Diff: BMP280.h

Revision:

2:1578ecfa9377

Child:

3:d15b6579b5ae

diff -r 3a36f28f8d65 -r 1578ecfa9377 BMP280.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BMP280.h	Tue Apr 07 13:10:45 2020 +0000
@@ -0,0 +1,80 @@
+/**
+ *  BME280 Combined humidity and pressure sensor library
+ *
+ *  @author  Toyomasa Watarai
+ *  @version 1.0
+ *  @date    06-April-2015
+ *
+ *  Library for "BME280 temperature, humidity and pressure sensor module" from Switch Science
+ *    https://www.switch-science.com/catalog/2236/
+ *
+ *  For more information about the BME280:
+ *    http://ae-bst.resource.bosch.com/media/products/dokumente/bme280/BST-BME280_DS001-10.pdf
+ */
+ 
+#ifndef MbedBME280Decl
+#define MbedBME280Decl
+
+#include "mbed.h"
+
+//#define _DEBUG
+// default address with SDO High 0x77
+// address with SDO LOW 0x76
+#define SlaveAddressDefault (0x77)
+
+ 
+/** A BME280 environmental sensor
+A library to read environmental temperature and pressure using Bosch BME280. */
+ 
+class BMP280 {
+  public:
+  
+    enum {
+      SlaveAddress = SlaveAddressDefault  //< The default I2C slave address.
+    };
+
+    /* Creates a BME280 instance connected to specified I2C pins and address.
+    @param SDA I2C-bus SDA pin
+    @param SCL I2C-bus SCL pin
+    @param SlaveAddress (option) I2C-bus address (default: 0x77) */
+    BMP280(PinName SDA, PinName SCK, char SlaveAddress = SlaveAddressDefault);
+
+    /* Creates a BME280 instance connected to the I2C pins and address.
+     *
+     * @param i2c_obj I2C object (instance)
+     * @param SlaveAddress (option) I2C-bus address (default: 0x77)
+     */
+    BMP280(I2C &i2c_obj, char SlaveAddress = SlaveAddressDefault);
+
+    ~BMP280();
+
+    /* Initializa BME280 sensor
+    Configure sensor setting and read parameters for calibration */
+    void Initialize(void);
+
+    /* Read the current temperature value (degree Celsius) from BME280 sensor */
+    float Temperature(void);
+
+    /* Read the current pressure value (hectopascal)from BME280 sensor */
+    float Pressure(void);
+
+    /* Read the current humidity value (humidity %) from BME280 sensor */
+    //float HumidityGet(void);
+
+private:
+
+    I2C         *i2c_p;
+    I2C         &i2c;
+    char        address;
+    uint16_t    dig_T1;
+    int16_t     dig_T2, dig_T3;
+    uint16_t    dig_P1;
+    int16_t     dig_P2, dig_P3, dig_P4, dig_P5, dig_P6, dig_P7, dig_P8, dig_P9;
+    uint16_t    dig_H1, dig_H3;
+    int16_t     dig_H2, dig_H4, dig_H5, dig_H6;
+    int32_t     t_fine;
+
+};
+
+#undef SlaveAddressDefault
+#endif //< MbedBME280Decl