Diff: bmp085.h

Revision:

0:e8f53e502a4c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bmp085.h	Thu Mar 19 03:46:13 2015 +0000
@@ -0,0 +1,118 @@
+/**
+@file bmp085.h
+
+@brief Header file containing member functions and variables
+
+*/
+
+#ifndef __BMP085_H__
+#define __BMP085_H__
+
+#include "mbed.h"
+
+#define BMP085_I2C_ADDR_READ  (0xEF)
+#define BMP085_I2C_ADDR_WRITE (0xEE)
+
+#define CTRL_REG_ADDR (0xF4)
+#define DATA_REG_ADDR (0xF6)
+
+#define MEASURE_TEMP_CMD (0x2E)
+#define MEASURE_PRES_CMD (0x34)
+
+// MSB addresses, MSB first
+#define CAL_DATA_AC1    (0xAA)
+#define CAL_DATA_AC2    (0xAC)
+#define CAL_DATA_AC3    (0xAE)
+#define CAL_DATA_AC4    (0xB0)
+#define CAL_DATA_AC5    (0xB2)
+#define CAL_DATA_AC6    (0xB4)
+#define CAL_DATA_B1     (0xB6)
+#define CAL_DATA_B2     (0xB8)
+#define CAL_DATA_MB     (0xBA)
+#define CAL_DATA_MC     (0xBC)
+#define CAL_DATA_MD     (0xBE)
+
+
+/** 
+@brief Simple library for interfacing with Bosch BMP085
+
+@brief Revision 1.0
+
+@author Tim Meese
+@date   January 2015
+ *
+ * Example:
+ * @code
+ 
+ #include "mbed.h"
+ #include "bmp085.h"
+ 
+  
+ * @endcode
+ */
+
+
+class BMP085
+{
+
+private:
+
+    // I2C interface
+    I2C * i2c;
+ 
+    const float p0 = 101325;     // Pressure at sea level (Pa)
+    float altitude;
+   
+    // Calibration parameters
+    short AC1;
+    short AC2;
+    short AC3;
+    unsigned short AC4;
+    unsigned short AC5;
+    unsigned short AC6;
+    short B1;
+    short B2;
+    short MB;
+    short MC;
+    short MD;
+    
+    // uncalibrated temp, pressure
+    long UT;    
+    long UP;
+    
+    // shared values 
+    long X1;
+    long X2;
+    long X3;
+    long B3;
+    unsigned long B4;
+    long B5;
+    long B6;
+    unsigned long B7;
+    long T; // temp in 0.1 degrees C
+    long p; // pressure in Pascals
+
+    void readCalData();
+    void readUncompTemp();
+    void readUncompPressure(int mode);
+
+public:
+    /** Create a BMP085 object connected to the specified pins
+    *
+    * @param clkPin  Pin connected to clk
+    * @param dataPin Pin connected to data
+    * 
+    */
+    BMP085(PinName clkPin, PinName dataPin);
+    
+    /** Initialise SHT11
+    *
+    */
+    void init();
+    float getTemperature();
+    float getPressure(int oss);
+    long getUT();
+    long getUP();
+};
+
+#endif /* __BMP085_H__ */