GPIO output enable
GPIO_OE | Set output enable (1/0 -> output/input) for GPIO0…29. Reading back gives the last value written. If core 0 and core 1 both write to GPIO_OE simultaneously (or to a SET/CLR/XOR alias), the result is as though the write from core 0 took place first, and the write from core 1 was then applied to that intermediate result. |