HMC5883L.h

00001 #ifndef HMC5883L_H
00002 #define HMC5883L_H
00003  
00004 #include "mbed.h"
00005  
00006 #define HMC5883L_IDENT_A        0x0A // In this case the identification register A is used to identify the devide. ASCII value H
00007 #define HMC5883L_I2C            0x1E // 7-bit address. 0x3C write, 0x3D read.
00008 #define HMC5883L_I2C_WRITE      0x3C // Same as (& 0xFE), ensure that the MSB bit is being set to zero (RW=0 -> Writing)
00009 #define HMC5883L_I2C_READ       0x3D // Same as (| 0x01), ensure that the MSB bit is being set to one  (RW=1 -> Reading)
00010  
00011 #define HMC5883L_CONFIG_A       0x00
00012 #define HMC5883L_CONFIG_B       0x01
00013 #define HMC5883L_MODE           0x02
00014 #define HMC5883L_STATUS         0x09
00015  
00016 #define HMC5883L_X_MSB          0x03
00017 #define HMC5883L_X_LSB          0x04
00018 #define HMC5883L_Z_MSB          0x05
00019 #define HMC5883L_Z_LSB          0x06
00020 #define HMC5883L_Y_MSB          0x07
00021 #define HMC5883L_Y_LSB          0x08
00022  
00023  
00024 class HMC5883L 
00025 {
00026  
00027 public:
00028  
00029     HMC5883L(PinName sda, PinName scl);
00030     float getMx();
00031     float getMy();
00032     float getMz();
00033 private:
00034     void Write(char reg_address, char data);
00035     char Read(char data);
00036     void MultiByteRead(char address, char* output, int size); 
00037     I2C i2c;
00038     
00039 };
00040  
00041 #endif /* HMC5883L_H */
00042