a project to use libopemcm3 to colect data via usb-cdc class or serial
my development is using a STM3210B-EVAL because I have one left over from something else.
http://www.mouser.co.uk/STM3210B/ could use a MAPLE?
as I can't work out submodues have to
git clone https://github.com/libopencm3/libopencm3.git
into/libopencm3
Did think of bare metal serial like
http://gpio.kaltpost.de/?page_id=167
but it was limited as I could not find any good examples for SPI and I2C.