Introduction
This plugin updates integrated Wacom AES and EMR devices. They are typically connected using I²C and not USB.
GUID Generation
The HID DeviceInstanceId values are used, e.g. HIDRAW\VEN_056A&DEV_4875
.
Firmware Format
The daemon will decompress the cabinet archive and extract a firmware blob in Intel HEX file format.
This plugin supports the following protocol ID:
com.wacom.raw
Quirk Use
This plugin uses the following plugin-specific quirks:
WacomI2cFlashBlockSize
Block size to transfer firmware.
Since: 1.2.4
WacomI2cFlashBaseAddr
Base address for firmware.
Since: 1.2.4
WacomI2cFlashSize
Maximum size of the firmware zone.
Since: 1.2.4
Update Behavior
The device usually presents in runtime mode, but on detach re-enumerates with a different HIDRAW PID in a bootloader mode. On attach the device re-enumerates back to the runtime mode.
For this reason the REPLUG_MATCH_GUID
internal device flag is used so that
the bootloader and runtime modes are treated as the same device.
Vendor ID Security
The vendor ID is set from the udev vendor, in this instance set to HIDRAW:0x056A
External Interface Access
This plugin requires ioctl HIDIOCSFEATURE
access.