Since we recently switched from -O0 to -Os, an increase in the loop count as well as the addition of __asm__("nop") is required (so that the loop doesn't get optimized/removed). The real fix is to add a proper timer-based delay function, of course. Also, fix a bunch of cosmetic issues and typos.
------------------------------------------------------------------------------ README ------------------------------------------------------------------------------ This is the smallest-possible example program using libopencm3. It's intended for the ST STM32-based Olimex STM32-H103 eval board (see http://olimex.com/dev/stm32-h103.html for details). It should blink the LED on the board.