Martin Slade / GroupUproject

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BMP280/BMP280.h@1:84581acd1333, 2018-01-09 (annotated)

Committer:
mslade
Date:
Tue Jan 09 14:53:07 2018 +0000
Revision:
1:84581acd1333
Final Version - Group U

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mslade 1:84581acd1333 1 /**
mslade 1:84581acd1333 2 * BME280 Combined humidity and pressure sensor library
mslade 1:84581acd1333 3 *
mslade 1:84581acd1333 4 * @author Toyomasa Watarai
mslade 1:84581acd1333 5 * @version 1.0
mslade 1:84581acd1333 6 * @date 06-April-2015
mslade 1:84581acd1333 7 *
mslade 1:84581acd1333 8 * Library for "BME280 temperature, humidity and pressure sensor module" from Switch Science
mslade 1:84581acd1333 9 * https://www.switch-science.com/catalog/2236/
mslade 1:84581acd1333 10 *
mslade 1:84581acd1333 11 * For more information about the BME280:
mslade 1:84581acd1333 12 * http://ae-bst.resource.bosch.com/media/products/dokumente/bme280/BST-BME280_DS001-10.pdf
mslade 1:84581acd1333 13 */
mslade 1:84581acd1333 14
mslade 1:84581acd1333 15 #ifndef MBED_BMP280_H
mslade 1:84581acd1333 16 #define MBED_BMP280_H
mslade 1:84581acd1333 17
mslade 1:84581acd1333 18 #include "mbed.h"
mslade 1:84581acd1333 19
mslade 1:84581acd1333 20 //#define _DEBUG
mslade 1:84581acd1333 21 // default address with SDO High 0x77
mslade 1:84581acd1333 22 // address with SDO LOW 0x76
mslade 1:84581acd1333 23 #define DEFAULT_SLAVE_ADDRESS (0x77)
mslade 1:84581acd1333 24
mslade 1:84581acd1333 25 #ifdef _DEBUG
mslade 1:84581acd1333 26 extern Serial pc;
mslade 1:84581acd1333 27 #define DEBUG_PRINT(...) pc.printf(__VA_ARGS__)
mslade 1:84581acd1333 28 #else
mslade 1:84581acd1333 29 #define DEBUG_PRINT(...)
mslade 1:84581acd1333 30 #endif
mslade 1:84581acd1333 31
mslade 1:84581acd1333 32
mslade 1:84581acd1333 33 /** BME280 class
mslade 1:84581acd1333 34 *
mslade 1:84581acd1333 35 * BME280: A library to read environmental data using Bosch BME280 device
mslade 1:84581acd1333 36 * Readds temperature and pressure
mslade 1:84581acd1333 37 *
mslade 1:84581acd1333 38 * BME280 is an environmental sensor
mslade 1:84581acd1333 39 * @endcode
mslade 1:84581acd1333 40 */
mslade 1:84581acd1333 41
mslade 1:84581acd1333 42 class BMP280
mslade 1:84581acd1333 43 {
mslade 1:84581acd1333 44 public:
mslade 1:84581acd1333 45
mslade 1:84581acd1333 46 /** Create a BME280 instance
mslade 1:84581acd1333 47 * which is connected to specified I2C pins with specified address
mslade 1:84581acd1333 48 *
mslade 1:84581acd1333 49 * @param sda I2C-bus SDA pin
mslade 1:84581acd1333 50 * @param scl I2C-bus SCL pin
mslade 1:84581acd1333 51 * @param slave_adr (option) I2C-bus address (default: 0x77)
mslade 1:84581acd1333 52 */
mslade 1:84581acd1333 53 BMP280(PinName sda, PinName sck, char slave_adr = DEFAULT_SLAVE_ADDRESS);
mslade 1:84581acd1333 54
mslade 1:84581acd1333 55 /** Create a BME280 instance
mslade 1:84581acd1333 56 * which is connected to specified I2C pins with specified address
mslade 1:84581acd1333 57 *
mslade 1:84581acd1333 58 * @param i2c_obj I2C object (instance)
mslade 1:84581acd1333 59 * @param slave_adr (option) I2C-bus address (default: 0x77)
mslade 1:84581acd1333 60 */
mslade 1:84581acd1333 61 BMP280(I2C &i2c_obj, char slave_adr = DEFAULT_SLAVE_ADDRESS);
mslade 1:84581acd1333 62
mslade 1:84581acd1333 63 /** Destructor of BME280
mslade 1:84581acd1333 64 */
mslade 1:84581acd1333 65 virtual ~BMP280();
mslade 1:84581acd1333 66
mslade 1:84581acd1333 67 /** Initializa BME280 sensor
mslade 1:84581acd1333 68 *
mslade 1:84581acd1333 69 * Configure sensor setting and read parameters for calibration
mslade 1:84581acd1333 70 *
mslade 1:84581acd1333 71 */
mslade 1:84581acd1333 72 void initialize(void);
mslade 1:84581acd1333 73
mslade 1:84581acd1333 74 /** Read the current temperature value (degree Celsius) from BME280 sensor
mslade 1:84581acd1333 75 *
mslade 1:84581acd1333 76 */
mslade 1:84581acd1333 77 float getTemperature(void);
mslade 1:84581acd1333 78
mslade 1:84581acd1333 79 /** Read the current pressure value (hectopascal)from BME280 sensor
mslade 1:84581acd1333 80 *
mslade 1:84581acd1333 81 */
mslade 1:84581acd1333 82 float getPressure(void);
mslade 1:84581acd1333 83
mslade 1:84581acd1333 84 /** Read the current humidity value (humidity %) from BME280 sensor
mslade 1:84581acd1333 85 *
mslade 1:84581acd1333 86 */
mslade 1:84581acd1333 87 // float getHumidity(void);
mslade 1:84581acd1333 88
mslade 1:84581acd1333 89 private:
mslade 1:84581acd1333 90
mslade 1:84581acd1333 91 I2C *i2c_p;
mslade 1:84581acd1333 92 I2C &i2c;
mslade 1:84581acd1333 93 char address;
mslade 1:84581acd1333 94 uint16_t dig_T1;
mslade 1:84581acd1333 95 int16_t dig_T2, dig_T3;
mslade 1:84581acd1333 96 uint16_t dig_P1;
mslade 1:84581acd1333 97 int16_t dig_P2, dig_P3, dig_P4, dig_P5, dig_P6, dig_P7, dig_P8, dig_P9;
mslade 1:84581acd1333 98 uint16_t dig_H1, dig_H3;
mslade 1:84581acd1333 99 int16_t dig_H2, dig_H4, dig_H5, dig_H6;
mslade 1:84581acd1333 100 int32_t t_fine;
mslade 1:84581acd1333 101
mslade 1:84581acd1333 102 };
mslade 1:84581acd1333 103
mslade 1:84581acd1333 104 #endif // MBED_BME280_H