Hitachi CE50-10, Instruction Manual

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No. Error message Description
2 usbctl: device is not found. The GPIO driver has not started or the device file for accessing
the driver cannot be opened.
3 usbctl: I/O error. A hardware access error is detected.
4 usbctl: usbctl library error.
(errno=
XX
)
An error other than above is detected in the
usbctl
library.
XX : Relevant error number
5 Illegal port number. The
port
argument is specified incorrectly.
<Examples>
•
-p
option
The following example shows how to run the command to check the state of USB port number 2. This
example shows that the device is disconnected from port 2.
$ sudo usbctl -p 2
Port#2 : Disconnect
The following example shows how to run the command to check the states of all USB ports. This example
shows that devices are connected to all ports.
$ sudo usbctl -p all
Port#1 : Connect
Port#2 : Connect
•
-c
option
The following example shows how to run the command to connect a device to USB port number 1.
$ sudo usbctl -p 1 -c
The following example shows how to run the command to connect devices to all USB ports (USB port
number 1 and USB port number 2).
$ sudo usbctl -p all -c
•
-d
option
The following example shows how to run the command to disconnect the device from USB port number 2.
$ sudo usbctl -p 2 -d
5. Configuring Software Environment
126