I did some tests and comparisons between my new Cortex-M implementation and the existing lm3s6965evb and netduino2 boards, and it seems the stm32f205 does not enable the SysTick device, since my simple seconds counting application hangs.
exactly the same application works properly on lm3s6965evb and on my stm32f* boards. Alistair, do you remember doing any SysTick tests on your netduino2 board? is SysTick currently not implemented or am I doing something wrong? regards, Liviu