Hitachi CE50-10 Instruction Manual page 142

5. Configuring Software Environment
No.
2 usbctl: device is not found.
3 usbctl: I/O error.
4 usbctl: usbctl library error.
(errno=XX)
5 Illegal port number.
<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
126
Error message Description
The GPIO driver has not started or the device file for accessing
the driver cannot be opened.
A hardware access error is detected.
An error other than above is detected in the usbctl library.
XX: Relevant error number
The port argument is specified incorrectly.