You can program anything without an OS. Here's an article on writing C targeting bare-metal Raspberry Pi. http://www.valvers.com/open-software/raspberry-pi/st

You can program anything without an OS. Here's an article on writing C targeting bare-metal Raspberry Pi. http://www.valvers.com/open-software/raspberry-pi/step01-bare-metal-programming-in-cpt1/ http://www.valvers.com/open-software/raspberry-pi/step01-bar...