ALL=low
GPIO Output Register. Each bit controls the GPIO_OUT setting for one pin in the associated port. This register can be written either directly, or by using the GPIO_OUT_SET and GPIO_OUT_CLR registers.
ALL | Mask of all of the pins on the port. 0 (low): Drive Logic 0 (low) on GPIO output. 1 (high): Drive logic 1 (high) on GPIO output. |