Generic data container for physical data interface. More...

Detailed Description

Generic data container for physical data interface.

Author: Hauke Petersen hauke.nosp@m..pet.nosp@m.ersen.nosp@m.@fu-.nosp@m.berli.nosp@m.n.de

Definition in file phydat.h.

#include <stddef.h>
#include <stdint.h>
#include "kernel_defines.h"

Include dependency graph for phydat.h:

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Data Structures
struct	phydat_t
	Generic data structure for expressing physical values. More...

Macros
#define	PHYDAT_DIM (3U)
	The fixed number of dimensions we work with. More...

#define	PHYDAT_SCALE_STR_MAXLEN (sizeof("*E-128\0"))
	The maximum length of a scaling string.

#define	PHYDAT_MIN (INT16_MIN)
	Minimum value for phydat_t::val.

#define	PHYDAT_MAX (INT16_MAX)
	Maximum value for phydat_t::val.

Enumerations
enum	{ UNIT_UNDEF, UNIT_NONE, UNIT_TEMP_C, UNIT_TEMP_F, UNIT_TEMP_K, UNIT_LUX, UNIT_M, UNIT_M2, UNIT_M3, UNIT_G, UNIT_DPS, UNIT_GR, UNIT_A, UNIT_V, UNIT_W, UNIT_GS, UNIT_DBM, UNIT_COULOMB, UNIT_F, UNIT_OHM, UNIT_PH, UNIT_BAR, UNIT_PA, UNIT_CD, UNIT_BOOL, UNIT_CTS, UNIT_PERCENT, UNIT_PERMILL, UNIT_PPM, UNIT_PPB, UNIT_TIME, UNIT_DATE, UNIT_GPM3, UNIT_CPM3 }
	Definition of physical units and comparable data types. More...

Functions
void	phydat_dump (phydat_t *data, uint8_t dim)
	Dump the given data container to STDIO. More...

const char *	phydat_unit_to_str (uint8_t unit)
	Convert the given unit to a string. More...

const char *	phydat_unit_to_str_verbose (uint8_t unit)
	Return a string representation for every unit, including non-physical units like 'none' or 'time'. More...

char	phydat_prefix_from_scale (int8_t scale)
	Convert the given scale factor to an SI prefix. More...

void	phydat_fit (phydat_t dat, const int32_t values, unsigned int dim)
	Scale integer value(s) to fit into a phydat_t. More...

size_t	phydat_to_json (const phydat_t data, size_t dim, char buf)
	Convert the given phydat_t structure into a JSON string. More...

Data Structures