sensors_control_device_t Struct Reference

Every device data structure must begin with hw_device_t followed by module specific public methods and attributes. More...

Data Fields
int(*	activate )(struct sensors_control_device_t *dev, int handle, int enabled)
	Activate/deactivate one sensor.
struct hw_device_t	common
native_handle_t *(*	open_data_source )(struct sensors_control_device_t *dev)
	Returns a native_handle_t, which will be the parameter to sensors_data_device_t::open_data().
int(*	set_delay )(struct sensors_control_device_t *dev, int32_t ms)
	Set the delay between sensor events in ms.
int(*	wake )(struct sensors_control_device_t *dev)
	Causes sensors_data_device_t.poll() to return -EWOULDBLOCK immediately.

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Detailed Description

Every device data structure must begin with hw_device_t followed by module specific public methods and attributes.

Definition at line 278 of file sensors.h.

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Field Documentation

int(* sensors_control_device_t::activate)(struct sensors_control_device_t *dev, int handle, int enabled)

Activate/deactivate one sensor.

Parameters:

	handle	is the handle of the sensor to change.
	enabled	set to 1 to enable, or 0 to disable the sensor.

Returns:

0 on success, negative errno code otherwise

struct hw_device_t sensors_control_device_t::common [read]

Definition at line 279 of file sensors.h.

native_handle_t*(* sensors_control_device_t::open_data_source)(struct sensors_control_device_t *dev)

Returns a native_handle_t, which will be the parameter to sensors_data_device_t::open_data().

The caller takes ownership of this handle. This is intended to be passed cross processes.

Returns:

a native_handle_t if successful, NULL on error

int(* sensors_control_device_t::set_delay)(struct sensors_control_device_t *dev, int32_t ms)

Set the delay between sensor events in ms.

Returns:

0 if successful, < 0 on error

int(* sensors_control_device_t::wake)(struct sensors_control_device_t *dev)

Causes sensors_data_device_t.poll() to return -EWOULDBLOCK immediately.