On Sun, Feb 23, 2014 at 03:40:58PM +0100, Emanuel Koczwara wrote: > W dniu 18.02.2014 10:36, Johan Hovold pisze: > > On Sun, Feb 16, 2014 at 12:35:06PM +0100, Emanuel Koczwara wrote: > >> I have just one problem with that device. This is typical response from > >> the printer: > >> > >> 1#X0;0;0;1;1;1;14;02;05/23.00/08.00/00.00/05.00/17/0.00/0.001`/0.00/0.00/0.00/284.00/BCM11034990 > >> > >> and this "1`" inside is strange, so I investigated further: > >> > >> emanuel@emanuel-laptop:~$ cat /dev/ttyUSB0 > >> 1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`1`^C > >> > >> What can I do with that? Is it becouse the generic driver? > > Not likely. What happens if you open the device using a terminal program > > such as minicom? > > Using minicom I get the same constant stream of data. Perhaps the printer is sending some status bytes that we shouldn't pass to user space. Could you provide a log from when you send a command and get a response while running with debugging enabled? You can enable debugging with echo "module usbserial +p" >/sys/kernel/debug/dynamic_debug/control Thanks, Johan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
