Frequency counting via the parallel port interrupt, based on RTAI

I've made a Linux +RTAI driver for counting frequencies/pulses via the parallel port interrupt up to 270 kHz (old PC with P III 1GHz).
RTAI is an open source Kernel patch for hard realtime: www.rtai.org.

README

frequency_counter0.c

user_frequency_counter0.c

Makefile

start.sh

stop.sh


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