BNO055 9DOF: Add string based cons for Fusion Hub

Signed-off-by: Adelin Dobre <adelin.dobre@rinftech.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

src/bno055/bno055.hpp

@@ -27,6 +27,8 @@
 
 #include <vector>
 #include "bno055.h"
+#include "mraa/initio.hpp"
+
 
 #include <interfaces/iAcceleration.hpp>
 #include <interfaces/iGyroscope.hpp>
@@ -126,6 +128,13 @@ namespace upm {
         BNO055(int bus=BNO055_DEFAULT_I2C_BUS,
                uint8_t addr=BNO055_DEFAULT_ADDR);
 
+        /**
+         * Instantiates BNO055 9DOF Fusion Hub based on a given string.
+         *
+         * @param initStr string containing specific information for BNO055 initialization.
+         */
+        BNO055(std::string initStr);
+
         /**
          * BNO055 Destructor.
          */
@@ -655,6 +664,7 @@ namespace upm {
 
     protected:
         bno055_context m_bno055;
+        mraa::MraaIo mraaIo;
 
         /**
          * Set the current internal device register page.  This is a low