more changes, event file

echo function in GPIO0 > ctl
echo function out GPIO0 > ctl
echo function 1 GPIO0 > ctl (… 2 3 4 5)
echo event edge-rising enable GPIO0 > ctl
echo event edge-rising disable GPIO0 > ctl
echo event edge-falling enable GPIO0 > ctl
echo pull up GPIO0 > ctl
echo pull down GPIO0 > ctl

cat /dev/gpio/event (returns 4 bytes with bit sets at relevant BCM
input pin position)
only 0-31 irq line is handled

cat /dev/gpio/GPIO0 (returns 1 byte 0 or 1, not a ’0’ ‚’1’ character
anymore)

qio queue alternative implementation commented out