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dev/gpioa HIGHALARM

Hi all,

I have been trying to write a C program so that the etrax board will notify
the operator everytime the input of the general IO port goes high. Does
anyone here got any idea how to do that please?

To read the input over and over again is easy, simply use ioctl with
READBITS command. I tried to replace the command with HIGHALARM but

Many thanks in advance.