gpio: get file handle if none exists
-rw-r--r-- 77 .gitignore
-rw-r--r-- 322 CMakeLists.txt
-rw-r--r-- 1060 COPYING
-rw-r--r-- 1307 README
drwxr-xr-x - api
drwxr-xr-x - examples
drwxr-xr-x - include
drwxr-xr-x - src
drwxr-xr-x - tests