I created a generic C project for an LPC810 chip - not an evaluation board or kit - using the Cortex M0+ architecture. I included some CMSIS files that I'd found on github (https://github.com/microbuilder/LPC810_CodeBase/tree/master/src). After creating a simple LED blinker program and flashing it via FlashMagic, then a reset - removing the programming pin - it does nothing.
I noticed in the Problems tab that it says "Unused declaration of function 'main'" - see attachment - which doesn't sound like good thing, if C programs start from main(). I renamed main() to __main(), since redlib is enabled by default, and flashed the updated binary: no difference - it still doesn't operate as expected.
To confirm that the chip isn't broken, I flashed a binary that blinks pin P0.2 and that seems to work as expected, so the problem doesn't seem to be with my chip or FlashMagic.
I do have LPCXpresso 7.4 installed and could use that, but MCUXpresso should work, too, right? Am I overlooking something?
