Read Failed at cupsBackChannelRead
Michael Sweet
msweet at apple.com
Tue Nov 17 23:21:35 PST 2009
Since the USB backend does not support back-channel data on Linux, there is NO WAY for you to do what you want.
On Nov 17, 2009, at 9:53 PM, Zebra wrote:
>
> Hi,
>
>
> I am using USB printer ,whatever i am sending the printer responding,for example i am sending "\033R\r" the printer gets restart,like this i want to send and read the response from printer if back-end doesn't support the back channel means what i should do to read a response even cupsSideChannelRead() and cupsSideChannelWrite() also return -1.for this thing what i should do.
>
> Please Guide me to resolve this
>
> Regards
>
> SivaKumar
>
>
>
>
>
>
>
>
>
>
>> On Nov 17, 2009, at 7:51 PM, Zebra wrote:
>>> ...
>>> I am connecting printer using USB port.
>>
>>
>> On Linux, the USB backend does not support back-channel.
>>
>> ___________________________________________________
>> Michael Sweet, Senior Printing System Engineer
>>
>>
>>
>
> _______________________________________________
> cups-ddk mailing list
> cups-ddk at easysw.com
> http://lists.easysw.com/mailman/listinfo/cups-ddk
___________________________________________________
Michael Sweet, Senior Printing System Engineer
More information about the cups-devel
mailing list