Questions after following along with M0 Book

Hi,

Running through code from a Book on the Cortex M0 by Yui. The code works for most of the
examples with no problem. But I have a few questions.

1.) Looking at any of the RTX task examples they work correctly except I would
like to see the events in the Event Viewer that is provided during Debug. I am using
a ULINK2 but have not figured out how to get it to work. How to configure it so
that the event viewer will work.

2.) There is a example of Dial controller which is something about using two
Light sensors and a wheel that I guess casts a shadow with a light coming through
as a line. So as the wheel is revolving you can determine with the sensor the speed
of motion. The book does not describe how to build this circuit even though
there is conceptual picture.

Thanks Gary