barometric pressure sensor BMP085 http://mbed.org/users/okini3939/notebook/barometric-pressure-sensor-bmp085/ http://mbed.org/users/okini3939/notebook/weatherduino-on-mbed/
Fork of BMP085 by
BMP085.h@3:9c7696c84807, 2015-05-25 (annotated)
- Committer:
- whatnick
- Date:
- Mon May 25 02:50:46 2015 +0000
- Revision:
- 3:9c7696c84807
- Parent:
- 2:5e2b1f3c0a6a
Device support
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
okini3939 | 0:6245372b9179 | 1 | /* |
okini3939 | 2:5e2b1f3c0a6a | 2 | * mbed library to use a Bosch Sensortec BMP085/BMP180 sensor |
okini3939 | 0:6245372b9179 | 3 | * Copyright (c) 2010 Hiroshi Suga |
okini3939 | 0:6245372b9179 | 4 | * Released under the MIT License: http://mbed.org/license/mit |
okini3939 | 0:6245372b9179 | 5 | */ |
okini3939 | 0:6245372b9179 | 6 | |
okini3939 | 1:80e4c62baf09 | 7 | /** @file BMP085.h |
okini3939 | 2:5e2b1f3c0a6a | 8 | * @brief mbed library to use a Bosch Sensortec BMP085/BMP180 sensor |
okini3939 | 2:5e2b1f3c0a6a | 9 | * barometric pressure sensor BMP085/BMP180 (Bosch Sensortec) |
okini3939 | 1:80e4c62baf09 | 10 | * interface: I2C digital |
okini3939 | 1:80e4c62baf09 | 11 | */ |
okini3939 | 1:80e4c62baf09 | 12 | |
okini3939 | 0:6245372b9179 | 13 | #ifndef BMP085_H |
okini3939 | 0:6245372b9179 | 14 | #define BMP085_H |
okini3939 | 0:6245372b9179 | 15 | |
okini3939 | 0:6245372b9179 | 16 | #include "mbed.h" |
okini3939 | 0:6245372b9179 | 17 | |
whatnick | 3:9c7696c84807 | 18 | /* |
whatnick | 3:9c7696c84807 | 19 | * @brief Pressure at sea level |
whatnick | 3:9c7696c84807 | 20 | */ |
whatnick | 3:9c7696c84807 | 21 | #define SEA_PRES 1013.25f |
whatnick | 3:9c7696c84807 | 22 | |
okini3939 | 1:80e4c62baf09 | 23 | /** |
okini3939 | 1:80e4c62baf09 | 24 | * @brief over sampling setting |
okini3939 | 1:80e4c62baf09 | 25 | */ |
okini3939 | 0:6245372b9179 | 26 | enum BMP085_oss { |
okini3939 | 1:80e4c62baf09 | 27 | BMP085_oss1 = 0, ///< ultra low power (1 time) |
okini3939 | 1:80e4c62baf09 | 28 | BMP085_oss2 = 1, ///< standard (2 times) |
okini3939 | 1:80e4c62baf09 | 29 | BMP085_oss4 = 2, ///< high resolution (4 times) |
okini3939 | 1:80e4c62baf09 | 30 | BMP085_oss8 = 3 ///< ultra high resolution (8 times) |
okini3939 | 0:6245372b9179 | 31 | }; |
okini3939 | 0:6245372b9179 | 32 | |
okini3939 | 1:80e4c62baf09 | 33 | /** |
okini3939 | 1:80e4c62baf09 | 34 | * @brief BMP085 class |
okini3939 | 1:80e4c62baf09 | 35 | */ |
okini3939 | 2:5e2b1f3c0a6a | 36 | class BMP085 { |
okini3939 | 0:6245372b9179 | 37 | public: |
okini3939 | 0:6245372b9179 | 38 | BMP085(PinName p_sda, PinName p_scl, BMP085_oss p_oss = BMP085_oss1); |
okini3939 | 0:6245372b9179 | 39 | BMP085(I2C& p_i2c, BMP085_oss p_oss = BMP085_oss1); |
okini3939 | 0:6245372b9179 | 40 | |
okini3939 | 0:6245372b9179 | 41 | float get_temperature(); |
okini3939 | 0:6245372b9179 | 42 | float get_pressure(); |
okini3939 | 0:6245372b9179 | 43 | void update(); |
okini3939 | 0:6245372b9179 | 44 | |
okini3939 | 0:6245372b9179 | 45 | protected: |
okini3939 | 0:6245372b9179 | 46 | void init(BMP085_oss); |
okini3939 | 0:6245372b9179 | 47 | unsigned short twi_readshort (int, int); |
okini3939 | 0:6245372b9179 | 48 | unsigned long twi_readlong (int, int); |
okini3939 | 0:6245372b9179 | 49 | void twi_writechar (int, int, int); |
okini3939 | 0:6245372b9179 | 50 | |
okini3939 | 0:6245372b9179 | 51 | I2C i2c; |
okini3939 | 0:6245372b9179 | 52 | float temperature; |
okini3939 | 0:6245372b9179 | 53 | float pressure; |
okini3939 | 0:6245372b9179 | 54 | |
okini3939 | 0:6245372b9179 | 55 | private: |
okini3939 | 0:6245372b9179 | 56 | |
okini3939 | 0:6245372b9179 | 57 | short ac1, ac2, ac3, b1, b2, mb, mc, md, oss; |
okini3939 | 0:6245372b9179 | 58 | unsigned short ac4, ac5, ac6; |
okini3939 | 0:6245372b9179 | 59 | }; |
okini3939 | 0:6245372b9179 | 60 | |
okini3939 | 0:6245372b9179 | 61 | #endif |