ADXL335: Add string based constructor for Accelerometer

Signed-off-by: Adelin Dobre <adelin.dobre@rinftech.com>

src/ad8232/ad8232.cxx

@@ -23,9 +23,10 @@
  */
 
 #include <iostream>
+#include <typeinfo>
+
 #include "upm_string_parser.hpp"
 #include "ad8232.hpp"
-#include <typeinfo>
 
 using namespace upm;
 using namespace std;
@@ -63,7 +64,7 @@ AD8232::AD8232(std::string initStr)
                             ": mraa_gpio_init() failed, invalid pin?");
   }
 
-  if(!mraaIo->gpios.empty())
+  if(!mraaIo->aios.empty())
   {
     m_aioOUT = &mraaIo->aios[0];
   }

src/adxl335/adxl335.cxx

@@ -29,6 +29,7 @@
 #include <string>
 #include <stdexcept>
 
+#include "upm_string_parser.hpp"
 #include "adxl335.hpp"
 
 using namespace std;
@@ -63,6 +64,53 @@ ADXL335::ADXL335(int pinX, int pinY, int pinZ, float aref)
     }
 }
 
+ADXL335::ADXL335(std::string initStr) : mraaIo(initStr)
+{
+  m_aref = ADXL335_DEFAULT_AREF;
+  m_zeroX = 0.0;
+  m_zeroY = 0.0;
+  m_zeroZ = 0.0;
+
+  mraa_io_descriptor* descs = mraaIo.getMraaDescriptors();
+
+  if(!descs->aios)
+  {
+    throw std::invalid_argument(std::string(__FUNCTION__) +
+                                ": mraa_aio_init(X) failed, invalid pin?");
+  }
+  else
+  {
+    printf("ADXL335 else inside constructor\n");
+    if( !(m_aioX = descs->aios[0]) )
+    {
+      throw std::invalid_argument(std::string(__FUNCTION__) +
+                                ": mraa_aio_init(X) failed, invalid pin?");
+    }
+    if( !(m_aioY = descs->aios[1]) )
+    {
+      throw std::invalid_argument(std::string(__FUNCTION__) +
+                                ": mraa_aio_init(X) failed, invalid pin?");
+    }
+    if( !(m_aioZ = descs->aios[2]) )
+    {
+      throw std::invalid_argument(std::string(__FUNCTION__) +
+                                ": mraa_aio_init(X) failed, invalid pin?");
+    }
+  }
+
+  std::vector<std::string> upmTokens;
+
+  if (!mraaIo.getLeftoverStr().empty()) {
+    upmTokens = UpmStringParser::parse(mraaIo.getLeftoverStr());
+  }
+
+  for (std::string tok : upmTokens) {
+    if(tok.substr(0,5) == "aref:") {
+      m_aref = std::stof(tok.substr(5));
+    }
+  }
+}
+
 ADXL335::~ADXL335()
 {
   mraa_aio_close(m_aioX);

src/adxl335/adxl335.hpp

@@ -29,6 +29,7 @@
 #include <string>
 #include <vector>
 #include <mraa/aio.h>
+#include <mraa/initio.hpp>
 
 #define ADXL335_DEFAULT_AREF 5.0
 #define ADXL335_SENSITIVITY 0.25 // 0.25v/g
@@ -72,6 +73,13 @@ namespace upm {
      */
     ADXL335(int pinX, int pinY, int pinZ, float aref=ADXL335_DEFAULT_AREF);
 
+    /**
+     * Instantiates ADXL335 Accelerometer based on a given string.
+     *
+     * @param initStr string containing specific information for ADXL335 initialization.
+     */
+    ADXL335(std::string initStr);
+
     /**
      * ADXL335 destructor
      */
@@ -137,6 +145,7 @@ namespace upm {
     void calibrate();
 
   private:
+    mraa::MraaIo mraaIo;
     mraa_aio_context m_aioX;
     mraa_aio_context m_aioY;
     mraa_aio_context m_aioZ;