Jon Trinder / BME280

Replaced original getTemperature Routine as it was returned strange values

Dependents:   LPC1768-GPS-FUSION-17102018-1

Fork of BME280 by Toyomasa Watarai

BME280.h@5:691e06db489f, 2016-11-29 (annotated)

Committer:
jont
Date:
Tue Nov 29 18:54:29 2016 +0000
Revision:
5:691e06db489f
Parent:
4:ddcaa259e65b 
Replaced original getTemperature Routine as it was returned strange values

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 * @author Toyomasa Watarai
MACRUM 1:763a4018aaec 4 * @version 1.0
MACRUM 1:763a4018aaec 5 * @date 06-April-2015
MACRUM 1:763a4018aaec 6 *
MACRUM 1:763a4018aaec 7 * Library for "BME280 temperature, humidity and pressure sensor module" from Switch Science
MACRUM 1:763a4018aaec 8 * https://www.switch-science.com/catalog/2236/
MACRUM 1:763a4018aaec 9 *
MACRUM 1:763a4018aaec 10 * For more information about the BME280:
takafuminaka 4:ddcaa259e65b 11 * http://ae-bst.resource.bosch.com/media/products/dokumente/bme280/BST-BME280_DS001-10.pdf
jont 5:691e06db489f 12 *
jont 5:691e06db489f 13 *
MACRUM 1:763a4018aaec 14 */
MACRUM 1:763a4018aaec 15
MACRUM 0:ade9be832910 16 #ifndef MBED_BME280_H
MACRUM 0:ade9be832910 17 #define MBED_BME280_H
MACRUM 0:ade9be832910 18
MACRUM 0:ade9be832910 19 #include "mbed.h"
MACRUM 0:ade9be832910 20
MACRUM 0:ade9be832910 21 //#define _DEBUG
jont 5:691e06db489f 22 #define DEFAULT_SLAVE_ADDRESS (0x77 << 1)
MACRUM 0:ade9be832910 23
MACRUM 0:ade9be832910 24 #ifdef _DEBUG
MACRUM 0:ade9be832910 25 extern Serial pc;
MACRUM 0:ade9be832910 26 #define DEBUG_PRINT(...) pc.printf(__VA_ARGS__)
MACRUM 0:ade9be832910 27 #else
MACRUM 0:ade9be832910 28 #define DEBUG_PRINT(...)
MACRUM 0:ade9be832910 29 #endif
MACRUM 0:ade9be832910 30
MACRUM 0:ade9be832910 31
MACRUM 0:ade9be832910 32 /** BME280 class
MACRUM 0:ade9be832910 33 *
MACRUM 0:ade9be832910 34 * BME280: A library to correct environmental data using Boshe BME280 device
MACRUM 0:ade9be832910 35 *
MACRUM 0:ade9be832910 36 * BME280 is an environmental sensor
MACRUM 0:ade9be832910 37 * @endcode
MACRUM 0:ade9be832910 38 */
MACRUM 0:ade9be832910 39
MACRUM 0:ade9be832910 40 class BME280
MACRUM 0:ade9be832910 41 {
MACRUM 0:ade9be832910 42 public:
MACRUM 0:ade9be832910 43
MACRUM 0:ade9be832910 44 /** Create a BME280 instance
MACRUM 0:ade9be832910 45 * which is connected to specified I2C pins with specified address
MACRUM 0:ade9be832910 46 *
MACRUM 0:ade9be832910 47 * @param sda I2C-bus SDA pin
MACRUM 0:ade9be832910 48 * @param scl I2C-bus SCL pin
MACRUM 0:ade9be832910 49 * @param slave_adr (option) I2C-bus address (default: 0x76)
MACRUM 0:ade9be832910 50 */
MACRUM 0:ade9be832910 51 BME280(PinName sda, PinName sck, char slave_adr = DEFAULT_SLAVE_ADDRESS);
MACRUM 0:ade9be832910 52
MACRUM 0:ade9be832910 53 /** Create a BME280 instance
MACRUM 0:ade9be832910 54 * which is connected to specified I2C pins with specified address
MACRUM 0:ade9be832910 55 *
MACRUM 0:ade9be832910 56 * @param i2c_obj I2C object (instance)
MACRUM 0:ade9be832910 57 * @param slave_adr (option) I2C-bus address (default: 0x76)
MACRUM 0:ade9be832910 58 */
MACRUM 0:ade9be832910 59 BME280(I2C &i2c_obj, char slave_adr = DEFAULT_SLAVE_ADDRESS);
MACRUM 0:ade9be832910 60
MACRUM 0:ade9be832910 61 /** Destructor of BME280
MACRUM 0:ade9be832910 62 */
MACRUM 0:ade9be832910 63 virtual ~BME280();
MACRUM 0:ade9be832910 64
MACRUM 0:ade9be832910 65 /** Initializa BME280 sensor
MACRUM 0:ade9be832910 66 *
MACRUM 0:ade9be832910 67 * Configure sensor setting and read parameters for calibration
MACRUM 0:ade9be832910 68 *
MACRUM 0:ade9be832910 69 */
MACRUM 0:ade9be832910 70 void initialize(void);
MACRUM 0:ade9be832910 71
MACRUM 0:ade9be832910 72 /** Read the current temperature value (degree Celsius) from BME280 sensor
MACRUM 0:ade9be832910 73 *
MACRUM 0:ade9be832910 74 */
MACRUM 0:ade9be832910 75 float getTemperature(void);
jont 5:691e06db489f 76
MACRUM 0:ade9be832910 77 /** Read the current pressure value (hectopascal)from BME280 sensor
MACRUM 0:ade9be832910 78 *
MACRUM 0:ade9be832910 79 */
MACRUM 0:ade9be832910 80 float getPressure(void);
MACRUM 0:ade9be832910 81
MACRUM 0:ade9be832910 82 /** Read the current humidity value (humidity %) from BME280 sensor
MACRUM 0:ade9be832910 83 *
MACRUM 0:ade9be832910 84 */
MACRUM 0:ade9be832910 85 float getHumidity(void);
MACRUM 0:ade9be832910 86
MACRUM 0:ade9be832910 87 private:
MACRUM 0:ade9be832910 88
MACRUM 0:ade9be832910 89 I2C *i2c_p;
MACRUM 0:ade9be832910 90 I2C &i2c;
MACRUM 0:ade9be832910 91 char address;
MACRUM 0:ade9be832910 92 uint16_t dig_T1;
MACRUM 0:ade9be832910 93 int16_t dig_T2, dig_T3;
MACRUM 0:ade9be832910 94 uint16_t dig_P1;
MACRUM 0:ade9be832910 95 int16_t dig_P2, dig_P3, dig_P4, dig_P5, dig_P6, dig_P7, dig_P8, dig_P9;
MACRUM 0:ade9be832910 96 uint16_t dig_H1, dig_H3;
MACRUM 0:ade9be832910 97 int16_t dig_H2, dig_H4, dig_H5, dig_H6;
MACRUM 0:ade9be832910 98 int32_t t_fine;
MACRUM 0:ade9be832910 99
MACRUM 0:ade9be832910 100 };
MACRUM 0:ade9be832910 101
MACRUM 0:ade9be832910 102 #endif // MBED_BME280_H