Hi Jason,
Attach KDS_3.0 + KSDK_1.3 new project that uses PE for FRDM-K64F.
The project has a bunch of example stuff (using FTM's for PWM, GPIO, multiple tasks) to it but I setup flexTimer3:fsl_ftm component as a timer. The overflow ISR is in Event.c and the start/stop/read timer code is in os_tasks.c Task1_task();
Two locations in the Task1_task() are provided for the test but only enable one #define at a time. The first will return counter result with FTM3 no ever having overflowed.
The second location uses the FTM3 and returns variable timer result as it is dependent on user input.
Regards,
David