Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2194 | - | 1 | /* |
| 2 | bmp085 lib 0x01 |
||
| 3 | |||
| 4 | copyright (c) Davide Gironi, 2012 |
||
| 5 | |||
| 6 | Released under GPLv3. |
||
| 7 | Please refer to LICENSE file for licensing information. |
||
| 8 | |||
| 9 | References: |
||
| 10 | - this library is a porting of the bmp085driver 0.4 ardunio library |
||
| 11 | http://code.google.com/p/bmp085driver/ |
||
| 12 | |||
| 13 | Notes: |
||
| 14 | - to compile with avrgcc you may define -lm flag for some math functions |
||
| 15 | */ |
||
| 16 | |||
| 17 | |||
| 18 | #ifndef BMP085_H_ |
||
| 19 | #define BMP085_H_ |
||
| 20 | |||
| 21 | #include <stdio.h> |
||
| 22 | #include <avr/io.h> |
||
| 23 | |||
| 24 | #define BMP085_ADDR (0x77<<1) //0x77 default I2C address |
||
| 25 | |||
| 26 | #define BMP085_I2CFLEURYPATH "i2cmaster.h" //define the path to i2c fleury lib |
||
| 27 | #define BMP085_I2CINIT 1 //init i2c |
||
| 28 | |||
| 29 | //registers |
||
| 30 | #define BMP085_REGAC1 0xAA |
||
| 31 | #define BMP085_REGAC2 0xAC |
||
| 32 | #define BMP085_REGAC3 0xAE |
||
| 33 | #define BMP085_REGAC4 0xB0 |
||
| 34 | #define BMP085_REGAC5 0xB2 |
||
| 35 | #define BMP085_REGAC6 0xB4 |
||
| 36 | #define BMP085_REGB1 0xB6 |
||
| 37 | #define BMP085_REGB2 0xB8 |
||
| 38 | #define BMP085_REGMB 0xBA |
||
| 39 | #define BMP085_REGMC 0xBC |
||
| 40 | #define BMP085_REGMD 0xBE |
||
| 41 | #define BMP085_REGCONTROL 0xF4 //control |
||
| 42 | #define BMP085_REGCONTROLOUTPUT 0xF6 //output 0xF6=MSB, 0xF7=LSB, 0xF8=XLSB |
||
| 43 | #define BMP085_REGREADTEMPERATURE 0x2E //read temperature |
||
| 44 | #define BMP085_REGREADPRESSURE 0x34 //read pressure |
||
| 45 | |||
| 46 | //modes |
||
| 47 | #define BMP085_MODEULTRALOWPOWER 0 //oversampling=0, internalsamples=1, maxconvtimepressure=4.5ms, avgcurrent=3uA, RMSnoise_hPA=0.06, RMSnoise_m=0.5 |
||
| 48 | #define BMP085_MODESTANDARD 1 //oversampling=1, internalsamples=2, maxconvtimepressure=7.5ms, avgcurrent=5uA, RMSnoise_hPA=0.05, RMSnoise_m=0.4 |
||
| 49 | #define BMP085_MODEHIGHRES 2 //oversampling=2, internalsamples=4, maxconvtimepressure=13.5ms, avgcurrent=7uA, RMSnoise_hPA=0.04, RMSnoise_m=0.3 |
||
| 50 | #define BMP085_MODEULTRAHIGHRES 3 //oversampling=3, internalsamples=8, maxconvtimepressure=25.5ms, avgcurrent=12uA, RMSnoise_hPA=0.03, RMSnoise_m=0.25 |
||
| 51 | |||
| 52 | //autoupdate temperature enabled |
||
| 53 | #define BMP085_AUTOUPDATETEMP 1 //autoupdate temperature every read |
||
| 54 | |||
| 55 | //setup parameters |
||
| 56 | #define BMP085_MODE BMP085_MODEULTRAHIGHRES //define a mode |
||
| 57 | #define BMP085_UNITPAOFFSET 0 //define a unit offset (pa) |
||
| 58 | #define BMP085_UNITMOFFSET 0 //define a unit offset (m) |
||
| 59 | |||
| 60 | //avarage filter |
||
| 61 | #define BMP085_FILTERPRESSURE 1 //avarage filter for pressure |
||
| 62 | |||
| 63 | //variables |
||
| 64 | int bmp085_regac1, bmp085_regac2, bmp085_regac3, bmp085_regb1, bmp085_regb2, bmp085_regmb, bmp085_regmc, bmp085_regmd; |
||
| 65 | unsigned int bmp085_regac4, bmp085_regac5, bmp085_regac6; |
||
| 66 | long bmp085_rawtemperature, bmp085_rawpressure; |
||
| 67 | |||
| 68 | //functions |
||
| 69 | extern void bmp085_init(); |
||
| 70 | extern int32_t bmp085_getpressure(); |
||
| 71 | extern double bmp085_getaltitude(); |
||
| 72 | extern double bmp085_gettemperature(); |
||
| 73 | |||
| 74 | #endif |