The watchdog gets enabled with a 1s timeout on POR, and I don't
want to deal with that.
use common::systick;
use common::port;
use common::gpio;
use common::systick;
use common::port;
use common::gpio;
use common::usb_serial;
type Reg32 = register::Register<u32>;
use common::usb_serial;
type Reg32 = register::Register<u32>;
#[no_mangle]
pub unsafe extern fn main() {
#[no_mangle]
pub unsafe extern fn main() {
clock::configure();
systick::init();
port::init();
clock::configure();
systick::init();
port::init();