upm  1.7.1
Sensor/Actuator repository for libmraa (v2.0.0)
lm35.h
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1 /*
2  * Author: Jon Trulson <jtrulson@ics.com>
3  * Copyright (c) 2016 Intel Corporation.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be
14  * included in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23  */
24 #pragma once
25 
26 #include <stdlib.h>
27 #include <stdio.h>
28 #include <upm.h>
29 #include <mraa/aio.h>
30 
31 #ifdef __cplusplus
32 extern "C" {
33 #endif
34 
46  typedef struct _lm35_context
47  {
48  mraa_aio_context aio;
49 
50  // ADC reference voltage
51  float aref;
52  // ADC resolution
53  float ares;
54 
55  // scale and offset
56  float scale;
57  float offset;
58  } *lm35_context;
59 
66  lm35_context lm35_init(int pin, float aref);
67 
71  void lm35_close(lm35_context dev);
72 
80  upm_result_t lm35_get_temperature(const lm35_context dev,
81  float *temperature);
82 
90  void lm35_set_offset(const lm35_context dev, float offset);
91 
99  void lm35_set_scale(const lm35_context dev, float scale);
100 
101 
102 #ifdef __cplusplus
103 }
104 #endif
lm35_context lm35_init(int pin, float aref)
Definition: lm35.c:29
upm_result_t lm35_get_temperature(const lm35_context dev, float *temperature)
Definition: lm35.c:76
Definition: lm35.h:46
struct _lm35_context * lm35_context
void lm35_set_offset(const lm35_context dev, float offset)
Definition: lm35.c:97
void lm35_close(lm35_context dev)
Definition: lm35.c:66
void lm35_set_scale(const lm35_context dev, float scale)
Definition: lm35.c:104