On Wed, Oct 2, 2013 at 4:09 PM, luke.leighton luke.leighton@gmail.com wrote:
well... this is _sort_ of progress... a 1.5k resistor is missing from the USB+ line on the STM32F, which, when added, resulted in the exact same error being created when the exact same software was uploaded to the Port103R demo board.
at this point it can be reasonably concluded that the STM32F software being uploaded to both boards, to get USB working, is shagged. which is odd, because i had it working a few weeks back [on the Port103R].
solved! there's a bug in libopencm3 related to systick
i now have USB working and can start on audio, woo!