Hi
I've build a Code to drive K64F Development Board by the FreeRTOS
Its a simple Blue LED blink example.
Check my GitHub - ice0c/K64F.FreeRTOS.Blinky
Build using arm-none-eabi-gcc compiler and load rtos.bin to your board
Enjoy,
ICE
I would suggest the"Getting Started with MCUXpresso SDK and FreeRTOS OS", please refer to the attached document.
Regards
Daniel
Not sure of NXP resources, but the following two pages will help: