dio.c File Reference

flink userspace library, subdevice function "digital I/O". More...

#include "flinklib.h"
#include "types.h"
#include "error.h"
#include "log.h"
#include <stdint.h>

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Functions
int	flink_dio_set_direction (flink_subdev *subdev, uint32_t channel, uint8_t output)
	Configures a channel as input or output. More...
int	flink_dio_set_value (flink_subdev *subdev, uint32_t channel, uint8_t value)
	Sets a output channel to a value. More...
int	flink_dio_get_value (flink_subdev *subdev, uint32_t channel, uint8_t *value)
	Reads an input channel. More...

Detailed Description

flink userspace library, subdevice function "digital I/O".

Contains the high-level functions for a flink subdevice which realizes the function "digital I/O".

Author

Martin Züger

Definition in file dio.c.

Function Documentation

int flink_dio_get_value	(	flink_subdev *	subdev,
		uint32_t	channel,
		uint8_t *	value
	)

Reads an input channel.

Parameters

subdev	Subdevice containing the channel.
channel	Channel number.
value	Contains a value of nonzero if the input is set.

Returns

int: 0 on success, -1 in case of failure.

Definition at line 93 of file dio.c.

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int flink_dio_set_direction	(	flink_subdev *	subdev,
		uint32_t	channel,
		uint8_t	output
	)

Configures a channel as input or output.

Parameters

subdev	Subdevice containing the channel.
channel	Channel number.
output	Value, a value of nonzero configures the channel as output.

Returns

int: 0 on success, -1 in case of failure.

Definition at line 38 of file dio.c.

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int flink_dio_set_value	(	flink_subdev *	subdev,
		uint32_t	channel,
		uint8_t	value
	)

Sets a output channel to a value.

Parameters

subdev	Subdevice containing the channel.
channel	Channel number.
output	A value of nonzero sets the channel.

Returns

int: 0 on success, -1 in case of failure.

Definition at line 64 of file dio.c.

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