Hi!
I read trough this thread and find it very very helpful!
At the moment i am trying to measure times between signal-flanks. Therefore i need to stop the time between two (external)interrupts. I'd like to do this with a timer - but don't need the timer interrupt.
As far as i can see the actual time is hold in the TC_CV register. How do i get this value?
I saw you make a lot of use of functions like pmc_set_write_protect and others. Where do you get the documentation of these functions from? And why do you know they even exist? 
Thanks a lot!