While minding my own business and innocently trying out 'example' programs, I had 'processor expert' pop up in one of the IDE's I was
This has probably reconfigured internal GPIO assignments that control power/reset modes.
End of day, K53N512 tower board is bricked. The nice people at P + E Micro will gladly sell me (400 usd) a jlinkish debugger
and a mini app that prompts you to power up/down the board, and attempts to halt before the 'dangerous' area, and let you erase the flash.
Hey Freescale - isn't there an easier way to erase the flash and start again non-brick mode?