Compiler/TM4C1290NCPDT: How to set up an interrupt timer on the TM4C1290NCPDT

Part Number:TM4C1290NCPDT

Tool/software: TI C/C++ Compiler

All,

I'm trying to set up an interrupt service routine that gets triggered every 2 seconds. On my most processors I have worked, even TI, we could set up an interrupt service routine that does just that, I want to be able to stop, start and restart this interrupt service routine. On the TM4C1290NCPDT, it is not readily apparent to me how to do. There are 7 timers. Timer 1, 2, 3, 4, 7 are already used. When I try to use timer 5, the code somehow hangs. But I believe this should be straightforward, how to set up a timer interrupt.

Any ideas