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-   -   Accessing parport device (/dev/parport0) in multiple application (http://www.linuxquestions.org/questions/linux-software-2/accessing-parport-device-dev-parport0-in-multiple-application-4175431062/)

gitanshu 10-08-2012 01:47 AM

Accessing parport device (/dev/parport0) in multiple application
 
Dear All,

I am trying to open and access /dev/parport0 using open and ioctl calls my program works fine for one application.

But when i run the second instance of same program it blocks in open. even if i use O_RDONLY| O_NONBLOCK | O_NOCTTY flags with open it blocks.

is parallel port acess possible in exclusive mode only.?

Any help is greatly appreciated.

Thanks in advance.
Gitanshu

gitanshu 10-08-2012 07:56 AM

No reply yet. :-(


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