I want to port FreeRTOS on LPC4357-EVB board, containing Cortex M4F. I dont have Kiel, I will be using NXP’s LPCXpresso IDE. Will that be possible?
Yes. LPCXpresso uses GCC, so you want to use the port layer files in
the FreeRTOS/Source/portable/GCC/ARM_CM4 directory of the main FreeRTOS
download. There are LPCXPresso demos in the FreeRTOS download, although
they are rather old, but I also suspect that NXP’s MCUXpresso (which
supersedes LPCXpresso) will create a FreeRTOS project for you anyway.