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 
34 typedef enum {
35  BMP180_ULTRALOWPOWER = 0,
36  BMP180_STANDARD,
37  BMP180_HIGHRES,
38  BMP180_ULTRAHIGHRES
40 
44 typedef struct {
45  int16_t ac1;
46  int16_t ac2;
47  int16_t ac3;
48  int16_t b1;
49  int16_t b2;
50  int16_t mb;
51  int16_t mc;
52  int16_t md;
53  uint16_t ac4;
54  uint16_t ac5;
55  uint16_t ac6;
57 
61 typedef struct {
63  uint8_t i2c_addr;
64  bmp180_oversampling_mode_t oversampling;
66 
70 typedef struct {
73 } bmp180_t;
74 
78 enum {
79  BMP180_OK = 0,
83 };
84 
96 int bmp180_init(bmp180_t *dev, const bmp180_params_t *params);
97 
105 int16_t bmp180_read_temperature(const bmp180_t *dev);
106 
114 uint32_t bmp180_read_pressure(const bmp180_t *dev);
115 
124 int16_t bmp180_altitude(const bmp180_t *dev, uint32_t pressure_0);
125 
134 uint32_t bmp180_sealevel_pressure(const bmp180_t *dev, int16_t altitude);
135 
136 #ifdef __cplusplus
137 }
138 #endif
139 
140 #endif /* BMP180_H */
141 
int16_t md
md coefficient
Definition: bmp180.h:52
int16_t b1
b1 coefficient
Definition: bmp180.h:48
int16_t bmp180_altitude(const bmp180_t *dev, uint32_t pressure_0)
Compute altitude, returned in m.
everything was fine
Definition: bmp180.h:79
int16_t ac3
ac3 coefficient
Definition: bmp180.h:47
unsigned int i2c_t
Default i2c_t type definition.
Definition: i2c.h:108
Device initialization parameters.
Definition: bmp180.h:61
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:46
bmp180_params_t params
Device initialization parameters.
Definition: bmp180.h:71
Device descriptor for the BMP180 sensor.
Definition: bmp180.h:70
error when reading calibration values
Definition: bmp180.h:82
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:55
uint8_t i2c_addr
I2C address.
Definition: bmp180.h:63
did not detect BMP180
Definition: bmp180.h:81
bmp180_oversampling_mode_t
Oversampling modes.
Definition: bmp180.h:34
int16_t mc
mc coefficient
Definition: bmp180.h:51
bmp180_calibration_t calibration
Device calibration.
Definition: bmp180.h:72
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:54
int16_t ac1
ac1 coefficient
Definition: bmp180.h:45
int bmp180_init(bmp180_t *dev, const bmp180_params_t *params)
Initialize the given BMP180 device.
error initializing the I2C bus
Definition: bmp180.h:80
int16_t mb
mb coefficient
Definition: bmp180.h:50
int16_t b2
b2 coefficient
Definition: bmp180.h:49
i2c_t i2c_dev
I2C device which is used.
Definition: bmp180.h:62
Calibration struct for the BMP180 sensor.
Definition: bmp180.h:44
bmp180_oversampling_mode_t oversampling
Oversampling mode.
Definition: bmp180.h:64
uint16_t ac4
ac4 coefficient
Definition: bmp180.h:53
Low-level I2C peripheral driver interface definition.