Line definitions

These defines are used across the API. More...

Enumerations
enum	gpiod_line_value { GPIOD_LINE_VALUE_ERROR = -1 , GPIOD_LINE_VALUE_INACTIVE = 0 , GPIOD_LINE_VALUE_ACTIVE = 1 }
	Logical line state. More...
enum	gpiod_line_direction { GPIOD_LINE_DIRECTION_AS_IS = 1 , GPIOD_LINE_DIRECTION_INPUT , GPIOD_LINE_DIRECTION_OUTPUT }
	Direction settings. More...
enum	gpiod_line_edge { GPIOD_LINE_EDGE_NONE = 1 , GPIOD_LINE_EDGE_RISING , GPIOD_LINE_EDGE_FALLING , GPIOD_LINE_EDGE_BOTH }
	Edge detection settings. More...
enum	gpiod_line_bias {   GPIOD_LINE_BIAS_AS_IS = 1 , GPIOD_LINE_BIAS_UNKNOWN , GPIOD_LINE_BIAS_DISABLED , GPIOD_LINE_BIAS_PULL_UP ,   GPIOD_LINE_BIAS_PULL_DOWN }
	Internal bias settings. More...
enum	gpiod_line_drive { GPIOD_LINE_DRIVE_PUSH_PULL = 1 , GPIOD_LINE_DRIVE_OPEN_DRAIN , GPIOD_LINE_DRIVE_OPEN_SOURCE }
	Drive settings. More...
enum	gpiod_line_clock { GPIOD_LINE_CLOCK_MONOTONIC = 1 , GPIOD_LINE_CLOCK_REALTIME , GPIOD_LINE_CLOCK_HTE }
	Clock settings. More...

Detailed Description

These defines are used across the API.

Enumeration Type Documentation

gpiod_line_bias

enum gpiod_line_bias

Internal bias settings.

Enumerator
GPIOD_LINE_BIAS_AS_IS	Don't change the bias setting when applying line config.
GPIOD_LINE_BIAS_UNKNOWN	The internal bias state is unknown.
GPIOD_LINE_BIAS_DISABLED	The internal bias is disabled.
GPIOD_LINE_BIAS_PULL_UP	The internal pull-up bias is enabled.
GPIOD_LINE_BIAS_PULL_DOWN	The internal pull-down bias is enabled.

Definition at line 384 of file gpiod.h.

gpiod_line_clock

enum gpiod_line_clock

Clock settings.

Enumerator
GPIOD_LINE_CLOCK_MONOTONIC	Line uses the monotonic clock for edge event timestamps.
GPIOD_LINE_CLOCK_REALTIME	Line uses the realtime clock for edge event timestamps.
GPIOD_LINE_CLOCK_HTE	Line uses the hardware timestamp engine for event timestamps.

Definition at line 412 of file gpiod.h.

gpiod_line_direction

enum gpiod_line_direction

Direction settings.

Enumerator
GPIOD_LINE_DIRECTION_AS_IS	Request the line(s), but don't change direction.
GPIOD_LINE_DIRECTION_INPUT	Direction is input - for reading the value of an externally driven GPIO line.
GPIOD_LINE_DIRECTION_OUTPUT	Direction is output - for driving the GPIO line.

Definition at line 357 of file gpiod.h.

gpiod_line_drive

enum gpiod_line_drive

Drive settings.

Enumerator
GPIOD_LINE_DRIVE_PUSH_PULL	Drive setting is push-pull.
GPIOD_LINE_DRIVE_OPEN_DRAIN	Line output is open-drain.
GPIOD_LINE_DRIVE_OPEN_SOURCE	Line output is open-source.

Definition at line 400 of file gpiod.h.

gpiod_line_edge

enum gpiod_line_edge

Edge detection settings.

Enumerator
GPIOD_LINE_EDGE_NONE	Line edge detection is disabled.
GPIOD_LINE_EDGE_RISING	Line detects rising edge events.
GPIOD_LINE_EDGE_FALLING	Line detects falling edge events.
GPIOD_LINE_EDGE_BOTH	Line detects both rising and falling edge events.

Definition at line 370 of file gpiod.h.

gpiod_line_value

enum gpiod_line_value

Logical line state.

Enumerator
GPIOD_LINE_VALUE_ERROR	Returned to indicate an error when reading the value.
GPIOD_LINE_VALUE_INACTIVE	Line is logically inactive.
GPIOD_LINE_VALUE_ACTIVE	Line is logically active.

Definition at line 345 of file gpiod.h.