I have a write only register in my circuit design to control some LEDs and
chip selects. I have code that maps the address using mmap_device_memory()
and writes to the register. I maintain a copy of the written value as its
write only. The chip selects will be accessed from drivers but the LEDs will
be accessed from the applicaiton level. What would be the correct framework
to add this functionality to my QNX image? For example do I need to make a
small driver application that starts with the other drivers, how then would
I access it from other processes?