h6. [[GPIO]] h6(. » [[GPIO SWI Calls|SWI Calls]] h6((. » GPIO_WriteEvent h2. GPIO_WriteEvent h5. (SWI &58FAC) |_<^. Entry | | |<^. R0 |<^. Logical GPIO pin number | |<. R1 |<^. 0 (clear event), 1 (set event)| h4. Use Writes the event state of the given GPIO pin, or returns an error if the pin number is not valid.