Canon imageRUNNER ADVANCE C350 series Service Manual page 232

2
Technical Explanation > MEAP > Maintenance > Using USB Devices
Operating mode
Conventional USB
settings [Use MEAP
keyboard enabled MEAP
driver as USB input
application
device]
OFF (*default) Cannot use USB
* Native driver keyboards. (Device cannot
be detected.)
Note:
When any settings changes are made, the device must be restarted.
Setting the USB driver for each USB device (MEAP driver preference registration)
If it is set to use the system driver, the conventional applications that support the MEAP
application driver cannot use the USB input device.
Therefore, for the USB drivers used by USB devices/MEAP applications, there is setting
function (MEAP driver preference registration) to give priority to the MEAP driver.
If you register the ID of the USB device by using this function, the USB device can use the
MEAP driver despite the Additional Function settings.
Using this function requires the conditions below:
• Supported MEAP SpecVer: 26
• Describe the idVendeor(VID) and idProdutc(PID) of USB device in the manifest or activate/
deactivate the VID and PID by calling API from MEAP applications.
The driver setting that is used in a manifest file is reflected in the following timing.
When registering from a manifest file.
• The registration will be enabled when an application is activated and device is
restarted.
• The registration will be disabled when an application is stopped and device is
restarted.
Note:
You can display/check the used driver setting at "USB device report print" described
below regardless of whether it is registered from a manifest file or is registered from
API.
2 Technical Explanation > MEAP > Maintenance > Using USB Devices
Software keyboard
System driver
application
supported MEAP
(System Driver/
application
MEAP Driver)
Can use USB Can use USB
keyboards. keyboards. Via software
keyboards only.
T-2-80
Availability for MEAP application of the USB device A (either HID keyboard or Mass Storage)
plugged to device
When the HID keyboard is
installed > USB Settings:
Registration [Use MEAP Driver for USB
status of Input Device]
USB device When the Mass Storage is
A installed > USB Settings:
[Use MEAP Driver for
External USB Device]
Not OFF
registered
ON
Registered OFF
ON
YES: USB device available NO: USB device not available
Availability for MEAP applications of USB devices B and C (either HID keyboard or Mass
Storage) plugged to device
Setting to use
Registration
MEAP driver
status of USB Native
(Additional
USB device device application
Functions
B
mode)
Registered Not used B YES
(Native driver to
C YES
be used)
To be used B NO
C NO
Not Not used B NO
registered (Native driver to
C YES
be used)
To be used B NO
C NO
YES: USB device available NO: USB device not available
MEAP application
Application
System System driver with VID/
Native
driver not supported/
application
supported conventional declared
application application in Manifest
for x
YES YES NO
NO NO YES
NO NO YES YES
NO NO YES YES
MEAP application
System System driver Application
driver not supported with VID/PID
supported / conventional declared in
application application Manifest for B
YES NO
YES NO
NO YES
NO YES
NO YES YES
YES NO NO
NO YES YES
NO YES YES
2-189
PID
T-2-81
T-2-82
2-189