Hi,
I wonder if you can help me. I am new at Linux and I was put in charge of
a task to write printer test software which does not use any installed
drivers. We are doing an embedded project which has a USB module and we are
using it to print out reports, but we don't want to install any drivers
since we won't have the capability to do that. The output to the printer
will be straight ascii text. We are using Knoppix on a laptop to emulate our
embedded device so we can take the laptop to say Staples and try out
printers to see if it will print out the straight ascii text we send it. I
am using the libusb library to write bulk messages out the usb port and I am
using the detach driver function to get rid of any driver linux installed
when the printer is hotplugged to the laptop. I can see that when a printer
is hotplugged it installs something called 'usblp'. Is this a driver? Will
detaching the driver really get rid of this driver? Will the routines I am
using to send out bulk messaging be direct calls to the usb device and
simulate not having a driver installed or is there another layer of the
linux kernel I am missing? I tested 8 printers, and 3 were able to print
out the text I sent it. Thanks for any help
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