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

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