I2C_Sensor.h

00001 // by MaEtUgR
00002 
00003 #ifndef I2C_Sensor_H
00004 #define I2C_Sensor_H
00005 
00006 #include "mbed.h"
00007 
00008 class I2C_Sensor
00009 {           
00010     public:
00011         I2C_Sensor(PinName sda, PinName scl, char address);
00012         
00013         float data[3];                  // where the measured data is saved
00014         virtual void read() = 0;        // read all axis from register to array data
00015         //TODO: virtual void calibrate() = 0;   // calibrate the sensor and if desired write calibration values to a file
00016         
00017     protected:
00018         // Calibration
00019         void saveCalibrationValues(float values[], int size, char * filename);
00020         void loadCalibrationValues(float values[], int size, char * filename);
00021     
00022         // I2C functions
00023         char readRegister(char reg);
00024         void writeRegister(char reg, char data);
00025         void readMultiRegister(char reg, char* output, int size);
00026         
00027         // raw data and function to measure it
00028         short raw[3];
00029         virtual void readraw() = 0;
00030         
00031     private:
00032         I2C i2c;            // original mbed I2C-library just to initialise the control registers
00033         char i2c_address;   // address
00034         
00035         LocalFileSystem local; // file access to save calibration values
00036 };
00037 
00038 #endif