$48000800 constant GPIOC_CTL
$48000804 constant GPIOC_OMODE
$48000808 constant GPIOC_OSPD
$4800080C constant GPIOC_PUD
$48000810 constant GPIOC_ISTAT
$48000814 constant GPIOC_OCTL
$48000818 constant GPIOC_BOP
$4800081C constant GPIOC_LOCK
$48000820 constant GPIOC_AFSEL0
$48000824 constant GPIOC_AFSEL1
$48000828 constant GPIOC_BC
$4800082C constant GPIOC_TG
