h6. [[GPIO]] h6(. » [[GPIO SWI Calls|SWI Calls]] h6((. » GPIO_ReadOE h2. GPIO_ReadOE h5. (SWI &58F82) |_<^. Entry | | |<^. R0 |<^. Logical GPIO pin number | |_<^. Exit | |<. R0 = 0 if pin set as Output, 1 if pin set as Input| h4. Use Reads the "Output Enable" state of the given GPIO pin, or returns an error if the pin number is not valid.