Joel Pallent / BMP280

sensor

Dependents:   enviro_copy

BMP280.h@8:d22ecbef9b90, 2017-05-25 (annotated)

Committer:
charly
Date:
Thu May 25 20:22:32 2017 +0000
Revision:
8:d22ecbef9b90
Parent:
7:c72b726c7dc9
Child:
9:e267adc73ab2
Buxfix in readTemperature

Who changed what in which revision?

UserRevisionLine numberNew contents of line
MACRUM 1:763a4018aaec 1 /**
MACRUM 1:763a4018aaec 2 * BME280 Combined humidity and pressure sensor library
MACRUM 1:763a4018aaec 3 *
MACRUM 1:763a4018aaec 4 * @author Toyomasa Watarai
MACRUM 1:763a4018aaec 5 * @version 1.0
MACRUM 1:763a4018aaec 6 * @date 06-April-2015
MACRUM 1:763a4018aaec 7 *
MACRUM 1:763a4018aaec 8 * Library for "BME280 temperature, humidity and pressure sensor module" from Switch Science
MACRUM 1:763a4018aaec 9 * https://www.switch-science.com/catalog/2236/
MACRUM 1:763a4018aaec 10 *
MACRUM 1:763a4018aaec 11 * For more information about the BME280:
takafuminaka 4:ddcaa259e65b 12 * http://ae-bst.resource.bosch.com/media/products/dokumente/bme280/BST-BME280_DS001-10.pdf
MACRUM 1:763a4018aaec 13 */
MACRUM 1:763a4018aaec 14
12104404 5:7139d5accbc3 15 #ifndef MBED_BMP280_H
12104404 5:7139d5accbc3 16 #define MBED_BMP280_H
MACRUM 0:ade9be832910 17
MACRUM 0:ade9be832910 18 #include "mbed.h"
MACRUM 0:ade9be832910 19
MACRUM 0:ade9be832910 20 //#define _DEBUG
charly 8:d22ecbef9b90 21 // default address with SDO High 0x77
charly 8:d22ecbef9b90 22 // address with SDO LOW 0x76
charly 8:d22ecbef9b90 23 #define DEFAULT_SLAVE_ADDRESS (0x77)
MACRUM 0:ade9be832910 24
MACRUM 0:ade9be832910 25 #ifdef _DEBUG
MACRUM 0:ade9be832910 26 extern Serial pc;
MACRUM 0:ade9be832910 27 #define DEBUG_PRINT(...) pc.printf(__VA_ARGS__)
MACRUM 0:ade9be832910 28 #else
MACRUM 0:ade9be832910 29 #define DEBUG_PRINT(...)
MACRUM 0:ade9be832910 30 #endif
MACRUM 0:ade9be832910 31
MACRUM 0:ade9be832910 32
MACRUM 0:ade9be832910 33 /** BME280 class
MACRUM 0:ade9be832910 34 *
charly 8:d22ecbef9b90 35 * BME280: A library to read environmental data using Bosch BME280 device
charly 8:d22ecbef9b90 36 * Readds temperature and pressure
MACRUM 0:ade9be832910 37 *
MACRUM 0:ade9be832910 38 * BME280 is an environmental sensor
MACRUM 0:ade9be832910 39 * @endcode
MACRUM 0:ade9be832910 40 */
MACRUM 0:ade9be832910 41
12104404 7:c72b726c7dc9 42 class BMP280
MACRUM 0:ade9be832910 43 {
MACRUM 0:ade9be832910 44 public:
MACRUM 0:ade9be832910 45
MACRUM 0:ade9be832910 46 /** Create a BME280 instance
MACRUM 0:ade9be832910 47 * which is connected to specified I2C pins with specified address
MACRUM 0:ade9be832910 48 *
MACRUM 0:ade9be832910 49 * @param sda I2C-bus SDA pin
MACRUM 0:ade9be832910 50 * @param scl I2C-bus SCL pin
charly 8:d22ecbef9b90 51 * @param slave_adr (option) I2C-bus address (default: 0x77)
MACRUM 0:ade9be832910 52 */
12104404 7:c72b726c7dc9 53 BMP280(PinName sda, PinName sck, char slave_adr = DEFAULT_SLAVE_ADDRESS);
MACRUM 0:ade9be832910 54
MACRUM 0:ade9be832910 55 /** Create a BME280 instance
MACRUM 0:ade9be832910 56 * which is connected to specified I2C pins with specified address
MACRUM 0:ade9be832910 57 *
MACRUM 0:ade9be832910 58 * @param i2c_obj I2C object (instance)
charly 8:d22ecbef9b90 59 * @param slave_adr (option) I2C-bus address (default: 0x77)
MACRUM 0:ade9be832910 60 */
12104404 7:c72b726c7dc9 61 BMP280(I2C &i2c_obj, char slave_adr = DEFAULT_SLAVE_ADDRESS);
MACRUM 0:ade9be832910 62
MACRUM 0:ade9be832910 63 /** Destructor of BME280
MACRUM 0:ade9be832910 64 */
12104404 7:c72b726c7dc9 65 virtual ~BMP280();
MACRUM 0:ade9be832910 66
MACRUM 0:ade9be832910 67 /** Initializa BME280 sensor
MACRUM 0:ade9be832910 68 *
MACRUM 0:ade9be832910 69 * Configure sensor setting and read parameters for calibration
MACRUM 0:ade9be832910 70 *
MACRUM 0:ade9be832910 71 */
MACRUM 0:ade9be832910 72 void initialize(void);
MACRUM 0:ade9be832910 73
MACRUM 0:ade9be832910 74 /** Read the current temperature value (degree Celsius) from BME280 sensor
MACRUM 0:ade9be832910 75 *
MACRUM 0:ade9be832910 76 */
MACRUM 0:ade9be832910 77 float getTemperature(void);
MACRUM 0:ade9be832910 78
MACRUM 0:ade9be832910 79 /** Read the current pressure value (hectopascal)from BME280 sensor
MACRUM 0:ade9be832910 80 *
MACRUM 0:ade9be832910 81 */
MACRUM 0:ade9be832910 82 float getPressure(void);
MACRUM 0:ade9be832910 83
MACRUM 0:ade9be832910 84 /** Read the current humidity value (humidity %) from BME280 sensor
MACRUM 0:ade9be832910 85 *
MACRUM 0:ade9be832910 86 */
12104404 6:d03826fe1062 87 // float getHumidity(void);
MACRUM 0:ade9be832910 88
MACRUM 0:ade9be832910 89 private:
MACRUM 0:ade9be832910 90
MACRUM 0:ade9be832910 91 I2C *i2c_p;
MACRUM 0:ade9be832910 92 I2C &i2c;
MACRUM 0:ade9be832910 93 char address;
MACRUM 0:ade9be832910 94 uint16_t dig_T1;
MACRUM 0:ade9be832910 95 int16_t dig_T2, dig_T3;
MACRUM 0:ade9be832910 96 uint16_t dig_P1;
MACRUM 0:ade9be832910 97 int16_t dig_P2, dig_P3, dig_P4, dig_P5, dig_P6, dig_P7, dig_P8, dig_P9;
MACRUM 0:ade9be832910 98 uint16_t dig_H1, dig_H3;
MACRUM 0:ade9be832910 99 int16_t dig_H2, dig_H4, dig_H5, dig_H6;
MACRUM 0:ade9be832910 100 int32_t t_fine;
MACRUM 0:ade9be832910 101
MACRUM 0:ade9be832910 102 };
MACRUM 0:ade9be832910 103
MACRUM 0:ade9be832910 104 #endif // MBED_BME280_H