Class driver for USB printers
Note:
You must be logged in as
root and start a USB stack
(see
io-usb)
before you start this driver.
Syntax:
devu-prn [-m size] [-n name] [-s stack] [-v] [-w secs] &
Options:
- -m size
- Specify the size, in bytes, of the maximum output buffer used to write data to the USB stack.
The default is 4096 bytes.
Larger values may be limited by the I/O buffer limits of the USB chipset you're using.
- -n name
- Set the device name. The default is /dev/usbpar0.
- -s stack
- Set the USB stack name. The default is /dev/io-usb/io-usb.
- -v
- Be verbose.
- -w secs
- Wait up to the indicated number of seconds for
/dev/stack to appear.
This is useful at boot time for slow-resetting devices. The default is 60 seconds.
Description:
The devu-prn class driver manages USB printers.
Note:
This manager terminates only upon receipt of a signal or
on encountering a problem during startup (e.g., it can't locate the USB stack).
See
devu-ehci.so,
devu-ohci.so,
devu-uhci.so,
or
devu-xhci.so
for information on USB stacks.
For more information on setting up USB printers, see
Connecting Hardware
and
Printing
in the QNX Neutrino User's Guide.
Examples:
Start devu-prn with a maximum output buffer of 8192 bytes:
devu-prn -m 8192 &