// gpioclx.h

typedef enum _GPIO_CONNECT_IO_PINS_MODE {
  ConnectModeInvalid,
  ConnectModeInput,
  ConnectModeOutput,
  ConnectModeMaximum
} GPIO_CONNECT_IO_PINS_MODE, *PGPIO_CONNECT_IO_PINS_MODE;
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Windows Driver Kit DDI reference (ne-gpioclx-_gpio_connect_io_pins_mode)

_GPIO_CONNECT_IO_PINS_MODE enumeration

Description

The GPIO_CONNECT_IO_PINS_MODE enumeration indicates whether a set of general-purpose I/O (GPIO) pins is configured as inputs or outputs.

Constants

`ConnectModeInvalid`

The connection mode (input or output) for this set of GPIO pins is uninitialized.

`ConnectModeInput`

This set of GPIO pins is configured as data inputs.

`ConnectModeOutput`

This set of GPIO pins is configured as data outputs.

`ConnectModeMaximum`

The maximum value in the enumeration.

Remarks

The ConnectMode member of the GPIO_CONNECT_IO_PINS_PARAMETERS structure contains a GPIO_CONNECT_IO_PINS_MODE enumeration constant.

The ConnectModeInput enumeration constant labels a set of GPIO pins that can be read by an IOCTL_GPIO_READ_PINS request. ConnectModeOutput labels a set of GPIO pins that can be written to by an IOCTL_GPIO_WRITE_PINS request.

GPIO_CONNECT_IO_PINS_MODE - NtDoc