is removed.

Fixes #429
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data Add support for Logitech Unifying devices Dec 12, 2016
README.md unifying: Refactor the plugin now we have some more information about… Apr 12, 2017
fu-plugin-unifying.c Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-common.c unifying: Hide raw communication behind the plugin verbose option Aug 12, 2018
lu-common.h Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-context.c Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-context.h Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-device-bootloader-nordic.c unifying: Allow flashing devices in recovery mode Aug 13, 2018
lu-device-bootloader-nordic.h Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-device-bootloader-texas.c unifying: Allow flashing devices in recovery mode Aug 13, 2018
lu-device-bootloader-texas.h Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-device-bootloader.c unifying: Set a display name on the bootloader device Aug 10, 2018
lu-device-bootloader.h Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-device-peripheral.c unifying: Allow flashing devices in recovery mode Aug 13, 2018
lu-device-peripheral.h Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-device-runtime.c unifying: Set a display name on the bootloader device Aug 10, 2018
lu-device-runtime.h Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-device.c unifying: Do not hold hidraw devices open forever Aug 13, 2018
lu-device.h Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-hidpp-msg.c Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-hidpp-msg.h Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-hidpp.h Remove the unused Emacs indenting headers from all source files Aug 9, 2018
lu-self-test.c Remove the unused Emacs indenting headers from all source files Aug 9, 2018
meson.build trivial: Remove the Unifying noinst tool May 18, 2018

README.md

Unifying Support

Introduction

This plugin can flash the firmware on Logitech Unifying dongles, both the Nordic (U0007) device and the Texas Instruments (U0008) version.

This plugin will not work with the different "Nano" dongle (U0010) as it does not use the Unifying protocol.

Some bootloader protocol infomation was taken from the Mousejack[1] project, specifically logitech-usb-restore.py and unifying.py. Other documentation was supplied by Logitech.

Additional constants were taken from the Solaar[2] project.

Design Notes

When a dongle is detected in bootloader mode we detach the hidraw driver from the kernel and use raw control transfers. This ensures that we don't accidentally corrupt the uploading firmware. For application firmware we use hidraw which means the hardware keeps working while probing, and also allows us to detect paired devices.

Verification

If you do not have Unifying hardware you can emulate writing firmware using:

unifying-tool write file.hex -v --emulate=bootloader-nordic

This can also be used to produce protocol data to the command line to compare against USB dumps. This plugin should interact with the hardware exactly like the Logitech-provided flashing tool, although only a few devices have been tested.

[1] https://www.mousejack.com/ [2] https://pwr.github.io/Solaar/