gpio_get_out_level() function

Determine whether a GPIO is currently driven high or low This function returns the high/low output level most recently assigned to a GPIO via gpio_put() or similar. This is the value that is presented outward to the IO muxing, *not* the input level back from the pad (which can be read using gpio_get()). To avoid races, this function must not be used for read-modify-write sequences when driving GPIOs -- instead functions like gpio_put() should be used to atomically update GPIOs. This accessor is intended for debug use only.