I hope that I can judge wheter the screen is release or not through read the value of interval timer.
But I read control register 1 several times, I found the value that I read is the value that I set.
Can I read the value of interval timer when it is counting?
Moved to Precision ADCs.
Unfortunately you cannot read the value of the internal timer while is couting. You can know when the screen is touched through the PENIRQ pin.