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Hi,
I have written a small user space program
that calls iopl(3) successfully, before doing a series of inw and outb
operations to the serial port connected to a swipe card reader.Even thought the equivalent code is working fine in windows,
this code (that I have written for linux) is not getting any response from
the reader.
I am not sure if the outb operations
are successfully sending data and control signals to the reader connected
to the serial port.
Is there something else, I can do, to be sure of
the proper working of the serial port communication? (btw I am not using
interrupts here.)
I would like to know if kernel space code is
a must if I want to use interrupts in my code.
Regards,
Raghudev Ramaiah. |
