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net: lwm2m: fix float32/64 handling

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During the initial work on LwM2M, the float32/64 code was
basically stubbed out.  Float32 sent only whole values and
float64 was completely broken.

Let's clean up the OMA TLV formatting code by moving the float
processing code into a separate file: lwm2m_util.c.

Then using public definitions for binary32 and binary64, let's
fix the processing code to correctly fill the float32_value_t
and float64_value_t types.

Signed-off-by: Michael Scott <mike@foundries.io>
This commit is contained in:
Michael Scott 2019-02-08 10:00:00 -08:00 • committed by Anas Nashif
commit d53a0855a1
5 changed files with 380 additions and 89 deletions
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20
subsys/net/lib/lwm2m/lwm2m_util.h Normal file
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/*
* Copyright (c) 2018-2019 Foundries.io
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef LWM2M_UTIL_H_
#define LWM2M_UTIL_H_
#include <net/lwm2m.h>
/* convert float struct to binary format */
int lwm2m_f32_to_b32(float32_value_t *f32, u8_t *b32, size_t len);
int lwm2m_f64_to_b64(float64_value_t *f64, u8_t *b64, size_t len);
/* convert binary format to float struct */
int lwm2m_b32_to_f32(u8_t *b32, size_t len, float32_value_t *f32);
int lwm2m_b64_to_f64(u8_t *b64, size_t len, float64_value_t *f64);
#endif /* LWM2M_UTIL_H_ */