bmp180.h
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1 /*
2  * Copyright (C) 2016 Inria
3  *
4  * This file is subject to the terms and conditions of the GNU Lesser
5  * General Public License v2.1. See the file LICENSE in the top level
6  * directory for more details.
7  */
8 
21 #ifndef BMP180_H
22 #define BMP180_H
23 
24 #include "saul.h"
25 #include "periph/i2c.h"
26 
27 #ifdef __cplusplus
28 extern "C" {
29 #endif
30 
35 typedef enum {
36  BMP180_ULTRALOWPOWER = 0,
37  BMP180_STANDARD,
38  BMP180_HIGHRES,
39  BMP180_ULTRAHIGHRES
40 } bmp180_oversampling_mode_t;
46 typedef struct {
47  int16_t ac1;
48  int16_t ac2;
49  int16_t ac3;
50  int16_t b1;
51  int16_t b2;
52  int16_t mb;
53  int16_t mc;
54  int16_t md;
55  uint16_t ac4;
56  uint16_t ac5;
57  uint16_t ac6;
59 
63 typedef struct {
65  uint8_t i2c_addr;
66  bmp180_oversampling_mode_t oversampling;
68 
72 typedef struct {
75 } bmp180_t;
76 
80 enum {
81  BMP180_OK = 0,
85 };
86 
98 int bmp180_init(bmp180_t *dev, const bmp180_params_t *params);
99 
107 int16_t bmp180_read_temperature(const bmp180_t *dev);
108 
116 uint32_t bmp180_read_pressure(const bmp180_t *dev);
117 
126 int16_t bmp180_altitude(const bmp180_t *dev, uint32_t pressure_0);
127 
136 uint32_t bmp180_sealevel_pressure(const bmp180_t *dev, int16_t altitude);
137 
138 #ifdef __cplusplus
139 }
140 #endif
141 
142 #endif /* BMP180_H */
143 
int16_t md
md coefficient
Definition: bmp180.h:54
int16_t b1
b1 coefficient
Definition: bmp180.h:50
int16_t bmp180_altitude(const bmp180_t *dev, uint32_t pressure_0)
Compute altitude, returned in m.
int16_t ac3
ac3 coefficient
Definition: bmp180.h:49
unsigned int i2c_t
Default i2c_t type definition.
Definition: i2c.h:113
Device initialization parameters.
Definition: bmp180.h:63
int16_t bmp180_read_temperature(const bmp180_t *dev)
Read temperature value from the given BMP180 device, returned in d°C.
int16_t ac2
ac2 coefficient
Definition: bmp180.h:48
bmp180_params_t params
Device initialization parameters.
Definition: bmp180.h:73
Device descriptor for the BMP180 sensor.
Definition: bmp180.h:72
uint32_t bmp180_read_pressure(const bmp180_t *dev)
Read pressure value from the given BMP180 device, returned in Pa.
Definition of the generic [S]ensor [A]ctuator [U]ber [L]ayer.
uint16_t ac6
ac6 coefficient
Definition: bmp180.h:57
uint8_t i2c_addr
I2C address.
Definition: bmp180.h:65
error initializing the I2C bus
Definition: bmp180.h:82
int16_t mc
mc coefficient
Definition: bmp180.h:53
bmp180_calibration_t calibration
Device calibration.
Definition: bmp180.h:74
uint32_t bmp180_sealevel_pressure(const bmp180_t *dev, int16_t altitude)
Compute pressure at sea level, returned in Pa.
uint16_t ac5
ac5 coefficient
Definition: bmp180.h:56
int16_t ac1
ac1 coefficient
Definition: bmp180.h:47
everything was fine
Definition: bmp180.h:81
did not detect BMP180
Definition: bmp180.h:83
int bmp180_init(bmp180_t *dev, const bmp180_params_t *params)
Initialize the given BMP180 device.
int16_t mb
mb coefficient
Definition: bmp180.h:52
int16_t b2
b2 coefficient
Definition: bmp180.h:51
i2c_t i2c_dev
I2C device which is used.
Definition: bmp180.h:64
Calibration struct for the BMP180 sensor.
Definition: bmp180.h:46
bmp180_oversampling_mode_t oversampling
Oversampling mode.
Definition: bmp180.h:66
error when reading calibration values
Definition: bmp180.h:84
uint16_t ac4
ac4 coefficient
Definition: bmp180.h:55
Low-level I2C peripheral driver interface definition.