owwl_data_ Struct Reference

Structure used to hold a data item. More...

#include <owwl.h>

List of all members.

Public Attributes
int	device_type
device_data_union	device_data
int	device_subtype
int	index
int	in_use
void *	user_data
char *(*	str )(struct owwl_data_ *self, char *buffer, int bufflen, int unit_type, int precision, int arg)
double(*	val )(struct owwl_data_ *self, int unit_type, int arg)

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Detailed Description

Structure used to hold a data item.

Data are stored in an array of "owwl_data". Each item contains a union of data structures for the various data types. Functions to convert data to strings or doubles are provided.

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Member Data Documentation

device_data_union owwl_data_::device_data

A union of all possible device data structures

int owwl_data_::device_subtype

Some devices have sub-types. For example, a temperature might come from a hygrometer

int owwl_data_::device_type

The type of device held in the struct

int owwl_data_::in_use

Is this an up-to-date in-use data item?

int owwl_data_::index

The index value, running from 0, e.g. thermometer 0, &c.

char*(* owwl_data_::str)(struct owwl_data_ *self, char *buffer, int bufflen, int unit_type, int precision, int arg)

Function to convert one arg of the data item to a string, with given unit type and precision

void* owwl_data_::user_data

For unspecified use by user program

double(* owwl_data_::val)(struct owwl_data_ *self, int unit_type, int arg)

Function to convert one arg of the data item to a double, with given unit type

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The documentation for this struct was generated from the following file:

• owwl.h

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